/* ====================================================
   VCD · Vocal Clone Dub  |  ierTMT 官方网站 v1.0
   设计语言：科技产品型 × 出海SaaS型
   ==================================================== */

:root {
  --brand-blue: #1F3A8A;
  --brand-blue-2: #2557C8;
  --electric: #7C3AED;
  --pulse: #DC2A6E;
  --wave: #FACC15;
  --navy: #0B1130;
  --navy-2: #141A3D;
  --off-white: #F8FAFC;
  --slate-900: #0F172A;
  --slate-800: #1F2937;
  --slate-600: #475569;
  --slate-500: #6B7280;
  --slate-400: #94A3B8;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --green: #10B981;
  --grad-cta: linear-gradient(135deg, #7C3AED 0%, #DC2A6E 100%);
  --grad-cta-hover: linear-gradient(135deg, #6D28D9 0%, #BE185D 100%);
  --grad-hero: radial-gradient(80% 60% at 80% 20%, rgba(124,58,237,0.30), transparent 60%),
               radial-gradient(60% 50% at 10% 80%, rgba(220,42,110,0.22), transparent 60%),
               linear-gradient(180deg, #0B1130 0%, #141A3D 100%);
  --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-card-hover: 0 20px 40px rgba(15, 23, 42, 0.10);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --container: 1200px;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", "Source Han Sans CN", "Noto Sans CJK SC", "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --sans-jp: "Noto Sans JP", "Yu Gothic", "Hiragino Sans", "Inter", sans-serif;
  --display: "Inter", "PingFang SC", "HarmonyOS Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--slate-800);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .15s; }
a:hover { color: var(--brand-blue-2); }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
[hidden] { display: none !important; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* =============== 顶部导航 =============== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--slate-200);
}
.nav-inner {
  display: flex; align-items: center; gap: 32px;
  height: 68px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 20px; letter-spacing: -0.02em;
  color: var(--slate-900);
}
.logo-mark {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: var(--grad-cta);
  color: #fff; border-radius: 8px;
  font-size: 14px; font-weight: 800;
  box-shadow: 0 4px 12px rgba(124,58,237,0.35);
}
.logo-sub { font-size: 11px; color: var(--slate-500); font-weight: 500; letter-spacing: 0.04em; }
.nav-links {
  display: flex; align-items: center; gap: 4px;
  margin-left: auto;
}
.nav-links a {
  padding: 10px 14px; border-radius: 8px;
  color: var(--slate-600); font-weight: 500; font-size: 15px;
}
.nav-links a:hover { background: var(--slate-100); color: var(--slate-900); }
.nav-links a.active { color: var(--slate-900); }
.nav-tools {
  display: flex; align-items: center; gap: 12px;
  margin-left: 12px;
}
.lang-switch {
  display: flex; gap: 2px; padding: 4px;
  background: var(--slate-100); border-radius: var(--radius-pill);
}
.lang-switch button {
  padding: 4px 10px; border-radius: var(--radius-pill);
  font-size: 12px; font-weight: 600; color: var(--slate-500);
}
.lang-switch button.active {
  background: #fff; color: var(--slate-900);
  box-shadow: 0 1px 3px rgba(15,23,42,0.10);
}
.menu-btn { display: none; }
@media (max-width: 980px) {
  .nav-links, .nav-tools { display: none; }
  .menu-btn { display: grid; place-items: center; width: 40px; height: 40px; margin-left: auto; border-radius: 8px; color: var(--slate-700); }
  .menu-btn:hover { background: var(--slate-100); }
  .nav-mobile-open .nav-links {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--slate-200);
    padding: 8px 16px 16px;
  }
  .nav-mobile-open .nav-links a { padding: 14px; border-radius: 0; border-bottom: 1px solid var(--slate-100); }
  .nav-mobile-open .nav-tools {
    display: flex; flex-direction: row; justify-content: space-between;
    position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; padding: 16px;
    transform: translateY(360px);
  }
}

/* =============== 通用按钮 =============== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600; font-size: 15px;
  transition: transform .12s, box-shadow .15s, background .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--grad-cta); color: #fff;
  box-shadow: 0 8px 22px rgba(124,58,237,0.32);
}
.btn-primary:hover { background: var(--grad-cta-hover); color: #fff; box-shadow: 0 12px 28px rgba(124,58,237,0.44); }
.btn-ghost {
  background: rgba(255,255,255,0.06); color: #fff;
  border: 1px solid rgba(255,255,255,0.16);
}
.btn-ghost:hover { background: rgba(255,255,255,0.12); color: #fff; }
.btn-light {
  background: #fff; color: var(--slate-800);
  border: 1px solid var(--slate-200);
}
.btn-light:hover { color: var(--slate-900); border-color: var(--slate-300); }
.btn-sm { padding: 8px 14px; font-size: 13px; }

/* =============== Section 通用 =============== */
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-dark { background: var(--navy); color: #fff; }
.section-soft { background: var(--off-white); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  background: rgba(124,58,237,0.10);
  color: var(--electric);
  border-radius: var(--radius-pill);
  font-size: 12px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase;
}
.eyebrow.light { background: rgba(255,255,255,0.10); color: rgba(255,255,255,0.86); }
.h-section {
  font-family: var(--display);
  font-size: clamp(28px, 4vw, 44px); line-height: 1.15;
  font-weight: 800; letter-spacing: -0.02em;
  color: var(--slate-900);
  margin: 16px 0 12px;
}
.section-dark .h-section { color: #fff; }
.h-section em {
  font-style: normal;
  background: var(--grad-cta);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.lead {
  font-size: 18px; color: var(--slate-500); max-width: 640px;
}
.section-dark .lead { color: rgba(255,255,255,0.72); }
.section-head { margin-bottom: 56px; }
.section-head.center { text-align: center; }
.section-head.center .lead { margin: 0 auto; }

/* =============== HERO =============== */
.hero {
  position: relative; overflow: hidden;
  background: var(--grad-hero);
  color: #fff;
  padding: 96px 0 120px;
}
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px;
  align-items: center;
}
@media (max-width: 980px) {
  .hero { padding: 64px 0 88px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  font-size: 13px; color: rgba(255,255,255,0.86);
}
.hero-eyebrow .dot { width: 6px; height: 6px; background: var(--wave); border-radius: 50%; box-shadow: 0 0 10px var(--wave); }
.hero h1 {
  font-family: var(--display);
  font-size: clamp(34px, 5.4vw, 64px); line-height: 1.05;
  letter-spacing: -0.025em; font-weight: 800;
  margin: 18px 0 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, #FFFFFF 0%, #FACC15 50%, #DC2A6E 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.hero-lead {
  font-size: 18px; color: rgba(255,255,255,0.78);
  max-width: 540px; margin: 0 0 32px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-trust {
  margin-top: 56px; padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.10);
}
.hero-trust .label { font-size: 12px; color: rgba(255,255,255,0.5); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 14px; }
.hero-trust ul {
  display: flex; flex-wrap: wrap; gap: 28px;
  list-style: none; padding: 0; margin: 0;
}
.hero-trust li { color: rgba(255,255,255,0.7); font-size: 14px; font-weight: 500; }
.hero-trust li strong { color: #fff; font-weight: 700; }

/* 粒子背景 */
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(60% 60% at 50% 30%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(60% 60% at 50% 30%, black 30%, transparent 80%);
}

/* =============== AB 试听器 =============== */
.player {
  position: relative;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  padding: 22px;
  backdrop-filter: blur(8px);
}
.player-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.player-meta { display: flex; align-items: center; gap: 10px; }
.player-meta .tag {
  padding: 4px 10px; border-radius: var(--radius-pill);
  background: rgba(124,58,237,0.20); color: #DDD6FE;
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em;
}
.player-meta h4 { margin: 0; font-size: 15px; font-weight: 700; color: #fff; }
.lang-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.86);
  font-size: 12px; font-weight: 600;
}
.player-track {
  display: flex; align-items: center; gap: 14px;
  padding: 14px;
  background: rgba(11,17,48,0.55);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
}
.player-track + .player-track { margin-bottom: 0; }
.play-btn {
  flex: 0 0 44px; width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--grad-cta); color: #fff;
  box-shadow: 0 8px 18px rgba(124,58,237,0.40);
}
.play-btn:hover { transform: scale(1.04); }
.play-btn[data-state="playing"] svg.icon-play { display: none; }
.play-btn[data-state="paused"] svg.icon-pause { display: none; }
.track-label {
  flex: 0 0 64px; font-size: 12px; color: rgba(255,255,255,0.6);
  letter-spacing: 0.08em; font-weight: 700; text-transform: uppercase;
}
.track-label.cloned { color: var(--wave); }
.waveform {
  flex: 1; height: 36px;
  display: flex; align-items: center; gap: 2px;
  overflow: hidden;
}
.waveform .bar {
  flex: 1; min-width: 2px; height: 30%;
  background: rgba(255,255,255,0.30);
  border-radius: 2px;
  transition: background .15s;
}
.waveform.cloned .bar { background: linear-gradient(180deg, #FACC15, #DC2A6E); }
.player-track[data-state="playing"] .waveform .bar { animation: wave 0.9s ease-in-out infinite; }
.player-track[data-state="playing"] .waveform .bar:nth-child(2n) { animation-delay: 0.1s; }
.player-track[data-state="playing"] .waveform .bar:nth-child(3n) { animation-delay: 0.2s; }
.player-track[data-state="playing"] .waveform .bar:nth-child(5n) { animation-delay: 0.3s; }
@keyframes wave {
  0%, 100% { height: 18%; }
  50% { height: 92%; }
}
.player-foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 16px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.10);
}
.lang-tabs { display: flex; gap: 6px; }
.lang-tabs button {
  padding: 6px 12px; border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.05); color: rgba(255,255,255,0.70);
  font-size: 12px; font-weight: 600;
  border: 1px solid rgba(255,255,255,0.10);
}
.lang-tabs button.active {
  background: rgba(124,58,237,0.30); color: #fff;
  border-color: rgba(124,58,237,0.60);
}
.player-note { font-size: 11px; color: rgba(255,255,255,0.45); }

/* =============== Cards / Grids =============== */
.cards-3 {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.cards-4 {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.cards-2 {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
}
@media (max-width: 980px) {
  .cards-3, .cards-4, .cards-2 { grid-template-columns: 1fr; }
}
.card {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform .18s, box-shadow .18s, border-color .18s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--slate-300);
}
.card .kicker {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; background: var(--slate-100);
  border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 700; color: var(--slate-600);
  letter-spacing: 0.04em; text-transform: uppercase;
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 10px; font-size: 20px; color: var(--slate-900); }
.card p { margin: 0; color: var(--slate-500); font-size: 15px; }
.card .arrow {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px; color: var(--brand-blue-2); font-weight: 600; font-size: 14px;
}
.card-icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: var(--grad-cta); color: #fff;
  border-radius: 12px;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(124,58,237,0.28);
}

/* 价值主张 3 栏 */
.value-card {
  background: linear-gradient(180deg, #fff 0%, #F8FAFC 100%);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  position: relative; overflow: hidden;
}
.value-card .num {
  position: absolute; top: 20px; right: 24px;
  font-size: 56px; line-height: 1;
  font-weight: 800;
  background: var(--grad-cta);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0.25;
}
.value-card h3 { font-size: 22px; margin: 0 0 12px; color: var(--slate-900); }
.value-card p { margin: 0; color: var(--slate-500); font-size: 15px; }

/* 行业方案 8 卡片 */
.solutions-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
@media (max-width: 980px) {
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
}
.solution {
  position: relative;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  transition: transform .18s, box-shadow .18s, border-color .18s;
  overflow: hidden;
}
.solution::before {
  content: ""; position: absolute; inset: -1px;
  background: var(--grad-cta);
  border-radius: inherit;
  opacity: 0; transition: opacity .2s;
  z-index: 0;
}
.solution > * { position: relative; z-index: 1; }
.solution:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}
.solution .icon {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, #EEF2FF, #FCE7F3);
  border-radius: 8px;
  font-size: 18px;
  margin-bottom: 14px;
}
.solution h4 { font-size: 16px; margin: 0 0 6px; color: var(--slate-900); }
.solution p { font-size: 13px; color: var(--slate-500); margin: 0; }

/* 试听库 引流 */
.showcase-tease {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
@media (max-width: 980px) {
  .showcase-tease { grid-template-columns: 1fr; }
}
.tease-card {
  background: var(--navy-2);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex; flex-direction: column; gap: 16px;
  position: relative; overflow: hidden;
}
.tease-card::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 60% at 100% 0%, rgba(124,58,237,0.20), transparent 70%);
  pointer-events: none;
}
.tease-card .meta { display: flex; gap: 8px; flex-wrap: wrap; }
.tease-card .meta span {
  padding: 4px 10px; background: rgba(255,255,255,0.06);
  border-radius: var(--radius-pill);
  font-size: 11px; color: rgba(255,255,255,0.74);
  border: 1px solid rgba(255,255,255,0.10);
  font-weight: 600;
}
.tease-card h4 { margin: 0; font-size: 16px; color: #fff; font-weight: 700; }
.tease-card .ab {
  display: flex; flex-direction: column; gap: 8px;
  background: rgba(0,0,0,0.20); border-radius: var(--radius-sm);
  padding: 12px;
}
.tease-card .ab .row { display: flex; align-items: center; gap: 10px; }
.tease-card .ab .row .play-mini {
  flex: 0 0 28px; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.10); color: #fff;
}
.tease-card .ab .row .play-mini.cloned { background: var(--grad-cta); }
.tease-card .ab .row .label { width: 56px; font-size: 11px; color: rgba(255,255,255,0.6); letter-spacing: 0.06em; text-transform: uppercase; font-weight: 700; }
.tease-card .ab .row .label.cloned { color: var(--wave); }
.tease-card .ab .mini-wave {
  flex: 1; height: 16px; display: flex; gap: 2px; align-items: center;
}
.tease-card .ab .mini-wave i {
  flex: 1; height: 30%; background: rgba(255,255,255,0.30); border-radius: 1px;
}
.tease-card .ab .mini-wave.cloned i {
  background: linear-gradient(180deg, #FACC15, #DC2A6E);
}

/* 流程 4 步 */
.process {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  position: relative;
}
@media (max-width: 980px) { .process { grid-template-columns: 1fr; } }
.process-step {
  padding: 32px 24px;
  border-right: 1px dashed var(--slate-200);
}
.process-step:last-child { border-right: 0; }
@media (max-width: 980px) {
  .process-step { border-right: 0; border-bottom: 1px dashed var(--slate-200); }
  .process-step:last-child { border-bottom: 0; }
}
.process-step .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: var(--grad-cta); color: #fff;
  border-radius: 50%;
  font-weight: 800; font-size: 15px;
  box-shadow: 0 8px 18px rgba(124,58,237,0.30);
  margin-bottom: 18px;
}
.process-step h4 { margin: 0 0 8px; font-size: 18px; color: var(--slate-900); }
.process-step p { margin: 0; font-size: 14px; color: var(--slate-500); }

/* 客户证言 */
.testimonial {
  background: linear-gradient(135deg, #fff, #F8FAFC);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 32px;
  position: relative;
}
.testimonial .quote {
  font-size: 17px; line-height: 1.65;
  color: var(--slate-800);
  margin-bottom: 20px;
}
.testimonial .quote::before {
  content: "“"; font-size: 56px; line-height: 0.6;
  color: var(--electric); margin-right: 4px; vertical-align: -16px;
}
.testimonial .author {
  display: flex; align-items: center; gap: 12px;
}
.avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--grad-cta); color: #fff;
  display: grid; place-items: center;
  font-weight: 700; font-size: 16px;
}
.author-meta { font-size: 13px; }
.author-meta strong { display: block; color: var(--slate-900); font-size: 14px; }
.author-meta span { color: var(--slate-500); }

/* CTA Banner */
.cta-banner {
  background: var(--grad-hero);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  display: flex; justify-content: space-between; align-items: center;
  gap: 32px;
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 20px 20px;
  mask-image: linear-gradient(135deg, black 30%, transparent 80%);
  -webkit-mask-image: linear-gradient(135deg, black 30%, transparent 80%);
}
.cta-banner > * { position: relative; }
.cta-banner h2 { margin: 0 0 8px; font-size: clamp(24px, 3vw, 32px); }
.cta-banner p { margin: 0; color: rgba(255,255,255,0.74); }
@media (max-width: 720px) {
  .cta-banner { flex-direction: column; align-items: flex-start; padding: 36px; }
}

/* =============== 价格表 =============== */
.pricing-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
@media (max-width: 980px) { .pricing-grid { grid-template-columns: 1fr; } }
.tier {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  position: relative;
  transition: transform .18s, box-shadow .18s;
}
.tier:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.tier.featured {
  border-color: transparent;
  background: linear-gradient(180deg, #fff, #F5F3FF);
  box-shadow: 0 30px 60px -20px rgba(124,58,237,0.30);
  transform: translateY(-8px);
}
.tier.featured::before {
  content: "Most popular";
  position: absolute; top: -12px; right: 24px;
  padding: 4px 12px;
  background: var(--grad-cta); color: #fff;
  border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em;
}
.tier h3 { margin: 0 0 8px; font-size: 20px; color: var(--slate-900); }
.tier .price { font-size: 32px; font-weight: 800; color: var(--slate-900); margin: 14px 0 4px; letter-spacing: -0.02em; }
.tier .price-sub { font-size: 13px; color: var(--slate-500); margin-bottom: 22px; }
.tier ul { list-style: none; padding: 0; margin: 0 0 24px; }
.tier li { padding: 6px 0; font-size: 14px; color: var(--slate-600); display: flex; gap: 8px; }
.tier li::before { content: "✓"; color: var(--green); font-weight: 700; }

/* =============== Showcase 试听库 =============== */
.filter-bar {
  display: flex; gap: 12px; flex-wrap: wrap;
  padding: 16px; background: var(--slate-100); border-radius: var(--radius-md);
}
.filter {
  display: flex; gap: 6px;
}
.filter-chip {
  padding: 6px 12px; border-radius: var(--radius-pill);
  background: #fff; border: 1px solid var(--slate-200);
  font-size: 12px; font-weight: 600; color: var(--slate-600);
}
.filter-chip.active { background: var(--slate-900); color: #fff; border-color: var(--slate-900); }
.sample-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  margin-top: 28px;
}
@media (max-width: 980px) { .sample-grid { grid-template-columns: 1fr; } }
.sample {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex; flex-direction: column; gap: 14px;
}
.sample .meta { display: flex; gap: 6px; flex-wrap: wrap; }
.sample .meta span {
  padding: 3px 10px; border-radius: var(--radius-pill);
  background: var(--slate-100); color: var(--slate-600);
  font-size: 11px; font-weight: 600;
}
.sample h4 { margin: 0; font-size: 15px; color: var(--slate-900); font-weight: 700; }
.sample .ab2 { display: flex; flex-direction: column; gap: 6px; }
.sample .ab2 .row { display: flex; align-items: center; gap: 8px; padding: 8px; background: var(--slate-100); border-radius: 8px; }
.sample .ab2 .row .play-mini { width: 24px; height: 24px; flex: 0 0 24px; border-radius: 50%; background: var(--slate-300); color: #fff; display: grid; place-items: center; }
.sample .ab2 .row .play-mini.cloned { background: var(--grad-cta); }
.sample .ab2 .row .lab { font-size: 11px; font-weight: 700; color: var(--slate-500); width: 56px; letter-spacing: 0.06em; text-transform: uppercase; }
.sample .ab2 .row .lab.cloned { color: var(--pulse); }
.sample .ab2 .row .mini-wave { flex: 1; height: 14px; display: flex; gap: 2px; align-items: center; }
.sample .ab2 .row .mini-wave i { flex: 1; height: 30%; background: var(--slate-300); border-radius: 1px; }
.sample .ab2 .row .mini-wave.cloned i { background: linear-gradient(180deg, var(--electric), var(--pulse)); }
.sample .copy-style {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: var(--radius-pill);
  background: var(--slate-100); color: var(--slate-700);
  font-size: 12px; font-weight: 600;
  align-self: flex-start;
}
.sample .copy-style:hover { background: var(--slate-200); }

/* =============== About / Team =============== */
.story {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
@media (max-width: 980px) { .story { grid-template-columns: 1fr; gap: 36px; } }
.story-img {
  aspect-ratio: 4/3; border-radius: var(--radius-lg);
  background: var(--grad-hero);
  display: grid; place-items: center;
  color: rgba(255,255,255,0.84); font-size: 14px;
  position: relative; overflow: hidden;
}
.story-img::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.10) 1px, transparent 1px);
  background-size: 18px 18px;
}
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
@media (max-width: 720px) { .values { grid-template-columns: 1fr; } }
.value {
  padding: 22px; background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}
.value strong { color: var(--slate-900); display: block; margin-bottom: 6px; font-size: 15px; }
.value p { margin: 0; font-size: 14px; color: var(--slate-500); }

/* =============== 联系页 =============== */
.contact-grid {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px;
}
@media (max-width: 980px) { .contact-grid { grid-template-columns: 1fr; gap: 32px; } }
.form-card {
  background: #fff; border: 1px solid var(--slate-200);
  border-radius: var(--radius-md); padding: 32px;
  box-shadow: var(--shadow-card);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 720px) { .form-row { grid-template-columns: 1fr; } }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--slate-700); }
.form-group input, .form-group select, .form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--slate-200);
  border-radius: 8px;
  font-family: inherit; font-size: 15px;
  background: #fff; color: var(--slate-900);
  transition: border-color .15s, box-shadow .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: 0; border-color: var(--electric);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.18);
}
.form-group textarea { min-height: 110px; resize: vertical; }
.contact-info .info-block {
  padding: 22px 0; border-top: 1px solid var(--slate-200);
}
.contact-info .info-block:first-child { border-top: 0; padding-top: 0; }
.contact-info h4 { margin: 0 0 8px; font-size: 14px; color: var(--slate-500); font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.contact-info p { margin: 0; font-size: 16px; color: var(--slate-900); font-weight: 600; }
.contact-info ul { list-style: none; padding: 0; margin: 0; }
.contact-info ul li { display: flex; gap: 10px; padding: 6px 0; font-size: 14px; color: var(--slate-700); }

/* =============== Footer =============== */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.75);
  padding: 72px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr 1fr; gap: 32px;
}
@media (max-width: 980px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer h5 { color: #fff; font-size: 14px; margin: 0 0 14px; font-weight: 700; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li { padding: 5px 0; font-size: 14px; }
.footer ul li a { color: rgba(255,255,255,0.65); }
.footer ul li a:hover { color: #fff; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.55); margin: 14px 0 18px; max-width: 320px; }
.socials { display: flex; gap: 8px; flex-wrap: wrap; }
.socials a {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 8px;
  font-size: 12px; color: rgba(255,255,255,0.85);
  font-weight: 600;
  transition: all .15s;
}
.socials a:hover { background: rgba(255,255,255,0.10); color: #fff; transform: translateY(-1px); }
.copyright {
  margin-top: 56px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.10);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  font-size: 12px; color: rgba(255,255,255,0.4);
}

/* =============== 浮动 CTA =============== */
.floating-cta {
  position: fixed; right: 20px; bottom: 20px;
  display: flex; flex-direction: column; gap: 10px;
  z-index: 40;
}
.floating-cta a {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 12px 30px rgba(15,23,42,0.16);
  color: var(--slate-700); font-size: 11px; font-weight: 700;
  border: 1px solid var(--slate-200);
  transition: transform .15s;
}
.floating-cta a:hover { transform: translateY(-2px) scale(1.04); }
.floating-cta a.primary { background: var(--grad-cta); color: #fff; border-color: transparent; box-shadow: 0 12px 30px rgba(124,58,237,0.40); }

/* =============== 通用 utilities =============== */
.text-grad {
  background: var(--grad-cta);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.divider { height: 1px; background: var(--slate-200); margin: 56px 0; }
.muted { color: var(--slate-500); }
.center { text-align: center; }
.flex { display: flex; }
.gap-12 { gap: 12px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }

/* ScrollReveal 简易版 */
.reveal { opacity: 0; transform: translateY(12px); transition: all .6s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* =============== 内页通用 page-header =============== */
.page-header {
  background: var(--grad-hero);
  color: #fff;
  padding: 80px 0 96px;
  position: relative; overflow: hidden;
}
.page-header::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(50% 80% at 50% 30%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(50% 80% at 50% 30%, black 30%, transparent 80%);
}
.page-header .container { position: relative; }
.page-header h1 {
  font-family: var(--display);
  font-size: clamp(32px, 5vw, 52px); font-weight: 800;
  letter-spacing: -0.025em; margin: 14px 0 12px; line-height: 1.1;
}
.page-header h1 em { font-style: normal; background: linear-gradient(135deg, #fff, #FACC15 60%, #DC2A6E); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.page-header p { font-size: 18px; color: rgba(255,255,255,0.78); max-width: 720px; margin: 0; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,0.55); }
.breadcrumb a { color: rgba(255,255,255,0.85); }

/* FAQ */
.faq-item {
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  background: #fff;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-q {
  width: 100%; text-align: left;
  padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-weight: 700; font-size: 16px; color: var(--slate-900);
}
.faq-q .plus {
  width: 24px; height: 24px; flex: 0 0 24px;
  border-radius: 50%; background: var(--slate-100);
  display: grid; place-items: center;
  color: var(--slate-600); font-weight: 600;
  transition: transform .2s;
}
.faq-item.open .faq-q .plus { transform: rotate(45deg); background: var(--electric); color: #fff; }
.faq-a { display: none; padding: 0 24px 22px; color: var(--slate-600); font-size: 15px; line-height: 1.7; }
.faq-item.open .faq-a { display: block; }

/* 表格 */
.compare-table {
  width: 100%; border-collapse: collapse;
  background: #fff; border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-card);
}
.compare-table th, .compare-table td {
  padding: 14px 18px; text-align: left;
  border-bottom: 1px solid var(--slate-200);
  font-size: 14px;
}
.compare-table th { background: var(--slate-100); font-weight: 700; color: var(--slate-700); font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; }
.compare-table tr:last-child td { border-bottom: 0; }

/* 数据 metrics */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 720px) { .metrics { grid-template-columns: 1fr 1fr; } }
.metric { padding: 24px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.10); border-radius: var(--radius-md); }
.metric .v { font-size: 36px; font-weight: 800; color: #fff; line-height: 1; letter-spacing: -0.02em; margin-bottom: 6px; }
.metric .v em { font-style: normal; background: var(--grad-cta); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.metric .l { font-size: 13px; color: rgba(255,255,255,0.6); }