/* roulang page: index */
:root {
      --color-primary: #45152f;
      --color-primary-strong: #2b0d20;
      --color-primary-soft: #6f284c;
      --color-accent: #c46d5c;
      --color-accent-strong: #a85245;
      --color-champagne: #f4e1c8;
      --color-champagne-soft: #fff7ec;
      --color-bg: #fffaf4;
      --color-bg-alt: #f7edf0;
      --color-ink: #21151c;
      --color-muted: #6f5b66;
      --color-light: #fffdf8;
      --color-dark: #1b1118;
      --color-border: rgba(95, 54, 73, .15);
      --color-border-strong: rgba(196, 109, 92, .42);
      --shadow-soft: 0 18px 48px rgba(69, 21, 47, .12);
      --shadow-card: 0 16px 38px rgba(69, 21, 47, .09);
      --shadow-hover: 0 22px 58px rgba(69, 21, 47, .17);
      --radius-sm: 14px;
      --radius-md: 22px;
      --radius-lg: 30px;
      --radius-pill: 999px;
      --container: 1200px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
      --transition: 220ms ease;
      --section-y: 92px;
    }

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

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      min-width: 320px;
      font-family: var(--font-sans);
      color: var(--color-ink);
      background:
        radial-gradient(circle at 10% 8%, rgba(244, 225, 200, .82), transparent 32%),
        radial-gradient(circle at 90% 22%, rgba(196, 109, 92, .13), transparent 26%),
        linear-gradient(180deg, #fffaf4 0%, #fff7ef 42%, #f8eef1 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), transform var(--transition), border-color var(--transition), background var(--transition);
    }

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

    button,
    input,
    textarea {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    input,
    textarea {
      width: 100%;
      border: 1px solid var(--color-border);
      border-radius: 16px;
      background: rgba(255, 253, 248, .9);
      color: var(--color-ink);
      outline: none;
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    input:focus,
    textarea:focus {
      border-color: var(--color-primary-soft);
      box-shadow: 0 0 0 4px rgba(111, 40, 76, .12);
      background: #fff;
    }

    textarea {
      min-height: 118px;
      resize: vertical;
    }

    ::selection {
      background: rgba(196, 109, 92, .26);
      color: var(--color-primary-strong);
    }

    .container {
      width: min(100% - 48px, var(--container));
      margin-inline: auto;
    }

    .skip-link {
      position: fixed;
      left: 18px;
      top: 12px;
      z-index: 1000;
      padding: 10px 14px;
      border-radius: var(--radius-pill);
      background: var(--color-primary);
      color: var(--color-light);
      transform: translateY(-140%);
      transition: transform var(--transition);
    }

    .skip-link:focus {
      transform: translateY(0);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid rgba(255, 255, 255, .16);
      background: rgba(31, 17, 27, .78);
      backdrop-filter: blur(18px);
      box-shadow: 0 8px 30px rgba(27, 17, 24, .12);
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 76px;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      color: #fff8ee;
      font-weight: 800;
      letter-spacing: -.02em;
    }

    .brand-mark {
      position: relative;
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--color-champagne), var(--color-accent));
      box-shadow: 0 10px 28px rgba(196, 109, 92, .28);
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 10px;
      border: 2px solid rgba(69, 21, 47, .58);
      border-radius: 12px;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      right: 8px;
      top: 8px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-primary);
    }

    .brand-text {
      overflow: hidden;
      max-width: 310px;
      text-overflow: ellipsis;
      white-space: nowrap;
      font-size: 18px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
    }

    .nav-links a {
      position: relative;
      display: inline-flex;
      align-items: center;
      padding: 10px 14px;
      border-radius: var(--radius-pill);
      color: rgba(255, 248, 238, .82);
      font-size: 15px;
      font-weight: 650;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 7px;
      height: 2px;
      border-radius: 2px;
      background: var(--color-accent);
      opacity: 0;
      transform: scaleX(.35);
      transition: opacity var(--transition), transform var(--transition);
    }

    .nav-links a:hover,
    .nav-links a:focus,
    .nav-links a.active {
      color: #fff;
      background: rgba(255, 255, 255, .08);
    }

    .nav-links a:hover::after,
    .nav-links a:focus::after,
    .nav-links a.active::after {
      opacity: 1;
      transform: scaleX(1);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .age-badge,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      width: fit-content;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 750;
      line-height: 1;
      white-space: nowrap;
    }

    .age-badge {
      padding: 9px 12px;
      border: 1px solid rgba(244, 225, 200, .28);
      background: rgba(244, 225, 200, .12);
      color: var(--color-champagne);
    }

    .age-badge::before,
    .badge-dot::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: currentColor;
      box-shadow: 0 0 0 4px rgba(196, 109, 92, .16);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 15px;
      background: rgba(255, 255, 255, .1);
      color: #fff7ee;
    }

    .menu-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      margin: 5px auto;
      border-radius: 2px;
      background: currentColor;
      transition: transform var(--transition), opacity var(--transition);
    }

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

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: var(--radius-pill);
      font-weight: 750;
      line-height: 1;
      border: 1px solid transparent;
      transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
      user-select: none;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--color-primary), var(--color-primary-soft));
      color: #fffaf1;
      box-shadow: 0 12px 28px rgba(69, 21, 47, .2);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      transform: translateY(-2px);
      background: linear-gradient(135deg, var(--color-primary-strong), var(--color-primary));
      box-shadow: 0 18px 38px rgba(69, 21, 47, .28);
    }

    .btn-secondary {
      color: var(--color-primary);
      border-color: rgba(69, 21, 47, .28);
      background: rgba(255, 250, 244, .72);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
      transform: translateY(-2px);
      border-color: rgba(196, 109, 92, .55);
      background: rgba(244, 225, 200, .55);
      color: var(--color-primary-strong);
    }

    .btn-ghost {
      min-height: 40px;
      padding: 10px 0;
      color: var(--color-primary);
      font-weight: 800;
    }

    .btn-ghost .arrow,
    .text-link .arrow {
      transition: transform var(--transition);
    }

    .btn-ghost:hover,
    .text-link:hover {
      color: var(--color-accent-strong);
    }

    .btn-ghost:hover .arrow,
    .text-link:hover .arrow {
      transform: translateX(4px);
    }

    .btn:active,
    .card:active {
      transform: translateY(0);
    }

    .btn:disabled {
      cursor: not-allowed;
      opacity: .55;
      transform: none;
      box-shadow: none;
    }

    .hero {
      position: relative;
      isolation: isolate;
      padding: 74px 0 42px;
      color: #fff8ee;
      background:
        linear-gradient(115deg, rgba(27, 17, 24, .96) 0%, rgba(69, 21, 47, .89) 48%, rgba(27, 17, 24, .82) 100%),
        url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: auto -8% -38% 42%;
      height: 420px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(196, 109, 92, .32), transparent 68%);
      filter: blur(18px);
      z-index: -1;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(360px, .88fr);
      align-items: center;
      gap: 56px;
    }

    .eyebrow {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      margin-bottom: 22px;
    }

    .badge {
      padding: 9px 12px;
      color: var(--color-primary);
      background: var(--color-champagne);
      border: 1px solid rgba(255, 255, 255, .28);
    }

    .badge.dark {
      color: var(--color-champagne);
      background: rgba(27, 17, 24, .55);
      border-color: rgba(244, 225, 200, .22);
    }

    .hero h1 {
      max-width: 760px;
      font-size: clamp(32px, 5vw, 56px);
      line-height: 1.16;
      letter-spacing: -.045em;
      font-weight: 850;
    }

    .hero h1 .highlight {
      color: var(--color-champagne);
      text-shadow: 0 12px 34px rgba(244, 225, 200, .2);
    }

    .hero-lead {
      max-width: 680px;
      margin-top: 22px;
      color: rgba(255, 248, 238, .84);
      font-size: 18px;
      line-height: 1.9;
    }

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

    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
      color: rgba(255, 248, 238, .72);
      font-size: 14px;
    }

    .hero-note span {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .hero-note span::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--color-accent);
    }

    .visual-board {
      position: relative;
      min-height: 520px;
    }

    .visual-frame {
      position: absolute;
      inset: 22px 0 0 34px;
      overflow: hidden;
      border: 1px solid rgba(244, 225, 200, .24);
      border-radius: 34px;
      background: rgba(255, 255, 255, .06);
      box-shadow: 0 28px 90px rgba(0, 0, 0, .32);
      backdrop-filter: blur(8px);
    }

    .visual-frame img {
      width: 100%;
      height: 100%;
      min-height: 498px;
      object-fit: cover;
      filter: saturate(.9) contrast(.95);
      opacity: .86;
    }

    .visual-frame::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(27, 17, 24, .08), rgba(27, 17, 24, .58)),
        radial-gradient(circle at 18% 12%, rgba(244, 225, 200, .24), transparent 34%);
    }

    .floating-panel {
      position: absolute;
      left: 0;
      bottom: 34px;
      width: min(330px, 82%);
      padding: 22px;
      border: 1px solid rgba(244, 225, 200, .22);
      border-radius: 26px;
      background: rgba(255, 250, 244, .92);
      color: var(--color-ink);
      box-shadow: var(--shadow-soft);
    }

    .floating-panel strong {
      display: block;
      margin: 12px 0 8px;
      color: var(--color-primary);
      font-size: 20px;
      line-height: 1.35;
    }

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

    .mini-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 16px;
    }

    .mini-metrics span {
      padding: 10px 8px;
      border-radius: 15px;
      background: rgba(244, 225, 200, .55);
      color: var(--color-primary);
      font-size: 12px;
      font-weight: 800;
      text-align: center;
    }

    main {
      position: relative;
    }

    .section {
      padding: var(--section-y) 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 34px;
    }

    .section-kicker {
      margin-bottom: 10px;
      color: var(--color-accent-strong);
      font-size: 14px;
      font-weight: 850;
    }

    .section-title {
      max-width: 760px;
      color: var(--color-primary-strong);
      font-size: clamp(28px, 3vw, 38px);
      line-height: 1.28;
      letter-spacing: -.025em;
      font-weight: 850;
    }

    .section-desc {
      max-width: 570px;
      margin-top: 12px;
      color: var(--color-muted);
      font-size: 16px;
      line-height: 1.85;
    }

    .trust-strip {
      margin-top: -1px;
      padding: 28px 0;
      background: rgba(255, 250, 244, .86);
      border-bottom: 1px solid var(--color-border);
    }

    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .trust-item {
      display: flex;
      gap: 13px;
      min-height: 92px;
      padding: 18px;
      border: 1px solid var(--color-border);
      border-radius: 22px;
      background: rgba(255, 253, 248, .75);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .trust-item:hover {
      transform: translateY(-3px);
      border-color: var(--color-border-strong);
      box-shadow: var(--shadow-card);
    }

    .icon-dot {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      flex: 0 0 34px;
      border-radius: 13px;
      background: var(--color-primary);
      color: var(--color-champagne);
      font-weight: 900;
    }

    .trust-item h3 {
      color: var(--color-primary);
      font-size: 17px;
      line-height: 1.35;
    }

    .trust-item p {
      margin-top: 4px;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .feature-layout {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      grid-template-rows: auto auto;
      gap: 22px;
    }

    .card {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      background: rgba(255, 253, 248, .82);
      box-shadow: var(--shadow-card);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .card:hover {
      transform: translateY(-4px);
      border-color: var(--color-border-strong);
      box-shadow: var(--shadow-hover);
    }

    .feature-large {
      grid-row: span 2;
      min-height: 520px;
      display: flex;
      flex-direction: column;
    }

    .feature-image {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 10;
      border-radius: 28px 28px 0 0;
      background: var(--color-bg-alt);
    }

    .feature-large .feature-image {
      aspect-ratio: 16 / 9;
    }

    .feature-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 520ms ease, filter 520ms ease;
    }

    .card:hover .feature-image img {
      transform: scale(1.035);
      filter: brightness(.92);
    }

    .feature-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 42%, rgba(27, 17, 24, .42));
      pointer-events: none;
    }

    .card-body {
      padding: 28px;
    }

    .card h3 {
      color: var(--color-primary);
      font-size: 23px;
      line-height: 1.35;
      letter-spacing: -.015em;
    }

    .card p {
      margin-top: 12px;
      color: var(--color-muted);
      font-size: 15px;
      line-height: 1.82;
    }

    .feature-small {
      min-height: 248px;
      padding: 28px;
    }

    .feature-small .badge {
      margin-bottom: 18px;
    }

    .feature-band {
      grid-column: 1 / -1;
      display: grid;
      grid-template-columns: 1fr auto;
      align-items: center;
      gap: 22px;
      padding: 28px 30px;
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, var(--color-primary), var(--color-dark));
      color: #fff8ee;
      box-shadow: var(--shadow-soft);
    }

    .feature-band h3 {
      font-size: 24px;
      line-height: 1.35;
    }

    .feature-band p {
      margin-top: 8px;
      color: rgba(255, 248, 238, .72);
    }

    .guide {
      background:
        linear-gradient(180deg, rgba(255, 250, 244, .24), rgba(247, 237, 240, .75)),
        url("/assets/images/backpic/back-2.jpg") center/cover fixed;
    }

    .guide-panel {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 28px;
      padding: 28px;
      border: 1px solid rgba(255, 255, 255, .52);
      border-radius: 34px;
      background: rgba(255, 250, 244, .86);
      box-shadow: var(--shadow-soft);
      backdrop-filter: blur(10px);
    }

    .guide-copy {
      padding: 14px 8px;
    }

    .guide-copy h2 {
      color: var(--color-primary-strong);
      font-size: clamp(28px, 3vw, 38px);
      line-height: 1.28;
    }

    .guide-copy p {
      margin-top: 16px;
      color: var(--color-muted);
      line-height: 1.9;
    }

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

    .guide-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 15px;
      border-radius: 20px;
      background: rgba(255, 253, 248, .74);
      border: 1px solid var(--color-border);
    }

    .guide-list b {
      color: var(--color-primary);
    }

    .guide-list span {
      color: var(--color-muted);
      font-size: 14px;
    }

    .preview-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .preview-card {
      position: relative;
      overflow: hidden;
      min-height: 220px;
      border-radius: 26px;
      background: var(--color-dark);
      box-shadow: 0 18px 40px rgba(27, 17, 24, .18);
    }

    .preview-card.tall {
      grid-row: span 2;
      min-height: 456px;
    }

    .preview-card img {
      width: 100%;
      height: 100%;
      min-height: inherit;
      object-fit: cover;
      opacity: .84;
      transition: transform 520ms ease, opacity 520ms ease;
    }

    .preview-card:hover img {
      transform: scale(1.04);
      opacity: .72;
    }

    .preview-label {
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 18px;
      padding: 14px 15px;
      border: 1px solid rgba(244, 225, 200, .2);
      border-radius: 18px;
      background: rgba(27, 17, 24, .58);
      color: #fff8ee;
      backdrop-filter: blur(10px);
    }

    .preview-label strong {
      display: block;
      font-size: 16px;
      line-height: 1.35;
    }

    .preview-label small {
      display: block;
      margin-top: 4px;
      color: rgba(255, 248, 238, .68);
    }

    .updates {
      background: linear-gradient(180deg, rgba(255, 250, 244, .5), rgba(255, 247, 239, .92));
    }

    .updates-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr);
      gap: 24px;
      align-items: stretch;
    }

    .update-feature {
      min-height: 100%;
    }

    .update-feature .feature-image {
      aspect-ratio: 16 / 10;
    }

    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      margin-bottom: 14px;
      color: var(--color-muted);
      font-size: 13px;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 10px;
      border-radius: var(--radius-pill);
      background: rgba(244, 225, 200, .68);
      color: var(--color-primary);
      font-size: 12px;
      font-weight: 800;
    }

    .update-list {
      display: grid;
      gap: 14px;
      list-style: none;
    }

    .update-item a {
      display: grid;
      grid-template-columns: 128px minmax(0, 1fr);
      gap: 16px;
      height: 100%;
      padding: 14px;
      border: 1px solid var(--color-border);
      border-radius: 24px;
      background: rgba(255, 253, 248, .82);
      box-shadow: 0 10px 26px rgba(69, 21, 47, .06);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
    }

    .update-item a:hover,
    .update-item a:focus {
      transform: translateY(-3px);
      border-color: var(--color-border-strong);
      background: #fffdf8;
      box-shadow: var(--shadow-card);
    }

    .thumb {
      overflow: hidden;
      border-radius: 18px;
      background: var(--color-bg-alt);
      aspect-ratio: 4 / 3;
    }

    .thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 520ms ease, filter 520ms ease;
    }

    .update-item a:hover .thumb img {
      transform: scale(1.05);
      filter: brightness(.9);
    }

    .update-item h3 {
      color: var(--color-primary);
      font-size: 18px;
      line-height: 1.42;
      transition: color var(--transition);
    }

    .update-item a:hover h3 {
      color: var(--color-accent-strong);
    }

    .update-item p {
      display: -webkit-box;
      margin-top: 7px;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.62;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .update-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 10px;
      color: var(--color-primary);
      font-size: 14px;
      font-weight: 850;
    }

    .update-more span {
      transition: transform var(--transition);
    }

    .update-item a:hover .update-more span {
      transform: translateX(4px);
    }

    .empty-state {
      display: grid;
      place-items: center;
      min-height: 260px;
      padding: 32px;
      border: 1px dashed rgba(111, 40, 76, .3);
      border-radius: var(--radius-lg);
      background: rgba(255, 253, 248, .78);
      color: var(--color-muted);
      font-weight: 750;
      text-align: center;
    }

    .steps-wrap {
      position: relative;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .step-card {
      position: relative;
      padding: 26px 22px;
      border: 1px solid var(--color-border);
      border-radius: 26px;
      background: rgba(255, 253, 248, .78);
      box-shadow: var(--shadow-card);
    }

    .step-card::after {
      content: "";
      position: absolute;
      top: 42px;
      right: -19px;
      width: 20px;
      height: 2px;
      background: rgba(196, 109, 92, .38);
    }

    .step-card:last-child::after {
      display: none;
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      margin-bottom: 18px;
      border-radius: 16px;
      background: var(--color-primary);
      color: var(--color-champagne);
      font-weight: 900;
      box-shadow: 0 12px 26px rgba(69, 21, 47, .18);
    }

    .step-card h3 {
      color: var(--color-primary);
      font-size: 19px;
      line-height: 1.4;
    }

    .step-card p {
      margin-top: 9px;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .standards {
      background: linear-gradient(135deg, rgba(69, 21, 47, .06), rgba(196, 109, 92, .08));
    }

    .standard-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 24px;
      align-items: stretch;
    }

    .standard-card {
      padding: 30px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
      background: rgba(255, 253, 248, .82);
      box-shadow: var(--shadow-card);
    }

    .standard-card.dark {
      color: #fff8ee;
      background:
        linear-gradient(135deg, rgba(43, 13, 32, .92), rgba(69, 21, 47, .86)),
        url("/assets/images/backpic/back-3.jpg") center/cover no-repeat;
      border-color: rgba(244, 225, 200, .18);
    }

    .standard-card h2,
    .standard-card h3 {
      color: var(--color-primary);
      font-size: 26px;
      line-height: 1.32;
    }

    .standard-card.dark h2,
    .standard-card.dark h3 {
      color: var(--color-champagne);
    }

    .standard-card p {
      margin-top: 14px;
      color: var(--color-muted);
    }

    .standard-card.dark p {
      color: rgba(255, 248, 238, .76);
    }

    .check-list {
      display: grid;
      gap: 12px;
      margin-top: 24px;
      list-style: none;
    }

    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      color: var(--color-muted);
    }

    .check-list li::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
      flex: 0 0 24px;
      border-radius: 50%;
      background: rgba(196, 109, 92, .15);
      color: var(--color-accent-strong);
      font-weight: 900;
    }

    .standard-card.dark .check-list li {
      color: rgba(255, 248, 238, .78);
    }

    .standard-card.dark .check-list li::before {
      background: rgba(244, 225, 200, .15);
      color: var(--color-champagne);
    }

    .feedback-layout {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 24px;
      align-items: start;
    }

    .notice-box {
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
      background: linear-gradient(180deg, rgba(244, 225, 200, .45), rgba(255, 253, 248, .78));
      box-shadow: var(--shadow-card);
    }

    .notice-box h2 {
      color: var(--color-primary-strong);
      font-size: 30px;
      line-height: 1.3;
    }

    .notice-box p {
      margin-top: 14px;
      color: var(--color-muted);
    }

    .notice-box .badge {
      margin-bottom: 18px;
    }

    .feedback-form {
      padding: 30px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      background: rgba(255, 253, 248, .88);
      box-shadow: var(--shadow-soft);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .form-field {
      display: grid;
      gap: 8px;
    }

    .form-field.full {
      grid-column: 1 / -1;
    }

    .form-field label {
      color: var(--color-primary);
      font-size: 14px;
      font-weight: 800;
    }

    .form-field input,
    .form-field textarea {
      padding: 13px 14px;
    }

    .form-hint {
      margin-top: 14px;
      color: var(--color-muted);
      font-size: 13px;
      line-height: 1.65;
    }

    .form-result {
      display: none;
      margin-top: 14px;
      padding: 12px 14px;
      border-radius: 16px;
      background: rgba(196, 109, 92, .12);
      color: var(--color-primary);
      font-weight: 750;
    }

    .form-result.is-visible {
      display: block;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 26px;
      align-items: start;
    }

    .faq-intro {
      position: sticky;
      top: 98px;
      padding: 30px;
      border-radius: var(--radius-lg);
      background: var(--color-primary);
      color: #fff8ee;
      box-shadow: var(--shadow-soft);
    }

    .faq-intro h2 {
      color: var(--color-champagne);
      font-size: 32px;
      line-height: 1.3;
    }

    .faq-intro p {
      margin-top: 14px;
      color: rgba(255, 248, 238, .76);
    }

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

    details.faq-item {
      border: 1px solid var(--color-border);
      border-radius: 22px;
      background: rgba(255, 253, 248, .86);
      box-shadow: 0 10px 28px rgba(69, 21, 47, .06);
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    details.faq-item[open] {
      border-color: var(--color-border-strong);
      background: #fffdf8;
      box-shadow: var(--shadow-card);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 20px 22px;
      color: var(--color-primary);
      font-size: 17px;
      font-weight: 850;
      cursor: pointer;
      list-style: none;
    }

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

    .faq-item summary::after {
      content: "⌄";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 30px;
      height: 30px;
      flex: 0 0 30px;
      border-radius: 50%;
      background: rgba(244, 225, 200, .68);
      color: var(--color-primary);
      transition: transform var(--transition), background var(--transition);
    }

    .faq-item[open] summary::after {
      transform: rotate(180deg);
      background: rgba(196, 109, 92, .18);
    }

    .faq-item p {
      padding: 0 22px 22px;
      color: var(--color-muted);
      line-height: 1.85;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 28px;
      padding: 42px;
      border-radius: 36px;
      background:
        radial-gradient(circle at 82% 22%, rgba(196, 109, 92, .34), transparent 30%),
        linear-gradient(135deg, var(--color-primary-strong), var(--color-primary) 62%, #1b1118);
      color: #fff8ee;
      box-shadow: 0 26px 72px rgba(43, 13, 32, .28);
    }

    .cta-panel::before {
      content: "";
      position: absolute;
      inset: -80px auto auto -80px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      border: 1px solid rgba(244, 225, 200, .18);
    }

    .cta-panel h2 {
      position: relative;
      max-width: 760px;
      color: var(--color-champagne);
      font-size: clamp(28px, 3vw, 40px);
      line-height: 1.25;
      letter-spacing: -.025em;
    }

    .cta-panel p {
      position: relative;
      max-width: 720px;
      margin-top: 12px;
      color: rgba(255, 248, 238, .76);
    }

    .cta-actions {
      position: relative;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .site-footer {
      padding: 58px 0 28px;
      background: #170f15;
      color: rgba(255, 248, 238, .74);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) repeat(3, minmax(150px, .32fr));
      gap: 34px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff8ee;
      font-size: 20px;
      font-weight: 850;
    }

    .footer-text {
      max-width: 560px;
      margin-top: 16px;
      color: rgba(255, 248, 238, .68);
      line-height: 1.85;
    }

    .footer-col h3 {
      margin-bottom: 14px;
      color: var(--color-champagne);
      font-size: 16px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
      list-style: none;
    }

    .footer-links a {
      color: rgba(255, 248, 238, .66);
      font-size: 14px;
    }

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

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-top: 42px;
      padding-top: 22px;
      border-top: 1px solid rgba(244, 225, 200, .12);
      color: rgba(255, 248, 238, .52);
      font-size: 13px;
    }

    .focus-ring:focus-visible,
    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(196, 109, 92, .46);
      outline-offset: 3px;
    }

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

      .container {
        width: min(100% - 36px, var(--container));
      }

      .hero-grid,
      .guide-panel,
      .standard-grid,
      .feedback-layout,
      .faq-grid {
        grid-template-columns: 1fr;
      }

      .visual-board {
        min-height: 470px;
      }

      .visual-frame {
        inset: 0 0 0 60px;
      }

      .trust-grid,
      .steps-wrap {
        grid-template-columns: repeat(2, 1fr);
      }

      .feature-layout,
      .updates-layout {
        grid-template-columns: 1fr;
      }

      .feature-large {
        min-height: auto;
      }

      .faq-intro {
        position: relative;
        top: auto;
      }

      .cta-panel {
        grid-template-columns: 1fr;
      }

      .cta-actions {
        justify-content: flex-start;
      }

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

      .step-card::after {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .nav-wrap {
        min-height: 68px;
      }

      .brand-text {
        max-width: 220px;
        font-size: 16px;
      }

      .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
      }

      .nav-links {
        position: absolute;
        left: 18px;
        right: 18px;
        top: calc(100% + 10px);
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px;
        border: 1px solid rgba(244, 225, 200, .16);
        border-radius: 24px;
        background: rgba(27, 17, 24, .96);
        box-shadow: 0 22px 60px rgba(0, 0, 0, .28);
      }

      .nav-links.is-open {
        display: flex;
      }

      .nav-links a {
        justify-content: center;
        padding: 13px;
      }

      .nav-actions .age-badge {
        display: none;
      }

      .nav-actions .btn {
        display: none;
      }

      .hero {
        padding: 52px 0 36px;
      }

      .hero-actions,
      .cta-actions {
        flex-direction: column;
      }

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

      .visual-board {
        min-height: 420px;
      }

      .visual-frame {
        inset: 0;
      }

      .visual-frame img {
        min-height: 420px;
      }

      .floating-panel {
        left: 16px;
        right: 16px;
        bottom: 18px;
        width: auto;
      }

      .section-head {
        display: block;
      }

      .trust-grid,
      .preview-grid,
      .steps-wrap,
      .form-grid {
        grid-template-columns: 1fr;
      }

      .preview-card.tall {
        min-height: 300px;
      }

      .preview-card {
        min-height: 260px;
      }

      .feature-band {
        grid-template-columns: 1fr;
      }

      .update-item a {
        grid-template-columns: 108px minmax(0, 1fr);
      }

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

    @media (max-width: 520px) {
      :root {
        --section-y: 58px;
      }

      .container {
        width: min(100% - 28px, var(--container));
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        flex-basis: 38px;
      }

      .brand-text {
        max-width: 170px;
      }

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

      .hero-lead {
        font-size: 16px;
      }

      .mini-metrics {
        grid-template-columns: 1fr;
      }

      .card-body,
      .feature-small,
      .standard-card,
      .notice-box,
      .feedback-form,
      .faq-intro {
        padding: 22px;
      }

      .guide-panel {
        padding: 18px;
        border-radius: 26px;
      }

      .update-item a {
        grid-template-columns: 1fr;
      }

      .thumb {
        aspect-ratio: 16 / 10;
      }

      .cta-panel {
        padding: 28px 22px;
        border-radius: 28px;
      }

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

/* roulang page: article */
:root {
      --color-primary: #45152f;
      --color-primary-strong: #2b0d20;
      --color-primary-soft: #6f284c;
      --color-accent: #c46d5c;
      --color-accent-strong: #a85245;
      --color-champagne: #f4e1c8;
      --color-champagne-soft: #fff7ec;
      --color-bg: #fffaf4;
      --color-bg-alt: #f7edf0;
      --color-ink: #21151c;
      --color-muted: #6f5b66;
      --color-light: #fffdf8;
      --color-dark: #1b1118;
      --color-border: rgba(95, 54, 73, .15);
      --color-border-strong: rgba(196, 109, 92, .42);
      --shadow-soft: 0 18px 48px rgba(69, 21, 47, .12);
      --shadow-card: 0 16px 38px rgba(69, 21, 47, .09);
      --shadow-hover: 0 22px 58px rgba(69, 21, 47, .17);
      --radius-sm: 14px;
      --radius-md: 22px;
      --radius-lg: 30px;
      --radius-pill: 999px;
      --container: 1200px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
      --transition: 220ms ease;
      --section-y: 92px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      min-width: 320px;
      margin: 0;
      font-family: var(--font-sans);
      color: var(--color-ink);
      background:
        radial-gradient(circle at 10% 8%, rgba(244, 225, 200, .82), transparent 32%),
        radial-gradient(circle at 90% 22%, rgba(196, 109, 92, .13), transparent 26%),
        linear-gradient(180deg, #fffaf4 0%, #fff7ef 42%, #f8eef1 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
    }

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

    button,
    input,
    textarea {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    input,
    textarea {
      width: 100%;
      border: 1px solid var(--color-border);
      border-radius: 16px;
      background: rgba(255, 253, 248, .9);
      color: var(--color-ink);
      outline: none;
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    input:focus,
    textarea:focus {
      border-color: var(--color-primary-soft);
      box-shadow: 0 0 0 4px rgba(111, 40, 76, .12);
      background: #fff;
    }

    textarea {
      min-height: 118px;
      resize: vertical;
    }

    .container {
      width: min(100% - 48px, var(--container));
      margin-inline: auto;
      padding: 0;
    }

    .focus-ring:focus-visible,
    a:focus-visible,
    button:focus-visible {
      outline: 3px solid rgba(196, 109, 92, .38);
      outline-offset: 4px;
      border-radius: 16px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid rgba(255, 255, 255, .16);
      background: rgba(31, 17, 27, .78);
      backdrop-filter: blur(18px);
      box-shadow: 0 8px 30px rgba(27, 17, 24, .12);
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 76px;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      color: #fff8ee;
      font-weight: 800;
      letter-spacing: -.02em;
    }

    .brand:hover {
      color: #fff;
      transform: translateY(-1px);
    }

    .brand-mark {
      position: relative;
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--color-champagne), var(--color-accent));
      box-shadow: 0 10px 28px rgba(196, 109, 92, .28);
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 10px;
      border: 2px solid rgba(69, 21, 47, .58);
      border-radius: 12px;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      right: 8px;
      top: 8px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-primary);
    }

    .brand-text {
      overflow: hidden;
      max-width: 310px;
      text-overflow: ellipsis;
      white-space: nowrap;
      font-size: 18px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      position: relative;
      display: inline-flex;
      align-items: center;
      padding: 10px 14px;
      border-radius: var(--radius-pill);
      color: rgba(255, 248, 238, .82);
      font-size: 15px;
      font-weight: 650;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 7px;
      height: 2px;
      border-radius: 2px;
      background: var(--color-accent);
      opacity: 0;
      transform: scaleX(.35);
      transition: opacity var(--transition), transform var(--transition);
    }

    .nav-links a:hover,
    .nav-links a:focus,
    .nav-links a.active {
      color: #fff;
      background: rgba(255, 255, 255, .08);
    }

    .nav-links a:hover::after,
    .nav-links a:focus::after,
    .nav-links a.active::after {
      opacity: 1;
      transform: scaleX(1);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .age-badge,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      width: fit-content;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 750;
      line-height: 1;
      white-space: nowrap;
    }

    .age-badge {
      padding: 9px 12px;
      border: 1px solid rgba(244, 225, 200, .28);
      background: rgba(244, 225, 200, .12);
      color: var(--color-champagne);
    }

    .age-badge::before,
    .badge-dot::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: currentColor;
      box-shadow: 0 0 0 4px rgba(196, 109, 92, .16);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 15px;
      background: rgba(255, 255, 255, .1);
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
    }

    .menu-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      border-radius: 2px;
      background: #fff8ee;
      transition: transform var(--transition), opacity var(--transition);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

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

    .menu-toggle[aria-expanded="true"] span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 18px;
      border-radius: var(--radius-pill);
      border: 1px solid transparent;
      font-weight: 760;
      line-height: 1.1;
      white-space: nowrap;
      transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn:active {
      transform: translateY(0);
      box-shadow: none;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--color-primary), var(--color-primary-soft));
      color: #fff8ee;
      box-shadow: 0 13px 30px rgba(69, 21, 47, .22);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--color-primary-strong), var(--color-primary));
      color: #fff;
      box-shadow: 0 18px 38px rgba(69, 21, 47, .3);
    }

    .btn-secondary {
      border-color: rgba(69, 21, 47, .2);
      background: rgba(255, 253, 248, .72);
      color: var(--color-primary);
    }

    .btn-secondary:hover {
      border-color: rgba(196, 109, 92, .5);
      background: rgba(244, 225, 200, .58);
      color: var(--color-primary-strong);
    }

    .btn-soft {
      min-height: 38px;
      padding: 10px 15px;
      background: rgba(244, 225, 200, .72);
      color: var(--color-primary);
      border-color: rgba(196, 109, 92, .18);
      box-shadow: none;
    }

    .btn-soft:hover {
      background: var(--color-champagne);
      color: var(--color-primary-strong);
    }

    .page-shell {
      position: relative;
      padding-bottom: var(--section-y);
    }

    .article-hero {
      position: relative;
      padding: 64px 0 34px;
      background:
        linear-gradient(135deg, rgba(27, 17, 24, .9), rgba(69, 21, 47, .78)),
        url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
      color: #fff8ee;
      overflow: hidden;
    }

    .article-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 18% 18%, rgba(244, 225, 200, .26), transparent 26%),
        radial-gradient(circle at 82% 45%, rgba(196, 109, 92, .24), transparent 30%);
      pointer-events: none;
    }

    .article-hero .container {
      position: relative;
      z-index: 1;
    }

    .breadcrumb-wrap {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-bottom: 24px;
      color: rgba(255, 248, 238, .68);
      font-size: 14px;
    }

    .breadcrumb-wrap a {
      color: rgba(255, 248, 238, .82);
    }

    .breadcrumb-wrap a:hover {
      color: var(--color-champagne);
    }

    .breadcrumb-sep {
      color: rgba(244, 225, 200, .46);
    }

    .article-head-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, .72fr);
      gap: 42px;
      align-items: end;
    }

    .article-kicker {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin-bottom: 16px;
      padding: 9px 13px;
      border: 1px solid rgba(244, 225, 200, .24);
      border-radius: var(--radius-pill);
      background: rgba(255, 255, 255, .08);
      color: var(--color-champagne);
      font-size: 13px;
      font-weight: 800;
    }

    .article-kicker::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-accent);
      box-shadow: 0 0 0 5px rgba(196, 109, 92, .18);
    }

    h1 {
      margin: 0;
      max-width: 880px;
      font-size: clamp(32px, 5vw, 52px);
      line-height: 1.16;
      letter-spacing: -.035em;
      font-weight: 820;
      color: #fffaf4;
      word-break: break-word;
    }

    .article-summary {
      max-width: 760px;
      margin: 18px 0 0;
      color: rgba(255, 248, 238, .78);
      font-size: 17px;
      line-height: 1.86;
    }

    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .meta-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 12px;
      border-radius: var(--radius-pill);
      background: rgba(255, 255, 255, .1);
      border: 1px solid rgba(255, 255, 255, .14);
      color: rgba(255, 248, 238, .84);
      font-size: 13px;
      font-weight: 720;
    }

    .hero-cover {
      position: relative;
      min-height: 360px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(244, 225, 200, .22);
      box-shadow: 0 24px 60px rgba(0, 0, 0, .32);
      background: var(--color-primary);
    }

    .hero-cover img {
      width: 100%;
      height: 100%;
      min-height: 360px;
      object-fit: cover;
      filter: saturate(.92) contrast(.95);
    }

    .hero-cover::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, transparent 30%, rgba(27, 17, 24, .74)),
        radial-gradient(circle at 20% 10%, rgba(244, 225, 200, .24), transparent 24%);
    }

    .cover-note {
      position: absolute;
      left: 20px;
      right: 20px;
      bottom: 20px;
      z-index: 1;
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: center;
      padding: 14px 16px;
      border-radius: 20px;
      background: rgba(27, 17, 24, .62);
      border: 1px solid rgba(244, 225, 200, .18);
      backdrop-filter: blur(14px);
      color: rgba(255, 248, 238, .9);
      font-size: 14px;
    }

    .section {
      padding: var(--section-y) 0 0;
    }

    .reading-layout {
      display: grid;
      grid-template-columns: minmax(0, 820px) minmax(260px, 320px);
      gap: 44px;
      align-items: start;
    }

    .main-card,
    .side-card,
    .notice-card,
    .related-card,
    .faq-card,
    .rights-panel,
    .cta-panel {
      border: 1px solid var(--color-border);
      background: rgba(255, 253, 248, .82);
      box-shadow: var(--shadow-card);
      border-radius: var(--radius-lg);
    }

    .main-card {
      padding: clamp(24px, 4vw, 46px);
    }

    .notice-card {
      display: flex;
      gap: 16px;
      align-items: flex-start;
      padding: 18px 20px;
      margin-bottom: 22px;
      background: linear-gradient(135deg, rgba(255, 247, 236, .92), rgba(247, 237, 240, .86));
    }

    .notice-icon {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      background: var(--color-primary);
      color: var(--color-champagne);
      font-weight: 850;
      box-shadow: 0 10px 25px rgba(69, 21, 47, .16);
    }

    .notice-card h2,
    .notice-card h3 {
      margin: 0 0 5px;
      font-size: 18px;
      line-height: 1.35;
      font-weight: 800;
      color: var(--color-primary);
    }

    .notice-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15px;
      line-height: 1.78;
    }

    .article-content {
      color: #2a1b24;
      font-size: 17px;
      line-height: 1.92;
      word-break: break-word;
    }

    .article-content > *:first-child {
      margin-top: 0;
    }

    .article-content p {
      margin: 1.08em 0;
    }

    .article-content h2 {
      margin: 2.1em 0 .82em;
      padding-top: .1em;
      font-size: clamp(25px, 3vw, 34px);
      line-height: 1.28;
      font-weight: 820;
      letter-spacing: -.02em;
      color: var(--color-primary);
    }

    .article-content h3 {
      margin: 1.75em 0 .72em;
      font-size: clamp(21px, 2.5vw, 25px);
      line-height: 1.35;
      font-weight: 780;
      color: var(--color-primary-strong);
    }

    .article-content h4 {
      margin: 1.45em 0 .6em;
      font-size: 19px;
      color: var(--color-primary);
      font-weight: 760;
    }

    .article-content strong {
      color: var(--color-primary-strong);
      font-weight: 800;
    }

    .article-content a {
      color: var(--color-primary-soft);
      font-weight: 720;
      border-bottom: 1px solid rgba(111, 40, 76, .28);
    }

    .article-content a:hover {
      color: var(--color-accent-strong);
      border-bottom-color: currentColor;
    }

    .article-content ul,
    .article-content ol {
      margin: 1em 0 1.25em;
      padding-left: 1.35em;
    }

    .article-content li {
      margin: .5em 0;
      padding-left: .2em;
    }

    .article-content blockquote {
      margin: 1.5em 0;
      padding: 20px 22px;
      border-left: 5px solid var(--color-primary);
      border-radius: 0 20px 20px 0;
      background: rgba(244, 225, 200, .5);
      color: #3a2531;
    }

    .article-content figure {
      margin: 1.8em 0;
    }

    .article-content img {
      width: auto;
      max-width: 100%;
      border-radius: 24px;
      border: 1px solid var(--color-border);
      box-shadow: 0 14px 32px rgba(69, 21, 47, .1);
    }

    .article-content figcaption {
      margin-top: 10px;
      color: var(--color-muted);
      font-size: 14px;
      text-align: center;
    }

    .article-content table {
      width: 100%;
      min-width: 620px;
      border-collapse: separate;
      border-spacing: 0;
      margin: 1.5em 0;
      overflow: hidden;
      border: 1px solid var(--color-border);
      border-radius: 18px;
      background: #fff;
    }

    .article-content table th,
    .article-content table td {
      padding: 13px 15px;
      border-bottom: 1px solid rgba(95, 54, 73, .11);
      vertical-align: top;
    }

    .article-content table th {
      background: rgba(244, 225, 200, .42);
      color: var(--color-primary);
      font-weight: 800;
    }

    .article-content table tr:last-child td {
      border-bottom: 0;
    }

    .article-content pre {
      overflow: auto;
      padding: 18px;
      border-radius: 18px;
      background: #21151c;
      color: #fff7ec;
      font-size: 14px;
      line-height: 1.65;
    }

    .table-responsive {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .empty-state {
      display: grid;
      place-items: center;
      min-height: 280px;
      padding: 34px;
      text-align: center;
      border: 1px dashed var(--color-border-strong);
      border-radius: var(--radius-md);
      background: rgba(255, 247, 236, .68);
    }

    .empty-state-icon {
      width: 60px;
      height: 60px;
      margin: 0 auto 16px;
      display: grid;
      place-items: center;
      border-radius: 22px;
      background: var(--color-primary);
      color: var(--color-champagne);
      font-size: 26px;
      font-weight: 850;
    }

    .empty-state h2 {
      margin: 0 0 8px;
      font-size: 26px;
      color: var(--color-primary);
    }

    .empty-state p {
      margin: 0 0 20px;
      color: var(--color-muted);
    }

    .side-stack {
      position: sticky;
      top: 104px;
      display: grid;
      gap: 18px;
    }

    .side-card {
      padding: 22px;
    }

    .side-card h2,
    .side-card h3 {
      margin: 0 0 12px;
      color: var(--color-primary);
      font-size: 20px;
      font-weight: 820;
    }

    .side-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15px;
      line-height: 1.78;
    }

    .side-list {
      display: grid;
      gap: 12px;
      margin: 16px 0 0;
      padding: 0;
      list-style: none;
    }

    .side-list a,
    .side-list span {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 12px 13px;
      border-radius: 16px;
      background: rgba(247, 237, 240, .72);
      color: var(--color-primary);
      font-size: 14px;
      font-weight: 720;
    }

    .side-list a:hover {
      background: rgba(244, 225, 200, .78);
      color: var(--color-accent-strong);
      transform: translateX(3px);
    }

    .mini-cover {
      position: relative;
      margin-top: 16px;
      overflow: hidden;
      border-radius: 20px;
      border: 1px solid var(--color-border);
      background: var(--color-primary);
    }

    .mini-cover img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      transition: transform var(--transition), filter var(--transition);
    }

    .mini-cover:hover img {
      transform: scale(1.03);
      filter: brightness(.92);
    }

    .section-title {
      max-width: 780px;
      margin-bottom: 28px;
    }

    .section-title .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
      padding: 8px 12px;
      border-radius: var(--radius-pill);
      background: rgba(244, 225, 200, .78);
      color: var(--color-primary);
      font-size: 13px;
      font-weight: 800;
    }

    .section-title h2 {
      margin: 0;
      color: var(--color-primary);
      font-size: clamp(28px, 4vw, 38px);
      line-height: 1.25;
      letter-spacing: -.025em;
      font-weight: 840;
    }

    .section-title p {
      margin: 12px 0 0;
      color: var(--color-muted);
      font-size: 16px;
      line-height: 1.82;
    }

    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 20px;
    }

    .related-card {
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .related-card:hover {
      transform: translateY(-5px);
      border-color: var(--color-border-strong);
      box-shadow: var(--shadow-hover);
    }

    .related-thumb {
      overflow: hidden;
      background: var(--color-primary);
    }

    .related-thumb img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      transition: transform var(--transition), filter var(--transition);
    }

    .related-card:hover .related-thumb img {
      transform: scale(1.035);
      filter: brightness(.92);
    }

    .related-body {
      padding: 20px;
    }

    .related-body .tag {
      display: inline-flex;
      margin-bottom: 10px;
      padding: 6px 10px;
      border-radius: var(--radius-pill);
      background: rgba(244, 225, 200, .76);
      color: var(--color-primary);
      font-size: 12px;
      font-weight: 800;
    }

    .related-body h3 {
      margin: 0 0 9px;
      color: var(--color-primary-strong);
      font-size: 19px;
      line-height: 1.42;
      font-weight: 820;
    }

    .related-body p {
      margin: 0 0 14px;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.76;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--color-primary);
      font-weight: 800;
      font-size: 14px;
    }

    .card-link span {
      transition: transform var(--transition);
    }

    .card-link:hover {
      color: var(--color-accent-strong);
    }

    .card-link:hover span {
      transform: translateX(4px);
    }

    .guide-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .guide-step {
      position: relative;
      padding: 22px;
      min-height: 170px;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      background: rgba(255, 253, 248, .74);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }

    .guide-step::after {
      content: "";
      position: absolute;
      right: -26px;
      top: -26px;
      width: 88px;
      height: 88px;
      border-radius: 50%;
      background: rgba(196, 109, 92, .1);
    }

    .guide-step .num {
      display: grid;
      place-items: center;
      width: 38px;
      height: 38px;
      margin-bottom: 14px;
      border-radius: 15px;
      background: var(--color-primary);
      color: var(--color-champagne);
      font-weight: 850;
    }

    .guide-step h3 {
      margin: 0 0 8px;
      color: var(--color-primary);
      font-size: 18px;
      font-weight: 820;
    }

    .guide-step p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.74;
    }

    .faq-layout {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 28px;
      align-items: start;
    }

    .faq-intro {
      padding: 28px;
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
      color: #fff8ee;
      box-shadow: var(--shadow-soft);
    }

    .faq-intro h2 {
      margin: 0 0 12px;
      font-size: clamp(26px, 3vw, 34px);
      font-weight: 840;
      line-height: 1.25;
    }

    .faq-intro p {
      margin: 0;
      color: rgba(255, 248, 238, .78);
      line-height: 1.82;
    }

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

    .faq-card {
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .faq-card:hover {
      border-color: rgba(196, 109, 92, .36);
      box-shadow: var(--shadow-hover);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 18px 20px;
      background: rgba(255, 253, 248, .78);
      color: var(--color-primary);
      text-align: left;
      font-weight: 820;
    }

    .faq-arrow {
      width: 30px;
      height: 30px;
      flex: 0 0 30px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(244, 225, 200, .72);
      transition: transform var(--transition), background var(--transition);
    }

    .faq-card.open .faq-arrow {
      transform: rotate(45deg);
      background: var(--color-champagne);
    }

    .faq-answer {
      display: none;
      padding: 0 20px 20px;
      color: var(--color-muted);
      font-size: 15px;
      line-height: 1.82;
    }

    .faq-card.open .faq-answer {
      display: block;
    }

    .rights-panel {
      padding: clamp(24px, 4vw, 38px);
      background:
        linear-gradient(135deg, rgba(255, 253, 248, .9), rgba(255, 247, 236, .78)),
        radial-gradient(circle at 92% 8%, rgba(196, 109, 92, .14), transparent 26%);
    }

    .rights-grid {
      display: grid;
      grid-template-columns: .88fr 1.12fr;
      gap: 28px;
      align-items: start;
    }

    .rights-copy h2 {
      margin: 0 0 12px;
      color: var(--color-primary);
      font-size: clamp(27px, 4vw, 36px);
      line-height: 1.25;
      font-weight: 840;
    }

    .rights-copy p {
      margin: 0 0 18px;
      color: var(--color-muted);
      line-height: 1.82;
    }

    .rights-points {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .rights-points li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: #3a2531;
      font-size: 15px;
    }

    .rights-points li::before {
      content: "";
      width: 8px;
      height: 8px;
      flex: 0 0 8px;
      margin-top: 9px;
      border-radius: 50%;
      background: var(--color-accent);
      box-shadow: 0 0 0 4px rgba(196, 109, 92, .12);
    }

    .feedback-form {
      display: grid;
      gap: 14px;
      padding: 20px;
      border-radius: 24px;
      background: rgba(255, 253, 248, .78);
      border: 1px solid var(--color-border);
    }

    .form-row {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .form-field label {
      display: block;
      margin-bottom: 7px;
      color: var(--color-primary);
      font-size: 14px;
      font-weight: 780;
    }

    .form-field input,
    .form-field textarea {
      padding: 12px 14px;
    }

    .form-help {
      margin: -2px 0 0;
      color: var(--color-muted);
      font-size: 13px;
      line-height: 1.65;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      padding: clamp(28px, 5vw, 54px);
      background:
        linear-gradient(135deg, rgba(69, 21, 47, .98), rgba(43, 13, 32, .96)),
        url("/assets/images/backpic/back-3.jpg") center/cover no-repeat;
      color: #fff8ee;
      box-shadow: var(--shadow-soft);
    }

    .cta-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 16% 22%, rgba(244, 225, 200, .18), transparent 26%),
        radial-gradient(circle at 86% 78%, rgba(196, 109, 92, .26), transparent 26%);
      pointer-events: none;
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 28px;
      align-items: center;
    }

    .cta-panel h2 {
      margin: 0 0 10px;
      font-size: clamp(28px, 4vw, 40px);
      line-height: 1.22;
      font-weight: 850;
      letter-spacing: -.025em;
    }

    .cta-panel p {
      margin: 0;
      max-width: 720px;
      color: rgba(255, 248, 238, .78);
      line-height: 1.82;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .cta-actions .btn-secondary {
      background: rgba(255, 255, 255, .08);
      border-color: rgba(244, 225, 200, .32);
      color: #fff8ee;
    }

    .cta-actions .btn-secondary:hover {
      background: rgba(244, 225, 200, .18);
      color: #fff;
    }

    .site-footer {
      padding: 68px 0 28px;
      background:
        radial-gradient(circle at 12% 10%, rgba(196, 109, 92, .16), transparent 28%),
        linear-gradient(180deg, #21151c 0%, #160d13 100%);
      color: rgba(255, 248, 238, .76);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) repeat(3, minmax(160px, .55fr));
      gap: 34px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      color: #fff8ee;
      font-size: 18px;
      font-weight: 820;
    }

    .footer-brand:hover {
      color: var(--color-champagne);
    }

    .footer-text {
      max-width: 520px;
      margin: 0;
      color: rgba(255, 248, 238, .66);
      font-size: 14px;
      line-height: 1.85;
    }

    .footer-col h3 {
      margin: 0 0 14px;
      color: var(--color-champagne);
      font-size: 16px;
      font-weight: 820;
    }

    .footer-links {
      display: grid;
      gap: 9px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .footer-links a {
      color: rgba(255, 248, 238, .68);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--color-accent);
      transform: translateX(3px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 42px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, .1);
      color: rgba(255, 248, 238, .56);
      font-size: 13px;
    }

    @media (max-width: 1080px) {
      :root {
        --section-y: 72px;
      }

      .nav-actions .age-badge {
        display: none;
      }

      .article-head-grid,
      .reading-layout,
      .faq-layout,
      .rights-grid {
        grid-template-columns: 1fr;
      }

      .side-stack {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .guide-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .cta-inner {
        grid-template-columns: 1fr;
      }

      .cta-actions {
        justify-content: flex-start;
      }

      .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 860px) {
      .container {
        width: min(100% - 32px, var(--container));
      }

      .nav-wrap {
        min-height: 68px;
      }

      .brand-text {
        max-width: 220px;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: calc(100% + 10px);
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border-radius: 22px;
        background: rgba(31, 17, 27, .96);
        border: 1px solid rgba(255, 255, 255, .12);
        box-shadow: 0 24px 50px rgba(27, 17, 24, .22);
      }

      .nav-links.show {
        display: flex;
      }

      .nav-links a {
        justify-content: center;
        padding: 13px 16px;
      }

      .nav-actions .btn {
        display: none;
      }

      .article-hero {
        padding-top: 44px;
      }

      .hero-cover,
      .hero-cover img {
        min-height: 300px;
      }

      .main-card {
        border-radius: 24px;
      }

      .side-stack,
      .related-grid,
      .guide-strip,
      .form-row {
        grid-template-columns: 1fr;
      }

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

    @media (max-width: 520px) {
      :root {
        --section-y: 58px;
      }

      .container {
        width: min(100% - 28px, var(--container));
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        flex-basis: 38px;
        border-radius: 14px;
      }

      .brand-text {
        max-width: 176px;
        font-size: 16px;
      }

      .article-summary {
        font-size: 15px;
      }

      .meta-row {
        gap: 8px;
      }

      .meta-pill {
        width: fit-content;
        font-size: 12px;
      }

      .cover-note {
        left: 14px;
        right: 14px;
        bottom: 14px;
        flex-direction: column;
        align-items: flex-start;
      }

      .notice-card {
        flex-direction: column;
      }

      .article-content {
        font-size: 16px;
        line-height: 1.88;
      }

      .related-body,
      .side-card,
      .faq-question,
      .rights-panel {
        padding: 18px;
      }

      .cta-actions,
      .cta-actions .btn,
      .btn {
        width: 100%;
      }

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

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}