/* ============================================================
   杭州桐讯科技有限公司 · 官网样式 v2
   设计基调：大气 / 层次 / 张力
   - 更深的色彩梯度与节奏感（深绿基底 + 金/青强调）
   - 更大的排版尺度与呼吸感留白
   - 强化视觉张力：斜切色带、流光、玻璃拟态、渐变描边
   ============================================================ */
:root {
  /* 主色：农业绿，做深、做透 */
  --primary: #1a7a3d;
  --primary-dark: #0a4d22;
  --primary-deep: #052e14;
  --primary-light: #2fb865;
  --primary-glow: rgba(47, 184, 101, .55);
  /* 强调：丰收金 + 科技青 */
  --accent: #ffb400;
  --accent-2: #14c8b4;
  --accent-warm: #ff8a3d;
  /* 深色区层级 */
  --dark: #06180d;
  --dark-2: #0b2a17;
  --dark-3: #10391f;
  --text: #253b2c;
  --text-light: #5f6f66;
  --bg-light: #eef7ef;
  --bg-gray: #f6faf6;
  --white: #ffffff;
  --border: #dcebe0;
  --radius: 18px;
  --radius-sm: 10px;
  --radius-lg: 28px;
  --shadow: 0 14px 40px rgba(6, 46, 20, .10);
  --shadow-lg: 0 30px 70px rgba(6, 46, 20, .16);
  --shadow-glow: 0 20px 60px rgba(47, 184, 101, .28);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.75;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid rgba(26,122,61,0.10);
  box-shadow: 0 4px 30px rgba(6,46,20,0.06);
  transition: box-shadow .3s, background .3s;
}
.site-header.scrolled { box-shadow: 0 8px 40px rgba(6,46,20,0.12); background: rgba(255,255,255,0.94); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 78px;
}
.logo { display: flex; align-items: center; gap: 14px; }
.logo-badge {
  width: 48px; height: 48px; border-radius: 14px;
  background: linear-gradient(140deg, var(--primary-light), var(--primary) 55%, var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 24px; font-weight: 800;
  box-shadow: 0 8px 22px rgba(26,122,61,0.35), inset 0 1px 0 rgba(255,255,255,.35);
  position: relative; overflow: hidden;
}
.logo-badge::after {
  content:""; position:absolute; inset:0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.45) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .7s;
}
.logo:hover .logo-badge::after { transform: translateX(120%); }
.logo-text { line-height: 1.25; }
.logo-text strong { font-size: 20px; color: var(--dark); letter-spacing: 1.5px; display: block; font-weight: 800; }
.logo-text span { font-size: 10.5px; color: var(--text-light); letter-spacing: 2.5px; }

.nav { display: flex; gap: 34px; }
.nav a {
  font-size: 15px; color: var(--text); font-weight: 500;
  padding: 8px 2px; position: relative; transition: color .25s;
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2.5px; border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent-2));
  transition: width .28s;
}
.nav a:hover, .nav a.active { color: var(--primary); }
.nav a:hover::after, .nav a.active::after { width: 100%; }

.header-cta { display: flex; align-items: center; gap: 16px; }
.btn-tel {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; padding: 11px 24px; border-radius: 30px;
  font-weight: 600; font-size: 14.5px;
  box-shadow: 0 8px 22px rgba(26,122,61,0.30), inset 0 1px 0 rgba(255,255,255,.3);
  transition: transform .25s, box-shadow .25s;
}
.btn-tel:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(26,122,61,0.42); }

.menu-toggle { display: none; background: none; border: none; font-size: 26px; cursor: pointer; color: var(--dark); }

/* ============ Hero（大气主视觉）============ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex; align-items: center;
  background: linear-gradient(125deg, #eafaf0 0%, #dff3e6 40%, #cfeedd 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  object-fit: cover; width: 100%; height: 100%;
  opacity: .55; transform: scale(1.04);
  animation: heroKen 22s ease-in-out infinite alternate;
}
@keyframes heroKen { from { transform: scale(1.04) translateY(0); } to { transform: scale(1.12) translateY(-14px); } }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(100deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.72) 42%, rgba(240,252,244,.25) 70%, transparent 100%),
    radial-gradient(ellipse at 78% 24%, rgba(20,200,180,.20), transparent 55%);
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 150px; z-index: 1;
  background: linear-gradient(to top, var(--white), transparent);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; padding: 96px 0; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: 30px;
  background: rgba(255,255,255,.7); color: var(--primary);
  border: 1px solid rgba(26,122,61,.18);
  font-size: 13px; font-weight: 600; letter-spacing: 1.5px; margin-bottom: 26px;
  box-shadow: 0 6px 18px rgba(6,46,20,.07);
}
.hero-tag::before { content:""; width:7px; height:7px; border-radius:50%; background: var(--primary-light); box-shadow: 0 0 0 4px rgba(47,184,101,.25); }
.hero h1 {
  font-size: clamp(40px, 5.4vw, 66px); font-weight: 900; line-height: 1.12; color: var(--dark);
  margin-bottom: 24px; letter-spacing: -.5px;
}
.hero h1 em { font-style: normal; color: var(--primary); }
.hero h1 .grad {
  background: linear-gradient(100deg, var(--primary) 10%, var(--accent-2) 55%, var(--accent) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p { font-size: 18px; color: var(--text-light); margin-bottom: 38px; max-width: 580px; line-height: 1.85; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 16px 34px; border-radius: 32px; font-size: 15.5px; font-weight: 600;
  transition: transform .25s, box-shadow .25s, background .25s;
  border: none; cursor: pointer; position: relative; overflow: hidden;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 10%, var(--primary-light) 90%);
  color: #fff; box-shadow: 0 14px 34px rgba(26,122,61,0.34), inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary::after {
  content:""; position:absolute; inset:0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.4) 50%, transparent 70%);
  transform: translateX(-130%); transition: transform .6s;
}
.btn-primary:hover::after { transform: translateX(130%); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 20px 44px rgba(26,122,61,0.44); }
.btn-outline {
  background: rgba(255,255,255,.6); color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-3px); box-shadow: 0 16px 36px rgba(26,122,61,.3); }
.btn-white { background: #fff; color: var(--primary); box-shadow: 0 14px 34px rgba(0,0,0,0.16); }
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 22px 46px rgba(0,0,0,.22); }

.hero-stats {
  position: relative; z-index: 2;
  margin-top: 64px; display: flex; gap: 56px; flex-wrap: wrap;
}
.hero-stats .stat h3 {
  font-size: 38px; font-weight: 900; color: var(--primary-dark); line-height: 1;
  letter-spacing: -1px;
}
.hero-stats .stat p { font-size: 13.5px; color: var(--text-light); margin: 8px 0 0; }
.hero-stats .stat { position: relative; padding-left: 20px; }
.hero-stats .stat::before {
  content:""; position:absolute; left:0; top:4px; bottom:4px; width:3px; border-radius:3px;
  background: linear-gradient(180deg, var(--primary-light), var(--accent));
}

/* ============ Sections ============ */
.section { padding: 104px 0; position: relative; }
.section-dark {
  background:
    radial-gradient(ellipse at 12% 0%, rgba(20,200,180,.14), transparent 45%),
    radial-gradient(ellipse at 92% 100%, rgba(255,180,0,.10), transparent 45%),
    linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 60%, var(--dark-3) 100%);
  color: #fff;
}
.section-light { background: linear-gradient(180deg, var(--bg-light), var(--bg-gray)); }
.section-head { text-align: center; max-width: 780px; margin: 0 auto 64px; }
.section-head .subtitle {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 4px;
  color: var(--primary); text-transform: uppercase; margin-bottom: 14px;
  padding: 6px 16px; border-radius: 20px; background: rgba(26,122,61,.08);
}
.section-head h2 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 900; color: var(--dark); margin-bottom: 16px; letter-spacing: -.5px; line-height: 1.2; }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head .subtitle { color: var(--accent); background: rgba(255,180,0,.12); }
.section-head p { font-size: 16px; color: var(--text-light); line-height: 1.8; }
.section-dark .section-head p { color: rgba(255,255,255,0.72); }

/* ============ Cards 通用 ============ */
.card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  transition: transform .35s cubic-bezier(.2,.7,.2,1), box-shadow .35s;
  border: 1px solid rgba(26,122,61,.06);
  position: relative;
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }

.icon-circle {
  width: 62px; height: 62px; border-radius: 18px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--primary);
  background: linear-gradient(150deg, rgba(47,184,101,.16), rgba(26,122,61,.06));
  border: 1px solid rgba(26,122,61,.12);
}

.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.feature-card { padding: 40px 34px; }
.feature-card .icon-circle { margin-bottom: 22px; width: 72px; height: 72px; font-size: 34px; border-radius: 20px; }
.feature-card h3 { font-size: 19px; color: var(--dark); margin-bottom: 10px; font-weight: 700; }
.feature-card p { font-size: 14.5px; color: var(--text-light); line-height: 1.8; }

.product-card { overflow: hidden; }
.product-card .img-wrap { height: 220px; background: linear-gradient(135deg,#eef7f0,#e0f1e6); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.product-card:hover .img-wrap img { transform: scale(1.08); }
.product-card .p-body { padding: 26px; }
.product-card .p-tag {
  display: inline-block; font-size: 11.5px; color: var(--primary); font-weight: 600;
  background: rgba(26,122,61,0.10); padding: 4px 14px; border-radius: 20px; margin-bottom: 12px;
}
.product-card h3 { font-size: 18px; color: var(--dark); margin-bottom: 8px; font-weight: 700; }
.product-card p { font-size: 13.5px; color: var(--text-light); line-height: 1.8; }
.product-card .p-more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 16px;
  color: var(--primary); font-size: 13.5px; font-weight: 700;
  transition: gap .25s;
}
.product-card:hover .p-more { gap: 12px; }

.sol-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.sol-card img { width: 100%; height: 240px; object-fit: cover; transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.sol-card:hover img { transform: scale(1.09); }
.sol-card .sol-overlay {
  position: absolute; inset: 0; padding: 28px;
  background: linear-gradient(180deg, transparent 28%, rgba(6,24,13,0.92) 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  color: #fff;
}
.sol-card .sol-overlay h3 { font-size: 20px; margin-bottom: 6px; font-weight: 700; }
.sol-card .sol-overlay p { font-size: 13.5px; opacity: .88; }
.sol-card::after {
  content:""; position:absolute; left:0; top:0; height:3px; width:0;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  transition: width .4s;
}
.sol-card:hover::after { width: 100%; }

/* ============ Split ============ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.split img.main {
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  width: 100%; transition: transform .5s;
}
.split img.main:hover { transform: translateY(-6px) scale(1.01); }
.split .checklist { margin-top: 26px; display: grid; gap: 15px; }
.split .checklist li { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; }
.split .checklist .tick {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff; font-size: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 10px rgba(47,184,101,.35);
}

/* ============ Stats band ============ */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.stats-band .item { padding: 26px 12px; border-radius: var(--radius); background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.09); transition: background .3s, border-color .3s; }
.stats-band .item:hover { background: rgba(255,255,255,.09); border-color: rgba(255,180,0,.35); }
.stats-band .item h3 {
  font-size: 46px; font-weight: 900; letter-spacing: -1px;
  background: linear-gradient(100deg, var(--accent), #ffd97a 60%, var(--accent-warm));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stats-band .item p { font-size: 14px; color: rgba(255,255,255,0.72); margin-top: 8px; }

/* ============ Steps ============ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: step; }
.step-item { position: relative; text-align: center; padding: 8px 12px; }
.step-item::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  display: block; width: 60px; height: 60px; line-height: 60px; margin: 0 auto 20px;
  border-radius: 50%; color: #fff;
  font-size: 19px; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  box-shadow: 0 10px 26px rgba(26,122,61,0.34), inset 0 1px 0 rgba(255,255,255,.3);
}
.step-item h4 { font-size: 16.5px; color: var(--dark); margin-bottom: 8px; font-weight: 700; }
.step-item p { font-size: 13.5px; color: var(--text-light); }
.section-dark .step-item h4 { color: #fff; }
.section-dark .step-item p { color: rgba(255,255,255,.7); }

/* ============ CTA ============ */
.cta-band {
  background:
    radial-gradient(ellipse at 88% 15%, rgba(255,180,0,.28), transparent 50%),
    radial-gradient(ellipse at 8% 90%, rgba(20,200,180,.25), transparent 50%),
    linear-gradient(120deg, var(--primary-dark), var(--primary) 55%, var(--primary-light));
  border-radius: var(--radius-lg); padding: 64px 60px;
  display: flex; align-items: center; justify-content: space-between; gap: 36px;
  color: #fff; margin-top: 104px;
  box-shadow: 0 34px 70px rgba(6,46,20,0.34);
  position: relative; overflow: hidden;
}
.cta-band::before {
  content:""; position:absolute; right:-60px; top:-60px; width:280px; height:280px;
  border-radius:50%; border:1px solid rgba(255,255,255,.15);
}
.cta-band::after {
  content:""; position:absolute; right:40px; bottom:-100px; width:220px; height:220px;
  border-radius:50%; border:1px solid rgba(255,255,255,.12);
}
.cta-band h2 { font-size: 30px; margin-bottom: 12px; font-weight: 900; letter-spacing: -.5px; position: relative; z-index: 1; }
.cta-band p { opacity: .9; font-size: 15.5px; position: relative; z-index: 1; }
.cta-band .btn { flex-shrink: 0; position: relative; z-index: 1; }

/* ============ Footer ============ */
.site-footer { background: linear-gradient(180deg, var(--dark-2), var(--dark)); color: rgba(255,255,255,0.72); padding: 76px 0 0; position: relative; }
.site-footer::before {
  content:""; position:absolute; top:0; left:0; right:0; height:1px;
  background: linear-gradient(90deg, transparent, rgba(47,184,101,.5), transparent);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 52px; padding-bottom: 52px; }
.footer-grid h4 { color: #fff; font-size: 16px; margin-bottom: 22px; position: relative; padding-bottom: 12px; font-weight: 700; }
.footer-grid h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 36px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--primary-light), var(--accent)); }
.footer-grid li { margin-bottom: 13px; font-size: 14px; }
.footer-grid li a:hover { color: var(--primary-light); }
.footer-about p { font-size: 14px; line-height: 1.95; margin-top: 18px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .ic { color: var(--primary-light); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12); padding: 24px 0;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 13px;
}

/* ============ Page Hero (内页) ============ */
.page-hero {
  padding: 96px 0 84px;
  background:
    radial-gradient(ellipse at 82% 12%, rgba(20,200,180,.16), transparent 50%),
    linear-gradient(120deg, #eaf8ef, #d9f0e1 55%, #c8e9d5);
  position: relative; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; right: -100px; top: -100px;
  width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(26,122,61,0.14), transparent 70%);
}
.page-hero h1 { font-size: clamp(32px, 4.2vw, 52px); font-weight: 900; color: var(--dark); margin-bottom: 16px; letter-spacing: -.5px; position: relative; z-index: 1; }
.page-hero p { font-size: 17px; color: var(--text-light); max-width: 680px; line-height: 1.8; position: relative; z-index: 1; }
.breadcrumb { font-size: 13.5px; color: var(--text-light); margin-top: 18px; position: relative; z-index: 1; }
.breadcrumb a { color: var(--primary); font-weight: 600; }

/* ============ 产品页 ============ */
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; border-radius: var(--radius-sm); overflow: hidden; }
.spec-table th, .spec-table td { padding: 13px 18px; border: 1px solid var(--border); text-align: left; vertical-align: top; }
.spec-table th { background: var(--bg-light); color: var(--dark); white-space: nowrap; width: 150px; font-weight: 700; }
.spec-table tr:hover td { background: #fbfdfb; }

.category-tabs { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-bottom: 52px; }
.category-tabs button {
  padding: 11px 26px; border-radius: 30px; border: 1.5px solid var(--border);
  background: #fff; font-size: 14px; color: var(--text); cursor: pointer;
  transition: all .25s; font-family: inherit; font-weight: 500;
}
.category-tabs button:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.category-tabs button.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border-color: transparent; box-shadow: 0 10px 24px rgba(26,122,61,.3);
}

/* ============ Contact ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 52px; align-items: start; }
.contact-info .info-item { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--border); }
.contact-info .icon-circle { width: 52px; height: 52px; font-size: 23px; }
.contact-info h4 { color: var(--dark); font-size: 16px; margin-bottom: 4px; font-weight: 700; }
.contact-info p { font-size: 14px; color: var(--text-light); }

.contact-form { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 40px; border: 1px solid rgba(26,122,61,.07); }
.contact-form h3 { font-size: 22px; color: var(--dark); margin-bottom: 24px; font-weight: 800; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--dark); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); font-size: 14px; font-family: inherit;
  transition: border-color .25s, box-shadow .25s; background: var(--bg-gray);
  color: var(--text);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--primary); background: #fff;
  box-shadow: 0 0 0 4px rgba(47,184,101,.14);
}

/* ============ 工具类 ============ */
.text-center { text-align: center; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.tag {
  display: inline-block; font-size: 12.5px; padding: 5px 16px; border-radius: 20px;
  background: rgba(26,122,61,0.10); color: var(--primary); margin: 0 6px 6px 0; font-weight: 600;
}
.mt-20 { margin-top: 20px; } .mt-40 { margin-top: 40px; } .mb-16 { margin-bottom: 16px; }

.tool-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 24px; }
.tool-item { text-align: center; padding: 36px 22px; }
.tool-item .icon-circle { margin: 0 auto 18px; width: 78px; height: 78px; font-size: 36px; border-radius: 24px; }
.tool-item h4 { font-size: 16.5px; color: var(--dark); margin-bottom: 8px; font-weight: 700; }
.tool-item p { font-size: 13.5px; color: var(--text-light); }

/* ============ Timeline ============ */
.timeline { position: relative; padding-left: 36px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(180deg, var(--primary-light), var(--accent-2));
}
.timeline .tl-item { position: relative; padding-bottom: 34px; }
.timeline .tl-item::before {
  content: ""; position: absolute; left: -35px; top: 6px;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--primary); border: 3px solid var(--bg-light);
}
.timeline .tl-item h4 { font-size: 16px; color: var(--dark); }
.timeline .tl-item p { font-size: 14px; color: var(--text-light); margin-top: 4px; }

/* ============ Responsive ============ */
@media (max-width: 1200px) { .container { padding: 0 26px; } .tool-grid { grid-template-columns: repeat(3,1fr); } }
@media (max-width: 1024px) {
  .features-grid, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4, .stats-band, .steps { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .hero-stats { gap: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav {
    position: fixed; top: 78px; right: -100%; flex-direction: column;
    background: #fff; width: 78%; max-width: 340px; height: calc(100vh - 78px);
    padding: 34px; gap: 24px; box-shadow: -10px 0 40px rgba(0,0,0,0.12);
    transition: right .3s; z-index: 99; border-left: 1px solid var(--border);
  }
  .nav.open { right: 0; }
  .nav a { font-size: 17px; }
  .menu-toggle { display: block; }
  .header-cta .btn-tel { display: none; }
  .hero { min-height: auto; padding: 64px 0 48px; }
  .section { padding: 72px 0; }
  .contact-grid, .grid-2, .footer-grid { grid-template-columns: 1fr; }
  .footer-grid { gap: 34px; }
  .cta-band { flex-direction: column; text-align: center; padding: 44px 30px; }
  .hero-stats { gap: 26px; }
  .form-row { grid-template-columns: 1fr; }
  .features-grid, .grid-3, .tool-grid { grid-template-columns: 1fr; }
}

/* 滚动出现动画 */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.visible { opacity: 1; transform: none; }

/* 顶部进度条 */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; z-index: 999;
  background: linear-gradient(90deg, var(--primary), var(--accent-2), var(--accent));
  width: 0; transition: width .1s;
}

/* 返回顶部 */
.back-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 50px; height: 50px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; font-size: 21px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 26px rgba(26,122,61,0.4);
  opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s;
  border: none; cursor: pointer;
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-4px); }

/* ============ 法务页正文 ============ */
.legal-wrap { max-width: 860px; margin: 0 auto; padding: 64px 32px 96px; }
.legal-wrap h1 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 900; color: var(--dark); margin-bottom: 14px; letter-spacing: -.5px; }
.legal-wrap .updated { color: var(--text-light); font-size: 14px; padding-bottom: 22px; border-bottom: 1px solid var(--border); margin-bottom: 34px; }
.legal-wrap h2 {
  font-size: 21px; color: var(--primary-dark); font-weight: 800;
  margin: 38px 0 14px; padding-left: 15px; position: relative;
}
.legal-wrap h2::before {
  content: ""; position: absolute; left: 0; top: 4px; bottom: 4px;
  width: 4px; border-radius: 3px;
  background: linear-gradient(180deg, var(--primary-light), var(--accent));
}
.legal-wrap p, .legal-wrap li { color: var(--text); font-size: 15px; line-height: 1.95; }
.legal-wrap p { margin-bottom: 14px; }
.legal-wrap ul, .legal-wrap ol { margin: 0 0 16px 4px; padding-left: 22px; }
.legal-wrap ul li { list-style: disc; margin-bottom: 9px; }
.legal-wrap ol li { list-style: decimal; margin-bottom: 9px; }
.legal-wrap a { color: var(--primary); font-weight: 600; }
.legal-wrap a:hover { text-decoration: underline; }
.legal-wrap b { color: var(--dark); }