/* ============================================================
   宁夏至远益信科贸有限公司 · 企业官网
   设计系统 / Design System — 简约大气
   ============================================================ */

:root {
  /* 配色 */
  --ink: #0a1a2f;          /* 主墨色 / 深色背景 */
  --ink-2: #102a43;        /* 次墨色 */
  --brand: #2563eb;        /* 品牌蓝 */
  --brand-dark: #1d4ed8;
  --brand-light: #3b82f6;
  --accent: #14b8a6;       /* 科技青绿（点缀） */
  --accent-2: #38bdf8;     /* 天蓝点缀 */
  --gold: #f5b301;         /* 高级金（强调数据） */

  --bg: #ffffff;
  --bg-soft: #f6f8fc;      /* 浅灰区块 */
  --bg-soft-2: #eef2f9;
  --line: #e4e9f2;         /* 分割线 */

  --text: #182539;         /* 正文深色 */
  --text-soft: #5a6b85;    /* 次要文字 */
  --text-mute: #8a98ad;    /* 弱化文字 */
  --text-on-dark: #eaf1fb;

  /* 排版 */
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* 尺寸 */
  --maxw: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 16px rgba(16, 42, 67, 0.06);
  --shadow: 0 14px 40px rgba(16, 42, 67, 0.10);
  --shadow-lg: 0 24px 60px rgba(16, 42, 67, 0.18);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============ 基础重置 ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.25s var(--ease); }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand-light), var(--brand));
  color: #fff; box-shadow: 0 10px 24px rgba(37, 99, 235, 0.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(37, 99, 235, 0.42); }
.btn-ghost { background: rgba(255,255,255,0.1); color: #fff; border: 1px solid rgba(255,255,255,0.35); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,0.18); }
.btn-outline { background: #fff; color: var(--brand); border: 1.5px solid var(--line); }
.btn-outline:hover { border-color: var(--brand); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-2); transform: translateY(-2px); }

/* ============ 导航 ============ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.header.scrolled {
  background: rgba(255,255,255,0.86);
  backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 1px 0 var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 18px; color: #fff; transition: color 0.3s; }
.header.scrolled .brand { color: var(--ink); }
.brand .logo-mark {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, var(--brand-light), var(--accent));
  display: grid; place-items: center; color: #fff; font-size: 17px; font-weight: 800;
  box-shadow: 0 6px 16px rgba(37,99,235,0.35);
}
.brand small { display: block; font-size: 10.5px; font-weight: 500; letter-spacing: 1.5px; opacity: 0.7; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 9px 16px; border-radius: 999px; font-size: 15px; font-weight: 500;
  color: rgba(255,255,255,0.9); transition: all 0.25s var(--ease);
}
.header.scrolled .nav-links a { color: var(--text-soft); }
.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.12); }
.header.scrolled .nav-links a:hover { color: var(--brand); background: var(--bg-soft); }
.nav-links a.active { color: #fff; background: linear-gradient(135deg, var(--brand-light), var(--brand)); }
.header.scrolled .nav-links a.active { color: #fff; }
.nav-cta { margin-left: 8px; }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: 0.3s; }
.header.scrolled .hamburger span { background: var(--ink); }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(56,189,248,0.20), transparent 60%),
              radial-gradient(900px 500px at 10% 10%, rgba(20,184,166,0.16), transparent 55%),
              linear-gradient(160deg, #0a1a2f 0%, #102a43 55%, #0d2138 100%);
  color: #fff; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000, transparent 78%);
  mask-image: radial-gradient(circle at 50% 40%, #000, transparent 78%);
}
.hero .container { position: relative; z-index: 2; padding-top: 96px; padding-bottom: 64px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 16px; border-radius: 999px; font-size: 13.5px; font-weight: 500;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.16);
  color: var(--text-on-dark); margin-bottom: 26px;
}
.hero-tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 0 4px rgba(56,189,248,0.22); }
.hero h1 { color: #fff; font-size: clamp(34px, 5.2vw, 60px); font-weight: 800; letter-spacing: -0.02em; }
.hero h1 .grad {
  background: linear-gradient(120deg, #7dd3fc, #5eead4 60%, #93c5fd);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { color: rgba(234,241,251,0.82); font-size: clamp(16px, 1.6vw, 19px); max-width: 620px; margin: 22px 0 36px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 38px; margin-top: 56px; flex-wrap: wrap; }
.hero-meta .item { }
.hero-meta .num { font-size: 30px; font-weight: 800; color: #fff; letter-spacing: -0.01em; }
.hero-meta .num .u { font-size: 16px; color: var(--accent-2); margin-left: 2px; }
.hero-meta .lbl { font-size: 13.5px; color: rgba(234,241,251,0.62); margin-top: 2px; }

/* ============ 区块通用 ============ */
section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  color: var(--brand); text-transform: uppercase; margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); }
.section-head p { color: var(--text-soft); margin-top: 14px; font-size: 16.5px; }

/* ============ 业务概览卡片 ============ */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.biz-card {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 38px 32px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
  overflow: hidden;
}
.biz-card::after {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%;
  background: linear-gradient(90deg, var(--brand-light), var(--accent));
  transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease);
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.biz-card:hover::after { transform: scaleX(1); }
.biz-ico {
  width: 58px; height: 58px; border-radius: 15px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(20,184,166,0.12));
  color: var(--brand); margin-bottom: 22px;
}
.biz-ico svg { width: 30px; height: 30px; }
.biz-card h3 { font-size: 21px; margin-bottom: 12px; }
.biz-card p { color: var(--text-soft); font-size: 15px; }
.biz-card .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; color: var(--brand); font-weight: 600; font-size: 14.5px; }
.biz-card .more svg { width: 16px; height: 16px; transition: transform 0.25s var(--ease); }
.biz-card:hover .more svg { transform: translateX(4px); }

/* ============ 优势 ============ */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feat-item { text-align: center; padding: 16px 10px; }
.feat-item .fi-num { font-size: 14px; font-weight: 800; color: var(--accent); letter-spacing: 1px; }
.feat-item .fi-ico { width: 50px; height: 50px; margin: 14px auto 14px; border-radius: 14px; display: grid; place-items: center; background: var(--bg-soft-2); color: var(--brand); }
.feat-item .fi-ico svg { width: 26px; height: 26px; }
.feat-item h4 { font-size: 17px; margin-bottom: 8px; }
.feat-item p { color: var(--text-soft); font-size: 14px; }

/* ============ 数据带 ============ */
.stats { background: linear-gradient(135deg, var(--ink), var(--ink-2)); color: #fff; }
.stats .section-head h2 { color: #fff; }
.stats .section-head .eyebrow { color: var(--accent-2); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; padding: 20px; }
.stat .big { font-size: clamp(34px, 4vw, 50px); font-weight: 800; color: #fff; letter-spacing: -0.02em; }
.stat .big .unit { font-size: 22px; color: var(--gold); margin-left: 2px; }
.stat .cap { color: rgba(234,241,251,0.7); margin-top: 6px; font-size: 14.5px; }

/* ============ CTA 区 ============ */
.cta-band { background: linear-gradient(135deg, var(--brand), var(--brand-dark)); color: #fff; border-radius: 0; position: relative; overflow: hidden; }
.cta-band::before { content:""; position:absolute; inset:0; background-image: radial-gradient(600px 300px at 90% 0%, rgba(255,255,255,0.18), transparent 60%), radial-gradient(500px 260px at 0% 100%, rgba(20,184,166,0.30), transparent 60%); }
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 760px; margin: 0 auto; }
.cta-inner h2 { color: #fff; font-size: clamp(26px, 3.2vw, 36px); }
.cta-inner p { color: rgba(255,255,255,0.88); margin: 16px 0 30px; font-size: 16.5px; }
.cta-inner .hero-actions { justify-content: center; }

/* ============ 关于我们 ============ */
.about-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.about-grid.reverse { grid-template-columns: 1fr 1.05fr; }
.about-text h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 18px; }
.about-text p { color: var(--text-soft); margin-bottom: 16px; }
.about-visual {
  border-radius: var(--radius); min-height: 360px; padding: 36px;
  background: linear-gradient(150deg, #0a1a2f, #143a5a); color: #fff;
  display: flex; flex-direction: column; justify-content: center; gap: 18px; position: relative; overflow: hidden;
  box-shadow: var(--shadow);
}
.about-visual::before { content:""; position:absolute; inset:0; background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px); background-size: 40px 40px; opacity: 0.5; }
.about-visual .av-row { position: relative; display: flex; align-items: center; gap: 14px; }
.about-visual .av-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: rgba(56,189,248,0.18); color: var(--accent-2); flex-shrink: 0; }
.about-visual .av-ico svg { width: 24px; height: 24px; }
.about-visual h4 { color: #fff; font-size: 17px; }
.about-visual p { color: rgba(234,241,251,0.75); font-size: 14px; margin: 0; }

/* 时间线 */
.timeline { position: relative; max-width: 880px; margin: 0 auto; padding-left: 8px; }
.timeline::before { content:""; position:absolute; left: 18px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--brand-light), var(--accent)); }
.tl-item { position: relative; padding: 0 0 34px 56px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item .tl-dot { position: absolute; left: 10px; top: 4px; width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 4px solid var(--brand); box-shadow: 0 0 0 4px var(--bg-soft); }
.tl-item .tl-year { font-weight: 800; color: var(--brand); font-size: 15px; }
.tl-item h4 { font-size: 18px; margin: 4px 0 6px; }
.tl-item p { color: var(--text-soft); font-size: 14.5px; }

/* 价值卡片 */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.value-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-sm); }
.value-card .vc-ico { width: 50px; height: 50px; border-radius: 13px; background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(20,184,166,0.12)); color: var(--brand); display: grid; place-items: center; margin-bottom: 18px; }
.value-card h3 { font-size: 19px; margin-bottom: 10px; }
.value-card p { color: var(--text-soft); font-size: 14.5px; }

/* ============ 产品服务 ============ */
.svc-block { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-bottom: 30px; }
.svc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 30px; position: relative; transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.svc-card.feature { background: linear-gradient(150deg, var(--ink), var(--ink-2)); color: #fff; border-color: transparent; grid-column: span 1; }
.svc-card.feature h3, .svc-card.feature p { color: #fff; }
.svc-card.feature .svc-list li { color: rgba(234,241,251,0.82); }
.svc-card.feature .svc-list li::before { background: var(--accent-2); }
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.svc-ico { width: 56px; height: 56px; border-radius: 15px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(20,184,166,0.12)); color: var(--brand); margin-bottom: 20px; }
.svc-card.feature .svc-ico { background: rgba(56,189,248,0.18); color: var(--accent-2); }
.svc-ico svg { width: 30px; height: 30px; }
.svc-card h3 { font-size: 21px; margin-bottom: 10px; }
.svc-card .tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1px; color: var(--accent); background: rgba(20,184,166,0.10); padding: 4px 10px; border-radius: 999px; margin-bottom: 14px; }
.svc-card p.desc { color: var(--text-soft); font-size: 14.5px; margin-bottom: 18px; }
.svc-card.feature p.desc { color: rgba(234,241,251,0.8); }
.svc-list { margin-top: 6px; }
.svc-list li { position: relative; padding-left: 22px; font-size: 14.5px; color: var(--text-soft); margin-bottom: 10px; }
.svc-list li::before { content:""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; border-radius: 50%; background: var(--brand); }
.svc-price { margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--line); display: flex; align-items: baseline; gap: 8px; }
.svc-card.feature .svc-price { border-top-color: rgba(255,255,255,0.15); }
.svc-price .p { font-size: 24px; font-weight: 800; color: var(--ink); }
.svc-card.feature .svc-price .p { color: #fff; }
.svc-price .pu { font-size: 13px; color: var(--text-mute); }

/* 流程 */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.flow-step { position: relative; padding-top: 16px; }
.flow-step .fs-num { font-size: 40px; font-weight: 800; color: var(--bg-soft-2); line-height: 1; }
.flow-step h4 { font-size: 17px; margin: 10px 0 8px; }
.flow-step p { color: var(--text-soft); font-size: 14px; }
.flow-step::after { content:""; position: absolute; right: -11px; top: 34px; width: 22px; height: 2px; background: var(--line); }
.flow-step:last-child::after { display: none; }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 14px; overflow: hidden; background: #fff; }
.faq-q { width: 100%; text-align: left; padding: 18px 22px; font-size: 16px; font-weight: 600; color: var(--ink); display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-q .ico { transition: transform 0.3s var(--ease); color: var(--brand); flex-shrink: 0; }
.faq-item.open .faq-q .ico { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s var(--ease); }
.faq-a p { padding: 0 22px 18px; color: var(--text-soft); font-size: 14.5px; }

/* ============ 联系我们 ============ */
.contact-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 48px; align-items: start; }
.contact-info h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 14px; }
.contact-info > p { color: var(--text-soft); margin-bottom: 28px; }
.ci-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.ci-item:last-of-type { border-bottom: none; }
.ci-ico { width: 46px; height: 46px; border-radius: 12px; flex-shrink: 0; background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(20,184,166,0.12)); color: var(--brand); display: grid; place-items: center; }
.ci-ico svg { width: 22px; height: 22px; }
.ci-item .ci-label { font-size: 13px; color: var(--text-mute); }
.ci-item .ci-val { font-size: 16px; font-weight: 600; color: var(--ink); }
.ci-item .ci-val a:hover { color: var(--brand); }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.field label .req { color: #ef4444; margin-left: 2px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 15px; color: var(--text); background: var(--bg-soft);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--brand); background: #fff; box-shadow: 0 0 0 4px rgba(37,99,235,0.10);
}
.field textarea { resize: vertical; min-height: 120px; }
.field .err { color: #ef4444; font-size: 12.5px; margin-top: 6px; display: none; }
.field.invalid input, .field.invalid textarea, .field.invalid select { border-color: #ef4444; }
.field.invalid .err { display: block; }
.form-note { font-size: 13px; color: var(--text-mute); margin-top: 6px; }
.form-success { display: none; padding: 16px; border-radius: var(--radius-sm); background: rgba(20,184,166,0.12); color: #0f766e; font-weight: 600; font-size: 14.5px; margin-bottom: 18px; }

.map-wrap { margin-top: 56px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); height: 320px; background: linear-gradient(135deg, #eef2f9, #dfe7f3); position: relative; }
.map-wrap .map-pin { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-100%); text-align: center; }
.map-wrap .map-pin .pin { width: 30px; height: 30px; border-radius: 50% 50% 50% 0; background: var(--brand); transform: rotate(-45deg); margin: 0 auto; box-shadow: 0 8px 18px rgba(37,99,235,0.4); }
.map-wrap .map-pin .pin::after { content:""; position:absolute; left:50%; top:50%; transform: translate(-50%,-50%); width:10px; height:10px; background:#fff; border-radius:50%; }
.map-wrap .map-label { margin-top: 14px; font-size: 13px; color: var(--text-soft); background: #fff; padding: 4px 12px; border-radius: 999px; box-shadow: var(--shadow-sm); display: inline-block; }

/* ============ 页脚 ============ */
.footer { background: var(--ink); color: rgba(234,241,251,0.75); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; }
.footer .brand { color: #fff; margin-bottom: 16px; }
.footer-about p { font-size: 14px; color: rgba(234,241,251,0.62); max-width: 320px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-links a { display: block; font-size: 14px; color: rgba(234,241,251,0.7); padding: 6px 0; }
.footer-links a:hover { color: #fff; }
.footer-contact p { font-size: 14px; color: rgba(234,241,251,0.7); margin-bottom: 8px; display: flex; gap: 8px; align-items: center; }
.footer-contact svg { width: 16px; height: 16px; color: var(--accent-2); flex-shrink: 0; }
.footer-bottom { margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,0.10); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: rgba(234,241,251,0.5); }
.footer-beian { margin-top: 14px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.08); text-align: center; font-size: 12px; color: rgba(234,241,251,0.45); display: flex; justify-content: center; flex-wrap: wrap; gap: 6px 14px; align-items: center; }
.footer-beian a { color: rgba(234,241,251,0.6); text-decoration: none; transition: color .2s; }
.footer-beian a:hover { color: rgba(234,241,251,0.95); }
.footer-beian .beian-police { display: inline-flex; align-items: center; gap: 5px; }
.footer-beian .beian-police img { width: 16px; height: 16px; display: block; }

/* ============ 返回顶部 ============ */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-light), var(--brand)); color: #fff;
  display: grid; place-items: center; box-shadow: var(--shadow);
  opacity: 0; transform: translateY(16px); pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.to-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover { transform: translateY(-3px); }

/* ============ 动画揭示 ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

/* ============ 响应式 ============ */
@media (max-width: 980px) {
  .biz-grid, .svc-block, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .about-grid.reverse, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .flow-step::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  section { padding: 70px 0; }
  .nav-links { position: fixed; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 20px 22px; box-shadow: var(--shadow); transform: translateY(-120%); transition: transform 0.35s var(--ease); }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { color: var(--text-soft); padding: 13px 16px; border-radius: var(--radius-sm); }
  .nav-links a:hover { background: var(--bg-soft); color: var(--brand); }
  .nav-links a.active { color: #fff; }
  .nav-cta { margin: 8px 0 0; }
  .nav-cta .btn { width: 100%; justify-content: center; }
  .hamburger { display: flex; }
  .header.scrolled .nav-links { top: 72px; }
  .biz-grid, .svc-block, .value-grid, .feat-grid, .stats-grid, .flow { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-meta { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

/* ============ 地址卡片（联系页，真实可导航） ============ */
.addr-card { margin-top: 56px; border-radius: var(--radius); border: 1px solid var(--line); background: linear-gradient(135deg, #f5f8fd, #eef2f9); padding: 32px; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.addr-card .addr-ico { width: 52px; height: 52px; border-radius: 14px; background: var(--brand); color: #fff; display: grid; place-items: center; flex: none; }
.addr-card .addr-text { flex: 1; min-width: 240px; }
.addr-card .addr-text .lbl { font-size: 12.5px; color: var(--text-soft); letter-spacing: 0.04em; margin-bottom: 4px; }
.addr-card .addr-text .val { font-size: 16px; font-weight: 700; color: var(--ink); }
.addr-card .addr-actions { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 720px) {
  .addr-card { padding: 24px; }
  .addr-card .addr-actions { width: 100%; }
  .addr-card .addr-actions .btn { flex: 1; justify-content: center; }
}

/* ============ 隐私政策页 ============ */
.legal-doc { max-width: 860px; margin: 0 auto; }
.legal-doc h2 { font-size: 22px; margin: 42px 0 14px; color: var(--ink); }
.legal-doc h3 { font-size: 17px; margin: 26px 0 10px; color: var(--ink); }
.legal-doc p, .legal-doc li { font-size: 15px; line-height: 1.9; color: var(--text-soft); }
.legal-doc ul { padding-left: 22px; margin: 8px 0; }
.legal-doc .meta { font-size: 13.5px; color: var(--text-soft); background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 18px; margin-top: 22px; }

/* ============ GEO 内容块（定义 / 对比表 / 步骤 / 日期 / 事实卡） ============ */
.def-block { border-left: 4px solid var(--brand); background: var(--bg-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 18px 24px; margin: 14px 0 10px; }
.def-block p { font-size: 15.5px; line-height: 1.9; color: var(--text); margin: 0; }
.def-block .def-term { font-weight: 700; color: var(--ink); }

.geo-table { width: 100%; border-collapse: collapse; margin: 18px 0 6px; font-size: 14.5px; background: #fff; }
.geo-table th, .geo-table td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; line-height: 1.7; }
.geo-table th { background: var(--bg-soft-2); color: var(--ink); font-weight: 700; white-space: nowrap; }
.geo-table td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }
.table-wrap { overflow-x: auto; }

.steps-ol { counter-reset: step; list-style: none; padding: 0; margin: 16px 0; }
.steps-ol li { position: relative; padding: 0 0 22px 52px; }
.steps-ol li::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0; width: 36px; height: 36px; border-radius: 10px; background: var(--brand); color: #fff; font-weight: 700; font-size: 14px; display: grid; place-items: center; }
.steps-ol li::after { content: ""; position: absolute; left: 17px; top: 40px; bottom: 4px; width: 2px; background: var(--line); }
.steps-ol li:last-child::after { display: none; }
.steps-ol li:last-child { padding-bottom: 0; }
.steps-ol h4 { margin: 4px 0 4px; font-size: 15.5px; color: var(--ink); }
.steps-ol p { margin: 0; font-size: 14.5px; color: var(--text-soft); line-height: 1.8; }

.geo-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 16px 0; padding: 0; list-style: none; }
.geo-facts li { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; background: #fff; font-size: 14px; color: var(--text-soft); line-height: 1.7; }
.geo-facts b { display: block; font-size: 15.5px; color: var(--ink); margin-bottom: 2px; }

.meta-date { font-size: 13px; color: var(--text-mute); margin-top: 10px; }
.meta-date time { font-weight: 600; color: var(--text-soft); }
.prose-block p { font-size: 15px; line-height: 1.95; color: var(--text-soft); margin: 0 0 12px; }
.prose-block strong { color: var(--ink); }
@media (max-width: 720px) {
  .geo-table { font-size: 13.5px; }
  .geo-table th, .geo-table td { padding: 10px; }
}