/* 瞬译官网样式
   默认白色；<html data-theme="dark"> 时是深色（右上角按钮切换，记在 localStorage）。
   品牌色：薄荷 #2EE6C5、蓝 #3A9BFF、墨 #0B0E13。
   页面上不放手画的插图；产品展示用的是和软件里一模一样的字幕框样式。 */

/* 数字和英文：Space Grotesk（SIL OFL，许可证在 assets/fonts/SpaceGrotesk-OFL.txt），放在自己网站上 */
@font-face {
  font-family: "Space Grotesk";
  src: url("../fonts/SpaceGrotesk.ttf") format("truetype");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2190-2199, U+2212, U+2215;
}

/* ---------- 颜色 ---------- */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-2: #f5f8fa;
  --bg-3: #edf2f5;
  --card: #ffffff;
  --card-2: #f7fafb;
  --line: #e5ebef;
  --line-2: #d6dee5;
  --ink: #0b0e13;
  --text: #1d2630;
  --text-2: #4a5663;
  --text-3: #7a8693;

  --brand: #2ee6c5;
  --brand-2: #1fd1b2;
  --brand-ink: #0a9a82;
  --brand-soft: #e4fbf6;
  --brand-line: #b4f1e4;
  --on-brand: #052520;
  --blue: #3a9bff;
  --blue-ink: #1f74d6;
  --blue-soft: #e8f2ff;
  --amber-ink: #c26d00;
  --amber-soft: #fff3df;
  --red-ink: #d6404a;

  --shadow-sm: 0 1px 2px rgba(15, 25, 35, .05), 0 2px 6px rgba(15, 25, 35, .04);
  --shadow-md: 0 2px 4px rgba(15, 25, 35, .04), 0 10px 28px rgba(15, 25, 35, .07);
  --shadow-lg: 0 6px 16px rgba(15, 25, 35, .06), 0 28px 64px rgba(15, 25, 35, .12);
  --glow-brand: 0 8px 24px rgba(31, 209, 178, .32);

  --hero-a: rgba(46, 230, 197, .26);
  --hero-b: rgba(58, 155, 255, .18);
  --grid: rgba(11, 14, 19, .045);
  --nav-bg: rgba(255, 255, 255, .78);
  --chip-bg: #ffffff;

  --r: 16px;
  --r-lg: 22px;
  --r-xl: 28px;

  /* 中文用系统自带字体（Windows 微软雅黑、Mac 苹方）：不从外网加载，大陆打开快 */
  --f-sans: -apple-system, "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, sans-serif;
  --f-num: "Space Grotesk", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
  --f-mono: "Cascadia Mono", Consolas, ui-monospace, "SF Mono", Menlo, monospace;
  --nav-h: 68px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b0e13;
  --bg-2: #0f141a;
  --bg-3: #141b23;
  --card: #121821;
  --card-2: #161e28;
  --line: #222b36;
  --line-2: #2f3a47;
  --ink: #f3f6f9;
  --text: #dbe2e9;
  --text-2: #a8b4c0;
  --text-3: #7d8a97;

  --brand-ink: #2ee6c5;
  --brand-soft: rgba(46, 230, 197, .1);
  --brand-line: rgba(46, 230, 197, .3);
  --blue-ink: #6cb4ff;
  --blue-soft: rgba(58, 155, 255, .12);
  --amber-ink: #ffb547;
  --amber-soft: rgba(255, 181, 71, .12);
  --red-ink: #ff7b85;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, .25), 0 12px 32px rgba(0, 0, 0, .3);
  --shadow-lg: 0 8px 20px rgba(0, 0, 0, .35), 0 30px 70px rgba(0, 0, 0, .45);
  --glow-brand: 0 8px 28px rgba(46, 230, 197, .22);

  --hero-a: rgba(46, 230, 197, .14);
  --hero-b: rgba(58, 155, 255, .12);
  --grid: rgba(255, 255, 255, .035);
  --nav-bg: rgba(11, 14, 19, .76);
  --chip-bg: #161e28;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.7 var(--f-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color .3s ease, color .3s ease;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0; text-wrap: pretty; }
h1, h2, h3, h4 { margin: 0; color: var(--ink); line-height: 1.25; text-wrap: balance; }
h1 { font-size: clamp(40px, 5.4vw, 72px); font-weight: 900; letter-spacing: -.02em; line-height: 1.1; }
h2 { font-size: clamp(28px, 3.3vw, 42px); font-weight: 800; letter-spacing: -.015em; }
h3 { font-size: 19px; font-weight: 700; }
.nb { display: inline-block; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; color: inherit; cursor: pointer; }
code {
  font: 500 .88em/1 var(--f-mono);
  padding: .25em .5em;
  border-radius: 6px;
  background: var(--bg-3);
  color: var(--text);
  white-space: nowrap;
}
kbd {
  display: inline-block;
  min-width: 1.9em;
  padding: .12em .5em;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--card);
  color: var(--ink);
  font: 600 .82em/1.5 var(--f-num);
  text-align: center;
}
::selection { background: rgba(46, 230, 197, .35); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

.wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
}
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; border-radius: 10px; background: var(--ink); color: var(--bg); }
.skip:focus { top: 12px; }

svg.i { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* 出现动画（只有 JS 在时才先藏起来） */
.js .rv { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); }
.js .rv.in { opacity: 1; transform: none; }
.js .rv[data-d="1"] { transition-delay: .08s; }
.js .rv[data-d="2"] { transition-delay: .16s; }
.js .rv[data-d="3"] { transition-delay: .24s; }

/* ---------- 按钮 ---------- */
.btn {
  --h: 44px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--h); padding: 0 20px;
  border: 1px solid transparent; border-radius: 12px;
  font-weight: 700; font-size: 15px; white-space: nowrap;
  transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: linear-gradient(180deg, #3cefd0, var(--brand-2)); color: var(--on-brand); box-shadow: var(--glow-brand), inset 0 1px 0 rgba(255, 255, 255, .45); }
.btn--primary:hover { box-shadow: 0 10px 30px rgba(31, 209, 178, .42), inset 0 1px 0 rgba(255, 255, 255, .45); transform: translateY(-1px); }
.btn--ghost { background: var(--card); color: var(--ink); border-color: var(--line-2); box-shadow: var(--shadow-sm); }
.btn--ghost:hover { border-color: var(--text-3); }
.btn--lg { --h: 56px; padding: 0 28px; font-size: 17px; border-radius: 14px; }
.btn--lg svg.i { width: 22px; height: 22px; }
.btn .winlogo { width: 18px; height: 18px; fill: currentColor; stroke: none; }

.textlink { display: inline-flex; align-items: center; gap: 6px; color: var(--brand-ink); font-weight: 700; transition: gap .2s; }
.textlink:hover { gap: 10px; }

/* ---------- 导航 ---------- */
.nav { position: sticky; top: 0; z-index: 50; background: transparent; border-bottom: 1px solid transparent; transition: background-color .25s, border-color .25s; }
.nav.is-scrolled, .nav.is-open { background: var(--nav-bg); border-bottom-color: var(--line); -webkit-backdrop-filter: saturate(1.6) blur(16px); backdrop-filter: saturate(1.6) blur(16px); }
.nav__in { display: flex; align-items: center; gap: 36px; height: var(--nav-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand__mark { width: 36px; height: 36px; }
.brand__name { display: block; font-size: 20px; font-weight: 900; color: var(--ink); line-height: 1.05; letter-spacing: .02em; }
.brand__en { display: block; font: 700 10.5px/1 var(--f-num); letter-spacing: .2em; color: var(--text-3); margin-top: 3px; }
.nav__links { display: flex; gap: 4px; margin-right: auto; }
.nav__links a { padding: 8px 14px; border-radius: 10px; font-size: 15px; font-weight: 500; color: var(--text-2); transition: color .2s, background-color .2s; }
.nav__links a:hover { color: var(--ink); background: var(--bg-3); }
.nav__links a[aria-current="page"] { color: var(--ink); font-weight: 700; }
.nav__cta { display: flex; align-items: center; gap: 10px; }
.nav__cta .btn { --h: 40px; padding: 0 16px; font-size: 14px; }
.theme-btn { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--card); color: var(--text-2); transition: color .2s, border-color .2s; }
.theme-btn:hover { color: var(--ink); border-color: var(--text-3); }
.theme-btn svg.i { width: 19px; height: 19px; }
.theme-btn .moon { display: none; }
[data-theme="dark"] .theme-btn .sun { display: none; }
[data-theme="dark"] .theme-btn .moon { display: block; }
.nav__toggle { display: none; width: 40px; height: 40px; border: 1px solid var(--line-2); border-radius: 12px; background: var(--card); position: relative; }
.nav__toggle span { position: absolute; left: 11px; right: 11px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform .25s, top .25s; }
.nav__toggle span:first-child { top: 15px; }
.nav__toggle span:last-child { top: 22px; }
.nav__toggle[aria-expanded="true"] span:first-child { top: 18.5px; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { top: 18.5px; transform: rotate(-45deg); }
.nav__drawer { display: grid; gap: 2px; padding-top: 8px; padding-bottom: 18px; }
.nav__drawer a { padding: 12px 4px; font-size: 17px; font-weight: 600; color: var(--ink); border-bottom: 1px solid var(--line); }

/* 两套 logo：白底用 light，深色用 dark */
.on-dark { display: none !important; }
[data-theme="dark"] .on-light { display: none !important; }
[data-theme="dark"] .on-dark { display: block !important; }

/* ---------- 首屏 ---------- */
.hero { position: relative; margin-top: calc(-1 * var(--nav-h)); padding-top: calc(var(--nav-h) + 64px); padding-bottom: 136px; overflow: hidden; isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(900px 520px at 8% 0%, var(--hero-a), transparent 65%),
    radial-gradient(760px 560px at 92% 18%, var(--hero-b), transparent 65%),
    linear-gradient(180deg, transparent 60%, var(--bg) 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(1000px 600px at 50% 10%, #000 30%, transparent 75%);
  mask-image: radial-gradient(1000px 600px at 50% 10%, #000 30%, transparent 75%);
}
.hero__in { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px 6px 6px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm); font-size: 13.5px; font-weight: 600; color: var(--text-2); }
.badge b { padding: 2px 10px; border-radius: 999px; background: var(--ink); color: var(--bg); font-size: 12px; font-weight: 700; }
.hero h1 { margin-top: 24px; }
.grad { background: linear-gradient(100deg, #10c9a7 0%, #19b9c9 45%, #3a8fff 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
[data-theme="dark"] .grad { background-image: linear-gradient(100deg, #2ee6c5 0%, #34d4e6 45%, #5aa9ff 100%); }
.hero__lead { margin-top: 24px; font-size: 19px; line-height: 1.8; color: var(--text-2); max-width: 30em; }
.hero__lead b { color: var(--ink); font-weight: 700; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero__fine { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 22px; font-size: 14px; color: var(--text-2); }
.hero__fine span { display: inline-flex; align-items: center; gap: 6px; }
.hero__fine svg.i { width: 17px; height: 17px; color: var(--brand-ink); stroke-width: 2.4; }

/* 字幕框：和软件里的字幕窗口同一套样式（overlay.py：圆角 14、中文白、英文 #AEB8C3、黑话淡青、纠正暖黄） */
.live-wrap { position: relative; isolation: isolate; }
.live-wrap::before { content: ""; position: absolute; inset: 8% 4% -6%; z-index: -1; border-radius: 40px; background: radial-gradient(60% 60% at 30% 30%, rgba(46, 230, 197, .45), transparent 70%), radial-gradient(60% 60% at 75% 70%, rgba(58, 155, 255, .4), transparent 70%); filter: blur(40px); opacity: .7; }
.live { position: relative; border-radius: 24px; background: #0d1218; border: 1px solid rgba(255, 255, 255, .08); box-shadow: 0 30px 70px rgba(11, 20, 30, .28), 0 8px 20px rgba(11, 20, 30, .12); overflow: hidden; color: #fff; }
.live__bar { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid rgba(255, 255, 255, .07); font-size: 13px; color: rgba(225, 233, 240, .7); }
.live__bar img { width: 22px; height: 22px; }
.live__bar b { color: #fff; font-weight: 700; }
.live__on { display: inline-flex; align-items: center; gap: 6px; margin-left: auto; padding: 3px 10px; border-radius: 99px; background: rgba(46, 230, 197, .12); color: #8edfd1; font-size: 12px; font-weight: 600; }
.live__on::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #2ee6c5; box-shadow: 0 0 0 3px rgba(46, 230, 197, .2); animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px rgba(46, 230, 197, 0); } }
.live__body { padding: 22px 22px 10px; }
.subs { display: flex; flex-direction: column; justify-content: flex-end; gap: 11px; height: 296px; overflow: hidden; padding: 16px 20px; border-radius: 14px; background: rgba(20, 26, 34, .9); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06); }
.sub { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 14px; flex: none; transition: opacity .35s ease, transform .35s ease; }
.sub__zh { grid-column: 1; font-size: 19px; font-weight: 700; line-height: 1.4; color: #fff; min-height: 1.4em; }
.sub__en { grid-column: 1; margin-top: 1px; font: 400 13.5px/1.45 var(--f-num); color: #aeb8c3; min-height: 1.45em; }
.sub__en .s { color: #8edfd1; }
.sub__en mark { background: none; color: #e8c27a; font-weight: 600; }
.sub__t { grid-column: 2; grid-row: 1 / span 2; align-self: center; font: 600 11.5px/1 var(--f-mono); color: #6ff3db; opacity: .85; }
.sub--old { opacity: .5; }
.sub--live .sub__en { color: #8a96a3; }
.sub--enter { opacity: 0; transform: translateY(8px); }
.caret { display: inline-block; width: 2px; height: 1em; vertical-align: -.12em; background: #6ff3db; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.live__foot { display: flex; flex-wrap: wrap; gap: 8px 18px; padding: 12px 22px 18px; font-size: 12.5px; color: rgba(225, 233, 240, .6); }
.live__foot span { display: inline-flex; align-items: center; gap: 7px; }
.live__foot i { width: 10px; height: 10px; border-radius: 3px; }

/* ---------- 三个卖点 ---------- */
.pillars { position: relative; z-index: 3; margin-top: -72px; }
.pillars__in { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.pillar { position: relative; padding: 30px 28px 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-md); overflow: hidden; }
.pillar__k { display: block; font: 700 12.5px/1 var(--f-num); letter-spacing: .16em; color: var(--brand-ink); text-transform: uppercase; }
.pillar h3 { margin-top: 18px; font-size: 26px; font-weight: 900; letter-spacing: -.01em; }
.pillar p { margin-top: 10px; font-size: 15px; line-height: 1.8; color: var(--text-2); }
.pillar__note { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; padding: 5px 12px; border-radius: 99px; background: var(--brand-soft); color: var(--brand-ink); font-size: 13px; font-weight: 700; }
.pillar__note svg.i { width: 16px; height: 16px; stroke-width: 2.4; }
.ico { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; flex: none; }
.ico svg.i { width: 24px; height: 24px; color: #fff; stroke-width: 2; }
.pillar .ico { position: absolute; top: 26px; right: 26px; }
.tile-brand { background: linear-gradient(140deg, #3cefd0, #12b8a0); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .4), 0 6px 14px rgba(18, 184, 160, .3); }
.tile-blue { background: linear-gradient(140deg, #62b2ff, #2a7ef0); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .4), 0 6px 14px rgba(42, 126, 240, .28); }
.tile-ink { background: linear-gradient(140deg, #2a323c, #0b0e13); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15), 0 6px 14px rgba(11, 14, 19, .25); }
.tile-amber { background: linear-gradient(140deg, #ffc76b, #f59e0b); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .4), 0 6px 14px rgba(245, 158, 11, .28); }
[data-theme="dark"] .tile-ink { background: linear-gradient(140deg, #3a4552, #1b222b); }

/* ---------- 区块 ---------- */
.section { padding: 120px 0; position: relative; }
.section--tint { background: var(--bg-2); }
.sec-head { max-width: 720px; }
.sec-head--center { margin: 0 auto; text-align: center; }
.kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--brand-ink); letter-spacing: .04em; }
.kicker::before { content: ""; width: 18px; height: 2px; border-radius: 2px; background: currentColor; }
.sec-head--center .kicker::after { content: ""; width: 18px; height: 2px; border-radius: 2px; background: currentColor; }
.sec-head h2 { margin-top: 14px; }
.sec-head > p:not(.kicker) { margin-top: 16px; font-size: 17.5px; color: var(--text-2); }

/* ---------- 机翻 vs 瞬译 ---------- */
.versus { margin-top: 56px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-md); overflow: hidden; }
.versus__head, .versus__row { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 1fr); }
.versus__head { background: var(--card-2); border-bottom: 1px solid var(--line); font-size: 13.5px; font-weight: 700; color: var(--text-3); }
.versus__head > div { padding: 16px 28px; display: flex; align-items: center; gap: 8px; }
.versus__head .us { color: var(--brand-ink); }
.versus__head .us img { width: 22px; height: 22px; }
.versus__row + .versus__row { border-top: 1px solid var(--line); }
.versus__row > div { padding: 22px 28px; display: flex; flex-direction: column; justify-content: center; gap: 4px; min-width: 0; }
.versus__row .en { font: 600 17px/1.45 var(--f-num); color: var(--ink); }
.versus__row .en small { display: inline-flex; align-items: center; gap: 4px; margin-top: 4px; font: 500 12.5px/1.4 var(--f-sans); color: var(--amber-ink); }
.versus__row .mt { color: var(--text-3); font-size: 16px; }
.versus__row .mt span { text-decoration: line-through; text-decoration-color: rgba(214, 64, 74, .55); text-decoration-thickness: 1.5px; }
.versus__row .mt em, .versus__row .ok em { font-style: normal; font-size: 12.5px; font-weight: 600; }
.versus__row .mt em { color: var(--red-ink); }
.versus__row .ok { background: linear-gradient(90deg, var(--brand-soft), transparent 140%); }
.versus__row .ok strong { font-size: 18px; font-weight: 800; color: var(--ink); }
.versus__row .ok em { color: var(--brand-ink); }

/* ---------- 口音 ---------- */
.accent { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; align-items: center; margin-top: 96px; }
.accent .sec-head h2 { font-size: clamp(26px, 2.8vw, 36px); }
.accent__list { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: 999px; background: var(--chip-bg); border: 1px solid var(--line); font-size: 15px; font-weight: 600; color: var(--ink); white-space: nowrap; box-shadow: var(--shadow-sm); transition: transform .2s, border-color .2s; }
.chip:hover { transform: translateY(-2px); border-color: var(--brand-line); }
.chip--hot { background: var(--brand-soft); border-color: var(--brand-line); color: var(--brand-ink); }

/* ---------- 功能卡 ---------- */
.feats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 56px; }
.feat { padding: 30px 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .25s ease; }
.feat:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feat h3 { margin-top: 22px; font-size: 19px; }
.feat p { margin-top: 10px; font-size: 15px; line-height: 1.8; color: var(--text-2); }
.feat p b { color: var(--ink); }

/* ---------- 主播模式：跟整站一样走白色主题，用一块淡渐变底板突出；右边的直播字幕卡本身是深色（直播画面里就是这样） ---------- */
.stream-panel { position: relative; padding: 64px 60px; border-radius: 32px; overflow: hidden; isolation: isolate; background: linear-gradient(120deg, #e8fbf6 0%, #eaf3ff 100%); border: 1px solid var(--line); }
[data-theme="dark"] .stream-panel { background: linear-gradient(120deg, #0f2a27 0%, #0f1d33 100%); }
.stream-panel::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(520px 320px at 0% 0%, rgba(46, 230, 197, .28), transparent 70%), radial-gradient(520px 360px at 100% 100%, rgba(58, 155, 255, .22), transparent 70%); }
.new-tag { display: inline-block; margin-left: 4px; padding: 1px 8px; border-radius: 99px; background: linear-gradient(100deg, #2ee6c5, #3a9bff); color: #04201c; font: 700 11px/1.6 var(--f-num); letter-spacing: .08em; }
.stream { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 56px; align-items: center; }
.stream__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 32px; }
.stream__item { padding: 20px; border-radius: 18px; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.stream__item .ico { width: 40px; height: 40px; border-radius: 12px; }
.stream__item .ico svg.i { width: 20px; height: 20px; }
.stream__item h3 { margin-top: 14px; font-size: 16.5px; }
.stream__item p { margin-top: 6px; font-size: 14px; line-height: 1.75; color: var(--text-2); }
.stream__item b { color: var(--ink); }
.cast__frame { border-radius: 22px; background: linear-gradient(160deg, #1a222c, #10151c); border: 1px solid rgba(255, 255, 255, .09); box-shadow: 0 30px 70px rgba(11, 20, 30, .28), 0 8px 20px rgba(11, 20, 30, .12); overflow: hidden; }
.cast__bar { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid rgba(255, 255, 255, .07); font-size: 12.5px; color: #9aa7b4; white-space: nowrap; }
.cast__rec { display: inline-flex; align-items: center; gap: 6px; padding: 2px 9px; border-radius: 99px; background: rgba(255, 90, 90, .15); color: #ff8a8a; font-size: 11.5px; font-weight: 700; }
.cast__rec::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #ff5a5a; animation: blink-rec 1.6s ease-in-out infinite; }
@keyframes blink-rec { 50% { opacity: .35; } }
.cast__mode { margin-left: auto; color: #e8c27a; }
.cast__body { display: grid; gap: 12px; padding: 22px; }
.cline { display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: 12px; padding: 12px 14px; border-radius: 14px; background: rgba(0, 0, 0, .35); }
.cline .who { grid-row: 1 / span 2; align-self: start; margin-top: 3px; padding: 1px 8px; border-radius: 6px; background: rgba(58, 155, 255, .18); color: #8cc4ff; font-size: 11.5px; font-weight: 700; line-height: 1.7; }
.cline--host .who { background: rgba(46, 230, 197, .18); color: #6ff3db; }
.cline .zh { font-size: 18px; font-weight: 700; line-height: 1.45; color: #fff; }
.cline .en { font: 400 13px/1.5 var(--f-num); color: #aeb8c3; }
.cline .en s { text-decoration: none; color: #e8c27a; font-weight: 600; }
.cast__caption { margin-top: 14px; text-align: center; font-size: 13px; color: var(--text-3); }

/* ---------- 三步上手 ---------- */
.steps { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 56px; }
.step { position: relative; padding: 32px 28px 30px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-sm); }
.step__n { display: block; font: 700 56px/1 var(--f-num); letter-spacing: -.03em; color: transparent; -webkit-text-stroke: 1.5px var(--line-2); transition: -webkit-text-stroke-color .25s; }
.step:hover .step__n { -webkit-text-stroke-color: var(--brand-2); }
.step h3 { margin-top: 18px; font-size: 20px; }
.step p { margin-top: 10px; font-size: 15px; color: var(--text-2); line-height: 1.8; }
.steps__more { margin-top: 36px; text-align: center; }

/* ---------- 价格 ---------- */
.price-top { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.seg { display: inline-flex; padding: 4px; border-radius: 14px; background: var(--bg-3); border: 1px solid var(--line); }
.seg button { padding: 8px 18px; border: 0; border-radius: 10px; background: transparent; font-size: 14px; font-weight: 600; color: var(--text-2); transition: background-color .2s, color .2s, box-shadow .2s; }
.seg button[aria-pressed="true"] { background: var(--card); color: var(--ink); box-shadow: var(--shadow-sm); }
.plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; margin-top: 48px; align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; padding: 30px 26px 26px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.plan:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.plan--best { background: linear-gradient(var(--card), var(--card)) padding-box, linear-gradient(150deg, #2ee6c5, #3a9bff) border-box; border: 2px solid transparent; box-shadow: 0 20px 50px rgba(31, 209, 178, .18), var(--shadow-md); }
.plan__badge { position: absolute; top: -13px; left: 26px; padding: 4px 12px; border-radius: 999px; background: linear-gradient(100deg, #2ee6c5, #3a9bff); color: #04201c; font-size: 12.5px; font-weight: 800; letter-spacing: .04em; box-shadow: var(--glow-brand); }
.plan__name { font-size: 18px; font-weight: 800; }
.plan__note { margin-top: 4px; font-size: 13.5px; color: var(--text-3); }
.plan__mins { display: flex; align-items: baseline; gap: 6px; margin-top: 24px; color: var(--ink); }
.plan__mins b { font: 700 54px/1 var(--f-num); letter-spacing: -.03em; }
.plan__mins span { font-size: 17px; font-weight: 700; }
.plan__price { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; margin-top: 16px; }
.plan__price strong { font: 700 26px/1 var(--f-num); color: var(--ink); letter-spacing: -.01em; }
.plan__per { padding: 3px 9px; border-radius: 999px; background: var(--bg-3); font-size: 12.5px; color: var(--text-2); }
.plan--best .plan__per { background: var(--brand-soft); color: var(--brand-ink); font-weight: 600; }
.plan__list { list-style: none; display: grid; gap: 10px; margin: 22px 0 26px; padding-top: 20px; border-top: 1px dashed var(--line-2); font-size: 14.5px; color: var(--text-2); }
.plan__list li { display: flex; align-items: center; gap: 8px; }
.plan__list svg.i { width: 18px; height: 18px; color: var(--brand-ink); stroke-width: 2.4; }
.plan .btn { margin-top: auto; width: 100%; }
.price-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 28px; }
.price-note { display: flex; gap: 14px; padding: 20px 22px; border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--line); font-size: 14px; color: var(--text-2); line-height: 1.75; }
.price-note svg.i { width: 22px; height: 22px; margin-top: 1px; color: var(--brand-ink); }
.price-note b { color: var(--ink); }

/* ---------- 放心用 ---------- */
.trust { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; align-items: center; }
.trust__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.trust__item { padding: 24px; border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.trust__item .ico { width: 42px; height: 42px; border-radius: 12px; }
.trust__item .ico svg.i { width: 21px; height: 21px; }
.trust__item h3 { margin-top: 16px; font-size: 17px; }
.trust__item p { margin-top: 6px; font-size: 14px; color: var(--text-2); line-height: 1.7; }
.trust__item a, .sec-head p a { color: var(--brand-ink); font-weight: 600; }

/* ---------- 常见问题 ---------- */
.faq-wrap { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 64px; align-items: start; }
.faq-side { position: sticky; top: calc(var(--nav-h) + 32px); }
.help { margin-top: 28px; padding: 22px; border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.help h3 { font-size: 16px; }
.help p { margin-top: 4px; font-size: 14px; color: var(--text-2); }
.copy-mail { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 14px; padding: 10px 10px 10px 14px; border-radius: 12px; background: var(--bg-2); border: 1px solid var(--line); font: 600 14px/1.3 var(--f-num); color: var(--ink); min-width: 0; }
.copy-mail span { overflow: hidden; text-overflow: ellipsis; }
.copy-mail button { flex: none; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line-2); background: var(--card); font: 600 12.5px/1.3 var(--f-sans); color: var(--text); }
.copy-mail button:hover { border-color: var(--text-3); }
.faq { display: grid; gap: 12px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow-sm); transition: border-color .2s, box-shadow .2s; }
.faq details[open] { border-color: var(--brand-line); box-shadow: var(--shadow-md); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 22px; list-style: none; cursor: pointer; font-size: 16.5px; font-weight: 700; color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 26px; height: 26px; border-radius: 8px; background: var(--bg-3) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237a8693' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center / 16px no-repeat; transition: transform .25s, background-color .25s; }
.faq details[open] summary::after { transform: rotate(45deg); background-color: var(--brand-soft); }
.faq details > div { padding: 0 22px 20px; display: grid; gap: 10px; font-size: 15px; color: var(--text-2); line-height: 1.85; }
.faq details a { color: var(--brand-ink); font-weight: 600; }

/* ---------- 底部号召 ---------- */
.cta { position: relative; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 36px; align-items: center; padding: 56px 60px; border-radius: 32px; overflow: hidden; isolation: isolate; background: linear-gradient(120deg, #e3fbf5 0%, #e6f1ff 100%); border: 1px solid var(--line); }
[data-theme="dark"] .cta { background: linear-gradient(120deg, #0f2a27 0%, #0f1d33 100%); }
.cta::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(500px 300px at 85% 120%, rgba(58, 155, 255, .25), transparent 70%), radial-gradient(400px 280px at 0% -20%, rgba(46, 230, 197, .35), transparent 70%); }
.cta__icon { width: 104px; height: 104px; border-radius: 24px; box-shadow: 0 18px 40px rgba(11, 14, 19, .25); }
.cta h2 { font-size: clamp(26px, 3vw, 38px); }
.cta p { margin-top: 10px; font-size: 17px; color: var(--text-2); }
.cta__btns { display: flex; flex-direction: column; gap: 10px; align-items: stretch; }

/* ---------- 页脚 ---------- */
.foot { padding: 72px 0 36px; background: var(--bg-2); border-top: 1px solid var(--line); }
.foot__in { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, .8fr) minmax(0, .8fr) minmax(0, 1.4fr); gap: 40px; }
.foot__brand img { width: 150px; height: auto; margin-left: -6px; }
.foot__brand p { margin-top: 14px; font-size: 14px; color: var(--text-2); line-height: 1.8; }
.foot h4 { font-size: 14px; font-weight: 700; color: var(--ink); }
.foot ul { list-style: none; display: grid; gap: 10px; margin-top: 16px; font-size: 14px; color: var(--text-2); }
.foot ul a:hover, .foot ul a[aria-current="page"] { color: var(--brand-ink); }
.foot .copy-mail { margin-top: 0; background: var(--card); }
.foot__legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 32px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: var(--text-3); }

/* ---------- 右下角浮动按钮 ---------- */
.dock { position: fixed; right: max(16px, env(safe-area-inset-right, 0px)); bottom: max(20px, env(safe-area-inset-bottom, 0px)); z-index: 40; display: grid; gap: 10px; transition: opacity .3s, transform .3s; }
.dock.is-away { opacity: 0; transform: translateY(12px); pointer-events: none; }
.dock__btn { display: grid; justify-items: center; gap: 2px; width: 64px; padding: 10px 0 9px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); box-shadow: var(--shadow-lg); font-size: 11.5px; font-weight: 700; color: var(--text); transition: transform .2s; }
.dock__btn:hover { transform: translateY(-2px); }
.dock__btn svg.i { width: 24px; height: 24px; color: var(--brand-ink); }
.dock__btn--brand { border: 0; background: linear-gradient(160deg, #3cefd0, #14bba2); color: #052520; }
.dock__btn--brand svg.i { color: #052520; }

/* ---------- 弹窗 ---------- */
.sheet { width: min(440px, calc(100% - 32px)); padding: 30px; border: 1px solid var(--line); border-radius: 24px; background: var(--card); color: var(--text); box-shadow: var(--shadow-lg); }
.sheet::backdrop { background: rgba(11, 14, 19, .45); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.sheet__icon { width: 56px; height: 56px; border-radius: 14px; margin-bottom: 18px; }
.sheet h3 { font-size: 21px; }
.sheet p { margin-top: 10px; font-size: 15px; color: var(--text-2); line-height: 1.8; }
.sheet b { color: var(--ink); }
.sheet .row { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; }

/* ---------- 文档页（指南、条款） ---------- */
.doc-hero { position: relative; margin-top: calc(-1 * var(--nav-h)); padding: calc(var(--nav-h) + 64px) 0 56px; overflow: hidden; isolation: isolate; border-bottom: 1px solid var(--line); }
.doc-hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(700px 360px at 10% 0%, var(--hero-a), transparent 65%), radial-gradient(600px 360px at 90% 0%, var(--hero-b), transparent 65%); }
.doc-hero h1 { font-size: clamp(32px, 4vw, 48px); }
.doc-hero p:not(.kicker) { margin-top: 16px; max-width: 46em; font-size: 17px; color: var(--text-2); }
.doc-hero .doc-meta { font-size: 14px; color: var(--text-3); }
.doc { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 64px; padding-top: 56px; padding-bottom: 72px; align-items: start; }
.toc { position: sticky; top: calc(var(--nav-h) + 28px); display: grid; gap: 2px; padding-left: 14px; border-left: 2px solid var(--line); }
.toc a { padding: 6px 0; font-size: 14.5px; color: var(--text-2); }
.toc a:hover { color: var(--brand-ink); }
.prose { max-width: 760px; font-size: 16.5px; line-height: 1.9; color: var(--text); }
.prose h2 { margin: 52px 0 16px; font-size: 26px; font-weight: 800; padding-top: 8px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 30px 0 10px; font-size: 18.5px; }
.prose p + p, .prose p + ul, .prose p + ol, .prose ul + p, .prose ol + p { margin-top: 14px; }
.prose ul, .prose ol { padding-left: 1.4em; display: grid; gap: 8px; }
.prose li::marker { color: var(--brand-ink); font-weight: 700; }
.prose strong { color: var(--ink); }
.prose a { color: var(--brand-ink); font-weight: 600; text-decoration: underline; text-decoration-color: var(--brand-line); text-underline-offset: 3px; }
.prose code { white-space: normal; }
.callout { margin-top: 18px !important; padding: 16px 20px; border-radius: 14px; background: var(--amber-soft); border: 1px solid rgba(245, 158, 11, .25); color: var(--text); font-size: 15px; }
.path { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 14px 0; }
.path span { padding: 6px 12px; border-radius: 9px; background: var(--card); border: 1px solid var(--line-2); font-weight: 700; color: var(--ink); font-size: 14.5px; box-shadow: var(--shadow-sm); }
.path i { font-style: normal; color: var(--text-3); }
.table-wrap { margin: 18px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.prose table { width: 100%; min-width: 480px; border-collapse: collapse; font-size: 15px; line-height: 1.7; }
.prose th { text-align: left; padding: 12px 16px; background: var(--card-2); color: var(--text-2); font-size: 13.5px; font-weight: 700; border-bottom: 1px solid var(--line); }
.prose td { padding: 12px 16px; border-top: 1px solid var(--line); vertical-align: top; }
.prose tr:first-child td { border-top: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .nav__links { display: none; }
  .nav__cta .btn--ghost { display: none; }
  .nav__toggle { display: inline-block; }
  .nav__in { gap: 12px; justify-content: space-between; }
  .nav__cta { margin-left: auto; }
  .hero { padding-top: calc(var(--nav-h) + 40px); }
  .hero__in { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  .hero__copy { text-align: center; }
  .hero__lead { margin-left: auto; margin-right: auto; }
  .hero__actions, .hero__fine { justify-content: center; }
  .live-wrap { max-width: 620px; margin: 0 auto; width: 100%; }
  .pillars__in { grid-template-columns: minmax(0, 1fr); max-width: 620px; margin: 0 auto; }
  .accent, .trust, .faq-wrap, .stream { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .stream-panel { padding: 44px 32px; }
  .faq-side { position: static; }
  .feats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 20px; }
  .steps { grid-template-columns: minmax(0, 1fr); max-width: 620px; margin-left: auto; margin-right: auto; }
  .price-notes { grid-template-columns: minmax(0, 1fr); }
  .cta { grid-template-columns: minmax(0, 1fr); text-align: center; justify-items: center; padding: 44px 28px; }
  .cta__btns { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .foot__in { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .foot__brand { grid-column: 1 / -1; }
  .doc { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .toc { position: static; display: flex; flex-wrap: wrap; gap: 8px; padding-left: 0; border-left: 0; }
  .toc a { padding: 6px 12px; border-radius: 99px; border: 1px solid var(--line); background: var(--card); font-size: 13.5px; }
}
@media (max-width: 720px) {
  .wrap { padding-left: max(18px, env(safe-area-inset-left, 0px)); padding-right: max(18px, env(safe-area-inset-right, 0px)); }
  .section { padding: 80px 0; }
  .hero { padding-bottom: 104px; }
  .hero__lead { font-size: 16.5px; }
  .hero__actions .btn { flex: 1 1 100%; }
  .live { border-radius: 20px; }
  .live__bar { white-space: nowrap; }
  .live__bar > span:not(.live__on) { display: none; }
  .live__body { padding: 14px 14px 6px; }
  .subs { height: 248px; padding: 14px; gap: 9px; }
  .sub__zh { font-size: 16.5px; }
  .sub__en { font-size: 12.5px; }
  .live__foot { padding: 10px 16px 14px; font-size: 12px; }
  .pillar { padding: 24px 22px; }
  .pillar h3 { font-size: 22px; margin-top: 14px; }
  .pillar .ico { width: 42px; height: 42px; top: 20px; right: 20px; }
  .versus__head { display: none; }
  .versus__row { grid-template-columns: minmax(0, 1fr); }
  .versus__row > div { padding: 6px 20px; }
  .versus__row > div:first-child { padding-top: 20px; }
  .versus__row > div:last-child { padding-bottom: 20px; margin-top: 6px; }
  .versus__row .mt::before { content: "普通机翻"; font-size: 12px; font-weight: 700; color: var(--text-3); }
  .versus__row .ok::before { content: "瞬译"; font-size: 12px; font-weight: 700; color: var(--brand-ink); }
  .versus__row .ok { background: var(--brand-soft); padding-top: 12px !important; padding-bottom: 14px !important; }
  .accent { margin-top: 72px; }
  .stream__list { grid-template-columns: minmax(0, 1fr); }
  .stream-panel { padding: 32px 16px; border-radius: 24px; }
  .cast__body { padding: 14px; }
  .cline .zh { font-size: 16px; }
  .cast__bar > span:nth-child(2) { display: none; }
  .chip { padding: 8px 13px; font-size: 14px; }
  .feats { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .feat, .trust__item { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 4px 16px; padding: 20px; align-items: start; }
  .feat .ico, .trust__item .ico { width: 44px; height: 44px; grid-row: 1 / span 2; }
  .feat .ico svg.i { width: 22px; height: 22px; }
  .feat h3, .trust__item h3 { margin-top: 0; font-size: 16.5px; }
  .feat p, .trust__item p { margin-top: 0; font-size: 14.5px; }
  .step { padding: 24px 22px; }
  .step__n { font-size: 44px; }
  .plans { grid-template-columns: minmax(0, 1fr); }
  .trust__list { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .foot__in { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot__in > div:last-child { grid-column: 1 / -1; }
  .dock { display: none; }
}
@media (max-width: 400px) {
  .brand__en { display: none; }
  .nav__cta .btn--primary { padding: 0 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .js .rv { opacity: 1; transform: none; }
}