/* 接麦 JieMai 官网样式（桌面 1440 / 移动 390 双画板，断点 768px） */

:root {
  --purple: #6C4DF6;
  --purple-deep: #4B2FD6;
  --purple-deep-hover: #3A1FC2;
  --ink: #13112A;
  --deep: #0E0C20;
  --bg: #F6F5FB;
  --orange: #FFB45E;
  --line: #E6E3F1;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Noto Sans SC', monospace;
  --font-brand: 'Space Grotesk', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--purple-deep); text-decoration: none; }
a:hover { color: var(--purple-deep-hover); }
button { font-family: inherit; cursor: pointer; }
img { display: block; }

.jm-bar { animation: jm-wave 1.3s ease-in-out infinite; transform-origin: center; }
.jm-pulse { animation: jm-pulse 1.6s ease-in-out infinite; }
@keyframes jm-wave { 0%, 100% { transform: scaleY(1); } 50% { transform: scaleY(.45); } }
@keyframes jm-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
@media (prefers-reduced-motion: reduce) { .jm-bar, .jm-pulse { animation: none; } }

.mono { font-family: var(--font-mono); }
.only-mobile { display: none; }

.container { width: 100%; max-width: 1280px; margin: 0 auto; }
.section { padding-inline: clamp(20px, 5.55vw, 80px); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--purple);
}

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; border-radius: 12px; font-weight: 700; }
.btn-primary { height: 44px; padding: 0 22px; background: var(--purple); color: #FFFFFF; font-size: 15px; }
.btn-primary:hover { color: #FFFFFF; background: #5B3DF0; }
.btn-outline { height: 40px; padding: 0 18px; border: 1px solid #DEDAEE; border-radius: 12px; background: #FFFFFF; color: var(--ink); font-size: 14px; font-weight: 500; }

/* ---------- Header ---------- */
.site-header {
  position: relative;
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  padding-inline: clamp(20px, 5.55vw, 80px);
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-name { font-size: 22px; font-weight: 900; letter-spacing: .04em; }
.brand-tag { font-family: var(--font-brand); font-size: 16px; font-weight: 500; color: #6B6882; }
.site-nav { display: flex; align-items: center; gap: 44px; }
.site-nav a { font-size: 15px; color: #3B3854; }
.site-nav a:hover { color: var(--purple-deep); }
.header-actions { display: flex; align-items: center; gap: 24px; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--ink);
  align-items: center;
  justify-content: center;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 1100px;
  background-image: linear-gradient(rgba(108, 77, 246, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 77, 246, .08) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(ellipse 60% 55% at 50% 35%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 60% 55% at 50% 35%, #000 20%, transparent 75%);
}
.badge {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 6px 6px;
  border: 1px solid #E1DCF7;
  border-radius: 999px;
  background: #FFFFFF;
}
.badge-tag {
  padding: 4px 10px;
  border-radius: 999px;
  background: #EEEAFE;
  color: var(--purple-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
}
.badge-text { font-size: 14px; color: #3B3854; }
.hero-title {
  position: relative;
  margin: 28px 0 0;
  font-size: clamp(44px, 5.9vw, 84px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: .01em;
  text-align: center;
  color: var(--ink);
}
.hero-title .hl { color: var(--purple); }
.hero-sub {
  position: relative;
  margin: 24px 0 0;
  max-width: 760px;
  font-size: clamp(16px, 1.4vw, 20px);
  line-height: 1.7;
  color: #4A4763;
  text-align: center;
}
.hero-cta { position: relative; margin-top: 40px; display: flex; align-items: center; gap: 16px; }
.btn-hero {
  height: 56px;
  padding: 0 30px;
  border-radius: 14px;
  background: var(--purple);
  color: #FFFFFF;
  font-size: 17px;
  box-shadow: 0 14px 30px -14px rgba(76, 47, 214, .8);
}
.btn-hero:hover { color: #FFFFFF; background: #5B3DF0; }
.btn-hero-ghost {
  height: 56px;
  padding: 0 28px;
  border-radius: 14px;
  background: #FFFFFF;
  border: 1px solid #DEDAEE;
  color: var(--ink);
  font-size: 17px;
  font-weight: 500;
}

/* Hero 舞台（手机 mockup + 浮动卡片） */
.hero-viewport { width: 100%; min-width: 0; margin-top: 64px; overflow: hidden; height: 760px; }
.hero-stage { position: relative; width: 1280px; height: 760px; margin: 0; margin-inline: calc((100% - 1280px) / 2); transform-origin: top center; }
.stage-glow {
  position: absolute; left: 290px; top: 100px; width: 700px; height: 540px; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(108, 77, 246, .26), rgba(108, 77, 246, 0));
}
.stage-ring {
  position: absolute; left: 90px; top: 250px; width: 1100px; height: 300px;
  border: 1.5px solid rgba(108, 77, 246, .4); border-radius: 50%; transform: rotate(-7deg);
}
.stage-dot {
  position: absolute; left: 88px; top: 461px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--purple); box-shadow: 0 0 0 6px rgba(108, 77, 246, .16);
}
.phone { position: absolute; background: var(--deep); }
.phone-screen { width: 100%; height: 100%; overflow: hidden; }
.phone-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.phone-left {
  left: 220px; top: 110px; width: 272px; height: 595px; padding: 10px; border-radius: 44px;
  transform: rotate(-6deg); box-shadow: 0 40px 70px -30px rgba(38, 20, 120, .45);
}
.phone-left .phone-screen { border-radius: 34px; background: #FFFFFF; }
.phone-right {
  left: 480px; top: 16px; width: 320px; height: 695px; padding: 12px; border-radius: 52px;
  box-shadow: 0 50px 90px -30px rgba(38, 20, 120, .55), inset 0 0 0 2px rgba(255, 255, 255, .08);
}
.phone-right .phone-screen { border-radius: 40px; background: #1A1830; }

.float-card { position: absolute; box-sizing: border-box; }
.card-voice {
  left: 40px; top: 300px; width: 250px; padding: 14px 16px; border-radius: 18px;
  background: #FFFFFF; border: 1px solid var(--line);
  box-shadow: 0 24px 50px -24px rgba(38, 20, 120, .35);
  display: flex; align-items: center; gap: 12px;
}
.card-voice-icon {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: 50%;
  background: var(--purple); color: #FFFFFF;
  display: flex; align-items: center; justify-content: center;
}
.card-voice-text { display: flex; flex-direction: column; gap: 2px; }
.card-voice-text .t { font-size: 15px; font-weight: 700; }
.card-voice-text .s { font-family: var(--font-mono); font-size: 12px; color: #6B6882; }

.card-script {
  left: 850px; top: 56px; width: 340px; padding: 20px; border-radius: 24px;
  background: rgba(255, 255, 255, .95); border: 1px solid var(--line);
  box-shadow: 0 30px 60px -30px rgba(38, 20, 120, .35);
  display: flex; flex-direction: column; gap: 12px;
}
.card-script-head { display: flex; align-items: center; justify-content: space-between; }
.card-script-title { display: flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 700; }
.card-script-icon {
  width: 32px; height: 32px; border-radius: 10px; background: #EEEAFE; color: var(--purple);
  display: flex; align-items: center; justify-content: center;
}
.card-script-chip {
  padding: 4px 8px; border-radius: 8px; background: #EEEAFE; color: var(--purple-deep);
  font-family: var(--font-mono); font-size: 12px;
}
.script-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 12px; border-radius: 12px; background: var(--bg);
}
.script-item .num { padding-top: 2px; font-family: var(--font-mono); font-size: 12px; color: #6B6882; }
.script-item-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.script-item .t { font-size: 14px; font-weight: 700; }
.script-item .s {
  font-size: 13px; color: #6B6882;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.script-item--gen { background: #FFFFFF; border: 1px dashed #CFC6F5; }
.script-item--gen .num { color: var(--purple-deep); }
.script-item--gen .script-item-body { flex-grow: 1; gap: 8px; }
.gen-head { display: flex; align-items: center; justify-content: space-between; }
.gen-status { font-family: var(--font-mono); font-size: 12px; color: var(--purple-deep); }
.gen-bar { display: block; height: 6px; width: 100%; border-radius: 3px; background: #E4DEFD; }
.gen-bar--short { width: 62%; }

.card-chat {
  left: 910px; top: 452px; width: 320px; padding: 18px; border-radius: 22px;
  background: var(--ink); color: #FFFFFF;
  box-shadow: 0 30px 60px -24px rgba(19, 17, 42, .6);
  display: flex; flex-direction: column; gap: 14px;
}
.chat-q { display: flex; align-items: center; gap: 10px; }
.chat-avatar {
  width: 30px; height: 30px; flex-shrink: 0; border-radius: 50%;
  background: var(--orange); color: var(--ink);
  font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.chat-q-text { font-size: 14px; }
.chat-q-text .name { color: #B9A9FF; }
.chat-a {
  display: flex; flex-direction: column; gap: 8px;
  padding: 12px 14px; border-radius: 4px 16px 16px 16px; background: var(--purple);
}
.chat-a-head { display: flex; align-items: center; gap: 8px; }
.chat-status { font-family: var(--font-mono); font-size: 12px; letter-spacing: .04em; }
.chat-a-text { font-size: 14px; line-height: 1.6; }

.stage-fade {
  position: absolute; left: -80px; bottom: 0; width: 1440px; height: 190px;
  background: linear-gradient(180deg, rgba(246, 245, 251, 0) 0%, var(--bg) 88%);
}

/* 声波条 */
.wave { display: flex; align-items: center; }
.wave span { display: block; border-radius: 1px; background: #FFFFFF; }
.wave-chat { height: 18px; gap: 2px; }
.wave-chat span { width: 2px; }
.wave-chat span:nth-child(1) { height: 6px; }
.wave-chat span:nth-child(2) { height: 12px; animation-delay: -.2s; }
.wave-chat span:nth-child(3) { height: 18px; animation-delay: -.4s; }
.wave-chat span:nth-child(4) { height: 10px; animation-delay: -.6s; }
.wave-chat span:nth-child(5) { height: 16px; animation-delay: -.8s; }
.wave-chat span:nth-child(6) { height: 8px; animation-delay: -1s; }
.wave-chat span:nth-child(7) { height: 14px; animation-delay: -1.2s; }

/* ---------- 产品价值 ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid #E1DDF0;
  border-bottom: 1px solid #E1DDF0;
}
.value { padding: 40px 40px 44px; display: flex; align-items: flex-start; gap: 20px; }
.value:first-child { padding-left: 0; }
.value:last-child { padding-right: 0; }
.value + .value { border-left: 1px solid #E1DDF0; }
.value-icon {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px;
  background: #EEEAFE; color: var(--purple);
  display: flex; align-items: center; justify-content: center;
}
.value-text-wrap { display: flex; flex-direction: column; gap: 8px; }
.value-title { font-size: 22px; font-weight: 800; }
.value-text { font-size: 15px; line-height: 1.7; color: #5A5773; }

/* ---------- 核心能力 ---------- */
.features { padding-top: 136px; }
.features-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 80px; }
.features-title-wrap { display: flex; flex-direction: column; gap: 18px; }
.features h2 { margin: 0; font-size: clamp(34px, 4vw, 52px); line-height: 1.2; font-weight: 900; }
.features-sub { margin: 0; max-width: 440px; font-size: 16px; line-height: 1.8; color: #5A5773; }
.features-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}
.feature-card {
  box-sizing: border-box;
  padding: 36px;
  border-radius: 28px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 28px;
  min-height: 520px;
}
.span-7 { grid-column: span 7; }
.span-5 { grid-column: span 5; }
.feature-head { display: flex; flex-direction: column; gap: 12px; }
.feature-title-row { display: flex; align-items: center; gap: 12px; }
.feature-num {
  padding: 4px 10px; border-radius: 8px; background: #EEEAFE; color: var(--purple-deep);
  font-family: var(--font-mono); font-size: 13px; font-weight: 500;
}
.feature-card h3 { margin: 0; font-size: 28px; font-weight: 800; }
.feature-desc { margin: 0; font-size: 16px; line-height: 1.7; color: #5A5773; }
.mockup {
  flex-grow: 1;
  box-sizing: border-box;
  border-radius: 20px;
  background: var(--bg);
  border: 1px solid #EEEBF6;
}
.mockup-dark { background: var(--ink); border: 0; }

/* 01 声音克隆 */
.voice-mock { padding: 28px; display: flex; align-items: center; gap: 20px; }
.voice-left { flex-grow: 1; min-width: 0; display: flex; flex-direction: column; gap: 18px; }
.voice-quote {
  margin: 0; padding: 14px 16px; border-radius: 14px; background: #FFFFFF;
  font-size: 14px; line-height: 1.7; color: #3B3854;
}
.wave-rec { height: 60px; gap: 4px; }
.wave-rec span { width: 4px; border-radius: 2px; background: var(--purple); }
.wave-rec span:nth-child(1) { height: 14px; }
.wave-rec span:nth-child(2) { height: 22px; }
.wave-rec span:nth-child(3) { height: 30px; }
.wave-rec span:nth-child(4) { height: 18px; }
.wave-rec span:nth-child(5) { height: 40px; }
.wave-rec span:nth-child(6) { height: 52px; }
.wave-rec span:nth-child(7) { height: 34px; }
.wave-rec span:nth-child(8) { height: 24px; }
.wave-rec span:nth-child(9) { height: 44px; }
.wave-rec span:nth-child(10) { height: 56px; }
.wave-rec span:nth-child(11) { height: 38px; }
.wave-rec span:nth-child(12) { height: 28px; }
.wave-rec span:nth-child(13) { height: 46px; }
.wave-rec span:nth-child(14) { height: 32px; }
.wave-rec span:nth-child(15) { height: 20px; }
.wave-rec span:nth-child(16) { height: 36px; }
.wave-rec span:nth-child(17) { height: 48px; }
.wave-rec span:nth-child(18) { height: 30px; }
.wave-rec span:nth-child(19) { height: 22px; }
.wave-rec span:nth-child(20) { height: 40px; }
.wave-rec span:nth-child(21) { height: 26px; }
.wave-rec span:nth-child(22) { height: 18px; }
.wave-rec span:nth-child(23) { height: 30px; }
.wave-rec span:nth-child(24) { height: 22px; }
.wave-rec span:nth-child(25) { height: 14px; }
.wave-rec span:nth-child(26) { height: 20px; }
.wave-rec span:nth-child(27) { height: 12px; }
.wave-rec span:nth-child(28) { height: 8px; }
.wave-rec span:nth-child(n+19) { background: #CFC5FB; }
.voice-status { display: flex; align-items: center; gap: 10px; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--purple); }
.voice-status .time { font-family: var(--font-mono); font-size: 13px; color: #3B3854; }
.voice-status .state { font-size: 13px; color: #6B6882; }
.voice-arrow {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: 50%;
  background: #FFFFFF; border: 1px solid var(--line); color: var(--purple);
  display: flex; align-items: center; justify-content: center;
}
.voice-card {
  width: 190px; flex-shrink: 0; box-sizing: border-box;
  padding: 20px; border-radius: 18px; background: #FFFFFF; border: 1px solid var(--line);
  display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center;
}
.voice-card-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: #EEEAFE; color: var(--purple);
  display: flex; align-items: center; justify-content: center;
}
.voice-card-text { display: flex; flex-direction: column; gap: 4px; }
.voice-card-text .t { font-size: 16px; font-weight: 700; }
.voice-card-text .s { font-family: var(--font-mono); font-size: 12px; color: #6B6882; }
.voice-play {
  height: 36px; box-sizing: border-box; padding: 0 14px; border: 0; border-radius: 999px;
  background: var(--purple); color: #FFFFFF; font-size: 13px; font-weight: 700;
  display: flex; align-items: center; gap: 6px;
}

/* 02 AI 话术生成 */
.script-mock {
  padding: 20px; display: flex; flex-direction: column; justify-content: center; gap: 10px;
}
.script-input {
  height: 44px; box-sizing: border-box; padding: 0 8px 0 12px; border-radius: 12px;
  background: #FFFFFF; border: 1px solid var(--line);
  display: flex; align-items: center; gap: 10px;
}
.script-input .tag {
  flex-shrink: 0;
  padding: 2px 8px; border-radius: 6px; background: var(--bg);
  font-family: var(--font-mono); font-size: 12px; color: #6B6882;
  white-space: nowrap;
}
.script-input .product {
  flex-grow: 1; min-width: 0; font-size: 14px; color: var(--ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.script-input .gen {
  height: 30px; box-sizing: border-box; padding: 0 12px; border-radius: 8px;
  background: var(--purple); color: #FFFFFF; font-size: 13px; font-weight: 700;
  display: flex; align-items: center; flex-shrink: 0;
}
.script-row {
  padding: 10px 12px; border-radius: 12px; background: #FFFFFF;
  display: flex; align-items: center; gap: 12px;
}
.script-row .grip { flex-shrink: 0; color: #A9A5BE; }
.script-row-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.script-row .t { font-size: 14px; font-weight: 700; }
.script-row .s {
  font-size: 13px; color: #6B6882;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.script-row--gen { border: 1px dashed #CFC6F5; }
.script-row--gen .script-row-body { flex-grow: 1; gap: 8px; }
.script-hint {
  font-family: var(--font-mono); font-size: 12px; color: #6B6882; text-align: center;
}

/* 03 智能问答互动 */
.qa-mock {
  padding: 22px; display: flex; flex-direction: column;
  justify-content: flex-end; align-items: flex-start; gap: 10px;
}
.qa-pill {
  padding: 7px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .08); color: #FFFFFF; font-size: 13px;
}
.qa-pill .name { color: #B9A9FF; }
.qa-pill--active {
  background: rgba(108, 77, 246, .22);
  box-shadow: inset 0 0 0 1px #8C73FF;
}
.qa-pill--active .name { color: #D6CCFF; }
.qa-reply {
  align-self: stretch; margin-top: 6px; padding: 14px 16px;
  border-radius: 4px 16px 16px 16px; background: var(--purple); color: #FFFFFF;
  display: flex; flex-direction: column; gap: 8px;
}
.qa-reply-head { display: flex; align-items: center; gap: 8px; }
.wave-qa { height: 16px; gap: 2px; }
.wave-qa span { width: 2px; }
.wave-qa span:nth-child(1) { height: 6px; }
.wave-qa span:nth-child(2) { height: 12px; animation-delay: -.3s; }
.wave-qa span:nth-child(3) { height: 16px; animation-delay: -.6s; }
.wave-qa span:nth-child(4) { height: 9px; animation-delay: -.9s; }
.wave-qa span:nth-child(5) { height: 13px; animation-delay: -1.2s; }
.qa-reply-status { font-family: var(--font-mono); font-size: 12px; }
.qa-reply-text { font-size: 14px; line-height: 1.6; }

/* 04 AI 助播 */
.assist-mock {
  padding: 24px; display: flex; flex-direction: column; justify-content: center; gap: 12px;
}
.assist-head {
  display: flex; align-items: center; justify-content: space-between; padding: 0 4px 4px;
}
.assist-head-left { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; }
.assist-head-right { font-family: var(--font-mono); font-size: 12px; color: #6B6882; }
.assist-row {
  padding: 14px 18px; border-radius: 14px; background: #FFFFFF;
  display: flex; align-items: center; gap: 16px;
}
.assist-time { font-family: var(--font-mono); font-size: 12px; color: #6B6882; }
.assist-tag {
  width: 48px; flex-shrink: 0; padding: 3px 0; border-radius: 6px;
  font-size: 12px; font-weight: 700; text-align: center;
}
.assist-tag--welcome { background: #EEEAFE; color: var(--purple-deep); }
.assist-tag--clock { background: #FFF0E0; color: #8A4300; }
.assist-tag--reply { background: #E3F3EF; color: #0D5F52; }
.assist-msg {
  flex-grow: 1; min-width: 0; font-size: 14px; color: var(--ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.assist-icon { flex-shrink: 0; }

/* ---------- 真人 + AI 混播（深色区） ---------- */
.mix { margin-top: 136px; background: var(--deep); color: #FFFFFF; }
.mix-inner {
  display: flex; align-items: center; gap: clamp(32px, 5vw, 72px);
  padding-block: clamp(72px, 8.3vw, 120px);
}
.mix-copy { width: clamp(320px, 36.7vw, 470px); flex-shrink: 0; display: flex; flex-direction: column; }
.mix .eyebrow { color: #B9A9FF; }
.mix h2 {
  margin: 20px 0 0; font-size: clamp(36px, 4.2vw, 60px); line-height: 1.15;
  font-weight: 900; color: #FFFFFF;
}
.mix-lead {
  margin: 24px 0 0; font-size: clamp(20px, 1.9vw, 26px); line-height: 1.55;
  font-weight: 500; color: #E7E2FF;
}
.mix-desc { margin: 20px 0 0; font-size: 16px; line-height: 1.8; color: #A9A4C6; }
.mix-legend { margin-top: 36px; display: flex; flex-direction: column; gap: 14px; }
.mix-legend-row { display: flex; align-items: center; gap: 14px; }
.legend-swatch { width: 28px; height: 10px; flex-shrink: 0; border-radius: 5px; }
.legend-swatch--human { background: var(--orange); }
.legend-swatch--ai { background: #7C5CFF; }
.legend-name { font-size: 16px; font-weight: 700; color: #FFFFFF; }
.legend-text { font-size: 15px; color: #A9A4C6; }

.mix-panel {
  flex-grow: 1; min-width: 0; box-sizing: border-box;
  padding: 32px; border-radius: 28px;
  background: #17142F; border: 1px solid rgba(255, 255, 255, .08);
  display: flex; flex-direction: column;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.panel-status { display: flex; align-items: center; gap: 10px; }
.panel-status .live-dot { width: 8px; height: 8px; border-radius: 50%; background: #FF5A6E; }
.panel-status .t { font-size: 14px; font-weight: 700; }
.panel-status .time { font-family: var(--font-mono); font-size: 13px; color: #8E89AD; }
.panel-mode {
  padding: 6px 12px; border-radius: 999px; border: 1px solid rgba(255, 255, 255, .14);
  font-size: 13px; color: #E7E2FF;
}
.now {
  margin-top: 28px; padding: 16px 18px; border-radius: 18px;
  background: rgba(255, 255, 255, .04);
  display: flex; align-items: center; gap: 14px;
}
.now-avatar {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 50%;
  background: #7C5CFF; color: #FFFFFF;
  font-family: var(--font-brand); font-size: 15px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.now-text { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.now-text .t { font-size: 15px; font-weight: 700; }
.now-text .s { font-family: var(--font-mono); font-size: 12px; color: #8E89AD; }
.now-wave { margin-left: auto; height: 36px; gap: 3px; }
.now-wave span { width: 3px; border-radius: 2px; background: #B9A9FF; }
.now-wave span:nth-child(1) { height: 10px; }
.now-wave span:nth-child(2) { height: 18px; animation-delay: -.1s; }
.now-wave span:nth-child(3) { height: 26px; animation-delay: -.2s; }
.now-wave span:nth-child(4) { height: 14px; animation-delay: -.3s; }
.now-wave span:nth-child(5) { height: 30px; animation-delay: -.4s; }
.now-wave span:nth-child(6) { height: 22px; animation-delay: -.5s; }
.now-wave span:nth-child(7) { height: 34px; animation-delay: -.6s; }
.now-wave span:nth-child(8) { height: 16px; animation-delay: -.7s; }
.now-wave span:nth-child(9) { height: 28px; animation-delay: -.8s; }
.now-wave span:nth-child(10) { height: 20px; animation-delay: -.9s; }
.now-wave span:nth-child(11) { height: 12px; animation-delay: -1s; }
.now-wave span:nth-child(12) { height: 24px; animation-delay: -1.1s; }
.now-wave span:nth-child(13) { height: 32px; animation-delay: -1.2s; }
.now-wave span:nth-child(14) { height: 18px; animation-delay: -1.3s; }
.now-wave span:nth-child(15) { height: 26px; animation-delay: -1.4s; }
.now-wave span:nth-child(16) { height: 14px; animation-delay: -1.5s; }
.now-wave span:nth-child(17) { height: 22px; animation-delay: -1.6s; }
.now-wave span:nth-child(18) { height: 10px; animation-delay: -1.7s; }

.timeline { position: relative; margin-top: 32px; display: flex; flex-direction: column; gap: 14px; }
.track-row { display: flex; align-items: center; gap: 16px; }
.track-label { width: 56px; flex-shrink: 0; font-size: 14px; font-weight: 700; }
.track-label--human { color: #FFC98A; }
.track-label--ai { color: #C9BCFF; }
.track { position: relative; flex-grow: 1; height: 36px; border-radius: 10px; background: rgba(255, 255, 255, .04); }
.seg { position: absolute; top: 4px; bottom: 4px; border-radius: 8px; }
.track--human .seg {
  background-color: var(--orange);
  background-image: repeating-linear-gradient(90deg, rgba(14, 12, 32, .16) 0 2px, transparent 2px 6px);
}
.track--human .seg:nth-child(1) { left: 0; width: 16.5%; }
.track--human .seg:nth-child(2) { left: 33.5%; width: 11%; }
.track--human .seg:nth-child(3) { left: 69.5%; width: 13%; }
.track--ai .seg {
  background-color: #7C5CFF;
  background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, .16) 0 2px, transparent 2px 6px);
}
.track--ai .seg:nth-child(1) { left: 17%; width: 16%; }
.track--ai .seg:nth-child(2) { left: 45%; width: 24%; }
.track--ai .seg:nth-child(3) { left: 83%; width: 17%; }
.ticks {
  margin-left: 72px; display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 12px; color: #8E89AD;
}
.playhead {
  position: absolute; left: calc(72px + (100% - 72px) * .58); top: -12px;
  height: 104px; width: 2px; margin-left: -1px; background: #FFFFFF;
}
.playhead-dot {
  position: absolute; left: -4px; top: -4px; width: 10px; height: 10px;
  border-radius: 50%; background: #FFFFFF;
}
.mix-actions { margin-top: 32px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.mix-btn {
  height: 52px; box-sizing: border-box; border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, .1); background: rgba(255, 255, 255, .06);
  color: #FFFFFF; font-size: 15px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.mix-btn--accent { border-color: rgba(255, 180, 94, .55); background: rgba(255, 180, 94, .1); }

/* ---------- 多平台开播 ---------- */
.platforms { padding-top: 136px; display: flex; flex-direction: column; align-items: center; }
.platforms h2 {
  margin: 18px 0 0; font-size: clamp(30px, 4vw, 52px); line-height: 1.2;
  font-weight: 900; text-align: center;
}
.platforms-sub {
  margin: 20px 0 0; max-width: 640px; font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.75; color: #5A5773; text-align: center; text-wrap: balance;
}
.plat-viewport { margin-top: 64px; width: 100%; min-width: 0; overflow: hidden; height: 380px; }
.plat-stage { position: relative; width: 1280px; height: 380px; margin: 0; margin-inline: calc((100% - 1280px) / 2); transform-origin: top center; }
.plat-svg-h { position: absolute; left: 0; top: 0; }
.plat-svg-v { display: none; }
.plat-config {
  position: absolute; left: 0; top: 27px; width: 360px; box-sizing: border-box;
  padding: 24px; border-radius: 24px; background: #FFFFFF; border: 1px solid var(--line);
  box-shadow: 0 24px 50px -30px rgba(38, 20, 120, .3);
  display: flex; flex-direction: column; gap: 10px;
}
.plat-config-head { display: flex; align-items: center; gap: 10px; padding-bottom: 6px; font-size: 16px; font-weight: 700; }
.plat-row {
  height: 52px; box-sizing: border-box; padding: 0 14px; border-radius: 12px;
  background: var(--bg); display: flex; align-items: center; gap: 12px;
}
.plat-row .k {
  width: 40px; flex-shrink: 0; font-family: var(--font-mono); font-size: 12px; color: var(--purple-deep);
}
.plat-row .v { font-size: 14px; color: var(--ink); }
.plat-node {
  position: absolute; left: 560px; top: 130px; width: 120px; height: 120px; border-radius: 50%;
  background: var(--purple); color: #FFFFFF;
  box-shadow: 0 0 0 12px rgba(108, 77, 246, .12), 0 0 0 28px rgba(108, 77, 246, .06);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
}
.plat-node-label { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; }
.plat-list {
  position: absolute; left: 880px; top: 46px; width: 400px;
  display: flex; flex-direction: column; gap: 16px;
}
.plat-item {
  height: 60px; box-sizing: border-box; padding: 0 20px; border-radius: 16px;
  border: 1px solid var(--line); background: #FFFFFF;
  box-shadow: 0 16px 32px -24px rgba(38, 20, 120, .3);
  display: flex; align-items: center; gap: 14px;
}
.plat-item-icon {
  width: 34px; height: 34px; flex-shrink: 0; border-radius: 10px;
  background: #EEEAFE; color: var(--purple);
  display: flex; align-items: center; justify-content: center;
}
.plat-item-name { flex-grow: 1; font-size: 16px; font-weight: 700; color: #3B3854; }
.plat-item-status {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 12px; color: var(--purple-deep);
}
.plat-item-status::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--purple);
}

/* ---------- CTA ---------- */
.cta { padding-top: 136px; }
.cta-card {
  position: relative; box-sizing: border-box;
  padding: 88px 80px; border-radius: 40px;
  background: var(--purple); color: #FFFFFF; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
.cta-ring { position: absolute; box-sizing: border-box; border-radius: 50%; }
.cta-ring--1 { right: -160px; top: -200px; width: 520px; height: 520px; border: 1px solid rgba(255, 255, 255, .2); }
.cta-ring--2 { right: -260px; top: -300px; width: 720px; height: 720px; border: 1px solid rgba(255, 255, 255, .12); }
.cta-ring--3 { left: -200px; bottom: -260px; width: 560px; height: 560px; border: 1px solid rgba(255, 255, 255, .14); }
.cta-logo { position: relative; }
.cta h2 {
  position: relative; margin: 24px 0 0;
  font-size: clamp(30px, 4vw, 56px); line-height: 1.2; font-weight: 900; color: #FFFFFF;
}
.cta-sub { position: relative; margin: 16px 0 0; font-size: clamp(15px, 1.5vw, 20px); line-height: 1.6; color: #F1EDFF; }
.cta-actions { position: relative; margin-top: 40px; display: flex; align-items: center; gap: 16px; }
.btn-cta {
  height: 56px; padding: 0 32px; border-radius: 14px;
  background: #FFFFFF; color: var(--purple-deep); font-size: 17px;
}
.btn-cta-ghost {
  height: 56px; padding: 0 28px; border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, .55); color: #FFFFFF; font-size: 17px; font-weight: 500;
}
.btn-cta-ghost:hover { color: #FFFFFF; border-color: #FFFFFF; }

/* ---------- Footer ---------- */
.site-footer { padding-block: 64px 48px; }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .name { font-size: 18px; font-weight: 900; }
.footer-brand .tag { font-family: var(--font-brand); font-size: 14px; font-weight: 500; color: #6B6882; }
.footer-nav { display: flex; align-items: center; gap: 32px; padding-top: 4px; }
.footer-nav a { font-size: 14px; color: #5A5773; }
.footer-nav a:hover { color: var(--purple-deep); }
.footer-copy {
  padding-top: 4px; font-family: var(--font-mono); font-size: 13px; color: #6B6882;
}

/* ---------- 文档页 ---------- */
.doc-main { padding-block: 72px 96px; }
.doc { max-width: 720px; margin: 0 auto; }
.doc h1 { margin: 0; font-size: clamp(30px, 4vw, 44px); line-height: 1.25; font-weight: 900; }
.doc-body { margin-top: 32px; }
.doc-body h2 { margin: 2em 0 .6em; font-size: 22px; font-weight: 800; }
.doc-body p { margin: .9em 0; font-size: 16px; line-height: 1.9; color: #3B3854; }

/* ---------- 中间宽度：舞台整体缩放（避免横向滚动） ----------
   内容区可用宽 = 100vw - 2×5.55vw = 0.889×100vw，故缩放比 s 需满足 s ≤ w/1440，
   各断点取 w ≥ 1440s 处切换。 */
@media (max-width: 1439px) {
  .hero-stage, .plat-stage { transform: scale(.92); }
  .hero-viewport { height: 699px; }
  .plat-viewport { height: 350px; }
}
@media (max-width: 1324px) {
  .hero-stage, .plat-stage { transform: scale(.84); }
  .hero-viewport { height: 638px; }
  .plat-viewport { height: 319px; }
}
@media (max-width: 1209px) {
  .hero-stage, .plat-stage { transform: scale(.76); }
  .hero-viewport { height: 578px; }
  .plat-viewport { height: 289px; }
}
@media (max-width: 1100px) {
  .voice-mock { flex-direction: column; align-items: stretch; }
  .voice-arrow { display: none; }
  .voice-card { width: 100%; flex-direction: row; text-align: left; align-items: center; }
  .voice-card-text { flex-grow: 1; align-items: flex-start; text-align: left; }
}
@media (max-width: 1094px) {
  .hero-stage, .plat-stage { transform: scale(.68); }
  .hero-viewport { height: 517px; }
  .plat-viewport { height: 259px; }
}
@media (max-width: 979px) {
  .hero-stage, .plat-stage { transform: scale(.6); }
  .hero-viewport { height: 456px; }
  .plat-viewport { height: 228px; }
}
@media (max-width: 863px) {
  .hero-stage, .plat-stage { transform: scale(.53); }
  .hero-viewport { height: 403px; }
  .plat-viewport { height: 202px; }
}

/* ---------- 移动端（<768px，按 390 画板还原） ---------- */
@media (max-width: 767px) {
  .only-mobile { display: block; }

  /* Header */
  .site-header { height: 64px; padding: 0 12px 0 20px; }
  .brand { gap: 8px; }
  .brand-logo { width: 28px; height: 28px; }
  .brand-name { font-size: 19px; }
  .brand-tag { font-size: 14px; }
  .header-actions { gap: 4px; }
  .btn-primary { height: 44px; padding: 0 16px; font-size: 14px; }
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute; top: 64px; left: 0; right: 0; z-index: 60;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px; box-shadow: 0 24px 40px -24px rgba(38, 20, 120, .25);
  }
  .site-nav a { padding: 12px 0; font-size: 15px; border-top: 1px solid #EEEBF6; }
  .site-nav a:first-child { border-top: 0; }
  html.js .site-nav { display: none; }
  html.js .site-nav.is-open { display: flex; }

  /* Hero */
  .hero { padding-top: 44px; }
  .hero-title { padding-inline: 20px; }
  .hero-sub { padding-inline: 24px; }
  .hero-bg {
    height: 820px;
    background-size: 30px 30px;
    background-position: 15px 0;
    -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 30%, #000 20%, transparent 75%);
    mask-image: radial-gradient(ellipse 80% 50% at 50% 30%, #000 20%, transparent 75%);
  }
  .badge { gap: 8px; padding: 5px 14px 5px 5px; }
  .badge-tag { padding: 3px 9px; letter-spacing: .06em; }
  .badge-text { font-size: 13px; }
  .hero-title { margin-top: 20px; font-size: 40px; line-height: 1.22; }
  .hero-sub { margin-top: 16px; font-size: 16px; line-height: 1.75; }
  .hero-sub br { display: none; }
  .hero-cta { margin-top: 28px; width: min(350px, calc(100% - 40px)); flex-direction: column; gap: 12px; }
  .btn-hero, .btn-hero-ghost { width: 100%; height: 52px; padding: 0; font-size: 16px; }

  .hero-viewport { margin-top: 40px; height: 600px; overflow: hidden; }
  .hero-stage {
    transform: none; width: 390px; height: 600px; overflow: hidden;
    margin-inline: calc((100% - 390px) / 2);
  }
  .stage-glow { left: 45px; top: 60px; width: 300px; height: 420px; }
  .stage-ring { left: -70px; top: 250px; width: 530px; height: 160px; transform: rotate(-8deg); }
  .stage-dot { display: none; }
  .phone-left {
    left: -14px; top: 84px; width: 200px; height: 438px; padding: 7px;
    border-radius: 32px; transform: rotate(-8deg);
    box-shadow: 0 30px 50px -24px rgba(38, 20, 120, .45);
  }
  .phone-left .phone-screen { border-radius: 26px; }
  .phone-right {
    left: 128px; top: 24px; width: 240px; height: 521px; padding: 9px; border-radius: 40px;
    box-shadow: 0 40px 70px -24px rgba(38, 20, 120, .55), inset 0 0 0 2px rgba(255, 255, 255, .08);
  }
  .phone-right .phone-screen { border-radius: 32px; }
  .card-voice {
    left: 12px; top: 150px; width: 180px; padding: 10px 12px; border-radius: 14px; gap: 10px;
    box-shadow: 0 20px 40px -20px rgba(38, 20, 120, .4);
  }
  .card-voice-icon { width: 32px; height: 32px; }
  .card-voice-icon svg { width: 13px; height: 13px; }
  .card-voice-text { gap: 1px; }
  .card-voice-text .t { font-size: 14px; }
  .card-script { display: none; }
  .card-chat {
    left: 172px; top: 372px; width: 206px; padding: 14px; border-radius: 18px; gap: 10px;
    box-shadow: 0 24px 50px -20px rgba(19, 17, 42, .6);
  }
  .chat-q { align-items: flex-start; gap: 8px; }
  .chat-avatar { width: 24px; height: 24px; font-size: 12px; }
  .chat-q-text { font-size: 13px; line-height: 1.5; }
  .chat-a { padding: 10px 12px; border-radius: 4px 14px 14px 14px; gap: 6px; }
  .chat-a-head { gap: 6px; }
  .wave-chat { height: 14px; }
  .wave-chat span:nth-child(1) { height: 5px; }
  .wave-chat span:nth-child(2) { height: 10px; animation-delay: -.3s; }
  .wave-chat span:nth-child(3) { height: 14px; animation-delay: -.6s; }
  .wave-chat span:nth-child(4) { height: 8px; animation-delay: -.9s; }
  .wave-chat span:nth-child(5) { height: 11px; animation-delay: -1.2s; }
  .wave-chat span:nth-child(n+6) { display: none; }
  .chat-a-text { font-size: 13px; }
  .stage-fade { left: 0; width: 100%; height: 150px; background: linear-gradient(180deg, rgba(246, 245, 251, 0) 0%, var(--bg) 90%); }

  /* 产品价值 */
  .values-grid { grid-template-columns: minmax(0, 1fr); border-bottom: 0; }
  .value { padding: 20px 0; gap: 16px; border-bottom: 1px solid #E1DDF0; }
  .value + .value { border-left: 0; }
  .value-icon { width: 40px; height: 40px; }
  .value-icon svg { width: 20px; height: 20px; }
  .value-text-wrap { gap: 4px; }
  .value-title { font-size: 18px; }
  .value-text { font-size: 14px; line-height: 1.65; }

  /* 核心能力 */
  .features { padding-top: 80px; }
  .features-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .features .eyebrow { font-size: 12px; }
  .features h2 { font-size: 32px; line-height: 1.25; }
  .features-sub { font-size: 15px; max-width: none; }
  .features-grid { margin-top: 32px; grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .span-7, .span-5 { grid-column: auto; }
  .feature-card { min-height: 0; padding: 24px; border-radius: 24px; gap: 20px; }
  .feature-head { gap: 10px; }
  .feature-title-row { gap: 10px; }
  .feature-num { padding: 3px 9px; font-size: 12px; }
  .feature-card h3 { font-size: 22px; }
  .feature-desc { font-size: 15px; }
  .mockup { border-radius: 16px; }

  .voice-mock { padding: 18px; gap: 14px; }
  .voice-left { gap: 14px; }
  .voice-quote { padding: 12px 14px; border-radius: 12px; font-size: 13px; }
  .wave-rec { height: 56px; justify-content: center; }
  .voice-status { justify-content: center; }
  .voice-card { padding: 12px; border-radius: 14px; gap: 10px; }
  .voice-card-icon { width: 40px; height: 40px; }
  .voice-card-icon svg { width: 20px; height: 20px; }
  .voice-card-text { gap: 2px; }
  .voice-card-text .t { font-size: 15px; }
  .voice-play { height: 44px; white-space: nowrap; }

  .script-mock { padding: 16px; justify-content: flex-start; }
  .script-input { padding: 0 6px 0 10px; gap: 8px; }
  .script-input .tag { padding: 2px 7px; }
  .script-input .product { font-size: 13px; }
  .script-input .gen { padding: 0 10px; }
  .script-row { gap: 10px; }
  .script-hint { display: none; }

  .qa-mock { padding: 18px; justify-content: flex-start; gap: 8px; }
  .qa-pill { padding: 6px 12px; }
  .qa-reply { margin-top: 4px; padding: 12px 14px; border-radius: 4px 14px 14px 14px; gap: 6px; }
  .wave-qa { height: 14px; }
  .wave-qa span:nth-child(1) { height: 5px; }
  .wave-qa span:nth-child(2) { height: 10px; }
  .wave-qa span:nth-child(3) { height: 14px; }
  .wave-qa span:nth-child(4) { height: 8px; }
  .wave-qa span:nth-child(5) { height: 11px; }

  .assist-mock { padding: 16px; gap: 10px; }
  .assist-head { padding: 0 2px 2px; }
  .assist-row { flex-wrap: wrap; padding: 12px 14px; border-radius: 12px; gap: 6px 10px; }
  .assist-tag { order: 1; width: 44px; padding: 2px 0; }
  .assist-time { order: 2; }
  .assist-icon { order: 3; margin-left: auto; }
  .assist-msg { order: 4; flex-basis: 100%; white-space: normal; line-height: 1.6; }

  /* 真人 + AI 混播 */
  .mix { margin-top: 80px; }
  .mix-inner { flex-direction: column; align-items: stretch; gap: 36px; padding-block: 72px; }
  .mix-copy { width: 100%; }
  .mix .eyebrow { font-size: 12px; }
  .mix h2 { margin-top: 16px; font-size: 36px; line-height: 1.2; }
  .mix-lead { margin-top: 18px; font-size: 20px; line-height: 1.6; }
  .mix-desc { margin-top: 14px; font-size: 15px; }
  .mix-legend { margin-top: 24px; gap: 12px; }
  .mix-legend-row { gap: 12px; }
  .legend-swatch { width: 24px; height: 8px; border-radius: 4px; }
  .legend-name { font-size: 15px; }
  .legend-text { font-size: 14px; }
  .mix-panel { width: 100%; padding: 20px; border-radius: 22px; }
  .panel-status { gap: 8px; }
  .panel-status .time { font-size: 12px; }
  .panel-mode { padding: 5px 10px; font-size: 12px; }
  .now { margin-top: 18px; padding: 12px 14px; border-radius: 14px; gap: 12px; }
  .now-avatar { width: 38px; height: 38px; font-size: 14px; }
  .now-text { gap: 3px; }
  .now-text .t { font-size: 14px; }
  .now-wave { height: 28px; }
  .now-wave span:nth-child(n+10) { display: none; }
  .now-wave span:nth-child(1) { height: 10px; }
  .now-wave span:nth-child(2) { height: 18px; animation-delay: -.15s; }
  .now-wave span:nth-child(3) { height: 26px; animation-delay: -.3s; }
  .now-wave span:nth-child(4) { height: 14px; animation-delay: -.45s; }
  .now-wave span:nth-child(5) { height: 22px; animation-delay: -.6s; }
  .now-wave span:nth-child(6) { height: 28px; animation-delay: -.75s; }
  .now-wave span:nth-child(7) { height: 16px; animation-delay: -.9s; }
  .now-wave span:nth-child(8) { height: 20px; animation-delay: -1.05s; }
  .now-wave span:nth-child(9) { height: 10px; animation-delay: -1.2s; }
  .timeline { margin-top: 24px; gap: 12px; }
  .track-row { gap: 10px; }
  .track-label { width: 36px; font-size: 13px; }
  .track { height: 32px; border-radius: 9px; }
  .seg { border-radius: 7px; }
  .ticks { margin-left: 46px; }
  .tick-mid { display: none; }
  .playhead { left: calc(46px + (100% - 46px) * .58); top: -10px; height: 90px; }
  .mix-actions { margin-top: 24px; gap: 8px; }
  .mix-btn { height: 48px; padding: 0; border-radius: 12px; font-size: 14px; gap: 6px; }

  /* 多平台开播 */
  .platforms { padding-top: 80px; }
  .platforms .eyebrow { font-size: 12px; }
  .platforms h2 { margin-top: 14px; font-size: 32px; line-height: 1.25; }
  .platforms-sub { margin-top: 14px; font-size: 15px; line-height: 1.8; }
  .plat-viewport { margin-top: 32px; height: auto; overflow: visible; }
  .plat-stage {
    position: static; transform: none; width: 350px; max-width: 100%; height: auto;
    margin-inline: auto;
    display: flex; flex-direction: column; align-items: center;
  }
  .plat-svg-h { display: none; }
  .plat-svg-v { display: block; width: 350px; max-width: 100%; height: 56px; }
  .plat-config {
    position: static; width: 100%; padding: 20px; border-radius: 20px; gap: 8px;
  }
  .plat-config-head { font-size: 15px; }
  .plat-row { height: 46px; padding: 0 12px; }
  .plat-row .k { width: 36px; }
  .plat-node {
    position: static; width: 92px; height: 92px; gap: 4px;
    box-shadow: 0 0 0 10px rgba(108, 77, 246, .12), 0 0 0 22px rgba(108, 77, 246, .06);
  }
  .plat-list {
    position: static; width: 100%;
    display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px;
  }
  .plat-item {
    height: auto; padding: 16px; flex-direction: column; align-items: flex-start; gap: 10px;
  }
  .plat-item-name { flex-grow: 0; color: var(--ink); }

  /* CTA */
  .cta { padding-top: 80px; }
  .cta-card { padding: 48px 24px; border-radius: 28px; }
  .cta-ring--1 { right: -140px; top: -140px; width: 320px; height: 320px; }
  .cta-ring--2 { right: -210px; top: -210px; width: 460px; height: 460px; }
  .cta-ring--3 { left: -160px; bottom: -200px; width: 360px; height: 360px; }
  .cta-logo { width: 40px; height: 40px; }
  .cta h2 { margin-top: 20px; font-size: 30px; line-height: 1.3; }
  .cta-sub { margin-top: 12px; font-size: 15px; line-height: 1.7; }
  .cta-actions { margin-top: 28px; width: 100%; flex-direction: column; gap: 12px; }
  .btn-cta, .btn-cta-ghost { width: 100%; height: 52px; padding: 0; font-size: 16px; }

  /* Footer */
  .site-footer { padding-block: 48px 40px; }
  .footer-inner { flex-direction: column; gap: 20px; }
  .footer-brand { gap: 10px; }
  .footer-logo { width: 26px; height: 26px; }
  .footer-brand .name { font-size: 17px; }
  .footer-brand .tag { font-size: 13px; }
  .footer-nav { gap: 24px; padding-top: 0; }
  .footer-copy { padding-top: 0; font-size: 12px; }

  /* 文档页 */
  .doc-main { padding-block: 48px 72px; }
  .doc-body h2 { font-size: 20px; }
  .doc-body p { font-size: 15px; }
}

/* 超窄屏（<390）：hero 舞台按比例缩小 */
@media (max-width: 389px) {
  .hero-stage { transform: scale(.92); }
  .hero-viewport { height: 552px; }
}
@media (max-width: 359px) {
  .hero-stage { transform: scale(.84); }
  .hero-viewport { height: 504px; }
}
@media (max-width: 327px) {
  .hero-stage { transform: scale(.78); }
  .hero-viewport { height: 468px; }
}