/* ===================================================================
   cqqzx.com 全站样式 v3
   设计语言：大气时尚蓝 —— 深海军蓝渐变 + 香槟金细节点缀 + 衬线大字号
   =================================================================== */

:root {
  --navy-deep: #060f24;      /* 更深的海军蓝，营造高级感 */
  --navy: #0d1f42;
  --navy-mid: #16326b;
  --blue: #2f6fed;           /* 主强调蓝，比v2更亮更有光泽 */
  --blue-bright: #5b93ff;
  --blue-hover: #1f56d1;
  --gold: #c9a24a;           /* 香槟金，用于细线/小标签，提升"时尚感" */
  --gold-soft: #e3c98a;
  --bg: #ffffff;
  --bg-soft: #f5f7fc;
  --line: #e6eaf2;
  --text-main: #131c2e;
  --text-dim: #62708a;
  --text-on-dark: #eef2fb;
  --text-on-dark-dim: #9fb0cf;

  --font-display: "Source Han Serif SC", "Songti SC", "Noto Serif SC", serif;
  --font-body: "PingFang SC", "Microsoft YaHei", -apple-system, "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", "Consolas", monospace;

  --radius: 4px;
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 顶部导航 ---------- */

.site-header {
  padding: 22px 0;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--navy-deep);
}

.brand .dot { color: var(--gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14px;
  letter-spacing: 0.3px;
}

.nav-links a {
  color: var(--text-dim);
  transition: color 0.2s;
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--navy-deep);
  border-bottom-color: var(--gold);
}

.nav-cta {
  background: var(--navy-deep);
  color: #fff !important;
  padding: 10px 24px;
  border-radius: 999px;
  font-size: 13px !important;
  border-bottom: none !important;
  transition: background 0.25s;
}

.nav-cta:hover { background: var(--blue); }

/* ---------- Hero（深邃渐变 + 金线点缀，大气开场） ---------- */

.hero {
  padding: 140px 0 110px;
  background:
    radial-gradient(ellipse 900px 500px at 85% -10%, rgba(47,111,237,0.35) 0%, transparent 60%),
    radial-gradient(ellipse 700px 500px at -5% 110%, rgba(91,147,255,0.14) 0%, transparent 60%),
    linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 50%, var(--navy-mid) 100%);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, black, transparent 75%);
  pointer-events: none;
}

.hero .container { position: relative; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin-bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
  display: inline-block;
}

h1.hero-title {
  font-family: var(--font-display);
  font-size: 54px;
  line-height: 1.5;
  font-weight: 700;
  max-width: 820px;
  margin: 0 0 28px;
  color: #ffffff;
  letter-spacing: 0.5px;
}

h1.hero-title .accent {
  background: linear-gradient(100deg, var(--blue-bright), var(--gold-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: 16.5px;
  color: var(--text-on-dark-dim);
  max-width: 600px;
  margin-bottom: 42px;
}

.btn-row { display: flex; gap: 18px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 14px;
  letter-spacing: 1px;
  transition: all 0.25s;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 8px 24px rgba(47, 111, 237, 0.35);
}
.btn-primary:hover {
  background: var(--blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(47, 111, 237, 0.45);
}

.btn-ghost {
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
}
.btn-ghost:hover { border-color: var(--gold-soft); color: var(--gold-soft); }

/* ---------- 通用区块 ---------- */

section.block { padding: 96px 0; border-bottom: 1px solid var(--line); }
section.block:nth-of-type(even) { background: var(--bg-soft); }

.block-head { margin-bottom: 52px; max-width: 660px; }
.block-head .eyebrow { color: var(--blue); }
.block-head .eyebrow::before { background: var(--blue); }

h2.block-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--navy-deep);
  margin: 0 0 16px;
  letter-spacing: 0.5px;
}

.block-desc { color: var(--text-dim); font-size: 15px; }

/* ---------- 卡片网格 ---------- */

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 30px;
  position: relative;
  transition: box-shadow 0.25s, transform 0.25s;
}

.card::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.card:hover {
  box-shadow: 0 20px 40px rgba(13, 31, 66, 0.10);
  transform: translateY(-4px);
}
.card:hover::before { transform: scaleX(1); }

.card .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  margin-bottom: 16px;
  display: block;
  letter-spacing: 1px;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--navy-deep);
}

.card p { font-size: 14px; color: var(--text-dim); margin: 0; }

/* ---------- 详情页区块 ---------- */

.detail-section { padding: 64px 0; border-bottom: 1px solid var(--line); }
.detail-section:nth-of-type(even) { background: var(--bg-soft); }

.detail-section h2 {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 700;
  margin-bottom: 22px;
  color: var(--navy-deep);
  letter-spacing: 0.5px;
}

.detail-section p { color: var(--text-dim); font-size: 15px; max-width: 780px; }

.check-list { list-style: none; padding: 0; margin: 26px 0; }
.check-list li {
  padding-left: 30px;
  position: relative;
  margin-bottom: 14px;
  color: var(--text-main);
  font-size: 15px;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 9px; height: 1px;
  background: var(--gold);
}

table.price-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 26px;
  font-size: 14px;
  background: #fff;
}
table.price-table th, table.price-table td {
  border: 1px solid var(--line);
  padding: 15px 18px;
  text-align: left;
}
table.price-table th {
  background: var(--navy-deep);
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* ---------- CTA区块 ---------- */

.cta-band {
  background:
    radial-gradient(ellipse 700px 400px at 50% 0%, rgba(47,111,237,0.25) 0%, transparent 65%),
    linear-gradient(135deg, var(--navy-deep) 0%, var(--navy-mid) 100%);
  color: #fff;
  padding: 84px 0;
  text-align: center;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  margin: 0 0 14px;
  color: #fff;
}

.cta-band p {
  color: var(--text-on-dark-dim);
  margin-bottom: 32px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.cta-band .btn-row { justify-content: center; }

/* ---------- 文章列表 / 博客 ---------- */

.post-list { display: flex; flex-direction: column; }

.post-card {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  transition: opacity 0.2s;
}

.post-card:hover { opacity: 0.85; }

.post-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  padding-top: 4px;
  letter-spacing: 0.5px;
}

.post-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 14px;
}

.post-body h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  color: var(--navy-deep);
  margin: 0 0 12px;
}

.post-body p {
  color: var(--text-dim);
  font-size: 14.5px;
  margin: 0 0 14px;
  max-width: 640px;
}

.post-more {
  font-size: 13px;
  color: var(--blue);
  letter-spacing: 0.5px;
}
.post-more:hover { color: var(--blue-hover); }

.post-card.is-placeholder .post-body h3,
.post-card.is-placeholder .post-body p { color: var(--text-dim); }

/* 文章正文页排版 */
.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 0 96px;
}
.article-body h1 {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--navy-deep);
  margin: 0 0 18px;
  line-height: 1.5;
}
.article-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  margin-bottom: 40px;
  letter-spacing: 0.5px;
}
.article-body h2 {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--navy-deep);
  margin: 40px 0 16px;
}
.article-body p {
  font-size: 15.5px;
  color: var(--text-main);
  margin: 0 0 20px;
}
.article-body ul { margin: 0 0 20px; padding-left: 22px; color: var(--text-main); }

/* ---------- Footer ---------- */

.site-footer {
  padding: 44px 0;
  font-size: 13px;
  background: var(--navy-deep);
  color: var(--text-on-dark-dim);
}
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer a:hover { color: var(--gold-soft); }

/* ---------- 面包屑 ---------- */

.breadcrumb { font-size: 13px; color: var(--text-dim); padding: 20px 0 0; }
.breadcrumb a:hover { color: var(--blue); }

/* ---------- 响应式 ---------- */

@media (max-width: 860px) {
  .nav-links { display: none; }
  h1.hero-title { font-size: 34px; }
  .grid, .grid.cols-2 { grid-template-columns: 1fr; }
  .site-footer .container { flex-direction: column; }
  .hero { padding: 88px 0 64px; }
  section.block, .detail-section { padding: 60px 0; }
  .post-card { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- 占位符高亮 ---------- */
.placeholder {
  background: rgba(201, 162, 74, 0.16);
  outline: 1px dashed var(--gold);
  padding: 0 3px;
  border-radius: 2px;
}

/* ---------- 相关工具推荐卡片 ---------- */
.rel-card {
  display: block;
  background: #fff;
  padding: 16px;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  border: 1px solid #e9ecef;
  transition: all .2s;
}
.rel-card:hover {
  border-color: var(--primary, #2f6fed);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,.06);
}
.rel-card h4 {
  margin: 0 0 6px 0;
  font-size: 14px;
  color: #1a1a2e;
}
.rel-card p {
  margin: 0;
  font-size: 12px;
  color: #888;
}