/* ============================================================
   SentenceEcho — 官网样式
   版式规范见 site/设计说明.md；无外部依赖、无构建步骤。
   ============================================================ */

:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel-2: #161e28;
  --line: #1e2833;
  --line-soft: rgba(230, 237, 244, .07);
  --txt: #e6edf4;
  --muted: #93a5b6;
  --dim: #7a8b9c;
  --blue: #56bcf4;
  --magenta: #e54eac;
  --magenta-lt: #f07cc0;
  --ink: #08111a;
  --max: 1180px;
  --gutter: clamp(20px, 4.2vw, 40px);
  --sec-y: clamp(30px, 3.8vw, 56px);
  --radius: 18px;
  /* 分节标题字阶（2026-10-28 由原 27/24px 基线整体放大）
     主标题＝原 clamp(27px,3.15vw,42px) 的 2 倍；无编号小节＝原 24px 的约 2.1 倍；
     面板内标题取主标题的 .8，避免窄栏三行。 */
  --h2: clamp(40px, 6.3vw, 84px);
  --h2-panel: clamp(32px, 5.04vw, 67px);
  --h2-minor: clamp(30px, 3.78vw, 50px);
  --eyebrow: 16.5px;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
          "Noto Sans CJK SC", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html.i18n-pending body { opacity: 0; }

::selection { background: rgba(86, 188, 244, .3); color: #fff; }

a { color: var(--blue); text-decoration: none; }
a:hover { color: #8ed3f8; }

img { max-width: 100%; }

h1, h2, h3, h4, p, dl, dd, figure { margin: 0; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: 16px; top: -70px; z-index: 200;
  padding: 10px 16px; border-radius: 8px;
  background: var(--panel-2); color: var(--txt); font-size: 13px;
  border: 1px solid var(--line);
  transition: top .18s ease;
}
.skip:focus { top: 14px; }

/* ── 顶栏 ─────────────────────────────────────────────── */
.site-head {
  position: sticky; top: 0; z-index: 60;
  background: rgba(11, 15, 20, .82);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid rgba(230, 237, 244, .06);
}
.head-in {
  display: flex; align-items: center; gap: 28px;
  height: 76px;
}
/* 首屏第一行：横版 LOGO（原 24px → 48px，2.0×）+ 中文名「逐句」 */
.brand { display: inline-flex; align-items: center; gap: 13px; flex: none; }
.brand img { height: 48px; width: auto; display: block; }
.brand-cn {
  font-size: 21px;            /* ≈ 字标字高 24px 的 0.875 */
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1;
  color: var(--magenta);
  transform: translateY(-1px); /* 字标基线偏高，微调至视觉中轴 */
  white-space: nowrap;
}
.nav {
  display: flex; align-items: center; gap: 26px;
  margin-left: auto;
}
.nav a {
  font-size: 13.5px; color: var(--muted);
  transition: color .18s ease;
  white-space: nowrap;
}
.nav a:hover { color: var(--txt); }
.lang {
  flex: none;
  font-family: inherit;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--txt);
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(230, 237, 244, .14);
  border-radius: 999px;
  height: 30px;
  padding: 0 13px;
  cursor: pointer;
  transition: border-color .18s ease, background .18s ease;
}
.lang:hover { border-color: rgba(86, 188, 244, .5); background: rgba(86, 188, 244, .08); }

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 7.4vw, 100px) 0 0;
}
.hero-glow {
  position: absolute; left: -8%; right: -8%; top: -22%; height: 82%;
  background:
    radial-gradient(52% 58% at 16% 28%, rgba(86, 188, 244, .17), transparent 70%),
    radial-gradient(44% 52% at 84% 12%, rgba(229, 78, 172, .13), transparent 74%);
  pointer-events: none;
  filter: blur(6px);
}
.hero .wrap { position: relative; z-index: 1; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.62fr) minmax(252px, .78fr);
  gap: clamp(32px, 5vw, 68px);
  align-items: end;
}

.eyebrow {
  display: flex; align-items: center; gap: 10px;
  margin: 0 0 18px;
  font-size: 11px; line-height: 1.4;
  letter-spacing: .19em;
  color: var(--muted);
  text-transform: uppercase;
}
.eb-line {
  flex: none; width: 26px; height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--magenta));
}

.hero-h1 {
  font-size: clamp(38px, 4.5vw, 64px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -.017em;
  margin: 0 0 20px;
}
.hero-h1 span { display: block; }
.grad {
  background: linear-gradient(97deg, #56bcf4 4%, #9dc9ee 42%, #e54eac 96%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}

.tagline {
  display: flex; align-items: center; gap: 11px;
  font-size: clamp(14.5px, 1.35vw, 17px);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--txt);
  margin: 0 0 22px;
}
.tag-line {
  flex: none; width: 22px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--magenta));
}

.lead {
  max-width: 58ch;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.78;
  color: var(--muted);
  margin: 0 0 30px;
}

.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 46px; padding: 0 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-family: inherit; font-size: 14.5px; font-weight: 600;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform .16s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, filter .2s ease;
}
.btn .ico { flex: none; }
.btn-primary {
  color: var(--ink);
  background: linear-gradient(100deg, var(--blue), var(--magenta));
  box-shadow: 0 10px 28px rgba(86, 188, 244, .18);
}
.btn-primary:hover {
  color: var(--ink);
  filter: brightness(1.07);
  transform: translateY(-1px);
  box-shadow: 0 16px 38px rgba(86, 188, 244, .26);
}
.btn-ghost {
  color: var(--txt);
  background: rgba(255, 255, 255, .025);
  border-color: rgba(230, 237, 244, .16);
}
.btn-ghost:hover {
  color: var(--txt);
  background: rgba(255, 255, 255, .055);
  border-color: rgba(230, 237, 244, .28);
  transform: translateY(-1px);
}
.btn-lg { height: 54px; padding: 0 28px; font-size: 15.5px; border-radius: 14px; }

.hero-meta {
  margin: 20px 0 0;
  font-size: 12.5px;
  color: var(--dim);
  letter-spacing: .02em;
}

.facts {
  border-left: 1px solid var(--line);
  padding-left: clamp(18px, 2.4vw, 30px);
}
.fact {
  display: flex; flex-direction: column; gap: 2px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(230, 237, 244, .055);
}
.fact:last-child { border-bottom: 0; padding-bottom: 0; }
.fact:first-child { padding-top: 0; }
.fact-k {
  font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--dim);
}
.fact-v { font-size: 13.5px; color: #cfdae6; line-height: 1.5; }

/* ── 截图 ─────────────────────────────────────────────── */
.shot { margin: clamp(42px, 6vw, 82px) 0 0; }
/* 三张界面图统一：12px 圆角 + 1px 描边 + 轻投影（2026-10-28） */
.shot-frame {
  padding: 1px;
  border-radius: 13px;
  background: linear-gradient(158deg,
    rgba(86, 188, 244, .38) 0%,
    rgba(229, 78, 172, .18) 36%,
    rgba(230, 237, 244, .07) 74%);
  box-shadow: 0 24px 64px rgba(0, 0, 0, .45);
}
.shot-frame img {
  display: block; width: 100%; height: auto;
  border-radius: 12px;
}
.dlg-shot {
  display: block; width: 100%; height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: 0 10px 26px rgba(0, 0, 0, .32);
}
.shot-cap {
  display: flex; justify-content: space-between; gap: 20px;
  margin-top: 14px;
  font-size: 12px; color: var(--dim); line-height: 1.5;
}
.shot-cap-r { flex: none; }

/* ── 三条腿 ───────────────────────────────────────────── */
.legs-band {
  border-top: 1px solid var(--line-soft);
  margin-top: clamp(46px, 6vw, 82px);
}
.legs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.leg {
  padding: clamp(26px, 3.4vw, 40px) clamp(18px, 2.6vw, 34px);
  border-left: 1px solid var(--line-soft);
}
.leg:first-child { border-left: 0; padding-left: 0; }
.leg:last-child { padding-right: 0; }
.leg-k {
  display: flex; align-items: baseline; gap: 10px;
  margin: 0 0 10px;
  font-size: 10px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--dim);
}
.leg-num { font-family: var(--mono); font-size: 10px; color: var(--blue); letter-spacing: .06em; }
.leg h3 { font-size: 16.5px; font-weight: 600; margin: 0 0 8px; line-height: 1.4; }
.leg p { font-size: 13.2px; line-height: 1.67; color: var(--muted); margin: 0; }

/* ── 区块通用 ─────────────────────────────────────────── */
.section {
  padding: var(--sec-y) 0;
  border-top: 1px solid var(--line-soft);
}
/* 分节层级（2026-10-28）：主节＝全宽发丝线＋编号；能力细分＝短标记＋更紧的上边距；
   重点块＝整幅浅色底带。三层让读者一眼分出「主 / 次 / 辅」，不靠加大留白。 */
.section--minor {
  border-top: 0;
  padding-top: clamp(18px, 2.2vw, 30px);
}
.section--minor > .wrap::before {
  content: "";
  display: block;
  width: 44px; height: 1px;
  margin-bottom: clamp(13px, 1.7vw, 19px);
  background: linear-gradient(90deg, rgba(86, 188, 244, .55), rgba(229, 78, 172, .2));
}
.section--band {
  border-top: 1px solid rgba(86, 188, 244, .15);
  border-bottom: 1px solid rgba(230, 237, 244, .05);
  background:
    radial-gradient(80% 120% at 12% 0%, rgba(86, 188, 244, .05), transparent 62%),
    linear-gradient(180deg, #0e141c, #0b1017);
}
/* 标题放大后行宽同步加宽（原 800px），使 13 字长标题在桌面不超过两行 */
.sec-head { max-width: min(1100px, 100%); margin-bottom: clamp(14px, 2vw, 22px); }
.sec-head h2,
.spot-lead h2,
.dl-copy h2 {
  font-size: var(--h2);
  line-height: 1.14;
  font-weight: 600;
  letter-spacing: -.028em;
  margin: 0 0 14px;
  text-wrap: pretty;
}
/* 无编号小节标题（引擎 / 复读三档 / 查词 / 语言包 / 价格）：原 UA 默认 24px */
.section > .wrap > h2 {
  font-size: var(--h2-minor);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: -.022em;
  margin: 0 0 12px;
  text-wrap: pretty;
}
/* 编号眉标随标题放大 1.5×（11 → 16.5），保持引导标签层级，不与主标题争夺重心 */
.sec-head .eyebrow,
.spot-lead .eyebrow,
.dl-copy .eyebrow { font-size: var(--eyebrow); letter-spacing: .16em; margin-bottom: 14px; }
.sec-sub {
  max-width: 64ch;
  font-size: clamp(14.5px, 1.35vw, 16px);
  line-height: 1.72;
  color: var(--muted);
  margin: 0;
}

/* ── 痛点 ─────────────────────────────────────────────── */
.pains { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.pain {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) minmax(0, 1.06fr);
  gap: clamp(16px, 3vw, 44px);
  padding: clamp(22px, 2.6vw, 30px) 0;
  border-bottom: 1px solid var(--line-soft);
}
.p-num {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--dim);
  padding-top: 5px;
  letter-spacing: .06em;
}
.p-text h3 {
  font-size: clamp(16px, 1.55vw, 18.5px);
  font-weight: 600;
  line-height: 1.48;
  margin: 0 0 8px;
}
.p-text p { font-size: 14.2px; line-height: 1.7; color: var(--muted); margin: 0; }
.p-solve {
  border-left: 1px solid rgba(86, 188, 244, .28);
  padding-left: clamp(16px, 2vw, 26px);
}
.p-label {
  display: inline-block;
  margin-bottom: 7px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--blue);
}
.p-solve p { font-size: 14.2px; line-height: 1.7; color: #cfdae6; margin: 0; }

/* ── 模块 ─────────────────────────────────────────────── */
.modules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 1.8vw, 20px);
}
.module {
  padding: clamp(22px, 2.5vw, 30px);
  border: 1px solid rgba(230, 237, 244, .075);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #121821 0%, #0e141b 100%);
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.module:hover {
  border-color: rgba(86, 188, 244, .3);
  transform: translateY(-2px);
  box-shadow: 0 22px 54px rgba(0, 0, 0, .36);
}
.m-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.m-ico {
  width: 36px; height: 36px; border-radius: 10px;
  display: grid; place-items: center;
  color: var(--blue);
  background: rgba(86, 188, 244, .1);
  border: 1px solid rgba(86, 188, 244, .18);
}
.m-ico.mag {
  color: var(--magenta-lt);
  background: rgba(229, 78, 172, .1);
  border-color: rgba(229, 78, 172, .2);
}
.m-num { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: .12em; }
.module h3 { font-size: 19px; font-weight: 600; letter-spacing: -.01em; margin: 0 0 16px; }
.m-body { display: flex; flex-direction: column; gap: 12px; margin: 0 0 18px; }
.m-body dt {
  font-size: 9.5px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--dim); margin-bottom: 3px;
}
.m-body dd { font-size: 13.6px; line-height: 1.62; color: #b9c7d6; margin: 0; }
.chips {
  display: flex; flex-wrap: wrap; gap: 6px;
  list-style: none; margin: 0; padding: 16px 0 0;
  border-top: 1px solid rgba(230, 237, 244, .06);
}
.chips li {
  font-size: 11.3px; line-height: 1.4;
  color: #a9b9c9;
  padding: 4px 9px;
  border: 1px solid rgba(230, 237, 244, .09);
  border-radius: 999px;
  background: rgba(255, 255, 255, .02);
}

/* ── 无字幕 spotlight ─────────────────────────────────── */
.spot {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: clamp(26px, 4vw, 60px);
  padding: clamp(28px, 4vw, 52px);
  border: 1px solid rgba(230, 237, 244, .09);
  border-radius: 24px;
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(86, 188, 244, .09), transparent 55%),
    radial-gradient(120% 120% at 100% 100%, rgba(229, 78, 172, .07), transparent 55%),
    #0f151d;
  overflow: hidden;
}
.spot-lead h2 {
  font-size: var(--h2-panel);
  line-height: 1.16;
  text-wrap: pretty;
}
.spot-sub {
  font-size: 14.6px; line-height: 1.72; color: var(--muted);
  max-width: 46ch; margin: 0;
}
.spot-list { list-style: none; margin: 0; padding: 0; }
.spot-list li { padding: 11px 0; border-top: 1px solid rgba(230, 237, 244, .08); }
.spot-list li:first-child { border-top: 0; padding-top: 0; }
.spot-list h3 {
  display: flex; align-items: center; gap: 9px;
  font-size: 15px; font-weight: 600; margin: 0 0 5px;
}
.spot-list h3::before {
  content: ""; flex: none;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 9px rgba(86, 188, 244, .65);
}
.spot-list li:nth-child(2) h3::before {
  background: var(--magenta-lt);
  box-shadow: 0 0 9px rgba(229, 78, 172, .55);
}
.spot-list p { font-size: 13.6px; line-height: 1.62; color: var(--muted); margin: 0; }
.spot-note {
  grid-column: 1 / -1;
  margin: 0; padding-top: 18px;
  border-top: 1px solid rgba(230, 237, 244, .08);
  font-size: 12px; line-height: 1.62; color: var(--dim);
}

/* ── 对比表 ───────────────────────────────────────────── */
.table-wrap {
  border: 1px solid rgba(230, 237, 244, .09);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #111821, #0e141b);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-wrap::-webkit-scrollbar { height: 10px; }
.table-wrap::-webkit-scrollbar-track { background: transparent; }
.table-wrap::-webkit-scrollbar-thumb {
  background: #22303f; border-radius: 999px; border: 3px solid #0e141b;
}
.cmp {
  width: 100%;
  min-width: 960px;
  border-collapse: separate;
  border-spacing: 0;
}
.cmp th, .cmp td {
  padding: 13px 14px;
  text-align: center;
  border-bottom: 1px solid rgba(230, 237, 244, .055);
}
.cmp thead th {
  padding: 16px 14px;
  font-size: 11px; font-weight: 600; letter-spacing: .1em;
  color: var(--muted);
  white-space: nowrap;
  border-bottom: 1px solid rgba(230, 237, 244, .1);
  background: #111821;
}
.cmp thead th:first-child {
  position: sticky; left: 0; z-index: 3;
  text-align: left; padding-left: 20px;
  box-shadow: 1px 0 0 rgba(230, 237, 244, .06);
}
.cmp tbody th {
  width: 28%;
  padding-left: 20px;
  text-align: left;
  font-size: 13px; font-weight: 500;
  color: #c6d2df;
  position: sticky; left: 0; z-index: 2;
  background: #111821;
  box-shadow: 1px 0 0 rgba(230, 237, 244, .06);
}
.cmp tbody tr:hover th { background: #131b24; }
.cmp tbody tr:hover td { background-color: rgba(255, 255, 255, .018); }
.cmp tbody tr:last-child th,
.cmp tbody tr:last-child td { border-bottom: 0; }
.cmp .is-us { background: rgba(86, 188, 244, .055); }
.cmp thead .is-us { color: var(--txt); }
.cmp thead .is-us::before {
  content: ""; display: block;
  position: absolute; top: 0; height: 2px; left: 0; right: 0;
  background: linear-gradient(90deg, var(--blue), var(--magenta));
}
.cmp thead .is-us { position: relative; }
.cmp td.is-us { color: var(--txt); font-weight: 600; }
.cmp tbody tr:hover td.is-us { background-color: rgba(86, 188, 244, .075); }
.v { display: inline-block; line-height: 1; }
.yes .v { color: var(--blue); font-size: 16px; font-weight: 700; }
.part .v {
  color: #a9b9c9; font-size: 11px;
  padding: 3px 7px; border-radius: 999px;
  border: 1px solid rgba(230, 237, 244, .12);
}
.no .v { color: #7a8b9c; font-size: 14px; }
.free {
  color: #fff; font-size: 11.5px; font-weight: 600;
  padding: 3px 10px; border-radius: 999px;
  background: linear-gradient(100deg, rgba(86, 188, 244, .22), rgba(229, 78, 172, .22));
  border: 1px solid rgba(86, 188, 244, .35);
}
.free .bi-en { color: rgba(255, 255, 255, .88); font-size: 10px; margin-top: 2px; }
.table-note {
  margin: 14px 0 0;
  font-size: 12px; line-height: 1.65; color: var(--dim);
  max-width: 84ch;
}
.table-hint { display: none; }

/* ── 流水线 ───────────────────────────────────────────── */
.pipeline {
  padding: clamp(26px, 3.6vw, 44px);
  border: 1px solid rgba(230, 237, 244, .09);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(86, 188, 244, .055), rgba(229, 78, 172, .025) 72%, transparent);
  overflow: hidden;
}
.pipe-badge {
  display: inline-flex; align-items: center; gap: 8px;
  margin-bottom: clamp(24px, 3vw, 36px);
  padding: 6px 12px;
  border: 1px solid rgba(230, 237, 244, .12);
  border-radius: 999px;
  background: rgba(11, 15, 20, .45);
  font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase;
  color: #c6d2df;
}
.pipe-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: linear-gradient(100deg, var(--blue), var(--magenta));
  box-shadow: 0 0 10px rgba(86, 188, 244, .7);
}
.steps {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}
.step { position: relative; padding-right: 14px; }
.step::after {
  content: ""; position: absolute;
  top: 13px; left: 28px; right: 2px; height: 1px;
  background: linear-gradient(90deg, rgba(86, 188, 244, .45), rgba(229, 78, 172, .1));
}
.step:last-child::after { display: none; }
.step-num {
  position: relative; z-index: 1;
  width: 27px; height: 27px; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 10.5px;
  color: var(--blue);
  background: #0b0f14;
  border: 1px solid rgba(86, 188, 244, .4);
}
.step h3 { font-size: 14px; font-weight: 600; margin: 14px 0 5px; line-height: 1.4; }
.step p { font-size: 12px; line-height: 1.55; color: var(--muted); margin: 0; }
.pipe-foot {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding-top: 20px;
  border-top: 1px dashed rgba(230, 237, 244, .1);
  font-size: 12px; color: var(--muted); letter-spacing: .02em;
}
.pipe-foot .sep { color: #5b6b7c; }
.pipe-note {
  margin-top: 22px;
  padding-left: clamp(0px, 2vw, 20px);
  border-left: 1px solid rgba(229, 78, 172, .25);
  max-width: 80ch;
}
.pipe-note p { font-size: 14px; line-height: 1.75; color: var(--muted); margin: 0; }
.pipe-h span { display: block; }
.keys-h span { display: block; }
html[lang="en"] .keys-h span + span { margin-left: .25em; }

/* ── 数字 ─────────────────────────────────────────────── */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(22px, 3.2vw, 46px);
}
.stat { padding-top: 20px; border-top: 1px solid rgba(230, 237, 244, .12); }
.stat-num {
  display: flex; align-items: baseline; gap: 7px;
  margin: 0 0 12px;
  font-size: clamp(30px, 3.3vw, 44px);
  font-weight: 700; line-height: 1;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.stat-num .arr { font-size: .6em; font-weight: 400; color: #5b6b7c; }
.stat-num .hl {
  background: linear-gradient(100deg, var(--blue), var(--magenta));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.stat-label { font-size: 14px; font-weight: 600; color: var(--txt); margin: 0 0 8px; line-height: 1.5; }
.stat-note { font-size: 12px; line-height: 1.62; color: var(--dim); margin: 0; }
.stats-note { margin: clamp(26px, 3vw, 36px) 0 0; font-size: 12px; color: var(--dim); }

.esc-band {
  display: flex; align-items: center;
  gap: clamp(16px, 2.6vw, 30px);
  margin-top: clamp(22px, 2.8vw, 32px);
  padding: clamp(18px, 2.2vw, 24px) clamp(20px, 2.8vw, 30px);
  border: 1px solid rgba(230, 237, 244, .1);
  border-radius: 16px;
  background: linear-gradient(100deg,
    rgba(86, 188, 244, .075),
    rgba(229, 78, 172, .04) 70%,
    transparent);
}
.esc-key { flex: none; }
.esc-key kbd {
  font-size: 15px; padding: 10px 16px; border-radius: 9px;
  color: var(--txt);
  border-color: rgba(86, 188, 244, .42);
  box-shadow: 0 0 0 1px rgba(86, 188, 244, .1), 0 8px 20px rgba(0, 0, 0, .35);
}
.esc-copy h3 { font-size: 15px; font-weight: 600; margin: 0 0 4px; }
.esc-copy p { font-size: 13px; line-height: 1.65; color: var(--muted); margin: 0; }

/* ── 快捷键 ───────────────────────────────────────────── */
.keys-panel {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(230, 237, 244, .08);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #111821, #0e141b);
}
.keys-panel + .keys-panel { margin-top: 16px; }
.keys-head {
  display: flex; align-items: center; flex-wrap: wrap; gap: 12px;
  margin-bottom: 16px; padding-bottom: 14px;
  border-bottom: 1px solid rgba(230, 237, 244, .07);
}
.keys-head h3 { font-size: 15.5px; font-weight: 600; margin: 0; }
.keys-tag {
  font-size: 10.5px; color: var(--muted);
  padding: 3px 9px; border-radius: 999px;
  border: 1px solid rgba(230, 237, 244, .1);
  letter-spacing: .06em;
}
.keys-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 26px;
}
.krow {
  display: grid;
  grid-template-columns: minmax(84px, auto) minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 7px 0;
  border-bottom: 1px solid rgba(230, 237, 244, .04);
}
.kbd { display: flex; align-items: center; gap: 4px; white-space: nowrap; }
.kbd i { font-style: normal; color: #7a8b9c; font-size: 10px; }
kbd {
  font-family: var(--mono);
  font-size: 11px; line-height: 1;
  padding: 4px 6px;
  color: #cfe4f5;
  background: #0b1118;
  border: 1px solid #2a3746;
  border-bottom-color: #334455;
  border-radius: 6px;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .35);
}
.kdesc { font-size: 12.6px; line-height: 1.5; color: var(--muted); padding-top: 2px; }

/* ── 下载 ─────────────────────────────────────────────── */
.section-dl { padding-bottom: clamp(32px, 4vw, 52px); }
.dl-panel {
  position: relative;
  overflow: hidden;           /* 装饰光晕（::before inset:-12%）不再越界引发横向滚动 */
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(190px, .55fr);
  gap: clamp(26px, 4vw, 56px);
  align-items: center;
  padding: clamp(30px, 5vw, 64px);
  border: 1px solid rgba(230, 237, 244, .1);
  border-radius: 26px;
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(86, 188, 244, .12), transparent 55%),
    radial-gradient(80% 110% at 92% 100%, rgba(229, 78, 172, .1), transparent 60%),
    #0f151d;
  overflow: hidden;
}
.dl-copy h2 { font-size: var(--h2-panel); line-height: 1.16; margin-bottom: 12px; }
.dl-sub {
  max-width: 54ch;
  font-size: 14.8px; line-height: 1.72;
  color: var(--muted);
  margin: 0 0 26px;
}
.dl-chips {
  display: flex; flex-wrap: wrap; gap: 8px;
  list-style: none; margin: 22px 0 0; padding: 0;
}
.dl-chips li {
  font-size: 11.3px; color: #b9c7d6;
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid rgba(230, 237, 244, .12);
}
.dl-note {
  max-width: 56ch;
  margin: 16px 0 0;
  font-size: 11.8px; line-height: 1.62; color: var(--dim);
}
.dl-alt {
  margin: 8px 0 0; font-size: 12.5px;
}
.dl-alt a { color: #7fd4fb; text-decoration: none; border-bottom: 1px dashed rgba(127,212,251,.5); }
.dl-alt a:hover { color: #a9e6ff; }
.dl-sep { color: #4a6478; margin: 0 8px; }

.dl-steps {
  max-width: 56ch;
  margin: 18px 0 0; padding-left: 20px;
  font-size: 12.6px; line-height: 1.72; color: var(--muted);
}
.dl-steps li { margin-top: 6px; }
.dl-art { position: relative; display: flex; justify-content: center; }
.dl-art img {
  width: min(210px, 72%);
  height: auto;
  filter: drop-shadow(0 24px 60px rgba(86, 188, 244, .18));
}
.dl-art::before {
  content: "";
  position: absolute; inset: -12%;
  background: radial-gradient(closest-side, rgba(86, 188, 244, .22), rgba(229, 78, 172, .08) 55%, transparent 76%);
  filter: blur(28px);
  z-index: 0;
}
.dl-art img { position: relative; z-index: 1; }

/* ── 页脚 ─────────────────────────────────────────────── */
.site-foot {
  border-top: 1px solid var(--line-soft);
  padding: 36px 0 48px;
}
.foot-top {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 22px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(230, 237, 244, .05);
}
.foot-logo { height: 20px; width: auto; opacity: .9; }
.foot-nav { display: flex; flex-wrap: wrap; gap: 22px; }
.foot-nav a { font-size: 12.5px; color: var(--muted); }
.foot-nav a:hover { color: var(--txt); }
.foot-bottom {
  display: flex; flex-wrap: wrap; align-items: center; gap: 16px;
  padding-top: 22px;
  font-size: 12px; color: var(--dim);
}
.foot-bottom p { margin: 0; }
.foot-top-link { margin-left: auto; font-size: 12px; color: var(--muted); }
.foot-top-link:hover { color: var(--txt); }

/* ── 滚动出现 ─────────────────────────────────────────── */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity .7s cubic-bezier(.2, .7, .3, 1),
    transform .7s cubic-bezier(.2, .7, .3, 1);
  transition-delay: calc(var(--i, 0) * 55ms);
}
.js .reveal.in { opacity: 1; transform: none; }

/* ── 英文排版微调 ─────────────────────────────────────── */
html[lang="en"] body { letter-spacing: 0; }
html[lang="en"] .hero-h1 {
  font-size: clamp(38px, 4.15vw, 58px);
  letter-spacing: -.032em;
  max-width: none;
}
html[lang="en"] .sec-head h2,
html[lang="en"] .spot-lead h2,
html[lang="en"] .dl-copy h2 {
  letter-spacing: -.028em;
  text-wrap: balance;
}
html[lang="en"] .eyebrow { letter-spacing: .15em; }
html[lang="en"] .lead { max-width: 54ch; }
html[lang="en"] .step p { max-width: 22ch; }
@media (min-width: 621px) {
  html[lang="en"] .cmp tbody th { width: 30%; font-size: 12.6px; line-height: 1.45; }
  html[lang="en"] .cmp thead th { font-size: 10.5px; letter-spacing: .06em; }
}

/* ── 通用栅格（原内联 grid 收口，便于窄屏折叠）───────────── */
.g2, .g3 { display: grid; gap: 12px; margin-top: 14px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ── 价格与授权 ───────────────────────────────────────── */
.price-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}
.price-card {
  display: flex; flex-direction: column; align-items: center;
  padding: 14px 10px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.price-plan { font-size: 13px; color: var(--muted); line-height: 1.35; text-align: center; }
.price-plan .bi-en { font-size: 11px; margin-top: 1px; }
.price-num {
  font-size: 27px; font-weight: 800; letter-spacing: -.02em;
  color: var(--txt); margin: 6px 0 11px; line-height: 1;
}
.price-card .btn { width: 100%; height: 34px; font-size: 12.5px; padding: 0 10px; border-radius: 9px; }
.price-card .btn .bi-en { display: block; font-size: 10.5px; line-height: 1.1; margin: 1px 0 0; }
.info-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px;
}
.info-card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px;
}
.info-card h3 { margin: 0 0 8px; font-size: 15px; font-weight: 600; }
.info-card p { margin: 0; color: var(--muted); font-size: 13.5px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .steps { grid-template-columns: 1fr; }
  .step {
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr);
    column-gap: 14px;
    padding: 14px 0;
    border-top: 1px solid rgba(230, 237, 244, .06);
  }
  .step:first-child { border-top: 0; padding-top: 0; }
  .step::after { display: none; }
  .step-num { grid-row: 1 / span 2; }
  .step h3 { grid-column: 2; margin: 2px 0 0; }
  .step p { grid-column: 2; margin-top: 4px; }
  .keys-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 24px;
    border-left: 0;
    border-top: 1px solid var(--line-soft);
    padding: 18px 0 0;
  }
  .fact { border-bottom: 0; padding: 8px 0; }
  .fact:first-child { padding-top: 8px; }
  .spot { grid-template-columns: 1fr; }
  .spot-note { grid-column: auto; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav { gap: 20px; }
}

@media (max-width: 860px) {
  .nav { display: none; }
  .price-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .g2, .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* 834 起对比表开始压缩：首列定宽 168px，表体在容器内横向滚动 */
  .cmp thead th:first-child,
  .cmp tbody th {
    width: 168px;
    min-width: 168px;
    max-width: 168px;
    padding-left: 14px;
    padding-right: 10px;
    font-size: 12.5px;
    line-height: 1.45;
  }
  .cmp thead th { font-size: 10.5px; padding: 14px 10px; }
  .cmp th, .cmp td { padding: 12px 10px; }
  .table-hint { display: block; margin: 10px 0 0; font-size: 11.5px; color: var(--dim); }
  .lang { margin-left: auto; }
  .modules { grid-template-columns: 1fr; }
  .legs { grid-template-columns: 1fr; }
  .leg {
    border-left: 0;
    border-top: 1px solid var(--line-soft);
    padding: 22px 0;
  }
  .leg:first-child { border-top: 0; padding-top: 0; }
  .leg:last-child { padding-bottom: clamp(26px, 3.4vw, 40px); }
  .pains { border-top: 1px solid var(--line); }
  .pain {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 10px 14px;
  }
  .p-solve {
    grid-column: 2;
    border-left: 0;
    border-top: 1px solid rgba(230, 237, 244, .07);
    padding: 12px 0 0;
    margin-top: 2px;
  }
  .dl-panel { grid-template-columns: 1fr; }
  .dl-art { order: -1; }
  .dl-art img { width: 130px; }
}

@media (max-width: 620px) {
  :root {
    --gutter: 20px;
    /* 窄屏收敛：主标题约 1.4×（原 27px → 37px@390），避免破版 */
    --h2: clamp(34px, 9.6vw, 44px);
    --h2-panel: clamp(30px, 8.4vw, 36px);
    --h2-minor: clamp(30px, 8.6vw, 34px);
    --eyebrow: 14px;
  }
  .head-in { height: 64px; gap: 16px; }
  .brand { gap: 9px; }
  .brand img { height: 36px; }
  .brand-cn { font-size: 15.5px; }
  .hero { padding-top: 44px; }
  .hero-h1 { font-size: clamp(34px, 9.4vw, 44px); }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact:nth-child(3) { padding-top: 8px; }
  .shot-cap { flex-direction: column; gap: 4px; }
  .shot-cap-r { display: none; }
  .stats { grid-template-columns: 1fr; gap: 26px; }
  .keys-grid { grid-template-columns: 1fr; }
  .krow { grid-template-columns: minmax(96px, auto) minmax(0, 1fr); }
  .sec-head h2, .spot-lead h2, .dl-copy h2 { letter-spacing: -.012em; }
  /* 窄屏改用均衡断行，避免「串成一条线只有这一个窗 / 口」这类单字孤行 */
  .sec-head h2, .spot-lead h2, .dl-copy h2,
  .section > .wrap > h2, .hero-h1 span { text-wrap: balance; }
  .table-hint {
    display: block;
    margin: 10px 0 0;
    font-size: 11.5px;
    color: var(--dim);
  }
  .cmp { min-width: 860px; }
  .foot-top { align-items: flex-start; }
  .foot-nav { gap: 14px 18px; }
  .foot-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
  .foot-top-link { margin-left: 0; }
  .tagline > span:last-child { text-wrap: balance; }
  .dl-panel { padding: 26px 22px; }
  .price-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .g2, .g3 { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .dl-chips { gap: 6px; }
  .dl-chips li { padding: 4px 9px; }
  .esc-band { flex-direction: column; align-items: flex-start; gap: 14px; }
  .pipe-foot { display: grid; gap: 4px; }
  .pipe-foot .sep { display: none; }
  .pipe-foot span { display: block; }
  .pipe-foot span::before { content: "· "; color: #5b6b7c; }
  .keys-h span { display: block; }
  html[lang="en"] .keys-h span + span { margin-left: 0; }
  html[lang="en"] .hero-h1 {
    font-size: clamp(30px, 8vw, 36px);
    max-width: none;
  }
  html[lang="en"] .sec-head h2,
  html[lang="en"] .spot-lead h2,
  html[lang="en"] .dl-copy h2,
  html[lang="en"] .section > .wrap > h2 { font-size: clamp(26px, 7.2vw, 34px); line-height: 1.22; }
  html[lang="en"] .eyebrow { font-size: 13px; letter-spacing: .14em; }
}

@media (max-width: 480px) {
  .hero .cta, .dl-panel .cta { width: 100%; }
  .hero .cta .btn, .dl-panel .cta .btn { width: 100%; }
  .btn-lg { height: 52px; }
  .stat-num { font-size: 34px; }
  .pipe-badge { font-size: 9.5px; letter-spacing: .12em; }
}

/* ── 减少动效 ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* 对照模式：英文副行 */
.bi-en{display:block;font-size:max(.82em, 11px);line-height:1.5;color:#93a5b6;margin-top:3px;font-weight:400}
button .bi-en,a .bi-en{display:inline;margin-left:.4em}
/* 2026-10-28 打磨：
   ① 展示级标题的英文副行改用绝对小比例，避免 0.82em×84px＝69px 抢过中文主行；
   ② 眉标的英文副行不再全大写，与中文并列而不是重复成「03 · 核心模块 / 03 · MODULES」；
   ③ 按钮内的英文副行跟随父色，保证渐变底上的可读性；
   ④ 胶囊内的英文副行回到行内，避免把单行标签撑成两行、使同一排胶囊高矮不齐。 */
.sec-head h2 .bi-en, .spot-lead h2 .bi-en, .dl-copy h2 .bi-en,
.section > .wrap > h2 .bi-en {
  font-size: .42em; line-height: 1.42; letter-spacing: -.005em;
  margin-top: .16em; font-weight: 500;
}
.hero-h1 .bi-en { font-size: .68em; line-height: 1.3; margin-top: .1em; }
.eyebrow .bi-en, .spot-lead .eyebrow .bi-en {
  font-size: .78em; line-height: 1.4; letter-spacing: .05em;
  text-transform: none; margin-top: 2px;
}
.btn .bi-en { color: inherit; opacity: .8; font-weight: 500; font-size: .84em; }
/* 首屏/下载两处大按钮：中文主行 + 英文副行上下排，避免一行里中英挤在一起 */
.cta .btn, .dl-panel .btn { height: auto; min-height: 48px; padding: 9px 22px; }
.cta .btn .bi-en, .dl-panel .btn .bi-en { display: block; margin: 1px 0 0; font-size: 11.5px; line-height: 1.3; }
.dl-panel .btn .bi-en { font-size: 11px; }
.chips li .bi-en, .dl-chips li .bi-en {
  display: inline; margin: 0 0 0 .35em; font-size: 11px; opacity: .78;
}
/* 导航保持单行可扫读：对照模式只留中文主行（英文由英文模式提供），
   否则 7 个「中文+英文」标签在 1180 内容宽下必然溢出顶栏。 */
.nav .bi-en { display: none; }