/* roulang page: index */
:root {
      --ink: #171512;
      --ink-2: #26211d;
      --charcoal: #211c1a;
      --charcoal-soft: #322b27;
      --paper: #fff9f0;
      --sand: #f3eadf;
      --sand-2: #eee2d4;
      --card: #fffdf8;
      --muted: #746a60;
      --muted-2: #9a8c7f;
      --line: rgba(51, 42, 35, .12);
      --line-dark: rgba(255, 249, 240, .16);
      --coral: #f16b45;
      --coral-2: #ff8a4c;
      --coral-3: #c94731;
      --purple: #8d4c69;
      --cream: #fff3df;
      --white: #ffffff;
      --shadow: 0 18px 50px rgba(42, 32, 24, .12);
      --shadow-soft: 0 12px 32px rgba(42, 32, 24, .08);
      --shadow-warm: 0 16px 36px rgba(241, 107, 69, .28);
      --radius-sm: 12px;
      --radius: 20px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --container: 1200px;
      --ease: .22s ease;
      --header-h: 74px;
    }

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

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

    body {
      min-width: 320px;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 8% 12%, rgba(255, 138, 76, .12), transparent 28%),
        linear-gradient(180deg, #fffaf2 0%, #f7efe5 44%, #fff9f0 100%);
      line-height: 1.78;
      overflow-x: hidden;
    }

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

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

    button,
    input,
    textarea {
      font: inherit;
    }

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

    input,
    textarea {
      width: 100%;
      border: 1px solid rgba(33, 28, 26, .16);
      background: rgba(255, 253, 248, .92);
      color: var(--ink);
      outline: none;
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }

    input:focus,
    textarea:focus,
    button:focus-visible,
    a:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(241, 107, 69, .32);
      outline-offset: 3px;
    }

    input:focus,
    textarea:focus {
      border-color: var(--coral);
      box-shadow: 0 0 0 4px rgba(241, 107, 69, .14);
      background: var(--white);
    }

    ::selection {
      color: var(--white);
      background: var(--coral);
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      z-index: 50;
      width: 100%;
      height: var(--header-h);
      transition: background var(--ease), box-shadow var(--ease), border-color var(--ease), backdrop-filter var(--ease);
    }

    .site-header.is-scrolled,
    .site-header.menu-open {
      background: rgba(255, 249, 240, .92);
      border-bottom: 1px solid var(--line);
      box-shadow: 0 8px 28px rgba(33, 28, 26, .08);
      backdrop-filter: blur(16px);
    }

    .nav-wrap {
      height: var(--header-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-height: 44px;
      font-weight: 900;
      letter-spacing: -.02em;
      color: var(--cream);
    }

    .site-header.is-scrolled .brand,
    .site-header.menu-open .brand {
      color: var(--ink);
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: var(--white);
      background:
        linear-gradient(135deg, var(--coral), var(--purple)),
        var(--coral);
      box-shadow: 0 12px 28px rgba(241, 107, 69, .3);
      position: relative;
      overflow: hidden;
      flex: 0 0 auto;
    }

    .brand-mark::before,
    .brand-mark::after {
      content: "";
      position: absolute;
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .78);
      top: 8px;
    }

    .brand-mark::before { left: 8px; }
    .brand-mark::after { right: 8px; }

    .brand-mark span {
      width: 0;
      height: 0;
      border-top: 8px solid transparent;
      border-bottom: 8px solid transparent;
      border-left: 13px solid var(--white);
      margin-left: 3px;
      position: relative;
      z-index: 1;
    }

    .brand-text {
      font-size: 17px;
      line-height: 1.2;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 0 16px;
      border-radius: 999px;
      color: rgba(255, 243, 223, .86);
      font-size: 15px;
      font-weight: 700;
    }

    .site-header.is-scrolled .nav-links a,
    .site-header.menu-open .nav-links a {
      color: var(--ink-2);
    }

    .nav-links a:hover,
    .nav-links a:active {
      color: var(--white);
      background: rgba(241, 107, 69, .22);
    }

    .site-header.is-scrolled .nav-links a:hover,
    .site-header.menu-open .nav-links a:hover,
    .site-header.is-scrolled .nav-links a.is-active,
    .site-header.menu-open .nav-links a.is-active {
      color: var(--coral-3);
      background: rgba(241, 107, 69, .12);
    }

    .menu-toggle {
      display: none;
      width: 46px;
      height: 46px;
      border-radius: 14px;
      background: rgba(255, 243, 223, .12);
      border: 1px solid rgba(255, 243, 223, .18);
      color: var(--cream);
    }

    .site-header.is-scrolled .menu-toggle,
    .site-header.menu-open .menu-toggle {
      background: rgba(33, 28, 26, .04);
      border-color: var(--line);
      color: var(--ink);
    }

    .menu-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      margin: 5px auto;
      border-radius: 999px;
      background: currentColor;
      transition: transform var(--ease), opacity var(--ease);
    }

    .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);
    }

    .hero {
      position: relative;
      min-height: 760px;
      padding: 138px 0 86px;
      color: var(--cream);
      background:
        linear-gradient(90deg, rgba(23, 21, 18, .96) 0%, rgba(23, 21, 18, .82) 48%, rgba(23, 21, 18, .58) 100%),
        url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
        radial-gradient(circle at 78% 20%, rgba(241, 107, 69, .34), transparent 30%),
        radial-gradient(circle at 72% 78%, rgba(141, 76, 105, .34), transparent 30%);
      background-size: 74px 100%, auto, auto;
      opacity: .8;
    }

    .hero::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: -1px;
      height: 90px;
      background: linear-gradient(180deg, transparent, var(--paper));
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, .98fr) minmax(420px, .82fr);
      gap: 58px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 14px;
      border: 1px solid rgba(255, 243, 223, .18);
      border-radius: 999px;
      background: rgba(255, 243, 223, .08);
      color: rgba(255, 243, 223, .88);
      font-size: 14px;
      font-weight: 800;
      backdrop-filter: blur(10px);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--coral-2);
      box-shadow: 0 0 0 6px rgba(255, 138, 76, .18);
    }

    h1 {
      margin-top: 22px;
      max-width: 780px;
      font-size: clamp(34px, 5.1vw, 64px);
      line-height: 1.1;
      letter-spacing: -.055em;
      font-weight: 950;
    }

    .hero-lead {
      margin-top: 22px;
      max-width: 720px;
      color: rgba(255, 243, 223, .82);
      font-size: 18px;
      line-height: 1.9;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 13px 22px;
      border-radius: 999px;
      font-weight: 900;
      letter-spacing: .01em;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease), filter var(--ease);
      user-select: none;
    }

    .btn-primary {
      color: var(--white);
      background: linear-gradient(135deg, var(--coral), var(--coral-2));
      box-shadow: var(--shadow-warm);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      filter: brightness(1.04);
      box-shadow: 0 22px 44px rgba(241, 107, 69, .34);
    }

    .btn-secondary {
      color: var(--cream);
      border: 1px solid rgba(255, 243, 223, .32);
      background: rgba(255, 243, 223, .08);
    }

    .btn-secondary:hover {
      transform: translateY(-2px);
      border-color: rgba(255, 243, 223, .56);
      background: rgba(255, 243, 223, .14);
    }

    .btn-dark {
      color: var(--white);
      background: var(--ink);
      box-shadow: 0 16px 36px rgba(33, 28, 26, .18);
    }

    .btn-dark:hover {
      transform: translateY(-2px);
      background: var(--charcoal-soft);
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 34px;
    }

    .tag,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      line-height: 1;
      white-space: nowrap;
    }

    .tag {
      padding: 9px 12px;
      color: rgba(255, 243, 223, .82);
      border: 1px solid rgba(255, 243, 223, .15);
      background: rgba(255, 243, 223, .07);
    }

    .tag::before {
      content: "";
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--coral-2);
    }

    .visual-stage {
      position: relative;
      min-height: 540px;
    }

    .poster-stack {
      position: absolute;
      inset: 24px 20px 70px 38px;
      border-radius: 34px;
      border: 1px solid rgba(255, 243, 223, .15);
      overflow: hidden;
      box-shadow: 0 34px 84px rgba(0, 0, 0, .34);
      transform: rotate(-2deg);
      background: var(--charcoal);
    }

    .poster-stack img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: .78;
    }

    .poster-stack::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, transparent 25%, rgba(23, 21, 18, .72) 100%),
        radial-gradient(circle at 30% 20%, rgba(255, 138, 76, .2), transparent 24%);
    }

    .poster-caption {
      position: absolute;
      left: 26px;
      right: 26px;
      bottom: 26px;
      z-index: 2;
    }

    .poster-caption strong {
      display: block;
      font-size: 26px;
      line-height: 1.25;
      letter-spacing: -.03em;
    }

    .poster-caption span {
      display: block;
      margin-top: 10px;
      color: rgba(255, 243, 223, .74);
      font-size: 14px;
    }

    .play-chip {
      position: absolute;
      top: 38px;
      right: 22px;
      z-index: 3;
      width: 78px;
      height: 78px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: rgba(255, 249, 240, .94);
      box-shadow: 0 20px 42px rgba(0, 0, 0, .25);
    }

    .play-chip::before {
      content: "";
      width: 0;
      height: 0;
      border-top: 12px solid transparent;
      border-bottom: 12px solid transparent;
      border-left: 18px solid var(--coral);
      margin-left: 5px;
    }

    .update-panel {
      position: absolute;
      left: 0;
      bottom: 0;
      z-index: 4;
      width: min(100%, 360px);
      padding: 22px;
      border-radius: 26px;
      border: 1px solid rgba(255, 243, 223, .18);
      background: rgba(35, 29, 26, .82);
      box-shadow: 0 24px 56px rgba(0, 0, 0, .3);
      backdrop-filter: blur(16px);
    }

    .update-panel-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
      font-weight: 900;
    }

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

    .mini-list li {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 10px;
      align-items: center;
      padding: 10px;
      border-radius: 16px;
      background: rgba(255, 243, 223, .08);
      color: rgba(255, 243, 223, .78);
      font-size: 13px;
    }

    .mini-index {
      width: 42px;
      height: 32px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: var(--white);
      background: rgba(241, 107, 69, .88);
      font-weight: 900;
    }

    .section {
      padding: 92px 0;
      position: relative;
    }

    .section-tight {
      padding: 70px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 34px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
      color: var(--coral-3);
      font-size: 14px;
      font-weight: 900;
    }

    .section-kicker::before {
      content: "";
      width: 24px;
      height: 2px;
      border-radius: 999px;
      background: var(--coral);
    }

    h2 {
      font-size: clamp(28px, 3.3vw, 42px);
      line-height: 1.22;
      letter-spacing: -.04em;
      font-weight: 950;
      color: var(--ink);
    }

    .section-desc {
      max-width: 520px;
      color: var(--muted);
      font-size: 16px;
    }

    .entry-layout {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 22px;
      align-items: stretch;
    }

    .feature-card,
    .info-card,
    .flow-card,
    .content-card,
    .proof-card,
    .faq-card,
    .form-card {
      border: 1px solid var(--line);
      background: rgba(255, 253, 248, .86);
      box-shadow: var(--shadow-soft);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .feature-card:hover,
    .info-card:hover,
    .flow-card:hover,
    .content-card:hover,
    .proof-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: rgba(241, 107, 69, .28);
    }

    .feature-card {
      min-height: 430px;
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 26px;
      padding: 26px;
      border-radius: var(--radius-lg);
      overflow: hidden;
    }

    .feature-copy {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 26px;
    }

    .feature-copy h3,
    .info-card h3,
    .flow-card h3,
    .content-card h3,
    .proof-card h3 {
      font-size: 23px;
      line-height: 1.35;
      letter-spacing: -.025em;
      font-weight: 950;
    }

    .feature-copy p,
    .info-card p,
    .flow-card p,
    .proof-card p {
      color: var(--muted);
      margin-top: 10px;
    }

    .feature-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
      list-style: none;
    }

    .feature-list li {
      display: flex;
      gap: 10px;
      color: var(--ink-2);
      font-weight: 700;
    }

    .feature-list li::before {
      content: "✓";
      display: grid;
      place-items: center;
      flex: 0 0 auto;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      color: var(--white);
      background: var(--coral);
      font-size: 13px;
    }

    .feature-media {
      position: relative;
      min-height: 100%;
      border-radius: 24px;
      overflow: hidden;
      background: var(--charcoal);
    }

    .feature-media img {
      width: 100%;
      height: 100%;
      min-height: 350px;
      object-fit: cover;
    }

    .feature-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(23, 21, 18, .08), rgba(23, 21, 18, .58));
    }

    .media-note {
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 18px;
      z-index: 2;
      padding: 14px 16px;
      border-radius: 18px;
      color: var(--cream);
      background: rgba(23, 21, 18, .62);
      backdrop-filter: blur(12px);
      font-size: 14px;
      font-weight: 800;
    }

    .side-cards {
      display: grid;
      gap: 22px;
    }

    .info-card {
      padding: 24px;
      border-radius: var(--radius-lg);
    }

    .icon-box {
      width: 52px;
      height: 52px;
      margin-bottom: 18px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      color: var(--coral-3);
      background: rgba(241, 107, 69, .12);
      font-size: 24px;
      font-weight: 950;
    }

    .scroll-strip {
      margin-top: 24px;
      display: flex;
      gap: 12px;
      overflow-x: auto;
      padding-bottom: 6px;
      scrollbar-width: thin;
      scrollbar-color: rgba(241, 107, 69, .4) transparent;
    }

    .strip-item {
      flex: 0 0 auto;
      padding: 12px 16px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(255, 253, 248, .76);
      color: var(--muted);
      font-weight: 800;
      font-size: 14px;
    }

    .experience {
      background:
        linear-gradient(180deg, rgba(243, 234, 223, .72), rgba(255, 249, 240, .96)),
        url("/assets/images/backpic/back-2.jpg") center/cover fixed no-repeat;
    }

    .flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }

    .flow-card {
      position: relative;
      padding: 26px 22px;
      border-radius: var(--radius-lg);
      overflow: hidden;
    }

    .flow-card::before {
      content: "";
      position: absolute;
      top: 35px;
      left: 74px;
      right: -20px;
      height: 1px;
      background: linear-gradient(90deg, rgba(241, 107, 69, .42), transparent);
    }

    .flow-card:last-child::before {
      display: none;
    }

    .step-no {
      width: 48px;
      height: 48px;
      margin-bottom: 18px;
      border-radius: 17px;
      display: grid;
      place-items: center;
      color: var(--white);
      background: linear-gradient(135deg, var(--ink), var(--coral-3));
      font-weight: 950;
      box-shadow: 0 12px 26px rgba(33, 28, 26, .16);
    }

    .updates {
      background: var(--paper);
    }

    .updates-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 22px;
      align-items: stretch;
    }

    .content-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--card);
    }

    .featured-post img {
      width: 100%;
      height: 270px;
      object-fit: cover;
    }

    .post-body {
      padding: 24px;
    }

    .badge {
      padding: 8px 10px;
      color: var(--coral-3);
      background: rgba(241, 107, 69, .12);
      border: 1px solid rgba(241, 107, 69, .18);
    }

    .post-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
      color: var(--muted-2);
      font-size: 13px;
      font-weight: 800;
    }

    .post-title {
      color: var(--ink);
      transition: color var(--ease);
    }

    .content-card:hover .post-title,
    .news-item:hover .news-title {
      color: var(--coral-3);
    }

    .post-excerpt {
      margin-top: 12px;
      color: var(--muted);
      line-height: 1.82;
    }

    .read-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 20px;
      color: var(--coral-3);
      font-weight: 950;
    }

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

    .content-card:hover .read-link span,
    .news-item:hover .read-link span {
      transform: translateX(4px);
    }

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

    .news-item {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px;
      border-radius: 24px;
      border: 1px solid var(--line);
      background: rgba(255, 253, 248, .86);
      box-shadow: 0 10px 26px rgba(42, 32, 24, .06);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .news-item:hover {
      transform: translateY(-3px);
      border-color: rgba(241, 107, 69, .26);
      box-shadow: var(--shadow-soft);
    }

    .news-title {
      margin-top: 8px;
      font-size: 20px;
      line-height: 1.35;
      font-weight: 950;
      transition: color var(--ease);
    }

    .news-excerpt {
      margin-top: 8px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.72;
    }

    .news-arrow {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--coral-3);
      background: rgba(241, 107, 69, .12);
      font-weight: 950;
      transition: transform var(--ease), background var(--ease);
    }

    .news-item:hover .news-arrow {
      transform: translateX(4px);
      background: rgba(241, 107, 69, .18);
    }

    .empty-state {
      padding: 42px;
      border-radius: var(--radius-lg);
      border: 1px dashed rgba(241, 107, 69, .36);
      background: rgba(255, 253, 248, .8);
      color: var(--muted);
      text-align: center;
      font-weight: 900;
      box-shadow: var(--shadow-soft);
    }

    .proof-section {
      padding-top: 20px;
    }

    .proof-grid {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 22px;
      align-items: stretch;
    }

    .proof-image {
      border-radius: var(--radius-xl);
      overflow: hidden;
      min-height: 420px;
      box-shadow: var(--shadow);
      position: relative;
    }

    .proof-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .proof-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent, rgba(23, 21, 18, .5));
    }

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

    .proof-card {
      padding: 24px;
      border-radius: var(--radius-lg);
    }

    .proof-num {
      display: block;
      margin-bottom: 12px;
      color: var(--coral-3);
      font-size: 34px;
      line-height: 1;
      font-weight: 950;
      letter-spacing: -.04em;
    }

    .feedback {
      color: var(--cream);
      background:
        linear-gradient(120deg, rgba(23, 21, 18, .96), rgba(40, 31, 28, .9)),
        url("/assets/images/backpic/back-3.jpg") center/cover no-repeat;
      overflow: hidden;
    }

    .feedback .section-kicker,
    .feedback h2 {
      color: var(--cream);
    }

    .feedback .section-desc {
      color: rgba(255, 243, 223, .72);
    }

    .cta-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 30px;
      align-items: center;
    }

    .cta-copy {
      padding: 8px 0;
    }

    .cta-points {
      display: grid;
      gap: 12px;
      margin-top: 26px;
      list-style: none;
    }

    .cta-points li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: rgba(255, 243, 223, .82);
    }

    .cta-points li::before {
      content: "";
      flex: 0 0 auto;
      width: 9px;
      height: 9px;
      margin-top: 10px;
      border-radius: 50%;
      background: var(--coral-2);
      box-shadow: 0 0 0 6px rgba(255, 138, 76, .14);
    }

    .form-card {
      padding: 26px;
      border-radius: var(--radius-xl);
      background: rgba(255, 249, 240, .95);
      color: var(--ink);
      box-shadow: 0 28px 70px rgba(0, 0, 0, .24);
    }

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

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

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

    .form-field label {
      color: var(--ink-2);
      font-size: 14px;
      font-weight: 900;
    }

    .form-field input,
    .form-field textarea {
      min-height: 48px;
      padding: 12px 14px;
      border-radius: 16px;
    }

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

    .form-note {
      margin-top: 12px;
      color: var(--muted);
      font-size: 13px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 32px;
      align-items: start;
    }

    .faq-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--card);
    }

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

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

    .faq-item summary {
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 22px 24px;
      cursor: pointer;
      font-size: 18px;
      font-weight: 950;
      line-height: 1.4;
    }

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

    .faq-icon {
      flex: 0 0 auto;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--coral-3);
      background: rgba(241, 107, 69, .12);
      transition: transform var(--ease), background var(--ease);
    }

    .faq-item[open] .faq-icon {
      transform: rotate(45deg);
      background: rgba(241, 107, 69, .18);
    }

    .faq-answer {
      padding: 0 24px 24px;
      color: var(--muted);
    }

    .site-footer {
      color: rgba(255, 243, 223, .76);
      background: var(--ink);
      padding: 56px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr .8fr;
      gap: 34px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--cream);
      font-size: 18px;
      font-weight: 950;
    }

    .footer-about {
      margin-top: 16px;
      max-width: 520px;
      color: rgba(255, 243, 223, .68);
    }

    .footer-title {
      margin-bottom: 14px;
      color: var(--cream);
      font-weight: 950;
    }

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

    .footer-links a {
      color: rgba(255, 243, 223, .72);
    }

    .footer-links a:hover {
      color: var(--coral-2);
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 42px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 243, 223, .12);
      color: rgba(255, 243, 223, .52);
      font-size: 13px;
    }

    @media (max-width: 1080px) {
      .hero-grid,
      .entry-layout,
      .updates-grid,
      .proof-grid,
      .cta-grid,
      .faq-wrap {
        grid-template-columns: 1fr;
      }

      .visual-stage {
        min-height: 500px;
      }

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

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

      .flow-card::before {
        display: none;
      }

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

    @media (max-width: 767px) {
      :root {
        --header-h: 68px;
      }

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

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

      .nav-links {
        position: absolute;
        top: var(--header-h);
        left: 14px;
        right: 14px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: 22px;
        background: rgba(255, 249, 240, .96);
        box-shadow: var(--shadow);
      }

      .site-header.menu-open .nav-links {
        display: flex;
      }

      .nav-links a {
        justify-content: center;
        color: var(--ink-2);
      }

      .hero {
        min-height: auto;
        padding: 116px 0 72px;
      }

      .hero-grid {
        gap: 30px;
      }

      .hero-actions {
        display: grid;
      }

      .btn {
        width: 100%;
      }

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

      .poster-stack {
        inset: 16px 0 76px 10px;
      }

      .update-panel {
        width: calc(100% - 10px);
      }

      .section {
        padding: 70px 0;
      }

      .section-head {
        display: grid;
        gap: 14px;
      }

      .flow,
      .proof-cards,
      .form-grid {
        grid-template-columns: 1fr;
      }

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

      .news-arrow {
        width: 100%;
        border-radius: 16px;
      }

      .proof-image {
        min-height: 300px;
      }

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

    @media (max-width: 420px) {
      .brand-text {
        max-width: 220px;
        white-space: normal;
        font-size: 15px;
      }

      h1 {
        font-size: 32px;
      }

      .poster-caption strong {
        font-size: 21px;
      }

      .play-chip {
        width: 62px;
        height: 62px;
      }

      .post-body,
      .info-card,
      .flow-card,
      .proof-card,
      .form-card {
        padding: 20px;
      }
    }

/* roulang page: article */
:root {
      --ink: #171512;
      --ink-2: #26211d;
      --charcoal: #211c1a;
      --charcoal-soft: #322b27;
      --paper: #fff9f0;
      --sand: #f3eadf;
      --sand-2: #eee2d4;
      --card: #fffdf8;
      --muted: #746a60;
      --muted-2: #9a8c7f;
      --line: rgba(51, 42, 35, .12);
      --line-dark: rgba(255, 249, 240, .16);
      --coral: #f16b45;
      --coral-2: #ff8a4c;
      --coral-3: #c94731;
      --purple: #8d4c69;
      --cream: #fff3df;
      --white: #ffffff;
      --shadow: 0 18px 50px rgba(42, 32, 24, .12);
      --shadow-soft: 0 12px 32px rgba(42, 32, 24, .08);
      --shadow-warm: 0 16px 36px rgba(241, 107, 69, .28);
      --radius-sm: 12px;
      --radius: 20px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --container: 1200px;
      --ease: .22s ease;
      --header-h: 74px;
    }

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

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

    body {
      min-width: 320px;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 8% 12%, rgba(255, 138, 76, .12), transparent 28%),
        linear-gradient(180deg, #fffaf2 0%, #f7efe5 44%, #fff9f0 100%);
      line-height: 1.78;
      overflow-x: hidden;
    }

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

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

    button,
    input,
    textarea {
      font: inherit;
    }

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

    input,
    textarea {
      width: 100%;
      border: 1px solid rgba(33, 28, 26, .16);
      background: rgba(255, 253, 248, .92);
      color: var(--ink);
      outline: none;
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }

    input:focus,
    textarea:focus,
    button:focus-visible,
    a:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(241, 107, 69, .32);
      outline-offset: 3px;
    }

    input:focus,
    textarea:focus {
      border-color: var(--coral);
      box-shadow: 0 0 0 4px rgba(241, 107, 69, .14);
      background: var(--white);
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      z-index: 50;
      width: 100%;
      height: var(--header-h);
      transition: background var(--ease), box-shadow var(--ease), border-color var(--ease), backdrop-filter var(--ease);
    }

    .site-header.is-scrolled,
    .site-header.menu-open {
      background: rgba(255, 249, 240, .92);
      border-bottom: 1px solid var(--line);
      box-shadow: 0 8px 28px rgba(33, 28, 26, .08);
      backdrop-filter: blur(16px);
    }

    .nav-wrap {
      height: var(--header-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-height: 44px;
      font-weight: 900;
      letter-spacing: -.02em;
      color: var(--cream);
    }

    .site-header.is-scrolled .brand,
    .site-header.menu-open .brand {
      color: var(--ink);
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: var(--white);
      background:
        linear-gradient(135deg, var(--coral), var(--purple)),
        var(--coral);
      box-shadow: 0 12px 28px rgba(241, 107, 69, .3);
      position: relative;
      overflow: hidden;
      flex: 0 0 auto;
    }

    .brand-mark::before,
    .brand-mark::after {
      content: "";
      position: absolute;
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .78);
      top: 8px;
    }

    .brand-mark::before {
      left: 8px;
    }

    .brand-mark::after {
      right: 8px;
    }

    .brand-mark span {
      width: 0;
      height: 0;
      border-top: 8px solid transparent;
      border-bottom: 8px solid transparent;
      border-left: 13px solid var(--white);
      margin-left: 3px;
      position: relative;
      z-index: 1;
    }

    .brand-text {
      font-size: 17px;
      line-height: 1.2;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 0 16px;
      border-radius: 999px;
      color: rgba(255, 243, 223, .86);
      font-size: 15px;
      font-weight: 700;
    }

    .site-header.is-scrolled .nav-links a,
    .site-header.menu-open .nav-links a {
      color: var(--ink-2);
    }

    .nav-links a:hover,
    .nav-links a:active {
      color: var(--white);
      background: rgba(241, 107, 69, .22);
    }

    .site-header.is-scrolled .nav-links a:hover,
    .site-header.menu-open .nav-links a:hover,
    .site-header.is-scrolled .nav-links a.is-active,
    .site-header.menu-open .nav-links a.is-active {
      color: var(--coral-3);
      background: rgba(241, 107, 69, .12);
    }

    .menu-toggle {
      display: none;
      width: 46px;
      height: 46px;
      border-radius: 14px;
      background: rgba(255, 243, 223, .12);
      border: 1px solid rgba(255, 243, 223, .18);
      color: var(--cream);
    }

    .site-header.is-scrolled .menu-toggle,
    .site-header.menu-open .menu-toggle {
      background: rgba(33, 28, 26, .04);
      border-color: var(--line);
      color: var(--ink);
    }

    .menu-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      margin: 5px auto;
      border-radius: 999px;
      background: currentColor;
      transition: transform var(--ease), opacity var(--ease);
    }

    .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-main,
    .btn-ghost,
    .btn-soft {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 12px 22px;
      border-radius: 999px;
      font-weight: 800;
      letter-spacing: .01em;
      border: 1px solid transparent;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease), filter var(--ease);
    }

    .btn-main {
      color: var(--white);
      background: linear-gradient(135deg, var(--coral), var(--coral-2));
      box-shadow: var(--shadow-warm);
    }

    .btn-main:hover {
      color: var(--white);
      transform: translateY(-2px);
      filter: brightness(1.04);
      box-shadow: 0 20px 46px rgba(241, 107, 69, .36);
    }

    .btn-ghost {
      color: var(--cream);
      border-color: rgba(255, 243, 223, .28);
      background: rgba(255, 243, 223, .08);
    }

    .btn-ghost:hover {
      color: var(--white);
      border-color: rgba(255, 243, 223, .52);
      background: rgba(255, 243, 223, .15);
      transform: translateY(-2px);
    }

    .btn-soft {
      color: var(--coral-3);
      background: rgba(241, 107, 69, .1);
      border-color: rgba(241, 107, 69, .16);
    }

    .btn-soft:hover {
      color: var(--white);
      background: var(--coral);
      transform: translateY(-2px);
      box-shadow: 0 14px 28px rgba(241, 107, 69, .22);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      width: fit-content;
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 13px;
      font-weight: 800;
      color: var(--coral-3);
      background: rgba(241, 107, 69, .1);
      border: 1px solid rgba(241, 107, 69, .14);
    }

    .badge.dark {
      color: var(--cream);
      background: rgba(255, 243, 223, .1);
      border-color: rgba(255, 243, 223, .18);
    }

    .section {
      padding: 86px 0;
      position: relative;
    }

    .section-head {
      margin-bottom: 30px;
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin-bottom: 12px;
      color: var(--coral-3);
      font-weight: 900;
      font-size: 14px;
    }

    .section-kicker::before {
      content: "";
      width: 28px;
      height: 2px;
      border-radius: 999px;
      background: var(--coral);
    }

    .section-title {
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.18;
      font-weight: 950;
      letter-spacing: -.04em;
      margin: 0;
    }

    .section-desc {
      max-width: 640px;
      margin-top: 12px;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.85;
    }

    .article-hero {
      min-height: 520px;
      padding: calc(var(--header-h) + 70px) 0 70px;
      color: var(--cream);
      background:
        linear-gradient(135deg, rgba(33, 28, 26, .95), rgba(33, 28, 26, .78)),
        url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
      position: relative;
      overflow: hidden;
    }

    .article-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 18% 30%, rgba(241, 107, 69, .28), transparent 28%),
        radial-gradient(circle at 84% 18%, rgba(141, 76, 105, .25), transparent 28%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 1px, transparent 1px 74px);
      pointer-events: none;
    }

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

    .breadcrumb-line {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      color: rgba(255, 243, 223, .72);
      font-size: 14px;
      margin-bottom: 28px;
    }

    .breadcrumb-line a {
      color: rgba(255, 243, 223, .86);
      border-bottom: 1px solid transparent;
    }

    .breadcrumb-line a:hover {
      color: var(--coral-2);
      border-bottom-color: rgba(255, 138, 76, .48);
    }

    .article-hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, .72fr);
      gap: 46px;
      align-items: center;
    }

    .article-title-wrap h1 {
      margin: 18px 0 18px;
      max-width: 850px;
      font-size: clamp(34px, 5.2vw, 58px);
      line-height: 1.12;
      font-weight: 950;
      letter-spacing: -.05em;
      color: var(--cream);
    }

    .article-summary {
      max-width: 760px;
      color: rgba(255, 243, 223, .82);
      font-size: 17px;
      line-height: 1.9;
      margin: 0;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
      color: rgba(255, 243, 223, .76);
      font-size: 14px;
    }

    .meta-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255, 243, 223, .09);
      border: 1px solid rgba(255, 243, 223, .14);
    }

    .cover-panel {
      position: relative;
      padding: 12px;
      border-radius: var(--radius-xl);
      background: rgba(255, 243, 223, .1);
      border: 1px solid rgba(255, 243, 223, .16);
      box-shadow: 0 24px 70px rgba(0, 0, 0, .28);
      transform: rotate(1deg);
    }

    .cover-panel img {
      width: 100%;
      min-height: 330px;
      object-fit: cover;
      border-radius: 28px;
    }

    .cover-caption {
      position: absolute;
      left: 26px;
      right: 26px;
      bottom: 26px;
      padding: 14px 16px;
      border-radius: 18px;
      background: rgba(33, 28, 26, .78);
      border: 1px solid rgba(255, 243, 223, .18);
      backdrop-filter: blur(10px);
      color: rgba(255, 243, 223, .86);
      font-size: 14px;
    }

    .read-shell {
      margin-top: -46px;
      position: relative;
      z-index: 2;
    }

    .read-layout {
      display: grid;
      grid-template-columns: minmax(0, 800px) minmax(260px, 340px);
      gap: 34px;
      align-items: start;
    }

    .article-card,
    .side-card,
    .related-card,
    .cta-card,
    .feedback-card,
    .empty-card {
      background: rgba(255, 253, 248, .94);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
    }

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

    .article-content {
      color: var(--ink-2);
      font-size: 17px;
      line-height: 1.92;
      overflow-wrap: break-word;
    }

    .article-content p {
      margin: 0 0 20px;
    }

    .article-content h2,
    .article-content h3,
    .article-content h4 {
      color: var(--ink);
      font-weight: 950;
      line-height: 1.28;
      letter-spacing: -.03em;
    }

    .article-content h2 {
      margin: 42px 0 16px;
      padding-top: 8px;
      font-size: 30px;
    }

    .article-content h3 {
      margin: 32px 0 14px;
      font-size: 24px;
    }

    .article-content h4 {
      margin: 26px 0 12px;
      font-size: 20px;
    }

    .article-content ul,
    .article-content ol {
      margin: 0 0 22px 22px;
      padding-left: 8px;
    }

    .article-content li {
      margin: 8px 0;
    }

    .article-content a {
      color: var(--coral-3);
      font-weight: 800;
      border-bottom: 1px solid rgba(201, 71, 49, .32);
    }

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

    .article-content blockquote {
      margin: 28px 0;
      padding: 20px 22px;
      border-left: 5px solid var(--coral);
      border-radius: 0 18px 18px 0;
      color: var(--ink-2);
      background: rgba(241, 107, 69, .08);
    }

    .article-content img {
      margin: 28px auto;
      border-radius: 22px;
      box-shadow: var(--shadow-soft);
    }

    .article-content figure {
      margin: 30px 0;
    }

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

    .article-content table {
      width: 100%;
      border-collapse: collapse;
      margin: 28px 0;
      overflow: hidden;
      border-radius: 16px;
      font-size: 15px;
    }

    .article-content th,
    .article-content td {
      padding: 13px 14px;
      border: 1px solid rgba(51, 42, 35, .12);
      text-align: left;
    }

    .article-content th {
      background: var(--sand);
      font-weight: 900;
    }

    .article-content code {
      padding: 2px 6px;
      border-radius: 8px;
      color: var(--coral-3);
      background: rgba(241, 107, 69, .1);
      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
      font-size: .92em;
    }

    .not-found-box {
      text-align: center;
      padding: 34px 12px;
    }

    .not-found-icon {
      width: 72px;
      height: 72px;
      margin: 0 auto 18px;
      display: grid;
      place-items: center;
      border-radius: 24px;
      color: var(--white);
      background: linear-gradient(135deg, var(--coral), var(--purple));
      box-shadow: var(--shadow-warm);
      font-size: 30px;
      font-weight: 950;
    }

    .not-found-box h2 {
      margin: 0 0 10px;
      font-size: 28px;
      font-weight: 950;
    }

    .not-found-box p {
      color: var(--muted);
      margin: 0 0 22px;
    }

    .article-tools {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 28px;
      margin-top: 34px;
      border-top: 1px solid var(--line);
    }

    .side-stack {
      display: grid;
      gap: 18px;
      position: sticky;
      top: calc(var(--header-h) + 22px);
    }

    .side-card {
      padding: 22px;
    }

    .side-title {
      display: flex;
      align-items: center;
      gap: 9px;
      margin-bottom: 14px;
      font-size: 18px;
      font-weight: 950;
      letter-spacing: -.02em;
    }

    .side-title::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--coral);
      box-shadow: 0 0 0 6px rgba(241, 107, 69, .12);
    }

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

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

    .side-list a {
      display: grid;
      gap: 5px;
      padding: 13px 14px;
      border-radius: 16px;
      background: rgba(243, 234, 223, .56);
      border: 1px solid rgba(51, 42, 35, .08);
    }

    .side-list a:hover {
      transform: translateY(-2px);
      border-color: rgba(241, 107, 69, .22);
      background: rgba(241, 107, 69, .08);
    }

    .side-list strong {
      color: var(--ink);
      font-size: 15px;
      line-height: 1.48;
    }

    .side-list span {
      color: var(--muted);
      font-size: 13px;
    }

    .mini-cover {
      border-radius: 22px;
      overflow: hidden;
      margin-bottom: 16px;
      background: var(--sand);
    }

    .mini-cover img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
    }

    .cta-card {
      padding: clamp(24px, 4vw, 34px);
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
      background:
        radial-gradient(circle at 8% 10%, rgba(241, 107, 69, .13), transparent 35%),
        linear-gradient(135deg, rgba(255, 253, 248, .98), rgba(243, 234, 223, .92));
    }

    .cta-card h2 {
      margin: 0 0 8px;
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 950;
      letter-spacing: -.04em;
    }

    .cta-card p {
      margin: 0;
      color: var(--muted);
      max-width: 700px;
    }

    .related-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .related-card {
      padding: 22px;
      display: grid;
      gap: 12px;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .related-card:hover {
      transform: translateY(-4px);
      border-color: rgba(241, 107, 69, .24);
      box-shadow: var(--shadow);
    }

    .related-card:hover h3 {
      color: var(--coral-3);
    }

    .related-card h3 {
      margin: 0;
      font-size: 20px;
      font-weight: 950;
      line-height: 1.35;
      transition: color var(--ease);
    }

    .related-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.72;
    }

    .card-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 9px;
      color: var(--muted-2);
      font-size: 13px;
      font-weight: 700;
    }

    .arrow-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      width: fit-content;
      color: var(--coral-3);
      font-weight: 900;
    }

    .arrow-link::after {
      content: "→";
      transition: transform var(--ease);
    }

    .related-card:hover .arrow-link::after,
    .arrow-link:hover::after {
      transform: translateX(4px);
    }

    .feedback-card {
      padding: clamp(24px, 4vw, 34px);
      background: var(--charcoal);
      color: var(--cream);
      overflow: hidden;
      position: relative;
    }

    .feedback-card::before {
      content: "";
      position: absolute;
      width: 240px;
      height: 240px;
      right: -90px;
      top: -110px;
      border-radius: 50%;
      background: rgba(241, 107, 69, .2);
      filter: blur(4px);
    }

    .feedback-card > * {
      position: relative;
      z-index: 1;
    }

    .feedback-card h2 {
      margin: 0 0 10px;
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 950;
      letter-spacing: -.04em;
    }

    .feedback-card p {
      margin: 0 0 22px;
      color: rgba(255, 243, 223, .76);
    }

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

    .feedback-form label {
      display: grid;
      gap: 7px;
      color: rgba(255, 243, 223, .84);
      font-size: 14px;
      font-weight: 800;
    }

    .feedback-form input,
    .feedback-form textarea {
      min-height: 48px;
      padding: 12px 14px;
      border-radius: 16px;
      color: var(--cream);
      background: rgba(255, 243, 223, .08);
      border-color: rgba(255, 243, 223, .18);
    }

    .feedback-form input::placeholder,
    .feedback-form textarea::placeholder {
      color: rgba(255, 243, 223, .48);
    }

    .feedback-form textarea,
    .feedback-form .form-full {
      grid-column: 1 / -1;
    }

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

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 20px;
      background: rgba(255, 253, 248, .92);
      box-shadow: 0 8px 24px rgba(42, 32, 24, .06);
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      font-weight: 950;
      color: var(--ink);
    }

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

    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--coral-3);
      background: rgba(241, 107, 69, .1);
      transition: transform var(--ease), background var(--ease);
    }

    .faq-item[open] summary::after {
      content: "−";
      transform: rotate(180deg);
      background: rgba(241, 107, 69, .16);
    }

    .faq-item p {
      margin: 0;
      padding: 0 22px 20px;
      color: var(--muted);
      line-height: 1.82;
    }

    .site-footer {
      padding: 58px 0 26px;
      color: rgba(255, 243, 223, .8);
      background:
        radial-gradient(circle at 20% 0, rgba(241, 107, 69, .2), transparent 26%),
        var(--charcoal);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.4fr) .7fr .8fr;
      gap: 44px;
      padding-bottom: 34px;
      border-bottom: 1px solid var(--line-dark);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
      color: var(--cream);
      font-size: 18px;
      font-weight: 950;
    }

    .footer-about {
      max-width: 560px;
      margin: 0;
      color: rgba(255, 243, 223, .68);
      line-height: 1.85;
    }

    .footer-title {
      color: var(--cream);
      font-weight: 950;
      margin-bottom: 14px;
    }

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

    .footer-links a {
      color: rgba(255, 243, 223, .7);
    }

    .footer-links a:hover {
      color: var(--coral-2);
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 24px;
      color: rgba(255, 243, 223, .56);
      font-size: 14px;
    }

    @media (max-width: 1024px) {
      .article-hero-grid,
      .read-layout {
        grid-template-columns: 1fr;
      }

      .cover-panel {
        max-width: 620px;
        transform: none;
      }

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

      .side-card:first-child {
        grid-column: 1 / -1;
      }

      .section-head,
      .cta-card {
        align-items: start;
        grid-template-columns: 1fr;
      }

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

      .footer-grid > div:first-child {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 767px) {
      :root {
        --header-h: 68px;
      }

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

      .brand-text {
        max-width: 210px;
        white-space: normal;
        font-size: 15px;
      }

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

      .nav-links {
        position: absolute;
        top: calc(var(--header-h) + 10px);
        left: 14px;
        right: 14px;
        display: none;
        padding: 12px;
        border-radius: 22px;
        background: rgba(255, 249, 240, .96);
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
        backdrop-filter: blur(16px);
      }

      .site-header.menu-open .nav-links {
        display: grid;
        gap: 6px;
      }

      .nav-links a,
      .site-header .nav-links a {
        width: 100%;
        justify-content: center;
        color: var(--ink-2);
      }

      .nav-links a:hover,
      .nav-links a.is-active {
        color: var(--coral-3);
        background: rgba(241, 107, 69, .12);
      }

      .article-hero {
        min-height: auto;
        padding: calc(var(--header-h) + 48px) 0 56px;
      }

      .article-title-wrap h1 {
        font-size: clamp(32px, 10vw, 42px);
      }

      .article-summary {
        font-size: 16px;
      }

      .cover-panel img {
        min-height: 240px;
      }

      .read-shell {
        margin-top: -28px;
      }

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

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

      .article-content h2 {
        font-size: 25px;
      }

      .article-content h3 {
        font-size: 21px;
      }

      .side-stack,
      .related-grid,
      .feedback-form,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .feedback-form textarea,
      .feedback-form .form-full,
      .footer-grid > div:first-child {
        grid-column: auto;
      }

      .section {
        padding: 64px 0;
      }

      .section-head {
        display: block;
      }

      .cta-card {
        display: grid;
      }

      .btn-main,
      .btn-ghost,
      .btn-soft {
        width: 100%;
      }

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

    @media (max-width: 420px) {
      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

      .brand-text {
        max-width: 176px;
        font-size: 14px;
      }

      .article-meta {
        display: grid;
        grid-template-columns: 1fr;
      }

      .meta-pill {
        width: 100%;
      }

      .article-tools {
        display: grid;
      }

      .cover-caption {
        left: 20px;
        right: 20px;
        bottom: 20px;
      }
    }

/* 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}