/* roulang page: index */
:root {
      --c-primary: #0F766E;
      --c-primary-dark: #115E59;
      --c-ink: #042F2E;
      --c-slate: #134E4A;
      --c-mint: #5EEAD4;
      --c-fog: #F0FDFA;
      --c-ice: #CCFBF1;
      --c-amber: #D97706;
      --c-bg: #F8FAFC;
      --c-white: #FFFFFF;
      --c-text: #134E4A;
      --c-text-muted: #4B635F;
      --c-border: rgba(19, 78, 74, 0.12);
      --c-shadow: 0 10px 30px rgba(4, 47, 46, 0.08);
      --c-shadow-hover: 0 18px 40px rgba(4, 47, 46, 0.14);
      --radius-card: 24px;
      --radius-btn: 999px;
      --radius-input: 14px;
      --space-section: 88px;
      --space-section-m: 56px;
      --grad-brand: linear-gradient(135deg, #042F2E 0%, #115E59 42%, #0F766E 72%, #5EEAD4 160%);
      --grad-btn: linear-gradient(135deg, #115E59 0%, #0F766E 58%, #14B8A6 100%);
      --grad-card: linear-gradient(135deg, #F0FDFA 0%, #FFFFFF 68%);
      --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; overflow-x: hidden; }
    body {
      font-family: var(--font);
      font-size: 16px;
      font-weight: 400;
      line-height: 1.75;
      color: var(--c-text);
      background: var(--c-bg);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { margin: 0; color: var(--c-ink); line-height: 1.28; font-weight: 700; }
    p { margin: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible {
      outline: 3px solid var(--c-mint);
      outline-offset: 3px;
    }
    .container {
      width: min(1280px, calc(100% - 40px));
      margin: 0 auto;
    }
    .topbar {
      background: var(--c-fog);
      color: var(--c-slate);
      font-size: 13px;
      border-bottom: 1px solid var(--c-border);
    }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 38px;
    }
    .topbar a:hover { color: var(--c-primary); }
    .trust-chip {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 2px 10px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--c-border);
      color: var(--c-primary-dark);
    }
    .mainnav {
      background: #fff;
      border-bottom: 1px solid var(--c-border);
      transition: box-shadow .25s ease, background .25s ease;
    }
    .mainnav.is-sticky {
      position: sticky;
      top: 0;
      z-index: 60;
      box-shadow: 0 8px 24px rgba(4,47,46,.08);
    }
    .nav-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 74px;
      gap: 18px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .logo-mark {
      width: 42px; height: 42px;
      border-radius: 12px;
      background: var(--grad-btn);
      display: grid;
      place-items: center;
      box-shadow: 0 8px 16px rgba(15,118,110,.28);
    }
    .logo-text {
      font-weight: 700;
      font-size: 18px;
      color: var(--c-ink);
      letter-spacing: .02em;
      line-height: 1.2;
    }
    .logo-text small {
      display: block;
      font-size: 11px;
      font-weight: 500;
      color: var(--c-primary);
      letter-spacing: .12em;
    }
    .menu {
      display: flex;
      align-items: center;
      gap: 4px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .menu a {
      position: relative;
      padding: 8px 12px;
      font-size: 15px;
      color: var(--c-slate);
      border-radius: 10px;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
    }
    .menu a:hover { color: var(--c-primary); background: var(--c-fog); }
    .menu a.active { color: var(--c-primary-dark); font-weight: 600; }
    .menu a.active::after {
      content: "";
      position: absolute;
      left: 12px; right: 12px; bottom: 4px;
      height: 2px;
      background: var(--grad-btn);
      border-radius: 2px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
      border: 2px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, filter .2s ease, background .2s ease;
    }
    .btn-primary {
      background: var(--grad-btn);
      color: #fff;
      box-shadow: 0 8px 18px rgba(15,118,110,.28);
    }
    .btn-primary:hover {
      filter: brightness(1.08);
      transform: translateY(-1px);
      box-shadow: 0 0 0 2px rgba(94,234,212,.45), 0 12px 24px rgba(15,118,110,.32);
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      background: transparent;
      color: #fff;
      border-color: rgba(255,255,255,.55);
    }
    .btn-ghost:hover { background: rgba(255,255,255,.1); box-shadow: 0 0 0 2px rgba(94,234,212,.35); }
    .btn-line {
      background: #fff;
      color: var(--c-primary-dark);
      border-color: var(--c-primary);
    }
    .btn-line:hover {
      background: var(--c-fog);
      box-shadow: 0 0 0 2px rgba(15,118,110,.18);
    }
    .nav-cta { flex-shrink: 0; }
    .burger {
      display: none;
      width: 44px; height: 44px;
      border: 1px solid var(--c-border);
      border-radius: 12px;
      background: #fff;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
    }
    .burger span {
      display: block; width: 18px; height: 2px;
      background: var(--c-ink); border-radius: 2px;
    }
    .drawer {
      position: fixed; inset: 0 0 0 auto;
      width: min(84vw, 360px);
      background: #fff;
      z-index: 80;
      transform: translateX(100%);
      transition: transform .28s ease;
      box-shadow: -12px 0 40px rgba(4,47,46,.16);
      padding: 24px 20px 40px;
      overflow-y: auto;
    }
    .drawer.open { transform: translateX(0); }
    .drawer-mask {
      position: fixed; inset: 0;
      background: rgba(4,47,46,.46);
      z-index: 70;
      opacity: 0; pointer-events: none;
      transition: opacity .28s ease;
    }
    .drawer-mask.show { opacity: 1; pointer-events: auto; }
    .drawer a {
      display: flex; align-items: center;
      min-height: 48px;
      padding: 0 12px;
      border-radius: 12px;
      color: var(--c-slate);
      font-weight: 500;
    }
    .drawer a:hover, .drawer a.active {
      background: var(--c-fog);
      color: var(--c-primary-dark);
      box-shadow: inset 3px 0 0 var(--c-primary);
    }
    .hero {
      position: relative;
      min-height: 640px;
      overflow: hidden;
      background: var(--c-ink);
    }
    .hero-track { position: relative; min-height: 640px; }
    .hero-slide {
      position: absolute; inset: 0;
      opacity: 0;
      transition: opacity .8s ease;
      background-size: cover;
      background-position: center;
    }
    .hero-slide.active { opacity: 1; z-index: 1; }
    .hero-slide::after {
      content: "";
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(4,47,46,.88) 0%, rgba(17,94,89,.72) 42%, rgba(15,118,110,.28) 100%),
                  linear-gradient(180deg, rgba(4,47,46,.2) 0%, rgba(4,47,46,.55) 100%);
    }
    .hero-content {
      position: relative; z-index: 2;
      padding: 72px 0 88px;
      color: #F0FDFA;
      max-width: 760px;
    }
    .brand-kicker {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 13px; font-weight: 600; letter-spacing: .08em;
      color: var(--c-mint);
      margin-bottom: 14px;
    }
    .hero h1, .hero .slide-title {
      font-size: 42px;
      color: #fff;
      margin-bottom: 16px;
      font-weight: 700;
    }
    .hero-lead {
      font-size: 16px;
      line-height: 1.85;
      color: #E6FFFB;
      margin-bottom: 24px;
      max-width: 680px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
    .badge-data {
      display: inline-flex;
      align-items: baseline;
      gap: 6px;
      padding: 8px 14px;
      border-radius: 999px;
      background: rgba(240,253,250,.12);
      border: 1px solid rgba(94,234,212,.45);
      color: #fff;
      backdrop-filter: blur(6px);
    }
    .badge-data .num {
      font-variant-numeric: tabular-nums;
      font-weight: 700;
      font-size: 22px;
      color: var(--c-mint);
      line-height: 1;
    }
    .badge-data .unit { font-size: 12px; opacity: .9; }
    .region-row, .near-row {
      display: flex; flex-wrap: wrap; gap: 8px;
      margin-top: 18px;
    }
    .chip {
      display: inline-flex; align-items: center;
      min-height: 36px;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 13px;
      border: 1px solid rgba(94,234,212,.35);
      background: rgba(4,47,46,.35);
      color: #F0FDFA;
    }
    .chip.near {
      background: rgba(217,119,6,.18);
      border-color: rgba(217,119,6,.45);
    }
    .hero-ctrl {
      position: absolute; z-index: 3;
      bottom: 24px; right: 4%;
      display: flex; align-items: center; gap: 10px;
    }
    .hero-btn {
      width: 44px; height: 44px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,.4);
      background: rgba(4,47,46,.4);
      color: #fff;
      display: grid; place-items: center;
    }
    .hero-btn:hover { background: rgba(15,118,110,.8); }
    .dots { display: flex; gap: 8px; }
    .dots button {
      width: 12px; height: 12px;
      border-radius: 50%;
      border: 0;
      background: rgba(255,255,255,.4);
    }
    .dots button.on { background: var(--c-mint); transform: scale(1.15); }
    section { position: relative; }
    .sec {
      padding: var(--space-section) 0;
    }
    .sec-fog { background: var(--c-fog); }
    .sec-white { background: #fff; }
    .sec-head { margin-bottom: 28px; }
    .sec-head h2 {
      font-size: 30px;
      margin-bottom: 14px;
    }
    .sec-head p {
      color: var(--c-text-muted);
      max-width: 760px;
      font-size: 16px;
    }
    .eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--c-primary);
      letter-spacing: .08em;
      margin-bottom: 8px;
    }
    .card {
      background: var(--grad-card);
      border: 1px solid var(--c-border);
      border-radius: var(--radius-card);
      box-shadow: var(--c-shadow);
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--c-shadow-hover);
      border-color: rgba(94,234,212,.7);
    }
    .pain-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 28px;
      align-items: stretch;
    }
    .pain-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .pain-item { padding: 22px; }
    .pain-item h3 { font-size: 20px; margin-bottom: 8px; }
    .pain-item p { font-size: 14px; color: var(--c-text-muted); }
    .split-75 {
      display: grid;
      grid-template-columns: 7fr 5fr;
      gap: 32px;
      align-items: center;
    }
    .media-frame {
      border-radius: 28px;
      overflow: hidden;
      box-shadow: var(--c-shadow);
      border: 1px solid var(--c-border);
    }
    .media-frame img { width: 100%; height: 420px; object-fit: cover; }
    .check-list { margin-top: 16px; display: grid; gap: 10px; }
    .check-list li {
      padding-left: 28px;
      position: relative;
      color: var(--c-text-muted);
      font-size: 15px;
    }
    .check-list li::before {
      content: "";
      position: absolute; left: 0; top: 8px;
      width: 14px; height: 14px;
      border-radius: 50%;
      background: var(--grad-btn);
    }
    .timeline {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 14px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 4%; right: 4%; top: 28px;
      height: 2px;
      background: linear-gradient(90deg, #115E59, #5EEAD4);
      opacity: .35;
    }
    .step {
      position: relative;
      padding: 18px 16px 20px;
      background: #fff;
      border-radius: 22px;
      border: 1px solid var(--c-border);
      box-shadow: var(--c-shadow);
    }
    .step-no {
      width: 36px; height: 36px;
      border-radius: 50%;
      background: var(--grad-btn);
      color: #fff;
      display: grid; place-items: center;
      font-weight: 700;
      margin-bottom: 12px;
      position: relative; z-index: 1;
    }
    .step h3 { font-size: 17px; margin-bottom: 8px; }
    .step p { font-size: 13px; color: var(--c-text-muted); }
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .adv-card { padding: 24px; min-height: 280px; }
    .adv-card h3 { font-size: 20px; margin: 12px 0 8px; }
    .adv-card p { font-size: 14px; color: var(--c-text-muted); margin-bottom: 16px; }
    .mini-cover {
      width: 100%; height: 92px;
      object-fit: cover;
      border-radius: 16px;
    }
    .badge-soft {
      display: inline-flex;
      align-items: baseline;
      gap: 6px;
      padding: 6px 12px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid rgba(15,118,110,.2);
      color: var(--c-primary-dark);
      font-size: 13px;
    }
    .badge-soft b {
      font-size: 18px;
      font-variant-numeric: tabular-nums;
    }
    .prod-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .prod-card { overflow: hidden; }
    .prod-card img { width: 100%; height: 220px; object-fit: cover; }
    .prod-body { padding: 22px; }
    .prod-body h3 { font-size: 22px; margin-bottom: 10px; }
    .prod-body p { font-size: 14px; color: var(--c-text-muted); margin: 12px 0 16px; }
    .param-row { display: flex; flex-wrap: wrap; gap: 8px; }
    .dark-sec {
      background: linear-gradient(180deg, #042F2E 0%, #0F766E 100%);
      color: #F0FDFA;
      padding: var(--space-section) 0;
      position: relative;
      overflow: hidden;
    }
    .dark-sec::before {
      content: "";
      position: absolute; inset: 0;
      background: url('/assets/images/22588aaef98880a4.webp') center/cover no-repeat;
      opacity: .18;
    }
    .dark-wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; }
    .dark-sec h2 { color: #fff; font-size: 30px; margin-bottom: 14px; }
    .dark-sec p { color: #CCFBF1; }
    .case-slice {
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(94,234,212,.25);
      border-radius: 22px;
      padding: 18px 20px;
      margin-bottom: 14px;
    }
    .case-slice h3 { color: #fff; font-size: 18px; margin-bottom: 6px; }
    .story-alt {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-bottom: 24px;
      align-items: center;
    }
    .story-alt.reverse { direction: rtl; }
    .story-alt.reverse > * { direction: ltr; }
    .story-alt img {
      width: 100%; height: 280px; object-fit: cover;
      border-radius: 24px;
    }
    .story-copy { padding: 8px 8px 8px 12px; }
    .story-copy h3 { font-size: 22px; margin-bottom: 10px; }
    .role-tag {
      display: inline-block;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 999px;
      background: var(--c-ice);
      color: var(--c-primary-dark);
      margin-bottom: 10px;
    }
    .stat-bar {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 14px;
    }
    .stat-item {
      text-align: center;
      padding: 22px 10px;
      background: #fff;
      border-radius: 22px;
      border: 1px solid var(--c-border);
      box-shadow: var(--c-shadow);
    }
    .stat-item .n {
      display: block;
      font-size: 32px;
      font-weight: 700;
      color: var(--c-primary);
      font-variant-numeric: tabular-nums;
      line-height: 1.1;
    }
    .stat-item span { font-size: 13px; color: var(--c-text-muted); }
    .aud-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 16px;
    }
    .aud-card { padding: 0; overflow: hidden; }
    .aud-card img { width: 100%; height: 140px; object-fit: cover; }
    .aud-card div { padding: 16px 18px 20px; }
    .aud-card h3 { font-size: 18px; margin-bottom: 6px; }
    .review-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .quote-card { padding: 22px; background: #fff; }
    .quote-card p { font-size: 14px; color: var(--c-text-muted); margin: 10px 0 16px; }
    .stars { color: var(--c-amber); letter-spacing: 2px; font-size: 14px; }
    .avatar {
      width: 40px; height: 40px;
      border-radius: 50%;
      background: var(--grad-btn);
      color: #fff;
      display: grid; place-items: center;
      font-weight: 700;
      font-size: 14px;
    }
    .scene-mosaic {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      grid-template-rows: auto auto;
      gap: 16px;
    }
    .scene-tile {
      padding: 24px;
      min-height: 180px;
      color: var(--c-ink);
    }
    .scene-tile.wide { grid-row: span 2; min-height: 380px; color: #fff;
      background: linear-gradient(180deg, rgba(4,47,46,.55), rgba(15,118,110,.72)), url('/assets/images/8cb74ce89da1b897.webp') center/cover;
    }
    .scene-tile.wide h3, .scene-tile.wide p { color: #fff; }
    .quality-box {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 24px;
    }
    .q-list li {
      padding: 14px 0;
      border-bottom: 1px solid var(--c-border);
      display: flex; gap: 12px; align-items: flex-start;
    }
    .news-list { display: grid; gap: 16px; }
    .news-item {
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 18px;
      padding: 12px;
      align-items: center;
    }
    .news-item img { width: 100%; height: 140px; object-fit: cover; border-radius: 16px; }
    .news-item h3 { font-size: 20px; margin-bottom: 6px; }
    .date { font-size: 13px; color: var(--c-primary); }
    .panel {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      background: var(--c-ink);
      border-radius: 28px;
      padding: 18px;
      box-shadow: inset 0 0 0 1px rgba(94,234,212,.2);
    }
    .meter {
      padding: 16px 14px;
      border-radius: 16px;
      min-height: 110px;
    }
    .meter:nth-child(odd) { background: rgba(240,253,250,.08); }
    .meter:nth-child(even) { background: rgba(15,118,110,.35); }
    .meter .lab { font-size: 12px; color: #99F6E4; }
    .meter .val { font-size: 22px; font-weight: 700; color: #fff; margin-top: 6px; font-variant-numeric: tabular-nums; }
    .faq-item {
      background: #fff;
      border-radius: 22px;
      border: 1px solid var(--c-border);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-q {
      width: 100%;
      text-align: left;
      background: #fff;
      border: 0;
      min-height: 56px;
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      font-size: 16px;
      font-weight: 600;
      color: var(--c-ink);
    }
    .faq-q:hover { background: var(--c-fog); }
    .faq-a {
      display: none;
      padding: 0 20px 18px;
      background: var(--c-fog);
      color: var(--c-text-muted);
      font-size: 15px;
    }
    .faq-item.open .faq-a { display: block; }
    .faq-item.open .faq-q { background: var(--c-fog); }
    .pm { font-size: 22px; color: var(--c-primary); line-height: 1; }
    .cta-sec {
      background: var(--grad-brand);
      padding: var(--space-section) 0;
      color: #fff;
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      align-items: start;
    }
    .cta-sec h2 { color: #fff; font-size: 30px; margin-bottom: 14px; }
    .form-card {
      background: #fff;
      color: var(--c-text);
      border-radius: 28px;
      padding: 26px;
      box-shadow: var(--c-shadow-hover);
    }
    .form-card label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--c-slate);
    }
    .form-card .field { margin-bottom: 14px; }
    .form-card input, .form-card select {
      width: 100%;
      min-height: 46px;
      border-radius: var(--radius-input);
      border: 1px solid var(--c-border);
      padding: 10px 14px;
      background: var(--c-fog);
      color: var(--c-ink);
    }
    .form-card input:focus, .form-card select:focus {
      outline: 0;
      border-color: var(--c-primary);
      box-shadow: 0 0 0 3px rgba(15,118,110,.18);
      background: #fff;
    }
    .form-note { font-size: 13px; color: var(--c-amber); margin-bottom: 10px; }
    .form-ok {
      background: var(--c-fog);
      border: 1px solid rgba(15,118,110,.25);
      color: var(--c-primary-dark);
      padding: 12px 14px;
      border-radius: 14px;
      margin-bottom: 12px;
      font-size: 14px;
    }
    .site-footer {
      background: #042F2E;
      color: #CCFBF1;
      padding: 56px 0 24px;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr 1fr;
      gap: 28px;
      margin-bottom: 28px;
    }
    .site-footer h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
    .site-footer a { color: #CCFBF1; display: inline-block; min-height: 32px; }
    .site-footer a:hover { color: var(--c-mint); }
    .copy {
      border-top: 1px solid rgba(94,234,212,.15);
      padding-top: 16px;
      font-size: 13px;
      color: #99F6E4;
      display: flex; flex-wrap: wrap; gap: 8px 18px;
      justify-content: space-between;
    }
    body.nav-lock { overflow: hidden; }
    @media (max-width: 1280px) {
      .hero h1, .hero .slide-title { font-size: 36px; }
      .adv-grid, .prod-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 1024px) {
      .menu { display: none; }
      .burger { display: inline-flex; }
      .pain-grid, .split-75, .dark-wrap, .cta-grid, .quality-box { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr 1fr 1fr; }
      .timeline::before { display: none; }
      .adv-grid, .prod-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .stat-bar { grid-template-columns: 1fr 1fr; }
      .aud-grid, .scene-mosaic, .panel, .foot-grid { grid-template-columns: 1fr 1fr; }
      .scene-tile.wide { grid-row: auto; min-height: 240px; }
      .hero, .hero-track { min-height: 580px; }
    }
    @media (max-width: 768px) {
      :root { --space-section: 64px; }
      .topbar .hide-sm { display: none; }
      .logo-text { font-size: 16px; }
      .hero { min-height: 0; }
      .hero-track { min-height: 0; }
      .hero-slide { position: relative; height: auto; min-height: 560px; opacity: 0; }
      .hero-slide.active { opacity: 1; }
      .hero h1, .hero .slide-title { font-size: 28px; }
      .sec-head h2, .dark-sec h2, .cta-sec h2 { font-size: 24px; }
      .timeline, .adv-grid, .prod-grid, .review-grid, .stat-bar, .aud-grid, .scene-mosaic, .panel, .foot-grid, .pain-list {
        grid-template-columns: 1fr;
      }
      .story-alt, .story-alt.reverse, .news-item { grid-template-columns: 1fr; direction: ltr; }
      .media-frame img, .story-alt img { height: 220px; }
      .hero-content { padding: 48px 0 96px; }
      .hero-ctrl { left: 20px; right: auto; }
      .container { width: min(1280px, calc(100% - 28px)); }
    }
    @media (max-width: 520px) {
      .hero h1, .hero .slide-title { font-size: 26px; }
      .btn { width: 100%; }
      .hero-actions { flex-direction: column; }
      .nav-cta .btn { width: auto; padding-inline: 14px; font-size: 14px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      .hero-slide, .card, .btn { transition: none; }
    }