/* ============================================================================
   Spider-fire 企业官网样式 v1.110.2
   适用页面：/ (官网首页 home.html) · /terms (服务条款) · /privacy (隐私条款)
   ⛔  CSP: script-src 'self' ⇒ 本文件只放样式；交互全部在 /home.js（禁止内联 script）
   设计基调：深墨蓝（信任）+ 金铜色（贸易/沉淀）+ 暖白纸感底（专业稳重）
   ⛔  terms.html / privacy.html 共用本文件：.sf-doc / .paper / .sf-co-box / .tbl /
       .note / .sf-foot 等类名与视觉必须保持可用，改动后务必三页同测。
   ============================================================================ */

:root {
  /* ---------- 文本 / 线 / 底 ---------- */
  --sf-ink: #0e1b2c;            /* 主文本：深墨蓝，替代纯黑，更"稳重" */
  --sf-ink-2: #3f4f66;          /* 次级文本 */
  --sf-ink-3: #657284;          /* 辅助文本 / 英文小字（4.9:1 on #fff，满足 AA 正文） */
  --sf-line: #e2e7ef;           /* 分隔线 */
  --sf-line-2: #eef1f6;         /* 更浅的分隔线 */
  --sf-bg: #f7f8fa;             /* 页面底色 */
  --sf-bg-warm: #fbfaf7;        /* 暖白（企业文化 / 纸张感区块） */
  --sf-card: #ffffff;

  /* ---------- 品牌色：深墨蓝 ---------- */
  --sf-brand: #17365d;
  --sf-brand-2: #2e5c8a;
  --sf-brand-3: #12304f;
  --sf-navy-deep: #0b1a2b;

  /* ---------- 强调色：金铜 ---------- */
  --sf-gold: #b08a4f;
  --sf-gold-2: #d9bd88;
  --sf-gold-ink: #86642e;       /* 浅底上可读的金铜色（正文/链接级） */

  /* ---------- 渐变 ---------- */
  --sf-grad: linear-gradient(120deg, #1d4571 0%, #17365d 52%, #0e2745 100%);
  --sf-grad-deep: linear-gradient(150deg, #14304f 0%, #0b1a2b 100%);
  --sf-grad-soft: linear-gradient(120deg, rgba(176, 138, 79, .13), rgba(23, 54, 93, .07));
  --sf-grad-gold: linear-gradient(120deg, #d9bd88 0%, #b08a4f 55%, #86642e 100%);

  /* ---------- 阴影 ---------- */
  --sf-shadow: 0 12px 34px rgba(14, 27, 44, .07);
  --sf-shadow-lg: 0 26px 70px rgba(14, 27, 44, .14);

  /* ---------- 尺寸 ---------- */
  --sf-r: 18px;
  --sf-nav-h: 72px;
  --sf-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "SF Pro Display",
             "Helvetica Neue", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --sf-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

/* —— 运行时由 home.js / 内联 style 提供的自定义属性（此处显式声明默认值，避免 var() 悬空） ——
   --d : 滚动显现的动画延迟（HTML 内联 style="--d:.05s"）
   --p : 顶部阅读进度 0→1（home.js 写入）
   声明在 :root 上，任何页面（含 terms/privacy）取用都有确定的兜底值。 */
:root { --d: 0s; --p: 0; }

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sf-font);
  background: var(--sf-bg);
  color: var(--sf-ink);
  font-size: 15.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--sf-brand-3); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg, canvas { display: block; max-width: 100%; }

::selection { background: rgba(176, 138, 79, .26); }

:focus-visible { outline: 2px solid var(--sf-brand-2); outline-offset: 3px; border-radius: 6px; }

.sf-wrap { width: min(1160px, calc(100% - 48px)); margin-inline: auto; }

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

/* ---------- 内联 SVG 图标统一描边（HTML 里只写路径，样式在此） ---------- */
.ico {
  width: 22px; height: 22px; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.6;
  stroke-linecap: round; stroke-linejoin: round;
}

/* ---------- 蛛网动效背景（极低透明度，仅作肌理） ---------- */
.sf-web { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: .5; }

/* ============================ 顶部导航 ============================ */
.sf-nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--sf-nav-h);
  display: flex; align-items: center; gap: 26px;
  padding-inline: max(24px, calc(50% - 580px));
  background: rgba(255, 255, 255, .74);
  backdrop-filter: saturate(1.7) blur(16px);
  -webkit-backdrop-filter: saturate(1.7) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.sf-nav.is-scrolled {
  border-bottom-color: var(--sf-line);
  box-shadow: 0 8px 28px rgba(14, 27, 44, .07);
  background: rgba(255, 255, 255, .93);
}

/* 顶部滚动进度（仅首页，home.js 更新 --p） */
.sf-prog {
  position: absolute; left: 0; bottom: -1px; height: 2px; width: 100%;
  background: var(--sf-grad-gold);
  transform: scaleX(var(--p, 0)); transform-origin: 0 50%;
  opacity: .85; transition: transform .12s linear;
}

.sf-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; flex: none; }
.sf-brand:hover { text-decoration: none; }
.sf-mark {
  width: 42px; height: 42px; border-radius: 12px; flex: none;
  display: grid; place-items: center; position: relative;
  background: var(--sf-grad-deep); color: var(--sf-gold-2);
  font-weight: 800; font-size: 14.5px; letter-spacing: .8px;
  box-shadow: 0 8px 20px rgba(11, 26, 43, .28), inset 0 0 0 1px rgba(217, 189, 136, .34);
}
.sf-brandtxt { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.sf-brandtxt b { font-size: 16.5px; letter-spacing: .2px; }
.sf-brandtxt small { font-size: 11px; color: var(--sf-ink-3); letter-spacing: 1.1px; }

.sf-links { display: flex; align-items: center; gap: 2px; margin-inline: auto; }
.sf-links a {
  position: relative; padding: 8px 13px; border-radius: 8px;
  color: var(--sf-ink-2); font-size: 14px; text-decoration: none;
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.sf-links a::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 3px; height: 2px;
  border-radius: 2px; background: var(--sf-grad-gold);
  transform: scaleX(0); transform-origin: 0 50%; transition: transform .22s ease;
}
.sf-links a:hover { color: var(--sf-brand-3); background: rgba(23, 54, 93, .05); text-decoration: none; }
.sf-links a.is-active { color: var(--sf-brand); font-weight: 700; }
.sf-links a.is-active::after { transform: scaleX(1); }

.sf-navcta { display: flex; align-items: center; gap: 12px; flex: none; }

/* ---------- 按钮 ---------- */
.sf-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px; border-radius: 10px; border: 1px solid transparent;
  font-family: inherit; font-size: 14.5px; font-weight: 600; line-height: 1.4;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: transform .18s, box-shadow .18s, background .18s, color .18s, border-color .18s;
}
.sf-btn:hover { text-decoration: none; }
.sf-btn-primary {
  background: var(--sf-grad); color: #fff;
  box-shadow: 0 10px 24px rgba(23, 54, 93, .26);
  position: relative; overflow: hidden;
}
.sf-btn-primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(217, 189, 136, .28), transparent 60%);
  opacity: 0; transition: opacity .2s;
}
.sf-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 32px rgba(23, 54, 93, .34); }
.sf-btn-primary:hover::after { opacity: 1; }
.sf-btn-ghost { background: #fff; border-color: var(--sf-line); color: var(--sf-ink); }
.sf-btn-ghost:hover { border-color: var(--sf-gold); color: var(--sf-gold-ink); transform: translateY(-2px); }
.sf-btn-lg { padding: 14px 30px; font-size: 15.5px; border-radius: 12px; }

/* ---------- 汉堡 ---------- */
.sf-burger {
  display: none; width: 42px; height: 42px; border-radius: 11px;
  border: 1px solid var(--sf-line); background: #fff; cursor: pointer;
  padding: 0; place-items: center; gap: 5px; flex-direction: column;
}
.sf-burger i { display: block; width: 18px; height: 2px; border-radius: 2px; background: var(--sf-ink); transition: transform .25s, opacity .25s; }
.sf-burger[aria-expanded="true"] i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.sf-burger[aria-expanded="true"] i:nth-child(2) { opacity: 0; }
.sf-burger[aria-expanded="true"] i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================ Hero ============================ */
.sf-hero { position: relative; z-index: 1; padding: calc(var(--sf-nav-h) + 76px) 0 84px; overflow: hidden; }
.sf-hero::before {
  content: ""; position: absolute; inset: -20% -10% auto; height: 760px; z-index: -2;
  background:
    radial-gradient(42% 40% at 12% 6%, rgba(46, 92, 138, .14), transparent 70%),
    radial-gradient(36% 36% at 88% 2%, rgba(176, 138, 79, .16), transparent 70%),
    radial-gradient(40% 34% at 62% 66%, rgba(23, 54, 93, .07), transparent 70%);
  pointer-events: none;
}
/* 极淡的"账本网格"肌理：等价于账本横线，克制到几乎看不见 */
.sf-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(23, 54, 93, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(23, 54, 93, .045) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: radial-gradient(72% 62% at 50% 32%, #000 0%, transparent 78%);
  mask-image: radial-gradient(72% 62% at 50% 32%, #000 0%, transparent 78%);
}
.sf-hero .sf-wrap { position: relative; }

.sf-hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  gap: 56px; align-items: center;
}
/* 网格子项默认 min-width:auto，长英文地址会把列撑宽 —— 显式归零以允许换行 */
.sf-hero-txt { min-width: 0; }

/* ---------- 眉标（Hero 顶部小标签） ---------- */
.sf-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px 7px 12px; border-radius: 8px;
  background: rgba(255, 255, 255, .82);
  border: 1px solid rgba(176, 138, 79, .34);
  font-size: 13px; font-weight: 700; letter-spacing: .6px;
  color: var(--sf-gold-ink);
  box-shadow: 0 4px 16px rgba(14, 27, 44, .05);
}
.sf-eyebrow i {
  width: 7px; height: 7px; border-radius: 50%; flex: none;
  background: var(--sf-gold); box-shadow: 0 0 0 4px rgba(176, 138, 79, .16);
}

/* ---------- 通用胶囊徽标（条款页 Hero 用） ---------- */
.sf-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 8px 18px; border-radius: 999px;
  background: #fff; border: 1px solid var(--sf-line);
  font-size: 13.5px; font-weight: 600; color: var(--sf-ink-2);
  box-shadow: 0 4px 16px rgba(14, 27, 44, .05);
}
.sf-badge i { width: 8px; height: 8px; border-radius: 50%; background: var(--sf-grad-gold); box-shadow: 0 0 0 4px rgba(176, 138, 79, .16); }

.sf-hero h1 {
  margin: 22px 0 20px;
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.18; font-weight: 800; letter-spacing: .2px;
}
.sf-grad {
  background: linear-gradient(120deg, #24507f 0%, #17365d 55%, #0b1a2b 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.sf-lead {
  margin: 0 0 30px; max-width: 620px;
  font-size: clamp(15px, 1.6vw, 16.5px); color: var(--sf-ink-2); line-height: 1.8;
}
.sf-lead b { color: var(--sf-ink); font-weight: 700; }
.sf-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.sf-hero-note {
  margin: 26px 0 0; font-size: 12.5px; color: var(--sf-ink-3);
  letter-spacing: .2px; word-break: break-word; max-width: 560px;
}

/* ---------- Hero 右侧：服务链条速览面板 ---------- */
.sf-hero-panel {
  position: relative; border-radius: 22px; padding: 26px 26px 24px;
  background: var(--sf-grad-deep); color: #e8edf5;
  box-shadow: var(--sf-shadow-lg), inset 0 0 0 1px rgba(217, 189, 136, .26);
  overflow: hidden;
}
.sf-hero-panel::before {
  content: ""; position: absolute; right: -90px; top: -110px; width: 260px; height: 260px;
  border-radius: 50%; background: radial-gradient(circle, rgba(217, 189, 136, .22), transparent 68%);
  pointer-events: none;
}
.hp-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.hp-tag {
  font-family: var(--sf-mono); font-size: 10.5px; letter-spacing: 1.6px;
  color: var(--sf-gold-2); opacity: .95;
}
.hp-live {
  width: 8px; height: 8px; border-radius: 50%; flex: none;
  background: var(--sf-gold-2);
  box-shadow: 0 0 0 4px rgba(217, 189, 136, .16);
  animation: sfPulse 2.6s ease-in-out infinite;
}
@keyframes sfPulse { 0%, 100% { opacity: 1; } 50% { opacity: .38; } }
.hp-h {
  margin: 14px 0 18px; font-size: 20px; font-weight: 800; letter-spacing: .4px; color: #fff;
  padding-bottom: 14px; border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.hp-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 2px; }
.hp-list li {
  display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 10px;
  padding: 9px 8px; border-radius: 8px;
  transition: background .2s;
}
.hp-list li:hover { background: rgba(255, 255, 255, .06); }
.hp-list i {
  font-style: normal; font-family: var(--sf-mono); font-size: 11px;
  color: var(--sf-gold-2); opacity: .8; letter-spacing: .5px;
}
.hp-list b { font-size: 14.5px; font-weight: 600; color: #eef2f8; }
.hp-list span { font-size: 12px; color: #93a2b8; letter-spacing: .3px; }
.hp-foot {
  margin-top: 16px; padding-top: 14px; border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: 12.5px; color: #a9b6c8; line-height: 1.65;
}

/* ---------- Hero 数据条 ---------- */
.sf-stats {
  margin: 68px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  list-style: none;
}
.sf-stats li {
  position: relative;
  background: var(--sf-card); border: 1px solid var(--sf-line); border-radius: 14px;
  padding: 22px 20px 18px; box-shadow: var(--sf-shadow);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  overflow: hidden;
}
.sf-stats li::before {
  content: ""; position: absolute; left: 0; top: 0; width: 34px; height: 3px;
  background: var(--sf-grad-gold);
}
.sf-stats li:hover { transform: translateY(-4px); box-shadow: var(--sf-shadow-lg); border-color: rgba(176, 138, 79, .38); }
.sf-stats .n {
  display: block; font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; line-height: 1.2;
  color: var(--sf-brand); letter-spacing: -.4px;
  font-variant-numeric: tabular-nums;
}
.sf-stats .n em { font-style: normal; color: var(--sf-gold); font-size: .78em; margin-inline: 1px; }
.sf-stats .t { display: block; margin-top: 6px; font-size: 12.5px; color: var(--sf-ink-3); letter-spacing: .3px; }

/* ============================ 通用区块 ============================ */
.sf-sec { position: relative; z-index: 1; padding: 96px 0; scroll-margin-top: calc(var(--sf-nav-h) + 8px); }
.sf-sec-alt { background: linear-gradient(180deg, #f0f3f8 0%, #f7f8fa 100%); }
.sf-sec-culture {
  background: linear-gradient(180deg, var(--sf-bg-warm) 0%, #f7f8fa 100%);
  border-top: 1px solid var(--sf-line-2); border-bottom: 1px solid var(--sf-line-2);
}

.sf-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sf-mono);
  font-size: 11.5px; font-weight: 700; letter-spacing: 2.4px; color: var(--sf-gold-ink);
  text-transform: uppercase;
}
.sf-kicker::before { content: ""; width: 24px; height: 1px; border-radius: 1px; background: var(--sf-gold); }

.sf-h2 {
  margin: 14px 0 14px; font-size: clamp(25px, 3.2vw, 36px); line-height: 1.3;
  font-weight: 800; letter-spacing: .2px;
}
.sf-sub { max-width: 780px; margin: 0 0 46px; color: var(--sf-ink-2); font-size: 15.5px; line-height: 1.8; }

/* 滚动显现（由 home.js 加 .in）
   ★ v1.110.1 渐进增强：默认**可见**，只有 JS 成功运行时才在 <html> 上加 .sf-reveal，
     把 .sf-rv 关掉再逐个显现。
   ⛔ 为什么必须这么写：原来直接 `.sf-rv { opacity: 0 }`，显现完全依赖 home.js。
     JS 一旦没加载（CDN 抖动 / 被拦截 / 语法错），这层 opacity:0 照样生效
     ⇒ 实测 64 个 .sf-rv 里 58 个永久不可见，可见正文从 4005 字掉到 1631 字（丢 59%），
     而**浏览器不报任何错**：有导航、有页脚、中间一片空白。
     这种页面"正常网络下测一百遍"全绿 —— 只有让 JS 真的失败才看得见。 */
.sf-rv {
  opacity: 1; transform: none;
}
html.sf-reveal .sf-rv {
  opacity: 0; transform: translateY(22px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.22, .8, .28, 1);
  transition-delay: var(--d, 0s);
}
html.sf-reveal .sf-rv.in { opacity: 1; transform: none; }

/* ============================ 企业文化 ============================ */
.sf-pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sf-pillar {
  position: relative; background: var(--sf-card); border: 1px solid var(--sf-line);
  border-radius: var(--sf-r); padding: 30px 26px 28px;
  box-shadow: var(--sf-shadow);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  overflow: hidden;
}
.sf-pillar::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--sf-grad-gold); opacity: .85;
}
.sf-pillar:hover { transform: translateY(-5px); box-shadow: var(--sf-shadow-lg); border-color: rgba(176, 138, 79, .4); }
.sf-pillar .p-k {
  display: block; font-family: var(--sf-mono); font-size: 10.5px; letter-spacing: 1.8px;
  color: var(--sf-gold-ink); font-weight: 700; margin-bottom: 14px;
}
.sf-pillar h3 { margin: 0 0 12px; font-size: 18px; line-height: 1.5; font-weight: 800; letter-spacing: .2px; }
.sf-pillar p { margin: 0; font-size: 14.5px; color: var(--sf-ink-2); line-height: 1.75; }
.p-vals { margin: 4px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.p-vals li {
  font-size: 14px; color: var(--sf-ink-2); line-height: 1.6;
  padding-left: 16px; position: relative;
}
.p-vals li::before {
  content: ""; position: absolute; left: 0; top: .62em;
  width: 6px; height: 6px; border-radius: 1px; transform: rotate(45deg);
  background: var(--sf-gold);
}
.p-vals li b { color: var(--sf-ink); margin-right: 8px; font-weight: 700; }

/* ---------- 信念 → 环节 → 客户得到 ---------- */
.sf-culture-map {
  margin-top: 26px; background: var(--sf-card); border: 1px solid var(--sf-line);
  border-radius: var(--sf-r); box-shadow: var(--sf-shadow); overflow: hidden;
}
.cm-head, .cm-row {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 24px; align-items: center; padding: 15px 26px;
}
.cm-head {
  background: var(--sf-brand);
  color: #dfe7f1; font-family: var(--sf-mono);
  font-size: 10.5px; letter-spacing: 1.8px; font-weight: 700; text-transform: uppercase;
}
.cm-row { border-top: 1px solid var(--sf-line-2); transition: background .2s; }
.cm-row:hover { background: #fafbfd; }
.cm-a { font-size: 14.5px; font-weight: 700; color: var(--sf-brand); }
.cm-b { font-size: 14px; color: var(--sf-ink-2); line-height: 1.7; }
.cm-c { font-size: 14px; color: var(--sf-gold-ink); font-weight: 600; line-height: 1.7; }

/* ---------- 二十余年 · 时间刻度 ---------- */
.sf-axis {
  margin-top: 20px; padding: 28px 30px 30px;
  border-radius: var(--sf-r); border: 1px dashed rgba(176, 138, 79, .42);
  background: linear-gradient(120deg, rgba(176, 138, 79, .07), rgba(23, 54, 93, .04));
}
.ax-cap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; margin-bottom: 22px; }
.ax-q { font-size: 17px; font-weight: 800; color: var(--sf-brand); letter-spacing: .3px; }
.ax-s { font-size: 13.5px; color: var(--sf-ink-3); }
.ax-nodes {
  position: relative; margin: 0; padding: 0; list-style: none;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.ax-nodes::before {
  content: ""; position: absolute; left: 6px; right: 6px; top: 6px; height: 1px;
  background: linear-gradient(90deg, var(--sf-gold) 0%, rgba(176, 138, 79, .28) 100%);
}
.ax-nodes li { position: relative; padding-top: 26px; }
.ax-nodes li::before {
  content: ""; position: absolute; left: 0; top: 0;
  width: 13px; height: 13px; border-radius: 50%;
  background: #fff; border: 2px solid var(--sf-gold);
  box-shadow: 0 0 0 3px rgba(176, 138, 79, .13);
}
.ax-nodes li:last-child::before { background: var(--sf-gold); }
.ax-nodes b { display: block; font-size: 14px; font-weight: 800; color: var(--sf-ink); margin-bottom: 4px; }
.ax-nodes span { display: block; font-size: 13px; color: var(--sf-ink-2); line-height: 1.65; }

/* ============================ 关于我们 ============================ */
.sf-about { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.sf-about p { color: var(--sf-ink-2); margin: 0 0 18px; font-size: 15.5px; line-height: 1.85; }
.sf-about p b { color: var(--sf-ink); }
.sf-about .sf-h2 { margin-top: 12px; }

.sf-co {
  position: relative; border-radius: 22px; padding: 32px 30px;
  background: var(--sf-grad-deep); color: #eef2f8;
  box-shadow: var(--sf-shadow-lg), inset 0 0 0 1px rgba(217, 189, 136, .24);
  overflow: hidden;
}
.sf-co::after {
  content: ""; position: absolute; right: -70px; top: -80px; width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 189, 136, .2), transparent 70%);
}
.sf-co::before {
  content: ""; position: absolute; left: -60px; bottom: -90px; width: 220px; height: 220px; border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 92, 138, .34), transparent 70%);
}
.sf-co .k { position: relative; font-family: var(--sf-mono); font-size: 10.5px; letter-spacing: 2px; opacity: .9; font-weight: 700; color: var(--sf-gold-2); }
.sf-co .cn { position: relative; margin: 12px 0 4px; font-size: 23px; font-weight: 800; letter-spacing: .6px; color: #fff; }
.sf-co .en { position: relative; font-size: 13.5px; font-weight: 600; opacity: .92; letter-spacing: .8px; word-break: break-word; }
.sf-co .hr { position: relative; height: 1px; background: rgba(255, 255, 255, .14); margin: 22px 0; }
.sf-co .row { position: relative; display: flex; gap: 12px; font-size: 13.5px; line-height: 1.65; }
.sf-co .row .ic {
  flex: none; width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(217, 189, 136, .26);
  color: var(--sf-gold-2); font-size: 15px;
}
.sf-co .row .ic .ico { width: 18px; height: 18px; }
.sf-co .row .tx b { display: block; font-size: 12px; opacity: .8; font-weight: 600; letter-spacing: .6px; }
.sf-co .row .tx span { opacity: .95; word-break: break-word; }

/* ============================ 卡片通用 ============================ */
.sf-grid { display: grid; gap: 20px; }
.sf-grid-4 { grid-template-columns: repeat(4, 1fr); }
.sf-grid-3 { grid-template-columns: repeat(3, 1fr); }
.sf-grid-2 { grid-template-columns: repeat(2, 1fr); }

.sf-card {
  position: relative; background: var(--sf-card); border: 1px solid var(--sf-line);
  border-radius: var(--sf-r); padding: 28px 26px; box-shadow: var(--sf-shadow);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  overflow: hidden;
}
.sf-card::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 2px;
  background: var(--sf-grad-gold); opacity: 0; transition: opacity .25s;
}
.sf-card:hover { transform: translateY(-5px); box-shadow: var(--sf-shadow-lg); border-color: rgba(23, 54, 93, .22); }
.sf-card:hover::after { opacity: 1; }
.sf-card .ic {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--sf-grad-soft); border: 1px solid rgba(23, 54, 93, .12);
  color: var(--sf-brand); margin-bottom: 18px;
}
.sf-card .ic .ico { width: 22px; height: 22px; }
.sf-card h3 { margin: 0 0 10px; font-size: 17.5px; font-weight: 800; letter-spacing: .2px; }
.sf-card p { margin: 0; font-size: 14px; color: var(--sf-ink-2); line-height: 1.75; }
.sf-card .en-tag {
  display: inline-block; margin-top: 16px;
  font-family: var(--sf-mono); font-size: 10px; letter-spacing: 1.6px;
  color: var(--sf-ink-3); font-weight: 600;
}

/* ============================ 服务链条 ============================ */
.sf-chain {
  position: relative;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin: 0; padding: 0; list-style: none;
  --st-gap: 16px;
  --st-rail: 30px;      /* 轨道线距卡片顶部的距离（与 .st-dot 圆心对齐） */
}
.sf-step {
  position: relative; background: var(--sf-card); border: 1px solid var(--sf-line);
  border-radius: 14px; padding: 78px 20px 20px;
  box-shadow: var(--sf-shadow);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
/* 环节之间的连线：卡片顶部一条水平轨，圆点居中压在轨上。
   轨道左右各向外延伸半个栅格间距，使相邻卡片的轨道首尾相接（视觉上始终是一条完整的链）。 */
.sf-step::before {
  content: ""; position: absolute; top: var(--st-rail); height: 1px;
  left: calc(var(--st-gap) / -2); right: calc(var(--st-gap) / -2);
  background: rgba(176, 138, 79, .38);
}
.sf-step:first-child::before { left: 0; }
.sf-step:last-child::before { right: 0; }
.sf-step:hover { transform: translateY(-4px); box-shadow: var(--sf-shadow-lg); border-color: rgba(176, 138, 79, .45); }
.sf-step .st-dot {
  position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  background: #fff; border: 1px solid rgba(176, 138, 79, .42);
  color: var(--sf-brand);
  box-shadow: 0 4px 14px rgba(14, 27, 44, .06);
  transition: background .25s, color .25s, border-color .25s;
}
.sf-step .st-dot .ico { width: 20px; height: 20px; }
.sf-step:hover .st-dot { background: var(--sf-brand); color: var(--sf-gold-2); border-color: var(--sf-brand); }
.sf-step .st-n {
  display: block; font-family: var(--sf-mono); font-size: 10.5px; letter-spacing: 1.6px;
  color: var(--sf-gold-ink); font-weight: 700; margin-bottom: 8px;
}
.sf-step h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 800; letter-spacing: .2px; }
.sf-step p { margin: 0 0 12px; font-size: 13.5px; color: var(--sf-ink-2); line-height: 1.72; }
.sf-step .st-y {
  display: block; font-size: 12.5px; color: var(--sf-brand-2); font-weight: 600;
  padding-left: 10px; border-left: 2px solid rgba(176, 138, 79, .5); line-height: 1.55;
}

/* 方便 / 有信心 */
.sf-promise { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 22px; }
.pm {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 22px 24px; border-radius: 14px;
  background: var(--sf-grad-soft); border: 1px solid rgba(23, 54, 93, .1);
}
.pm-ic {
  flex: none; width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: #fff; border: 1px solid rgba(176, 138, 79, .34); color: var(--sf-gold-ink);
}
.pm-ic .ico { width: 18px; height: 18px; }
.pm b { display: block; font-size: 15.5px; font-weight: 800; color: var(--sf-brand); margin-bottom: 4px; }
.pm p { margin: 0; font-size: 13.5px; color: var(--sf-ink-2); line-height: 1.7; }

/* ============================ 全球市场 ============================ */
.sf-mkt { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sf-mkt .sf-card { padding: 32px 26px; }
.sf-mkt .flag {
  width: 58px; height: 58px; border-radius: 14px; display: grid; place-items: center;
  font-family: var(--sf-mono); font-size: 14px; font-weight: 700; letter-spacing: 1px; color: #fff;
  margin-bottom: 18px;
  box-shadow: 0 10px 22px rgba(14, 27, 44, .2);
}
.sf-mkt .c1 { background: linear-gradient(135deg, #24507f, #17365d); }
.sf-mkt .c2 { background: linear-gradient(135deg, #2e5c8a, #12304f); }
.sf-mkt .c3 { background: linear-gradient(135deg, #b08a4f, #86642e); }
.sf-mkt h3 { margin: 0 0 4px; font-size: 19px; }
.sf-mkt .en {
  font-family: var(--sf-mono); font-size: 10.5px; letter-spacing: 1.6px;
  color: var(--sf-ink-3); font-weight: 600; margin-bottom: 14px;
}
.sf-mkt p { margin: 0 0 16px; font-size: 14px; color: var(--sf-ink-2); }
.sf-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.sf-tags span {
  padding: 4px 11px; border-radius: 6px; font-size: 12px; font-weight: 600;
  background: rgba(23, 54, 93, .05); color: var(--sf-brand-2);
  border: 1px solid rgba(23, 54, 93, .1);
}

/* 市场跑马灯 */
.sf-marquee {
  margin-top: 40px; overflow: hidden;
  border-block: 1px solid var(--sf-line); padding: 16px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.sf-marquee .track { display: flex; gap: 40px; width: max-content; animation: sfMq 40s linear infinite; }
.sf-marquee span { font-size: 13.5px; font-weight: 600; color: var(--sf-ink-3); white-space: nowrap; letter-spacing: .4px; }
.sf-marquee span i { font-style: normal; color: var(--sf-gold); margin-right: 8px; font-size: 10px; vertical-align: 1px; }
@keyframes sfMq { to { transform: translateX(-50%); } }

/* ============================ 核心优势 ============================ */
.sf-adv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; counter-reset: adv; }
.sf-adv .sf-card { display: flex; gap: 18px; align-items: flex-start; padding: 26px 24px; }
.sf-adv .no {
  counter-increment: adv; flex: none;
  width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center;
  background: var(--sf-grad); color: var(--sf-gold-2);
  font-family: var(--sf-mono); font-weight: 700; font-size: 14px;
  box-shadow: 0 8px 18px rgba(23, 54, 93, .24);
}
.sf-adv .no::before { content: "0" counter(adv); }
.sf-adv h3 { margin: 2px 0 8px; font-size: 16.5px; }
.sf-adv p { font-size: 13.5px; }

/* ============================ 联系我们 ============================ */
.sf-contact { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: stretch; }
.sf-contact .sf-card { display: flex; flex-direction: column; }
.sf-contact .ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--sf-grad-soft); border: 1px solid rgba(23, 54, 93, .12); color: var(--sf-brand); margin-bottom: 16px; }
.sf-contact h3 { margin: 0 0 8px; font-size: 17.5px; }
.sf-contact p { margin: 0; font-size: 14px; color: var(--sf-ink-2); }
.sf-contact .addr { font-size: 14px; line-height: 1.85; color: var(--sf-ink-2); word-break: break-word; font-style: normal; }
.sf-contact .addr b { color: var(--sf-ink); }
.sf-legal-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.sf-legal-links a {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; border-radius: 8px; border: 1px solid var(--sf-line); background: #fff;
  font-size: 13px; font-weight: 600; color: var(--sf-ink-2); text-decoration: none;
  transition: border-color .2s, color .2s, transform .2s, background .2s;
}
.sf-legal-links a .ico { width: 16px; height: 16px; color: var(--sf-gold-ink); }
.sf-legal-links a:hover {
  border-color: rgba(176, 138, 79, .55); color: var(--sf-brand);
  background: #fdfcfa; transform: translateY(-2px); text-decoration: none;
}

/* ============================ 底部 CTA 带 ============================ */
.sf-cta-band { position: relative; z-index: 1; padding: 16px 0 96px; }
.sf-cta-band .box {
  position: relative; overflow: hidden;
  border-radius: 24px; padding: 56px 48px; text-align: center;
  background: var(--sf-grad-deep); color: #eef2f8;
  box-shadow: var(--sf-shadow-lg), inset 0 0 0 1px rgba(217, 189, 136, .24);
}
.sf-cta-band .box::after {
  content: ""; position: absolute; right: -70px; top: -90px; width: 280px; height: 280px; border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 189, 136, .26), transparent 70%);
}
.sf-cta-band .box::before {
  content: ""; position: absolute; left: -80px; bottom: -100px; width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 92, 138, .4), transparent 70%);
}
.sf-cta-band .box-k {
  position: relative; display: inline-block; font-family: var(--sf-mono);
  font-size: 10.5px; letter-spacing: 2.6px; color: var(--sf-gold-2); margin-bottom: 14px;
}
.sf-cta-band h2 { position: relative; margin: 0 0 12px; font-size: clamp(23px, 3vw, 32px); font-weight: 800; color: #fff; letter-spacing: .3px; }
.sf-cta-band p { position: relative; margin: 0 auto 30px; max-width: 640px; opacity: .9; font-size: 15px; line-height: 1.8; }
.sf-cta-band .sf-btn {
  position: relative; background: #fff; color: var(--sf-brand); border-color: transparent;
  box-shadow: 0 12px 28px rgba(5, 12, 22, .34);
}
.sf-cta-band .sf-btn:hover { transform: translateY(-2px); background: var(--sf-gold-2); color: var(--sf-navy-deep); }

/* ============================ 页脚（深色） ============================ */
.sf-foot {
  position: relative; z-index: 1;
  background: var(--sf-navy-deep); color: #c2cbd9;
  padding: 60px 0 34px; margin-top: 0;
  border-top: 1px solid rgba(217, 189, 136, .22);
}
.sf-foot .sf-wrap { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; }
.sf-foot .sf-brandtxt b, .sf-foot .sf-brand { color: #fff; }
.sf-foot .sf-brandtxt small { color: #8394a9; }
.sf-foot .sf-mark { box-shadow: 0 8px 20px rgba(0, 0, 0, .4), inset 0 0 0 1px rgba(217, 189, 136, .4); }
.sf-foot .f-about { font-size: 13.5px; line-height: 1.85; color: #9fb0c4; margin: 16px 0 0; max-width: 420px; }
.sf-foot h4 {
  margin: 0 0 14px; font-family: var(--sf-mono); font-size: 10.5px;
  letter-spacing: 2px; color: #8b9cb0; font-weight: 700; text-transform: uppercase;
}
.sf-foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.sf-foot a { color: #c2cbd9; font-size: 13.5px; text-decoration: none; transition: color .2s; }
.sf-foot a:hover { color: var(--sf-gold-2); text-decoration: none; }
.sf-foot .f-addr { font-size: 13px; line-height: 1.85; color: #9fb0c4; font-style: normal; word-break: break-word; }
.sf-foot .f-bar {
  grid-column: 1 / -1; margin-top: 34px; padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center; justify-content: space-between;
  font-size: 12.5px; color: #8394a9;
}
.sf-foot .f-bar .f-legal { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.sf-foot .f-bar .f-legal a { font-size: 12.5px; color: #9fb0c4; }
.sf-foot .f-bar .f-admin { color: #778899; }
.sf-foot .f-bar .f-admin:hover { color: #9fb0c4; }

/* ============================================================================
   条款页（服务条款 / 隐私条款）—— ⛔ 结构契约，改样式不影响这几块的可读性
   ============================================================================ */
.pg-doc .sf-hero { padding-bottom: 44px; }
.pg-doc .sf-hero .sf-wrap { text-align: center; }
.pg-doc .sf-hero h1 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 14px; }
.pg-doc .sf-hero .sf-lead { margin: 0 auto; max-width: 720px; text-align: center; }

.sf-doc { position: relative; z-index: 1; padding: 8px 0 96px; }
.sf-doc .paper {
  max-width: 880px; margin-inline: auto;
  background: var(--sf-card); border: 1px solid var(--sf-line); border-radius: 20px;
  box-shadow: var(--sf-shadow); padding: clamp(28px, 4.5vw, 56px);
}
.sf-doc .meta { display: flex; flex-wrap: wrap; gap: 10px 26px; font-size: 13px; color: var(--sf-ink-3); margin-bottom: 8px; }
.sf-doc .meta b { color: var(--sf-ink-2); font-weight: 600; }

.sf-co-box {
  margin: 22px 0 34px; padding: 22px 24px; border-radius: 14px;
  background: var(--sf-grad-soft); border: 1px solid rgba(176, 138, 79, .34);
}
.sf-co-box .k { font-family: var(--sf-mono); font-size: 10.5px; letter-spacing: 2px; color: var(--sf-gold-ink); font-weight: 700; }
.sf-co-box .cn { font-size: 17px; font-weight: 800; margin-top: 6px; letter-spacing: .4px; color: var(--sf-ink); }
.sf-co-box .en { font-size: 13.5px; font-weight: 700; color: var(--sf-brand); letter-spacing: .5px; margin-top: 2px; word-break: break-word; }
.sf-co-box .ad { font-size: 14px; color: var(--sf-ink-2); margin-top: 8px; line-height: 1.7; word-break: break-word; }

.sf-doc h2 {
  display: flex; align-items: baseline; gap: 12px;
  margin: 40px 0 14px; font-size: 19.5px; font-weight: 800; letter-spacing: .2px;
  padding-top: 20px; border-top: 1px solid var(--sf-line);
}
.sf-doc h2 .no {
  flex: none; font-family: var(--sf-mono); font-size: 11px; font-weight: 700; color: var(--sf-gold-2);
  background: var(--sf-brand); border-radius: 6px; padding: 3px 9px; letter-spacing: 1px;
}
.sf-doc h3 { margin: 24px 0 8px; font-size: 16px; font-weight: 700; }
.sf-doc p { margin: 0 0 14px; color: var(--sf-ink-2); font-size: 15px; line-height: 1.8; }
.sf-doc p b, .sf-doc li b { color: var(--sf-ink); }
.sf-doc ul, .sf-doc ol { margin: 0 0 14px; padding-left: 24px; color: var(--sf-ink-2); font-size: 15px; }
.sf-doc li { margin-bottom: 8px; line-height: 1.78; }
.sf-doc .note {
  border-left: 3px solid var(--sf-gold); background: var(--sf-grad-soft);
  border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 18px 0;
  font-size: 14px; color: var(--sf-ink-2);
}
.sf-doc .tbl { width: 100%; border-collapse: collapse; margin: 14px 0 20px; font-size: 14px; }
.sf-doc .tbl th, .sf-doc .tbl td {
  border: 1px solid var(--sf-line); padding: 10px 14px; text-align: left;
  vertical-align: top; line-height: 1.65;
}
.sf-doc .tbl th { background: #f2f4f8; font-weight: 700; color: var(--sf-ink); white-space: nowrap; }
.sf-doc .tbl td { color: var(--sf-ink-2); }
.sf-doc .doc-foot {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--sf-line);
  font-size: 13px; color: var(--sf-ink-3);
  display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between;
}
.sf-doc .doc-foot a { font-weight: 600; }

/* ============================ 响应式 ============================ */
@media (min-width: 1180px) {
  .sf-chain { grid-template-columns: repeat(6, 1fr); gap: 14px; --st-gap: 14px; }
  .sf-step { padding: 76px 16px 18px; }
}

@media (max-width: 1080px) {
  .sf-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .sf-hero-panel { max-width: 560px; }
  .sf-lead { max-width: 720px; }
}

@media (max-width: 1024px) {
  .sf-about { grid-template-columns: 1fr; gap: 34px; }
  .sf-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .sf-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .sf-mkt { grid-template-columns: 1fr; }
  .sf-pillars { grid-template-columns: 1fr; }
  .sf-foot .sf-wrap { grid-template-columns: 1fr 1fr; }
  .sf-foot .f-brandcol { grid-column: 1 / -1; }
  .cm-head, .cm-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 18px; padding: 14px 22px; }
  .cm-head span:nth-child(3), .cm-c { grid-column: 2; }
  .cm-head span:nth-child(3) { display: none; }
  .cm-c::before { content: "→ 客户得到："; color: var(--sf-ink-3); font-weight: 600; }
  .ax-nodes { grid-template-columns: repeat(2, 1fr); gap: 22px 18px; }
  .ax-nodes::before { display: none; }
}

@media (max-width: 760px) {
  body { font-size: 15px; }
  .sf-links {
    position: absolute; top: calc(var(--sf-nav-h) + 8px); left: 16px; right: 16px;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: #fff; border: 1px solid var(--sf-line); border-radius: 14px;
    box-shadow: var(--sf-shadow-lg); padding: 10px;
    display: none;
  }
  .sf-links a { padding: 12px 14px; font-size: 15px; border-radius: 8px; }
  .sf-links a::after { display: none; }
  .sf-links.is-open { display: flex; }
  .sf-burger { display: grid; }
  .sf-nav { gap: 12px; padding-inline: 16px; }
  .sf-nav .sf-btn-primary { display: none; }
  .sf-brandtxt small { display: none; }

  /* ⛔ 条款页没有汉堡按钮：导航保持可见，允许横向滚动，避免"看不见菜单" */
  .pg-doc .sf-links {
    position: static; display: flex; flex-direction: row; gap: 0;
    background: transparent; border: 0; box-shadow: none; padding: 0;
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none; margin-inline: auto;
  }
  .pg-doc .sf-links::-webkit-scrollbar { display: none; }
  .pg-doc .sf-links a { padding: 8px 9px; font-size: 13px; border-radius: 6px; }

  .sf-hero { padding: calc(var(--sf-nav-h) + 48px) 0 56px; }
  .sf-hero h1 { font-size: clamp(28px, 7.6vw, 38px); }
  .sf-sec { padding: 62px 0; }
  .sf-sub { margin-bottom: 34px; }
  .sf-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 44px; }
  .sf-stats li { padding: 18px 16px 16px; }
  .sf-grid-4, .sf-grid-3, .sf-grid-2, .sf-adv, .sf-contact, .sf-promise { grid-template-columns: 1fr; }
  .sf-mkt { grid-template-columns: 1fr; }
  .sf-hero-note { font-size: 11.5px; }

  /* 服务链条：竖向时间轴（轨道改为竖直，贯穿上下相邻卡片） */
  .sf-chain { grid-template-columns: 1fr; gap: 14px; --st-gap: 14px; }
  .sf-step { padding: 22px 20px 20px 74px; }
  .sf-step::before {
    left: 42px; right: auto; top: calc(var(--st-gap) / -2); bottom: calc(var(--st-gap) / -2);
    width: 1px; height: auto;
    background: rgba(176, 138, 79, .34);
  }
  .sf-step:first-child::before { top: 22px; }
  .sf-step:last-child::before { bottom: 22px; }
  .sf-step .st-dot { top: 20px; left: 20px; transform: none; }

  /* 文化与刻度 */
  .cm-head { display: none; }
  .cm-row {
    grid-template-columns: 1fr; gap: 8px; padding: 18px 20px;
    border-top: 1px solid var(--sf-line-2);
  }
  .cm-c { grid-column: auto; }
  .sf-axis { padding: 22px 20px; }
  .ax-nodes { grid-template-columns: 1fr; gap: 16px; }
  .ax-nodes li { padding-top: 0; padding-left: 26px; }
  .ax-nodes li::before { top: 6px; left: 0; }

  .sf-foot .sf-wrap { grid-template-columns: 1fr; gap: 28px; }
  .sf-cta-band { padding-bottom: 64px; }
  .sf-cta-band .box { padding: 38px 24px; border-radius: 18px; }
  .sf-doc .paper { padding: 24px 20px; border-radius: 16px; }
  .sf-doc h2 { font-size: 17.5px; }
}

@media (max-width: 420px) {
  .sf-wrap { width: min(1160px, calc(100% - 32px)); }
  .sf-stats { grid-template-columns: 1fr 1fr; }
  .sf-hero h1 { font-size: 27px; }
  .sf-hero-panel { padding: 22px 18px; }
  .hp-list li { grid-template-columns: 26px 1fr; }
  .hp-list span { display: none; }
  .sf-pillar, .sf-card { padding: 24px 20px; }
  .sf-step { padding: 20px 16px 18px 68px; }
  .sf-step::before { left: 36px; }
  .sf-step .st-dot { left: 16px; width: 40px; height: 40px; }
}

/* ============================ 动效降级 ============================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  /* 选择器要带上 html.sf-reveal 前缀，否则被上面那条更高优先级的规则压住 —— 
     结果就是"用户已声明减少动效，内容却仍在等 JS 才显现"，等于降级失效。 */
  html.sf-reveal .sf-rv { opacity: 1; transform: none; transition: none; }
  .sf-marquee .track { animation: none; }
  .hp-live { animation: none; }
  .sf-btn:hover, .sf-card:hover, .sf-step:hover, .sf-pillar:hover,
  .sf-stats li:hover, .sf-legal-links a:hover { transform: none; }
  .sf-prog { transition: none; }
}