/* ============================================================
   健百生命科学 · 官网样式
   设计语言：生命青绿 × AI科技紫 × 金融专业金
   与 aiailicai.com 同源，独立识别色系
   ============================================================ */

:root {
  /* 生命青绿 · 主色 */
  --life-900: #06302A;
  --life-800: #085041;
  --life-700: #0F6E56;
  --life-600: #1D9E75;
  --life-500: #37B98C;
  --life-300: #7FD4B4;
  --life-100: #E1F5EE;
  --life-50:  #F2FBF7;

  /* 科技紫 · 辅色 */
  --purple-600: #7A5CFF;
  --purple-500: #9A84FF;
  --purple-100: #F0ECFF;

  /* 金融金 · 点缀 */
  --gold-600: #B08A2E;
  --gold-500: #C9A24B;
  --gold-100: #F7EFD8;

  /* 中性 */
  --ink-900: #15203A;
  --ink-700: #3D4B6B;
  --ink-500: #64748F;
  --ink-400: #8A97AD;
  --line: #E4EDE9;
  --line-soft: #F0F5F3;
  --bg: #F6FAF8;
  --white: #FFFFFF;

  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --shadow-sm: 0 2px 10px rgba(6, 48, 42, .05);
  --shadow-md: 0 12px 32px rgba(6, 48, 42, .08);
  --shadow-lg: 0 28px 64px rgba(6, 48, 42, .13);
  --shadow-glow: 0 14px 40px rgba(29, 158, 117, .22);

  --radius: 16px;
  --radius-lg: 24px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font);
  color: var(--ink-900);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.section { padding: 104px 0; position: relative; }

/* ---------- 通用文本 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; letter-spacing: .12em; font-weight: 500;
  color: var(--life-700); text-transform: uppercase;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1.5px; background: var(--life-600);
  display: block;
}
h2.section-title {
  font-size: 38px; line-height: 1.35; font-weight: 600;
  letter-spacing: -.01em; color: var(--ink-900);
  text-wrap: balance;
}
.section-lead {
  margin-top: 18px; font-size: 17px; color: var(--ink-500);
  max-width: 720px; line-height: 1.85;
}
.text-center { text-align: center; }
.text-center .section-lead { margin-left: auto; margin-right: auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 52px; padding: 0 30px; border-radius: 999px;
  font-size: 15px; font-weight: 500; letter-spacing: .01em;
  transition: all .28s var(--ease); white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--life-700), var(--life-600));
  color: #fff; box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 46px rgba(29,158,117,.3); }
.btn-ghost {
  background: rgba(255,255,255,.8); color: var(--ink-900);
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--life-500); color: var(--life-700); background: #fff; }
.btn-sm { height: 42px; padding: 0 22px; font-size: 14px; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 76px; display: flex; align-items: center;
  background: rgba(255,255,255,0);
  transition: background .3s var(--ease), box-shadow .3s var(--ease), height .3s var(--ease);
}
.site-header.scrolled {
  height: 66px; background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line), var(--shadow-sm);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; gap: 24px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark svg { width: 40px; height: 40px; }
.brand-text strong { display: block; font-size: 17px; font-weight: 600; letter-spacing: .01em; line-height: 1.3; }
.brand-text small { display: block; font-size: 11.5px; color: var(--ink-400); letter-spacing: .04em; line-height: 1.4; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 8px 14px; border-radius: 8px; font-size: 14.5px;
  color: var(--ink-700); transition: all .2s var(--ease); position: relative;
}
.nav-link:hover { color: var(--life-700); background: var(--life-50); }
.nav-link.active { color: var(--life-700); font-weight: 500; }
.nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 2px; background: var(--life-600); border-radius: 2px;
}

.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; width: 42px; height: 42px; flex-direction: column; justify-content: center; gap: 5px; align-items: center; border-radius: 10px; }
.nav-toggle span { width: 20px; height: 1.8px; background: var(--ink-900); border-radius: 2px; transition: all .28s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.8px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; padding: 168px 0 96px; overflow: hidden;
  background:
    radial-gradient(760px 460px at 82% 6%, rgba(122,92,255,.10), transparent 62%),
    radial-gradient(680px 520px at 8% 12%, rgba(29,158,117,.12), transparent 60%),
    linear-gradient(180deg, #FBFEFC 0%, var(--bg) 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(15,110,86,.045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(15,110,86,.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(760px 520px at 50% 22%, #000 12%, transparent 76%);
  -webkit-mask-image: radial-gradient(760px 520px at 50% 22%, #000 12%, transparent 76%);
}
.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.06fr .94fr; gap: 64px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  height: 34px; padding: 0 15px 0 12px; border-radius: 999px;
  background: rgba(255,255,255,.86); border: 1px solid var(--life-100);
  font-size: 12.5px; color: var(--life-800); letter-spacing: .02em;
  box-shadow: var(--shadow-sm);
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--life-600); box-shadow: 0 0 0 3px rgba(29,158,117,.16); }

.hero-title {
  margin-top: 26px; font-size: clamp(32px, 3.9vw, 48px); line-height: 1.3;
  font-weight: 600; letter-spacing: -.02em; color: var(--ink-900);
  text-wrap: balance;
}
@media (min-width: 901px) { .hero-title { white-space: nowrap; } }
.hero-title .hl {
  background: linear-gradient(120deg, var(--life-700) 0%, var(--life-600) 46%, var(--purple-600) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin-top: 24px; font-size: 17.5px; line-height: 1.9; color: var(--ink-500); max-width: 560px; }
.hero-sub strong { color: var(--ink-900); font-weight: 500; }
.hero-cta { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 22px; font-size: 13px; color: var(--ink-400); display: flex; align-items: center; gap: 8px; }

/* 阶梯视觉 */
.hero-visual {
  position: relative; padding: 30px 26px 0;
  background: rgba(255,255,255,.72); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
}
.ladder-chart { display: flex; align-items: flex-end; gap: 14px; height: 236px; }
.ladder-col { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; }
.ladder-label { text-align: center; margin-bottom: 10px; }
.ladder-label b { display: block; font-size: 14px; font-weight: 500; color: var(--ink-900); letter-spacing: .01em; }
.ladder-label span { display: block; font-size: 11.5px; color: var(--ink-400); margin-top: 2px; }
.ladder-bar {
  width: 100%; border-radius: 10px 10px 4px 4px;
  transition: height 1s var(--ease);
  position: relative;
}
.ladder-col:nth-child(1) .ladder-bar { height: 74px;  background: linear-gradient(180deg, var(--life-300), var(--life-100)); }
.ladder-col:nth-child(2) .ladder-bar { height: 128px; background: linear-gradient(180deg, var(--life-500), var(--life-300)); }
.ladder-col:nth-child(3) .ladder-bar { height: 186px; background: linear-gradient(180deg, var(--life-700), var(--life-500)); }
.ladder-base { height: 1px; background: var(--line); margin-top: 0; }
.ladder-stage { display: flex; gap: 14px; padding: 12px 0 22px; }
.ladder-stage span { flex: 1; text-align: center; font-size: 11.5px; color: var(--ink-500); letter-spacing: .02em; }
.hero-visual-foot {
  margin: 0 -26px; padding: 14px 26px; border-top: 1px solid var(--line-soft);
  font-size: 12.5px; color: var(--ink-500); display: flex; align-items: center; gap: 8px;
  background: rgba(242,251,247,.7); border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.hero-visual-foot b { color: var(--life-700); font-weight: 500; }

/* 数据条 */
.stat-strip {
  position: relative; z-index: 2; margin-top: 72px;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); overflow: hidden;
}
.stat-item { padding: 28px 30px; border-right: 1px solid var(--line-soft); }
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 32px; font-weight: 600; letter-spacing: -.02em; line-height: 1.2;
  color: var(--life-700); font-variant-numeric: tabular-nums;
}
.stat-num small { font-size: 15px; font-weight: 500; margin-left: 3px; color: var(--life-600); }
.stat-label { margin-top: 6px; font-size: 13px; color: var(--ink-500); line-height: 1.6; }

/* ============================================================
   客户陪跑
   ============================================================ */
.section-clients { padding: 72px 0 88px; }
.clients-title { text-align: center; font-size: 14px; color: var(--ink-400); letter-spacing: .1em; margin-bottom: 36px; }
.client-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.client-card {
  display: flex; align-items: center; gap: 14px;
  padding: 24px 26px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); transition: all .3s var(--ease);
}
.client-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--life-300); }
.client-logo {
  flex: 0 0 46px; width: 46px; height: 46px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 600; color: #fff; letter-spacing: .02em;
}
.client-logo.lg-1 { background: linear-gradient(135deg, #37B98C, #7FD4B4); }
.client-logo.lg-2 { background: linear-gradient(135deg, #1D9E75, #37B98C); }
.client-logo.lg-3 { background: linear-gradient(135deg, #085041, #0F6E56); }
.client-info { flex: 1; min-width: 0; }
.client-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.client-note { margin-top: 18px; text-align: center; font-size: 12.5px; color: var(--ink-400); }
.client-name { font-size: 16.5px; font-weight: 600; color: var(--ink-900); letter-spacing: .01em; }
.client-tag {
  font-size: 11px; padding: 3px 9px; border-radius: 999px;
  background: var(--life-100); color: var(--life-800); white-space: nowrap;
}
.client-tag.own { background: var(--purple-100); color: #4B3AA8; }
.client-meta { margin-top: 10px; font-size: 13px; color: var(--ink-500); }
.client-meta b { color: var(--life-700); font-weight: 500; }

/* ============================================================
   痛点
   ============================================================ */
.section-pain { background: #fff; }
.pain-grid { margin-top: 54px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.pain-card {
  display: flex; gap: 18px; padding: 30px 30px 28px;
  background: var(--life-50); border-radius: var(--radius);
  border: 1px solid #E8F4EE;
}
.pain-idx {
  flex: 0 0 40px; height: 40px; border-radius: 11px;
  background: #fff; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600; color: var(--life-700);
}
.pain-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; letter-spacing: .01em; }
.pain-card p { font-size: 14.5px; color: var(--ink-500); line-height: 1.8; }

/* ============================================================
   增长阶梯
   ============================================================ */
.section-ladder { background: linear-gradient(180deg, var(--bg) 0%, #F1F8F4 100%); }
.ladder-tiers { margin-top: 58px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: end; }
.tier {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px 28px; position: relative; transition: all .3s var(--ease);
}
.tier:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.tier-1 { margin-top: 56px; }
.tier-2 { margin-top: 28px; }
.tier-3 { margin-top: 0; }
.tier-badge {
  display: inline-flex; align-items: center; gap: 7px; font-size: 12px;
  padding: 5px 12px; border-radius: 999px; letter-spacing: .04em;
  background: var(--life-100); color: var(--life-800); margin-bottom: 18px;
}
.tier-3 .tier-badge { background: var(--life-700); color: #fff; }
.tier-2 .tier-badge { background: var(--life-500); color: #fff; }
.tier h3 { font-size: 20px; font-weight: 600; letter-spacing: .01em; }
.tier-scale { margin-top: 4px; font-size: 13px; color: var(--life-700); font-weight: 500; }
.tier ul { margin-top: 18px; display: flex; flex-direction: column; gap: 11px; }
.tier li { font-size: 14px; color: var(--ink-500); line-height: 1.7; padding-left: 18px; position: relative; }
.tier li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 6px; height: 6px; border-radius: 2px; background: var(--life-400, var(--life-500));
}

/* ============================================================
   服务
   ============================================================ */
.section-services { background: #fff; }
.service-grid { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card {
  padding: 36px 30px 32px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background: #fff; transition: all .3s var(--ease);
  position: relative; overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: linear-gradient(90deg, var(--life-600), var(--life-300));
  transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover { box-shadow: var(--shadow-md); border-color: var(--line); transform: translateY(-4px); }
.service-icon {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: var(--life-50); border: 1px solid var(--life-100); margin-bottom: 22px;
}
.service-icon svg { width: 26px; height: 26px; stroke: var(--life-700); fill: none; stroke-width: 1.6; }
.service-card:nth-child(2) .service-icon { background: var(--purple-100); border-color: #E4DEFF; }
.service-card:nth-child(2) .service-icon svg { stroke: var(--purple-600); }
.service-card:nth-child(3) .service-icon { background: var(--gold-100); border-color: #F0E3C2; }
.service-card:nth-child(3) .service-icon svg { stroke: var(--gold-600); }
.service-card h3 { font-size: 19px; font-weight: 600; letter-spacing: .01em; }
.service-card > p { margin-top: 10px; font-size: 14.5px; color: var(--ink-500); line-height: 1.8; }
.service-list { margin-top: 20px; display: flex; flex-direction: column; gap: 9px; }
.service-list li {
  font-size: 13.5px; color: var(--ink-700); padding-left: 20px; position: relative; line-height: 1.7;
}
.service-list li::before {
  content: ""; position: absolute; left: 3px; top: 8px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--life-500);
}

/* ============================================================
   方法论
   ============================================================ */
.section-method { background: var(--bg-deep, #0A2B24); color: #fff; }
.section-method .eyebrow { color: var(--life-300); }
.section-method .eyebrow::before { background: var(--life-400, var(--life-300)); }
.section-method h2.section-title { color: #fff; }
.section-method .section-lead { color: rgba(255,255,255,.66); }
.method-grid { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.method-group {
  padding: 30px 28px; border-radius: var(--radius); background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
}
.method-group-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 20px; }
.method-group-head b { font-size: 15px; font-weight: 500; color: var(--life-300); letter-spacing: .06em; }
.method-group-head span { font-size: 12.5px; color: rgba(255,255,255,.45); }
.method-steps { display: flex; flex-direction: column; gap: 14px; }
.method-step { display: flex; gap: 12px; align-items: flex-start; }
.method-step i {
  flex: 0 0 22px; height: 22px; border-radius: 6px; background: rgba(127,212,180,.16);
  color: var(--life-300); font-size: 11.5px; font-style: normal; display: flex;
  align-items: center; justify-content: center; margin-top: 3px;
}
.method-step div b { display: block; font-size: 14.5px; font-weight: 500; color: #fff; }
.method-step div span { display: block; font-size: 12.5px; color: rgba(255,255,255,.5); line-height: 1.7; margin-top: 2px; }

/* ============================================================
   案例
   ============================================================ */
.section-cases { background: #fff; }
.case-grid { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  display: flex; flex-direction: column; transition: all .3s var(--ease); background: #fff;
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.case-head { padding: 28px 26px 22px; background: linear-gradient(160deg, var(--life-50), #fff); border-bottom: 1px solid var(--line-soft); }
.case-stage { font-size: 11.5px; letter-spacing: .08em; color: var(--life-700); font-weight: 500; }
.case-head h3 { margin-top: 8px; font-size: 19px; font-weight: 600; }
.case-figures { display: flex; gap: 22px; margin-top: 16px; }
.case-figures div b { display: block; font-size: 21px; font-weight: 600; color: var(--life-700); line-height: 1.2; }
.case-figures div span { display: block; font-size: 11.5px; color: var(--ink-400); margin-top: 3px; }
.case-body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; gap: 16px; }
.case-row b { display: block; font-size: 12.5px; color: var(--ink-400); letter-spacing: .04em; margin-bottom: 5px; }
.case-row p { font-size: 14px; color: var(--ink-700); line-height: 1.8; }

/* ============================================================
   为什么是健百
   ============================================================ */
.section-why { background: linear-gradient(180deg, #F1F8F4, var(--bg)); }
.why-grid { margin-top: 56px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.why-item {
  padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  display: flex; gap: 20px;
}
.why-num {
  flex: 0 0 auto; font-size: 13px; font-weight: 600; color: var(--life-600);
  letter-spacing: .04em; padding-top: 2px;
}
.why-item h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.why-item p { font-size: 14.5px; color: var(--ink-500); line-height: 1.8; }

/* ============================================================
   关于 / 生态
   ============================================================ */
.section-about { background: #fff; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.about-text p { font-size: 15.5px; color: var(--ink-500); line-height: 1.95; margin-top: 18px; }
.about-text p strong { color: var(--ink-900); font-weight: 500; }
.eco-list { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.eco-row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 4px; border-bottom: 1px solid var(--line-soft);
}
.eco-row .eco-name { font-size: 15px; font-weight: 500; color: var(--ink-900); }
.eco-row .eco-desc { font-size: 13px; color: var(--ink-400); margin-top: 3px; }
.eco-pill {
  font-size: 11.5px; padding: 4px 11px; border-radius: 999px; white-space: nowrap;
  background: var(--life-50); color: var(--life-800); border: 1px solid var(--life-100);
}

/* ============================================================
   联系
   ============================================================ */
.section-contact { background: var(--bg-deep, #0A2B24); position: relative; overflow: hidden; }
.section-contact::before {
  content: ""; position: absolute; width: 620px; height: 620px; right: -160px; top: -220px;
  background: radial-gradient(circle, rgba(29,158,117,.28), transparent 66%); pointer-events: none;
}
.contact-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-left .eyebrow { color: var(--life-300); }
.contact-left .eyebrow::before { background: var(--life-300); }
.contact-left h2 { font-size: 38px; line-height: 1.38; font-weight: 600; color: #fff; letter-spacing: -.01em; }
.contact-left p { margin-top: 20px; font-size: 15.5px; color: rgba(255,255,255,.62); line-height: 1.9; }
.contact-ways { margin-top: 34px; display: flex; flex-direction: column; gap: 14px; }
.contact-way { display: flex; align-items: center; gap: 13px; font-size: 14.5px; color: rgba(255,255,255,.82); }
.contact-way .ico {
  width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); flex: 0 0 auto;
}
.contact-way svg { width: 17px; height: 17px; stroke: var(--life-300); fill: none; stroke-width: 1.6; }

.contact-card {
  background: #fff; border-radius: var(--radius-lg); padding: 34px 32px;
  box-shadow: var(--shadow-lg);
}
.cc-label {
  display: inline-block; font-size: 11.5px; font-weight: 600; letter-spacing: .14em;
  color: var(--life-800); background: var(--life-100); padding: 5px 11px; border-radius: 999px;
}
.cc-title { font-size: 21px; font-weight: 600; color: var(--ink-900); margin-top: 14px; }
.cc-sub { font-size: 13.5px; color: var(--ink-500); margin-top: 7px; }

.act-btn {
  display: flex; align-items: center; gap: 14px; width: 100%; margin-top: 13px;
  padding: 15px 17px; border-radius: 14px; border: 1px solid var(--line);
  background: var(--life-50); color: var(--ink-900); text-align: left;
  font-family: inherit; cursor: pointer; text-decoration: none;
  transition: all .26s var(--ease);
}
.act-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--life-300); }
.act-ico {
  width: 38px; height: 38px; border-radius: 11px; flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center;
  background: var(--life-100); color: var(--life-800);
}
.act-ico svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.6; }
.act-text b { display: block; font-size: 15px; font-weight: 600; line-height: 1.35; }
.act-text small { display: block; font-size: 11.5px; margin-top: 3px; opacity: .62; }
.act-call {
  background: linear-gradient(135deg, #0F6E56, #1D9E75);
  border-color: transparent; color: #fff;
  box-shadow: 0 8px 20px rgba(15,110,86,.2);
}
.act-call:hover { box-shadow: 0 14px 30px rgba(15,110,86,.3); border-color: transparent; }
.act-call .act-ico { background: rgba(255,255,255,.18); color: #fff; }
.act-copy {
  margin-left: auto; flex: 0 0 auto; font-size: 12px; padding: 5px 11px;
  border-radius: 999px; background: rgba(15,110,86,.1); color: var(--life-800);
  transition: all .25s var(--ease);
}
.act-copy.ok { background: var(--life-500); color: #fff; }

.cc-points { margin-top: 22px; display: flex; flex-direction: column; gap: 9px; }
.cc-points li {
  position: relative; padding-left: 20px; font-size: 13px; line-height: 1.65; color: var(--ink-500);
}
.cc-points li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--life-500); font-weight: 700; font-size: 12.5px;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: #071F1A; color: rgba(255,255,255,.55); padding: 60px 0 34px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.09); }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand strong { font-size: 16px; color: #fff; font-weight: 600; }
.footer-brand small { display: block; font-size: 11.5px; color: rgba(255,255,255,.4); margin-top: 2px; }
.footer-desc { font-size: 13px; line-height: 1.9; max-width: 300px; }
.footer-col h4 { font-size: 13px; color: #fff; font-weight: 500; margin-bottom: 16px; letter-spacing: .04em; }
.footer-col a, .footer-col span { display: block; font-size: 13px; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: var(--life-300); }
.footer-bottom {
  padding-top: 24px; display: flex; justify-content: space-between; gap: 20px;
  font-size: 12px; color: rgba(255,255,255,.35); flex-wrap: wrap;
}

/* ============================================================
   动画
   ============================================================ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(1), .stat-item:nth-child(2) { border-bottom: 1px solid var(--line-soft); }
}
@media (max-width: 900px) {
  .main-nav {
    position: fixed; top: 66px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; padding: 12px 20px 20px;
    box-shadow: var(--shadow-md); border-top: 1px solid var(--line);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: all .28s var(--ease);
  }
  .main-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-link { padding: 13px 8px; border-bottom: 1px solid var(--line-soft); }
  .nav-link.active::after { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .section { padding: 68px 0; }
  h2.section-title, .contact-left h2 { font-size: 29px; }
  .client-grid, .pain-grid, .ladder-tiers, .service-grid, .method-grid, .case-grid, .why-grid { grid-template-columns: 1fr; }
  .ladder-tiers .tier { margin-top: 0 !important; }
  .hero { padding: 132px 0 72px; }
  .hero-title { font-size: 33px; }
  .hero-sub { font-size: 15.5px; }
  .stat-strip { margin-top: 48px; }
  .hero-visual { padding: 22px 16px 0; }
  .hero-visual-foot { margin: 0 -16px; padding: 12px 16px; font-size: 11.5px; }
  .ladder-chart { height: 206px; gap: 10px; }
  .ladder-col:nth-child(1) .ladder-bar { height: 62px; }
  .ladder-col:nth-child(2) .ladder-bar { height: 110px; }
  .ladder-col:nth-child(3) .ladder-bar { height: 162px; }
  .ladder-label b { font-size: 12px; }
  .ladder-label span { font-size: 10px; white-space: nowrap; letter-spacing: -.01em; }
  .ladder-stage { gap: 10px; padding: 10px 0 18px; }
  .ladder-stage span { font-size: 10.5px; }
  .field input, .field select, .field textarea { font-size: 16px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .contact-card { padding: 28px 22px; }
}
@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .hero-title { font-size: 29px; }
  .stat-item { padding: 22px 20px; }
  .stat-num { font-size: 26px; }
  .footer-top { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .header-actions .btn { width: auto; }
}