/* ============================================================
   标手Top · 设计系统 (Design System)
   主色: 凡达恩深蓝灰 #3B414D | 强调: 凡达恩青 #0AC2FF / 亮青 #95EAF2
   规范依据: 凡达恩 FDE LOGO 配色
   ============================================================ */

:root {
  --navy-900: #242A36;
  --navy-800: #2F3642;
  --navy:     #3B414D;   /* 主色 / 凡达恩深蓝灰 */
  --navy-600: #4E5562;
  --blue:     #0AC2FF;   /* 凡达恩青强调 */
  --blue-600: #0891B2;
  --cyan:     #95EAF2;   /* 亮青高光 */
  --amber:    #F59E0B;   /* 风险/警示 */
  --red:      #DC2626;
  --green:    #059669;

  --ink:      #3B414D;   /* 正文主色 */
  --ink-soft: #5A6B85;   /* 次级文字 */
  --ink-mute: #8A99B0;
  --line:     #E3E8F0;
  --bg:       #FFFFFF;
  --bg-soft:  #F5F7FA;
  --bg-navy:  #242A36;

  --radius:   14px;
  --radius-sm:10px;
  --shadow:   0 6px 24px rgba(59,65,77,.08);
  --shadow-lg:0 16px 48px rgba(59,65,77,.14);
  --maxw:     1160px;

  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior:smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 84px 0; }
.section-sm { padding: 60px 0; }

/* ---------------- 文字工具 ---------------- */
/* 眉标：胶囊 badge 风格（浅色背景区） */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 15px; letter-spacing: .08em; font-weight: 700;
  color: var(--navy-900);
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(59,65,77,.12);
  border-radius: 999px;
  padding: 7px 18px 7px 14px;
  margin-bottom: 16px;
  box-shadow:
    0 4px 16px rgba(59,65,77,.12),
    0 8px 28px rgba(59,65,77,.08),
    0 0 0 1px rgba(255,255,255,.7) inset,
    0 0 24px rgba(10,194,255,.16);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.eyebrow::before {
  content: "";
  width: 3px; height: 14px; border-radius: 2px;
  background: var(--blue);
  box-shadow: 0 0 10px rgba(10,194,255,.7);
}

.eyebrow::after {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(149,234,242,.9);
}

/* 眉标：深色背景区版本（与截图一致） */
.hero .eyebrow,
.eyebrow-dark {
  color: #cfe0ff;
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.18);
  box-shadow:
    0 4px 18px rgba(0,0,0,.25),
    0 8px 32px rgba(0,0,0,.18),
    0 0 0 1px rgba(255,255,255,.1) inset,
    0 0 28px rgba(10,194,255,.22);
}

.hero .eyebrow::before,
.eyebrow-dark::before { background: var(--cyan); box-shadow: 0 0 12px rgba(6,230,255,.85); }

.hero .eyebrow::after,
.eyebrow-dark::after { background: #fff; box-shadow: 0 0 10px rgba(255,255,255,.9); }
.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800; line-height: 1.25; color: var(--navy);
  letter-spacing: -.01em;
}
.section-lead {
  margin-top: 14px; font-size: 17px; color: var(--ink-soft);
  max-width: 640px; line-height: 1.8;
}
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.muted { color: var(--ink-soft); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 700; font-size: 15px;
  cursor: pointer; border: 2px solid transparent; transition: .2s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(10,194,255,.28); }
.btn-primary:hover { background: var(--blue-600); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(10,194,255,.36); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-outline { background: #fff; color: var(--navy); border-color: var(--line); }
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.btn-light { background: #fff; color: var(--navy); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-block { width: 100%; }
.btn-lg { padding: 16px 34px; font-size: 16px; }

/* ---------------- 导航栏 ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--navy); }
.logo .mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: #02060b;
  display: grid; place-items: center;
  overflow: hidden;
  border: 1px solid rgba(10,194,255,.25);
  box-shadow: 0 0 14px rgba(10,194,255,.28);
}
.logo .mark img { width: 100%; height: 100%; object-fit: cover; display: block; }
.logo .mark span { display: none; }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  padding: 8px 14px; border-radius: 8px; font-size: 15px; color: var(--ink-soft); font-weight: 500;
  transition: .15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--navy); background: var(--bg-soft); }
.nav-cta { margin-left: 8px; }
.nav-toggle { display: none; background: none; border: 0; font-size: 26px; cursor: pointer; color: var(--navy); margin-left: auto; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 500px at 78% -10%, rgba(10,194,255,.35), transparent 60%),
    radial-gradient(700px 500px at 10% 110%, rgba(149,234,242,.22), transparent 55%),
    linear-gradient(160deg, var(--navy-900), var(--navy) 70%);
  color: #fff;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 30%, #000, transparent 75%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; padding: 86px 0 92px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 15px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); color: #cfe0ff;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.hero h1 { font-size: clamp(34px, 5vw, 54px); font-weight: 800; line-height: 1.18; letter-spacing: -.02em; margin: 22px 0 18px; }
.hero h1 .grad { background: linear-gradient(90deg, #7eb6ff, #5fe3f0); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.sub { font-size: 18px; color: #c5d3ec; max-width: 520px; line-height: 1.8; }
.hero-cta { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 26px; margin-top: 36px; color: #aebfe0; font-size: 14px; flex-wrap: wrap; }
.hero-trust b { color: #fff; font-size: 22px; display: block; font-weight: 800; }

/* Hero 视觉：数据卡 */
.hero-visual { position: relative; }
.data-card {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px; padding: 22px; backdrop-filter: blur(6px);
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
}
.data-card + .data-card { margin-top: 16px; }
.data-card .row { display: flex; align-items: center; justify-content: space-between; }
.data-card .label { color: #aebfe0; font-size: 13px; }
.data-card .value { font-size: 30px; font-weight: 800; color: #fff; }
.data-card .value.up { color: #5fe3f0; }
.bar { height: 8px; border-radius: 999px; background: rgba(255,255,255,.12); margin-top: 12px; overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--blue), var(--cyan)); }
.data-card .meta { color: #8da3cb; font-size: 12px; margin-top: 8px; }

/* ---------------- 卡片网格 ---------------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }

.icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(10,194,255,.12), rgba(149,234,242,.12));
  color: var(--blue); margin-bottom: 18px;
}
.icon svg { width: 24px; height: 24px; }
.card h3 { font-size: 19px; color: var(--navy); font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--ink-soft); font-size: 15px; line-height: 1.75; }
.card .more { display: inline-block; margin-top: 16px; color: var(--blue); font-weight: 700; font-size: 14px; }
.card .more::after { content: " →"; }

/* ---------------- 数据背书条 ---------------- */
.stats-bar {
  background: var(--navy); color: #fff; border-radius: 18px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 38px 30px; text-align: center;
}
.stats-bar .num { font-size: 38px; font-weight: 800; letter-spacing: -.02em; }
.stats-bar .num .u { color: var(--cyan); }
.stats-bar .cap { color: #aebfe0; font-size: 14px; margin-top: 4px; }

/* ---------------- 服务产品 ---------------- */
.price-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: 18px;
  padding: 32px 28px; display: flex; flex-direction: column;
}
.price-card.featured { border-color: var(--blue); box-shadow: var(--shadow-lg); }
.price-card .tag {
  position: absolute; top: -13px; left: 28px; background: var(--blue); color: #fff;
  font-size: 12px; font-weight: 700; padding: 5px 14px; border-radius: 999px;
}
.price-card .name { font-size: 18px; font-weight: 800; color: var(--navy); }
.price-card .role { font-size: 13px; color: var(--ink-mute); margin: 4px 0 18px; }
.price-card .price { font-size: 34px; font-weight: 800; color: var(--navy); letter-spacing: -.02em; }
.price-card .price small { font-size: 15px; color: var(--ink-soft); font-weight: 500; }
.price-card ul { margin: 20px 0 26px; display: flex; flex-direction: column; gap: 11px; flex: 1; }
.price-card li { display: flex; gap: 10px; font-size: 14.5px; color: var(--ink-soft); }
.price-card li svg { width: 18px; height: 18px; color: var(--green); flex: none; margin-top: 3px; }

/* ---------------- 区块底色 ---------------- */
.bg-soft { background: var(--bg-soft); }
.bg-navy { background: linear-gradient(160deg, var(--navy-900), var(--navy)); color: #fff; }
.bg-navy .section-title { color: #fff; }
.bg-navy .section-lead { color: #b9c8e6; }

/* ---------------- 案例/信任 ---------------- */
.quote {
  background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--blue);
  border-radius: var(--radius); padding: 26px 28px; font-size: 16px; color: var(--ink);
}
.quote .who { margin-top: 16px; font-size: 14px; color: var(--ink-soft); }

/* ---------------- CTA 大区 ---------------- */
.cta-final {
  position: relative; overflow: hidden; border-radius: 22px;
  background: linear-gradient(135deg, var(--navy-800), var(--blue-600));
  color: #fff; text-align: center; padding: 64px 28px;
}
.cta-final::after {
  content: ""; position: absolute; width: 360px; height: 360px; right: -80px; top: -120px;
  background: radial-gradient(circle, rgba(6,182,212,.5), transparent 65%);
}
.cta-final h2 { font-size: clamp(26px, 4vw, 38px); font-weight: 800; position: relative; }
.cta-final p { color: #d6e2fb; margin: 14px 0 28px; position: relative; font-size: 17px; }

/* ---------------- 页脚 ---------------- */
.footer { background: var(--navy-900); color: #aebfe0; padding: 60px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; }
.footer .logo { color: #fff; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer a { display: block; padding: 6px 0; font-size: 14px; transition: .15s; }
.footer a:hover { color: #fff; }
.footer .desc { font-size: 14px; line-height: 1.8; margin: 14px 0; max-width: 280px; }
.footer .qr { width: 120px; height: 120px; background: #fff; border-radius: 10px; padding: 8px; }
.footer .contact-line { font-size: 14px; margin: 6px 0; }
.footer .contact-line b { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px; font-size: 13px; color: #7e8fae; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------------- 表单 ---------------- */
.form-wrap { max-width: 560px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 7px; }
.field label .req { color: var(--red); }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fff; transition: .15s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(10,194,255,.12); }
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 13px; color: var(--ink-mute); margin-top: 14px; }
.form-ok { display: none; background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; padding: 16px 20px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: 15px; }
.form-ok.show { display: block; }

/* ---------------- 诊断页 ---------------- */
.diag-hero { background: linear-gradient(160deg, var(--navy-900), var(--navy)); color: #fff; padding: 64px 0 56px; }
.diag-hero h1 { font-size: clamp(28px,4vw,40px); font-weight: 800; }
.diag-hero p { color: #b9c8e6; margin-top: 12px; font-size: 17px; }
.progress { height: 6px; background: rgba(255,255,255,.15); border-radius: 999px; margin: 30px 0 8px; overflow: hidden; }
.progress > i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--blue), var(--cyan)); transition: .3s; }
.progress-cap { font-size: 13px; color: #aebfe0; }

.question { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; margin-bottom: 18px; }
.question h3 { font-size: 18px; color: var(--navy); font-weight: 700; margin-bottom: 16px; display: flex; gap: 10px; }
.question h3 .qnum { color: var(--blue); flex: none; }
.opts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.opt {
  display: flex; align-items: center; gap: 10px; padding: 13px 16px; border: 1.5px solid var(--line);
  border-radius: var(--radius-sm); cursor: pointer; transition: .15s; font-size: 15px;
}
.opt:hover { border-color: var(--blue); }
.opt input { accent-color: var(--blue); width: 18px; height: 18px; }
.opt.sel { border-color: var(--blue); background: rgba(10,194,255,.06); }

.report { background: #fff; border-radius: 18px; padding: 0; overflow: hidden; box-shadow: var(--shadow-lg); }
.report-head { background: linear-gradient(135deg, var(--navy-800), var(--blue-600)); color: #fff; padding: 30px 32px; }
.report-head .score { font-size: 58px; font-weight: 800; line-height: 1; }
.report-head .score.warn { color: var(--amber); }
.report-head .score.bad { color: #ff9a9a; }
.report-body { padding: 28px 32px; }
.report-body h4 { color: var(--navy); font-size: 17px; margin: 18px 0 12px; }
.risk-item { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.risk-item .ic { flex: none; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: 14px; font-weight: 800; }
.risk-item.high .ic { background: #fde8e8; color: var(--red); }
.risk-item.mid .ic { background: #fef3e2; color: var(--amber); }
.risk-item.low .ic { background: #e7f6ef; color: var(--green); }
.risk-item .txt { font-size: 14.5px; color: var(--ink-soft); }
.risk-item .txt b { color: var(--ink); }

/* ---------------- 资源中心 ---------------- */
.post-card { display: flex; flex-direction: column; }
.post-card .cat { font-size: 13px; font-weight: 700; color: var(--navy); border-left: 3px solid var(--blue); padding-left: 9px; letter-spacing: .02em; }
.post-card .date { font-size: 13px; color: var(--ink-mute); margin-left: auto; }
.post-card h3 { font-size: 19px; color: var(--navy); font-weight: 700; margin: 12px 0 10px; line-height: 1.4; }
.post-card .excerpt { color: var(--ink-soft); font-size: 14.5px; flex: 1; }
.post-card .foot { margin-top: 18px; font-size: 13px; color: var(--ink-mute); display: flex; justify-content: space-between; align-items: center; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0; }
.tag { font-size: 12px; padding: 4px 12px; border-radius: 999px; background: var(--bg-soft); color: var(--ink-soft); }

/* 文章详情 */
.article { max-width: 760px; margin: 0 auto; }
.article .cat { display: inline-block; border-left: 3px solid var(--blue); padding-left: 9px; margin: 4px 0 2px; letter-spacing: .02em; }
.article h1 { font-size: clamp(28px,4vw,40px); color: var(--navy); font-weight: 800; line-height: 1.3; }
.article .meta { color: var(--ink-mute); font-size: 14px; margin: 16px 0 30px; display: flex; gap: 16px; flex-wrap: wrap; }
.article h2 { font-size: 24px; color: var(--navy); margin: 36px 0 14px; font-weight: 800; }
.article h3 { font-size: 19px; color: var(--navy); margin: 26px 0 10px; font-weight: 700; }
.article p { color: #344563; margin: 14px 0; font-size: 16.5px; line-height: 1.9; }
.article ul.square { list-style: square; padding-left: 22px; margin: 14px 0; }
.article ul.square li { margin: 8px 0; color: #344563; }
.article blockquote { border-left: 4px solid var(--blue); background: var(--bg-soft); padding: 16px 20px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 20px 0; color: var(--ink-soft); }

/* 标讯列表 */
.bid-item { display: grid; grid-template-columns: 1fr auto; gap: 8px 20px; padding: 22px 24px; border: 1px solid var(--line); border-radius: var(--radius); transition: .15s; }
.bid-item:hover { border-color: var(--blue); box-shadow: var(--shadow); }
.bid-item .t { font-size: 17px; font-weight: 700; color: var(--navy); }
.bid-item .meta { grid-column: 1 / -1; display: flex; gap: 18px; flex-wrap: wrap; font-size: 13.5px; color: var(--ink-soft); margin-top: 4px; }
.bid-item .meta b { color: var(--ink); font-weight: 600; }
.bid-item .amt { font-weight: 800; color: var(--blue); white-space: nowrap; }

/* 面包屑 */
.crumb { font-size: 14px; color: var(--ink-mute); margin: 22px 0 0; }
.crumb a:hover { color: var(--blue); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; padding: 56px 0 64px; }
  .hero-visual { display: none; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; gap: 26px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .section { padding: 56px 0; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; background: #fff; border-bottom: 1px solid var(--line); padding: 12px 24px; gap: 4px; box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 8px; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .opts { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .bid-item { grid-template-columns: 1fr; }
  .bid-item .amt { white-space: normal; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
}