/* roulang page: index */
:root {
    --bg-primary: #0A0E12;
    --bg-secondary: #111820;
    --bg-tertiary: #17202A;
    --accent-green: #29F2B1;
    --accent-orange: #FF7A1A;
    --accent-purple: #8A7CFF;
    --text-primary: #F0F5F3;
    --text-secondary: #A7B2B8;
    --text-muted: #6B7A80;
    --border: rgba(255, 255, 255, 0.08);
    --danger: #FF4D6D;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --space-section: 80px;
    --container: 1200px;
    --nav-height: 64px;
    --shadow-green: 0 0 0 1px rgba(41, 242, 177, 0.3), 0 0 24px rgba(41, 242, 177, 0.15);
    --shadow-orange: 0 0 0 1px rgba(255, 122, 26, 0.35), 0 0 22px rgba(255, 122, 26, 0.2);
    --transition: 220ms ease-out;
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    font-size: 15px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  img {
    max-width: 100%;
    display: block;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  button,
  input {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
  }

  button {
    cursor: pointer;
  }

  ul,
  ol {
    list-style: none;
  }

  :focus-visible {
    outline: 2px solid var(--accent-green);
    outline-offset: 2px;
    border-radius: 4px;
  }

  ::selection {
    background: rgba(41, 242, 177, 0.2);
    color: #fff;
  }

  .container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
  }

  .no-scroll {
    overflow: hidden;
  }

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(10, 14, 18, 0.88);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .site-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    white-space: nowrap;
  }

  .site-logo__icon {
    width: 8px;
    height: 24px;
    border-radius: 4px;
    background: var(--accent-green);
    box-shadow: var(--shadow-green);
    flex: 0 0 auto;
  }

  .site-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 0 10px;
  }

  .site-nav__list {
    display: flex;
    align-items: center;
    gap: 28px;
  }

  .site-nav__link {
    position: relative;
    display: inline-block;
    padding: 20px 2px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition);
    white-space: nowrap;
  }

  .site-nav__link::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -1px;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--accent-green);
    box-shadow: 0 0 12px rgba(41, 242, 177, 0.8);
    transform: translateX(-50%);
    transition: width var(--transition);
  }

  .site-nav__link:hover {
    color: var(--text-primary);
  }

  .site-nav__link:hover::after {
    width: calc(100% - 4px);
  }

  .site-nav__link.is-active {
    color: var(--text-primary);
  }

  .site-nav__link.is-active::after {
    width: calc(100% - 4px);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 22px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition);
    white-space: nowrap;
  }

  .btn--primary {
    background: linear-gradient(135deg, #FF7A1A 0%, #FF9A3E 100%);
    color: #141210;
    box-shadow: 0 6px 18px rgba(255, 122, 26, 0.18);
  }

  .btn--primary:hover {
    box-shadow: var(--shadow-orange);
    transform: translateY(-1px);
  }

  .btn--ghost {
    background: transparent;
    color: var(--accent-green);
    border-color: rgba(41, 242, 177, 0.45);
  }

  .btn--ghost:hover {
    border-color: var(--accent-green);
    box-shadow: var(--shadow-green);
    transform: translateY(-1px);
  }

  .btn--sm {
    height: 34px;
    padding: 0 16px;
    font-size: 13px;
    border-radius: var(--radius-xs);
  }

  .header-cta {
    flex: 0 0 auto;
  }

  .nav-burger {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
  }

  .nav-burger__line {
    width: 16px;
    height: 2px;
    background: var(--accent-green);
    border-radius: 2px;
    transition: transform 0.2s;
  }

  .nav-burger.is-open .nav-burger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-burger.is-open .nav-burger__line:nth-child(2) {
    opacity: 0;
  }
  .nav-burger.is-open .nav-burger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .mobile-nav {
    display: none;
    position: fixed;
    inset: var(--nav-height) 0 0 0;
    background: rgba(10, 14, 18, 0.97);
    padding: 32px 24px;
    z-index: 999;
    overflow-y: auto;
  }

  .mobile-nav.is-open {
    display: block;
  }

  .mobile-nav__list {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .mobile-nav__link {
    display: block;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
  }

  .mobile-nav__link.is-active,
  .mobile-nav__link:active {
    color: var(--text-primary);
    border-color: rgba(41, 242, 177, 0.35);
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: calc(100vh - var(--nav-height));
    display: flex;
    align-items: center;
    background: linear-gradient(180deg, rgba(10, 14, 18, 0.74) 0%, rgba(10, 14, 18, 0.92) 68%, var(--bg-primary) 100%), 
                repeating-linear-gradient(135deg, rgba(255,255,255,0.025) 0, rgba(255,255,255,0.025) 1px, transparent 1px, transparent 7px),
                url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    overflow: hidden;
    padding: 68px 0 88px;
  }

  .hero::before {
    content: '';
    position: absolute;
    width: 380px;
    height: 380px;
    left: -80px;
    bottom: -80px;
    border-radius: 50%;
    background: rgba(41, 242, 177, 0.05);
    filter: blur(80px);
    pointer-events: none;
  }

  .hero__grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 64px;
    align-items: center;
  }

  .hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--accent-green);
    margin-bottom: 18px;
  }

  .hero__eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 12px currentColor;
  }

  .hero__title {
    font-size: 44px;
    line-height: 1.22;
    font-weight: 800;
    letter-spacing: -0.01em;
    max-width: 680px;
    margin-bottom: 20px;
  }

  .hero__title span {
    color: var(--accent-green);
  }

  .hero__desc {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 560px;
    margin-bottom: 28px;
  }

  .hero__status-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-bottom: 30px;
  }

  .status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 999px;
  }

  .status-pill__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 10px rgba(41,242,177,0.7);
  }

  .hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero-card {
    position: relative;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: var(--radius-lg);
    padding: 28px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .hero-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(41,242,177,0.12), transparent 32%, rgba(255,122,26,0.14));
    pointer-events: none;
  }

  .hero-card__head {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
  }

  .hero-card__head .icon-pulse {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 0 0 rgba(41,242,177,0.6);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(41,242,177,0.45); }
    70% { box-shadow: 0 0 0 10px rgba(41,242,177,0); }
    100% { box-shadow: 0 0 0 0 rgba(41,242,177,0); }
  }

  .hero-card__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 11px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
  }

  .hero-card__row:last-child {
    border-bottom: 0;
  }

  .hero-card__label {
    color: var(--text-muted);
  }

  .hero-card__value {
    color: var(--text-primary);
    font-weight: 500;
    letter-spacing: 0.01em;
  }

  .hero-card__value.is-green {
    color: var(--accent-green);
  }

  .hero-card__value.is-orange {
    color: var(--accent-orange);
  }

  .hero-card__time {
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 14px;
  }

  /* ===== Section base ===== */
  .section {
    padding: var(--space-section) 0;
  }

  .section--tight {
    padding-bottom: 48px;
  }

  .section__title {
    font-size: 30px;
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin-bottom: 12px;
  }

  .section__lead {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 560px;
    line-height: 1.8;
  }

  .section__head {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 40px;
  }

  .section__more {
    margin-top: 4px;
  }

  .section__divider {
    height: 1px;
    background: linear-gradient(90deg, rgba(41,242,177,0.35), transparent 80%);
    border: 0;
    margin-bottom: 40px;
  }

  /* ===== Countdown ===== */
  .countdown-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .countdown-grid {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 32px;
    align-items: center;
  }

  .countdown-wrap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    align-items: center;
  }

  .countdown-item {
    text-align: center;
    padding: 18px 4px;
    position: relative;
  }

  .countdown-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 20px;
    bottom: 20px;
    width: 1px;
    background: var(--border);
  }

  .countdown__num {
    font-size: 46px;
    line-height: 1;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    background: linear-gradient(180deg, var(--text-primary) 20%, var(--accent-green));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    padding-bottom: 8px;
    position: relative;
  }

  .countdown__num::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: var(--accent-green);
    border-radius: 2px;
    transform: translateX(-50%);
    box-shadow: 0 0 14px rgba(41,242,177,0.5);
  }

  .countdown__label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 10px;
  }

  .countdown__hint {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-top: 14px;
  }

  .subscribe-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 28px;
  }

  .subscribe-card__title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .subscribe-card__text {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 18px;
  }

  .subscribe-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .subscribe-form__group {
    display: flex;
    gap: 8px;
  }

  .input {
    flex: 1;
    height: 42px;
    min-width: 0;
    background: var(--bg-primary);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-sm);
    padding: 0 14px;
    font-size: 14px;
    color: var(--text-primary);
    transition: border-color var(--transition), box-shadow var(--transition);
  }

  .input::placeholder {
    color: var(--text-muted);
  }

  .input:focus {
    border-color: var(--accent-green);
    box-shadow: var(--shadow-green);
  }

  .subscribe-form__success {
    display: none;
    font-size: 13px;
    color: var(--accent-green);
    gap: 6px;
    align-items: center;
  }

  .subscribe-form__success.is-visible {
    display: flex;
  }

  /* ===== Feature cards ===== */
  .features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .feature-card {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 26px 24px 22px;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    display: block;
  }

  .feature-card:hover {
    border-color: rgba(41,242,177,0.3);
    box-shadow: var(--shadow-green);
    transform: translateY(-3px);
  }

  .feature-card__num {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px rgba(138, 124, 255, 0.5);
    margin-bottom: 20px;
    display: block;
  }

  .feature-card__icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(41,242,177,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    border: 1px solid rgba(41,242,177,0.18);
    color: var(--accent-green);
  }

  .feature-card__icon--purple {
    background: rgba(138,124,255,0.08);
    border-color: rgba(138,124,255,0.18);
    color: var(--accent-purple);
  }

  .feature-card__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
  }

  .feature-card__text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
  }

  .feature-card__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--accent-green);
    font-weight: 500;
  }

  .feature-card__link svg {
    transition: transform var(--transition);
  }

  .feature-card:hover .feature-card__link svg {
    transform: translateX(3px);
  }

  /* ===== Latest info ===== */
  .latest-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  }

  .latest-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: stretch;
  }

  .latest-feature {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition), box-shadow var(--transition);
  }

  .latest-feature:hover {
    border-color: rgba(41,242,177,0.35);
    box-shadow: var(--shadow-green);
  }

  .latest-feature__thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
  }

  .latest-feature__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 500ms ease;
  }

  .latest-feature:hover .latest-feature__thumb img {
    transform: scale(1.02);
  }

  .latest-feature__thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(10,14,18,0.7));
  }

  .latest-feature__body {
    padding: 26px 26px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    background: rgba(41,242,177,0.1);
    border: 1px solid rgba(41,242,177,0.18);
    color: var(--accent-green);
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    font-weight: 600;
    margin-bottom: 14px;
  }

  .latest-feature__body h3 {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.45;
    margin-bottom: 10px;
    color: var(--text-primary);
  }

  .latest-feature__body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 18px;
  }

  .latest-feature__footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
  }

  .latest-feature__footer .arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-green);
  }

  .latest-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .latest-list__item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color var(--transition), box-shadow var(--transition);
  }

  .latest-list__item:hover {
    border-color: rgba(255,122,26,0.25);
    box-shadow: 0 0 0 1px rgba(255,122,26,0.15), 0 8px 28px rgba(255,122,26,0.08);
  }

  .latest-list__top {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .latest-list__item h4 {
    font-size: 15px;
    font-weight: 650;
    line-height: 1.5;
    color: var(--text-primary);
  }

  .latest-list__item time {
    font-size: 12px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
  }

  /* ===== Steps ===== */
  .steps-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
  }

  .steps-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 18px 50px rgba(0,0,0,0.25);
  }

  .steps-img img {
    width: 100%;
    height: auto;
  }

  .steps-list {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .steps-item {
    display: flex;
    gap: 18px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    position: relative;
  }

  .steps-item:first-child {
    padding-top: 0;
  }

  .steps-item:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .steps-item__num {
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    border-radius: 50%;
    border: 1px solid rgba(41,242,177,0.35);
    color: var(--accent-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    background: rgba(41,242,177,0.05);
    margin-top: 2px;
  }

  .steps-item__body h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
  }

  .steps-item__body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  /* ===== FAQ ===== */
  .faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    max-width: 880px;
  }

  .faq-item {
    border-bottom: 1px solid var(--border);
  }

  .faq-item:last-child {
    border-bottom: 0;
  }

  .faq-item__question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 24px 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    width: 100%;
    text-align: left;
    border-radius: 0;
    cursor: pointer;
    position: relative;
    transition: color var(--transition);
  }

  .faq-item__question::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    border-radius: 4px;
    background: var(--accent-green);
    box-shadow: 0 0 12px rgba(41,242,177,0.7);
    transition: height var(--transition);
  }

  .faq-item.is-open .faq-item__question {
    color: var(--accent-green);
  }

  .faq-item.is-open .faq-item__question::before {
    height: 22px;
  }

  .faq-item__icon {
    position: relative;
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
  }

  .faq-item__icon::before,
  .faq-item__icon::after {
    content: '';
    position: absolute;
    background: var(--text-muted);
    border-radius: 2px;
    transition: background var(--transition), transform var(--transition);
  }

  .faq-item__icon::before {
    top: 50%;
    left: 0;
    width: 18px;
    height: 2px;
    transform: translateY(-50%);
  }

  .faq-item__icon::after {
    top: 0;
    left: 50%;
    width: 2px;
    height: 18px;
    transform: translateX(-50%);
  }

  .faq-item.is-open .faq-item__icon::before {
    background: var(--accent-green);
  }
  .faq-item.is-open .faq-item__icon::after {
    transform: translateX(-50%) rotate(90deg);
    opacity: 0;
  }

  .faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 240ms ease-out;
    padding: 0 24px 0 8px;
  }

  .faq-item.is-open .faq-item__answer {
    max-height: 600px;
    padding-bottom: 24px;
  }

  .faq-item__answer p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: 16px;
    border-left: 1px solid rgba(255,255,255,0.1);
  }

  /* ===== CTA ===== */
  .cta-section {
    background: linear-gradient(135deg, rgba(255,122,26,0.06) 0%, transparent 40%, rgba(41,242,177,0.05) 100%);
    border-top: 1px solid rgba(255,122,26,0.12);
  }

  .cta-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    overflow: hidden;
  }

  .cta-box::before {
    content: '';
    position: absolute;
    width: 240px;
    height: 240px;
    right: -40px;
    top: -100px;
    background: rgba(255,122,26,0.08);
    border-radius: 50%;
    filter: blur(40px);
  }

  .cta-box__title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 8px;
  }

  .cta-box__text {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
  }

  .cta-box__action {
    flex: 0 0 auto;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #080C10;
    border-top: 1px solid rgba(41,242,177,0.14);
    padding: 56px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
  }

  .footer-brand__logo {
    font-size: 18px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
  }

  .footer-brand__logo .dot {
    width: 7px;
    height: 22px;
    border-radius: 4px;
    background: var(--accent-green);
    box-shadow: var(--shadow-green);
  }

  .footer-brand__desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 260px;
  }

  .footer-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .footer-links a,
  .footer-links span {
    font-size: 13px;
    color: var(--text-secondary);
  }

  .footer-links a:hover {
    color: var(--accent-green);
  }

  .footer-note {
    padding: 14px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-muted);
  }

  .footer-note .mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    color: var(--text-secondary);
  }

  /* ===== Animations ===== */
  .fade-up {
    opacity: 0;
    transform: translateY(14px);
    animation: fadeUp 500ms ease-out forwards;
  }

  @keyframes fadeUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .hero .fade-up:nth-child(1) { animation-delay: 0ms; }
  .hero .fade-up:nth-child(2) { animation-delay: 80ms; }
  .hero .fade-up:nth-child(3) { animation-delay: 160ms; }
  .hero .fade-up:nth-child(4) { animation-delay: 240ms; }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }

  /* ===== Responsive ===== */
  @media (max-width: 1100px) {
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
    }

    .countdown-grid {
      grid-template-columns: 1fr;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 960px) {
    .site-nav__list {
      display: none;
    }

    .nav-burger {
      display: flex;
    }

    .header-cta .btn {
      height: 36px;
      padding: 0 16px;
      font-size: 13px;
    }

    .hero__grid {
      grid-template-columns: 1fr;
      gap: 48px;
      padding-top: 20px;
    }

    .hero__title {
      font-size: 34px;
    }

    .latest-layout {
      grid-template-columns: 1fr;
    }

    .steps-layout {
      grid-template-columns: 1fr;
      gap: 36px;
    }

    .cta-box {
      flex-direction: column;
      align-items: flex-start;
      padding: 32px;
    }
  }

  @media (max-width: 768px) {
    :root {
      --space-section: 48px;
    }

    body {
      font-size: 14px;
    }

    .container {
      padding: 0 16px;
    }

    .section__title {
      font-size: 26px;
    }

    .countdown-wrap {
      grid-template-columns: repeat(4, 1fr);
      gap: 4px;
    }

    .countdown__num {
      font-size: 30px;
    }

    .countdown-item:not(:last-child)::after {
      right: -12px;
    }

    .feature-card {
      padding: 20px;
    }

    .features-grid {
      gap: 14px;
    }

    .cta-box {
      padding: 26px 20px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }

    .site-logo {
      font-size: 16px;
    }
  }

  @media (max-width: 540px) {
    .hero {
      padding: 44px 0 60px;
    }

    .hero__title {
      font-size: 28px;
      line-height: 1.3;
    }

    .hero__actions {
      flex-direction: column;
      align-items: stretch;
    }

    .hero__actions .btn {
      width: 100%;
    }

    .hero-card {
      padding: 20px;
    }

    .hero-card__row {
      flex-direction: column;
      align-items: flex-start;
      gap: 4px;
    }

    .features-grid {
      grid-template-columns: 1fr;
    }

    .countdown-grid {
      gap: 24px;
    }

    .countdown-wrap {
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }

    .countdown__num {
      font-size: 24px;
    }

    .countdown__label {
      font-size: 11px;
    }

    .countdown-item:not(:last-child)::after {
      right: -4px;
      top: 10px;
      bottom: 10px;
    }

    .subscribe-form__group {
      flex-direction: column;
    }

    .subscribe-form__group .btn {
      width: 100%;
    }

    .latest-feature__body {
      padding: 20px 18px;
    }

    .latest-feature__body h3 {
      font-size: 17px;
    }

    .steps-item {
      gap: 14px;
    }

    .site-footer {
      padding-top: 40px;
    }

    .footer-note {
      flex-direction: column;
      align-items: flex-start;
      font-size: 12px;
    }

    .header-cta {
      display: none;
    }
  }

/* roulang page: article */
:root {
  --bg: #0A0E12;
  --surface: #111820;
  --surface-2: #17202A;
  --green: #29F2B1;
  --orange: #FF7A1A;
  --purple: #8A7CFF;
  --text: #F0F5F3;
  --text-2: #A7B2B8;
  --text-3: #6B7A80;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --r-lg: 20px;
  --r-md: 14px;
  --r-sm: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
}
.container {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.22s ease-out, color 0.22s ease-out, border-color 0.22s ease-out, box-shadow 0.22s ease-out, transform 0.22s ease-out;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}
.btn--primary {
  background: linear-gradient(135deg, #FF8A3C 0%, #FF7A1A 70%);
  color: #14100a;
  border-color: rgba(255, 122, 26, 0.35);
  box-shadow: 0 0 0 1px rgba(255, 122, 26, 0.12), 0 0 18px rgba(255, 102, 0, 0.14);
}
.btn--primary:hover {
  box-shadow: 0 0 0 1px rgba(255, 138, 60, 0.55), 0 0 24px rgba(255, 108, 23, 0.28);
  transform: translateY(-1px);
}
.btn--primary:active {
  transform: translateY(0);
}
.btn--outline {
  background: transparent;
  color: var(--green);
  border-color: rgba(41, 242, 177, 0.45);
}
.btn--outline:hover {
  border-color: var(--green);
  box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.2), 0 0 20px rgba(41, 242, 177, 0.12);
  background: rgba(41, 242, 177, 0.04);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn--ghost:hover {
  border-color: var(--line-strong);
  color: #fff;
}
.btn--sm {
  height: 38px;
  padding: 0 17px;
  font-size: 14px;
}
.btn--lg {
  height: 52px;
  padding: 0 28px;
  font-size: 16px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(10, 14, 18, 0.84);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.header-shell {
  height: 72px;
  display: flex;
  align-items: center;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: 30px;
  flex-shrink: 0;
}
.logo-mark {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px rgba(41, 242, 177, 0.7);
}
.logo-word {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 1;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav__link {
  position: relative;
  display: block;
  padding: 26px 8px 22px;
  margin: 0 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.01em;
  transition: color 0.22s ease-out;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--green);
  box-shadow: 0 0 8px rgba(41, 242, 177, 0.55);
  transform: translateX(-50%);
  transition: width 0.22s ease-out;
}
.site-nav__link:hover {
  color: #fff;
}
.site-nav__link:hover::after {
  width: calc(100% - 12px);
}
.site-nav__link.is-active {
  color: #fff;
}
.site-nav__link.is-active::after {
  width: calc(100% - 12px);
}
.header-cta {
  margin-left: 30px;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.22s ease-out, opacity 0.22s ease-out;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ===== Article Banner ===== */
.article-banner {
  position: relative;
  padding: 88px 0 76px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 78% 20%, rgba(138, 124, 255, 0.16), transparent 36%),
    radial-gradient(circle at 18% 76%, rgba(41, 242, 177, 0.09), transparent 30%),
    linear-gradient(180deg, rgba(10, 14, 18, 0.68) 0%, rgba(10, 14, 18, 0.92) 100%),
    url("/assets/images/backpic/back-3.png") center / cover no-repeat;
}
.article-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.article-banner .container {
  position: relative;
  z-index: 1;
}
.article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 34px;
  font-size: 14px;
  color: var(--text-3);
}
.article-breadcrumb a {
  color: var(--text-2);
  transition: color 0.2s;
}
.article-breadcrumb a:hover {
  color: var(--green);
}
.breadcrumb-sep {
  opacity: 0.5;
  font-size: 12px;
}
.article-banner__main {
  max-width: 860px;
}
.article-banner__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(41, 242, 177, 0.26);
  background: rgba(41, 242, 177, 0.05);
  color: var(--green);
  font-size: 13px;
}
.article-banner__eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(41, 242, 177, 0.85);
}
.article-hero-title {
  margin: 0 0 32px;
  font-size: clamp(30px, 4.2vw, 44px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: #fff;
}
.article-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1;
}
.meta-chip svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}
.meta-chip--cat {
  color: var(--purple);
  border-color: rgba(138, 124, 255, 0.18);
  background: rgba(138, 124, 255, 0.05);
}
.meta-chip--dot {
  position: relative;
  padding-left: 25px;
}
.meta-chip--dot::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -3.5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(41, 242, 177, 0.7);
}

/* ===== Article content ===== */
.article-content-section {
  padding: 70px 0 36px;
}
.article-rte {
  max-width: 760px;
  margin: 0 auto;
  color: #DDE5E1;
  font-size: 16px;
  line-height: 1.9;
}
.article-rte p {
  margin: 0 0 22px;
}
.article-rte h2 {
  margin: 52px 0 18px;
  padding-bottom: 12px;
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.article-rte h3 {
  margin: 42px 0 14px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
}
.article-rte h4 {
  margin: 30px 0 12px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}
.article-rte a {
  color: var(--green);
  border-bottom: 1px solid rgba(41, 242, 177, 0.35);
  transition: border-color 0.2s;
}
.article-rte a:hover {
  border-color: var(--green);
}
.article-rte strong {
  color: #fff;
  font-weight: 700;
}
.article-rte img {
  width: auto;
  max-width: 100%;
  margin: 34px auto;
  border-radius: 14px;
  border: 1px solid var(--line);
}
.article-rte ul,
.article-rte ol {
  margin: 0 0 26px;
  padding: 0;
  padding-left: 22px;
}
.article-rte li {
  margin-bottom: 10px;
  padding-left: 4px;
}
.article-rte blockquote {
  position: relative;
  margin: 36px 0;
  padding: 22px 26px 22px 30px;
  border-radius: 14px;
  background: rgba(41, 242, 177, 0.045);
  border: 1px solid rgba(41, 242, 177, 0.12);
  border-left: 4px solid var(--green);
}
.article-rte blockquote p {
  margin: 0;
  font-size: 16px;
}
.article-rte code {
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(138, 124, 255, 0.09);
  color: #C9C1FF;
  font-size: 14px;
}
.article-rte pre {
  overflow-x: auto;
  margin: 32px 0;
  padding: 22px 24px;
  background: #0D1319;
  border: 1px solid var(--line);
  border-radius: 14px;
  line-height: 1.7;
}
.article-rte pre code {
  padding: 0;
  background: none;
  color: #C9D6D2;
}
.article-rte table {
  width: 100%;
  margin: 30px 0;
  border-collapse: collapse;
  border-radius: 10px;
  overflow: hidden;
  font-size: 15px;
}
.article-rte th,
.article-rte td {
  padding: 12px 16px;
  border: 1px solid var(--line);
  text-align: left;
}
.article-rte th {
  background: rgba(138, 124, 255, 0.06);
  color: #fff;
  font-size: 14px;
}
.article-rte hr {
  border: 0;
  height: 1px;
  margin: 52px 0;
  background: var(--line);
}
.article-rte .entry-note,
.article-rte .notice {
  border-left: 4px solid var(--green);
  background: rgba(41, 242, 177, 0.045);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 30px 0;
  color: #CFEADE;
  font-size: 15px;
}
.article-rte .warning {
  border-left-color: var(--orange);
  background: rgba(255, 122, 26, 0.05);
  color: #F3DED0;
}

/* ===== Article page nav ===== */
.article-pagenav-section {
  padding: 28px 0 72px;
}
.article-pagenav {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 0 0;
  border-top: 1px solid var(--line);
}
.pagenav-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  color: var(--text-2);
  transition: color 0.2s, border-color 0.2s;
}
.pagenav-link:hover {
  color: var(--green);
}
.pagenav-link svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
}
.pagenav-link--next {
  margin-left: auto;
}
.pagenav-center {
  display: inline-flex;
}
.article-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 42px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 14px;
  color: var(--text-2);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.article-back-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background: rgba(41, 242, 177, 0.04);
}
.article-back-btn svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

/* ===== NotFound ===== */
.not-found {
  padding: 120px 0 96px;
}
.not-found-card {
  position: relative;
  max-width: 660px;
  margin: 0 auto;
  text-align: center;
  padding: 70px 44px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    radial-gradient(circle at 50% 0%, rgba(41, 242, 177, 0.06), transparent 60%),
    rgba(17, 24, 32, 0.6);
  overflow: hidden;
}
.not-found-icon {
  display: inline-flex;
  width: 74px;
  height: 74px;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  border-radius: 24px;
  background: rgba(255, 122, 26, 0.1);
  border: 1px solid rgba(255, 122, 26, 0.22);
  color: var(--orange);
  font-size: 38px;
  font-weight: 700;
}
.not-found-title {
  margin: 0 0 16px;
  font-size: 34px;
  font-weight: 800;
  color: #fff;
}
.not-found-card p {
  margin: 0 auto 36px;
  color: var(--text-2);
  max-width: 420px;
  font-size: 15px;
}

/* ===== Related / content cards ===== */
.related-section {
  padding: 70px 0 88px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(17, 24, 32, 0.3), transparent 240px);
}
.section-head {
  margin-bottom: 42px;
}
.section-eyebrow {
  display: block;
  margin-bottom: 10px;
  color: var(--green);
  font-size: 13px;
  letter-spacing: 0.12em;
}
.section-title {
  margin: 0;
  font-size: clamp(25px, 3vw, 32px);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}
.section-desc {
  margin: 14px 0 0;
  max-width: 620px;
  color: var(--text-2);
  font-size: 15px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.22s ease-out, box-shadow 0.22s ease-out, transform 0.22s ease-out;
}
.related-card:hover {
  border-color: rgba(41, 242, 177, 0.32);
  box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.06), 0 12px 30px rgba(0, 0, 0, 0.22);
  transform: translateY(-3px);
}
.related-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--surface-2);
}
.related-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease-out;
}
.related-card:hover .related-card__cover img {
  transform: scale(1.025);
}
.related-card__tag {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 1;
  padding: 6px 12px;
  background: rgba(10, 14, 18, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  font-size: 12px;
  color: var(--green);
  backdrop-filter: blur(4px);
}
.related-card__body {
  display: flex;
  flex-direction: column;
  padding: 22px 22px 20px;
  flex: 1;
}
.related-card__title {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  line-height: 1.45;
  transition: color 0.2s;
}
.related-card:hover .related-card__title {
  color: var(--green);
}
.related-card__desc {
  margin: 0 0 20px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  font-size: 13px;
  color: var(--text-3);
}
.related-card__more {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-2);
  transition: color 0.2s;
}
.related-card__more svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  transition: transform 0.2s;
}
.related-card:hover .related-card__more {
  color: var(--green);
}
.related-card:hover .related-card__more svg {
  transform: translateX(3px);
}

/* ===== Footer ===== */
.site-footer {
  background: #070A0D;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 72px 0 0;
}
.site-footer .container {
  max-width: 1200px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 46px;
  padding-bottom: 48px;
}
.footer-brand__logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
}
.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px rgba(41, 242, 177, 0.8);
  display: inline-block;
}
.footer-brand__desc {
  margin: 0;
  max-width: 360px;
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.9;
}
.footer-title {
  margin: 0 0 20px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.03em;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a,
.footer-links span {
  color: var(--text-3);
  font-size: 14px;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--green);
}
.footer-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-3);
  font-size: 13px;
}
.footer-note .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.04em;
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .header-shell {
    gap: 16px;
  }
  .site-nav {
    position: fixed;
    top: 72px;
    left: 24px;
    right: 24px;
    z-index: 70;
    background: rgba(14, 19, 24, 0.97);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 18px 16px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.22s ease-out, transform 0.22s ease-out;
    flex-direction: column;
    align-items: stretch;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-nav__link {
    padding: 15px 6px;
    margin: 0;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
  }
  .site-nav__link::after {
    display: none;
  }
  .site-nav__link.is-active {
    color: var(--green);
  }
  body.nav-open .site-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  body.nav-open .site-nav {
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(41, 242, 177, 0.1);
  }
  .header-cta {
    margin: 18px 0 0;
  }
  .header-cta .btn {
    width: 100%;
  }
  .article-banner {
    padding: 62px 0 58px;
  }
  .site-logo {
    margin-right: 0;
  }
  .logo-word {
    font-size: 16px;
  }
}
@media (max-width: 768px) {
  .container {
    width: min(100% - 36px, 1200px);
  }
  .article-rte {
    font-size: 15px;
  }
  .article-rte h2 {
    font-size: 22px;
  }
  .article-rte h3 {
    font-size: 18px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
}
@media (max-width: 520px) {
  .logo-word {
    max-width: 122px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .hero-action {
    min-width: 0;
  }
  .article-hero-meta .meta-chip {
    padding: 8px 12px;
    font-size: 12px;
  }
  .related-card__body {
    padding: 18px;
  }
  .footer-note {
    justify-content: center;
    text-align: center;
  }
}

/* roulang page: category1 */
:root{
    --bg:#0A0E12;
    --bg-2:#111820;
    --bg-3:#17202A;
    --green:#29F2B1;
    --orange:#FF7A1A;
    --purple:#8A7CFF;
    --danger:#FF4D6D;
    --text:#F0F5F3;
    --subtext:#A7B2B8;
    --muted:#6B7A80;
    --border:rgba(255,255,255,0.08);
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:10px;
    --radius-xs:6px;
    --shadow-card:0 18px 42px rgba(0,0,0,0.24);
    --shadow-green:0 0 0 1px rgba(41,242,177,0.28), 0 0 24px rgba(41,242,177,0.14);
    --font-stack:system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth;scroll-padding-top:92px}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-stack);
    font-size:15px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  body.no-scroll{overflow:hidden}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .22s ease}
  button{font-family:inherit;border:0;background:none;cursor:pointer}
  ul,ol{list-style:none}
  h1,h2,h3,h4{line-height:1.3;font-weight:700;letter-spacing:-0.01em}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
  .mono{font-variant-numeric:tabular-nums;letter-spacing:.02em}
  .no-wrap{white-space:nowrap}

  .section{padding:84px 0}
  .section--soft{
    background:linear-gradient(180deg,rgba(10,14,18,0) 0%,rgba(17,24,32,.68) 18%,rgba(17,24,32,.68) 82%,rgba(10,14,18,0) 100%);
    border-top:1px solid rgba(255,255,255,.04);
    border-bottom:1px solid rgba(255,255,255,.04);
  }
  .section-heading{max-width:780px;margin-bottom:42px}
  .section-heading.is-center{margin-inline:auto;text-align:center}
  .section-heading h2{font-size:clamp(26px,3vw,34px);margin-bottom:14px}
  .section-heading p{color:var(--subtext)}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    letter-spacing:.14em;
    color:var(--green);
    text-transform:uppercase;
    margin-bottom:12px;
  }
  .eyebrow::before{
    content:"";
    width:18px;height:2px;background:var(--green);
    box-shadow:0 0 10px rgba(41,242,177,.55);
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 24px;
    border-radius:var(--radius-sm);
    font-weight:600;
    border:1px solid transparent;
    transition:box-shadow .22s ease,border-color .22s ease,background .22s ease,transform .22s ease;
  }
  .btn--primary{
    background:linear-gradient(135deg,#FF7A1A 0%,#FF9D40 100%);
    color:#120D08;
    box-shadow:0 6px 20px rgba(255,122,26,.16);
  }
  .btn--primary:hover{
    box-shadow:0 0 0 1px rgba(255,122,26,.36),0 0 28px rgba(255,122,26,.22);
    transform:translateY(-1px);
  }
  .btn--primary:active{transform:translateY(0)}
  .btn--ghost{
    color:var(--text);
    border-color:rgba(255,255,255,.22);
    background:rgba(255,255,255,.02);
  }
  .btn--ghost:hover{
    border-color:rgba(41,242,177,.72);
    color:var(--green);
    box-shadow:0 0 0 1px rgba(41,242,177,.22);
  }
  .btn--sm{min-height:38px;padding:0 18px;font-size:14px;border-radius:9px}

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  summary:focus-visible{
    outline:2px solid var(--green);
    outline-offset:3px;
    border-radius:4px;
  }

  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(10,14,18,.88);
    border-bottom:1px solid var(--border);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .header-bar{
    display:flex;
    align-items:center;
    gap:18px;
    min-height:64px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:19px;
    font-weight:800;
    letter-spacing:-0.01em;
    color:#fff;
    flex-shrink:0;
  }
  .brand-mark{
    width:9px;height:9px;
    border-radius:99px;
    background:var(--green);
    box-shadow:0 0 0 4px rgba(41,242,177,.12),0 0 16px rgba(41,242,177,.5);
    flex:none;
  }
  .brand:hover{color:#fff}

  .site-nav{
    display:flex;
    align-items:center;
    gap:14px;
    margin-left:auto;
  }
  .site-nav__list{
    display:flex;
    align-items:center;
    gap:2px 30px;
  }
  .site-nav__link{
    position:relative;
    display:block;
    padding:20px 2px 18px;
    color:var(--subtext);
    font-size:15px;
    font-weight:500;
    line-height:1.2;
    white-space:nowrap;
  }
  .site-nav__link::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:-1px;
    height:2px;
    background:var(--green);
    box-shadow:0 0 12px rgba(41,242,177,.7);
    border-radius:99px;
    transform:scaleX(0);
    transform-origin:center;
    transition:transform .22s ease-out;
  }
  .site-nav__link:hover{color:#fff}
  .site-nav__link:hover::after{transform:scaleX(.56)}
  .site-nav__link.is-active{
    color:#fff;
    font-weight:600;
  }
  .site-nav__link.is-active::after{transform:scaleX(1)}

  .header-cta{display:flex;align-items:center;gap:12px}
  .header-cta .btn--primary{
    background:linear-gradient(135deg,#FF7A1A,#FF9D40);
    color:#180E07;
  }

  .menu-toggle{
    display:none;
    width:42px;height:42px;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
    border-radius:10px;
    border:1px solid rgba(255,255,255,.1);
    background:rgba(255,255,255,.02);
  }
  .menu-toggle span{
    width:18px;height:2px;
    background:#E9F4F0;
    border-radius:99px;
    transition:transform .22s ease,opacity .22s ease;
  }
  .menu-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle.active span:nth-child(2){opacity:0}
  .menu-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  .page-hero{
    position:relative;
    padding:76px 0 86px;
    overflow:hidden;
    background:
      linear-gradient(180deg,rgba(10,14,18,.62) 0%,rgba(10,14,18,.92) 100%),
      linear-gradient(135deg,rgba(41,242,177,.12) 0%,rgba(41,242,177,0) 36%,rgba(255,122,26,.14) 100%),
      url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    border-bottom:1px solid var(--border);
  }
  .page-hero::before{
    content:"";
    position:absolute;
    inset:0;
    pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
    background-size:42px 42px;
    opacity:.4;
  }
  .page-hero .container{position:relative;z-index:2}
  .page-hero__grid{
    display:grid;
    grid-template-columns:minmax(0,1.24fr) minmax(300px,.76fr);
    gap:64px;
    align-items:center;
  }

  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--muted);
    margin-bottom:24px;
  }
  .breadcrumb a{color:var(--subtext)}
  .breadcrumb a:hover{color:var(--green)}
  .breadcrumb .sep{color:rgba(255,255,255,.24);font-size:12px}
  .breadcrumb .current{color:var(--green)}

  .page-hero__title{
    font-size:clamp(34px,4.7vw,48px);
    line-height:1.18;
    letter-spacing:-0.03em;
    font-weight:800;
    max-width:780px;
    margin-bottom:24px;
  }
  .page-hero__title .accent{
    color:var(--green);
    text-shadow:0 0 22px rgba(41,242,177,.18);
  }
  .page-hero__desc{
    font-size:16px;
    color:var(--subtext);
    max-width:620px;
    margin-bottom:12px;
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:34px;
    align-items:center;
  }

  .status-mini{
    background:linear-gradient(150deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    border:1px solid rgba(255,255,255,.13);
    border-radius:var(--radius-lg);
    padding:24px;
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    box-shadow:var(--shadow-card);
    position:relative;
  }
  .status-mini::after{
    content:"";
    position:absolute;
    top:-1px;left:24px;right:24px;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(41,242,177,.72),transparent);
  }
  .status-mini__head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding-bottom:16px;
    border-bottom:1px solid rgba(255,255,255,.08);
    margin-bottom:18px;
  }
  .status-mini__head h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:9px}
  .status-live{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--green);
    background:rgba(41,242,177,.1);
    border-radius:99px;
    padding:3px 10px;
  }
  .status-live::before{
    content:"";
    width:7px;height:7px;
    border-radius:99px;
    background:var(--green);
    box-shadow:0 0 0 0 rgba(41,242,177,.5);
    animation:pulse 1.8s ease-out infinite;
  }
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(41,242,177,.4)}
    60%{box-shadow:0 0 0 7px rgba(41,242,177,0)}
    100%{box-shadow:0 0 0 0 rgba(41,242,177,0)}
  }
  .status-mini dl{
    display:flex;
    flex-direction:column;
    gap:13px;
  }
  .status-mini__row{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:16px;
    padding:9px 0 3px;
    border-bottom:1px dashed rgba(255,255,255,.05);
  }
  .status-mini__row:last-child{border-bottom:0}
  .status-mini__row dt{color:var(--subtext);font-size:14px}
  .status-mini__row dd{
    display:flex;
    align-items:center;
    gap:7px;
    font-size:14px;
    font-weight:600;
    color:var(--text);
    text-align:right;
    white-space:nowrap;
  }
  .status-dot{
    width:7px;height:7px;border-radius:99px;background:var(--purple);flex:none;
  }
  .status-dot.ok{background:var(--green);box-shadow:0 0 8px rgba(41,242,177,.5)}
  .status-dot.orange{background:var(--orange)}
  .status-mini__note{
    margin-top:18px;
    padding:12px 14px;
    border-radius:10px;
    background:rgba(255,255,255,.03);
    border-left:2px solid rgba(41,242,177,.6);
    font-size:13px;
    color:var(--muted);
    line-height:1.65;
  }

  .entry-status__layout{
    display:grid;
    grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
    gap:28px;
    align-items:stretch;
  }
  .status-panel{
    background:linear-gradient(180deg,rgba(23,32,42,.72),rgba(17,24,32,.96));
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:32px;
    box-shadow:var(--shadow-card);
    position:relative;
    overflow:hidden;
  }
  .status-panel::before{
    content:"";
    position:absolute;
    left:0;top:0;bottom:0;
    width:3px;
    background:linear-gradient(180deg,var(--green),rgba(41,242,177,.08));
  }
  .panel-title{
    display:flex;
    align-items:center;
    gap:12px;
    font-size:20px;
    margin-bottom:8px;
  }
  .panel-title .mini-badge{
    font-size:12px;
    background:rgba(41,242,177,.13);
    color:var(--green);
    border-radius:99px;
    padding:2px 10px;
    font-weight:600;
    letter-spacing:.04em;
  }
  .panel-desc{color:var(--subtext);margin-bottom:24px;font-size:14px}
  .status-table{
    display:flex;
    flex-direction:column;
    border-top:1px solid var(--border);
  }
  .status-table__row{
    display:grid;
    grid-template-columns:110px minmax(0,1fr) auto;
    gap:14px;
    padding:14px 4px;
    border-bottom:1px solid var(--border);
    align-items:center;
  }
  .status-table__row:first-child{padding-top:18px}
  .status-table__label{
    color:var(--muted);
    font-size:13px;
    font-weight:600;
  }
  .status-table__value{color:var(--subtext);font-size:14px}
  .status-table__state{
    display:inline-flex;
    align-items:center;
    gap:7px;
    font-size:13px;
    font-weight:700;
    color:var(--green);
    background:rgba(41,242,177,.08);
    border:1px solid rgba(41,242,177,.16);
    border-radius:99px;
    padding:3px 11px;
    white-space:nowrap;
  }
  .status-table__state.ready{color:var(--green)}
  .status-table__state.warn{color:#FFC978;border-color:rgba(255,201,120,.28);background:rgba(255,201,120,.08)}
  .status-tip{
    margin-top:22px;
    padding:13px 16px;
    font-size:13px;
    line-height:1.75;
    color:var(--muted);
    border-radius:10px;
    background:rgba(255,255,255,.03);
    border:1px dashed rgba(255,255,255,.09);
  }

  .reminder-stack{
    display:grid;
    gap:16px;
    align-content:start;
  }
  .reminder-card{
    background:var(--bg-3);
    border:1px solid var(--border);
    border-radius:var(--radius-md);
    padding:22px 22px 22px 56px;
    position:relative;
  }
  .reminder-card .reminder-icon{
    position:absolute;
    left:4px;top:22px;
    width:40px;height:40px;
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--purple);
  }
  .reminder-card h3{font-size:16px;margin-bottom:5px}
  .reminder-card p{color:var(--subtext);font-size:14px;line-height:1.7}

  .steps-layout{
    display:grid;
    grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
    gap:50px;
    align-items:center;
  }
  .login-steps{position:relative;padding-left:14px}
  .login-step{
    position:relative;
    padding:0 0 30px 50px;
    border-left:1px solid rgba(255,255,255,.09);
  }
  .login-step:last-child{
    padding-bottom:0;
    border-left-color:transparent;
  }
  .login-step::before{
    content:"";
    position:absolute;
    left:-5px;
    top:0;
    width:9px;height:9px;
    border-radius:99px;
    background:var(--bg);
    border:2px solid var(--green);
    box-shadow:0 0 12px rgba(41,242,177,.42);
  }
  .login-step__num{
    position:absolute;
    left:-4px;
    top:16px;
    width:56px;
    font-size:13px;
    font-weight:800;
    color:rgba(255,255,255,.2);
    letter-spacing:.08em;
  }
  .login-step h3{
    font-size:17px;
    font-weight:700;
    margin-bottom:7px;
    padding-top:8px;
  }
  .login-step p{
    color:var(--subtext);
    font-size:14px;
    max-width:420px;
  }
  .login-step__meta{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:8px;
    font-size:12px;
    color:var(--green);
  }
  .login-step__meta::before{
    content:"";
    width:4px;height:4px;
    background:var(--green);
    border-radius:99px;
  }

  .media-panel{
    border-radius:var(--radius-lg);
    overflow:hidden;
    background:var(--bg-2);
    border:1px solid var(--border);
    box-shadow:var(--shadow-card);
  }
  .media-panel img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
  }
  .media-panel__body{padding:22px 24px 26px}
  .media-panel__body h3{font-size:18px;margin-bottom:6px}
  .media-panel__body p{color:var(--subtext);font-size:14px}
  .media-panel__tag{
    display:inline-flex;
    margin-bottom:14px;
    color:var(--green);
    font-size:12px;
    letter-spacing:.08em;
    font-weight:600;
    border:1px solid rgba(41,242,177,.22);
    background:rgba(41,242,177,.08);
    padding:2px 9px;
    border-radius:99px;
  }

  .env-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:22px;
  }
  .env-card{
    background:var(--bg-2);
    border:1px solid var(--border);
    border-radius:var(--radius-md);
    padding:28px 24px;
    transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
  }
  .env-card:hover{
    border-color:rgba(41,242,177,.38);
    box-shadow:var(--shadow-green);
    transform:translateY(-2px);
  }
  .env-card__icon{
    width:45px;height:45px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:12px;
    color:var(--green);
    background:rgba(41,242,177,.09);
    border:1px solid rgba(41,242,177,.14);
    margin-bottom:18px;
  }
  .env-card h3{font-size:17px;margin-bottom:8px}
  .env-card p{color:var(--subtext);font-size:14px}
  .env-card__line{
    margin-top:14px;
    font-size:14px;
    font-weight:600;
    color:var(--text);
    display:flex;
    gap:8px;
  }
  .env-card__line svg{color:var(--purple);flex:none}

  .faq-grid{
    max-width:900px;
    margin-inline:auto;
    display:grid;
    gap:16px;
  }
  .faq-item{
    border:1px solid var(--border);
    background:var(--bg-2);
    border-radius:var(--radius-md);
    overflow:hidden;
    transition:border-color .22s ease,box-shadow .22s ease;
  }
  .faq-item[open]{
    border-color:rgba(41,242,177,.32);
    box-shadow:0 0 0 1px rgba(41,242,177,.08),0 18px 38px rgba(0,0,0,.18);
  }
  .faq-item summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:20px 24px;
    cursor:pointer;
    font-weight:600;
    font-size:16px;
    color:var(--text);
    list-style:none;
    position:relative;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--green)}
  .faq-item[open] summary{color:var(--green)}
  .faq-item__icon{
    width:28px;height:28px;
    flex:none;
    border-radius:99px;
    border:1px solid rgba(255,255,255,.14);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:var(--subtext);
    transition:transform .22s ease,background .22s ease,color .22s ease;
  }
  .faq-item__icon::after{
    content:"+";
    font-size:18px;line-height:1;font-weight:400;
  }
  .faq-item[open] .faq-item__icon{
    transform:rotate(45deg);
    color:var(--green);
    border-color:rgba(41,242,177,.4);
    background:rgba(41,242,177,.08);
  }
  .faq-answer{
    padding:0 24px 22px;
    color:var(--subtext);
    font-size:14px;
  }
  .faq-answer p + p{margin-top:12px}

  .cta-zone{
    padding:60px 0 96px;
  }
  .cta-panel{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:36px;
    padding:44px 50px;
    border-radius:var(--radius-lg);
    background:
      radial-gradient(circle at 12% 28%,rgba(41,242,177,.11),transparent 32%),
      radial-gradient(circle at 92% 16%,rgba(255,122,26,.14),transparent 32%),
      var(--bg-2);
    border:1px solid var(--border);
    overflow:hidden;
  }
  .cta-panel::before{
    content:"";
    position:absolute;
    top:0;left:0;right:0;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(41,242,177,.72),transparent);
  }
  .cta-panel h2{font-size:clamp(24px,3vw,32px);margin-bottom:8px}
  .cta-panel p{color:var(--subtext);font-size:15px}
  .cta-panel__actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}

  .site-footer{
    background:#080C10;
    border-top:1px solid rgba(41,242,177,.13);
    padding:64px 0 28px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:minmax(0,1.45fr) repeat(3,minmax(0,.85fr));
    gap:42px;
    padding-bottom:44px;
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .footer-brand__logo{
    display:flex;
    align-items:center;
    gap:9px;
    color:#fff;
    font-weight:800;
    font-size:18px;
    margin-bottom:14px;
  }
  .dot{
    width:8px;height:8px;border-radius:99px;
    background:var(--green);
    box-shadow:0 0 14px rgba(41,242,177,.6);
    flex:none;
  }
  .footer-brand__desc{color:var(--muted);font-size:14px;max-width:300px}
  .footer-title{
    font-size:15px;
    color:var(--text);
    margin-bottom:16px;
    position:relative;
    padding-bottom:9px;
  }
  .footer-title::after{
    content:"";
    position:absolute;
    left:0;bottom:0;
    width:22px;height:2px;
    background:var(--green);
    box-shadow:0 0 8px rgba(41,242,177,.4);
  }
  .footer-links{
    display:flex;
    flex-direction:column;
    gap:9px;
    font-size:14px;
    color:var(--subtext);
    line-height:1.6;
  }
  .footer-links a:hover{color:var(--green)}
  .footer-note{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    align-items:center;
    gap:10px;
    padding-top:24px;
    color:var(--muted);
    font-size:13px;
  }
  .footer-note .mono{letter-spacing:.04em}

  @media (max-width: 1024px){
    .page-hero{min-height:auto;padding:54px 0 68px}
    .env-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px}
  }

  @media (max-width: 960px){
    .section{padding:72px 0}
    .menu-toggle{display:flex}
    .site-nav{
      position:absolute;
      top:calc(100% - 1px);
      left:16px;
      right:16px;
      display:block;
      margin:0;
      background:rgba(10,14,18,.96);
      border:1px solid var(--border);
      border-radius:0 0 16px 16px;
      border-top-color:rgba(41,242,177,.28);
      padding:0 16px;
      max-height:0;
      opacity:0;
      pointer-events:none;
      overflow:hidden;
      transform:translateY(-8px);
      transition:max-height .28s ease,transform .28s ease,opacity .22s ease,padding .28s ease;
    }
    .site-nav.nav-open{
      max-height:560px;
      opacity:1;
      pointer-events:auto;
      transform:translateY(0);
      padding:12px 18px 20px;
      box-shadow:0 24px 48px rgba(0,0,0,.4);
    }
    .site-nav__list{
      display:grid;
      gap:2px;
    }
    .site-nav__link{
      display:block;
      padding:12px 4px;
      border-bottom:1px solid rgba(255,255,255,.07);
      white-space:normal;
    }
    .site-nav__link::after{display:none}
    .site-nav__link.is-active{
      color:var(--green);
      padding-left:12px;
      border-left:2px solid var(--green);
      background:linear-gradient(90deg,rgba(41,242,177,.08),transparent);
    }
    .header-cta{margin-top:18px}
    .page-hero__grid{
      grid-template-columns:1fr;
      gap:40px;
    }
    .status-mini{max-width:520px}
    .entry-status__layout{grid-template-columns:1fr}
    .steps-layout{grid-template-columns:1fr;gap:42px}
    .media-panel{max-width:620px}
  }

  @media (max-width: 640px){
    .container{padding:0 14px}
    .section{padding:60px 0}
    .brand{gap:8px;font-size:16px}
    .brand-mark{width:7px;height:7px}
    .menu-toggle{width:40px;height:40px}
    .page-hero{padding:44px 0 56px}
    .page-hero__title{font-size:32px}
    .page-hero__desc{font-size:15px}
    .hero-actions{flex-direction:column;align-items:stretch}
    .hero-actions .btn{width:100%}
    .status-table__row{grid-template-columns:1fr 1fr;row-gap:8px}
    .status-table__state{justify-self:start}
    .env-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:26px}
    .footer-note{flex-direction:column;align-items:flex-start}
    .cta-panel{flex-direction:column;align-items:flex-start;padding:30px 24px}
    .cta-panel__actions{width:100%}
    .cta-panel__actions .btn{width:100%}
    .login-step{padding-left:44px}
    .login-step__num{width:46px}
    .faq-item summary{padding:17px 16px}
    .faq-answer{padding:0 16px 18px}
    .status-panel{padding:24px 18px}
  }

/* roulang page: category2 */
:root {
    --bg: #0A0E12;
    --surface: #111820;
    --surface-2: #17202A;
    --primary: #29F2B1;
    --cta: #FF7A1A;
    --cta-light: #FF9D45;
    --violet: #8A7CFF;
    --text: #F0F5F3;
    --text-2: #A7B2B8;
    --text-3: #6B7A80;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.14);
    --danger: #FF4D6D;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --section-gap: 88px;
    --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
  }

  body.no-scroll {
    overflow: hidden;
  }

  img {
    max-width: 100%;
    display: block;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 4px;
  }

  button {
    font-family: inherit;
    border: 0;
    background: none;
    cursor: pointer;
  }

  .container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 20px;
  }

  .mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    letter-spacing: 0.02em;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 18, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
  }

  .header-inner {
    height: 64px;
    display: flex;
    align-items: center;
    gap: 32px;
  }

  .site-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text);
  }

  .site-logo .brand-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 14px rgba(41, 242, 177, 0.7);
    flex-shrink: 0;
  }

  .site-nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 14px;
  }

  .site-nav__list {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .site-nav__link {
    position: relative;
    display: inline-block;
    padding: 9px 15px;
    color: var(--text-2);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
    border-radius: 8px;
    transition: color 0.22s ease;
  }

  .site-nav__link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--primary);
    box-shadow: 0 0 12px rgba(41, 242, 177, 0.8);
    transform: translateX(-50%);
    transition: width 0.22s ease-out;
  }

  .site-nav__link:hover {
    color: var(--text);
  }

  .site-nav__link:hover::after {
    width: 50%;
  }

  .site-nav__link.is-active {
    color: var(--text);
  }

  .site-nav__link.is-active::after {
    width: 100%;
  }

  .nav-toggle {
    display: none;
    margin-left: auto;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border: 1px solid var(--line-strong);
  }

  .nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.22s ease, opacity 0.22s ease;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 24px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    transition: box-shadow 0.22s ease, border-color 0.22s ease, background 0.22s ease, transform 0.22s ease;
  }

  .btn--primary {
    background: linear-gradient(135deg, var(--cta), var(--cta-light));
    color: #191410;
    box-shadow: 0 8px 24px rgba(255, 122, 26, 0.16);
  }

  .btn--primary:hover {
    box-shadow: 0 0 0 1px rgba(255, 122, 26, 0.35), 0 0 26px rgba(255, 122, 26, 0.22);
    transform: translateY(-1px);
  }

  .btn--ghost {
    background: transparent;
    border-color: var(--line-strong);
    color: var(--text);
  }

  .btn--ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.2), 0 0 20px rgba(41, 242, 177, 0.1);
  }

  .btn--sm {
    height: 38px;
    padding: 0 16px;
    font-size: 14px;
  }

  .section {
    padding: var(--section-gap) 0;
    position: relative;
  }

  .section-head {
    max-width: 780px;
    margin-bottom: 44px;
  }

  .section-head--center {
    margin-inline: auto;
    text-align: center;
  }

  .section-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(41, 242, 177, 0.1);
    border: 1px solid rgba(41, 242, 177, 0.22);
    border-radius: 999px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 14px;
  }

  .section-title {
    margin: 0 0 12px;
    font-size: 32px;
    line-height: 1.3;
    letter-spacing: -0.02em;
    font-weight: 800;
  }

  .section-desc {
    margin: 0;
    color: var(--text-2);
    font-size: 16px;
  }

  .entry-hero {
    position: relative;
    overflow: hidden;
    background-color: var(--bg);
    background-image: linear-gradient(90deg, rgba(10, 14, 18, 0.98) 0%, rgba(10, 14, 18, 0.84) 52%, rgba(10, 14, 18, 0.62) 100%),
      url("/assets/images/backpic/back-2.webp");
    background-size: cover;
    background-position: center;
  }

  .entry-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 44px 44px;
    opacity: 0.4;
  }

  .hero-inner {
    position: relative;
    z-index: 2;
    padding-top: 92px;
    padding-bottom: 92px;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
    gap: 64px;
    align-items: center;
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.06em;
    margin-bottom: 18px;
  }

  .hero-eyebrow::before {
    content: "";
    width: 22px;
    height: 1px;
    background: var(--primary);
    box-shadow: 0 0 8px rgba(41, 242, 177, 0.7);
  }

  .entry-hero h1 {
    margin: 0 0 18px;
    max-width: 760px;
    font-size: clamp(36px, 5vw, 52px);
    line-height: 1.18;
    letter-spacing: -0.02em;
    font-weight: 800;
  }

  .hero-lead {
    max-width: 620px;
    margin: 0 0 16px;
    color: var(--text-2);
    font-size: 17px;
    line-height: 1.9;
  }

  .hero-note {
    color: var(--text-3);
    font-size: 14px;
    margin: 18px 0 0;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .hero-note svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
  }

  .hero-guide-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(10px);
    padding: 28px;
    position: relative;
    overflow: hidden;
  }

  .hero-guide-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent 70%);
    opacity: 0.7;
  }

  .guide-card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
  }

  .guide-card__head h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
  }

  .guide-pill {
    display: inline-flex;
    align-items: center;
    color: var(--violet);
    background: rgba(138, 124, 255, 0.12);
    border: 1px solid rgba(138, 124, 255, 0.3);
    border-radius: 999px;
    padding: 3px 10px;
    font-size: 12px;
    white-space: nowrap;
  }

  .guide-list {
    list-style: none;
    margin: 0 0 24px;
    padding: 0;
    display: grid;
    gap: 14px;
  }

  .guide-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.7;
  }

  .guide-list svg {
    width: 18px;
    height: 18px;
    margin-top: 4px;
    flex-shrink: 0;
    color: var(--primary);
  }

  .guide-divider {
    height: 1px;
    background: var(--line);
    margin: 0 0 18px;
  }

  .guide-extra {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--text-3);
    font-size: 13px;
  }

  .guide-extra .mono {
    color: var(--text-2);
  }

  .steps-section {
    background: var(--bg);
  }

  .steps-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.6fr;
    gap: 48px;
    align-items: start;
  }

  .steps-side .steps-tip {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 22px;
    margin-top: 28px;
    font-size: 14px;
    color: var(--text-2);
    border-left: 3px solid var(--primary);
    line-height: 1.9;
  }

  .steps-tip strong {
    color: var(--primary);
  }

  .timeline {
    position: relative;
    padding-left: 52px;
  }

  .timeline::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 10px;
    bottom: 12px;
    width: 1px;
    background: linear-gradient(180deg, rgba(41, 242, 177, 0.85), rgba(41, 242, 177, 0.06));
  }

  .timeline-item {
    position: relative;
    padding-bottom: 38px;
  }

  .timeline-item:last-child {
    padding-bottom: 0;
  }

  .timeline-item::before {
    content: "";
    position: absolute;
    left: -7px;
    top: 24px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 14px rgba(41, 242, 177, 0.8);
  }

  .timeline-step {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 24px 26px;
    transition: border-color 0.22s ease, box-shadow 0.22s ease;
  }

  .timeline-step:hover {
    border-color: rgba(41, 242, 177, 0.28);
    box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.08), 0 10px 34px rgba(0, 0, 0, 0.18);
  }

  .timeline-step h3 {
    margin: 0 0 8px;
    font-size: 19px;
    font-weight: 700;
    line-height: 1.4;
  }

  .timeline-step h3 .step-mini {
    margin-right: 10px;
    font-size: 14px;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
  }

  .timeline-step p {
    margin: 0 0 10px;
    color: var(--text-2);
    font-size: 15px;
  }

  .step-meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .mini-tag {
    display: inline-flex;
    align-items: center;
    padding: 3px 9px;
    background: rgba(138, 124, 255, 0.1);
    border: 1px solid rgba(138, 124, 255, 0.22);
    border-radius: var(--radius-xs);
    color: #c4bdff;
    font-size: 12px;
    line-height: 1.6;
  }

  .prep-section {
    background: #0d1217;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .prep-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    gap: 64px;
    align-items: center;
  }

  .check-list {
    display: grid;
    gap: 16px;
    margin-top: 10px;
  }

  .check-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 20px 22px;
    transition: border-color 0.22s ease, transform 0.22s ease;
  }

  .check-item:hover {
    border-color: rgba(41, 242, 177, 0.35);
    transform: translateX(3px);
  }

  .check-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: rgba(41, 242, 177, 0.1);
    border: 1px solid rgba(41, 242, 177, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .check-icon svg {
    width: 20px;
    height: 20px;
    color: var(--primary);
  }

  .check-item h3 {
    margin: 0 0 5px;
    font-size: 16px;
    line-height: 1.4;
  }

  .check-item p {
    margin: 0;
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.8;
  }

  .prep-visual {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--line-strong);
    box-shadow: 0 20px 54px rgba(0, 0, 0, 0.3);
  }

  .prep-visual img {
    width: 100%;
    height: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.6s ease;
  }

  .prep-visual:hover img {
    transform: scale(1.02);
  }

  .prep-visual .prep-caption {
    position: absolute;
    left: 12px;
    bottom: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 14, 18, 0.82);
    backdrop-filter: blur(8px);
    border: 1px solid var(--line-strong);
    border-radius: 12px;
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text-2);
  }

  .prep-caption strong {
    color: var(--text);
    font-weight: 600;
  }

  .repair-section {
    background: var(--bg);
  }

  .repair-list {
    display: grid;
    gap: 16px;
  }

  .repair-item {
    display: grid;
    grid-template-columns: 210px 42px minmax(0, 1fr);
    align-items: center;
    gap: 24px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 22px 26px;
    transition: border-color 0.22s ease, background 0.22s ease;
  }

  .repair-item:hover {
    background: #141d26;
    border-color: rgba(255, 122, 26, 0.25);
  }

  .repair-item .repair-label {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.5;
  }

  .repair-item .repair-arrow {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255, 122, 26, 0.12);
    border: 1px solid rgba(255, 122, 26, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cta);
    font-size: 18px;
    justify-self: center;
  }

  .repair-item .repair-desc {
    margin: 0;
    color: var(--text-2);
    font-size: 15px;
  }

  .faq-section {
    background: #0d1217;
    border-top: 1px solid var(--line);
  }

  .faq-shell {
    max-width: 880px;
    margin-inline: auto;
  }

  .faq-list {
    display: grid;
    gap: 14px;
  }

  .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.22s ease, box-shadow 0.22s ease;
  }

  .faq-item[open] {
    border-color: rgba(41, 242, 177, 0.34);
    box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.08);
  }

  .faq-item summary {
    position: relative;
    padding: 20px 54px 20px 24px;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.6;
    cursor: pointer;
    list-style: none;
    user-select: none;
    transition: color 0.22s ease, border-left 0.22s ease;
    border-left: 3px solid transparent;
  }

  .faq-item[open] summary {
    color: var(--primary);
    border-left-color: var(--primary);
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary::after {
    content: "+";
    position: absolute;
    right: 20px;
    top: 18px;
    font-size: 21px;
    font-weight: 500;
    color: var(--text-2);
    transition: transform 0.22s ease, color 0.22s ease;
  }

  .faq-item[open] summary::after {
    content: "−";
    color: var(--primary);
    transform: rotate(180deg);
  }

  .faq-answer {
    padding: 0 26px 22px 27px;
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.9;
    border-top: 1px solid var(--line);
  }

  .faq-answer p {
    margin: 16px 0 0;
  }

  .cta-banner {
    background-color: #0d1217;
    position: relative;
    overflow: hidden;
    border-top: 1px solid var(--line);
  }

  .cta-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(10, 14, 18, 0.96), rgba(10, 14, 18, 0.76)),
      url("/assets/images/backpic/back-3.png");
    background-size: cover;
    background-position: center;
    opacity: 0.8;
    z-index: 1;
  }

  .cta-banner .container {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    padding-block: 64px;
    flex-wrap: wrap;
  }

  .cta-text h2 {
    margin: 0 0 8px;
    font-size: 30px;
    line-height: 1.3;
    font-weight: 800;
  }

  .cta-text p {
    margin: 0;
    color: var(--text-2);
    font-size: 16px;
  }

  .site-footer {
    background: #070b0f;
    border-top: 1px solid rgba(41, 242, 177, 0.15);
    padding-top: 64px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 0.9fr 0.9fr 1.2fr;
    gap: 44px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--line);
  }

  .footer-brand__logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 14px;
  }

  .footer-brand__logo .dot {
    width: 7px;
    height: 7px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(41, 242, 177, 0.6);
  }

  .footer-brand__desc {
    margin: 0;
    color: var(--text-3);
    font-size: 14px;
    line-height: 1.9;
    max-width: 330px;
  }

  .site-footer h3 {
    margin: 0 0 16px;
    color: var(--text);
    font-size: 16px;
    font-weight: 700;
  }

  .footer-links {
    display: grid;
    gap: 10px;
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.7;
  }

  .footer-links a {
    color: var(--text-2);
    transition: color 0.2s ease, padding-left 0.2s ease;
  }

  .footer-links a:hover {
    color: var(--primary);
    padding-left: 3px;
  }

  .footer-note {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding-block: 24px;
    color: var(--text-3);
    font-size: 13px;
    flex-wrap: wrap;
  }

  .footer-note .mono {
    color: var(--text-3);
  }

  @media (max-width: 1024px) {
    :root {
      --section-gap: 72px;
    }

    .hero-inner {
      grid-template-columns: 1fr;
      gap: 44px;
    }

    .steps-grid {
      grid-template-columns: 1fr;
      gap: 24px;
    }

    .steps-side {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .steps-side .steps-tip {
      margin-top: 0;
    }

    .prep-grid {
      grid-template-columns: 1fr;
      gap: 36px;
    }

    .prep-visual {
      order: -1;
    }

    .prep-visual img {
      aspect-ratio: 16 / 9;
    }

    .repair-item {
      grid-template-columns: 1fr;
      gap: 14px;
      padding: 20px;
    }

    .repair-item .repair-arrow {
      display: none;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }

    .cta-banner .container {
      flex-direction: column;
      align-items: flex-start;
    }
  }

  @media (max-width: 860px) {
    .nav-toggle {
      display: flex;
    }

    .site-nav {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: rgba(10, 14, 18, 0.96);
      backdrop-filter: blur(16px);
      margin: 0;
      padding: 18px 20px 28px;
      border-bottom: 1px solid var(--line);
      max-height: calc(100vh - 64px);
      overflow-y: auto;
    }

    .site-nav.is-open {
      display: flex;
      flex-direction: column;
      align-items: stretch;
      gap: 16px;
    }

    .site-nav__list {
      flex-direction: column;
      align-items: stretch;
      gap: 4px;
    }

    .site-nav__link {
      padding: 13px 14px;
      font-size: 16px;
      border-radius: 10px;
    }

    .site-nav__link.is-active {
      background: rgba(41, 242, 177, 0.08);
      color: var(--primary);
    }

    .site-nav__link.is-active::after {
      width: 40px;
      left: 14px;
      bottom: 4px;
      transform: none;
    }

    .site-nav__link:hover::after {
      width: 40px;
      left: 14px;
      transform: none;
    }

    .header-cta {
      padding: 4px 0 0;
    }

    .header-cta .btn--sm {
      width: 100%;
    }

    .hero-actions .btn {
      flex: 1 1 auto;
    }
  }

  @media (max-width: 640px) {
    :root {
      --section-gap: 58px;
    }

    body {
      font-size: 14px;
    }

    .site-logo {
      font-size: 15px;
    }

    .header-inner {
      gap: 12px;
    }

    .section-title {
      font-size: 27px;
    }

    .section-head {
      margin-bottom: 32px;
    }

    .entry-hero h1 {
      font-size: 32px;
    }

    .hero-lead {
      font-size: 15px;
    }

    .hero-actions {
      flex-direction: column;
      align-items: stretch;
    }

    .btn {
      width: 100%;
    }

    .hero-guide-card {
      padding: 22px;
    }

    .timeline {
      padding-left: 38px;
    }

    .timeline::before {
      left: 5px;
    }

    .timeline-item::before {
      left: -4px;
      width: 7px;
      height: 7px;
    }

    .timeline-step {
      padding: 20px;
    }

    .timeline-step h3 {
      font-size: 17px;
    }

    .steps-side {
      grid-template-columns: 1fr;
    }

    .check-item {
      padding: 16px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 30px;
    }

    .footer-note {
      flex-direction: column;
      align-items: flex-start;
    }

    .cta-banner .container {
      padding-block: 48px;
    }

    .cta-text h2 {
      font-size: 25px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation: none !important;
      transition: none !important;
      scroll-behavior: auto !important;
    }
  }

/* roulang page: category3 */
:root {
      --bg: #0A0E12;
      --surface: #111820;
      --surface2: #17202A;
      --line: rgba(255, 255, 255, 0.08);
      --line-strong: rgba(255, 255, 255, 0.14);
      --text: #F0F5F3;
      --muted: #A7B2B8;
      --dim: #6B7A80;
      --green: #29F2B1;
      --green-soft: rgba(41, 242, 177, 0.1);
      --green-glow: 0 0 0 1px rgba(41, 242, 177, 0.3), 0 0 24px rgba(41, 242, 177, 0.12);
      --orange: #FF7A1A;
      --orange-soft: rgba(255, 122, 26, 0.12);
      --purple: #8A7CFF;
      --purple-soft: rgba(138, 124, 255, 0.14);
      --danger: #FF4D6D;
      --danger-soft: rgba(255, 77, 109, 0.08);
      --radius-xl: 20px;
      --radius-lg: 14px;
      --radius-md: 10px;
      --radius-sm: 6px;
      --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.24);
      --gap-section: 80px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font);
      font-size: 15px;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

    body.nav-lock {
      overflow: hidden;
    }

    img {
      max-width: 100%;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    ul,
    ol {
      list-style: none;
    }

    button,
    input {
      font: inherit;
      color: inherit;
    }

    button {
      background: none;
      border: 0;
      cursor: pointer;
    }

    :focus-visible {
      outline: 2px solid var(--green);
      outline-offset: 3px;
      border-radius: 6px;
    }

    .container {
      width: min(1180px, 100% - 32px);
      margin-inline: auto;
    }

    .section {
      padding-block: var(--gap-section);
    }

    .section--tight {
      padding-block: 56px;
    }

    .section-tag,
    .eyebrow {
      font-size: 13px;
      font-weight: 600;
      color: var(--green);
      background: var(--green-soft);
      border: 1px solid rgba(41, 242, 177, 0.18);
      border-radius: 999px;
      padding: 5px 12px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      letter-spacing: 0.02em;
    }

    .section-head {
      margin-bottom: 36px;
    }

    .section-head h2 {
      margin-top: 14px;
      font-size: clamp(26px, 3.2vw, 34px);
      line-height: 1.25;
      letter-spacing: -0.02em;
    }

    .section-head p {
      margin-top: 12px;
      max-width: 760px;
      color: var(--muted);
      font-size: 15px;
    }

    .section-line {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(41, 242, 177, 0.4), transparent);
      margin-block: 10px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: var(--radius-md);
      padding: 11px 20px;
      font-size: 15px;
      font-weight: 600;
      line-height: 1.2;
      border: 1px solid transparent;
      transition: border-color 0.22s ease, box-shadow 0.22s ease, background 0.22s ease, color 0.22s ease, transform 0.22s ease;
      white-space: nowrap;
    }

    .btn--primary {
      background: var(--orange);
      color: #0A0E12;
      border-color: rgba(255, 122, 26, 0.75);
      box-shadow: 0 4px 20px rgba(255, 122, 26, 0.18);
    }

    .btn--primary:hover {
      background: #FF8B38;
      box-shadow: 0 0 0 1px rgba(255, 122, 26, 0.5), 0 0 22px rgba(255, 122, 26, 0.24);
      transform: translateY(-1px);
    }

    .btn--ghost {
      background: rgba(255, 255, 255, 0.02);
      color: #DFF7ED;
      border-color: rgba(41, 242, 177, 0.45);
    }

    .btn--ghost:hover {
      border-color: var(--green);
      box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.2), 0 0 18px rgba(41, 242, 177, 0.14);
    }

    .btn--light {
      background: #F0F5F3;
      color: #0A0E12;
      border-color: #F0F5F3;
    }

    .btn--sm {
      padding: 8px 16px;
      font-size: 14px;
    }

    .btn--block {
      width: 100%;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 14, 18, 0.84);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line);
    }

    .site-header.is-scrolled {
      background: rgba(10, 14, 18, 0.94);
    }

    .header-inner {
      min-height: 64px;
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .site-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 17px;
      font-weight: 800;
      color: var(--text);
      letter-spacing: -0.01em;
      white-space: nowrap;
      padding: 8px 0;
    }

    .site-logo .brand-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 4px rgba(41, 242, 177, 0.14), 0 0 16px rgba(41, 242, 177, 0.5);
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 26px;
      margin-left: auto;
    }

    .site-nav__list {
      display: flex;
      align-items: center;
      gap: 26px;
    }

    .site-nav__link {
      position: relative;
      display: inline-flex;
      align-items: center;
      color: var(--muted);
      font-size: 14px;
      font-weight: 500;
      padding: 20px 2px;
      transition: color 0.22s ease;
    }

    .site-nav__link::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 12px;
      width: 0;
      height: 2px;
      background: var(--green);
      transform: translateX(-50%);
      border-radius: 99px;
      box-shadow: 0 0 10px var(--green);
      transition: width 0.22s ease;
    }

    .site-nav__link:hover {
      color: #fff;
    }

    .site-nav__link:hover::after {
      width: 100%;
    }

    .site-nav__link.is-active {
      color: #fff;
    }

    .site-nav__link.is-active::after {
      width: 100%;
    }

    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 10px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      transition: border-color 0.2s ease, background 0.2s ease;
    }

    .nav-toggle .bar {
      width: 18px;
      height: 1.5px;
      background: var(--text);
      border-radius: 4px;
      transition: transform 0.22s ease, opacity 0.22s ease;
    }

    .nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
      transform: translateY(6.5px) rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
      opacity: 0;
    }

    .nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
      transform: translateY(-6.5px) rotate(-45deg);
    }

    .page-hero {
      position: relative;
      padding: 76px 0 70px;
      overflow: hidden;
    }

    .security-hero {
      background:
        linear-gradient(135deg, rgba(138, 124, 255, 0.12), transparent 34%),
        linear-gradient(180deg, rgba(10, 14, 18, 0.72) 0%, rgba(10, 14, 18, 0.82) 48%, var(--bg) 98%),
        url("/assets/images/backpic/back-1.webp") center top / cover no-repeat;
    }

    .security-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image: linear-gradient(90deg, transparent 95%, rgba(255, 255, 255, 0.03) 96%);
      background-size: 18px 18px;
      pointer-events: none;
      opacity: 0.6;
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      max-width: 920px;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      font-weight: 500;
      color: #D9FFF2;
      padding: 6px 14px;
      border: 1px solid rgba(41, 242, 177, 0.2);
      border-radius: 999px;
      background: rgba(10, 14, 18, 0.55);
    }

    .hero-kicker .dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 10px var(--green);
    }

    .page-hero h1 {
      margin-top: 22px;
      font-size: clamp(31px, 5vw, 48px);
      line-height: 1.2;
      letter-spacing: -0.035em;
      max-width: 800px;
    }

    .hero-sub {
      margin-top: 18px;
      max-width: 690px;
      color: #C6D2D4;
      font-size: 16px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 34px;
    }

    .hero-tags {
      margin-top: 28px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-tag {
      font-size: 12px;
      color: var(--muted);
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.025);
      padding: 6px 12px;
      border-radius: 999px;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .compare-card {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.04), rgba(17, 24, 32, 0.98));
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      padding: 28px;
      box-shadow: var(--shadow-card);
    }

    .compare-card--good {
      border-color: rgba(41, 242, 177, 0.2);
    }

    .compare-card--danger {
      border-color: rgba(255, 77, 109, 0.18);
    }

    .compare-card__head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .compare-card__head .head-ico {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .compare-card--good .head-ico {
      background: var(--green-soft);
      color: var(--green);
      box-shadow: 0 0 18px rgba(41, 242, 177, 0.1);
    }

    .compare-card--danger .head-ico {
      background: var(--danger-soft);
      color: var(--danger);
    }

    .compare-card__head h3 {
      font-size: 18px;
      font-weight: 700;
    }

    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 13px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .check-list li:first-child {
      border-top: 0;
    }

    .check-ico {
      width: 22px;
      height: 22px;
      margin-top: 3px;
      border-radius: 50%;
      flex-shrink: 0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .compare-card--good .check-ico {
      background: var(--green-soft);
      color: var(--green);
    }

    .compare-card--danger .check-ico {
      background: rgba(255, 77, 109, 0.12);
      color: var(--danger);
    }

    .check-list strong {
      display: block;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 2px;
    }

    .check-list span {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .warn-panel {
      margin-top: 28px;
      display: grid;
      grid-template-columns: 56px 1fr;
      gap: 20px;
      padding: 28px;
      border: 1px solid rgba(255, 122, 26, 0.28);
      border-left: 3px solid var(--orange);
      border-radius: var(--radius-xl);
      background: linear-gradient(140deg, rgba(255, 122, 26, 0.08), rgba(17, 24, 32, 0.9));
    }

    .warn-panel__ico {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--orange);
      background: var(--orange-soft);
    }

    .warn-panel h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .warn-panel p {
      color: #BCC8CB;
      max-width: 850px;
    }

    .warn-panel code {
      color: #FFB674;
      background: rgba(255, 122, 26, 0.08);
      padding: 2px 6px;
      border-radius: 6px;
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    }

    .selfcheck-panel {
      background: linear-gradient(140deg, rgba(138, 124, 255, 0.05), rgba(17, 24, 32, 0.95));
      border: 1px solid var(--line-strong);
      border-radius: var(--radius-xl);
      padding: 30px;
      box-shadow: var(--shadow-card);
    }

    .selfcheck-list {
      margin-top: 10px;
    }

    .check-option {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 13px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      cursor: pointer;
    }

    .check-option:first-child {
      border-top: 0;
    }

    .check-option input {
      position: absolute;
      opacity: 0;
      width: 1px;
      height: 1px;
    }

    .custom-check {
      width: 22px;
      height: 22px;
      border-radius: 7px;
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.02);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-top: 3px;
      flex-shrink: 0;
      transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
    }

    .check-option input:focus-visible + .custom-check {
      outline: 2px solid var(--green);
      outline-offset: 2px;
    }

    .check-option input:checked + .custom-check {
      background: var(--green);
      border-color: var(--green);
      box-shadow: 0 0 0 3px rgba(41, 242, 177, 0.14), 0 0 14px rgba(41, 242, 177, 0.3);
    }

    .custom-check svg {
      opacity: 0;
      transform: scale(0.6);
      transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .check-option input:checked + .custom-check svg {
      opacity: 1;
      transform: scale(1);
    }

    .check-content strong {
      display: block;
      font-size: 15px;
      font-weight: 600;
      line-height: 1.5;
    }

    .check-content small {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.6;
      display: block;
      margin-top: 2px;
    }

    .selfcheck-bar {
      padding-top: 18px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 8px;
    }

    .selfcheck-bar .btn {
      min-height: 46px;
    }

    .result-wrap {
      flex: 1;
      min-width: 260px;
    }

    .result-text {
      display: none;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      padding: 9px 13px;
      border-radius: 10px;
      line-height: 1.6;
    }

    .result-text.is-show {
      display: flex;
    }

    .result-text.is-success {
      background: rgba(41, 242, 177, 0.1);
      border: 1px solid rgba(41, 242, 177, 0.25);
      color: #A7FADC;
    }

    .result-text.is-warn {
      background: rgba(255, 122, 26, 0.1);
      border: 1px solid rgba(255, 122, 26, 0.25);
      color: #FFC37A;
    }

    .guide-media {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      align-items: center;
      gap: 52px;
    }

    .guide-media__body h2 {
      font-size: clamp(24px, 3vw, 32px);
      line-height: 1.28;
      margin-top: 12px;
    }

    .guide-media__body > p {
      color: var(--muted);
      margin-top: 12px;
      max-width: 540px;
    }

    .media-steps {
      margin-top: 26px;
    }

    .media-step {
      display: grid;
      grid-template-columns: 44px 1fr;
      gap: 14px;
      padding: 15px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.07);
    }

    .media-step:first-child {
      border-top: 0;
    }

    .media-step .step-no {
      font-size: 13px;
      font-weight: 700;
      font-variant-numeric: tabular-nums;
      color: var(--purple);
      background: var(--purple-soft);
      border-radius: 10px;
      width: 36px;
      height: 36px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .media-step strong {
      display: block;
      font-size: 16px;
      font-weight: 650;
      margin-bottom: 4px;
    }

    .media-step p {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .guide-visual {
      position: relative;
    }

    .guide-visual img {
      border-radius: 22px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 24px 55px rgba(0, 0, 0, 0.42);
    }

    .guide-visual::before {
      content: "";
      position: absolute;
      inset: auto -24px -24px auto;
      width: 70%;
      height: 40%;
      background: rgba(138, 124, 255, 0.13);
      filter: blur(70px);
      border-radius: 50%;
      z-index: 0;
    }

    .visual-note {
      position: absolute;
      left: 16px;
      bottom: 16px;
      right: 16px;
      z-index: 1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(10, 14, 18, 0.78);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 12px;
      padding: 10px 14px;
      color: var(--muted);
      font-size: 13px;
      backdrop-filter: blur(8px);
    }

    .visual-note strong {
      color: var(--green);
      font-weight: 600;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 18px;
    }

    details.faq-item {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 20px 22px;
      transition: border-color 0.22s ease, box-shadow 0.22s ease;
    }

    details.faq-item[open] {
      border-color: rgba(41, 242, 177, 0.32);
      box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.08), 0 14px 40px rgba(0, 0, 0, 0.2);
    }

    details.faq-item summary {
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      line-height: 1.6;
      display: flex;
      gap: 10px;
      align-items: baseline;
      position: relative;
      list-style: none;
    }

    details.faq-item summary::-webkit-details-marker {
      display: none;
    }

    details.faq-item summary::after {
      content: "+";
      margin-left: auto;
      font-size: 22px;
      color: var(--dim);
      transition: transform 0.22s ease, color 0.22s ease;
      line-height: 1;
    }

    details.faq-item[open] summary::after {
      content: "−";
      color: var(--green);
    }

    details.faq-item .faq-answer {
      margin-top: 10px;
      padding-top: 14px;
      border-top: 1px dashed rgba(255, 255, 255, 0.08);
      color: var(--muted);
      line-height: 1.8;
      font-size: 14px;
    }

    .cta-area {
      padding: 0 0 var(--gap-section);
    }

    .cta-panel {
      position: relative;
      border-radius: var(--radius-xl);
      padding: 44px 44px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 26px;
      background:
        linear-gradient(90deg, rgba(10, 14, 18, 0.9), rgba(10, 14, 18, 0.55)),
        url("/assets/images/backpic/back-3.png") center / cover no-repeat;
      border: 1px solid rgba(41, 242, 177, 0.2);
      overflow: hidden;
    }

    .cta-panel::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 3px;
      background: var(--green);
      box-shadow: 0 0 18px rgba(41, 242, 177, 0.6);
    }

    .cta-panel h2 {
      font-size: clamp(22px, 3vw, 31px);
      line-height: 1.3;
      letter-spacing: -0.015em;
      max-width: 620px;
    }

    .cta-panel p {
      color: var(--muted);
      max-width: 600px;
      margin-top: 10px;
    }

    .cta-panel__actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .cta-panel .mono-badge {
      font-size: 13px;
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
      color: #C4FCE5;
      background: rgba(41, 242, 177, 0.08);
      border: 1px solid rgba(41, 242, 177, 0.22);
      padding: 6px 12px;
      border-radius: 999px;
    }

    .site-footer {
      background: #070A0D;
      border-top: 1px solid rgba(41, 242, 177, 0.14);
      padding: 64px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.9fr 1.1fr 1.3fr 1.6fr;
      gap: 36px;
    }

    .footer-brand__logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 17px;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 14px;
    }

    .footer-brand__logo .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 4px rgba(41, 242, 177, 0.12), 0 0 14px rgba(41, 242, 177, 0.3);
    }

    .footer-brand__desc {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
      max-width: 340px;
    }

    .footer-title {
      color: #DCE6E3;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.04em;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a,
    .footer-links span {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.5;
      transition: color 0.22s ease;
      cursor: default;
    }

    .footer-links a {
      cursor: pointer;
    }

    .footer-links a:hover {
      color: var(--green);
    }

    .footer-note {
      margin-top: 44px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--dim);
      font-size: 13px;
    }

    .mono {
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
      letter-spacing: 0.02em;
    }

    @media (max-width: 980px) {
      :root {
        --gap-section: 64px;
      }

      .header-inner {
        flex-wrap: wrap;
      }

      .site-logo {
        font-size: 15px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
      }
    }

    @media (max-width: 840px) {
      .site-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        background: rgba(10, 14, 18, 0.98);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 28px 24px 40px;
        gap: 18px;
        margin-left: 0;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-6px);
        transition: opacity 0.22s ease, transform 0.22s ease;
        z-index: 999;
        border-top: 1px solid rgba(41, 242, 177, 0.16);
      }

      .site-nav.is-open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
      }

      .site-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
      }

      .site-nav__link {
        width: 100%;
        justify-content: space-between;
        padding: 14px 2px;
        color: var(--muted);
        border-top: 1px solid rgba(255, 255, 255, 0.05);
      }

      .site-nav__link.is-active {
        color: #fff;
      }

      .site-nav__link::after {
        display: none;
      }

      .header-cta {
        margin-top: 8px;
      }

      .header-cta .btn {
        width: 100%;
        min-height: 48px;
      }

      .nav-toggle {
        display: inline-flex;
        margin-left: auto;
        flex-shrink: 0;
      }

      .page-hero {
        padding: 64px 0 56px;
      }

      .compare-grid,
      .guide-media {
        grid-template-columns: 1fr;
      }

      .guide-visual {
        order: -1;
      }

      .compare-card,
      .selfcheck-panel,
      .warn-panel {
        padding: 22px;
      }

      .cta-panel {
        padding: 32px 26px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      body {
        font-size: 14px;
      }

      .container {
        width: min(100% - 24px, 480px);
      }

      :root {
        --gap-section: 54px;
      }

      .site-logo {
        font-size: 14px;
        letter-spacing: -0.02em;
      }

      .site-logo .brand-dot {
        width: 7px;
        height: 7px;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .page-hero h1 {
        font-size: 31px;
      }

      .hero-sub {
        font-size: 15px;
      }

      .warn-panel {
        grid-template-columns: 1fr;
        gap: 12px;
      }

      .warn-panel__ico {
        width: 42px;
        height: 42px;
      }

      .media-step {
        grid-template-columns: 36px 1fr;
        gap: 10px;
      }

      .media-step .step-no {
        width: 32px;
        height: 32px;
        font-size: 12px;
      }

      .cta-panel h2 {
        font-size: 23px;
      }

      .cta-panel__actions {
        width: 100%;
      }

      .cta-panel__actions .btn {
        width: 100%;
      }

      .footer-note {
        flex-direction: column;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
    }

/* roulang page: category4 */
:root {
  --bg: #0A0E12;
  --bg-2: #111820;
  --bg-3: #17202A;
  --panel: rgba(255, 255, 255, 0.04);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --green: #29F2B1;
  --orange: #FF7A1A;
  --orange-2: #FF983D;
  --violet: #8A7CFF;
  --pink: #FF4D6D;
  --text: #F0F5F3;
  --muted: #A7B2B8;
  --weak: #6B7A80;
  --radius-lg: 20px;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow-green: 0 0 0 1px rgba(41, 242, 177, 0.28), 0 0 24px rgba(41, 242, 177, 0.12);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

::selection { background: rgba(41, 242, 177, 0.25); color: #fff; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; border-radius: 4px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 22px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out, background 0.2s ease-out, transform 0.2s ease-out;
}
.btn--primary {
  background: var(--orange);
  color: #0B0B0B;
  box-shadow: 0 6px 18px -8px rgba(255, 122, 26, 0.7);
}
.btn--primary:hover { background: #FF8A35; box-shadow: 0 0 0 1px rgba(255, 120, 20, 0.4), 0 8px 24px -10px rgba(255, 122, 26, 0.8); }
.btn--ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.12), 0 0 18px rgba(41, 242, 177, 0.08);
}
.btn--sm { padding: 9px 16px; font-size: 14px; font-weight: 600; }
.btn--md { padding: 12px 18px; font-size: 14px; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(10, 14, 18, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--text);
  flex: 0 0 auto;
}
.site-logo .logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px rgba(41, 242, 177, 0.85);
}
.site-logo .logo-dot--or {
  background: var(--orange);
  box-shadow: 0 0 16px rgba(255, 122, 26, 0.7);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 13px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  border-radius: var(--radius-xs);
  transition: color 0.22s ease;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  height: 2px;
  width: 0;
  border-radius: 2px;
  background: var(--green);
  box-shadow: 0 0 12px rgba(41, 242, 177, 0.6);
  transform: translateX(-50%);
  transition: width 0.22s ease-out;
}
.site-nav__link:hover {
  color: var(--text);
}
.site-nav__link:hover::after {
  width: 18px;
}
.site-nav__link.is-active {
  color: var(--text);
}
.site-nav__link.is-active::after {
  width: 24px;
  background: var(--green);
  box-shadow: 0 0 16px rgba(41, 242, 177, 0.9);
}
.header-cta {
  display: flex;
  align-items: center;
  padding-left: 12px;
}
.header-cta .btn {
  box-shadow: 0 0 0 1px rgba(255, 122, 26, 0.2), 0 0 18px -4px rgba(255, 122, 26, 0.55);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: transparent;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.page-hero {
  position: relative;
  padding: 176px 0 104px;
  background: linear-gradient(0deg, rgba(10, 14, 18, 0.92) 0%, rgba(10, 14, 18, 0.72) 45%, rgba(10, 14, 18, 0.62) 100%), linear-gradient(110deg, rgba(255, 122, 26, 0.08) 0%, rgba(41, 242, 177, 0.02) 48%, transparent 78%), url("/assets/images/backpic/back-2.webp") center center / cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.page-hero__grid {
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border: 1px solid rgba(41, 242, 177, 0.25);
  border-radius: 999px;
  color: var(--green);
  background: rgba(41, 242, 177, 0.06);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 18px;
}
.hero-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
}
.page-hero h1 {
  margin: 0 0 20px;
  max-width: 820px;
  font-size: clamp(34px, 5vw, 50px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #fff;
}
.page-hero h1 .accent {
  color: var(--green);
}
.hero-lead {
  max-width: 700px;
  margin: 0 0 30px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--muted);
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 8px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 32px;
  color: var(--weak);
  font-size: 13px;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta i { width: 5px; height: 5px; border-radius: 50%; background: var(--orange); display: inline-block; }

.quick-stat {
  position: relative;
  z-index: 2;
  margin-top: -42px;
}
.quick-stat .stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 36px -12px rgba(0, 0, 0, 0.6);
}
.stat-card {
  background: #111820;
  padding: 24px 20px;
  text-align: center;
}
.stat-card strong {
  display: block;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--green);
  letter-spacing: -0.02em;
}
.stat-card strong.orange { color: var(--orange); }
.stat-card strong.violet { color: var(--violet); }
.stat-card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.section {
  padding: 84px 0;
}
.section--tight { padding: 60px 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
}
.section-head__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.section-head__label::before {
  content: "";
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--green);
  box-shadow: 0 0 12px rgba(41, 242, 177, 0.6);
}
.section-head h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--text);
}
.section-head p {
  max-width: 520px;
  margin: 8px 0 0;
  color: var(--weak);
  font-size: 14px;
  line-height: 1.8;
}
.section-more {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 14px;
  transition: color 0.2s ease;
}
.section-more:hover { color: var(--green); }

.anchor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.faq-anchor-card {
  position: relative;
  min-height: 188px;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.09);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  color: #fff;
  background-position: center;
  background-size: cover;
  isolation: isolate;
  transition: border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}
.faq-anchor-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(10, 14, 18, 0.86) 8%, rgba(10, 14, 18, 0.28) 56%, rgba(10, 14, 18, 0.12) 100%);
  z-index: -1;
}
.faq-anchor-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  border-radius: inherit;
  z-index: 1;
  pointer-events: none;
  transition: border-color 0.22s ease;
}
.faq-anchor-card:hover {
  border-color: rgba(41, 242, 177, 0.6);
  transform: translateY(-3px);
  box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.14), 0 18px 36px -18px rgba(0, 0, 0, 0.7);
}
.faq-anchor-card__index {
  position: absolute;
  top: 18px;
  left: 20px;
  display: inline-flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.8);
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
}
.faq-anchor-card h3 {
  position: relative;
  z-index: 2;
  margin: 0 0 6px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
}
.faq-anchor-card span {
  position: relative;
  z-index: 2;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.7;
}
.faq-anchor-card .anchor-arrow {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 2;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}
.faq-anchor-card:hover .anchor-arrow {
  border-color: var(--green);
  color: var(--green);
  background: rgba(41, 242, 177, 0.08);
}

.faq-wrap {
  display: flex;
  flex-direction: column;
  gap: 72px;
}
.faq-group {
  scroll-margin-top: 110px;
}
.faq-group__head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}
.faq-group__head .big-num {
  color: rgba(138, 124, 255, 0.4);
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 48px;
  font-weight: 500;
  line-height: 1;
}
.faq-group__head .group-title {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  padding-left: 18px;
}
.faq-group__head h2 {
  margin: 0;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.3;
}
.faq-group__head p {
  margin: 4px 0 0;
  color: var(--weak);
  font-size: 13px;
}
.faq-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  align-items: start;
}
.faq-item {
  background: var(--bg-2);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.22s ease, background 0.22s ease;
}
.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.14);
}
.faq-item[open] {
  border-color: rgba(41, 242, 177, 0.34);
  background: #121A22;
  box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.03);
}
.faq-item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 20px 22px;
  padding-right: 54px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  transition: color 0.2s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .q-icon {
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(41, 242, 177, 0.1);
  border: 1px solid rgba(41, 242, 177, 0.14);
  color: var(--green);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  margin-top: 3px;
}
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 18px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  color: var(--muted);
  font-size: 18px;
  font-weight: 300;
  transition: transform 0.22s ease, border-color 0.22s ease, color 0.22s ease;
}
.faq-item[open] summary::after {
  content: "−";
  border-color: rgba(41, 242, 177, 0.6);
  color: var(--green);
  transform: rotate(180deg);
}
.faq-item[open] summary {
  color: var(--green);
}
.faq-item__body {
  padding: 0 24px 22px 60px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.help-section {
  background: linear-gradient(180deg, var(--bg) 0%, #0C1218 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.help-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  background: var(--bg-2);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 42px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 50px -30px rgba(0, 0, 0, 0.8);
}
.help-card__media {
  position: relative;
  min-height: 260px;
  border-radius: var(--radius);
  overflow: hidden;
}
.help-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.help-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: inherit;
}
.help-card h2 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.4;
}
.help-card p {
  color: var(--muted);
  margin: 0 0 18px;
  line-height: 1.85;
}
.help-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}
.form-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.form-input {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}
.form-input::placeholder { color: var(--weak); }
.form-input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 1px rgba(41, 242, 177, 0.25), 0 0 20px -4px rgba(41, 242, 177, 0.45);
}
textarea.form-input { resize: vertical; min-height: 110px; }
.form-tip {
  color: var(--weak);
  font-size: 12px;
  line-height: 1.7;
  margin-top: -4px;
}
.form-success {
  display: none;
  margin-top: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(41, 242, 177, 0.28);
  border-radius: var(--radius-xs);
  color: var(--green);
  background: rgba(41, 242, 177, 0.06);
  font-size: 13px;
}
.form-success.is-visible { display: block; }

.final-cta {
  position: relative;
  text-align: center;
  padding: 84px 0;
  background: linear-gradient(180deg, rgba(10, 14, 18, 0.6) 0%, rgba(10, 14, 18, 0.96) 100%), url("/assets/images/backpic/back-3.png") center center / cover no-repeat;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.final-cta h2 {
  margin: 0 auto 12px;
  max-width: 680px;
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.4;
  font-weight: 800;
}
.final-cta p {
  max-width: 520px;
  margin: 0 auto 26px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}
.final-cta .btns {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.site-footer {
  background: #070A0E;
  border-top: 1px solid rgba(41, 242, 177, 0.12);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 36px;
  padding-bottom: 42px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-brand__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 17px;
  color: var(--text);
  line-height: 1.4;
}
.footer-brand__logo .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 14px var(--green);
}
.footer-brand__desc {
  margin: 16px 0 0;
  max-width: 320px;
  color: var(--weak);
  font-size: 13px;
  line-height: 1.85;
}
.footer-title {
  margin: 0 0 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.footer-links a,
.footer-links span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--green);
}
.footer-note {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 28px;
  color: var(--weak);
  font-size: 12px;
}
.mono {
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  letter-spacing: 0.03em;
}

@media (max-width: 1100px) {
  .anchor-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }
  .site-logo { font-size: 15px; }
  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin: 0;
    padding: 18px 24px 22px;
    background: rgba(10, 14, 18, 0.97);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  body.nav-open .site-nav {
    display: flex;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .site-nav__link {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 15px;
  }
  .site-nav__link::after { display: none; }
  .site-nav__link.is-active {
    background: rgba(41, 242, 177, 0.08);
    color: var(--green);
    border-left: 3px solid var(--green);
    padding-left: 11px;
  }
  .header-cta {
    padding: 10px 12px 0;
    border-top: 1px solid var(--line);
    margin-top: 6px;
  }
  .header-cta .btn { width: 100%; }
}

@media (max-width: 768px) {
  .page-hero {
    padding: 146px 0 80px;
  }
  .hero-lead { font-size: 16px; }
  .quick-stat { margin-top: -30px; }
  .quick-stat .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 60px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .section-head h2 { font-size: 26px; }
  .faq-panel { grid-template-columns: 1fr; }
  .help-card { grid-template-columns: 1fr; padding: 26px; }
  .help-card__media { min-height: 190px; }
  .faq-group__head { gap: 12px; }
  .faq-group__head .big-num { font-size: 36px; }
  .faq-group__head h2 { font-size: 21px; }
  .faq-item summary { font-size: 15px; }
  .faq-item__body { padding-left: 22px; }
}

@media (max-width: 560px) {
  .anchor-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .final-cta .btns .btn { width: 100%; }
  .site-logo .logo-tail { display: inline; }
  .site-logo { letter-spacing: -0.01em; }
  .footer-note { flex-direction: column; }
  .page-hero h1 { font-size: 32px; }
  .hero-ctas .btn { width: 100%; }
  .faq-group__head { align-items: flex-start; flex-direction: column; gap: 6px; }
  .faq-group__head .group-title { border-left: 0; padding-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}