/* =================================================================
   哈益科技 · 站点设计系统
   数字化赋能创新 · main.css
   ================================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌色 */
  --brand: #1d4ed8;
  --brand-600: #2563eb;
  --brand-500: #3b82f6;
  --brand-400: #60a5fa;
  --brand-dark: #1e3a8a;
  --brand-darker: #172554;

  /* 强调色 */
  --accent: #0ea5e9;
  --accent-600: #0284c7;

  /* 哈公益（暖色） */
  --welfare: #e11d48;
  --welfare-600: #be123c;
  --welfare-50: #fff1f2;

  /* 中性色 */
  --ink-900: #0f172a;
  --ink-800: #1e293b;
  --ink-700: #334155;
  --ink-600: #475569;
  --ink-500: #64748b;
  --ink-400: #94a3b8;
  --line: #e2e8f0;
  --line-soft: #eef2f7;
  --surface: #f8fafc;
  --surface-2: #f1f5f9;
  --white: #ffffff;

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  --mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  /* 圆角 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .04);
  --sh-md: 0 4px 16px rgba(15, 23, 42, .08), 0 1px 4px rgba(15, 23, 42, .04);
  --sh-lg: 0 18px 48px rgba(15, 23, 42, .14), 0 6px 14px rgba(15, 23, 42, .06);
  --sh-brand: 0 14px 30px rgba(29, 78, 216, .30);

  /* 容器 */
  --container: 1200px;
  --container-narrow: 880px;

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: var(--brand); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--brand-600); }
ul, ol { padding-left: 1.2em; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
:focus-visible { outline: 2px solid var(--brand-500); outline-offset: 2px; border-radius: 4px; }

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4 { color: var(--ink-900); line-height: 1.25; font-weight: 800; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }
h4 { font-size: 1.1rem; }
p { color: var(--ink-600); }
.lead { font-size: 1.15rem; color: var(--ink-500); line-height: 1.8; }

/* ---------- 4. 布局工具 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: var(--container-narrow); }
.section { padding: clamp(56px, 9vw, 104px) 0; }
.section-sm { padding: clamp(40px, 6vw, 64px) 0; }
.section-tight { padding-top: 0; }
.bg-surface { background: var(--surface); }
.bg-surface-2 { background: var(--surface-2); }
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: 10px; }
.gap-md { gap: 18px; }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-sm { margin-bottom: 12px; }
.mb-md { margin-bottom: 24px; }
.mb-lg { margin-bottom: 40px; }

/* ---------- 5. 通用组件 ---------- */

/* 区块标题 */
.section-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 56px); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--brand-600);
  background: var(--surface-2);
  padding: 6px 14px; border-radius: var(--r-pill);
  margin-bottom: 16px;
}
.eyebrow.welfare { color: var(--welfare); background: var(--welfare-50); }
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.section-head h2 { margin-bottom: 14px; }
.section-head p { font-size: 1.08rem; color: var(--ink-500); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--r-pill); font-weight: 600; font-size: .97rem;
  transition: all .25s var(--ease); white-space: nowrap; border: 1.5px solid transparent;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--sh-brand); }
.btn-primary:hover { background: var(--brand-600); color: #fff; transform: translateY(-2px); }
.btn-dark { background: var(--ink-900); color: #fff; }
.btn-dark:hover { background: var(--ink-800); color: #fff; transform: translateY(-2px); }
.btn-outline { border-color: var(--line); color: var(--ink-800); background: #fff; }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn-light { background: rgba(255,255,255,.15); color: #fff; border-color: rgba(255,255,255,.35); backdrop-filter: blur(8px); }
.btn-light:hover { background: rgba(255,255,255,.25); color: #fff; transform: translateY(-2px); }
.btn-welfare { background: var(--welfare); color: #fff; box-shadow: 0 14px 30px rgba(225,29,72,.30); }
.btn-welfare:hover { background: var(--welfare-600); color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: .88rem; }
.btn-lg { padding: 16px 34px; font-size: 1.05rem; }

/* 徽章 / 标签 */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: var(--r-pill); font-size: .8rem; font-weight: 600;
  background: var(--surface-2); color: var(--ink-600);
}
.badge-brand { background: rgba(37,99,235,.10); color: var(--brand-600); }
.badge-accent { background: rgba(14,165,233,.12); color: var(--accent-600); }
.badge-welfare { background: var(--welfare-50); color: var(--welfare); }
.badge-success { background: rgba(16,185,129,.12); color: #047857; }

/* 卡片 */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 30px; transition: all .3s var(--ease);
}
.card:hover { box-shadow: var(--sh-lg); border-color: transparent; transform: translateY(-4px); }

/* 首页「关于哈益」简介区块：左文右正方形四宫格 */
.intro-split { display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center; }
.intro-tiles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.intro-tile {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 24px;
  aspect-ratio: 1 / 1;
  transition: all .3s var(--ease);
}
.intro-tile:hover { box-shadow: var(--sh-lg); border-color: transparent; transform: translateY(-4px); }
.intro-tile .icon-circle { margin-bottom: 14px; }
.intro-tile h4 { font-size: 1.05rem; margin-bottom: 6px; }
.intro-tile p { font-size: .9rem; margin: 0; }

/* 图标圆 */
.icon-circle {
  width: 54px; height: 54px; border-radius: var(--r-md);
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(37,99,235,.10); color: var(--brand);
  margin-bottom: 18px;
}
.icon-circle svg { width: 28px; height: 28px; }
.icon-circle.accent { background: rgba(14,165,233,.12); color: var(--accent-600); }
.icon-circle.welfare { background: var(--welfare-50); color: var(--welfare); }
.icon-circle.success { background: rgba(16,185,129,.12); color: #059669; }
.icon-circle.lg { width: 64px; height: 64px; }
.icon-circle.lg svg { width: 32px; height: 32px; }

/* 数字统计 */
.stat-num {
  font-size: clamp(2.2rem, 4.5vw, 3rem); font-weight: 800; color: var(--brand);
  line-height: 1; letter-spacing: -.02em;
}
.stat-num .suffix { font-size: 1.4rem; color: var(--brand-400); }
.stat-label { color: var(--ink-500); font-size: .95rem; margin-top: 8px; }

/* 分割线 */
.hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ---------- 6. 头部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: var(--sh-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }

/* Logo */
.logo { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; color: var(--ink-900); }
.logo:hover { color: var(--ink-900); }
.logo-mark { width: 38px; height: 38px; flex-shrink: 0; border-radius: 50%; object-fit: cover; }
.site-footer .logo-mark { box-shadow: 0 0 0 2px rgba(255,255,255,.15); }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text .cn { font-size: 1.12rem; }
.logo-text .en { font-size: .62rem; font-weight: 600; letter-spacing: .14em; color: var(--ink-400); text-transform: uppercase; }

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px; border-radius: var(--r-sm); font-weight: 500; font-size: .95rem;
  color: var(--ink-700); transition: all .2s var(--ease);
}
.main-nav a:hover { color: var(--brand); background: var(--surface); }
.main-nav a.active { color: var(--brand); background: rgba(37,99,235,.08); font-weight: 600; }
.nav-cta { margin-left: 10px; }

/* 移动端汉堡 */
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: var(--r-sm); align-items: center; justify-content: center; }
.nav-toggle:hover { background: var(--surface); }
.nav-toggle span { position: relative; width: 20px; height: 2px; background: var(--ink-800); border-radius: 2px; transition: .3s var(--ease); }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--ink-800); border-radius: 2px; transition: .3s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
body.nav-open .nav-toggle span { background: transparent; }
body.nav-open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
body.nav-open .nav-toggle span::after { top: 0; transform: rotate(-45deg); }

/* 移动端遮罩 */
.nav-backdrop { display: none; position: fixed; inset: 0; background: rgba(15,23,42,.4); z-index: 98; opacity: 0; transition: opacity .3s; }
body.nav-open .nav-backdrop { display: block; opacity: 1; }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #172554 0%, #1e3a8a 45%, #1d4ed8 100%);
  color: #fff; padding: clamp(80px, 13vw, 150px) 0 clamp(64px, 10vw, 110px);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 18% 22%, rgba(96,165,250,.28), transparent 42%),
    radial-gradient(circle at 82% 78%, rgba(14,165,233,.22), transparent 45%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 40%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000, transparent 75%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2);
  padding: 7px 16px; border-radius: var(--r-pill); font-size: .85rem; font-weight: 600;
  margin-bottom: 26px; backdrop-filter: blur(6px);
}
.hero h1 { color: #fff; margin-bottom: 22px; }
.hero h1 .grad {
  background: linear-gradient(120deg, #93c5fd, #67e8f9);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero .lead { color: rgba(255,255,255,.82); max-width: 620px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: flex; gap: clamp(24px, 5vw, 56px); margin-top: 56px; flex-wrap: wrap;
  padding-top: 36px; border-top: 1px solid rgba(255,255,255,.15);
}
.hero-stat .num { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; color: #fff; line-height: 1; }
.hero-stat .num .s { color: var(--brand-400); }
.hero-stat .lbl { color: rgba(255,255,255,.65); font-size: .9rem; margin-top: 8px; }

/* 页面通用页头 */
.page-hero {
  background: linear-gradient(135deg, #172554, #1e3a8a 60%, #1d4ed8);
  color: #fff; padding: clamp(64px, 9vw, 104px) 0 clamp(48px, 7vw, 72px);
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 85% 15%, rgba(96,165,250,.25), transparent 50%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; margin-bottom: 16px; }
.page-hero p { color: rgba(255,255,255,.8); font-size: 1.12rem; max-width: 640px; }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: .85rem; color: rgba(255,255,255,.55); margin-bottom: 22px; }
.breadcrumb a { color: rgba(255,255,255,.7); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { opacity: .5; }

/* 哈公益页面专用暖色 hero */
.page-hero.welfare {
  background: linear-gradient(135deg, #881337, #be123c 55%, #e11d48);
}
.page-hero.welfare::before {
  background-image: radial-gradient(circle at 85% 15%, rgba(251,207,232,.25), transparent 50%);
}

/* ---------- 8. 能力卡片网格 ---------- */
.feature-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 32px 28px; transition: all .3s var(--ease); height: 100%;
}
.feature-card:hover { box-shadow: var(--sh-lg); border-color: transparent; transform: translateY(-5px); }
.feature-card h3 { font-size: 1.22rem; margin-bottom: 10px; }
.feature-card p { color: var(--ink-500); font-size: .96rem; }
.feature-card .num-tag {
  position: absolute; top: 24px; right: 28px;
  font-size: 2.4rem; font-weight: 800; color: var(--surface-2); line-height: 1;
}

/* 流程步骤 */
.process-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; position: relative; }
.process-step { padding: 0 24px; position: relative; }
.process-step:not(:last-child)::after {
  content: ""; position: absolute; top: 28px; right: -8px; width: 32px; height: 2px;
  background: var(--line);
}
.process-step .step-num {
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 800; margin-bottom: 20px;
  box-shadow: var(--sh-brand);
}
.process-step h3 { margin-bottom: 8px; }

/* ---------- 9. 案例卡片 ---------- */
.case-group { margin-bottom: 56px; }
.case-group:last-of-type { margin-bottom: 0; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  overflow: hidden; transition: all .3s var(--ease); display: flex; flex-direction: column;
}
.case-card:hover { box-shadow: var(--sh-lg); border-color: transparent; transform: translateY(-5px); }
.case-thumb {
  height: 160px; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.case-thumb svg { width: 56px; height: 56px; opacity: .9; }
.case-body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.case-body .case-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.case-body h3 { font-size: 1.12rem; margin-bottom: 6px; }
.case-body .case-sub { color: var(--brand-600); font-size: .88rem; font-weight: 600; margin-bottom: 12px; }
.case-body p { font-size: .92rem; color: var(--ink-500); flex: 1; }
.case-body .case-client { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line-soft); font-size: .85rem; color: var(--ink-400); }
.case-body .case-client strong { color: var(--ink-700); }

/* 案例缩略图背景渐变 */
.thumb-blue { background: linear-gradient(135deg, #1e3a8a, #2563eb); }
.thumb-cyan { background: linear-gradient(135deg, #0c4a6e, #0ea5e9); }
.thumb-violet { background: linear-gradient(135deg, #4c1d95, #7c3aed); }
.thumb-teal { background: linear-gradient(135deg, #134e4a, #0d9488); }
.thumb-amber { background: linear-gradient(135deg, #78350f, #d97706); }
.thumb-rose { background: linear-gradient(135deg, #881337, #e11d48); }
.thumb-indigo { background: linear-gradient(135deg, #1e1b4b, #4f46e5); }
.thumb-emerald { background: linear-gradient(135deg, #064e3b, #059669); }
.thumb-slate { background: linear-gradient(135deg, #1e293b, #475569); }

/* 案例筛选器 */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-btn {
  padding: 9px 20px; border-radius: var(--r-pill); font-size: .92rem; font-weight: 600;
  border: 1.5px solid var(--line); color: var(--ink-600); background: #fff;
  transition: all .2s var(--ease);
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand); }
.filter-btn.active { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ---------- 10. 时间线 ---------- */
.timeline { position: relative; padding-left: 36px; }
.timeline::before {
  content: ""; position: absolute; left: 11px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(var(--brand), var(--brand-400), var(--line));
}
.timeline-item { position: relative; padding-bottom: 38px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -31px; top: 4px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}
.timeline-item .year { font-size: 1.05rem; font-weight: 800; color: var(--brand); margin-bottom: 4px; }
.timeline-item h4 { font-size: 1.05rem; margin-bottom: 6px; }
.timeline-item p { font-size: .94rem; }

/* ---------- 11. 哈公益专区 ---------- */
.welfare-banner {
  background: linear-gradient(135deg, #881337, #be123c 55%, #e11d48);
  border-radius: var(--r-xl); padding: clamp(40px, 6vw, 64px);
  color: #fff; position: relative; overflow: hidden;
}
.welfare-banner::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 80% 20%, rgba(251,207,232,.25), transparent 45%),
                    radial-gradient(circle at 20% 80%, rgba(254,215,170,.15), transparent 45%);
}
.welfare-banner > * { position: relative; z-index: 1; }
.welfare-banner h2 { color: #fff; }
.welfare-banner p { color: rgba(255,255,255,.85); }
.welfare-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 32px 0; }
.welfare-feature { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); border-radius: var(--r-md); padding: 22px; backdrop-filter: blur(6px); }
.welfare-feature svg { width: 28px; height: 28px; margin-bottom: 12px; }
.welfare-feature h4 { color: #fff; margin-bottom: 6px; }
.welfare-feature p { color: rgba(255,255,255,.75); font-size: .9rem; }

/* ---------- 12. CTA 横幅 ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--ink-900), var(--brand-dark));
  border-radius: var(--r-xl); padding: clamp(44px, 6vw, 68px);
  color: #fff; text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 50% 0%, rgba(96,165,250,.25), transparent 55%);
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { color: #fff; margin-bottom: 14px; }
.cta-banner p { color: rgba(255,255,255,.78); max-width: 560px; margin: 0 auto 30px; }

/* ---------- 13. 页脚 ---------- */
.site-footer { background: var(--ink-900); color: rgba(255,255,255,.6); padding: clamp(56px, 7vw, 80px) 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; margin-bottom: 48px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo-text .cn { color: #fff; }
.footer-brand p { color: rgba(255,255,255,.5); font-size: .92rem; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: .95rem; margin-bottom: 18px; }
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { color: rgba(255,255,255,.55); font-size: .92rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
  padding-top: 28px; border-top: 1px solid rgba(255,255,255,.1);
  font-size: .85rem; color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.45); }
.footer-bottom a:hover { color: #fff; }

/* ---------- 14. 招聘 / 内容排版 ---------- */
.job-card { border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; transition: box-shadow .3s; }
.job-card:hover { box-shadow: var(--sh-md); }
.job-header { padding: 28px 30px; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.job-header h3 { font-size: 1.2rem; margin-bottom: 4px; }
.job-header .job-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
.job-toggle { width: 38px; height: 38px; border-radius: 50%; background: var(--surface); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: all .3s var(--ease); }
.job-toggle svg { width: 18px; height: 18px; transition: transform .3s var(--ease); }
.job-card.open .job-toggle { background: var(--brand); color: #fff; }
.job-card.open .job-toggle svg { transform: rotate(180deg); }
.job-body { max-height: 0; overflow: hidden; transition: max-height .4s var(--ease); }
.job-card.open .job-body { max-height: 2400px; }
.job-content { padding: 0 30px 32px; }
.job-content h4 { color: var(--brand); margin: 24px 0 12px; font-size: 1.02rem; }
.job-content h4:first-child { margin-top: 0; }
.job-content ul { color: var(--ink-600); }
.job-content li { margin-bottom: 8px; line-height: 1.7; }

.prose h3 { margin: 32px 0 14px; }
.prose p { margin-bottom: 16px; }
.prose ul { margin: 0 0 20px; }
.prose li { margin-bottom: 10px; color: var(--ink-600); }
.prose strong { color: var(--ink-900); }

/* ---------- 15. 滚动浮现动画 ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-reveal][data-delay="3"] { transition-delay: .24s; }
[data-reveal][data-delay="4"] { transition-delay: .32s; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
  .main-nav {
    position: fixed; top: 70px; left: 0; right: 0; bottom: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; padding: 16px 24px 40px;
    transform: translateX(100%); transition: transform .35s var(--ease);
    overflow-y: auto; border-top: 1px solid var(--line);
    box-shadow: var(--sh-lg);
  }
  body.nav-open .main-nav { transform: none; }
  .main-nav a { padding: 14px 12px; border-radius: var(--r-sm); font-size: 1.05rem; border-bottom: 1px solid var(--line-soft); }
  .main-nav a.active { background: rgba(37,99,235,.06); }
  .main-nav .nav-cta { margin: 16px 0 0; }
  .main-nav .nav-cta .btn { width: 100%; }
  .nav-toggle { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 36px; }
  .process-step:not(:last-child)::after { display: none; }
  .welfare-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stats { gap: 28px; }
  .intro-split { grid-template-columns: 1fr; gap: 36px; }
  .intro-tile { padding: 18px; }
  .intro-tile h4 { font-size: .98rem; }
  .intro-tile p { font-size: .82rem; }
}
@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
  .hero-stats { flex-direction: column; gap: 24px; }
}

/* ---------- 17. 工具类 ---------- */
.list-check { list-style: none; padding: 0; }
.list-check li {
  position: relative; padding-left: 30px; margin-bottom: 12px; color: var(--ink-600);
}
.list-check li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px;
  background: var(--brand); border-radius: 50%;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center / 13px no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center / 13px no-repeat;
}
.list-check.welfare li::before { background: var(--welfare); }

.divider-dot { display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: var(--ink-400); margin: 0 10px; vertical-align: middle; }

.hidden { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; }
}