/* =========================================================
   银河E8 车友空间
   设计语言：破晓黑底色 · 车漆主题色 · 旭日东升贯穿光带 · 32:9 无界巨幕
   ========================================================= */

:root {
  --bg: #07080b;
  --bg-2: #0d0f14;
  --bg-3: #141720;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #eef0f4;
  --text-2: #a4a9b4;
  --text-3: #6b717d;

  /* 车漆主题色（默认：空濛蓝），由 body[data-paint] 覆盖 */
  --accent: #8fa9c9;
  --accent-hi: #c4d5ea;
  --accent-ink: #0b1220;
  --accent-soft: rgba(143, 169, 201, 0.14);

  --radius: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
}

:root {
  /* 夜间（破晓黑） */
  --nav-bg: rgba(7, 8, 11, 0.72);
  --nav-solid: rgba(7, 8, 11, 0.96);
  --panel: rgba(13, 15, 20, 0.6);
  --pleat-hi: rgba(255, 255, 255, 0.028);
  --pleat-lo: rgba(0, 0, 0, 0.25);
  --icon-deep: #1a1d26;
  --frame: linear-gradient(180deg, #1b1e26, #0b0c10);
  --frame-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(0, 0, 0, 0.6) inset;
  --glare: rgba(255, 255, 255, 0.06);
  --ui-bg: #07080c;
  --ui-tile: rgba(255, 255, 255, 0.035);
  --ui-line: rgba(255, 255, 255, 0.08);
  --ui-shadow: none;
  --ui-chip: rgba(255, 255, 255, 0.08);
  --ui-float: rgba(10, 11, 16, 0.85);
  --map-bg: #12151d;
  --road: #232836;
  --road-thin: #1c2029;
  --hud-text: var(--text);
  --hud-sub: var(--text-2);
  --star: #ffffff;
  --star-alpha: 1;
  color-scheme: dark;
}

/* 白天（初霁白）：车机界面示意沿用 E8 Play 日间皮肤 —— 浅灰底、白卡片、柔和投影 */
:root[data-theme="light"] {
  --bg: #f3f4f1;
  --bg-2: #fbfbf9;
  --bg-3: #e8eae5;
  --line: rgba(20, 24, 30, 0.08);
  --line-2: rgba(20, 24, 30, 0.15);
  --text: #15181d;
  --text-2: #4f555e;
  --text-3: #858a92;
  --nav-bg: rgba(243, 244, 241, 0.75);
  --nav-solid: rgba(243, 244, 241, 0.97);
  --panel: rgba(255, 255, 255, 0.72);
  --pleat-hi: rgba(255, 255, 255, 0.75);
  --pleat-lo: rgba(20, 24, 30, 0.045);
  --icon-deep: #d8dbd4;
  --frame: linear-gradient(180deg, #ffffff, #e4e6e1);
  --frame-shadow: 0 40px 80px -40px rgba(30, 40, 60, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.9) inset;
  --glare: rgba(255, 255, 255, 0.35);
  --ui-bg: #eef0f2;
  --ui-tile: #ffffff;
  --ui-line: rgba(20, 24, 30, 0.05);
  --ui-shadow: 0 0.3em 1.2em rgba(30, 40, 60, 0.08);
  --ui-chip: #e1e4e8;
  --ui-float: rgba(255, 255, 255, 0.94);
  --map-bg: #e7eaee;
  --road: #ffffff;
  --road-thin: #f5f6f8;
  --star: #3a4150;
  --star-alpha: 0.35;
  color-scheme: light;
}
:root[data-theme="light"] body                            { --accent: #4a6b94; --accent-hi: #6b8bb3; --accent-ink: #ffffff; --accent-soft: rgba(74, 107, 148, 0.12); }
:root[data-theme="light"] body[data-paint="haitang"]      { --accent: #b85a68; --accent-hi: #cf7a87; --accent-ink: #ffffff; --accent-soft: rgba(184, 90, 104, 0.12); }
:root[data-theme="light"] body[data-paint="xingji"]       { --accent: #c45f22; --accent-hi: #dc7c40; --accent-ink: #ffffff; --accent-soft: rgba(196, 95, 34, 0.12); }
:root[data-theme="light"] body[data-paint="liushuang"]    { --accent: #5e6b5c; --accent-hi: #7c8a79; --accent-ink: #ffffff; --accent-soft: rgba(94, 107, 92, 0.12); }

body[data-paint="haitang"]   { --accent: #e3a9b0; --accent-hi: #f6d3d7; --accent-ink: #2a1114; --accent-soft: rgba(227, 169, 176, 0.14); }
body[data-paint="xingji"]    { --accent: #e8894a; --accent-hi: #f7c19b; --accent-ink: #2a1306; --accent-soft: rgba(232, 137, 74, 0.14); }
body[data-paint="liushuang"] { --accent: #dfe3dc; --accent-hi: #ffffff;  --accent-ink: #121410; --accent-soft: rgba(223, 227, 220, 0.12); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: 0.02em; }
p { margin: 0; }
button { font: inherit; color: inherit; cursor: pointer; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: min(1200px, 100% - 32px); margin-inline: auto; }
.wrap--narrow { width: min(820px, 100% - 32px); }
.m-only { display: none; }

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
  transition: color 0.6s;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 28px;
  border-radius: 999px;
  font-size: 15px; letter-spacing: 0.08em;
  border: 1px solid transparent;
  transition: background 0.3s, color 0.3s, border-color 0.3s, transform 0.3s var(--ease), box-shadow 0.3s;
  white-space: nowrap;
}
.btn--sm { height: 36px; padding: 0 18px; font-size: 14px; }
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--accent-hi); transform: translateY(-1px); box-shadow: 0 10px 30px -10px var(--accent); }
.btn--ghost { border-color: var(--line-2); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-hi); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: var(--nav-bg);
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  border-color: var(--line);
}
.nav__inner {
  width: min(1200px, 100% - 32px); margin-inline: auto;
  height: 68px; display: flex; align-items: center; gap: 40px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 600; letter-spacing: 0.12em; }
.brand__mark {
  width: 28px; height: 10px; border-radius: 3px; position: relative;
  border: 1.5px solid var(--text);
}
.brand__mark::after {
  content: ""; position: absolute; left: -6px; right: -6px; top: 50%; height: 1.5px;
  background: var(--accent); transform: translateY(-50%);
  box-shadow: 0 0 8px var(--accent);
  transition: background 0.6s, box-shadow 0.6s;
}
.brand__text { font-size: 15px; }
.nav__links { display: flex; gap: 32px; margin-left: auto; font-size: 14px; color: var(--text-2); }
.nav__links a { position: relative; padding: 6px 0; transition: color 0.3s; }
.nav__links a::after {
  content: ""; position: absolute; left: 50%; right: 50%; bottom: 0; height: 1px;
  background: var(--accent); transition: left 0.35s var(--ease), right 0.35s var(--ease);
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { left: 0; right: 0; }
.nav__toggle { display: none; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative; min-height: 100svh; overflow: hidden;
  display: grid; place-items: center;
  padding: 120px 0 160px;
  isolation: isolate;
}
/* 竖向褶皱幕帘，呼应官网首屏的黑色立体背景 */
.hero__pleats {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(ellipse 70% 55% at 50% 100%, var(--accent-soft), transparent 70%),
    repeating-linear-gradient(90deg,
      transparent 0px, var(--pleat-hi) 14px,
      var(--pleat-lo) 28px, transparent 42px);
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), rgba(0,0,0,0.35) 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), rgba(0,0,0,0.35) 70%, transparent);
  transition: background 0.6s;
}
.hero__stars { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; opacity: 0.7; }
.hero__content { text-align: center; padding: 0 16px; }
.hero__title {
  font-size: clamp(48px, 9vw, 120px);
  line-height: 1.05; font-weight: 600; letter-spacing: 0.06em;
  margin-bottom: 28px;
}
.hero__title span {
  font-weight: 300; letter-spacing: 0.3em; margin-right: -0.3em;
  font-size: 0.48em;
  background: linear-gradient(90deg, var(--text-2), var(--accent-hi), var(--text-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lede { color: var(--text-2); font-size: clamp(15px, 1.6vw, 18px); letter-spacing: 0.08em; margin-bottom: 44px; }
.hero__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 旭日东升 —— 贯穿式光带 */
.sunrise {
  position: absolute; left: 0; right: 0; bottom: 120px; height: 2px;
  display: flex; justify-content: center; pointer-events: none;
}
.sunrise i {
  display: block; height: 2px; width: 0%;
  background: linear-gradient(90deg, transparent, var(--accent) 18%, var(--accent-hi) 50%, var(--accent) 82%, transparent);
  box-shadow: 0 0 18px 2px var(--accent), 0 0 60px 6px var(--accent-soft);
  border-radius: 2px;
  transition: background 0.6s, box-shadow 0.6s;
}
.is-loaded .hero .sunrise i { animation: sunrise 2.2s 0.3s var(--ease) forwards; }
@keyframes sunrise { to { width: 92%; } }

.paint {
  position: absolute; bottom: 44px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 14px;
  padding: 8px 10px 8px 18px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--panel);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.paint__label { font-size: 12px; letter-spacing: 0.2em; color: var(--text-3); }
.paint__chip {
  position: relative; width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff8, transparent 55%), var(--c);
  border: 0; padding: 0;
  box-shadow: 0 0 0 1px var(--line-2);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.paint__chip:hover { transform: scale(1.12); }
.paint__chip.is-active { box-shadow: 0 0 0 2px var(--bg), 0 0 0 3.5px var(--c); }
.paint__chip em {
  position: absolute; bottom: calc(100% + 12px); left: 50%; transform: translate(-50%, 4px);
  font-style: normal; font-size: 12px; white-space: nowrap; letter-spacing: 0.1em;
  padding: 4px 10px; border-radius: 6px; background: var(--bg-3); color: var(--text);
  opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;
}
.paint__chip:hover em, .paint__chip:focus-visible em { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 设计理念 ---------- */
.ethos { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.ethos__grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.ethos__item { padding: 56px 40px; border-left: 1px solid var(--line); }
.ethos__item:first-child { border-left: 0; padding-left: 0; }
.ethos__no { font-size: 12px; color: var(--accent); letter-spacing: 0.2em; transition: color 0.6s; }
.ethos__item h3 { font-size: 20px; margin: 10px 0 10px; }
.ethos__item p { color: var(--text-2); font-size: 14px; }

/* ---------- 通用区块头 ---------- */
section { scroll-margin-top: 68px; }
.section-head { text-align: center; margin-bottom: 64px; }
.section-head h2 { font-size: clamp(30px, 4vw, 48px); letter-spacing: 0.06em; }
.section-head__sub { color: var(--text-2); margin-top: 14px; }

/* ---------- 产品卡片 ---------- */
.products { padding: 140px 0 120px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  position: relative; display: flex; flex-direction: column;
  padding: 36px 32px 32px; border-radius: var(--radius);
  background: linear-gradient(180deg, var(--bg-2), var(--bg));
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.4s, transform 0.5s var(--ease);
}
.card::before {
  content: ""; position: absolute; left: 32px; right: 32px; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity 0.4s, background 0.6s;
}
.card:hover { border-color: var(--line-2); transform: translateY(-4px); }
.card:hover::before { opacity: 1; }
.card h3 { font-size: 24px; margin: 18px 0 10px; }
.card p { color: var(--text-2); font-size: 15px; flex: 1; }
.card__more { margin-top: 28px; font-size: 14px; color: var(--accent); letter-spacing: 0.1em; transition: color 0.6s; }
.card__more::after { content: " →"; display: inline-block; transition: transform 0.3s var(--ease); }
.card:hover .card__more::after { transform: translateX(4px); }

.card__icon { width: 56px; height: 56px; border-radius: 16px; position: relative; margin-bottom: 26px; background: var(--bg-3); border: 1px solid var(--line-2); }
.card__icon::before, .card__icon::after { content: ""; position: absolute; transition: background 0.6s, border-color 0.6s; }
.card__icon--helper::before { inset: 14px; border-radius: 4px; background:
  linear-gradient(var(--accent), var(--accent)) 0 0 / 11px 11px no-repeat,
  linear-gradient(var(--text-2), var(--text-2)) 100% 0 / 11px 11px no-repeat,
  linear-gradient(var(--text-2), var(--text-2)) 0 100% / 11px 11px no-repeat,
  linear-gradient(var(--text-2), var(--text-2)) 100% 100% / 11px 11px no-repeat; }
.card__icon--desktop::before { inset: 12px; border-radius: 6px; background: linear-gradient(160deg, var(--accent-hi), var(--accent) 50%, var(--icon-deep)); }
.card__icon--desktop::after { left: 18px; right: 18px; bottom: 18px; height: 2px; background: #fff; opacity: 0.8; border-radius: 2px; }
.card__icon--play::before { left: 21px; top: 17px; border-style: solid; border-width: 11px 0 11px 17px; border-color: transparent transparent transparent var(--accent); }

.tag {
  position: absolute; top: 36px; right: 32px;
  font-size: 12px; letter-spacing: 0.12em; padding: 3px 10px; border-radius: 999px;
  color: var(--text-2); border: 1px solid var(--line-2);
}
.tag--free { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); transition: background 0.6s; }

/* ---------- 产品详情 ---------- */
.feature { padding: 120px 0; border-top: 1px solid var(--line); }
.feature--alt { background: linear-gradient(180deg, var(--bg-2), var(--bg)); }
.feature__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 56px; }
.feature__head h2 { font-size: clamp(34px, 5vw, 60px); letter-spacing: 0.06em; line-height: 1.15; }
.feature__lede { color: var(--text-2); font-size: 17px; max-width: 560px; margin-top: 18px; }

.points { list-style: none; padding: 0; margin: 56px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.points li { padding: 0 28px; border-left: 1px solid var(--line); }
.points li:first-child { padding-left: 0; border-left: 0; }
.points h4 { font-size: 16px; margin-bottom: 8px; }
.points p { color: var(--text-2); font-size: 14px; }

/* ---------- 32:9 无界巨幕 ---------- */
.screen {
  position: relative;
  padding: 10px; border-radius: 26px;
  background: var(--frame);
  border: 1px solid var(--line-2);
  box-shadow: var(--frame-shadow);
}
.screen::after { /* 屏幕下方的环境光 */
  content: ""; position: absolute; left: 10%; right: 10%; bottom: -40px; height: 40px;
  background: radial-gradient(ellipse at top, var(--accent-soft), transparent 70%);
  pointer-events: none; transition: background 0.6s;
}
/* 默认：主驾区域 2112×840；全景：7680×936 贯穿仪表、主驾、副驾 */
.screen__glass {
  position: relative; aspect-ratio: 2112 / 840; overflow: hidden;
  border-radius: 18px; background: var(--ui-bg);
  container-type: inline-size;
  font-size: 1.2cqw;
}
.screen--pano .screen__glass { aspect-ratio: 7680 / 936; font-size: 0.6cqw; border-radius: 14px; }
.screen__glass::after { /* 玻璃反光 */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(115deg, var(--glare), transparent 35%);
}

.ui-clock { font-size: 3.4em; font-weight: 300; line-height: 1; letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.ui-clock--xl { font-size: 6em; font-weight: 200; }
.ui-sub { color: var(--text-2); font-size: 1em; letter-spacing: 0.2em; margin-top: 0.6em; }

/* 小助手界面 */
.ui-helper { position: absolute; inset: 0; display: grid; grid-template-columns: 26% 1fr; }
.ui-helper__side { padding: 2.6em 2.4em; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.ui-menu { list-style: none; margin: 1.6em 0 0; padding: 0; display: grid; gap: 0.2em; line-height: 1.3; }
.ui-menu button { display: block; width: 100%; text-align: left; border: 0; background: none; font-size: 1em; padding: 0.5em 0.9em; border-radius: 0.7em; color: var(--text-2); letter-spacing: 0.1em; }
.ui-menu button.is-on { background: var(--accent-soft); color: var(--text); box-shadow: inset 0.2em 0 0 var(--accent); }
.ui-helper__grid { padding: 2.2em; display: grid; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(2, 1fr); gap: 1.2em; }
.tile {
  border-radius: 1em; background: var(--ui-tile); border: 1px solid var(--ui-line); box-shadow: var(--ui-shadow);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 1.2em 1.4em;
  font-size: 1.1em; color: var(--text); letter-spacing: 0.1em;
  transition: background 0.3s, border-color 0.3s, transform 0.4s var(--ease);
}
.tile:hover { background: var(--accent-soft); border-color: var(--accent); transform: translateY(-2px); }
.tile--more { justify-content: center; align-items: center; color: var(--text-3); border-style: dashed; }
.ico { width: 2.2em; height: 2.2em; border-radius: 0.7em; margin-bottom: auto; background: var(--bg-3); position: relative; }
.ico::after { content: ""; position: absolute; inset: 0.6em; border-radius: 50%; border: 0.18em solid var(--accent); transition: border-color 0.6s; }
.ico--b::after { border-radius: 0.2em; }
.ico--c::after { border-radius: 0.2em 50% 50% 50%; }
.ico--d::after { inset: 0.55em 0.9em; border-radius: 0.2em; }
.ico--e::after { border-color: var(--text-2); }
.ico--f::after { border-radius: 0; transform: rotate(45deg); inset: 0.7em; }
.ico--g::after { inset: 0.9em 0.5em; border-radius: 1em; }

/* 轻桌面界面 */
.ui-desktop { position: absolute; inset: 0; }
.ui-desktop__sky {
  position: absolute; inset: 0;
  background: var(--sky, linear-gradient(180deg, #1b2236 0%, #6c5a6e 48%, #e2a07e 64%, #2b2a35 64.4%, #0f1118 100%));
  transition: background 1.2s;
}
.ui-desktop__sky::before { /* 太阳 / 月亮 */
  content: ""; position: absolute; left: 93%; top: var(--sun-y, 50%);
  width: 5em; height: 5em; border-radius: 50%;
  background: var(--sun, radial-gradient(circle, #ffe2c2, #f2a86f 60%, transparent 70%));
  filter: blur(0.3px); transition: top 1.2s var(--ease), background 1.2s;
  animation: float 8s ease-in-out infinite;
}
@keyframes float { 50% { transform: translateY(-0.4em); } }
.ui-desktop__lake {
  position: absolute; left: 0; right: 0; top: 64%; bottom: 0;
  background: repeating-linear-gradient(180deg, rgba(255,255,255,0.05) 0 1px, transparent 1px 0.9em);
  animation: ripple 6s linear infinite;
  mask-image: linear-gradient(180deg, #000, transparent);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent);
}
@keyframes ripple { to { background-position: 0 0.9em; } }
/* 三潭印月的三座石塔剪影 */
.ui-desktop__towers { position: absolute; left: 76%; top: 64%; transform: translate(-50%, -100%); display: flex; gap: 6em; }
.ui-desktop__towers i {
  display: block; width: 1.1em; height: 3.2em; background: rgba(10,11,16,0.85);
  clip-path: polygon(40% 0, 60% 0, 60% 12%, 100% 22%, 80% 30%, 80% 55%, 100% 55%, 100% 64%, 70% 64%, 70% 100%, 30% 100%, 30% 64%, 0 64%, 0 55%, 20% 55%, 20% 30%, 0 22%, 40% 12%);
}
.ui-desktop__towers i:nth-child(2) { transform: scale(0.8); transform-origin: bottom; }
.ui-desktop__towers i:nth-child(3) { transform: scale(0.65); transform-origin: bottom; }
/* 三个显示区域：仪表 2904 / 主驾 2388 / 副驾 2388 */
.zone { position: absolute; top: 0; bottom: 0; }
.zone--cluster { left: 0; width: 37.8125%; }
.zone--driver { left: 37.8125%; width: 31.09375%; border-left: 1px dashed rgba(255,255,255,0.16); }
.zone--passenger { right: 0; width: 31.09375%; border-left: 1px dashed rgba(255,255,255,0.16); }
.zone__tag {
  position: absolute; left: 1.6em; bottom: 1.4em; font-size: 1.5em; letter-spacing: 0.2em;
  color: rgba(255,255,255,0.55);
}
.zone--cluster .zone__tag { left: 50%; transform: translateX(-50%); bottom: auto; top: 42%; font-size: 1.8em; color: rgba(255,255,255,0.4); }
.ui-desktop__widget { position: absolute; left: 4em; top: 2.6em; text-shadow: 0 2px 20px rgba(0,0,0,0.35); }
.ui-desktop__widget .ui-sub { color: rgba(255,255,255,0.75); font-size: 1.6em; }
.ui-desktop__cards { position: absolute; right: 2em; top: 3em; bottom: 3em; display: grid; grid-template-columns: repeat(2, 6.5em); gap: 1.4em; }
.ui-desktop__cards i:nth-child(3) { display: none; }
.ui-desktop__cards i {
  border-radius: 1.6em; background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.ui-desktop__cards i:first-child { background: linear-gradient(160deg, var(--accent-soft), rgba(255,255,255,0.1)); }
.ui-desktop__dock {
  position: absolute; right: 3em; top: 50%; transform: translateY(-50%); display: flex; gap: 1.2em;
  padding: 0.9em 1.2em; border-radius: 1.4em;
  background: rgba(255,255,255,0.08); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
}
.ui-desktop__dock i { width: 6em; height: 6em; border-radius: 1.6em; background: rgba(255,255,255,0.14); }
.ui-desktop .ui-clock--xl { font-size: 7.5em; }
.ui-desktop .ui-desktop__widget { left: 3em; }
.ui-desktop__dock i:first-child { background: var(--accent); transition: background 0.6s; }

.ui-desktop[data-scene="day"]   { --sky: linear-gradient(180deg, #8fb2d6 0%, #c9dbe9 50%, #e9eef0 64%, #5f6d74 64.4%, #2a3238 100%); --sun: radial-gradient(circle, #fffef6, #fff4d6 50%, transparent 70%); --sun-y: 14%; }
.ui-desktop[data-scene="dusk"]  { --sky: linear-gradient(180deg, #2d2440 0%, #8e5a6e 40%, #f0a37a 62%, #3a2a30 64.4%, #120d12 100%); --sun: radial-gradient(circle, #ffd0a8, #e8794a 55%, transparent 70%); --sun-y: 42%; }
.ui-desktop[data-scene="night"] { --sky: radial-gradient(1px 1px at 20% 20%, #fff, transparent), radial-gradient(1px 1px at 70% 12%, #fff, transparent), radial-gradient(1px 1px at 40% 34%, #fffa, transparent), radial-gradient(1px 1px at 86% 40%, #fff9, transparent), linear-gradient(180deg, #05070f 0%, #101a33 55%, #1d2a48 64%, #070a12 64.4%, #020306 100%); --sun: radial-gradient(circle, #f4f2ea, #c9cfd8 55%, transparent 70%); --sun-y: 10%; }

.scenes { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.scene {
  padding: 8px 20px; border-radius: 999px; font-size: 14px; letter-spacing: 0.16em;
  background: transparent; border: 1px solid var(--line-2); color: var(--text-2);
  transition: all 0.3s;
}
.scene:hover { color: var(--text); }
.scene.is-active { background: var(--text); color: var(--bg); border-color: var(--text); }

/* E8 Play 界面 */
.ui-play { position: absolute; inset: 0; display: grid; grid-template-columns: 6em 1fr 30%; background: var(--ui-bg); }
.ui-play__bar { border-right: 1px solid var(--line); display: flex; flex-direction: column; align-items: center; gap: 1.2em; padding: 1.6em 0; }
.ui-play__bar .ui-clock { font-size: 1.3em; font-weight: 500; margin-bottom: 0.8em; }
.ui-play__bar i { width: 2.8em; height: 2.8em; border-radius: 0.8em; background: var(--ui-chip); }
.ui-play__bar i:nth-of-type(1) { background: #3bbf6a; }
.ui-play__bar i:nth-of-type(2) { background: #f25d6b; }
.ui-play__bar i:nth-of-type(3) { background: #4b8df7; }
.ui-play__map { position: relative; background: var(--map-bg); overflow: hidden; }
.ui-play__map svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.ui-play__map .road { fill: none; stroke: var(--road); stroke-width: 18; }
.ui-play__map .road--thin { stroke-width: 6; stroke: var(--road-thin); }
.ui-play__map .route { fill: none; stroke: var(--accent); stroke-width: 5; stroke-linecap: round; stroke-dasharray: 800; stroke-dashoffset: 800; transition: stroke-dashoffset 2.2s var(--ease), stroke 0.6s; }
.is-in .ui-play__map .route { stroke-dashoffset: 0; }
.ui-play__map .pin { fill: var(--accent-hi); transition: fill 0.6s; }
.ui-play__eta {
  position: absolute; left: 1.8em; top: 1.6em; padding: 0.8em 1.2em; border-radius: 1em;
  background: var(--ui-float); border: 1px solid var(--ui-line); box-shadow: var(--ui-shadow); font-size: 1.1em; color: var(--text-2);
}
.ui-play__eta strong { font-size: 1.8em; color: var(--text); font-weight: 600; margin-right: 0.15em; }
.ui-play__side { display: grid; grid-template-rows: auto 1fr; gap: 1.2em; padding: 1.6em; }
.ui-play__music { display: flex; align-items: center; gap: 1.2em; padding: 1.2em; border-radius: 1.2em; background: var(--ui-tile); box-shadow: var(--ui-shadow); }
.ui-play__music .cover { width: 4.4em; height: 4.4em; border-radius: 0.8em; flex: none; background: linear-gradient(135deg, var(--accent-hi), var(--accent) 50%, var(--icon-deep)); transition: background 0.6s; }
.ui-play__music b { display: block; font-size: 0.9em; color: var(--text-3); font-weight: 400; letter-spacing: 0.1em; }
.ui-play__music span { font-size: 1.25em; }
.ui-play__apps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1em; }
.ui-play__apps i { border-radius: 1em; background: var(--ui-tile); box-shadow: var(--ui-shadow); }

/* E8 Play：仪表 / HUD / 原车卡片 */
.trio { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 20px; margin-top: 48px; }
.mini { margin: 0; }
.mini__glass {
  position: relative; height: 132px; border-radius: 14px; overflow: hidden;
  background: var(--map-bg); border: 1px solid var(--line-2);
  display: flex; align-items: center; gap: 16px; padding: 0 22px;
}
.mini__glass svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.mini__glass .road { fill: none; stroke: var(--road); stroke-width: 10; }
.mini__glass .route { fill: none; stroke: var(--accent); stroke-width: 3.5; stroke-linecap: round; transition: stroke 0.6s; }
.mini--hud .mini__glass { background: #000; }
.hud__arrow {
  flex: none; width: 46px; height: 46px; position: relative;
  border-top: 5px solid #fff; border-right: 5px solid #fff; border-top-right-radius: 14px;
}
.hud__arrow::after {
  content: ""; position: absolute; right: -14px; bottom: -16px;
  border-style: solid; border-width: 12px 12px 0 12px; border-color: #fff transparent transparent;
}
.hud__text { font-size: 13px; color: var(--hud-sub); line-height: 1.5; position: relative; }
.hud__text strong { display: block; font-size: 20px; color: var(--hud-text); font-weight: 600; }
.mini--card .hud__text strong { font-size: 16px; }
.card-cover { flex: none; width: 64px; height: 64px; border-radius: 12px; background: linear-gradient(135deg, var(--accent-hi), var(--accent) 50%, var(--icon-deep)); transition: background 0.6s; }
.mini figcaption { margin-top: 14px; font-size: 13px; color: var(--text-3); }
.mini figcaption b { display: block; color: var(--text); font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.credit { margin-top: 40px; font-size: 13px; color: var(--text-3); }
.credit a, .footer__legal a { color: var(--text-2); border-bottom: 1px solid var(--line-2); }
.credit a:hover, .footer__legal a:hover { color: var(--accent); }

/* E8小助手：声浪试听 */
.engine {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin-top: 40px; padding: 14px 18px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg-2);
}
.engine__label { font-size: 13px; letter-spacing: 0.2em; color: var(--text-3); padding-left: 6px; }
.engine__list { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.engine__btn {
  padding: 6px 14px; border-radius: 999px; font-size: 14px;
  background: transparent; border: 1px solid transparent; color: var(--text-2);
  transition: color 0.3s, border-color 0.3s, background 0.3s;
}
.engine__btn:hover { color: var(--text); border-color: var(--line-2); }
.engine__btn.is-playing { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }
.engine__bars { display: flex; align-items: flex-end; gap: 3px; height: 18px; padding-right: 8px; }
.engine__bars i { width: 3px; height: 4px; border-radius: 2px; background: var(--text-3); transition: background 0.3s; }
.engine.is-playing .engine__bars i { background: var(--accent); animation: bar 0.9s ease-in-out infinite; }
.engine.is-playing .engine__bars i:nth-child(2) { animation-delay: -0.3s; }
.engine.is-playing .engine__bars i:nth-child(3) { animation-delay: -0.6s; }
.engine.is-playing .engine__bars i:nth-child(4) { animation-delay: -0.15s; }
.engine.is-playing .engine__bars i:nth-child(5) { animation-delay: -0.45s; }
@keyframes bar { 50% { height: 18px; } }

/* ---------- 下载 ---------- */
.download { padding: 140px 0; border-top: 1px solid var(--line); position: relative; overflow: hidden; }
.download::before {
  content: ""; position: absolute; left: 50%; top: 0; width: 900px; height: 400px; transform: translate(-50%, -50%);
  background: radial-gradient(ellipse, var(--accent-soft), transparent 70%); pointer-events: none;
}
.dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.dl__item {
  padding: 32px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-2);
  display: flex; flex-direction: column; gap: 6px;
}
.dl__item.is-flash { animation: flash 1.4s var(--ease); }
@keyframes flash { 0%, 40% { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); } }
.dl__item h3 { font-size: 20px; }
.dl__meta { color: var(--text-3); font-size: 13px; letter-spacing: 0.04em; }
.dl__desc { color: var(--text-2); font-size: 14px; margin: 10px 0 24px; flex: 1; }
.dl__item .btn { width: 100%; }
.dl__item .btn[aria-disabled="true"] { opacity: 0.45; pointer-events: none; }
.dl__guide { margin-top: 12px; font-size: 13px; color: var(--text-3); text-align: center; }
.dl__guide:hover { color: var(--accent); }

/* ---------- FAQ ---------- */
.faq { padding: 120px 0 140px; border-top: 1px solid var(--line); }
.faq .section-head { margin-bottom: 40px; }
.faq__list details { border-bottom: 1px solid var(--line); }
.faq__list summary {
  list-style: none; cursor: pointer; padding: 24px 40px 24px 0; position: relative; font-size: 17px;
}
.faq__list summary::-webkit-details-marker { display: none; }
.faq__list summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 10px; height: 10px;
  border-right: 1.5px solid var(--text-2); border-bottom: 1.5px solid var(--text-2);
  transform: translateY(-70%) rotate(45deg); transition: transform 0.3s var(--ease);
}
.faq__list details[open] summary::after { transform: translateY(-30%) rotate(225deg); border-color: var(--accent); }
.faq__list details p { color: var(--text-2); padding: 0 40px 24px 0; }

/* ---------- 页脚 ---------- */
.footer { position: relative; padding: 72px 0 40px; background: var(--bg-2); }
.sunrise--static { position: absolute; top: 0; bottom: auto; }
.sunrise--static i { width: 100%; opacity: 0.6; }
.footer__inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--line); }
.footer__note { color: var(--text-3); font-size: 14px; margin-top: 12px; }
.footer__links { display: flex; gap: 28px; font-size: 14px; color: var(--text-2); flex-wrap: wrap; }
.footer__links a:hover { color: var(--accent); }
.footer__legal { padding-top: 24px; font-size: 12px; color: var(--text-3); display: grid; gap: 6px; }

/* ---------- 入场动效 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.cards .reveal:nth-child(2), .ethos__grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.cards .reveal:nth-child(3), .ethos__grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.hero .reveal:nth-child(2) { transition-delay: 0.1s; }
.hero .reveal:nth-child(3) { transition-delay: 0.2s; }
.hero .reveal:nth-child(4) { transition-delay: 0.3s; }
.paint.reveal { transform: translate(-50%, 24px); transition-delay: 0.6s; }
.paint.reveal.is-in { transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero .sunrise i { width: 92%; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .cards, .dl { grid-template-columns: 1fr; }
  .trio { grid-template-columns: 1fr 1fr; }
  .trio .mini--cluster { grid-column: 1 / -1; }
  .points { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
  .points li:nth-child(3) { padding-left: 0; border-left: 0; }
  .feature__head { flex-direction: column; align-items: flex-start; }
  .nav__links { gap: 22px; }
}

@media (max-width: 760px) {
  .m-only { display: inline; }
  .nav__inner { height: 60px; gap: 16px; }
  .nav__cta { margin-left: auto; }
  .nav__toggle {
    display: grid; place-content: center; gap: 6px; width: 40px; height: 40px;
    background: none; border: 0; padding: 0;
  }
  .nav__toggle span { display: block; width: 20px; height: 1.5px; background: var(--text); transition: transform 0.3s var(--ease); }
  .nav.is-open .nav__toggle span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .nav.is-open .nav__toggle span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .nav__links {
    position: absolute; top: 60px; left: 0; right: 0; margin: 0;
    flex-direction: column; gap: 0; padding: 8px 16px 20px;
    background: var(--nav-solid); border-bottom: 1px solid var(--line);
    font-size: 16px;
    clip-path: inset(0 0 100% 0); transition: clip-path 0.4s var(--ease);
  }
  .nav__links a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav__links a::after { display: none; }
  .nav.is-open { background: var(--nav-solid); }
  .nav.is-open .nav__links { clip-path: inset(0 0 0 0); }

  .hero { padding: 100px 0 170px; }
  .hero__title span { letter-spacing: 0.2em; margin-right: -0.2em; }
  .sunrise { bottom: 130px; }
  .paint { bottom: 48px; }
  .paint__label { display: none; }
  .paint { padding: 8px 12px; }

  .ethos__grid { grid-template-columns: 1fr; }
  .ethos__item { padding: 32px 0; border-left: 0; border-top: 1px solid var(--line); }
  .ethos__item:first-child { border-top: 0; }

  .products, .download { padding: 96px 0; }
  .feature, .faq { padding: 88px 0; }
  .section-head { margin-bottom: 44px; }
  .feature__head { margin-bottom: 36px; gap: 24px; }
  .feature__lede { font-size: 16px; }
  .card { padding: 28px 24px; }
  .tag { top: 28px; right: 24px; }
  .points { grid-template-columns: 1fr; margin-top: 40px; row-gap: 22px; }
  .points li { padding: 0 0 0 16px; border-left: 2px solid var(--accent-soft); }
  .points li:first-child, .points li:nth-child(3) { padding-left: 16px; border-left: 2px solid var(--accent-soft); }

  /* 手机上巨幕保持 32:9 比例，在框内横向滑动查看 */
  .screen { padding: 6px; border-radius: 18px; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .screen::-webkit-scrollbar { display: none; }
  .screen::after { display: none; }
  .screen__glass { width: 760px; border-radius: 13px; }
  .screen--pano .screen__glass { width: 1500px; }
  .trio { grid-template-columns: 1fr; gap: 28px; }
  .engine { border-radius: var(--radius); }
  .engine__label { width: 100%; padding-left: 4px; }
  .engine__bars { display: none; }
  .screen + .points, .screen + .scenes { position: relative; }
  .screen-hint { display: block !important; }

  .footer__inner { flex-direction: column; }
}

.screen-hint { display: none; text-align: center; font-size: 12px; color: var(--text-3); letter-spacing: 0.2em; margin-top: 12px; }

/* 全景区域标签避让时钟日期 */
.zone--driver .zone__tag { left: auto; right: 2em; bottom: 0.7em; font-size: 1.3em; }
.zone--passenger .zone__tag { bottom: 0.7em; font-size: 1.3em; }
.ui-desktop .ui-desktop__widget { top: 2em; }

/* ---------- 日夜主题 ---------- */
body { transition: background-color 0.5s, color 0.5s; }
.ui-desktop { color: #fff; }                         /* 全景壁纸上的文字始终为白色 */
.mini--hud { --hud-text: #fff; --hud-sub: #a4a9b4; }  /* HUD 与实车一致，始终黑底白字 */

.theme-btn {
  position: relative; width: 36px; height: 36px; flex: none;
  display: grid; place-items: center; border-radius: 50%;
  background: transparent; border: 1px solid var(--line-2); color: var(--text-2);
  transition: color 0.3s, border-color 0.3s;
}
.theme-btn:hover { color: var(--text); border-color: var(--accent); }
.theme-btn svg { width: 18px; height: 18px; display: none; }
.theme-btn[data-mode="auto"] .i-auto,
.theme-btn[data-mode="light"] .i-light,
.theme-btn[data-mode="dark"] .i-dark { display: block; }
.theme-btn__tip {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translate(-50%, -4px);
  font-size: 12px; white-space: nowrap; letter-spacing: 0.1em; padding: 4px 10px; border-radius: 6px;
  background: var(--bg-3); color: var(--text); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;
}
.theme-btn:hover .theme-btn__tip, .theme-btn:focus-visible .theme-btn__tip, .theme-btn.is-tip .theme-btn__tip { opacity: 1; transform: translate(-50%, 0); }
@media (max-width: 760px) {
  .theme-btn { margin-left: auto; }
  .nav__cta { margin-left: 0; }
}

/* ---------- E8小助手：可切换的菜单 + 功能全览 ---------- */
.ui-menu button { transition: background 0.3s, color 0.3s, box-shadow 0.3s; }
.ui-menu button:hover { color: var(--text); }
.ui-helper__grid .tile { animation: tile-in 0.45s var(--ease) both; }
.ui-helper__grid .tile:nth-child(2) { animation-delay: 0.03s; }
.ui-helper__grid .tile:nth-child(3) { animation-delay: 0.06s; }
.ui-helper__grid .tile:nth-child(4) { animation-delay: 0.09s; }
.ui-helper__grid .tile:nth-child(5) { animation-delay: 0.12s; }
.ui-helper__grid .tile:nth-child(6) { animation-delay: 0.15s; }
.ui-helper__grid .tile:nth-child(7) { animation-delay: 0.18s; }
.ui-helper__grid .tile:nth-child(8) { animation-delay: 0.21s; }
@keyframes tile-in { from { opacity: 0; transform: translateY(0.6em); } }
.tile small { display: block; font-size: 0.78em; color: var(--text-3); letter-spacing: 0.02em; margin-top: 0.3em; line-height: 1.35; }

.suite { margin-top: 96px; }
.suite__head { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: 28px; }
.suite__head h3 { font-size: clamp(24px, 3vw, 32px); letter-spacing: 0.06em; }
.suite__head p { color: var(--text-2); font-size: 15px; }
.suite__head strong { color: var(--accent); font-size: 1.4em; font-weight: 600; margin-right: 2px; transition: color 0.6s; }
.suite__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.suite__item {
  position: relative; padding: 28px 28px 24px; border-radius: var(--radius);
  background: var(--bg-2); border: 1px solid var(--line); cursor: pointer;
  transition: border-color 0.3s, transform 0.4s var(--ease), box-shadow 0.3s;
}
.suite__item:hover { border-color: var(--line-2); transform: translateY(-2px); }
.suite__item.is-on { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.suite__no { font-size: 12px; letter-spacing: 0.2em; color: var(--accent); transition: color 0.6s; }
.suite__item h4 { font-size: 19px; margin: 6px 0 16px; }
.suite__item ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.suite__item li { display: grid; grid-template-columns: 7.5em 1fr; gap: 12px; font-size: 14px; line-height: 1.5; }
.suite__item li b { font-weight: 500; color: var(--text); }
.suite__item li span { color: var(--text-2); }
@media (max-width: 960px) { .suite__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 760px) {
  .suite { margin-top: 64px; }
  .suite__grid { grid-template-columns: 1fr; }
  .suite__item { padding: 24px 20px 20px; }
  .suite__item li { grid-template-columns: 1fr; gap: 2px; }
}

/* ---------- E8轻桌面：悬浮歌词演示 ---------- */
/* 歌词落在主驾时钟右侧到副驾，开启时收起卡片与 Dock，只留风景 */
.lyric { position: absolute; left: 57%; right: 3%; top: 0; bottom: 0; pointer-events: none; transition: opacity 0.5s; }
.lyric[data-style="off"] { opacity: 0; }
.ui-desktop:has(.lyric:not([data-style="off"])) .ui-desktop__cards,
.ui-desktop:has(.lyric:not([data-style="off"])) .ui-desktop__dock { opacity: 0; transition: opacity 0.5s; }
.ui-desktop__cards, .ui-desktop__dock { transition: opacity 0.5s; }
.lyric__caption {
  position: absolute; left: 0; right: 0; top: 12%; text-align: center;
  font-size: 1.7em; letter-spacing: 0.2em; color: rgba(255,255,255,0.75);
  opacity: 0; transform: translateY(0.4em); transition: opacity 0.6s, transform 0.6s var(--ease);
}
.lyric__caption.is-on { opacity: 1; transform: none; }
.lyric__stage { position: absolute; inset: 0; }
/* 渐隐的椭圆暗场，保证亮色视频上的可读性 */
.lyric__stage::before {
  content: ""; position: absolute; left: 8%; right: 8%; top: 22%; bottom: 14%;
  background: radial-gradient(ellipse at center, rgba(0,0,0,0.28), transparent 70%);
}
.ly {
  position: absolute; left: 50%; top: 56%; white-space: nowrap;
  font-size: 4.6em; font-weight: 600; letter-spacing: 0.06em; line-height: 1.2;
  color: rgba(255,255,255,0.92); text-shadow: 0 0.06em 0.4em rgba(0,0,0,0.35);
  transform: translate(-50%, -50%);
  transition: transform 0.9s var(--ease), opacity 0.9s var(--ease), color 0.6s;
}
.ly__sung {
  position: absolute; inset: 0; color: transparent; text-shadow: none;
  background: linear-gradient(90deg, #fff, var(--accent-hi) 45%, var(--accent));
  -webkit-background-clip: text; background-clip: text;
  clip-path: inset(0 100% 0 0);
}
.ly.is-singing .ly__sung { animation: sing var(--d, 2600ms) linear forwards; }
.ly.is-done .ly__sung { clip-path: inset(0 0 0 0); }
@keyframes sing { to { clip-path: inset(0 0 0 0); } }

/* 常规：一句一行，唱完向上滚动 */
.lyric[data-style="classic"] .ly.is-next { transform: translate(-50%, 30%) scale(0.72); opacity: 0; }
.lyric[data-style="classic"] .ly.is-gone { transform: translate(-50%, -150%) scale(0.72); opacity: 0; }

/* 双排：上行靠左、下行靠右，另一行提前显示下一句 */
.lyric[data-style="dual"] .ly { font-size: 3.8em; }
.lyric[data-style="dual"] .ly.row-a { left: 12%; top: 40%; transform: translate(0, -50%); }
.lyric[data-style="dual"] .ly.row-b { left: auto; right: 12%; top: 70%; transform: translate(0, -50%); }
.lyric[data-style="dual"] .ly.is-wait { color: rgba(255,255,255,0.5); }
.lyric[data-style="dual"] .ly.is-gone { opacity: 0; }

/* 漂浮：歌词散落各处，唱过的句子渐渐远去 */
.lyric[data-style="float"] .ly { font-size: 3.6em; transform: translate(-50%, -50%) rotate(var(--r, 0deg)); }
.lyric[data-style="float"] .ly.is-old { opacity: 0.28; transform: translate(-50%, -50%) rotate(var(--r, 0deg)) scale(0.78); filter: blur(0.5px); }
.lyric[data-style="float"] .ly.is-gone { opacity: 0; transform: translate(-50%, -50%) rotate(var(--r, 0deg)) scale(0.6); }
.lyric[data-style="float"] .ly.in-rise { animation: in-rise 0.8s var(--ease) both; }
.lyric[data-style="float"] .ly.in-zoom { animation: in-zoom 0.8s var(--ease) both; }
.lyric[data-style="float"] .ly.in-drop { animation: in-drop 0.8s var(--ease) both; }
.lyric[data-style="float"] .ly.in-slide { animation: in-slide 0.8s var(--ease) both; }
@keyframes in-rise  { from { opacity: 0; translate: 0 0.8em; } }
@keyframes in-zoom  { from { opacity: 0; scale: 1.6; filter: blur(4px); } }
@keyframes in-drop  { from { opacity: 0; translate: 0 -1.2em; } }
@keyframes in-slide { from { opacity: 0; translate: -1.6em 0; } }

/* ---------- E8轻桌面：控制条与详情 ---------- */
.controls { display: flex; justify-content: center; gap: 12px 36px; flex-wrap: wrap; margin-top: 40px; }
.controls .scenes { margin-top: 0; align-items: center; flex-wrap: wrap; }
.controls__label { font-size: 12px; letter-spacing: 0.2em; color: var(--text-3); margin-right: 6px; }

.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 88px; }
.duo__item { padding: 40px 40px 36px; border-radius: var(--radius); background: var(--bg-2); border: 1px solid var(--line); }
.duo__item h3 { font-size: clamp(24px, 3vw, 32px); letter-spacing: 0.06em; }
.duo__lede { color: var(--text-2); margin: 10px 0 28px; }
.specs { margin: 0; display: grid; gap: 0; }
.specs > div { display: grid; grid-template-columns: 6.5em 1fr; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); }
.specs dt { font-weight: 600; font-size: 15px; }
.specs dd { margin: 0; color: var(--text-2); font-size: 14px; line-height: 1.7; }
.modes { margin-top: 24px; display: grid; gap: 8px; }
.modes__label { font-size: 12px; letter-spacing: 0.2em; color: var(--text-3); margin-bottom: 4px; }
.mode { display: flex; gap: 12px; align-items: baseline; padding: 10px 14px; border-radius: var(--radius-sm); background: var(--accent-soft); font-size: 13px; color: var(--text-2); transition: background 0.6s; }
.mode b { color: var(--text); font-weight: 600; font-size: 14px; flex: none; }
@media (max-width: 960px) { .duo { grid-template-columns: 1fr; } }
@media (max-width: 760px) {
  .duo { margin-top: 64px; }
  .duo__item { padding: 28px 20px 24px; }
  .specs > div { grid-template-columns: 1fr; gap: 4px; }
  .mode { flex-direction: column; gap: 2px; }
  .controls { gap: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .ly.is-singing .ly__sung { animation: none; clip-path: inset(0 0 0 0); }
}

.specs dd b { color: var(--text); font-weight: 600; margin-right: 4px; }
@media (max-width: 760px) {
  .controls .scenes { justify-content: center; gap: 6px; }
  .controls__label { width: 100%; text-align: center; margin: 0 0 4px; }
  .controls .scene { padding: 6px 14px; font-size: 13px; letter-spacing: 0.1em; }
}

/* ---------- 最近更新 ---------- */
.updates { padding: 120px 0; border-top: 1px solid var(--line); }
.updates .section-head { margin-bottom: 36px; }
.upd-filter { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-bottom: 40px; }
.upd-list { list-style: none; margin: 0; padding: 0; position: relative; }
/* 时间轴：一道细光，呼应旭日东升光带 */
.upd-list::before {
  content: ""; position: absolute; left: 6.5em; top: 8px; bottom: 8px; width: 1px;
  background: linear-gradient(180deg, var(--accent), var(--line) 30%, var(--line));
  transition: background 0.6s;
}
.upd { display: grid; grid-template-columns: 6.5em 1fr; animation: upd-in 0.5s var(--ease) both; }
@keyframes upd-in { from { opacity: 0; transform: translateY(10px); } }
.upd__date { font-size: 13px; color: var(--text-3); padding: 22px 20px 0 0; text-align: right; font-variant-numeric: tabular-nums; }
.upd__body { position: relative; padding: 18px 0 28px 32px; }
.upd__body::before {
  content: ""; position: absolute; left: -4px; top: 26px; width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--dot, var(--accent));
}
.upd:first-child .upd__body::before { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.upd[data-product="helper"]  { --dot: var(--accent); }
.upd[data-product="desktop"] { --dot: #8b7fc9; }
.upd[data-product="play"]    { --dot: #4fa58a; }
.upd__meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.upd__tag { font-size: 12px; letter-spacing: 0.08em; padding: 2px 10px; border-radius: 999px; border: 1px solid var(--dot); color: var(--text); }
.upd__ver { font-size: 13px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.upd__new { font-size: 11px; letter-spacing: 0.12em; padding: 1px 8px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); transition: background 0.6s; }
.upd h3 { font-size: 18px; margin-bottom: 8px; }
.upd ul { margin: 0; padding-left: 1.1em; color: var(--text-2); font-size: 14px; line-height: 1.75; }
.upd ul li::marker { color: var(--text-3); }
.upd-more { display: flex; justify-content: center; margin-top: 16px; }
@media (max-width: 760px) {
  .updates { padding: 88px 0; }
  .upd-list::before { left: 4px; }
  .upd { grid-template-columns: 1fr; }
  .upd__date { text-align: left; padding: 18px 0 0 24px; }
  .upd__body { padding: 4px 0 22px 24px; }
  .upd__body::before { left: -2px; top: -14px; }
  .upd-filter .scene { padding: 6px 14px; font-size: 13px; letter-spacing: 0.08em; }
}
/* 待确认 / 推断：根据安装包整理的内容，确认后在数据里去掉标记 */
.upd__review { font-size: 11px; letter-spacing: 0.1em; padding: 1px 8px; border-radius: 999px; border: 1px dashed #d08a2e; color: #d08a2e; }
.upd__guess { display: inline-block; margin-left: 8px; font-size: 11px; padding: 0 6px; border-radius: 4px; background: rgba(208, 138, 46, 0.14); color: #c27a1e; vertical-align: 1px; }

/* ---------- 原车应用增强 ---------- */
.oem { padding: 120px 0; border-top: 1px solid var(--line); background: linear-gradient(180deg, var(--bg-2), var(--bg)); }
.oem__rules { list-style: none; margin: 0 0 40px; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.oem__rules li { padding: 22px 24px; border-left: 1px solid var(--line); display: grid; gap: 4px; }
.oem__rules li:first-child { border-left: 0; padding-left: 0; }
.oem__rules b { font-size: 15px; }
.oem__rules span { font-size: 13px; color: var(--text-2); line-height: 1.6; }

.oem__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.oem__item {
  padding: 32px; border-radius: var(--radius); background: var(--bg-2); border: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 12px;
}
.oem__item h3 { font-size: 22px; letter-spacing: 0.04em; }
.oem__item > p, .oem__text > p { color: var(--text-2); font-size: 15px; }
.oem__item--wide { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1.15fr; gap: 40px; align-items: center; }
.oem__text { display: flex; flex-direction: column; gap: 12px; }
.oem__meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.oem__app { font-size: 12px; letter-spacing: 0.12em; color: var(--accent); transition: color 0.6s; }
.oem__status { font-size: 11px; letter-spacing: 0.1em; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-2); }
.oem__list { margin: 4px 0 0; padding-left: 1.1em; color: var(--text-2); font-size: 14px; line-height: 1.8; }
.oem__list li::marker { color: var(--accent); }
.oem__todo { margin-top: auto; padding: 12px 14px; border-radius: var(--radius-sm); border: 1px dashed #d08a2e; color: #c27a1e !important; font-size: 13px !important; }
.oem__item--more { background: transparent; border-style: dashed; border-color: var(--line-2); }
.oem__item--more .card__more { margin-top: auto; }

/* 360 布局示意：原车 1824 + 新增 552（四格轮毂视角），比例按 2376×768 */
.avm {
  position: relative; display: grid; grid-template-columns: 1824fr 552fr; aspect-ratio: 2376 / 768;
  border-radius: 14px; overflow: hidden; background: var(--map-bg); border: 1px solid var(--line-2);
  container-type: inline-size;
}
.avm__stock { position: relative; display: grid; grid-template-columns: 620fr 1204fr; }
.avm__top { position: relative; background: var(--ui-chip); border-right: 1px solid var(--line); display: grid; place-items: center; }
.avm__car { width: 24%; aspect-ratio: 1 / 2.2; border-radius: 30% / 15%; background: var(--text-3); opacity: 0.55; box-shadow: 0 0 0 3cqw rgba(127, 140, 160, 0.12); }
.avm__view { background: linear-gradient(180deg, rgba(127,140,160,0.08), rgba(127,140,160,0.22)); display: grid; place-items: center; }
.avm__view span, .avm__wheels span { font-size: 2.2cqw; color: var(--text-3); letter-spacing: 0.1em; }
.avm__wheels {
  position: relative; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 2px;
  background: var(--accent); padding: 2px; transition: background 0.6s;
}
.avm__wheels div {
  display: grid; place-items: center; background:
    radial-gradient(circle at 50% 70%, rgba(20,20,24,0.55) 0 22%, transparent 23%),
    linear-gradient(180deg, rgba(127,140,160,0.18), rgba(127,140,160,0.32)), var(--map-bg);
}
.avm__wheels span { color: var(--text); font-size: 2cqw; }
.avm__label { position: absolute; left: 1.4cqw; bottom: 1.2cqw; font-size: 1.8cqw; padding: 0.3cqw 1cqw; border-radius: 999px; background: var(--ui-float); color: var(--text-2); white-space: nowrap; }
.avm__label--new { left: 50%; transform: translateX(-50%); background: var(--accent); color: var(--accent-ink); transition: background 0.6s; }

@media (max-width: 960px) {
  .oem__rules { grid-template-columns: 1fr 1fr; }
  .oem__rules li:nth-child(3) { border-left: 0; padding-left: 0; }
  .oem__rules li:nth-child(n+3) { border-top: 1px solid var(--line); }
  .oem__grid { grid-template-columns: 1fr 1fr; }
  .oem__item--wide { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 760px) {
  .oem { padding: 88px 0; }
  .oem__rules { grid-template-columns: 1fr; }
  .oem__rules li, .oem__rules li:nth-child(3) { padding: 16px 0; border-left: 0; }
  .oem__rules li + li { border-top: 1px solid var(--line); }
  .oem__grid { grid-template-columns: 1fr; }
  .oem__item { padding: 24px 20px; }
}
.avm__wheels div { place-items: start; padding: 1cqw 1.2cqw; background:
    radial-gradient(circle at 50% 56%, rgba(20,20,24,0.55) 0 20%, transparent 21%),
    linear-gradient(180deg, rgba(127,140,160,0.18), rgba(127,140,160,0.32)), var(--map-bg); }