/* ================================================================
   FireStone 聊单助手 · 登录前站点
   版式结构参考：singoosh.com（星谷云）
   品牌配色：靛蓝 #3567fa + 紫 #7c3aed（深底 #0d1b2f）
   零外部依赖：仅系统字体 + 内联 SVG，兼容严格 CSP
   ================================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* ---- 品牌色：靛蓝 + 紫 ---- */
  --brand: #3567fa;
  --brand-2: #7c3aed;
  --brand-3: #5b9bff;
  --brand-soft: rgba(53, 103, 250, .10);
  --brand-line: rgba(53, 103, 250, .22);
  /* ★ 浅色底（brand-soft）上的品牌色文字：--brand 只有 4.16:1，加深版 4.9:1 */
  --brand-ink: #2a52d8;
  --ink: #0d1b2f;
  --ink-2: #131f38;
  --ink-3: #1b2740;
  --glow-a: rgba(53, 103, 250, .55);
  --glow-b: rgba(124, 58, 237, .40);
  --glow-c: rgba(24, 93, 230, .45);

  /* ---- 中性色 ---- */
  --paper: #ffffff;
  --paper-2: #f6f8fc;
  --paper-3: #eef2f9;
  --line: rgba(13, 27, 47, .10);
  --line-2: rgba(13, 27, 47, .06);
  --text: #16233b;
  --text-2: #5a6880;
  /* ★ 可读性：原 #8b97ab 对白底仅 2.88:1（"看不清"），下调明度后 4.90:1；色相/饱和度不变 */
  --text-3: #627384;
  --on-ink: #eef3fb;
  --on-ink-2: rgba(238, 243, 251, .66);
  /* ★ 可读性：原 .44 对深底仅 3.98:1，提到 .62 → 6.6:1 */
  --on-ink-3: rgba(238, 243, 251, .62);

  /* ★ 可读性：原 #1ca355 作文字对白底仅 3.27:1 → 5.02:1 */
  --green: #15803d;
  /* ★ 可读性：原 #e8811b 作文字对白底仅 2.77:1 → 5.02:1 */
  --amber: #b45309;
  --blue: #2a6dbf;

  /* ---- 形状与动效 ---- */
  --r-sm: 10px;
  --r: 14px;
  --r-lg: 18px;
  --r-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(20, 16, 14, .04);
  --shadow: 0 2px 4px rgba(20, 16, 14, .04), 0 12px 32px rgba(20, 16, 14, .07);
  --shadow-lg: 0 8px 20px rgba(20, 16, 14, .08), 0 32px 64px rgba(20, 16, 14, .12);
  --ease: cubic-bezier(.22, .61, .36, 1);

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;

  --nav-h: 68px;
  --wrap: 1200px;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.narrow { max-width: 820px; }

/* ================================================================
   顶部导航
   ================================================================ */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: background .3s var(--ease), border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.site-nav .wrap { display: flex; align-items: center; gap: 28px; }

.nav-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(140deg, var(--brand) 0%, var(--brand-2) 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(53, 103, 250, .32);
}
.nav-logo-mark svg { width: 18px; height: 18px; stroke: #fff; }
.nav-logo-mark img { height: 23px; width: auto; display: block; }
.nav-logo-txt { line-height: 1.15; }
.nav-logo-txt > span { display: block; }
.nav-logo-name { font-size: 15px; font-weight: 700; letter-spacing: -.2px; }
.nav-logo-sub { font-size: 10.5px; letter-spacing: .12em; opacity: .62; }

.nav-links { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-link {
  position: relative; padding: 8px 14px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: var(--text-2);
  transition: color .18s, background .18s;
}
.nav-link:hover { color: var(--text); background: rgba(127, 127, 127, .09); }
.nav-link.on { color: var(--text); font-weight: 650; }
.nav-link.on::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--brand);
}
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* 深色 Hero 上的导航文字
   ★不要在这里覆盖 --brand：logo 底块与主按钮的渐变都取 --brand，
     一旦改成白色，底块会变成「白→紫」，白色字形和按钮白字都会糊掉 */
.site-nav.on-ink { --text: #fff; --text-2: rgba(255, 255, 255, .74); }
.site-nav.on-ink .nav-link:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.site-nav.on-ink .nav-link.on::after { background: #fff; }
.site-nav.on-ink .nav-logo-name { color: #fff; }
.site-nav.on-ink .nav-logo-sub { color: rgba(255, 255, 255, .74); }   /* ★ 可读性：原 .55 对深底 ~2.9:1 */
.site-nav.on-ink .btn-ghost {
  color: #fff; background: rgba(255, 255, 255, .08);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .26);
}
.site-nav.on-ink .btn-ghost:hover { background: rgba(255, 255, 255, .16); color: #fff; }
.site-nav.stuck {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(20, 16, 14, .02), 0 6px 24px rgba(20, 16, 14, .05);
}
.site-nav.stuck.on-ink { --text: var(--text); --text-2: var(--text-2); }
.site-nav.stuck.on-ink .nav-link.on::after { background: var(--brand); }
.site-nav.stuck.on-ink .btn-ghost { color: var(--text); background: rgba(255, 255, 255, .6); box-shadow: inset 0 0 0 1px var(--line); }
.site-nav.stuck.on-ink .nav-logo-name { color: var(--text); }
.site-nav.stuck.on-ink .nav-logo-sub { color: var(--text-3); }

.nav-toggle { display: none; width: 38px; height: 38px; border-radius: 9px; align-items: center; justify-content: center; }
.nav-toggle span { display: block; width: 17px; height: 1.6px; background: currentColor; border-radius: 2px; position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 17px; height: 1.6px; background: currentColor; border-radius: 2px;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.nav-drawer {
  position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 190;
  background: var(--paper); border-bottom: 1px solid var(--line);
  padding: 12px 28px 22px; display: none;
  box-shadow: 0 20px 40px rgba(20, 16, 14, .10);
}
.nav-drawer.open { display: block; animation: dropIn .22s var(--ease); }
@keyframes dropIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.nav-drawer a { display: block; padding: 12px 4px; font-size: 15px; border-bottom: 1px solid var(--line-2); }
.nav-drawer .btn { width: 100%; margin-top: 14px; }

/* ================================================================
   按钮
   ================================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 40px; padding: 0 18px; border-radius: 10px;
  font-size: 14px; font-weight: 600; white-space: nowrap;
  transition: transform .16s var(--ease), box-shadow .2s, background .2s, color .2s, border-color .2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(140deg, var(--brand) 0%, var(--brand-2) 100%);
  color: #fff; box-shadow: 0 2px 10px rgba(53, 103, 250, .28);
}
.btn-primary:hover { box-shadow: 0 6px 22px rgba(53, 103, 250, .36); transform: translateY(-1px); }
.btn-ghost { box-shadow: inset 0 0 0 1px var(--line); color: var(--text); background: rgba(255, 255, 255, .6); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1px var(--brand-line); color: var(--brand); background: var(--paper); }
.btn-ink { background: var(--ink); color: var(--on-ink); }
.btn-ink:hover { background: var(--ink-3); }
.btn-glass { background: rgba(255, 255, 255, .10); color: #fff; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22); backdrop-filter: blur(6px); }
.btn-glass:hover { background: rgba(255, 255, 255, .18); }
/* ══════════════════════════════════════════════════════════════
   ★★ 可读性（2026-09-23）：`.btn-glass` 是**给深底做的**玻璃按钮
   （白字 + 10% 白底 + 22% 白描边）。它被复用到两个**浅色**容器里，
   结果白字叠浅底 —— 实测对比度 **1.00（等于完全看不见，连按钮边框也没有）**：
     · `.ent-note`（首页/价格页的「企业版说明」卡，brand-soft 浅紫渐变）
     · `.r-cta`（案例分析页底部 CTA，浅灰 #f4f4fc）
   这两处改成浅底口径：白玻璃底 + 品牌深色文字（对 #fbfbfe 约 7.0:1）。
   ★ 注意：**只作用域覆盖**，不动基础规则 —— 另外 6 处 `.btn-glass` 在深底上
     （header.hero / .cta，实测 9.52:1），整体改会把它们弄坏。
   ══════════════════════════════════════════════════════════════ */
.ent-note .btn-glass,
.r-cta .btn-glass {
  background: rgba(255, 255, 255, .78);
  color: var(--brand-ink);
  box-shadow: inset 0 0 0 1px var(--brand-line), 0 1px 3px rgba(22, 35, 59, .06);
}
.ent-note .btn-glass:hover,
.r-cta .btn-glass:hover { background: #fff; color: var(--brand-ink); }
.btn-lg { height: 48px; padding: 0 26px; font-size: 15px; border-radius: 12px; }
.btn-sm { height: 34px; padding: 0 14px; font-size: 13px; border-radius: 9px; }
.btn-block { width: 100%; }
.btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

/* ================================================================
   通用区块
   ================================================================ */
.sec { padding: 104px 0; position: relative; }
.sec.tight { padding: 72px 0; }
.sec.paper2 { background: var(--paper-2); }
.sec.paper3 { background: var(--paper-3); }
.sec.ink { background: var(--ink); color: var(--on-ink); }
.sec.ink .sec-sub { color: var(--on-ink-2); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 650; letter-spacing: .10em;
  color: var(--brand); margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 22px; height: 1.5px; background: currentColor; border-radius: 2px; }
.sec.ink .eyebrow { color: var(--brand-3); }
/* ★ 可读性：深色 hero 内的 eyebrow 原来继承了品牌蓝 --brand（#3567fa 对深底 2.95~3.63:1，偏暗） */
header.hero .eyebrow, .hero .eyebrow { color: var(--brand-3); }

.sec-head { max-width: 760px; }
.sec-head.center { margin: 0 auto; text-align: center; }
.sec-head.center .eyebrow { justify-content: center; }
h2.sec-title {
  font-size: clamp(26px, 3.4vw, 40px); font-weight: 700;
  line-height: 1.22; letter-spacing: -.9px; margin-bottom: 16px;
}
.sec-title em { font-style: normal; color: var(--brand); }
.sec.ink .sec-title em { color: var(--brand-3); }
.sec-sub { font-size: 16px; color: var(--text-2); line-height: 1.75; max-width: 700px; }
.sec-head.center .sec-sub { margin: 0 auto; }

.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 26px; transition: transform .28s var(--ease), box-shadow .28s, border-color .28s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--brand-line); }
.card h3 { font-size: 17px; font-weight: 650; letter-spacing: -.3px; margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--text-2); line-height: 1.7; }
.card .ico {
  width: 42px; height: 42px; border-radius: 11px; margin-bottom: 16px;
  background: var(--brand-soft); color: var(--brand);
  display: flex; align-items: center; justify-content: center;
}
.card .ico svg { width: 21px; height: 21px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* 编号卡（参考站的 01/02/03 语言） */
.numcard { position: relative; overflow: hidden; }
.numcard .num {
  position: absolute; top: 12px; right: 20px;
  font-size: 54px; font-weight: 800; letter-spacing: -2px;
  color: var(--text); opacity: .07; line-height: 1;
}
.numcard .taglist { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.taglist span {
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
  background: var(--brand-soft); color: var(--brand-ink); font-weight: 550;
}

/* ================================================================
   首屏 Hero
   ================================================================ */
.hero {
  position: relative; background: var(--ink); color: var(--on-ink);
  padding: calc(var(--nav-h) + 84px) 0 0; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(720px 420px at 82% 6%, var(--glow-a), transparent 62%),
    radial-gradient(640px 520px at 96% 62%, var(--glow-b), transparent 66%),
    radial-gradient(900px 600px at 8% 96%, var(--glow-c), transparent 70%);
  opacity: .58; pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(80% 70% at 50% 30%, #000 20%, transparent 78%);
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 20%, transparent 78%);
}
.hero .wrap { position: relative; z-index: 2; }

.hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 52px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  height: 34px; padding: 0 15px; border-radius: 999px;
  background: rgba(255, 255, 255, .07); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14);
  font-size: 12.5px; font-weight: 550; color: var(--on-ink-2); margin-bottom: 26px;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand-3); box-shadow: 0 0 0 4px rgba(240, 162, 79, .18); }

h1.hero-title {
  font-size: clamp(28px, 4.4vw, 56px); font-weight: 750;
  line-height: 1.16; letter-spacing: -1.6px; margin-bottom: 24px;
}
.hero-title .hl { white-space: nowrap; }
h1.hero-title .hl {
  background: linear-gradient(100deg, var(--brand-3) 0%, var(--brand-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 17px; line-height: 1.8; color: var(--on-ink-2); max-width: 540px; margin-bottom: 34px; }
.hero-sub b { color: var(--on-ink); font-weight: 600; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.hero-note { display: flex; flex-wrap: wrap; gap: 20px; font-size: 12.5px; color: var(--on-ink-3); }
.hero-note span { display: flex; align-items: center; gap: 6px; }
.hero-note svg { width: 14px; height: 14px; stroke: var(--brand-3); fill: none; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }

/* Hero 右侧：产品界面示意 */
.shot {
  position: relative; border-radius: var(--r-xl); overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, .13), rgba(255, 255, 255, .05));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .16), 0 40px 90px rgba(0, 0, 0, .45);
  padding: 1px;
}
.shot-in { background: #101a2e; border-radius: calc(var(--r-xl) - 1px); overflow: hidden; }
.shot-bar {
  display: flex; align-items: center; gap: 7px; padding: 11px 14px;
  background: rgba(255, 255, 255, .05); border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.shot-bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .18); }
.shot-bar i:first-child { background: rgba(255, 120, 90, .75); }
.shot-bar i:nth-child(2) { background: rgba(240, 190, 80, .7); }
.shot-bar i:nth-child(3) { background: rgba(90, 200, 130, .7); }
.shot-bar span { margin-left: 8px; font-size: 11.5px; color: rgba(255, 255, 255, .68); font-family: var(--mono); }   /* ★ 原 .42 对深底约 2.5:1 */
.shot-body { display: grid; grid-template-columns: 96px 1fr; min-height: 300px; }
.shot-side { padding: 12px 10px; border-right: 1px solid rgba(255, 255, 255, .08); display: flex; flex-direction: column; gap: 8px; }
.shot-side span { height: 7px; border-radius: 4px; background: rgba(255, 255, 255, .11); }
.shot-side span:nth-child(1) { width: 70%; background: rgba(255, 255, 255, .26); }
.shot-side span:nth-child(4) { width: 84%; }
.shot-side span:nth-child(6) { width: 58%; }
.shot-chat { padding: 14px; display: flex; flex-direction: column; gap: 9px; }
.bub { max-width: 82%; padding: 8px 11px; border-radius: 12px; font-size: 12px; line-height: 1.55; }
.bub.in { background: rgba(255, 255, 255, .09); color: rgba(255, 255, 255, .82); border-bottom-left-radius: 4px; }
.bub.out { align-self: flex-end; background: rgba(37, 211, 102, .14); color: rgba(255, 255, 255, .9); border-bottom-right-radius: 4px; box-shadow: inset 0 0 0 1px rgba(37, 211, 102, .3); }
.bub .tr { display: block; margin-top: 4px; padding-top: 4px; border-top: 1px dashed rgba(255, 255, 255, .16); font-size: 11px; color: var(--brand-3); }
.shot-ai {
  margin: 4px 14px 14px; padding: 12px; border-radius: 12px;
  background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12);
}
.shot-ai-h { display: flex; align-items: center; gap: 7px; font-size: 11.5px; font-weight: 650; color: var(--brand-3); margin-bottom: 9px; }
.shot-ai-h svg { width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 2; }
.shot-ai-row { display: flex; align-items: center; justify-content: space-between; font-size: 11.5px; color: rgba(255, 255, 255, .62); padding: 3px 0; }
.shot-ai-row b { color: #fff; font-weight: 600; }
.shot-ai-bar { height: 5px; border-radius: 4px; background: rgba(255, 255, 255, .12); overflow: hidden; margin: 7px 0 10px; }
.shot-ai-bar i { display: block; height: 100%; width: 82%; border-radius: 4px; background: linear-gradient(90deg, var(--brand), var(--brand-3)); }

.scroll-hint {
  display: flex; align-items: center; gap: 10px; margin-top: 56px; padding-bottom: 40px;
  font-size: 11.5px; letter-spacing: .18em; color: var(--on-ink-3); font-weight: 600;
}
.scroll-hint::after {
  content: ""; width: 42px; height: 1px; background: currentColor;
  animation: pulseline 1.9s var(--ease) infinite;
}
@keyframes pulseline { 0%, 100% { opacity: .3; transform: scaleX(.6); transform-origin: left; } 50% { opacity: 1; transform: scaleX(1); } }

/* ================================================================
   数据带 / 关键字滚动
   ================================================================ */
.statband { border-top: 1px solid rgba(255, 255, 255, .10); background: rgba(0, 0, 0, .18); position: relative; z-index: 2; }
.statband .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-cell { padding: 30px 26px; border-left: 1px solid rgba(255, 255, 255, .08); }
.stat-cell:first-child { border-left: none; padding-left: 0; }
.stat-num { font-size: 32px; font-weight: 750; letter-spacing: -1.2px; line-height: 1.1; }
.stat-num small { font-size: 15px; font-weight: 600; margin-left: 2px; color: var(--brand-3); }
.stat-cap { font-size: 12.5px; color: var(--on-ink-3); margin-top: 6px; }

.marquee { overflow: hidden; padding: 22px 0; border-bottom: 1px solid var(--line-2); background: var(--paper); }
.marquee-in { display: flex; gap: 44px; width: max-content; animation: slide 34s linear infinite; }
.marquee-in span {
  font-size: 14px; font-weight: 600; color: var(--text-3); letter-spacing: .04em;
  display: flex; align-items: center; gap: 44px; white-space: nowrap;
}
.marquee-in span::after { content: "◆"; font-size: 8px; color: var(--brand); opacity: .5; }
@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ================================================================
   流程步骤
   ================================================================ */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-top: 52px; }
.flow-step { position: relative; padding-top: 22px; }
.flow-step::before {
  content: ""; position: absolute; top: 7px; left: 0; right: 0; height: 1.5px;
  background: linear-gradient(90deg, var(--brand-line), var(--line));
}
.flow-step::after {
  content: ""; position: absolute; top: 3px; left: 0;
  width: 9px; height: 9px; border-radius: 50%; background: var(--brand);
  box-shadow: 0 0 0 4px var(--brand-soft);
}
.flow-idx { font-size: 11.5px; font-weight: 700; color: var(--brand); font-family: var(--mono); }
.flow-step h4 { font-size: 15px; font-weight: 650; margin: 6px 0 6px; letter-spacing: -.2px; }
.flow-step p { font-size: 12.5px; color: var(--text-2); line-height: 1.65; }

/* ================================================================
   三支柱（接得住 / 谈得准 / 跟得住）
   ================================================================ */
.pillar {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 30px 28px; position: relative; overflow: hidden;
}
.pillar::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--brand-3));
  opacity: 0; transition: opacity .3s;
}
.pillar:hover::after { opacity: 1; }
.pillar-idx { font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--brand); letter-spacing: .1em; }
.pillar h3 { font-size: 22px; font-weight: 700; letter-spacing: -.6px; margin: 10px 0 4px; }
.pillar h3 small { font-size: 13px; font-weight: 600; color: var(--text-3); letter-spacing: .1em; margin-left: 8px; }
.pillar > p { font-size: 14.5px; color: var(--text-2); line-height: 1.75; margin-bottom: 18px; }
.checklist { display: flex; flex-direction: column; gap: 9px; padding-top: 18px; border-top: 1px solid var(--line-2); }
.checklist li { display: flex; gap: 9px; font-size: 13.5px; color: var(--text-2); }
.checklist svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 3px; stroke: var(--brand); fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }

/* ================================================================
   架构图（暗色）
   ================================================================ */
.arch { margin-top: 56px; border-radius: var(--r-xl); overflow: hidden; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12); }
.arch-row {
  display: grid; grid-template-columns: 190px 1fr; gap: 24px; align-items: center;
  padding: 22px 26px; border-top: 1px solid rgba(255, 255, 255, .09);
  background: rgba(255, 255, 255, .028);
}
.arch-row:first-child { border-top: none; }
.arch-tag { display: flex; align-items: center; gap: 12px; }
.arch-tag b {
  font-family: var(--mono); font-size: 11px; font-weight: 700; color: var(--ink);
  background: var(--brand-3); width: 26px; height: 26px; border-radius: 7px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.arch-tag span { font-size: 13px; font-weight: 650; }
.arch-tag i { font-size: 11px; color: var(--on-ink-3); font-style: normal; display: block; }
.arch-items { display: flex; flex-wrap: wrap; gap: 8px; }
.arch-items span {
  font-size: 12.5px; padding: 7px 13px; border-radius: 9px; color: var(--on-ink-2);
  background: rgba(255, 255, 255, .06); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .10);
}
.arch-items span.key { background: linear-gradient(140deg, var(--brand), var(--brand-2)); color: #fff; font-weight: 600; box-shadow: none; }
.arch-foot {
  display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center;
  padding: 18px 26px; background: rgba(0, 0, 0, .26); border-top: 1px solid rgba(255, 255, 255, .09);
  font-size: 12.5px; color: var(--on-ink-3);
}
.arch-foot b { color: var(--brand-3); font-weight: 600; }

/* ================================================================
   FAQ
   ================================================================ */
.faq { margin-top: 44px; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; align-items: center; gap: 16px; text-align: left;
  padding: 22px 4px; font-size: 16px; font-weight: 600; letter-spacing: -.2px;
}
.faq-q .sign {
  margin-left: auto; flex-shrink: 0; width: 22px; height: 22px; position: relative;
  border-radius: 50%; background: var(--brand-soft);
}
.faq-q .sign::before, .faq-q .sign::after {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: var(--brand); border-radius: 2px; transition: transform .25s var(--ease);
}
.faq-q .sign::before { width: 10px; height: 1.6px; }
.faq-q .sign::after { width: 1.6px; height: 10px; }
.faq-item.open .faq-q .sign::after { transform: translate(-50%, -50%) scaleY(0); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .32s var(--ease); }
.faq-item.open .faq-a { max-height: 420px; }
.faq-a p { font-size: 14.5px; color: var(--text-2); line-height: 1.8; padding: 0 40px 24px 4px; }

/* ================================================================
   CTA 区块
   ================================================================ */
.cta {
  position: relative; overflow: hidden; border-radius: var(--r-xl);
  background: var(--ink); color: var(--on-ink); padding: 58px 56px;
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(560px 360px at 88% 12%, var(--glow-a), transparent 64%),
    radial-gradient(520px 380px at 4% 96%, var(--glow-c), transparent 66%);
  opacity: .62;
}
.cta > * { position: relative; z-index: 2; }
.cta h2 { font-size: clamp(24px, 3vw, 36px); font-weight: 730; letter-spacing: -.9px; line-height: 1.34; margin-bottom: 14px; }
.cta p { font-size: 15.5px; color: var(--on-ink-2); max-width: 620px; margin-bottom: 28px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ================================================================
   页脚
   ================================================================ */
.site-foot { background: var(--ink); color: var(--on-ink); padding: 64px 0 30px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; padding-bottom: 40px; }
.foot-brand p { font-size: 13.5px; color: var(--on-ink-3); line-height: 1.8; margin-top: 14px; max-width: 300px; }
/* ★ 可读性：页脚 logo 副标题原为 rgba(238,243,251,.44)×opacity(.62) → 对深底仅 2.63:1 */
.foot-brand .nav-logo-sub { color: rgba(238, 243, 251, .82); opacity: 1; }
.foot-col h5 { font-size: 12.5px; font-weight: 700; letter-spacing: .1em; color: var(--on-ink-3); margin-bottom: 16px; }
.foot-col a { display: block; font-size: 13.5px; color: var(--on-ink-2); padding: 5px 0; transition: color .18s; }
.foot-col a:hover { color: #fff; }
.foot-bottom {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .10);
  font-size: 12px; color: var(--on-ink-3);
}
.foot-bottom .tags { display: flex; gap: 14px; flex-wrap: wrap; }
.foot-bottom .tags span { display: flex; align-items: center; gap: 6px; }
.foot-bottom .tdot { width: 5px; height: 5px; border-radius: 50%; background: var(--brand-3); }

/* ================================================================
   价格页
   ================================================================ */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 48px; align-items: start; }
.price-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: 32px 28px; position: relative; transition: transform .28s var(--ease), box-shadow .28s;
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.price-card.hot { border-color: var(--brand-line); box-shadow: var(--shadow); }
.price-card.hot::before {
  content: "最受欢迎"; position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  font-size: 11.5px; font-weight: 650; color: #fff; padding: 4px 14px; border-radius: 999px;
  background: linear-gradient(140deg, var(--brand), var(--brand-2)); white-space: nowrap;
}
.price-name { font-size: 15px; font-weight: 700; letter-spacing: .02em; }
.price-desc { font-size: 13px; color: var(--text-3); margin-top: 6px; min-height: 40px; }
.price-amt { display: flex; align-items: baseline; gap: 6px; margin: 20px 0 4px; }
.price-amt b { font-size: 40px; font-weight: 750; letter-spacing: -1.6px; line-height: 1; }
.price-amt span { font-size: 13px; color: var(--text-3); }
.price-note { font-size: 12px; color: var(--text-3); }
.price-card .btn { margin: 22px 0 4px; }
.price-list { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--line-2); }
.price-list li { display: flex; gap: 9px; font-size: 13.5px; color: var(--text-2); }
.price-list svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 3px; stroke: var(--brand); fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.price-list li.mute { color: var(--text-3); }
.price-list li.mute svg { stroke: var(--text-3); }

.cmp-wrap { margin-top: 40px; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; background: var(--paper); }
.cmp { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.cmp th, .cmp td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line-2); }
.cmp thead th { background: var(--paper-2); font-weight: 650; font-size: 13px; }
.cmp thead th:first-child { width: 34%; }
.cmp td.c, .cmp th.c { text-align: center; }
.cmp tbody tr:last-child td { border-bottom: none; }
.cmp tbody tr:hover { background: var(--paper-2); }
.cmp .yes { color: var(--brand); font-weight: 700; }
.cmp .no { color: var(--text-3); }
.cmp .grp td { background: var(--paper-3); font-weight: 650; font-size: 12.5px; letter-spacing: .04em; color: var(--text-2); }

/* ================================================================
   功能页
   ================================================================ */
.anchor-bar {
  position: sticky; top: var(--nav-h); z-index: 120;
  background: rgba(255, 255, 255, .88); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line); padding: 12px 0;
}
.anchor-bar .wrap { display: flex; gap: 8px; flex-wrap: wrap; }
.anchor-bar a {
  font-size: 13px; padding: 7px 14px; border-radius: 999px; color: var(--text-2);
  box-shadow: inset 0 0 0 1px var(--line); transition: all .18s;
}
.anchor-bar a:hover, .anchor-bar a.on { color: #fff; background: var(--ink); box-shadow: none; }

.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  padding: 62px 0; border-bottom: 1px solid var(--line-2);
}
.feature-row:last-child { border-bottom: none; }
.feature-row.flip .f-copy { order: 2; }
.f-copy .f-idx { font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--brand); letter-spacing: .1em; }
.f-copy h3 { font-size: clamp(22px, 2.4vw, 30px); font-weight: 700; letter-spacing: -.7px; margin: 10px 0 14px; line-height: 1.28; }
.f-copy p { font-size: 15px; color: var(--text-2); line-height: 1.8; margin-bottom: 20px; }
.f-copy ul { display: flex; flex-direction: column; gap: 10px; }
.f-copy ul li { display: flex; gap: 10px; font-size: 14px; color: var(--text-2); }
.f-copy ul svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 3px; stroke: var(--brand); fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.f-visual {
  border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--paper-2);
  padding: 22px; min-height: 240px;
}
.f-visual.ink { background: var(--ink); border-color: transparent; color: var(--on-ink); }

/* 迷你界面示意图（纯 CSS，无图片依赖） */
.mini { background: var(--paper); border-radius: var(--r); border: 1px solid var(--line); overflow: hidden; }
.mini-h { display: flex; align-items: center; gap: 8px; padding: 10px 13px; border-bottom: 1px solid var(--line-2); font-size: 11.5px; font-weight: 650; color: var(--text-3); }
.mini-h i { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); opacity: .5; }
.mini-b { padding: 14px; display: flex; flex-direction: column; gap: 9px; }
.mini-line { height: 8px; border-radius: 5px; background: var(--paper-3); }
.mini-kpi { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.mini-kpi div { background: var(--paper-2); border: 1px solid var(--line-2); border-radius: 9px; padding: 10px; }
.mini-kpi b { display: block; font-size: 17px; font-weight: 720; letter-spacing: -.5px; }
.mini-kpi span { font-size: 10.5px; color: var(--text-3); }
.mini-chart { height: 74px; display: flex; align-items: flex-end; gap: 5px; padding-top: 6px; }
.mini-chart i { flex: 1; border-radius: 4px 4px 0 0; background: linear-gradient(180deg, var(--brand-2), var(--brand-soft)); }

/* ================================================================
   解决方案页
   ================================================================ */
.who-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px 28px; }
.who-card .role { font-size: 12px; font-weight: 650; letter-spacing: .1em; color: var(--brand); }
.who-card h3 { font-size: 21px; font-weight: 700; letter-spacing: -.5px; margin: 10px 0 12px; }
.who-card > p { font-size: 14.5px; color: var(--text-2); line-height: 1.78; }
.who-card .pains { margin: 20px 0; padding: 16px 18px; border-radius: var(--r); background: var(--paper-2); }
.who-card .pains h6 { font-size: 12px; font-weight: 700; letter-spacing: .08em; color: var(--text-3); margin-bottom: 10px; }
.who-card .pains li { font-size: 13.5px; color: var(--text-2); padding: 4px 0 4px 16px; position: relative; }
.who-card .pains li::before { content: ""; position: absolute; left: 0; top: 12px; width: 6px; height: 1.5px; background: var(--text-3); }
.who-card .gain { display: flex; flex-direction: column; gap: 9px; }
.who-card .gain li { display: flex; gap: 9px; font-size: 13.5px; color: var(--text); }
.who-card .gain svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 3px; stroke: var(--brand); fill: none; stroke-width: 2.6; }

.scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 44px; }
.scene { display: flex; gap: 18px; padding: 26px; border-radius: var(--r-lg); background: var(--paper); border: 1px solid var(--line); }
.scene .ico { width: 40px; height: 40px; border-radius: 11px; background: var(--brand-soft); color: var(--brand); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.scene .ico svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.scene h4 { font-size: 16.5px; font-weight: 650; margin-bottom: 8px; }
.scene p { font-size: 13.5px; color: var(--text-2); line-height: 1.72; margin-bottom: 12px; }
.scene .taglist { display: flex; flex-wrap: wrap; gap: 6px; }
.scene .taglist span { font-size: 11.5px; padding: 3px 9px; border-radius: 999px; background: var(--paper-3); color: var(--text-2); }

/* ================================================================
   关于我们
   ================================================================ */
.about-lead { font-size: clamp(19px, 2.2vw, 26px); font-weight: 600; line-height: 1.6; letter-spacing: -.5px; max-width: 880px; }
.about-lead em { font-style: normal; color: var(--brand); }
.value-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; margin-top: 52px; border-top: 1px solid var(--line); }
.value-item { padding: 32px 34px 32px 0; border-bottom: 1px solid var(--line); }
.value-item:nth-child(odd) { border-right: 1px solid var(--line); }
.value-item:nth-child(even) { padding-left: 34px; }
.value-item h4 { font-size: 17px; font-weight: 680; margin-bottom: 10px; letter-spacing: -.3px; }
.value-item p { font-size: 14px; color: var(--text-2); line-height: 1.78; }
.stack-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 40px; }
.stack-item { padding: 20px 18px; border-radius: var(--r); background: rgba(255, 255, 255, .05); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .10); }
.stack-item b { display: block; font-size: 13.5px; font-weight: 650; margin-bottom: 6px; }
.stack-item span { font-size: 12.5px; color: var(--on-ink-3); line-height: 1.6; display: block; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 7px; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 11px 14px; border-radius: var(--r-sm);
  border: 1px solid var(--line); background: var(--paper); font-size: 14px; outline: none;
  transition: border-color .18s, box-shadow .18s;
}
.form-row textarea { min-height: 116px; resize: vertical; }
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft);
}
.form-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-msg { font-size: 13px; margin-top: 12px; min-height: 18px; }
.form-msg.ok { color: var(--green); }
.form-msg.err { color: #c43a3a; }
.contact-side .cline { display: flex; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line-2); }
.contact-side .cline .ico { width: 36px; height: 36px; border-radius: 10px; background: var(--brand-soft); color: var(--brand); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-side .cline .ico svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.contact-side .cline b { font-size: 14px; font-weight: 650; display: block; margin-bottom: 3px; }
.contact-side .cline span { font-size: 13.5px; color: var(--text-2); }

/* ================================================================
   登录页
   ================================================================ */
.auth-page { min-height: 100vh; display: grid; grid-template-columns: 1.05fr .95fr; }
.auth-side {
  position: relative; background: var(--ink); color: var(--on-ink);
  padding: 56px 60px; display: flex; flex-direction: column; overflow: hidden;
}
.auth-side::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(620px 400px at 20% 12%, var(--glow-a), transparent 62%),
    radial-gradient(560px 400px at 92% 88%, var(--glow-c), transparent 66%);
  opacity: .58;
}
.auth-side::after {
  content: ""; position: absolute; inset: 0; opacity: .42;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 60% at 40% 40%, #000, transparent 76%);
  mask-image: radial-gradient(70% 60% at 40% 40%, #000, transparent 76%);
}
.auth-side > * { position: relative; z-index: 2; }
.auth-side h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 730; letter-spacing: -1.1px; line-height: 1.24; margin: 34px 0 16px; }
.auth-side h2 em { font-style: normal; color: var(--brand-3); }
.auth-side > p { font-size: 15px; color: var(--on-ink-2); line-height: 1.8; max-width: 460px; }
.auth-points { margin-top: 38px; display: flex; flex-direction: column; gap: 14px; }
.auth-points li { display: flex; gap: 11px; font-size: 14px; color: var(--on-ink-2); }
.auth-points svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 3px; stroke: var(--brand-3); fill: none; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.auth-side .footquote {
  margin-top: auto; padding: 20px 22px; border-radius: var(--r);
  background: rgba(255, 255, 255, .06); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12);
  font-size: 13px; color: var(--on-ink-2); line-height: 1.75;
}
.auth-main { display: flex; align-items: center; justify-content: center; padding: 48px 32px; background: var(--paper); }
.auth-card { width: 100%; max-width: 400px; }
.auth-tabs { display: flex; gap: 6px; padding: 4px; border-radius: 11px; background: var(--paper-3); margin-bottom: 26px; }
.auth-tab { flex: 1; height: 38px; border-radius: 8px; font-size: 13.5px; font-weight: 600; color: var(--text-2); transition: all .2s; }
.auth-tab.on { background: var(--paper); color: var(--text); box-shadow: var(--shadow-sm); }
.auth-hint { font-size: 12.5px; color: var(--text-3); line-height: 1.8; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line-2); }
.auth-hint a { color: var(--brand); font-weight: 600; }

/* ================================================================
   弹窗
   ================================================================ */
.modal {
  position: fixed; inset: 0; z-index: 400; display: none;
  align-items: center; justify-content: center; padding: 24px;
  background: rgba(20, 16, 14, .52); backdrop-filter: blur(4px);
}
.modal.open { display: flex; animation: fadeIn .2s var(--ease); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-card {
  width: 100%; max-width: 520px; max-height: 88vh; overflow-y: auto;
  background: var(--paper); border-radius: var(--r-xl); padding: 34px 34px 28px;
  box-shadow: var(--shadow-lg); animation: popIn .26s var(--ease);
}
@keyframes popIn { from { opacity: 0; transform: translateY(14px) scale(.985); } to { opacity: 1; transform: none; } }
.modal-card h3 { font-size: 22px; font-weight: 700; letter-spacing: -.6px; margin-bottom: 8px; }
.modal-card > p { font-size: 14px; color: var(--text-2); line-height: 1.75; margin-bottom: 22px; }
.modal-close { position: absolute; top: 18px; right: 18px; width: 32px; height: 32px; border-radius: 9px; color: var(--text-3); display: flex; align-items: center; justify-content: center; }
.modal-close:hover { background: var(--paper-3); color: var(--text); }
.modal-card .rel { position: relative; }


/* ================================================================
   滚动入场
   ================================================================ */
.rv { opacity: 0; transform: translateY(22px); transition: opacity .66s var(--ease), transform .66s var(--ease); }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; transition: none; }
  .marquee-in { animation: none; }
}

/* ================================================================
   全流程 8 步
   ================================================================ */
.flow.f8 { grid-template-columns: repeat(4, 1fr); row-gap: 40px; }

/* 价格页：周期切换 */
.cycle-wrap { display: flex; justify-content: center; margin-top: 34px; }
.cycle { display: inline-flex; gap: 4px; padding: 4px; border-radius: 12px; background: var(--paper-3); }
.cycle button { padding: 9px 20px; border-radius: 9px; font-size: 13.5px; font-weight: 600; color: var(--text-2); transition: all .2s; }
.cycle button.on { background: var(--paper); color: var(--text); box-shadow: var(--shadow-sm); }
.cycle button em { font-style: normal; font-size: 11.5px; font-weight: 650; color: var(--brand); margin-left: 5px; }
.price-grid.two { grid-template-columns: repeat(2, 1fr); max-width: 900px; margin-left: auto; margin-right: auto; }
.price-card.ent { background: var(--paper-2); }
.price-amt .was { font-size: 14px; color: var(--text-3); text-decoration: line-through; margin-left: 8px; }
.price-sub { font-size: 12.5px; color: var(--brand); font-weight: 600; margin-top: 6px; }

/* 积分包 */
.credit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 34px; }
.credit {
  padding: 24px 20px; border-radius: var(--r); background: var(--paper);
  border: 1px solid var(--line); text-align: center;
}
.credit b { display: block; font-size: 26px; font-weight: 720; letter-spacing: -.9px; }
.credit b small { font-size: 13px; font-weight: 600; color: var(--text-3); margin-left: 2px; }
.credit .amt { font-size: 16px; font-weight: 700; color: var(--brand); margin-top: 10px; }
.credit .unit { font-size: 12px; color: var(--text-3); margin-top: 4px; }

/* 浏览器扩展区块 */
.ext-band { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: center; }
.ext-list { display: flex; flex-direction: column; gap: 12px; margin: 24px 0 26px; }
.ext-list li { display: flex; gap: 10px; font-size: 14.5px; color: var(--text-2); }
.ext-list svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 3px; stroke: var(--brand); fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.ext-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.ext-actions .note { font-size: 12.5px; color: var(--text-3); }

/* ================================================================
   响应式
   ================================================================ */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-sub { max-width: none; }
  .statband .wrap { grid-template-columns: repeat(2, 1fr); }
  .stat-cell:nth-child(3) { border-left: none; padding-left: 0; }
  .stat-cell { border-top: 1px solid rgba(255, 255, 255, .08); }
  .stat-cell:nth-child(-n+2) { border-top: none; }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 30px; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .auth-page { grid-template-columns: 1fr; }
  .auth-side { padding: 40px 32px; }
  .auth-side .footquote { margin-top: 32px; }
}
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .sec { padding: 74px 0; }
  .wrap { padding: 0 20px; }
  .g2, .g3, .g4, .scene-grid, .value-row, .contact-grid, .feature-row, .arch-row { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .feature-row.flip .f-copy { order: 0; }
  .feature-row { gap: 30px; padding: 44px 0; }
  .value-item { padding: 26px 0; border-right: none !important; }
  .value-item:nth-child(even) { padding-left: 0; }
  .arch-row { gap: 14px; }
  .cmp-wrap { overflow-x: auto; }
  .cmp { min-width: 620px; }
  .cta { padding: 40px 28px; }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero { padding-top: calc(var(--nav-h) + 48px); }
  .shot-body { grid-template-columns: 72px 1fr; }
  .anchor-bar { overflow-x: auto; }
  .anchor-bar .wrap { flex-wrap: nowrap; }
}
@media (max-width: 400px) {
  .hero-title .hl { white-space: normal; }
}
@media (max-width: 560px) {
  .statband .wrap { grid-template-columns: 1fr; }
  .stat-cell { border-left: none; padding-left: 0; }
  .stat-cell { border-top: 1px solid rgba(255, 255, 255, .08); }
  .stat-cell:first-child { border-top: none; }
  .flow { grid-template-columns: 1fr; }
  .form-2 { grid-template-columns: 1fr; }
}

/* ================================================================
   新增组件响应式
   ================================================================ */
@media (max-width: 1080px) {
  .flow.f8 { grid-template-columns: repeat(2, 1fr); }
  .price-grid.two { grid-template-columns: 1fr; max-width: 560px; }
  .ext-band { grid-template-columns: 1fr; gap: 34px; }
  .credit-grid { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }
}
@media (max-width: 560px) {
  .flow.f8 { grid-template-columns: 1fr; }
  .cycle { width: 100%; }
  .cycle button { flex: 1; padding: 9px 6px; }
}

/* ---------- 企业版说明（首页价格区 / 价格页 共用 · 2026-09-18 增量） ---------- */
.ent-note { margin-top: 22px; padding: 22px 24px; border-radius: var(--r-lg); border: 1px solid var(--brand-line); background: linear-gradient(135deg, var(--brand-soft), rgba(124, 58, 237, .06)); }
.ent-note h3 { font-size: clamp(17px, 2vw, 21px); font-weight: 730; letter-spacing: -.4px; line-height: 1.55; margin-bottom: 15px; }
.ent-points { display: flex; flex-wrap: wrap; gap: 8px 10px; margin-bottom: 18px; }
.ent-points span { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--text); background: var(--paper); border: 1px solid var(--line); border-radius: 999px; padding: 7px 13px; }
.ent-points svg { width: 14px; height: 14px; stroke: var(--brand); fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ent-actions { display: flex; flex-wrap: wrap; gap: 10px; }
@media (max-width: 860px) {
  .ent-note { padding: 18px 16px; }
  .ent-points span { font-size: 12.5px; padding: 6px 11px; }

/* ---------- 2026-09-18：手机端输入框字号 ≥16px（否则 iOS 聚焦会放大整页） ---------- */
@media (max-width: 860px) {
  .form-row input, .form-row textarea, .form-row select,
  .ent-join-box input, .hi-input { font-size: 16px; }
}