/* roulang page: index */
:root {
      --c-primary: #0E7A6B;
      --c-primary-deep: #0A5E53;
      --c-primary-soft: #D7EBE6;
      --c-accent: #E3943A;
      --c-accent-deep: #C67A24;
      --c-paper: #F7F3EA;
      --c-moss: #E7EEE9;
      --c-card: #FFFDF8;
      --c-ink: #1A1816;
      --c-muted: #5C574F;
      --c-line: #D8D1C4;
      --c-dark: #1E1A16;
      --c-graphite: #2A2622;
      --c-cream: #F3EBDA;
      --radius-s: 8px;
      --radius-m: 12px;
      --radius-l: 14px;
      --radius-pill: 999px;
      --shadow: 0 10px 24px rgba(30, 26, 22, 0.07);
      --shadow-hover: 0 14px 28px rgba(30, 26, 22, 0.09);
      --space-1: 8px;
      --space-2: 16px;
      --space-3: 24px;
      --space-4: 32px;
      --space-5: 48px;
      --space-6: 80px;
      --space-7: 112px;
      --fs-hero: clamp(28px, 4.2vw, 52px);
      --fs-h2: clamp(26px, 3vw, 34px);
      --fs-h3: clamp(18px, 2vw, 22px);
      --fs-body: 16px;
      --fs-aux: 13px;
      --container: 1220px;
      --nav-h: 72px;
      --z-bar: 40;
      --z-header: 80;
      --z-overlay: 90;
      --z-drawer: 100;
      --z-sticky: 70;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--c-ink);
      background:
        radial-gradient(rgba(30,26,22,0.035) 0.6px, transparent 0.7px) 0 0 / 18px 18px,
        var(--c-paper);
      font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
      font-size: var(--fs-body);
      line-height: 1.75;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--c-primary); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
    a:hover { color: var(--c-primary-deep); }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 {
      font-family: "Noto Serif SC", "Source Han Serif SC", serif;
      line-height: 1.28;
      margin: 0 0 12px;
      font-weight: 600;
    }
    p { margin: 0 0 14px; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--c-primary); outline-offset: 3px; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--c-primary);
      font-size: 13px;
      letter-spacing: .12em;
      margin-bottom: 12px;
    }
    .kicker::before {
      content: "";
      width: 28px;
      height: 1px;
      background: var(--c-primary);
    }
    .section {
      padding: 96px 0;
      position: relative;
    }
    .section-head { max-width: 720px; margin-bottom: 36px; }
    .section-head p, .lead {
      color: var(--c-muted);
      font-size: 16px;
      max-width: 42em;
    }
    .section--moss { background: var(--c-moss); }
    .section--card { background: var(--c-card); }
    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 6px;
      background: var(--c-primary-soft);
      color: var(--c-primary-deep);
      font-size: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 22px;
      border-radius: var(--radius-pill);
      border: 1px solid transparent;
      font-size: 15px;
      font-weight: 600;
      text-decoration: none;
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(1px); }
    .btn--accent {
      background: var(--c-accent);
      color: #fff;
      box-shadow: 0 8px 16px rgba(227,148,58,.22);
    }
    .btn--accent:hover { background: var(--c-accent-deep); color: #fff; }
    .btn--primary {
      background: var(--c-primary);
      color: #fff;
    }
    .btn--primary:hover { background: var(--c-primary-deep); color: #fff; }
    .btn--ghost {
      background: transparent;
      color: #fff;
      border-color: rgba(255,255,255,.55);
    }
    .btn--ghost:hover { background: rgba(255,255,255,.1); color: #fff; }
    .btn--line {
      background: transparent;
      color: var(--c-primary);
      border-color: var(--c-primary);
    }
    .btn--line:hover { background: var(--c-primary-soft); color: var(--c-primary-deep); }
    .btn[disabled] { opacity: .45; pointer-events: none; }
    .site-header { position: relative; z-index: var(--z-header); }
    .topbar {
      background: var(--c-graphite);
      color: #E8E2D6;
      font-size: 13px;
    }
    .topbar .container {
      min-height: 42px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .topbar a { color: #F4EFE4; }
    .topbar a:hover { color: var(--c-accent); }
    .topbar-right, .topbar-left { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
    .topbar .btn { min-height: 32px; padding: 0 14px; font-size: 13px; }
    .nav-main {
      position: sticky;
      top: 0;
      background: rgba(247,243,234,.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--c-line);
      z-index: var(--z-header);
    }
    .nav-main .container {
      min-height: var(--nav-h);
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 20px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--c-ink);
      font-family: "Noto Serif SC", serif;
      font-size: 18px;
      font-weight: 700;
      white-space: nowrap;
    }
    .logo:hover { color: var(--c-primary); }
    .logo-mark {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--c-primary);
      color: #fff;
      display: grid;
      place-items: center;
      flex-shrink: 0;
    }
    .menu {
      display: flex;
      justify-content: center;
      gap: 6px;
    }
    .menu a {
      position: relative;
      color: var(--c-ink);
      padding: 10px 12px;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      font-size: 15px;
    }
    .menu a::after {
      content: "";
      position: absolute;
      left: 12px;
      right: 12px;
      bottom: 6px;
      height: 2px;
      background: var(--c-primary);
      transform: scaleX(0);
      transition: transform .2s ease;
    }
    .menu a:hover, .menu a.is-active { color: var(--c-primary); }
    .menu a.is-active::after, .menu a:hover::after { transform: scaleX(1); }
    .nav-cta { justify-self: end; }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--c-line);
      background: var(--c-card);
      border-radius: 10px;
      padding: 0;
    }
    .menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--c-ink);
      margin: 0 auto;
      position: relative;
    }
    .menu-toggle span::before, .menu-toggle span::after {
      content: "";
      position: absolute;
      left: 0;
    }
    .menu-toggle span::before { top: -6px; }
    .menu-toggle span::after { top: 6px; }
    .nav-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(30,26,22,.46);
      z-index: var(--z-overlay);
    }
    .nav-overlay.is-open, .drawer.is-open { display: block; }
    .drawer {
      display: none;
      position: fixed;
      top: 0;
      right: 0;
      width: min(86vw, 360px);
      height: 100%;
      background: var(--c-card);
      z-index: var(--z-drawer);
      padding: 24px;
      box-shadow: -16px 0 40px rgba(0,0,0,.12);
    }
    .drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
    .drawer-close {
      width: 44px; height: 44px; border: 0; background: var(--c-moss); border-radius: 10px; font-size: 22px;
    }
    .drawer a {
      display: flex;
      align-items: center;
      min-height: 48px;
      padding: 0 8px;
      border-bottom: 1px solid var(--c-line);
      color: var(--c-ink);
    }
    .hero {
      position: relative;
      min-height: 640px;
      overflow: hidden;
      background: var(--c-dark);
      color: #fff;
    }
    .hero-slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      visibility: hidden;
      transition: opacity .6s ease;
    }
    .hero-slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
    .hero-slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: saturate(.9);
    }
    .hero-mask {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(30,26,22,.72) 0%, rgba(30,26,22,.42) 48%, rgba(30,26,22,.2) 100%);
    }
    .hero-slash {
      position: absolute;
      inset: 0 auto 0 0;
      width: min(78%, 920px);
      clip-path: polygon(0 0, 86% 0, 68% 100%, 0 100%);
      background: linear-gradient(135deg, rgba(14,122,107,.92), rgba(30,26,22,.78));
      display: flex;
      align-items: center;
    }
    .hero-copy {
      width: min(100% - 48px, 640px);
      margin-left: max(20px, calc((100vw - var(--container)) / 2));
      padding: 48px 0 88px;
    }
    .hero-brand {
      display: inline-block;
      margin-bottom: 14px;
      padding: 4px 12px;
      border: 1px solid rgba(255,255,255,.28);
      border-radius: var(--radius-pill);
      font-size: 13px;
      letter-spacing: .08em;
    }
    .hero h1, .hero-title {
      font-size: var(--fs-hero);
      margin-bottom: 18px;
    }
    .hero-copy p {
      max-width: 38em;
      color: #EDE6D8;
      font-size: 16px;
      line-height: 1.8;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
    .hero-controls {
      position: absolute;
      left: 0; right: 0; bottom: 24px;
      z-index: 3;
    }
    .hero-controls .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .dots { display: flex; gap: 8px; }
    .dots button, .arrow {
      width: 44px; height: 44px;
      border: 0;
      border-radius: 50%;
      background: rgba(255,255,255,.14);
      color: #fff;
    }
    .dots button {
      width: 12px; height: 12px; min-width: 12px;
      border-radius: 50%;
    }
    .dots button.is-on { background: var(--c-accent); width: 28px; border-radius: 8px; }
    .arrows { display: flex; gap: 8px; }
    .selling {
      background: var(--c-card);
      border-bottom: 1px solid var(--c-line);
      padding: 0;
    }
    .selling-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
    }
    .selling-item {
      padding: 28px 28px 30px;
      border-right: 1px solid var(--c-line);
    }
    .selling-item:last-child { border-right: 0; }
    .selling-item h2 { font-size: 22px; margin-bottom: 8px; }
    .selling-item p { margin: 0; color: var(--c-muted); }
    .catalog-list {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 28px;
      align-items: stretch;
    }
    .catalog-feature {
      position: relative;
      min-height: 420px;
      border-radius: var(--radius-l);
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .catalog-feature img, .media img { width: 100%; height: 100%; object-fit: cover; }
    .catalog-feature figcaption, .cover-cap {
      position: absolute;
      left: 0; right: 0; bottom: 0;
      padding: 22px;
      background: linear-gradient(transparent, rgba(30,26,22,.78));
      color: #fff;
    }
    .catalog-side { display: grid; gap: 16px; }
    .catalog-row {
      display: grid;
      grid-template-columns: 132px 1fr;
      gap: 16px;
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius-m);
      overflow: hidden;
      min-height: 128px;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .catalog-row:hover { transform: translateY(-3px); border-color: var(--c-primary); box-shadow: var(--shadow); }
    .catalog-row img { width: 132px; height: 100%; object-fit: cover; }
    .catalog-row div { padding: 14px 16px 14px 0; }
    .catalog-row h3 { font-size: 18px; }
    .split {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 48px;
      align-items: center;
    }
    .split--reverse { grid-template-columns: 1.08fr .92fr; }
    .media {
      border-radius: var(--radius-l);
      overflow: hidden;
      min-height: 360px;
      box-shadow: var(--shadow);
      position: relative;
    }
    .media img { min-height: 360px; object-fit: cover; }
    .facts {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 18px;
    }
    .facts li {
      background: var(--c-moss);
      border-radius: var(--radius-s);
      padding: 12px 14px;
      font-size: 14px;
    }
    .scene-track {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }
    .scene-card {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius-m);
      padding: 22px;
      min-height: 100%;
      box-shadow: var(--shadow);
    }
    .scene-card h3 { font-size: 20px; }
    .scene-card ol { padding-left: 18px; color: var(--c-muted); }
    .scene-card li { margin: 6px 0; list-style: decimal; }
    .flow {
      margin-top: 28px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }
    .flow li {
      background: var(--c-primary-soft);
      border-radius: var(--radius-m);
      padding: 16px;
      position: relative;
    }
    .flow strong { display: block; color: var(--c-primary-deep); font-size: 13px; }
    .ability-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .ability {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius-m);
      padding: 24px;
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 16px;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .ability:hover { transform: translateY(-3px); border-color: var(--c-primary); box-shadow: var(--shadow-hover); }
    .ability svg { color: var(--c-primary); }
    .course-grid {
      display: grid;
      grid-template-columns: 1.35fr .82fr .82fr;
      gap: 20px;
    }
    .course {
      background: var(--c-card);
      border-radius: var(--radius-l);
      overflow: hidden;
      border: 1px solid var(--c-line);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      min-height: 100%;
      transition: transform .2s ease, border-color .2s ease;
    }
    .course:hover { transform: translateY(-4px); border-color: var(--c-primary); }
    .course img { height: 220px; width: 100%; object-fit: cover; }
    .course--wide img { height: 280px; }
    .course-body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .meta-line { display: flex; flex-wrap: wrap; gap: 8px; color: var(--c-muted); font-size: 13px; }
    .path {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 32px;
    }
    .timeline { border-left: 2px solid var(--c-primary-soft); padding-left: 22px; }
    .timeline li { position: relative; padding: 0 0 26px; }
    .timeline li::before {
      content: "";
      width: 12px; height: 12px;
      border-radius: 50%;
      background: var(--c-accent);
      position: absolute;
      left: -29px;
      top: 6px;
      box-shadow: 0 0 0 4px var(--c-primary-soft);
    }
    .topic-index {
      display: grid;
      gap: 10px;
    }
    .topic-index a {
      display: flex;
      justify-content: space-between;
      align-items: center;
      min-height: 48px;
      padding: 8px 14px;
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: 10px;
      color: var(--c-ink);
    }
    .topic-index a:hover { border-color: var(--c-primary); color: var(--c-primary); }
    .dark {
      background: var(--c-dark);
      color: #F4EFE6;
    }
    .dark .section-head p { color: #C9C1B4; }
    .dark-grid {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 28px;
    }
    .idea { background: var(--c-graphite); border-radius: var(--radius-l); padding: 28px; }
    .idea li { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.08); color: #D8D0C3; }
    .slices { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .slice {
      position: relative;
      min-height: 210px;
      border-radius: var(--radius-m);
      overflow: hidden;
    }
    .slice img { width: 100%; height: 100%; object-fit: cover; min-height: 210px; }
    .slice span {
      position: absolute; left: 0; right: 0; bottom: 0;
      padding: 16px;
      background: linear-gradient(transparent, rgba(0,0,0,.72));
      font-size: 14px;
    }
    .compare-wrap {
      overflow: auto;
      border: 1px solid var(--c-line);
      border-radius: var(--radius-l);
      background: var(--c-card);
    }
    table {
      width: 100%;
      border-collapse: collapse;
      min-width: 680px;
    }
    th, td {
      padding: 16px 18px;
      text-align: left;
      border-bottom: 1px solid var(--c-line);
      vertical-align: top;
    }
    th { background: var(--c-moss); font-family: "Noto Serif SC", serif; }
    td:nth-child(3), th:nth-child(3) { background: rgba(14,122,107,.06); }
    .stories { display: grid; gap: 28px; }
    .story {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 28px;
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius-l);
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .story:nth-child(even) { grid-template-columns: 1fr 280px; }
    .story:nth-child(even) img { order: 2; }
    .story img { width: 100%; height: 100%; object-fit: cover; min-height: 220px; }
    .story div { padding: 24px 24px 24px 8px; }
    .story:nth-child(even) div { padding: 24px 8px 24px 24px; }
    .stats {
      background: var(--c-primary);
      color: #fff;
      padding: 42px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .stat strong {
      display: block;
      font-family: "Noto Serif SC", serif;
      font-size: 30px;
      line-height: 1.2;
    }
    .stat span { font-size: 13px; color: #E7F4F1; }
    .faculty-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
    }
    .certs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .certs li, .mentor {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius-m);
      padding: 16px;
    }
    .mentors { display: grid; gap: 12px; }
    .review-track {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .review {
      background: var(--c-card);
      border-radius: var(--radius-m);
      padding: 18px;
      border: 1px solid var(--c-line);
      min-height: 210px;
    }
    .review header { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 10px; font-size: 13px; color: var(--c-muted); }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .news {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius-m);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100%;
      transition: transform .2s ease, border-color .2s ease;
    }
    .news:hover { transform: translateY(-3px); border-color: var(--c-primary); }
    .news img { height: 150px; object-fit: cover; }
    .news div { padding: 14px 16px 18px; }
    .news time { color: var(--c-muted); font-size: 12px; }
    .share-bar {
      margin-top: 28px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      background: var(--c-moss);
      border-radius: var(--radius-m);
      padding: 16px;
    }
    .faq-list { display: grid; gap: 10px; }
    .faq-item {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius-m);
    }
    .faq-item button {
      width: 100%;
      text-align: left;
      background: none;
      border: 0;
      min-height: 56px;
      padding: 14px 18px;
      font-size: 16px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      gap: 12px;
    }
    .faq-item .ans { display: none; padding: 0 18px 16px; color: var(--c-muted); }
    .faq-item.is-open .ans { display: block; }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 12px;
    }
    .guarantee-grid a {
      display: block;
      background: var(--c-graphite);
      color: #F3EDE1;
      border-radius: var(--radius-m);
      padding: 18px;
      min-height: 132px;
    }
    .guarantee-grid a:hover { color: #fff; background: #352F29; }
    .enroll {
      background:
        linear-gradient(120deg, rgba(14,122,107,.88), rgba(30,26,22,.84)),
        url("/assets/images/973cc52a90fc85c4.webp") center/cover;
      color: #fff;
    }
    .enroll-grid {
      display: grid;
      grid-template-columns: 1fr .9fr;
      gap: 32px;
      align-items: start;
    }
    .form {
      background: var(--c-card);
      color: var(--c-ink);
      border-radius: var(--radius-l);
      padding: 24px;
    }
    .form label { display: block; font-size: 14px; margin: 10px 0 6px; }
    .form input, .form select, .form textarea {
      width: 100%;
      min-height: 44px;
      border: 1px solid var(--c-line);
      border-radius: 10px;
      padding: 8px 12px;
      background: #fff;
    }
    .form textarea { min-height: 96px; resize: vertical; }
    .form input:focus, .form select:focus, .form textarea:focus {
      border-color: var(--c-primary);
      outline: none;
      box-shadow: 0 0 0 3px rgba(14,122,107,.15);
    }
    .form .is-error { border-color: #B42318; }
    .form-note { color: var(--c-muted); font-size: 13px; margin-top: 8px; }
    .alert {
      background: var(--c-primary-soft);
      color: var(--c-primary-deep);
      border-radius: 10px;
      padding: 10px 12px;
      margin-bottom: 10px;
    }
    .alert--err { background: #F8D7DA; color: #7A1F1A; }
    .site-footer {
      background: var(--c-dark);
      color: #D8D0C3;
      padding: 56px 0 28px;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr .8fr .9fr .8fr;
      gap: 28px;
      margin-bottom: 28px;
    }
    .site-footer a { color: #F4EFE6; }
    .site-footer h3 { color: #fff; font-size: 16px; }
    .foot-copy {
      border-top: 1px solid rgba(255,255,255,.08);
      padding-top: 16px;
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    .sticky-cta {
      position: fixed;
      left: 0; right: 0; bottom: 0;
      background: rgba(30,26,22,.94);
      color: #fff;
      z-index: var(--z-sticky);
      transform: translateY(110%);
      transition: transform .25s ease;
      padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
    }
    .sticky-cta.is-show { transform: translateY(0); }
    .sticky-cta .container { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
    @media (max-width: 1280px) {
      .course-grid { grid-template-columns: 1fr 1fr; }
      .course--wide { grid-column: 1 / -1; }
      .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
      .news-grid, .review-track { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 1024px) {
      .nav-main .container { grid-template-columns: auto auto auto; }
      .menu, .nav-cta { display: none; }
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; justify-self: end; }
      .hero { min-height: 560px; }
      .hero-slash { width: 92%; clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%); }
      .split, .split--reverse, .catalog-list, .path, .dark-grid, .faculty-grid, .enroll-grid { grid-template-columns: 1fr; }
      .scene-track, .flow, .guarantee-grid { grid-template-columns: 1fr 1fr; }
      .story, .story:nth-child(even) { grid-template-columns: 1fr; }
      .story img, .story:nth-child(even) img { order: 0; min-height: 200px; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .topbar .container { justify-content: space-between; }
      .topbar-left span, .topbar-right .mail, .topbar .btn { display: none; }
      .selling-grid, .ability-grid, .course-grid, .slices, .news-grid, .review-track, .facts, .certs { grid-template-columns: 1fr; }
      .selling-item { border-right: 0; border-bottom: 1px solid var(--c-line); }
      .catalog-row { grid-template-columns: 96px 1fr; }
      .scene-track, .flow, .guarantee-grid, .stats-grid { grid-template-columns: 1fr 1fr; }
      .hero-copy { margin-left: 20px; width: calc(100% - 40px); }
      .section { padding: 72px 0; }
      .sticky-cta p { display: none; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, var(--container)); }
      .scene-track, .flow, .guarantee-grid, .stats-grid, .foot-grid { grid-template-columns: 1fr; }
      .hero { min-height: 620px; }
      .hero-actions .btn { width: 100%; }
      .arrows { display: none; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }