/* ═══════════ 冰川 ERP 官网 · 全局样式 (零外部依赖, 离线可用) ═══════════ */
:root {
  --navy: #0f2743;
  --navy-2: #16385c;
  --teal: #0d9488;
  --teal-dark: #0b7a70;
  --ink: #1c2b3a;
  --muted: #5b6b7c;
  --line: #e3e8ee;
  --bg: #f6f8fa;
  --white: #ffffff;
  --amber: #b45309;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 39, 67, .08);
  --shadow-lg: 0 24px 60px rgba(15, 39, 67, .14);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink); background: var(--white); line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-dark); }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* ── 语言切换: <html data-lang> 控制两块内容 ── */
.lang-en { display: none !important; }
html[data-lang="en"] .lang-zh { display: none !important; }
html[data-lang="en"] .lang-en { display: block !important; }
span.lang-en, a.lang-en { display: none !important; }
html[data-lang="en"] span.lang-en, html[data-lang="en"] a.lang-en { display: inline !important; }

/* ── 头部 ── */
.site-header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700;
  font-size: 19px; color: var(--navy); }
.brand img { width: 34px; height: 34px; }
.brand small { font-weight: 400; color: var(--muted); font-size: 12px; }
.nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav a { color: var(--ink); font-size: 15px; padding: 8px 13px; border-radius: 8px; }
.nav a:hover { background: var(--bg); color: var(--navy); }
.nav a.active { color: var(--teal); font-weight: 600; }
.nav .cta { background: var(--teal); color: #fff; font-weight: 600; }
.nav .cta:hover { background: var(--teal-dark); }
.lang-toggle { border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
  font-size: 12.5px; color: var(--muted); cursor: pointer; background: #fff; }
.lang-toggle:hover { border-color: var(--teal); color: var(--teal); }
.burger { display: none; margin-left: auto; border: 0; background: none;
  font-size: 24px; cursor: pointer; color: var(--navy); }
@media (max-width: 860px) {
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 12px 20px 18px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .burger { display: block; }
  .lang-toggle { margin-left: auto; }
  .burger { margin-left: 8px; }
}

/* ── Hero ── */
.hero { background: linear-gradient(160deg, var(--navy) 0%, #123154 55%, #0d4f48 100%);
  color: #fff; padding: 96px 0 88px; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: -180px; top: -180px; width: 480px;
  height: 480px; border-radius: 50%; background: rgba(13,148,136,.18); }
.hero h1 { font-size: 46px; line-height: 1.2; letter-spacing: .5px; max-width: 720px; }
.hero p.lead { margin-top: 22px; font-size: 18px; color: #c8d6e5; max-width: 640px; }
.hero .badges { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.hero .badges span { border: 1px solid rgba(255,255,255,.25); border-radius: 999px;
  padding: 6px 14px; font-size: 13px; color: #dbe7f3; }
.hero .actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 13px 28px; border-radius: 10px; font-weight: 600;
  font-size: 15.5px; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-dark); color: #fff; }
.btn-ghost { border-color: rgba(255,255,255,.4); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.08); color: #fff; }
.btn-outline { border-color: var(--teal); color: var(--teal); }
.btn-outline:hover { background: var(--teal); color: #fff; }

/* ── 通用区块 ── */
.section { padding: 84px 0; }
.section.gray { background: var(--bg); }
.section h2 { font-size: 32px; color: var(--navy); letter-spacing: .3px; }
.section .sub { margin-top: 12px; color: var(--muted); font-size: 16.5px; max-width: 720px; }
.grid { display: grid; gap: 22px; margin-top: 44px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; } .section h2 { font-size: 26px; } }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; box-shadow: var(--shadow); }
.card h3 { font-size: 18.5px; color: var(--navy); margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card .icon { width: 46px; height: 46px; border-radius: 12px; background: #e6f6f4;
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.card .icon svg { width: 24px; height: 24px; stroke: var(--teal); }

/* ── 特性清单 ── */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; padding: 42px 0; border-bottom: 1px solid var(--line); }
.feature-row:last-child { border-bottom: 0; }
.feature-row.flip > .f-text { order: 2; }
.feature-row h3 { font-size: 24px; color: var(--navy); margin-bottom: 12px; }
.feature-row p { color: var(--muted); font-size: 15.5px; }
.feature-row ul { margin: 16px 0 0 18px; color: var(--muted); font-size: 15px; }
.feature-row li { margin-bottom: 7px; }
.f-shot { background: var(--bg); border: 1px dashed #c9d4df; border-radius: var(--radius);
  min-height: 260px; display: flex; align-items: center; justify-content: center;
  color: #94a3b8; font-size: 14px; text-align: center; padding: 20px; }
@media (max-width: 800px) { .feature-row { grid-template-columns: 1fr; gap: 20px; }
  .feature-row.flip > .f-text { order: 0; } }

/* ── 价格 ── */
.price-card { text-align: center; padding: 34px 26px; position: relative; }
.price-card.hot { border: 2px solid var(--teal); box-shadow: var(--shadow-lg); }
.price-card .pname { font-size: 17px; font-weight: 700; color: var(--navy); }
.price-card .pnum { font-size: 40px; font-weight: 800; color: var(--navy); margin: 14px 0 2px; }
.price-card .pper { color: var(--muted); font-size: 13.5px; margin-bottom: 18px; }
.price-card ul { list-style: none; margin: 0 0 24px; text-align: left; }
.price-card li { padding: 8px 0 8px 26px; position: relative; color: var(--ink);
  font-size: 14.5px; border-bottom: 1px dashed var(--line); }
.price-card li::before { content: "✓"; position: absolute; left: 2px; color: var(--teal);
  font-weight: 700; }
.ribbon { position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--teal); color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 14px; border-radius: 999px; }
.note-box { margin-top: 34px; background: #fffbeb; border: 1px solid #fde2b8;
  border-radius: 10px; padding: 16px 20px; color: var(--amber); font-size: 14px; }

/* ── 法务页 ── */
.legal h2 { margin-top: 38px; font-size: 21px; color: var(--navy); }
.legal h3 { margin-top: 24px; font-size: 16.5px; color: var(--navy-2); }
.legal p, .legal li { font-size: 15px; color: var(--ink); margin-top: 10px; }
.legal ul, .legal ol { margin-left: 22px; }
.legal table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 14px; }
.legal th, .legal td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.legal th { background: var(--bg); color: var(--navy); }
.updated { color: var(--muted); font-size: 13.5px; margin-top: 6px; }

/* ── CTA 横幅 ── */
.cta-band { background: linear-gradient(120deg, var(--teal) 0%, #0f766e 100%);
  color: #fff; border-radius: 18px; padding: 52px 46px; text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #d7f3ef; margin: 12px auto 26px; max-width: 560px; }

/* ── 页脚 ── */
.site-footer { background: var(--navy); color: #b8c7d6; padding: 56px 0 30px;
  margin-top: 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 34px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.site-footer a { color: #b8c7d6; display: block; padding: 4px 0; }
.site-footer a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff;
  font-weight: 700; font-size: 18px; margin-bottom: 12px; }
.footer-brand img { width: 30px; height: 30px; }
.copyright { border-top: 1px solid rgba(255,255,255,.12); margin-top: 40px;
  padding-top: 22px; font-size: 13px; color: #8fa3b5; line-height: 1.9; }

/* ── 联系页 ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 14px; font-weight: 600;
  color: var(--navy); margin-bottom: 6px; }
.form-field input, .form-field textarea, .form-field select {
  width: 100%; border: 1px solid var(--line); border-radius: 9px; padding: 11px 13px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fff; }
.form-field textarea { min-height: 130px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus { outline: 2px solid rgba(13,148,136,.3);
  border-color: var(--teal); }
.info-line { display: flex; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line);
  font-size: 15px; }
.info-line b { color: var(--navy); min-width: 86px; }

/* ── 步骤条 (about/申请流程复用) ── */
.steps { counter-reset: s; margin-top: 30px; }
.step { position: relative; padding: 0 0 26px 56px; }
.step::before { counter-increment: s; content: counter(s); position: absolute; left: 0;
  top: 2px; width: 36px; height: 36px; border-radius: 50%; background: #e6f6f4;
  color: var(--teal); font-weight: 800; display: flex; align-items: center;
  justify-content: center; font-size: 16px; }
.step::after { content: ""; position: absolute; left: 17px; top: 42px; bottom: 2px;
  width: 2px; background: var(--line); }
.step:last-child::after { display: none; }
.step h4 { color: var(--navy); font-size: 16.5px; margin-bottom: 4px; }
.step p { color: var(--muted); font-size: 14.5px; }

.tag { display: inline-block; background: #e6f6f4; color: var(--teal-dark);
  border-radius: 6px; padding: 2px 9px; font-size: 12.5px; font-weight: 600; }