:root {
      /* Brand Core Colors */
      --brand-accent: #F26122; /* Aerospace Orange */
      --brand-accent-glow: rgba(242, 97, 34, 0.15);

      /* Dark Theme Architecture */
      --bg-void: #050505;     /* Purest dark background */
      --surface-1: #101012;   /* Elevated cards */
      --surface-2: #1A1A1E;   /* Borders, inputs, subtle dividers */
      --surface-3: #25252A;   /* Hover states */

      /* Text Colors */
      --text-primary: #FFFFFF;
      --text-secondary: #A0A0A5;
      --text-tertiary: #606065;

      /* Typography */
      --font-en: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
      --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

      --max-width: 1200px;
      --sidebar-width: 260px;
      --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
      --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
      --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html {
      scroll-behavior: smooth;
      scroll-padding-top: 96px;
      overflow-x: hidden;
    }

    body {
      font-family: var(--font-cn);
      background-color: var(--bg-void);
      color: var(--text-primary);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      display: flex;
    }

    body.nav-open {
      overflow: hidden;
    }

    /* Subtle Film Grain Noise for SaaS Premium Texture */
    body::before {
      content: "";
      position: fixed; inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");
      pointer-events: none; z-index: 50;
    }

    /* === Sidebar Navigation === */
    .sidebar-backdrop {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.56);
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transition: opacity 0.28s ease, visibility 0.28s ease;
      z-index: 90;
    }

    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 14px 24px;
      background: rgba(5, 5, 5, 0.82);
      border-bottom: 1px solid rgba(255,255,255,0.06);
      backdrop-filter: blur(18px);
      z-index: 110;
    }

    .mobile-brand {
      display: inline-flex;
      align-items: center;
      min-width: 0;
      color: var(--text-primary);
      text-decoration: none;
    }

    .mobile-brand-lockup {
      display: block;
      width: 118px;
      height: auto;
    }

    .mobile-nav-toggle,
    .sidebar-close {
      appearance: none;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.03);
      color: var(--text-primary);
      border-radius: 999px;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .mobile-nav-toggle {
      width: 48px;
      height: 48px;
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      flex-shrink: 0;
    }

    .mobile-nav-toggle span {
      width: 18px;
      height: 2px;
      border-radius: 999px;
      background: currentColor;
      transition: transform 0.24s ease, opacity 0.24s ease;
    }

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

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

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

    .sidebar {
      width: var(--sidebar-width);
      height: 100vh;
      position: fixed;
      top: 0; left: 0;
      background: var(--bg-void);
      border-right: 1px solid var(--surface-2);
      padding: 40px 0;
      display: flex;
      flex-direction: column;
      z-index: 120;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
      transition: transform 0.28s ease;
    }

    .sidebar-brand {
      padding: 0 40px;
      margin-bottom: 60px;
      position: relative;
    }

    .sidebar-brand-lockup {
      display: block;
      width: 100%;
      max-width: 172px;
      height: auto;
      margin-bottom: 14px;
    }
    .sidebar-brand-sub {
      font-size: 0.75rem;
      color: var(--text-secondary);
      line-height: 1.55;
    }

    .sidebar-close {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      position: absolute;
      top: -6px;
      right: 0;
    }

    .nav-menu {
      list-style: none;
      display: flex; flex-direction: column;
      flex: 1;
    }

    .nav-item a {
      display: block;
      padding: 12px 40px;
      color: var(--text-secondary);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 500;
      transition: all 0.2s ease;
      border-left: 2px solid transparent;
    }

    .nav-item a:hover {
      color: var(--text-primary);
      background: var(--surface-1);
    }

    .nav-item a.active {
      color: var(--brand-accent);
      border-left-color: var(--brand-accent);
      background: var(--brand-accent-glow);
    }

    .sidebar-footer {
      padding: 0 40px;
      margin-top: auto;
    }

    .btn-download {
      display: flex; align-items: center; justify-content: center; gap: 8px;
      width: 100%; padding: 14px 0;
      background: var(--brand-accent); color: var(--text-primary);
      border-radius: 8px; font-weight: 700; font-size: 0.9rem;
      text-decoration: none; transition: background 0.2s;
    }
    .btn-download:hover { background: #D9541B; }

    /* === Main Content Area === */
    .main-content {
      margin-left: var(--sidebar-width);
      flex: 1;
      position: relative;
      z-index: 1;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 clamp(24px, 4vw, 60px);
    }

    /* === Hero Section === */
    .hero {
      min-height: 100vh;
      display: flex; flex-direction: column;
      justify-content: center; align-items: flex-start;
      position: relative;
      padding-top: 60px;
    }

    .hero::after {
      content: ''; position: absolute;
      width: 600px; height: 600px;
      background: var(--brand-accent);
      filter: blur(200px); opacity: 0.12;
      z-index: -1; top: 50%; right: 10%;
      transform: translateY(-50%);
      border-radius: 50%;
    }

    .hero-logo-stage {
      width: 100%; max-width: 500px;
      margin-bottom: 40px;
    }
    .hero-lockup-image {
      display: block;
      width: min(100%, 480px);
      height: auto;
    }

    .hero-title {
      font-family: var(--font-en);
      font-size: clamp(3.5rem, 8vw, 6.5rem);
      font-weight: 900; letter-spacing: -0.04em;
      line-height: 1.05; margin-bottom: 24px;
    }

    .hero-title span { color: var(--brand-accent); }

    .hero-subtitle {
      font-size: 1.15rem; color: var(--text-secondary);
      line-height: 1.8; max-width: 680px;
      font-weight: 400; margin-bottom: 40px;
    }
    .hero-subtitle strong { color: var(--text-primary); font-weight: 600; }
    .hero-pills,
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .hero-pills {
      margin-bottom: 20px;
    }
    .hero-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 14px;
      border-radius: 999px;
      border: 1px solid var(--surface-2);
      background: rgba(255,255,255,0.03);
      color: var(--text-secondary);
      font-size: 0.78rem;
      letter-spacing: 0.06em;
    }
    .hero-actions {
      margin-bottom: 18px;
      gap: 16px;
    }
    .hero-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 24px;
      border-radius: 999px;
      border: 1px solid var(--surface-2);
      color: var(--text-primary);
      text-decoration: none;
      font-weight: 600;
      background: transparent;
      transition: all 0.3s ease;
    }
    .hero-link:hover {
      background: var(--surface-2);
      transform: translateY(-1px);
    }
    .hero-link-primary {
      background: var(--brand-accent);
      border-color: var(--brand-accent);
      color: var(--text-primary);
      font-weight: 700;
      box-shadow: 0 4px 20px rgba(242, 97, 34, 0.2);
    }
    .hero-link-primary:hover {
      background: #D9541B;
      border-color: #D9541B;
      box-shadow: 0 6px 24px rgba(242, 97, 34, 0.3);
    }
    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      color: var(--text-tertiary);
      font-size: 0.9rem;
    }
    .hero-meta a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    .hero-meta a:hover {
      color: var(--text-primary);
    }

    /* === Section General === */
    section { padding: 120px 0; border-bottom: 1px solid var(--surface-2); }

    .section-header { margin-bottom: 60px; }

    .section-tag {
      font-family: var(--font-en);
      font-size: 0.85rem; font-weight: 700;
      color: var(--brand-accent); letter-spacing: 0.15em;
      text-transform: uppercase; margin-bottom: 16px;
      display: flex; align-items: center; gap: 16px;
    }
    .section-tag::after { content: ''; height: 1px; width: 60px; background: var(--brand-accent); opacity: 0.5; }

    .section-title {
      font-size: 2.5rem; font-weight: 700;
      letter-spacing: -0.02em; margin-bottom: 20px;
    }

    .section-desc {
      font-size: 1.1rem; color: var(--text-secondary);
      max-width: 800px; line-height: 1.8;
    }
    .section-utility {
      margin-top: 22px;
    }
    .info-button {
      appearance: none;
      border: 1px solid var(--surface-2);
      background: rgba(255,255,255,0.03);
      color: var(--text-primary);
      padding: 10px 16px;
      border-radius: 999px;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .info-button:hover {
      border-color: var(--brand-accent);
      color: var(--brand-accent);
    }

    /* === Logo System === */
    .logo-grid {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px;
    }
    .story-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }
    .story-card {
      background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
      border: 1px solid var(--surface-2);
      border-radius: 18px;
      padding: 24px;
    }
    .story-kicker {
      color: var(--brand-accent);
      font-size: 0.75rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      font-family: var(--font-en);
      margin-bottom: 12px;
    }
    .story-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .story-copy {
      color: var(--text-secondary);
      font-size: 0.92rem;
      line-height: 1.75;
    }

    .card {
      background: var(--surface-1);
      border: 1px solid var(--surface-2);
      border-radius: 20px; overflow: hidden;
      display: flex; flex-direction: column;
    }

    .card-stage {
      padding: 60px; display: flex;
      justify-content: center; align-items: center;
      border-bottom: 1px solid var(--surface-2);
      height: 320px; position: relative;
    }

    .card-stage.pattern-bg {
      background-image: radial-gradient(var(--surface-3) 1px, transparent 1px);
      background-size: 20px 20px;
    }
    .card-asset {
      display: block;
      width: min(100%, 420px);
      height: auto;
      max-height: 100%;
      object-fit: contain;
    }
    .card-asset-stacked {
      width: min(100%, 260px);
    }
    .card-asset-mark {
      width: min(100%, 120px);
    }

    .card-info {
      padding: 30px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
    .card-desc {
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.6;
      margin-top: auto;
    }

    /* === Color System === */
    .color-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }

    .color-main-card {
      background: var(--brand-accent); border-radius: 20px;
      padding: 50px 40px; color: var(--bg-void);
      display: flex; flex-direction: column; justify-content: space-between;
      min-height: 360px;
    }

    .color-main-name { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.02em; }

    .color-values {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
      font-family: var(--font-en); font-weight: 600; font-size: 1rem;
    }
    .color-val-label { font-size: 0.75rem; text-transform: uppercase; opacity: 0.6; margin-bottom: 4px; }

    .color-neutrals { display: grid; grid-template-rows: repeat(3, 1fr); gap: 15px; }

    .neutral-row {
      border-radius: 16px; border: 1px solid var(--surface-2);
      display: flex; align-items: center; padding: 20px;
    }
    .neutral-swatch { width: 50px; height: 50px; border-radius: 10px; margin-right: 24px; }
    .neutral-info { flex: 1; }
    .neutral-name { font-weight: 700; font-size: 1.05rem; margin-bottom: 4px; }
    .neutral-hex { font-family: var(--font-en); color: var(--text-secondary); font-size: 0.85rem; }

    /* === Typography === */
    .typo-section { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }

    .typo-display {
      font-size: 6rem; line-height: 1; font-weight: 800;
      letter-spacing: -0.04em; color: var(--text-primary);
      margin-bottom: 16px;
    }

    .typo-display.cn { font-size: 5rem; font-weight: 900; }

    .typo-details {
      display: flex; justify-content: space-between;
      padding-top: 24px; border-top: 1px solid var(--surface-2);
    }

    .typo-weights {
      display: flex; flex-direction: column; gap: 8px;
      font-size: 1.25rem;
    }

    /* === Design Language & UI === */
    .ui-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }

    .ui-card {
      background: var(--surface-1); border: 1px solid var(--surface-2);
      border-radius: 20px; padding: 40px; position: relative; overflow: hidden;
    }

    /* Mockup Elements */
    .mock-header {
      display: flex; justify-content: space-between; align-items: center;
      padding-bottom: 24px; border-bottom: 1px solid var(--surface-2); margin-bottom: 24px;
    }
    .mock-nav { display: flex; gap: 16px; }
    .mock-nav-item { width: 40px; height: 6px; background: var(--surface-3); border-radius: 3px; }
    .mock-nav-item.active { background: var(--brand-accent); width: 60px; }

    .mock-badge {
      display: inline-block; padding: 6px 12px; border-radius: 20px;
      background: var(--brand-accent-glow); color: var(--brand-accent);
      font-size: 0.75rem; font-weight: 700; margin-bottom: 20px;
    }
    .mock-h1 { width: 70%; height: 32px; background: var(--text-primary); border-radius: 6px; margin-bottom: 12px; }
    .mock-h1.short { width: 40%; }
    .mock-p { width: 60%; height: 10px; background: var(--text-secondary); border-radius: 5px; margin-bottom: 10px; }

    .mock-btn {
      display: inline-flex; align-items: center; justify-content: center;
      padding: 0 24px; height: 40px; border-radius: 6px;
      background: var(--brand-accent); color: var(--text-primary);
      font-weight: 700; font-size: 0.9rem; margin-top: 24px;
    }

    .mock-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 30px; }
    .mock-stat {
      background: var(--surface-2); padding: 20px; border-radius: 12px;
      display: flex; flex-direction: column; gap: 8px;
    }
    .mock-stat-num { font-size: 2rem; font-weight: 800; color: var(--brand-accent); line-height: 1; }
    .mock-stat-label { color: var(--text-secondary); font-size: 0.8rem; }

    /* Business Card Mockup */
    .biz-card {
      width: 100%; aspect-ratio: 1.6;
      background: var(--bg-void); border: 1px solid var(--surface-2);
      border-radius: 12px; padding: 30px;
      display: flex; flex-direction: column; justify-content: space-between;
      position: relative; overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .biz-card::after {
      content: ''; position: absolute; right: -20%; bottom: -20%;
      width: 60%; aspect-ratio: 1; border-radius: 50%;
      background: var(--brand-accent); filter: blur(60px); opacity: 0.1;
    }

    /* === Posters === */
    .poster-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .poster {
      aspect-ratio: 3/4; border-radius: 20px; overflow: hidden;
      position: relative; display: flex; flex-direction: column;
      padding: 30px; border: 1px solid var(--surface-2);
    }
    .poster-1 { background: var(--bg-void); }
    .poster-2 { background: var(--brand-accent); color: var(--bg-void); border: none; }
    .poster-3 { background: var(--surface-1); }

    .poster-logo { width: 32px; margin-bottom: auto; }
    .poster-title { font-size: 2.5rem; font-weight: 900; line-height: 1; letter-spacing: -0.04em; margin-bottom: 16px; }
    .poster-graphic { position: absolute; right: -20%; bottom: -10%; width: 80%; opacity: 0.1; }
    .poster-2 .poster-graphic { opacity: 0.2; stroke: var(--bg-void); }
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
      margin-top: 30px;
    }
    .case-preview {
      min-height: 250px;
      align-items: stretch;
      padding: 26px;
    }
    .case-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
    }
    .case-tag {
      display: inline-flex;
      align-items: center;
      height: 28px;
      padding: 0 12px;
      border-radius: 999px;
      border: 1px solid var(--surface-2);
      color: var(--text-secondary);
      font-size: 0.78rem;
    }
    .mini-shell {
      width: 100%;
      height: 100%;
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,0.08);
      background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
      padding: 18px;
      display: flex;
      flex-direction: column;
      gap: 14px;
      justify-content: space-between;
    }
    .mini-topline {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }
    .mini-dots {
      display: flex;
      gap: 6px;
    }
    .mini-dots span {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--surface-3);
    }
    .mini-lines {
      display: grid;
      gap: 10px;
    }
    .mini-lines span,
    .mini-stat,
    .mini-chip {
      border-radius: 999px;
      background: rgba(255,255,255,0.12);
    }
    .mini-lines span:nth-child(1) { width: 72%; height: 18px; }
    .mini-lines span:nth-child(2) { width: 48%; height: 14px; }
    .mini-lines span:nth-child(3) { width: 88%; height: 10px; opacity: 0.6; }
    .mini-stat-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }
    .mini-stat {
      min-height: 86px;
      padding: 14px;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.06);
    }
    .mini-stat strong {
      display: block;
      color: var(--brand-accent);
      font-family: var(--font-en);
      font-size: 1.6rem;
      margin-top: 12px;
    }
    .mini-stat span {
      color: var(--text-secondary);
      font-size: 0.78rem;
    }
    .phone-shell {
      width: 170px;
      height: 240px;
      margin: 0 auto;
      border-radius: 28px;
      border: 1px solid rgba(255,255,255,0.1);
      background: linear-gradient(180deg, #0C0C10, #111116);
      padding: 18px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 18px;
      position: relative;
      overflow: hidden;
    }
    .phone-shell::before {
      content: "";
      position: absolute;
      top: 12px;
      left: 50%;
      transform: translateX(-50%);
      width: 72px;
      height: 8px;
      border-radius: 999px;
      background: rgba(255,255,255,0.08);
    }
    .phone-shell svg {
      width: 78px;
      position: relative;
      z-index: 1;
    }
    .phone-shell::after {
      content: "";
      position: absolute;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: var(--brand-accent);
      opacity: 0.15;
      filter: blur(42px);
    }
    .cover-shell,
    .stage-shell {
      width: 100%;
      height: 100%;
      border-radius: 18px;
      padding: 24px;
      border: 1px solid rgba(255,255,255,0.08);
      position: relative;
      overflow: hidden;
      background: linear-gradient(135deg, #09090C 0%, #121218 100%);
    }
    .cover-shell::after,
    .stage-shell::after {
      content: "";
      position: absolute;
      right: -10%;
      bottom: -16%;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: var(--brand-accent);
      opacity: 0.12;
      filter: blur(46px);
    }
    .cover-title,
    .stage-title {
      position: relative;
      z-index: 1;
      font-family: var(--font-en);
      font-size: 2rem;
      line-height: 0.95;
      font-weight: 900;
      letter-spacing: -0.04em;
      max-width: 8ch;
    }
    .cover-sub,
    .stage-sub {
      position: relative;
      z-index: 1;
      margin-top: 14px;
      color: var(--text-secondary);
      font-size: 0.9rem;
      max-width: 18rem;
    }

    /* === Motion Design === */
    .motion-stage {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(300px, 380px);
      min-height: 460px;
      border-radius: 28px;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.08);
      background:
        linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.02) 36%, rgba(242,97,34,0.08) 100%);
      box-shadow: 0 36px 120px rgba(0,0,0,0.34);
    }
    .motion-stage-visual {
      position: relative;
      min-height: 460px;
      overflow: hidden;
    }
    .motion-stage-canvas,
    .motion-demo-canvas {
      width: 100%;
      height: 100%;
      display: block;
    }
    .motion-stage-canvas {
      position: absolute;
      inset: 0;
    }
    .motion-stage-rings {
      position: absolute;
      inset: 0;
      pointer-events: none;
    }
    .motion-stage-rings span {
      position: absolute;
      top: 50%;
      left: 50%;
      border-radius: 50%;
      transform: translate(-50%, -50%);
      border: 1px solid rgba(255,255,255,0.08);
    }
    .motion-stage-rings span:nth-child(1) {
      width: 240px;
      height: 240px;
      animation: stage-orbit 18s linear infinite;
    }
    .motion-stage-rings span:nth-child(2) {
      width: 420px;
      height: 420px;
      border-style: dashed;
      opacity: 0.52;
      animation: stage-orbit-reverse 28s linear infinite;
    }
    .motion-stage-core {
      position: absolute;
      top: 50%;
      left: 50%;
      width: min(34vw, 220px);
      height: min(34vw, 220px);
      padding: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 32px;
      transform: translate(-50%, -50%);
      background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.12), rgba(16,16,18,0.9) 68%);
      border: 1px solid rgba(255,255,255,0.08);
      box-shadow:
        0 40px 120px rgba(0,0,0,0.46),
        0 0 0 1px rgba(255,255,255,0.02) inset;
      backdrop-filter: blur(18px);
    }
    .motion-stage-core::after {
      content: "";
      position: absolute;
      inset: 18%;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(242,97,34,0.18), transparent 72%);
      filter: blur(26px);
    }
    .motion-stage-logo {
      position: relative;
      z-index: 1;
      width: 100%;
      max-width: 124px;
      aspect-ratio: 1;
      filter: drop-shadow(0 0 20px rgba(242,97,34,0.18));
    }
    .motion-stage-copy {
      position: relative;
      padding: 42px 36px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 18px;
      border-left: 1px solid rgba(255,255,255,0.06);
      background: linear-gradient(180deg, rgba(5,5,5,0.06), rgba(5,5,5,0.28));
    }
    .motion-stage-kicker,
    .motion-principle-kicker,
    .motion-demo-kicker,
    .promo-spec-kicker {
      color: var(--brand-accent);
      font-size: 0.78rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      font-family: var(--font-en);
      font-weight: 700;
    }
    .motion-stage-title {
      font-size: 1.9rem;
      line-height: 1.12;
      font-weight: 800;
      letter-spacing: -0.03em;
    }
    .motion-stage-desc,
    .motion-principle-desc,
    .motion-demo-desc,
    .promo-spec-copy,
    .promo-player-desc,
    .promo-still-desc {
      color: var(--text-secondary);
      line-height: 1.8;
      font-size: 0.95rem;
    }
    .motion-chip-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 6px;
    }
    .motion-chip {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 14px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.04);
      color: var(--text-primary);
      font-size: 0.78rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      font-family: var(--font-en);
    }
    .motion-principles,
    .motion-demo-grid,
    .promo-still-grid {
      display: grid;
      gap: 24px;
      margin-top: 30px;
    }
    .motion-principles {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .motion-principle {
      border: 1px solid var(--surface-2);
      border-radius: 20px;
      padding: 24px;
      background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
    }
    .motion-principle-title,
    .motion-demo-title,
    .promo-player-title,
    .promo-spec-title,
    .promo-still-title {
      font-size: 1.12rem;
      line-height: 1.35;
      font-weight: 700;
      margin-top: 10px;
    }
    .motion-demo-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .motion-demo-card,
    .promo-player-card,
    .promo-spec-card,
    .promo-still-card {
      background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
      border: 1px solid var(--surface-2);
      border-radius: 24px;
      overflow: hidden;
    }
    .motion-demo-card {
      transition:
        transform 0.34s var(--ease-out-expo),
        border-color 0.34s var(--ease-out-expo),
        box-shadow 0.34s var(--ease-out-expo);
    }
    .promo-still-card {
      transition:
        transform 0.34s var(--ease-out-expo),
        border-color 0.34s var(--ease-out-expo),
        box-shadow 0.34s var(--ease-out-expo);
    }
    .motion-demo-card:hover,
    .promo-still-card:hover {
      transform: translateY(-6px);
      border-color: rgba(242,97,34,0.28);
      box-shadow: 0 24px 60px rgba(242,97,34,0.08);
    }
    .motion-demo-stage {
      position: relative;
      min-height: 240px;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      background:
        radial-gradient(circle at 50% 18%, rgba(242,97,34,0.08), transparent 58%),
        linear-gradient(180deg, rgba(255,255,255,0.02), transparent 75%);
    }
    .motion-demo-meta {
      padding: 20px 22px 24px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .motion-demo-note {
      display: inline-flex;
      align-items: center;
      margin-top: 14px;
      color: var(--text-tertiary);
      font-size: 0.8rem;
      letter-spacing: 0.04em;
    }
    .motion-mark {
      width: 138px;
      height: 138px;
    }
    .motion-mark path {
      fill: none;
      stroke-linecap: round;
      stroke-width: 14.8;
      transform-origin: center;
    }
    .motion-arc-orange {
      stroke: var(--brand-accent);
    }
    .motion-arc-white {
      stroke: var(--text-primary);
    }
    .motion-mark-draw .motion-arc-orange,
    .motion-mark-draw .motion-arc-white {
      stroke-dasharray: 154;
      stroke-dashoffset: 154;
      animation: motion-draw 2.4s var(--ease-out-expo) infinite;
    }
    .motion-mark-draw .motion-arc-white {
      animation-delay: 0.24s;
    }
    .motion-mark-breathe {
      animation: motion-breathe 3.4s var(--ease-out-quart) infinite;
      filter: drop-shadow(0 0 22px rgba(242,97,34,0.16));
    }
    .motion-mark-fade .motion-arc-orange,
    .motion-mark-fade .motion-arc-white {
      animation: motion-fade 2.8s var(--ease-out-expo) infinite;
    }
    .motion-mark-fade .motion-arc-white {
      animation-delay: 0.3s;
    }
    .motion-mark-spinner {
      animation: motion-spin 2s linear infinite;
    }
    .motion-mark-spinner .motion-arc-orange,
    .motion-mark-spinner .motion-arc-white {
      stroke-dasharray: 154;
    }
    .motion-mark-spinner .motion-arc-orange {
      stroke-dashoffset: 0;
    }
    .motion-mark-spinner .motion-arc-white {
      stroke-dashoffset: 77;
    }
    .motion-mark-glow {
      animation: motion-glow 2.2s ease-in-out infinite;
    }
    .motion-mark-bounce {
      animation: motion-bounce 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    }
    .motion-mark-rotate {
      animation: motion-spin 3s linear infinite;
    }
    .motion-section-divider {
      margin-top: 60px;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .motion-section-label {
      font-family: var(--font-en);
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--brand-accent);
      margin-bottom: 6px;
    }
    .motion-section-desc {
      font-size: 0.9rem;
      color: var(--text-secondary);
    }
    .motion-grid-stage {
      position: relative;
      width: 100%;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .motion-grid-lines {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(0deg, rgba(242,97,34,0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(242,97,34,0.08) 1px, transparent 1px);
      background-size: 40px 40px;
      animation: motion-grid-scan 3s linear infinite;
    }
    .motion-grid-logo {
      position: relative;
      z-index: 1;
      width: 80px;
      height: 80px;
      opacity: 0;
      animation: motion-fade-in 3s ease-in-out infinite;
    }
    .motion-loader-stack {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .motion-loader-ring {
      width: 58px;
      height: 58px;
      border-radius: 50%;
      border: 2px solid rgba(242,97,34,0.16);
      border-top-color: var(--brand-accent);
      animation: motion-loader-spin 1.65s linear infinite;
    }
    .motion-loader-dots {
      display: flex;
      gap: 10px;
    }
    .motion-loader-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--brand-accent);
      animation: motion-loader-dot 1.08s var(--ease-out-quart) infinite;
    }
    .motion-loader-dots span:nth-child(2) {
      animation-delay: 0.14s;
      opacity: 0.76;
    }
    .motion-loader-dots span:nth-child(3) {
      animation-delay: 0.28s;
      opacity: 0.52;
    }
    .motion-surface-preview {
      position: absolute;
      inset: 0;
      padding: 22px;
    }
    .motion-surface-preview::after {
      content: "";
      position: absolute;
      top: 14px;
      bottom: 14px;
      left: 14%;
      width: 3px;
      border-radius: 999px;
      background: linear-gradient(180deg, rgba(242,97,34,0), rgba(242,97,34,0.88), rgba(242,97,34,0));
      box-shadow: 0 0 24px rgba(242,97,34,0.35);
      animation: motion-sweep 2.8s linear infinite;
    }
    .motion-surface-preview img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,0.08);
      opacity: 0.92;
    }
    .motion-surface-hud {
      position: absolute;
      top: 38px;
      left: 38px;
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(5,5,5,0.62);
      color: var(--text-primary);
      font-size: 0.74rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      font-family: var(--font-en);
    }
    .promo-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.4fr) minmax(0, 360px);
      gap: 30px;
      align-items: start;
    }
    .promo-player-shell {
      position: relative;
      aspect-ratio: 16 / 9;
      background: #09090C;
      overflow: hidden;
    }
    .promo-player-shell video {
      width: 100%;
      height: 100%;
      display: block;
      object-fit: cover;
      background: #050505;
    }
    .promo-player-badge {
      position: absolute;
      top: 18px;
      left: 18px;
      z-index: 1;
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 14px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(5,5,5,0.62);
      color: var(--text-primary);
      font-size: 0.76rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      font-family: var(--font-en);
    }
    .promo-player-copy {
      padding: 24px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .promo-link-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 18px;
    }
    .promo-sidebar {
      display: grid;
      gap: 18px;
    }
    .promo-spec-card {
      padding: 24px;
    }
    .promo-metric-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 18px;
    }
    .promo-metric {
      min-height: 88px;
      padding: 16px 14px;
      border-radius: 16px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.06);
    }
    .promo-metric strong {
      display: block;
      color: var(--text-primary);
      font-family: var(--font-en);
      font-size: 1.18rem;
      letter-spacing: -0.02em;
    }
    .promo-metric span {
      display: inline-block;
      margin-top: 8px;
      color: var(--text-secondary);
      font-size: 0.72rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }
    .promo-spec-list {
      list-style: none;
      display: grid;
      gap: 10px;
      margin-top: 16px;
      color: var(--text-secondary);
      line-height: 1.8;
      font-size: 0.92rem;
    }
    .promo-spec-list li {
      position: relative;
      padding-left: 18px;
    }
    .promo-spec-list li::before {
      content: "";
      position: absolute;
      top: 11px;
      left: 0;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--brand-accent);
    }
    .promo-still-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .promo-still-media {
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #09090C;
    }
    .promo-still-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s var(--ease-out-expo);
    }
    .promo-still-card:hover .promo-still-media img {
      transform: scale(1.04);
    }
    .promo-still-copy {
      padding: 18px 20px 22px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }

    @keyframes stage-orbit {
      to {
        transform: translate(-50%, -50%) rotate(360deg);
      }
    }

    @keyframes stage-orbit-reverse {
      to {
        transform: translate(-50%, -50%) rotate(-360deg);
      }
    }

    @keyframes motion-draw {
      0%, 100% {
        stroke-dashoffset: 154;
        opacity: 0.26;
      }
      35%, 65% {
        stroke-dashoffset: 0;
        opacity: 1;
      }
    }

    @keyframes motion-breathe {
      0%, 100% {
        transform: scale(0.96);
        opacity: 0.88;
      }
      50% {
        transform: scale(1.06);
        opacity: 1;
      }
    }

    @keyframes motion-loader-spin {
      to {
        transform: rotate(360deg);
      }
    }

    @keyframes motion-loader-dot {
      0%, 80%, 100% {
        transform: scale(0.7);
        opacity: 0.34;
      }
      40% {
        transform: scale(1);
        opacity: 1;
      }
    }

    @keyframes motion-sweep {
      0% {
        left: 14%;
        opacity: 0;
      }
      12%, 88% {
        opacity: 1;
      }
      100% {
        left: 84%;
        opacity: 0;
      }
    }

    @keyframes motion-fade {
      0% {
        opacity: 0;
        filter: blur(8px);
      }
      50%, 100% {
        opacity: 1;
        filter: blur(0);
      }
    }

    @keyframes motion-spin {
      to {
        transform: rotate(360deg);
      }
    }

    @keyframes motion-glow {
      0%, 100% {
        filter: drop-shadow(0 0 8px rgba(242,97,34,0.3));
      }
      50% {
        filter: drop-shadow(0 0 24px rgba(242,97,34,0.8));
      }
    }

    @keyframes motion-bounce {
      0%, 100% {
        transform: scale(1) translateY(0);
      }
      50% {
        transform: scale(1.15) translateY(-8px);
      }
    }

    @keyframes motion-grid-scan {
      0% {
        transform: translateY(-40px);
      }
      100% {
        transform: translateY(0);
      }
    }

    @keyframes motion-fade-in {
      0%, 30% {
        opacity: 0;
      }
      60%, 100% {
        opacity: 1;
      }
    }

    /* === Downloads Section === */
    .download-grid {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px;
    }
    .dl-card {
      background: var(--surface-1); border: 1px solid var(--surface-2);
      border-radius: 16px; padding: 30px; display: flex; flex-direction: column;
      align-items: center; text-align: center; gap: 16px;
      transition: border-color 0.2s;
    }
    .dl-card:hover { border-color: var(--brand-accent); }
    .dl-icon { width: 48px; height: 48px; background: var(--surface-2); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--brand-accent); }
    .dl-list {
      list-style: none;
      display: grid;
      gap: 8px;
      width: 100%;
      text-align: left;
      color: var(--text-secondary);
      font-size: 0.83rem;
      line-height: 1.65;
      margin-top: -4px;
    }
    .dl-note {
      margin-top: 24px;
      color: var(--text-secondary);
      font-size: 0.92rem;
      line-height: 1.8;
    }
    .dl-note code {
      font-family: var(--font-en);
      color: var(--text-primary);
    }
    .brand-dialog {
      width: min(820px, calc(100vw - 32px));
      border: 1px solid var(--surface-2);
      border-radius: 24px;
      padding: 0;
      background: var(--surface-1);
      color: var(--text-primary);
    }
    .brand-dialog::backdrop {
      background: rgba(0,0,0,0.74);
      backdrop-filter: blur(8px);
    }
    .footer-links {
      margin-top: 14px;
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 18px;
      font-size: 0.88rem;
    }
    .footer-links a {
      color: var(--text-secondary);
      text-decoration: none;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: var(--text-primary);
    }
    .dialog-shell {
      padding: 30px;
    }
    .dialog-head {
      display: flex;
      justify-content: space-between;
      align-items: start;
      gap: 20px;
      margin-bottom: 24px;
    }
    .dialog-title {
      font-size: 1.8rem;
      font-weight: 800;
      letter-spacing: -0.03em;
    }
    .dialog-close {
      appearance: none;
      border: 1px solid var(--surface-3);
      background: transparent;
      color: var(--text-primary);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      cursor: pointer;
      font-size: 1.2rem;
    }
    .dialog-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .dialog-point {
      border: 1px solid var(--surface-2);
      border-radius: 18px;
      padding: 18px;
      background: rgba(255,255,255,0.02);
    }
    .dialog-point strong {
      display: block;
      color: var(--brand-accent);
      margin-bottom: 10px;
      font-size: 0.92rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      font-family: var(--font-en);
    }
    .dialog-point p {
      color: var(--text-secondary);
      font-size: 0.92rem;
      line-height: 1.75;
    }
    .dialog-summary {
      margin-top: 18px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .copy-prompt-shell {
      background: var(--surface-1);
      border: 1px solid var(--surface-2);
      border-radius: 16px;
      padding: 24px;
      position: relative;
    }
    .copy-prompt-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }
    .copy-prompt-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .copy-prompt-btn {
      appearance: none;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      color: var(--text-primary);
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.8rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 6px;
      transition: all 0.2s;
    }
    .copy-prompt-btn:hover {
      background: rgba(255,255,255,0.1);
      border-color: var(--brand-accent);
      color: var(--brand-accent);
    }
    .copy-prompt-btn.copied {
      background: #10B981;
      border-color: #10B981;
      color: #fff;
    }
    .copy-prompt-content {
      background: var(--bg-void);
      border: 1px solid var(--surface-2);
      border-radius: 12px;
      padding: 20px;
      font-family: var(--font-en);
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.6;
      max-height: 300px;
      overflow-y: auto;
      white-space: pre-wrap;
    }
    .copy-prompt-content::-webkit-scrollbar {
      width: 6px;
    }
    .copy-prompt-content::-webkit-scrollbar-thumb {
      background: var(--surface-3);
      border-radius: 3px;
    }
    .ui-principle-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 40px;
    }
    .ui-principle-card {
      background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
      border-top: 2px solid var(--surface-2);
      padding: 24px 0;
    }
    .ui-principle-card:hover {
      border-top-color: var(--brand-accent);
    }
    .ui-principle-num {
      font-family: var(--font-en);
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--brand-accent);
      margin-bottom: 12px;
    }
    .ui-principle-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-primary);
    }
    .ui-principle-desc {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    section,
    #home {
      scroll-margin-top: 96px;
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }

    @media (max-width: 1200px) {
      .story-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .download-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .motion-demo-grid,
      .promo-still-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 1024px) {
      body {
        display: block;
      }

      .mobile-topbar {
        display: flex;
      }

      .main-content {
        margin-left: 0;
      }

      .sidebar {
        width: min(86vw, 320px);
        padding: 28px 24px 24px;
        transform: none;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        box-shadow: 24px 0 60px rgba(0,0,0,0.45);
      }

      body.nav-open .sidebar {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
      }

      body.nav-open .sidebar-backdrop {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
      }

      .sidebar-brand {
        padding: 0 0 24px;
        margin-bottom: 16px;
        border-bottom: 1px solid var(--surface-2);
      }

      .sidebar-close {
        display: inline-flex;
      }

      .nav-menu {
        gap: 6px;
      }

      .nav-item a {
        padding: 14px 0;
        border-left: none;
        border-bottom: 1px solid transparent;
      }

      .nav-item a.active {
        border-bottom-color: var(--brand-accent);
      }

      .sidebar-footer {
        padding: 24px 0 0;
        margin-top: 24px;
        border-top: 1px solid var(--surface-2);
      }

      .hero {
        min-height: auto;
        padding-top: 48px;
        padding-bottom: 72px;
      }

      .hero::after {
        width: 420px;
        height: 420px;
        top: 18%;
        right: -12%;
        transform: none;
      }

      .section-header {
        margin-bottom: 48px;
      }

      .section-title {
        font-size: 2rem;
      }

      .logo-grid,
      .color-grid,
      .typo-section,
      .ui-grid,
      .dialog-grid,
      .promo-layout {
        grid-template-columns: 1fr;
      }

      .poster-grid,
      .ui-principle-grid,
      .motion-principles {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .motion-stage {
        grid-template-columns: 1fr;
      }

      .motion-stage-copy {
        border-left: none;
        border-top: 1px solid rgba(255,255,255,0.06);
      }

      .card-stage {
        padding: 40px;
        height: auto;
        min-height: 260px;
      }

      .mock-header,
      .copy-prompt-header,
      .dialog-head,
      .typo-details {
        gap: 16px;
      }
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }

      section {
        padding: 84px 0;
      }

      .hero {
        padding-top: 32px;
        padding-bottom: 60px;
      }

      .hero-title {
        font-size: clamp(2.6rem, 12vw, 4.25rem);
      }

      .hero-subtitle,
      .section-desc {
        font-size: 1rem;
      }

      .hero-actions {
        width: 100%;
        flex-direction: column;
      }

      .hero-link {
        width: 100%;
      }

      .hero-meta {
        flex-direction: column;
        gap: 10px;
      }

      .story-grid,
      .poster-grid,
      .case-grid,
      .download-grid,
      .dialog-grid,
      .ui-principle-grid,
      .motion-principles,
      .motion-demo-grid,
      .promo-still-grid,
      .mock-card-grid,
      .mini-stat-grid,
      .color-values,
      .promo-metric-grid {
        grid-template-columns: 1fr;
      }

      .story-card,
      .ui-card,
      .dl-card,
      .copy-prompt-shell,
      .dialog-shell {
        padding: 24px;
      }

      .card-stage,
      .cover-shell,
      .stage-shell,
      .motion-stage-copy {
        padding: 24px;
      }

      .color-main-card {
        min-height: auto;
        gap: 28px;
        padding: 36px 24px;
      }

      .neutral-row {
        align-items: flex-start;
      }

      .neutral-swatch {
        margin-right: 16px;
      }

      .typo-display {
        font-size: 4.3rem;
      }

      .typo-display.cn {
        font-size: 3.6rem;
      }

      .mock-header,
      .copy-prompt-header,
      .dialog-head,
      .typo-details {
        flex-direction: column;
        align-items: flex-start;
      }

      .poster {
        min-height: 360px;
      }

      .cover-title,
      .stage-title {
        font-size: 1.6rem;
      }

      .motion-stage,
      .motion-stage-visual {
        min-height: 380px;
      }

      .motion-stage-title {
        font-size: 1.6rem;
      }

      .motion-stage-core {
        width: 180px;
        height: 180px;
      }

      .promo-link-row {
        flex-direction: column;
      }

      .promo-link-row .hero-link {
        width: 100%;
      }
    }

    @media (max-width: 480px) {
      .mobile-topbar {
        padding: 12px 16px;
      }

      .mobile-brand-lockup {
        width: 106px;
      }

      .sidebar {
        width: 100%;
      }

      .hero-logo-stage {
        margin-bottom: 28px;
      }

      .hero-pill {
        width: 100%;
        font-size: 0.74rem;
      }

      .section-tag {
        gap: 12px;
        font-size: 0.78rem;
      }

      .section-tag::after {
        width: 36px;
      }

      .section-title {
        font-size: 1.72rem;
      }

      .poster-title,
      .color-main-name {
        font-size: 2rem;
      }

      .typo-display {
        font-size: 3.3rem;
      }

      .typo-display.cn {
        font-size: 2.9rem;
      }

      .brand-dialog {
        width: calc(100vw - 16px);
        border-radius: 20px;
      }

      .dialog-shell {
        padding: 20px;
      }

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

      .motion-stage-kicker,
      .motion-principle-kicker,
      .motion-demo-kicker,
      .promo-spec-kicker {
        font-size: 0.72rem;
      }
    }