/* ================= TOKENS ================= */
    :root {
      --brand-50: #F0F9FF;
      --brand-100: #E0F2FE;
      --brand-200: #BAE6FD;
      --brand-300: #7DD3FC;
      --brand-400: #38BDF8;
      --brand-500: #0EA5E9;
      --brand-600: #0284C7;
      --brand-700: #0369A1;
      --brand-800: #075985;
      --brand-900: #0C4A6E;

      --orange-400: #FB923C;
      --orange-500: #F97316;
      --orange-600: #EA580C;

      --violet-100: #EDE9FE;
      --violet-200: #DDD6FE;
      --violet-300: #C4B5FD;
      --violet-500: #8B5CF6;

      --pink-200: #FBCFE8;
      --pink-300: #F9A8D4;
      --rose-500: #F43F5E;

      --green-400: #4ADE80;
      --green-500: #22C55E;
      --green-600: #16A34A;

      --red-500: #EF4444;
      --red-400: #F87171;

      --ink-900: #0F172A;
      --ink-800: #1E293B;
      --ink-700: #334155;
      --ink-600: #475569;
      --ink-500: #64748B;
      --ink-400: #94A3B8;
      --ink-300: #CBD5E1;
      --ink-200: #E2E8F0;
      --ink-100: #F1F5F9;
      --ink-50: #F8FAFC;

      --font-display: 'Sora', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-ui: 'Plus Jakarta Sans', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
      --font-mono: 'JetBrains Mono', ui-monospace, monospace;

      --sh-phone: 0 1px 0 rgba(255,255,255,.6) inset, 0 30px 60px -20px rgba(15,23,42,.25), 0 60px 100px -30px rgba(14,165,233,.25);
      --sh-phone-right: 0 1px 0 rgba(255,255,255,.6) inset, 0 30px 60px -20px rgba(15,23,42,.3), 0 60px 100px -30px rgba(249,115,22,.22);
      --sh-card: 0 12px 28px -12px rgba(15,23,42,.18), 0 0 0 1px rgba(15,23,42,.04);
      --sh-cta: 0 12px 24px -10px rgba(14,165,233,.5), 0 2px 0 rgba(255,255,255,.2) inset;
    }

    /* Hero 区独立作用域（抽离自 preview/hero-v2.html） */
    /* 依赖全局: * 重置 + html/body 字体由 css/style.css 统一提供，本文件不再重复 */

    /* ================= STAGE ================= */
    .hero-section {
      position: relative;
      width: 100%;
      min-height: 100vh;
      padding: 120px 24px 120px; /* 顶部 120px 让位固定导航 navbar(72px) + 视觉缓冲 */
      overflow: hidden;
      isolation: isolate;
      font-family: var(--font-ui);
      color: var(--ink-900);
      background: #FAFCFF;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    /* layered atmosphere */
    .hero-section::before {
      content: "";
      position: absolute;
      inset: -10% -5%;
      z-index: -3;
      background:
        radial-gradient(55% 42% at 12% 18%, rgba(125,211,252,.55) 0%, transparent 60%),
        radial-gradient(40% 32% at 88% 22%, rgba(196,181,253,.52) 0%, transparent 70%),
        radial-gradient(50% 40% at 82% 78%, rgba(249,168,212,.36) 0%, transparent 70%),
        radial-gradient(42% 30% at 18% 88%, rgba(186,230,253,.58) 0%, transparent 70%),
        linear-gradient(180deg,#F0F9FF 0%, #FAFCFF 55%, #F8FAFC 100%);
    }
    .hero-section::after {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -2;
      background-image: radial-gradient(rgba(14,165,233,.14) 1px, transparent 1px);
      background-size: 32px 32px;
      mask-image: radial-gradient(ellipse 78% 65% at 50% 42%, #000 20%, transparent 85%);
      -webkit-mask-image: radial-gradient(ellipse 78% 65% at 50% 42%, #000 20%, transparent 85%);
    }

    /* decorative floating orbs */
    .orb {
      position: absolute;
      border-radius: 50%;
      filter: blur(40px);
      z-index: -1;
      pointer-events: none;
    }
    .orb-1 { width: 320px; height: 320px; left: 4%; top: 40%; background: radial-gradient(circle, rgba(14,165,233,.28), transparent 70%); animation: float 18s ease-in-out infinite; }
    .orb-2 { width: 280px; height: 280px; right: 6%; top: 32%; background: radial-gradient(circle, rgba(249,115,22,.2), transparent 70%); animation: float 22s ease-in-out infinite -4s; }
    .orb-3 { width: 220px; height: 220px; left: 42%; bottom: 8%; background: radial-gradient(circle, rgba(139,92,246,.18), transparent 70%); animation: float 20s ease-in-out infinite -8s; }
    @keyframes float {
      0%, 100% { transform: translate(0,0); }
      33% { transform: translate(30px, -20px); }
      66% { transform: translate(-20px, 30px); }
    }

    .hero-section .container { max-width: 1280px; margin: 0 auto; position: relative; padding: 0; }

    /* ================= TOP BAR (dev watermark) ================= */
    .watermark {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-family: var(--font-mono);
      font-size: 11px;
      letter-spacing: 0.08em;
      color: var(--ink-400);
      text-transform: uppercase;
    }

    /* ================= HEADLINE AREA ================= */
    .headline-wrap {
      text-align: center;
      margin: 28px auto 0;
      max-width: 920px;
      position: relative;
    }
    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 13px;
      border: 1px solid rgba(14,165,233,.18);
      border-radius: 999px;
      background: rgba(255,255,255,.62);
      box-shadow: 0 16px 34px -28px rgba(14,165,233,.75);
      font-family: var(--font-mono);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .14em;
      color: var(--brand-700);
    }
    .kicker-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--brand-500);
      box-shadow: 0 0 0 5px rgba(14,165,233,.12);
    }
    .headline {
      font-family: var(--font-display);
      font-weight: 700;
      font-size: clamp(54px, 8vw, 92px);
      line-height: .98;
      letter-spacing: -0.045em;
      margin: 18px 0 14px;
      color: var(--ink-900);
    }
    .headline .accent {
      position: relative;
      background: linear-gradient(135deg, var(--brand-700) 0%, var(--brand-500) 45%, var(--violet-500) 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .headline .accent::after {
      content: "";
      position: absolute;
      left: 0; right: 0;
      bottom: -6px;
      height: 10px;
      background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 10' preserveAspectRatio='none'><path d='M0,5 Q50,0 100,5 T200,5' stroke='%230EA5E9' stroke-width='2' fill='none' stroke-linecap='round' opacity='.35'/></svg>") no-repeat center / 100% 100%;
    }
    .headline .sparkle {
      display: inline-block;
      position: relative;
      top: -0.35em;
      margin-left: 6px;
      font-size: 0.45em;
      color: var(--orange-500);
      animation: spin 4s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    .subhead {
      font-size: clamp(22px, 3.2vw, 36px);
      line-height: 1.22;
      color: var(--ink-800);
      max-width: 720px;
      margin: 0 auto;
      font-weight: 650;
      letter-spacing: -0.025em;
    }
    .subhead-em {
      color: var(--brand-700);
      white-space: nowrap;
    }
    .subhead-break {
      display: inline;
      margin-top: 0;
      color: var(--brand-700);
      white-space: nowrap;
    }
    .hero-desc {
      padding: 18px 20px 18px 22px;
      border: 1px solid rgba(14,165,233,.14);
      border-left: 4px solid var(--brand-500);
      border-radius: 18px;
      background: rgba(255,255,255,.64);
      box-shadow: 0 18px 42px -30px rgba(15,23,42,.35);
      font-size: 15.5px;
      line-height: 1.8;
      color: var(--ink-500);
      max-width: 740px;
      margin: 18px auto 0;
    }
    .subhead .hl {
      color: var(--ink-900);
      font-weight: 600;
    }
    .subhead .chip-inline {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 2px 8px;
      margin: 0 2px;
      background: rgba(14,165,233,.1);
      color: var(--brand-700);
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      white-space: nowrap;
    }

    /* ================= CTA ROW ================= */
    .cta-row {
      display: flex;
      gap: 14px;
      justify-content: center;
      align-items: center;
      margin: 36px 0 18px;
      flex-wrap: wrap;
    }
    .hero-section .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      height: 56px;
      padding: 0 26px;
      border-radius: 14px;
      font-family: var(--font-ui);
      font-size: 15px;
      font-weight: 700;
      border: none;
      cursor: pointer;
      position: relative;
      transition: transform .2s cubic-bezier(.4,0,.2,1), box-shadow .2s;
      letter-spacing: .005em;
      text-decoration: none;
    }
    .hero-section .btn svg { width: 18px; height: 18px; }
    .hero-section .btn-primary {
      background: linear-gradient(135deg, var(--brand-500) 0%, var(--brand-600) 100%);
      color: #fff;
      box-shadow: var(--sh-cta);
    }
    .hero-section .btn-primary::before {
      content: "";
      position: absolute;
      inset: 0;
      border-radius: 14px;
      padding: 1px;
      background: linear-gradient(180deg, rgba(255,255,255,.35), rgba(255,255,255,0));
      -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }
    .hero-section .btn-primary::after {
      content: "";
      position: absolute;
      top: 4px; left: 8px; right: 8px;
      height: 40%;
      border-radius: 10px 10px 20px 20px;
      background: linear-gradient(180deg, rgba(255,255,255,.25), rgba(255,255,255,0));
      pointer-events: none;
    }
    .hero-section .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 32px -10px rgba(14,165,233,.55); }
    .hero-section .btn-primary .badge-new {
      padding: 2px 7px;
      background: rgba(255,255,255,.25);
      border-radius: 6px;
      font-family: var(--font-mono);
      font-size: 10px;
      letter-spacing: .08em;
      backdrop-filter: blur(6px);
    }

    .hero-section .btn-secondary {
      background: rgba(255,255,255,.75);
      color: var(--ink-800);
      border: 1px solid rgba(15,23,42,.1);
      backdrop-filter: blur(10px);
    }
    .hero-section .btn-secondary:hover {
      background: #fff;
      transform: translateY(-2px);
      box-shadow: 0 14px 28px -10px rgba(15,23,42,.16);
      border-color: var(--brand-300);
    }
    .hero-section .btn-secondary .pulse-dot {
      width: 8px; height: 8px;
      border-radius: 50%;
      background: var(--green-500);
      box-shadow: 0 0 0 4px rgba(34,197,94,.2);
      animation: pulseDot 1.6s ease-in-out infinite;
    }
    @keyframes pulseDot {
      0%,100% { box-shadow: 0 0 0 4px rgba(34,197,94,.2); }
      50% { box-shadow: 0 0 0 8px rgba(34,197,94,.05); }
    }

    /* ================= TRUST ROW ================= */
    .trust-row {
      display: flex;
      gap: 24px;
      justify-content: center;
      align-items: center;
      margin-top: 10px;
      font-size: 13px;
      color: var(--ink-500);
      flex-wrap: wrap;
    }
    .trust-item { display: inline-flex; align-items: center; gap: 6px; }
    .trust-item .stars { color: #F59E0B; letter-spacing: -1px; }
    .trust-item .mono { font-family: var(--font-mono); color: var(--ink-700); font-weight: 600; }
    .trust-divider { width: 4px; height: 4px; border-radius: 50%; background: var(--ink-300); }
    .avatars-mini {
      display: inline-flex;
      margin-right: 6px;
    }
    .avatars-mini span {
      width: 22px; height: 22px;
      border-radius: 50%;
      border: 2px solid #fff;
      display: inline-block;
      margin-left: -6px;
      box-shadow: 0 2px 6px rgba(0,0,0,.12);
    }
    .avatars-mini span:first-child { margin-left: 0; background: linear-gradient(135deg,#FBBF24,#F97316); }
    .avatars-mini span:nth-child(2) { background: linear-gradient(135deg,#A78BFA,#8B5CF6); }
    .avatars-mini span:nth-child(3) { background: linear-gradient(135deg,#34D399,#059669); }
    .avatars-mini span:nth-child(4) { background: linear-gradient(135deg,#F472B6,#DB2777); }

    /* ================= STAGE · PHONES ================= */
    .stage {
      position: relative;
      margin: 72px auto 0;
      max-width: 1180px;
      height: 820px;
    }

    .phone-slot {
      position: absolute;
      width: 340px;
      height: 700px;
    }
    .phone-slot.left {
      left: 18%;
      top: 40px;
    }
    .phone-slot.right {
      right: 18%;
      top: 70px;
    }

    .phone {
      position: relative;
      width: 340px;
      height: 700px;
      background: linear-gradient(175deg, #1F2937 0%, #0F172A 100%);
      border-radius: 50px;
      padding: 12px;
      transform-style: preserve-3d;
      transition: transform .4s cubic-bezier(.2,.8,.2,1);
    }
    .phone::before {
      content: "";
      position: absolute;
      inset: 0;
      border-radius: 50px;
      background: linear-gradient(135deg, rgba(255,255,255,.08), transparent 30%, transparent 70%, rgba(255,255,255,.04));
      pointer-events: none;
    }
    .phone-slot.left .phone {
      box-shadow:
        0 1px 0 rgba(255,255,255,.6) inset,
        0 30px 60px -20px rgba(15,23,42,.28),
        0 60px 100px -30px rgba(14,165,233,.3),
        0 -20px 60px -30px rgba(56,189,248,.15);
      transform: perspective(2200px) rotateY(11deg) rotateZ(-2deg);
    }
    .phone-slot.right .phone {
      box-shadow:
        0 1px 0 rgba(255,255,255,.6) inset,
        0 30px 60px -20px rgba(15,23,42,.32),
        0 60px 100px -30px rgba(249,115,22,.28),
        0 -20px 60px -30px rgba(251,146,60,.15);
      transform: perspective(2200px) rotateY(-11deg) rotateZ(2deg);
    }
    .phone-slot.left::before,
    .phone-slot.right::before {
      content: "";
      position: absolute;
      width: 420px; height: 420px;
      left: 50%; top: 50%;
      transform: translate(-50%, -50%);
      border-radius: 50%;
      z-index: -1;
      filter: blur(30px);
      pointer-events: none;
    }
    .phone-slot.left::before { background: radial-gradient(circle, rgba(14,165,233,.16), transparent 70%); }
    .phone-slot.right::before { background: radial-gradient(circle, rgba(249,115,22,.14), transparent 70%); }

    .hero-section .phone-screen {
      position: relative;
      width: 100%;
      height: 100%;
      background: var(--ink-50);
      border-radius: 38px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .phone-notch {
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 116px;
      height: 28px;
      background: #0F172A;
      border-bottom-left-radius: 18px;
      border-bottom-right-radius: 18px;
      z-index: 30;
    }
    .phone-notch::after {
      content: "";
      position: absolute;
      right: 26px;
      top: 9px;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: radial-gradient(circle at 30% 30%, #334155, #020617);
      box-shadow: 0 0 0 1px rgba(255,255,255,.08);
    }

    .status-bar {
      flex: 0 0 auto;
      height: 44px;
      padding: 0 26px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      font-weight: 600;
    }
    .status-bar .right-icons { display: inline-flex; gap: 6px; align-items: center; }
    .signal-bars { display: inline-flex; gap: 2px; }
    .signal-bars span { width: 3px; border-radius: 1px; background: currentColor; }
    .signal-bars span:nth-child(1) { height: 4px; }
    .signal-bars span:nth-child(2) { height: 6px; }
    .signal-bars span:nth-child(3) { height: 8px; }
    .signal-bars span:nth-child(4) { height: 10px; }
    .sig-label { font-family: var(--font-mono); font-size: 11px; margin-left: 2px; }
    .battery {
      width: 24px; height: 11px;
      border: 1px solid currentColor;
      border-radius: 3px;
      position: relative;
      padding: 1px;
    }
    .battery::after {
      content: "";
      position: absolute;
      right: -3px; top: 3px;
      width: 2px; height: 5px;
      background: currentColor;
      border-radius: 0 1px 1px 0;
    }
    .battery i { display: block; height: 100%; width: 78%; background: currentColor; border-radius: 1px; }

    .home-bar {
      flex: 0 0 auto;
      height: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .home-bar i {
      width: 120px; height: 4px;
      border-radius: 4px;
      background: var(--ink-300);
    }

    /* ================ LEFT PHONE (AI prep) ================ */
    .hero-section .phone-slot.left .phone-screen { color: var(--ink-900); }
    .phone-slot.left .status-bar { color: var(--ink-800); }

    .app-header {
      flex: 0 0 auto;
      padding: 6px 20px 14px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .app-logo { display: inline-flex; align-items: center; gap: 9px; }
    .logo-mark {
      width: 30px; height: 30px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--brand-400), var(--brand-700));
      color: #fff;
      display: grid; place-items: center;
      font-family: var(--font-display);
      font-weight: 800;
      font-size: 17px;
      box-shadow: 0 8px 18px -8px rgba(14,165,233,.65), 0 1px 0 rgba(255,255,255,.3) inset;
    }
    .logo-text {
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 16px;
      letter-spacing: -0.01em;
    }
    .app-header-icons { display: inline-flex; gap: 10px; }
    .icon-btn {
      width: 30px; height: 30px;
      border-radius: 10px;
      background: rgba(15,23,42,.05);
      display: grid; place-items: center;
      color: var(--ink-700);
    }
    .icon-btn svg { width: 15px; height: 15px; }

    .tabs {
      display: flex;
      align-items: center;
      gap: 4px;
      padding: 0 16px;
      margin-bottom: 14px;
      border-bottom: 1px solid var(--ink-200);
    }
    .tab {
      padding: 10px 14px;
      font-size: 14px;
      color: var(--ink-500);
      font-weight: 500;
      position: relative;
    }
    .tab.active { color: var(--ink-900); font-weight: 700; }
    .tab.active::after {
      content: "";
      position: absolute;
      left: 14px; right: 14px;
      bottom: -1px;
      height: 3px;
      border-radius: 3px 3px 0 0;
      background: linear-gradient(90deg, var(--brand-500), var(--brand-300));
    }
    .tab .tab-count {
      margin-left: 3px;
      font-family: var(--font-mono);
      font-size: 10px;
      color: var(--ink-400);
    }

    .ai-card {
      margin: 6px 16px 16px;
      background: linear-gradient(135deg, #082F49 0%, #0C4A6E 55%, #075985 100%);
      border-radius: 20px;
      padding: 18px;
      color: #fff;
      position: relative;
      overflow: hidden;
      box-shadow: 0 14px 30px -14px rgba(8,47,73,.55), 0 1px 0 rgba(255,255,255,.1) inset;
    }
    .ai-card::before {
      content: "";
      position: absolute;
      width: 200px; height: 200px;
      right: -70px; top: -90px;
      background: radial-gradient(circle, rgba(56,189,248,.55), transparent 70%);
    }
    .ai-card .ai-stars {
      position: absolute;
      pointer-events: none;
      inset: 0;
      background-image:
        radial-gradient(1.5px 1.5px at 20% 30%, rgba(186,230,253,.9), transparent 50%),
        radial-gradient(1px 1px at 60% 20%, rgba(186,230,253,.8), transparent 50%),
        radial-gradient(1.5px 1.5px at 80% 60%, rgba(186,230,253,.8), transparent 50%),
        radial-gradient(1px 1px at 30% 80%, rgba(186,230,253,.7), transparent 50%),
        radial-gradient(1px 1px at 90% 40%, rgba(186,230,253,.7), transparent 50%);
      animation: starPulse 3s ease-in-out infinite;
    }
    @keyframes starPulse { 50% { opacity: .5; } }
    .ai-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-family: var(--font-mono);
      font-size: 10px;
      letter-spacing: .18em;
      font-weight: 600;
      color: var(--brand-200);
      margin-bottom: 10px;
      text-transform: uppercase;
      position: relative;
    }
    .ai-eyebrow .spark {
      animation: sparkRotate 2s ease-in-out infinite;
    }
    @keyframes sparkRotate {
      0%, 100% { transform: scale(1) rotate(0); }
      50% { transform: scale(1.3) rotate(180deg); }
    }
    .ai-title {
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 17px;
      line-height: 1.3;
      margin-bottom: 4px;
      position: relative;
    }
    .ai-desc {
      font-size: 11px;
      color: rgba(186,230,253,.85);
      line-height: 1.5;
      margin-bottom: 14px;
      position: relative;
    }
    .ai-input-row {
      display: flex;
      gap: 8px;
      align-items: center;
      position: relative;
    }
    .ai-input {
      flex: 1;
      height: 36px;
      background: rgba(255,255,255,.1);
      border: 1px solid rgba(186,230,253,.22);
      border-radius: 10px;
      padding: 0 12px;
      font-size: 12px;
      color: rgba(224,242,254,.9);
      display: flex;
      align-items: center;
    }
    .ai-input .placeholder { color: rgba(186,230,253,.55); }
    .ai-input .cursor {
      width: 1.5px; height: 14px;
      background: var(--brand-200);
      margin-left: 4px;
      animation: cursorBlink 1s steps(1) infinite;
    }
    @keyframes cursorBlink { 50% { opacity: 0; } }
    .ai-btn {
      height: 36px;
      padding: 0 14px;
      border: none;
      border-radius: 10px;
      background: linear-gradient(135deg, #38BDF8 0%, #0EA5E9 100%);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      cursor: pointer;
      box-shadow: 0 6px 14px -4px rgba(56,189,248,.55), 0 1px 0 rgba(255,255,255,.3) inset;
      position: relative;
      overflow: hidden;
    }
    .ai-btn::after {
      content: "";
      position: absolute;
      top: 0; left: -100%;
      width: 70%; height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
      animation: shimmer 2.8s ease-in-out infinite;
    }
    @keyframes shimmer {
      100% { left: 120%; }
    }

    .list-header {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      padding: 4px 20px 10px;
    }
    .list-header h4 { font-size: 13px; font-weight: 700; color: var(--ink-800); }
    .list-header .meta { font-family: var(--font-mono); font-size: 10px; color: var(--ink-400); }

    .scripts {
      flex: 1 1 auto;
      padding: 0 16px 12px;
      display: flex;
      flex-direction: column;
      gap: 9px;
      overflow: hidden;
    }
    .script-item {
      background: #fff;
      border: 1px solid var(--ink-200);
      border-radius: 14px;
      padding: 11px 12px;
      display: grid;
      grid-template-columns: 1fr 34px;
      gap: 10px;
      align-items: center;
      box-shadow: 0 1px 0 rgba(15,23,42,.02);
      animation: slideInLeft .6s cubic-bezier(.2,.8,.2,1) backwards;
    }
    .script-item:nth-child(1) { animation-delay: .1s; }
    .script-item:nth-child(2) { animation-delay: .2s; border-color: var(--brand-200); background: linear-gradient(135deg, #F0F9FF, #fff 60%); }
    .script-item:nth-child(3) { animation-delay: .3s; }
    .script-item:nth-child(4) { animation-delay: .4s; }
    @keyframes slideInLeft {
      from { opacity: 0; transform: translateX(-8px); }
      to { opacity: 1; transform: translateX(0); }
    }

    .script-item .meta-row {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 5px;
    }
    .scene-tag {
      font-family: var(--font-mono);
      font-size: 9px;
      letter-spacing: .06em;
      text-transform: uppercase;
      padding: 3px 6px;
      border-radius: 5px;
      font-weight: 700;
    }
    .scene-warm { background: #FFEDD5; color: #C2410C; }
    .scene-product { background: #DBEAFE; color: #1D4ED8; }
    .scene-engage { background: #DCFCE7; color: #15803D; }
    .scene-discount { background: #FCE7F3; color: #BE185D; }

    .script-title {
      font-size: 13px;
      font-weight: 600;
      color: var(--ink-900);
      line-height: 1.35;
      letter-spacing: -0.005em;
    }
    .script-snippet {
      margin-top: 3px;
      font-size: 10.5px;
      color: var(--ink-500);
      line-height: 1.5;
      display: -webkit-box;
      -webkit-line-clamp: 1;
      line-clamp: 1;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .voice-btn {
      width: 34px; height: 34px;
      border-radius: 11px;
      background: linear-gradient(135deg, rgba(14,165,233,.15), rgba(56,189,248,.06));
      display: grid; place-items: center;
      color: var(--brand-600);
      position: relative;
    }
    .voice-btn.playing {
      background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
      color: #fff;
      box-shadow: 0 6px 12px -4px rgba(14,165,233,.5);
    }
    .voice-btn.playing::before {
      content: "";
      position: absolute;
      inset: -3px;
      border-radius: 13px;
      border: 1.5px solid var(--brand-300);
      opacity: .6;
      animation: wave 1.6s ease-out infinite;
    }
    .voice-btn.playing::after {
      content: "";
      position: absolute;
      inset: -6px;
      border-radius: 15px;
      border: 1.5px solid var(--brand-200);
      opacity: .4;
      animation: wave 1.6s ease-out infinite .4s;
    }
    @keyframes wave {
      0% { transform: scale(.95); opacity: .7; }
      100% { transform: scale(1.3); opacity: 0; }
    }
    .voice-btn svg { width: 14px; height: 14px; }

    /* equalizer bars on playing voice btn */
    .eq-bars { display: flex; align-items: center; gap: 2px; height: 12px; }
    .eq-bars span {
      width: 2px;
      border-radius: 1px;
      background: currentColor;
      animation: eq 1s ease-in-out infinite;
    }
    .eq-bars span:nth-child(1) { height: 40%; animation-delay: 0s; }
    .eq-bars span:nth-child(2) { height: 80%; animation-delay: .15s; }
    .eq-bars span:nth-child(3) { height: 100%; animation-delay: .3s; }
    .eq-bars span:nth-child(4) { height: 60%; animation-delay: .45s; }
    @keyframes eq {
      0%, 100% { transform: scaleY(.6); }
      50% { transform: scaleY(1); }
    }

    .bottom-actions {
      flex: 0 0 auto;
      padding: 10px 16px 10px;
      display: flex;
      gap: 10px;
      background: #fff;
      border-top: 1px solid var(--ink-200);
    }
    .ba-btn {
      flex: 1;
      height: 42px;
      border: none;
      border-radius: 12px;
      font-size: 13px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      cursor: pointer;
    }
    .ba-btn svg { width: 14px; height: 14px; }
    .ba-btn.outline {
      background: var(--ink-100);
      color: var(--ink-700);
    }
    .ba-btn.primary {
      background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
      color: #fff;
      box-shadow: 0 8px 16px -6px rgba(14,165,233,.55), 0 1px 0 rgba(255,255,255,.25) inset;
      position: relative;
      overflow: hidden;
    }

    /* ================ RIGHT PHONE (Live) ================ */
    .hero-section .phone-slot.right .phone-screen { background: #0B1220; color: #E2E8F0; }
    .phone-slot.right .status-bar { color: #E2E8F0; }

    .live-header {
      flex: 0 0 auto;
      padding: 8px 18px 14px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .live-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 10px;
      background: rgba(239,68,68,.14);
      border: 1px solid rgba(239,68,68,.4);
      border-radius: 999px;
      font-size: 11px;
      font-weight: 700;
      color: #FCA5A5;
      letter-spacing: .05em;
    }
    .live-pill .dot {
      width: 7px; height: 7px;
      border-radius: 50%;
      background: var(--red-500);
      box-shadow: 0 0 0 4px rgba(239,68,68,.22);
      animation: liveDot 1.4s ease-in-out infinite;
    }
    @keyframes liveDot {
      0%,100% { box-shadow: 0 0 0 4px rgba(239,68,68,.22); }
      50% { box-shadow: 0 0 0 9px rgba(239,68,68,.02); }
    }
    .live-meta {
      display: flex;
      gap: 10px;
      font-family: var(--font-mono);
      font-size: 11px;
      color: var(--ink-400);
    }
    .live-meta .viewers { color: var(--brand-200); }

    .stream-card {
      margin: 0 18px 14px;
      height: 200px;
      border-radius: 18px;
      position: relative;
      border: 1px solid rgba(148,163,184,.14);
      background:
        linear-gradient(180deg, rgba(11,18,32,0) 40%, rgba(11,18,32,.92) 100%),
        linear-gradient(135deg, #1E293B 0%, #334155 70%);
    }
    .stream-inner {
      position: absolute;
      inset: 0;
      border-radius: 18px;
      overflow: hidden;
    }
    .stream-inner::before {
      content: "";
      position: absolute; inset: 0;
      background:
        radial-gradient(circle at 30% 25%, rgba(56,189,248,.3), transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(249,115,22,.2), transparent 50%);
    }
    .stream-inner::after {
      content: "";
      position: absolute; inset: 0;
      background-image: linear-gradient(transparent 50%, rgba(255,255,255,.03) 50%);
      background-size: 100% 3px;
      pointer-events: none;
    }

    .stream-host {
      position: absolute;
      left: 12px; top: 12px;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 4px 10px 4px 4px;
      background: rgba(15,23,42,.72);
      border-radius: 999px;
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255,255,255,.1);
      z-index: 4;
    }
    .host-avatar {
      width: 24px; height: 24px;
      border-radius: 50%;
      background: linear-gradient(135deg, #FBBF24, #F97316);
      display: grid; place-items: center;
      color: #fff;
      font-size: 11px;
      font-weight: 800;
      position: relative;
    }
    .host-avatar::after {
      content: "";
      position: absolute;
      inset: -3px;
      border-radius: 50%;
      border: 1.5px solid rgba(251,191,36,.5);
      animation: wave 2s ease-out infinite;
    }
    .host-name { font-size: 11px; font-weight: 600; color: #fff; }

    .stream-floating-label {
      position: absolute;
      top: 14px; right: 14px;
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 4px 10px 4px 6px;
      background: rgba(15,23,42,.6);
      border-radius: 999px;
      backdrop-filter: blur(8px);
      font-size: 10px;
      font-weight: 600;
      color: #fff;
      border: 1px solid rgba(255,255,255,.08);
      z-index: 3;
    }
    .stream-floating-label .fl-dot {
      width: 8px; height: 8px;
      border-radius: 50%;
      background: #F472B6;
      box-shadow: 0 0 0 3px rgba(244,114,182,.3);
      animation: liveDot 1.8s ease-in-out infinite;
    }

    .teleprompter-floating {
      position: absolute;
      left: 14px; top: 50px;
      width: calc(100% - 28px);
      background: rgba(2,6,23,.78);
      border: 1px solid rgba(56,189,248,.35);
      backdrop-filter: blur(12px);
      border-radius: 12px;
      padding: 12px 14px 10px;
      font-size: 11.5px;
      line-height: 1.55;
      color: #E0F2FE;
      overflow: hidden;
      box-shadow: 0 10px 24px -6px rgba(0,0,0,.5), 0 0 0 1px rgba(56,189,248,.12);
      z-index: 3;
    }
    .tp-tag {
      position: absolute;
      top: -8px; left: 10px;
      padding: 2px 7px;
      background: linear-gradient(135deg, var(--brand-400), var(--brand-600));
      color: #fff;
      font-family: var(--font-mono);
      font-size: 9px;
      letter-spacing: .14em;
      border-radius: 5px;
      font-weight: 700;
      box-shadow: 0 4px 10px -4px rgba(14,165,233,.6);
    }
    .tp-text-wrap { height: 34px; max-height: 34px; overflow: hidden; position: relative; }
    .tp-scroll {
      animation: tpScroll 9s linear infinite;
    }
    @keyframes tpScroll {
      0% { transform: translateY(0); }
      20%,30% { transform: translateY(0); }
      50%,60% { transform: translateY(-18px); }
      80%,100% { transform: translateY(-36px); }
    }
    .tp-text-wrap::after {
      content: "";
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 12px;
      background: linear-gradient(180deg, transparent, rgba(2,6,23,.65));
      pointer-events: none;
    }

    .product-pop {
      position: absolute;
      left: 50%;
      bottom: 14px;
      transform: translateX(-50%);
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 10px;
      width: calc(100% - 28px);
      background: #fff;
      border-radius: 13px;
      padding: 8px 10px 8px 8px;
      box-shadow: 0 16px 32px -10px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.14);
      color: var(--ink-900);
      z-index: 4;
      animation: popIn .7s cubic-bezier(.2,.8,.2,1) .6s backwards;
      align-items: center;
    }
    @keyframes popIn {
      from { opacity: 0; transform: translateY(10px) scale(.92); }
      to { opacity: 1; transform: translateY(0) scale(1); }
    }
    .product-pop::before {
      content: "✓ 已自动展示";
      position: absolute;
      top: -9px; left: 8px;
      font-size: 9px;
      letter-spacing: .04em;
      padding: 3px 7px;
      background: linear-gradient(135deg, var(--orange-400), var(--orange-500));
      color: #fff;
      border-radius: 5px;
      font-weight: 700;
      box-shadow: 0 4px 10px -2px rgba(249,115,22,.6);
    }
    .product-thumb {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background:
        radial-gradient(circle at 30% 30%, #FEF3C7, #F59E0B 70%);
      position: relative;
      overflow: hidden;
      flex-shrink: 0;
    }
    .product-thumb::after {
      content: "";
      position: absolute;
      inset: 6px 8px;
      border-radius: 5px;
      background: linear-gradient(135deg, #FFFBEB 0%, transparent 60%);
    }
    .product-info {
      min-width: 0;
      display: flex;
      flex-direction: column;
      gap: 2px;
    }
    .product-name {
      font-size: 11px;
      font-weight: 600;
      line-height: 1.3;
      color: var(--ink-900);
      display: -webkit-box;
      -webkit-line-clamp: 1;
      line-clamp: 1;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .product-price-row {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 6px;
    }
    .product-price {
      font-family: var(--font-display);
      font-size: 15px;
      font-weight: 800;
      color: var(--orange-500);
      letter-spacing: -.01em;
      line-height: 1;
    }
    .product-price small { font-size: 10px; font-weight: 600; margin-left: 1px; }
    .product-stock {
      font-family: var(--font-mono);
      font-size: 9.5px;
      color: var(--ink-500);
      padding: 2px 6px;
      background: var(--ink-100);
      border-radius: 4px;
      font-weight: 600;
    }

    .feed-header {
      flex: 0 0 auto;
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      padding: 4px 22px 10px;
    }
    .feed-header h4 { font-size: 13px; font-weight: 700; color: #E2E8F0; }
    .feed-header .sync {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-family: var(--font-mono);
      font-size: 10px;
      color: var(--ink-400);
    }
    .sync .dot {
      width: 5px; height: 5px;
      border-radius: 50%;
      background: var(--green-500);
      box-shadow: 0 0 6px var(--green-500);
    }

    .feed {
      flex: 1 1 auto;
      padding: 0 18px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      overflow: hidden;
    }
    .feed-item {
      background: rgba(30,41,59,.75);
      border: 1px solid rgba(148,163,184,.08);
      border-radius: 12px;
      padding: 9px 11px;
      display: grid;
      grid-template-columns: 28px 1fr auto;
      gap: 10px;
      align-items: center;
      animation: slideInUp .7s cubic-bezier(.2,.8,.2,1) backwards;
    }
    .feed-item:nth-child(1) { animation-delay: .7s; }
    .feed-item:nth-child(2) { animation-delay: .85s; }
    .feed-item:nth-child(3) { animation-delay: 1s; }
    .feed-item:nth-child(4) { animation-delay: 1.15s; }
    @keyframes slideInUp {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .feed-icon {
      width: 28px; height: 28px;
      border-radius: 9px;
      display: grid; place-items: center;
      font-size: 13px;
    }
    .feed-icon.welcome { background: rgba(34,197,94,.18); color: #86EFAC; }
    .feed-icon.qa { background: rgba(56,189,248,.18); color: #7DD3FC; }
    .feed-icon.danmu { background: rgba(168,85,247,.2); color: #D8B4FE; }
    .feed-icon.thanks { background: rgba(244,114,182,.2); color: #F9A8D4; }
    .feed-type {
      font-family: var(--font-mono);
      font-size: 9px;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--ink-400);
      margin-bottom: 2px;
    }
    .feed-body {
      font-size: 11.5px;
      color: #E2E8F0;
      line-height: 1.4;
    }
    .feed-body em {
      font-style: normal;
      color: #BAE6FD;
      font-weight: 600;
    }
    .feed-time {
      font-family: var(--font-mono);
      font-size: 10px;
      color: var(--ink-400);
    }

    .features-strip {
      flex: 0 0 auto;
      margin-top: 10px;
      padding: 11px 18px 14px;
      background: linear-gradient(180deg, rgba(2,132,199,.05), rgba(2,132,199,.18));
      border-top: 1px solid rgba(148,163,184,.1);
    }
    .features-strip h5 {
      margin: 0 0 8px;
      font-family: var(--font-mono);
      font-size: 9px;
      letter-spacing: .16em;
      text-transform: uppercase;
      color: var(--ink-400);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .features-strip h5::before {
      content: "";
      width: 12px; height: 1px;
      background: var(--ink-500);
    }
    .feature-row {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 5px;
    }
    .feature-chip {
      padding: 7px 3px;
      border-radius: 9px;
      text-align: center;
      font-size: 10px;
      color: var(--ink-400);
      background: rgba(15,23,42,.4);
      border: 1px solid rgba(148,163,184,.1);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 3px;
      transition: all .3s;
    }
    .feature-chip .fc-dot {
      width: 5px; height: 5px;
      border-radius: 50%;
      background: var(--ink-500);
    }
    .feature-chip.active {
      color: #fff;
      background: linear-gradient(135deg, var(--brand-600), var(--brand-500));
      border-color: var(--brand-400);
      box-shadow: 0 4px 12px -4px rgba(14,165,233,.55), 0 1px 0 rgba(255,255,255,.2) inset;
      animation: chipBreath 2.4s ease-in-out infinite;
    }
    .feature-chip.active .fc-dot {
      background: #fff;
      box-shadow: 0 0 6px #fff;
    }
    @keyframes chipBreath {
      50% { box-shadow: 0 4px 16px -3px rgba(14,165,233,.75), 0 1px 0 rgba(255,255,255,.2) inset; }
    }

    /* ================ CONNECTOR (between phones) ================ */
    .connector {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      z-index: 4;
      pointer-events: none;
    }
    .flow-svg {
      width: 240px;
      height: 140px;
      overflow: visible;
    }
    .flow-path {
      stroke-dasharray: 6 5;
      animation: dashMove 2.5s linear infinite;
    }
    @keyframes dashMove { to { stroke-dashoffset: -44; } }

    .flow-label {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
    }
    .flow-label .core {
      width: 84px;
      height: 84px;
      border-radius: 50%;
      background: #fff;
      display: grid;
      place-items: center;
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 13px;
      color: var(--brand-700);
      position: relative;
      box-shadow:
        0 0 0 10px rgba(14,165,233,.08),
        0 0 0 22px rgba(14,165,233,.04),
        0 24px 44px -10px rgba(14,165,233,.42),
        0 1px 0 rgba(14,165,233,.1) inset;
    }
    .flow-label .core::before {
      content: "";
      position: absolute;
      inset: -4px;
      border-radius: 50%;
      border: 1.5px dashed rgba(14,165,233,.35);
      animation: spin 18s linear infinite;
    }
    .flow-label .core-text {
      font-size: 12px;
      line-height: 1.1;
      text-align: center;
      background: linear-gradient(135deg, var(--brand-700), var(--brand-500));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .flow-label .core-text span {
      font-family: var(--font-mono);
      font-size: 8.5px;
      letter-spacing: .18em;
      color: var(--ink-400);
      font-weight: 600;
      display: block;
      margin-top: 4px;
      -webkit-text-fill-color: var(--ink-400);
    }
    .flow-label .core::after {
      content: "✨";
      position: absolute;
      top: -6px; right: -4px;
      font-size: 16px;
      animation: sparkRotate 2.6s ease-in-out infinite;
    }

    /* ================ FLOATING UI FRAGMENTS ================ */
    .fragment {
      position: absolute;
      background: #fff;
      border-radius: 14px;
      padding: 10px 14px;
      box-shadow: 0 16px 36px -12px rgba(15,23,42,.25), 0 0 0 1px rgba(15,23,42,.04);
      z-index: 5;
      font-size: 12px;
      animation: fragmentFloat 6s ease-in-out infinite;
    }
    @keyframes fragmentFloat {
      0%,100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }
    .fragment.delay-1 { animation-delay: -1s; }
    .fragment.delay-2 { animation-delay: -2s; }
    .fragment.delay-3 { animation-delay: -3s; }
    .fragment.delay-4 { animation-delay: -4s; }

    /* connecting line going from fragment to a point on phone */
    .fragment .connect-line {
      position: absolute;
      background: linear-gradient(var(--dir, 90deg), rgba(14,165,233,.5), transparent);
      pointer-events: none;
    }

    .frag-icon {
      width: 28px; height: 28px;
      border-radius: 9px;
      display: inline-grid;
      place-items: center;
      margin-right: 8px;
      vertical-align: middle;
      flex-shrink: 0;
    }
    .frag-icon svg { width: 14px; height: 14px; }

    .fragment-body { display: inline-flex; align-items: center; }
    .fragment-text {
      display: inline-flex;
      flex-direction: column;
      gap: 1px;
    }
    .fragment-text .eyebrow {
      font-family: var(--font-mono);
      font-size: 9px;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--ink-400);
      font-weight: 600;
    }
    .fragment-text .title {
      font-size: 13px;
      font-weight: 700;
      color: var(--ink-900);
      letter-spacing: -0.005em;
      white-space: nowrap;
    }
    .fragment-text .title em {
      font-style: normal;
      color: var(--brand-600);
      font-family: var(--font-display);
    }

    /* Fragment 1: AI generating, left-upper, slight overlap with left phone */
    .frag-1 { left: 2%; top: 10%; }
    .frag-1 .frag-icon { background: linear-gradient(135deg, #E0F2FE, #BAE6FD); color: var(--brand-700); }

    /* Fragment 2: product synced, left-lower */
    .frag-2 { left: 7%; bottom: 18%; }
    .frag-2 .frag-icon { background: linear-gradient(135deg, #FED7AA, #FDBA74); color: #9A3412; }

    /* Fragment 3: engagement up, right-upper */
    .frag-3 { right: 2%; top: 16%; }
    .frag-3 .frag-icon { background: linear-gradient(135deg, #DCFCE7, #BBF7D0); color: #15803D; }

    /* Fragment 4: voice style, right-lower */
    .frag-4 { right: 7%; bottom: 22%; }
    .frag-4 .frag-icon { background: linear-gradient(135deg, #EDE9FE, #DDD6FE); color: #6D28D9; }

    /* subtle guide line going from fragment toward phone */
    .fragment::after {
      content: "";
      position: absolute;
      width: 28px; height: 1px;
      background: linear-gradient(var(--line-dir, 90deg), rgba(14,165,233,.5), transparent);
    }
    .frag-1::after { right: -28px; top: 50%; --line-dir: 90deg; }
    .frag-2::after { right: -28px; top: 50%; --line-dir: 90deg; background: linear-gradient(90deg, rgba(249,115,22,.5), transparent); }
    .frag-3::after { left: -28px; top: 50%; --line-dir: 270deg; background: linear-gradient(270deg, rgba(34,197,94,.5), transparent); }
    .frag-4::after { left: -28px; top: 50%; --line-dir: 270deg; background: linear-gradient(270deg, rgba(139,92,246,.5), transparent); }

    .frag-spark {
      position: absolute;
      top: -5px; right: -5px;
      width: 14px; height: 14px;
      color: var(--orange-500);
      animation: sparkRotate 2s ease-in-out infinite;
    }

    /* ================ STATS RIBBON ================ */
    .stats-ribbon {
      margin: -40px auto 0;
      max-width: 1080px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      background: rgba(255,255,255,.78);
      border: 1px solid rgba(14,165,233,.15);
      border-radius: 20px;
      backdrop-filter: blur(16px);
      box-shadow: 0 20px 40px -20px rgba(15,23,42,.15);
      overflow: hidden;
      position: relative;
      z-index: 10;
    }
    .stat {
      padding: 20px 24px;
      display: flex;
      align-items: center;
      gap: 14px;
      position: relative;
    }
    .stat:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0; top: 20%; bottom: 20%;
      width: 1px;
      background: linear-gradient(180deg, transparent, var(--ink-200), transparent);
    }
    .stat-icon {
      width: 44px; height: 44px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      flex-shrink: 0;
    }
    .stat-icon.blue { background: linear-gradient(135deg, #E0F2FE, #BAE6FD); color: var(--brand-700); }
    .stat-icon.orange { background: linear-gradient(135deg, #FED7AA, #FDBA74); color: #9A3412; }
    .stat-icon.violet { background: linear-gradient(135deg, #EDE9FE, #DDD6FE); color: #6D28D9; }
    .stat-icon.green { background: linear-gradient(135deg, #DCFCE7, #BBF7D0); color: #15803D; }
    .stat-icon svg { width: 20px; height: 20px; }
    .stat-content {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }
    .stat-key {
      font-family: var(--font-mono);
      font-size: 10px;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--ink-500);
      font-weight: 600;
    }
    .hero-section .stat-value {
      font-family: var(--font-display);
      font-size: 22px;
      font-weight: 800;
      color: var(--ink-900);
      letter-spacing: -.02em;
      line-height: 1;
    }
    .hero-section .stat-value small {
      font-family: var(--font-ui);
      font-size: 12px;
      font-weight: 500;
      color: var(--ink-500);
      margin-left: 4px;
    }
    .hero-section .stat-desc {
      font-size: 11px;
      color: var(--ink-500);
      margin-top: 3px;
    }

    /* ================ RESPONSIVE ================ */
    @media (max-width: 1100px) {
      .fragment { display: none; }
      .connector { display: none; }
      .stage { height: auto; margin-top: 48px; }
      .phone-slot.left, .phone-slot.right { position: relative; left: auto; right: auto; top: auto; margin: 0 auto 40px; }
      .phone-slot.left .phone, .phone-slot.right .phone { transform: none; }
      .stats-ribbon { grid-template-columns: repeat(2, 1fr); margin-top: 40px; }
      .stat:nth-child(2)::after { display: none; }
    }
    @media (max-width: 640px) {
      .hero-section { padding: 100px 16px 80px; }
      .hero-kicker { font-size: 10.5px; padding: 7px 11px; }
      .headline { font-size: 48px; }
      .subhead { font-size: 23px; }
      .hero-desc { font-size: 14px; padding: 15px 16px; }
      .stats-ribbon { grid-template-columns: 1fr; }
      .stat:not(:last-child)::after { top: auto; bottom: 0; left: 20%; right: 20%; height: 1px; width: auto; }
    }

    /* ================= DESKTOP 2-COL LAYOUT (≥1101px) ================= */
    /* 左文字 + 右双屏，第一屏完整展示说明 + 手机内容 */
    @media (min-width: 1101px) {
      .hero-section {
        padding: 120px 32px 36px;
        min-height: auto;
      }
      .hero-section .container {
        display: grid;
        grid-template-columns: minmax(460px, 0.95fr) minmax(600px, 1.1fr);
        grid-template-rows: 1fr;
        column-gap: 48px;
        align-items: center;
        max-width: 1360px;
      }
      /* 左列 headline 区 · 相对右侧 stage 垂直居中 */
      .headline-wrap {
        grid-column: 1;
        grid-row: 1;
        padding: 0;
        margin: 0;
        align-self: center;
        text-align: left;
      }
      .headline {
        text-align: left;
        font-size: 78px;
        line-height: .95;
      }
      .subhead {
        text-align: left;
        margin: 20px 0 12px;
        max-width: 560px;
        font-size: 31px;
      }
      .hero-desc {
        text-align: left;
        margin: 0 0 28px;
        max-width: 560px;
      }
      .cta-row {
        justify-content: flex-start;
        margin: 24px 0 18px;
      }
      .trust-row {
        justify-content: flex-start;
      }
      /* stats ribbon: mini 化塞入左列底部 */
      .stats-ribbon {
        grid-column: 1;
        grid-row: 2;
        grid-template-columns: repeat(4, 1fr);
        column-gap: 4px;
        padding: 14px 16px;
        margin-top: 32px;
        max-width: 100%;
        background: rgba(255, 255, 255, 0.7);
      }
      .stat {
        padding: 4px 6px;
        gap: 10px;
      }
      .stat-icon {
        width: 34px;
        height: 34px;
        border-radius: 10px;
      }
      .stat-icon svg {
        width: 16px;
        height: 16px;
      }
      .stat-content {
        gap: 1px;
      }
      .stat-key {
        font-size: 8.5px;
        letter-spacing: 0.1em;
      }
      .hero-section .stat-value {
        font-size: 18px;
        line-height: 1;
      }
      .hero-section .stat-value small {
        display: block;
        font-size: 9.5px;
        margin-left: 0;
        margin-top: 3px;
        color: var(--ink-500);
        font-weight: 500;
        line-height: 1.2;
      }
      .hero-section .stat-desc { display: none; }
      .stat:not(:last-child)::after { display: none; }
      /* 右列 stage · 双屏放大 */
      .stage {
        grid-column: 2;
        grid-row: 1;
        max-width: 100%;
        width: 100%;
        height: 820px;
        align-self: center;
        justify-self: stretch;
        transform: scale(0.76);
        transform-origin: center center;
        /* margin 横向 0 覆盖默认 margin:72px auto 0 的 auto 防止 grid stretch 失效；
           纵向负值让 stage 在 grid 行内占用更少空间，避免 hero 过高 */
        margin: -130px 0;
      }
      /* 浮动碎片位置微调，避免右列溢出太多 */
      .fragment.frag-1 { left: -6%; top: 3%; }
      .fragment.frag-2 { left: -8%; bottom: 6%; }
      .fragment.frag-3 { right: -2%; top: 5%; }
      .fragment.frag-4 { right: -4%; bottom: 5%; }
      /* 双屏在窄列下用 -2% 让手机适度向外溢出，避免重叠（hero overflow hidden 兜底）*/
      .phone-slot.left { left: -2%; top: 60px; }
      .phone-slot.right { right: -2%; top: 90px; }
    }

    /* ================= Hero · 应用市场下载提示（轻量辅助文案） ================= */
    .hero-store-hint {
      margin: 14px 0 0;
      text-align: center;
      font-size: 13px;
      line-height: 1.6;
      color: #64748B;
    }