/* ==========================================================
   新钢采 · 设计系统 v2
   深墨蓝（钢韵）× 金属金（品质）
   ========================================================== */

:root {
  /* 主色：深墨蓝 —— 钢的沉稳底色 */
  --ink: #0a1c30;
  --ink-2: #0e2740;
  --navy: #133b5e;
  --blue: #1c5b96;
  --blue-2: #2f83c9;

  /* 辅色：金属金 —— 点睛的高端感 */
  --gold: #c8922e;
  --gold-2: #e8b95a;
  --gold-soft: #f2d9a0;
  --gold-dim: rgba(200,146,46,.14);

  /* 中性 */
  --bg: #f2f5f9;
  --bg-2: #e8eef5;
  --surface: #ffffff;
  --surface-2: #fbfcfe;
  --line: #e2e9f2;
  --line-2: #d3dde9;
  --text: #23303f;
  --text-2: #3d4e61;
  --muted: #7c8fa3;
  --green: #12905f;

  /* 阴影层级 */
  --shadow-xs: 0 1px 2px rgba(10,28,48,.05);
  --shadow-sm: 0 2px 8px rgba(10,28,48,.06);
  --shadow: 0 6px 20px rgba(10,28,48,.07);
  --shadow-lg: 0 16px 44px rgba(10,28,48,.11);
  --shadow-gold: 0 8px 26px rgba(200,146,46,.22);

  /* 圆角 */
  --r-sm: 10px;
  --r: 14px;
  --r-lg: 18px;
  --r-xl: 24px;

  /* 字体 */
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
::selection { background: var(--gold-soft); color: var(--ink); }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* ==========================================================
   顶部导航
   ========================================================== */
header.site {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(255,255,255,.9) inset, 0 2px 14px rgba(10,28,48,.045);
}
/* 顶部金属描边 */
header.site::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--ink) 0%, var(--navy) 28%, var(--gold) 58%, var(--gold-2) 78%, var(--ink) 100%);
}
/* 滚动后收紧高度、加深投影 */
header.site.is-scrolled { box-shadow: 0 2px 18px rgba(10,28,48,.1), 0 1px 0 rgba(255,255,255,.9) inset; }
header.site.is-scrolled .wrap { height: 64px; }
header.site .wrap { transition: height .28s cubic-bezier(.4,0,.2,1); }

header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.logo {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(140deg, #1d4f7e 0%, var(--ink) 60%, #071626 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 20px;
  box-shadow: 0 4px 14px rgba(10,28,48,.28), 0 0 0 1px rgba(255,255,255,.1) inset;
  position: relative; overflow: hidden;
}
.logo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(150deg, rgba(255,255,255,.26) 0%, transparent 42%);
}
.brand .name { font-size: 23px; font-weight: 800; color: var(--ink); letter-spacing: 2.5px; }
.brand .name b { color: var(--gold); font-weight: 800; }

nav.main { display: flex; align-items: center; gap: 2px; }
nav.main a {
  position: relative;
  font-size: 14.5px; font-weight: 600; color: var(--text-2);
  padding: 9px 14px; border-radius: 9px;
  transition: color .2s, background .2s;
}
nav.main a:hover { color: var(--ink); background: rgba(28,91,150,.06); }
nav.main a.active { color: var(--ink); }
/* 下划线指示器 */
nav.main a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2.5px;
  border-radius: 2px; background: linear-gradient(90deg, var(--gold), var(--gold-2));
}
nav.main a.cta {
  margin-left: 10px; padding: 10px 20px;
  background: linear-gradient(135deg, var(--gold-2) 0%, var(--gold) 100%);
  color: #1a1206; border-radius: 10px; font-weight: 700;
  box-shadow: 0 4px 14px rgba(200,146,46,.3);
  transition: transform .2s, box-shadow .2s, filter .2s;
}
nav.main a.cta::after { display: none; }
nav.main a.cta:hover {
  color: #fff; transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(10,28,48,.3);
}

/* ==========================================================
   首页 Hero
   ========================================================== */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 480px at 88% -8%, rgba(200,146,46,.20), transparent 62%),
    radial-gradient(760px 420px at 4% 108%, rgba(47,131,201,.26), transparent 60%),
    linear-gradient(128deg, #071626 0%, #0e2c4a 42%, #16456f 74%, #1d5a8e 100%);
  color: #fff;
}
/* 精工网格纹理 */
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(circle at 30% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 30% 40%, #000 0%, transparent 78%);
}
/* 金色光晕 */
.hero::after {
  content: ""; position: absolute; top: -160px; right: -110px;
  width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,185,90,.26), transparent 64%);
}
.hero .wrap { position: relative; z-index: 2; padding: 62px 24px 54px; }

.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12px; font-weight: 700; letter-spacing: 3.4px;
  color: var(--gold-soft); margin-bottom: 18px;
  padding: 7px 15px 7px 12px;
  border: 1px solid rgba(232,185,90,.34);
  border-radius: 999px;
  background: rgba(232,185,90,.09);
  backdrop-filter: blur(6px);
}
.hero .eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold-2); box-shadow: 0 0 0 4px rgba(232,185,90,.18);
}
.hero h1 {
  font-size: 37px; font-weight: 800; letter-spacing: .3px; line-height: 1.34;
  max-width: 940px; text-shadow: 0 2px 20px rgba(0,0,0,.22);
}
.hero h1 .accent {
  background: linear-gradient(100deg, var(--gold-soft) 0%, var(--gold-2) 46%, #fbe6bb 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: var(--gold-2);
}
.hero p {
  color: rgba(226,238,250,.9); margin-top: 16px; font-size: 15.5px;
  max-width: 820px; line-height: 1.9;
}
.hero p a { color: var(--gold-soft); font-weight: 600; border-bottom: 1px solid rgba(232,185,90,.4); transition: color .2s, border-color .2s; }
.hero p a:hover { color: #fff; border-bottom-color: #fff; }

.hero .chips { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.hero .chips span, .hero .chips a {
  font-size: 13px; font-weight: 500; color: #d5e6f6;
  background: rgba(255,255,255,.075);
  border: 1px solid rgba(255,255,255,.16);
  padding: 7px 15px; border-radius: 999px;
  backdrop-filter: blur(4px);
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.hero .chips a:hover {
  background: rgba(232,185,90,.16); border-color: rgba(232,185,90,.5);
  color: #fff; transform: translateY(-1px);
}

/* ==========================================================
   首页数据条
   ========================================================== */
.stats-strip {
  position: relative; z-index: 3;
  background: linear-gradient(180deg, #16456f 0%, #0e2a48 42%, #0a1c30 100%);
  color: #fff;
}
.stats-strip::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232,185,90,.55), transparent);
}
.stats-strip .wrap {
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: 30px 24px;
}
.stat-item {
  position: relative;
  display: flex; flex-direction: column; gap: 3px;
  padding: 2px 26px;
  border-right: 1px solid rgba(255,255,255,.11);
}
.stat-item:first-child { padding-left: 0; }
.stat-item:last-child { border-right: 0; }
.stat-item .num {
  font-size: 30px; font-weight: 800; line-height: 1.15; letter-spacing: .5px;
  background: linear-gradient(120deg, #fff 10%, var(--gold-soft) 90%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-item .num i { font-size: 15px; font-style: normal; font-weight: 700; -webkit-text-fill-color: var(--gold-2); margin-left: 2px; }
.stat-item .lbl { font-size: 13px; color: rgba(210,228,244,.72); letter-spacing: .4px; }

/* ==========================================================
   内页子头部
   ========================================================== */
.subhero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(760px 340px at 84% -20%, rgba(200,146,46,.18), transparent 62%),
    linear-gradient(126deg, #071626 0%, #0e2c4a 48%, #16456f 100%);
  color: #fff;
}
.subhero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(90deg, transparent, #000 60%);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 60%);
}
.subhero .wrap { padding: 34px 24px 32px; position: relative; z-index: 2; }
.breadcrumb { font-size: 13px; color: rgba(200,218,236,.78); margin-bottom: 13px; }
.breadcrumb a { color: var(--gold-soft); font-weight: 600; }
.breadcrumb a:hover { color: #fff; }
.subhero h1 {
  font-size: 29px; font-weight: 800; letter-spacing: .4px;
  text-shadow: 0 2px 14px rgba(0,0,0,.2);
}
.subhero p { color: rgba(216,232,247,.86); margin-top: 11px; font-size: 14.5px; max-width: 880px; line-height: 1.85; }
.subhero p .kwlink { color: var(--gold-soft); border-bottom-color: rgba(232,185,90,.45); }
.subhero p .kwlink:hover { color: #fff; border-bottom-color: #fff; }
.kwcloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 18px; }
.kwcloud a {
  font-size: 13px; color: #cfe2f5;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.15);
  padding: 6px 14px; border-radius: 999px;
  transition: background .2s, color .2s, border-color .2s;
}
.kwcloud a:hover { background: rgba(232,185,90,.15); border-color: rgba(232,185,90,.45); color: #fff; }
.page { padding: 40px 0 12px; }

/* ==========================================================
   区块标题
   ========================================================== */
.sec-title {
  display: flex; align-items: center; gap: 12px;
  font-size: 19px; font-weight: 800; color: var(--ink); letter-spacing: .3px;
}
.sec-title::before {
  content: ""; width: 5px; height: 20px; border-radius: 3px;
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  box-shadow: 0 0 0 3px var(--gold-dim);
}
.sec-title .more {
  margin-left: auto; font-size: 13px; font-weight: 600; color: var(--blue);
  padding: 5px 13px; border-radius: 999px;
  background: rgba(28,91,150,.06);
  border: 1px solid transparent;
  transition: background .2s, border-color .2s, color .2s;
}
.sec-title .more:hover { background: rgba(28,91,150,.11); border-color: rgba(28,91,150,.2); color: var(--ink); }
.sec-sub { font-size: 13.5px; color: var(--muted); margin-top: 7px; }
.sec-pad { padding: 44px 0 8px; }

/* ==========================================================
   顶部广告排
   ========================================================== */
.top-ads { padding: 38px 0 8px; }
.top-ads .sec-title { margin-bottom: 20px; }
.ad-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ad-row .ad-box { min-height: 200px; }

/* ==========================================================
   广告位通用
   ========================================================== */
.ad-box {
  border: 1.5px dashed var(--line-2);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
  padding: 20px 16px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; color: var(--text); position: relative; min-height: 200px;
  transition: border-color .25s, box-shadow .25s, transform .25s;
  overflow: hidden;
}
.ad-box::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-2), transparent);
  opacity: 0; transition: opacity .25s;
}
.ad-box:hover {
  border-color: var(--gold); border-style: solid;
  box-shadow: var(--shadow-lg); transform: translateY(-3px);
}
.ad-box:hover::before { opacity: 1; }
.ad-box .ad-tag {
  position: absolute; right: 13px; bottom: 11px;
  font-size: 11px; font-weight: 700; letter-spacing: 2px;
  color: rgba(124,143,163,.5);
  pointer-events: none;
}
.ad-box h4 { font-size: 14.5px; color: var(--navy); margin-bottom: 5px; font-weight: 700; }
.ad-box p { font-size: 12px; color: var(--text-2); max-width: 240px; line-height: 1.6; }
.ad-box.brand .ad-tag { color: rgba(200,146,46,.55); }
.ad-box.ad-err {
  border-style: solid; border-color: var(--gold);
  background: linear-gradient(180deg, #fffdf7, #fdf5e6); color: #7d6224;
}
.ad-box.ad-err h4 { color: #96690f; }
.ad-box.ad-err p { color: #8a7434; max-width: 320px; }
.ad-box.mini { min-height: 124px; padding: 14px; }

/* ==========================================================
   主体两栏
   ========================================================== */
.layout { display: flex; gap: 32px; padding: 34px 0 56px; align-items: flex-start; }
.main { width: 800px; flex: none; }
.aside { width: 330px; flex: none; align-self: stretch; display: flex; flex-direction: column; }

/* ==========================================================
   资讯列表
   ========================================================== */
.main .sec-title { margin-bottom: 20px; }
.news-group { margin-bottom: 30px; }
.news-group:last-child { margin-bottom: 0; }
.news-cat {
  display: flex; align-items: center; gap: 9px;
  font-size: 14.5px; font-weight: 700; color: var(--ink);
  margin-bottom: 16px; letter-spacing: .3px;
}
.news-cat::before {
  content: ""; width: 4px; height: 15px; border-radius: 2px;
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
}
.news-cat .cnt { font-size: 12px; font-weight: 600; color: var(--muted); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.article {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-xs);
  transition: border-color .22s, box-shadow .22s, transform .22s;
}
.article:hover {
  border-color: rgba(200,146,46,.45);
  box-shadow: var(--shadow); transform: translateY(-2px);
}
.article h3 { font-size: 15.5px; font-weight: 600; color: var(--text); line-height: 1.55; letter-spacing: .2px; }
.article h3 a:hover { color: var(--blue); }
.article p.ex {
  color: var(--text-2); font-size: 13.5px; margin-top: 8px; line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.article .more {
  display: inline-block; margin-top: 10px;
  color: var(--muted); font-size: 12.5px; font-weight: 600;
  transition: color .2s;
}
.article .more:hover { color: var(--gold); }

/* ==========================================================
   右侧竖排广告
   ========================================================== */
.aside .sec-title { margin-bottom: 20px; }
.aside .ad-box { margin-bottom: 18px; flex: 1 1 0; min-height: 152px; }
.aside .ad-box:last-child { margin-bottom: 0; }

/* ==========================================================
   JS 动态广告位
   ========================================================== */
.ad-slot { display: block; }
.ad-slot--aside { display: flex; flex-direction: column; }
.ad-box a.ad-box, a.ad-box {
  text-decoration: none; color: inherit; display: block; cursor: pointer;
}
.ad-box img.ad-img {
  width: 100%; height: 154px; object-fit: cover;
  border-radius: var(--r-sm); margin-bottom: 11px; display: block;
  box-shadow: var(--shadow-xs);
}
.ad-box .ad-custom { font-size: 12px; color: #6a4e12; line-height: 1.6; margin: 6px 0; }
.ad-box .ad-custom img { max-width: 100%; height: auto; }
.ad-box .ad-link {
  display: inline-block; margin-top: 9px;
  font-size: 12px; font-weight: 700; color: var(--gold);
  text-decoration: none;
}
.ad-box .ad-link:hover { text-decoration: underline; }

/* ==========================================================
   品类卡片
   ========================================================== */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cat-card {
  position: relative; overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 20px 18px 16px;
  box-shadow: var(--shadow-xs);
  transition: border-color .22s, box-shadow .22s, transform .22s;
}
.cat-card::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-2));
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}
.cat-card:hover {
  border-color: rgba(200,146,46,.4);
  box-shadow: var(--shadow); transform: translateY(-3px);
}
.cat-card:hover::after { transform: scaleX(1); }
.cat-card .ico {
  width: 44px; height: 44px; border-radius: 13px;
  background: linear-gradient(140deg, #245f92 0%, var(--ink) 100%);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 19px; font-weight: 800; margin-bottom: 13px;
  box-shadow: 0 5px 14px rgba(10,28,48,.2);
}
.cat-card h3 { font-size: 16px; font-weight: 800; color: var(--ink); letter-spacing: .2px; }
.cat-card h3 a:hover { color: var(--blue); }
.cat-card p { font-size: 13px; color: var(--text-2); margin-top: 7px; line-height: 1.7; min-height: 66px; }
.cat-card .tags { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.cat-card .tags span {
  font-size: 11px; color: var(--text-2);
  background: var(--bg); border: 1px solid var(--line);
  padding: 3px 10px; border-radius: 999px;
  transition: background .2s, color .2s, border-color .2s;
}
.cat-card:hover .tags span { border-color: rgba(200,146,46,.3); }

/* ==========================================================
   FAQ
   ========================================================== */
.faq-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-xs);
  transition: border-color .22s, box-shadow .22s, transform .22s;
}
.faq-item:hover {
  border-color: rgba(28,91,150,.3);
  box-shadow: var(--shadow); transform: translateY(-2px);
}
.faq-item .q { font-size: 15px; font-weight: 700; color: var(--ink); display: flex; gap: 10px; line-height: 1.5; }
.faq-item .q .badge {
  flex: none; width: 22px; height: 22px; border-radius: 7px;
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  color: #fff; font-size: 12px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 8px rgba(200,146,46,.32);
}
.faq-item .a { font-size: 13.5px; color: var(--text-2); margin-top: 10px; line-height: 1.75; }

/* ==========================================================
   选购指南
   ========================================================== */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.guide-card {
  position: relative; overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px 20px 18px;
  box-shadow: var(--shadow-xs);
  transition: border-color .22s, box-shadow .22s, transform .22s;
}
.guide-card:hover {
  border-color: rgba(200,146,46,.4);
  box-shadow: var(--shadow); transform: translateY(-3px);
}
.guide-card .gnum {
  font-size: 13px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  width: 28px; height: 28px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
  box-shadow: 0 4px 10px rgba(200,146,46,.3);
}
.guide-card h3 { font-size: 16.5px; font-weight: 800; color: var(--ink); letter-spacing: .2px; }
.guide-card h3 a:hover { color: var(--blue); }
.guide-card p { font-size: 13.5px; color: var(--text-2); margin-top: 8px; line-height: 1.7; min-height: 52px; }
.guide-card .glink {
  margin-top: 12px; display: inline-block;
  font-size: 12.5px; font-weight: 700; color: var(--gold);
  transition: color .2s;
}
.guide-card .glink:hover { color: var(--ink); }

/* ==========================================================
   广告合作 / 价格表
   ========================================================== */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.plan-card {
  position: relative; overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 26px 24px;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition: border-color .22s, box-shadow .22s, transform .22s;
}
.plan-card:hover { border-color: rgba(28,91,150,.28); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.plan-card.feature {
  border: 1.5px solid var(--gold);
  box-shadow: var(--shadow-gold);
  background: linear-gradient(180deg, #fffdf8 0%, var(--surface) 42%);
}
.plan-card.feature::before {
  content: "推荐"; position: absolute; top: 16px; right: -30px;
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  color: #fff; font-size: 11px; font-weight: 800; letter-spacing: 1px;
  padding: 5px 34px; transform: rotate(38deg);
  box-shadow: 0 3px 10px rgba(200,146,46,.3);
}
.plan-card .pname { font-size: 17.5px; font-weight: 800; color: var(--ink); letter-spacing: .2px; }
.plan-card .price {
  margin: 12px 0 4px; font-size: 30px; font-weight: 800;
  background: linear-gradient(120deg, var(--ink), var(--navy));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.plan-card.feature .price {
  background: linear-gradient(120deg, var(--gold), var(--gold-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.plan-card .price small {
  font-size: 13px; font-weight: 600; color: var(--muted);
  -webkit-text-fill-color: var(--muted);
  background: none;
}
.plan-card .pdesc { font-size: 13px; color: var(--muted); margin-bottom: 14px; line-height: 1.7; }
.plan-card ul { list-style: none; margin: 8px 0 18px; }
.plan-card ul li {
  font-size: 13.5px; color: var(--text-2);
  padding: 9px 0 9px 24px;
  border-bottom: 1px dashed var(--line);
  position: relative; line-height: 1.6;
}
.plan-card ul li:last-child { border-bottom: 0; }
.plan-card ul li::before {
  content: "✓"; position: absolute; left: 2px; top: 9px;
  color: var(--green); font-weight: 800; font-size: 13px;
}
.cta-btn {
  display: inline-block; text-align: center; margin-top: auto;
  background: linear-gradient(135deg, var(--ink) 0%, var(--navy) 100%);
  color: #fff; font-weight: 700; font-size: 14.5px;
  padding: 13px 20px; border-radius: 12px;
  box-shadow: 0 6px 18px rgba(10,28,48,.22);
  transition: transform .2s, box-shadow .2s, filter .2s;
}
.cta-btn:hover { filter: brightness(1.12); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(10,28,48,.28); }

/* ==========================================================
   内文关键词链接
   ========================================================== */
.kwlink {
  color: var(--blue); font-weight: 600;
  border-bottom: 1px solid rgba(28,91,150,.32);
  transition: color .2s, border-color .2s;
}
.kwlink:hover { color: var(--gold); border-bottom-color: var(--gold); }

/* ==========================================================
   页脚
   ========================================================== */
footer.site {
  position: relative; overflow: hidden;
  background: linear-gradient(178deg, #0d2338 0%, #081726 46%, #050f1b 100%);
  color: #92a7bd; padding: 52px 0 24px; font-size: 13px; margin-top: 24px;
}
footer.site::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-2) 30%, var(--navy) 60%, var(--gold));
}
footer.site::after {
  content: ""; position: absolute; bottom: -180px; left: -120px;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(200,146,46,.10), transparent 65%);
  pointer-events: none;
}
footer.site .wrap { position: relative; z-index: 2; }
.foot-grid {
  position: relative;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start;
  gap: 30px 44px; padding-bottom: 26px;
}
.foot-grid::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232,185,90,.42), rgba(255,255,255,.1), transparent);
}
.foot-brand { flex: 1 1 520px; min-width: 280px; display: flex; flex-wrap: wrap; align-items: flex-start; gap: 26px 28px; text-align: left; }
.foot-brand-main { flex: 1 1 280px; min-width: 240px; display: flex; flex-direction: column; align-items: flex-start; gap: 15px; }
.foot-coverage { flex: 0 1 250px; display: flex; flex-direction: column; gap: 10px; }
.foot-cover-desc { margin: 0; font-size: 13px; color: #8399b0; line-height: 1.8; }
.foot-cats { display: flex; flex-wrap: wrap; gap: 7px; }
.foot-cats span {
  font-size: 12.5px; color: #9db2c7;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px; padding: 4px 12px;
  transition: border-color .2s, color .2s, background .2s;
}
.foot-cats span:hover { border-color: rgba(232,185,90,.48); color: var(--gold-soft); background: rgba(232,185,90,.07); }
.brand-foot { display: flex; align-items: center; gap: 13px; }
.brand-foot .logo {
  width: 48px; height: 48px; font-size: 22px; border-radius: 14px;
  background: linear-gradient(140deg, var(--gold-2) 0%, var(--gold) 55%, #9a6c1f 100%);
  box-shadow: 0 8px 22px rgba(200,146,46,.26);
}
.brand-foot .name { font-size: 25px; font-weight: 800; color: #fff; letter-spacing: 3px; }
.foot-desc { max-width: 450px; color: #a8bccf; margin: 0; line-height: 1.85; font-size: 14px; text-align: left; }
.foot-keys { display: flex; flex-wrap: wrap; justify-content: flex-start; align-items: center; margin-top: 2px; }
.foot-keys span {
  position: relative; padding: 0 16px;
  color: #849bb2; font-size: 13.5px; letter-spacing: .5px;
  transition: color .2s;
}
.foot-keys span:first-child { padding-left: 0; }
.foot-keys span:hover { color: var(--gold-soft); }
.foot-keys span:not(:last-child)::after {
  content: ""; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  width: 1px; height: 12px; background: rgba(255,255,255,.16);
}
.foot-divider {
  flex: 0 0 1px; align-self: stretch; width: 1px; margin: 6px 0 12px;
  background: linear-gradient(180deg, transparent, rgba(232,185,90,.3) 20%, rgba(232,185,90,.3) 80%, transparent);
}
.foot-links { display: flex; flex-wrap: wrap; gap: 46px; }
.foot-links-col { display: flex; flex-direction: column; gap: 11px; min-width: 130px; }
.col-title {
  font-size: 13px; font-weight: 700; color: #fff; letter-spacing: 1.5px;
  margin-bottom: 5px; position: relative; padding-bottom: 9px;
}
.col-title::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--gold-2), transparent);
}
.foot-links-col a {
  color: #8fa5bb; font-size: 14px; text-decoration: none;
  transition: color .2s, transform .2s;
  display: inline-block;
}
.foot-links-col a:hover { color: var(--gold-soft); transform: translateX(3px); }
footer .bottom {
  margin-top: 20px; padding-top: 20px; text-align: center;
  font-size: 13px; color: #8299b0; line-height: 1.8;
}
footer .bottom .foot-slogan { margin: 0; }
footer .bottom a { color:#8299b0; text-decoration: none; transition: color .2s; }
footer .bottom a:hover { color: #fff; }

/* ==========================================================
   广告位一览表
   ========================================================== */
.slot-table-wrap {
  margin-top: 18px;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xs);
}
.slot-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 13.5px;
}
.slot-table th {
  text-align: left;
  padding: 13px 16px;
  background: linear-gradient(180deg, #f7fafd, #eef3f9);
  color: var(--text-2);
  font-weight: 700;
  white-space: nowrap;
  border-bottom: 1px solid var(--line-2);
  letter-spacing: .3px;
}
.slot-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
  vertical-align: middle;
}
.slot-table tbody tr { transition: background .16s; }
.slot-table tbody tr:hover { background: #fafbfd; }
.slot-table tbody tr:last-child td { border-bottom: 0; }
.slot-table td b { color: var(--ink); font-weight: 700; }
.slot-table code {
  display: inline-block;
  font-family: Consolas, Monaco, monospace;
  font-size: 12px;
  color: var(--blue);
  background: rgba(28,91,150,.07);
  border: 1px solid rgba(28,91,150,.14);
  border-radius: 6px;
  padding: 2px 8px;
  white-space: nowrap;
}
/* 示意位行：弱化处理，与可投放位区分 */
.slot-table tr.slot-demo { background: #fbfaf7; }
.slot-table tr.slot-demo td { color: var(--muted); }
.slot-table tr.slot-demo td b { color: var(--text-2); }
.slot-table tr.slot-demo code { color: var(--muted); background: var(--bg-2); border-color: var(--line); }
.slot-note {
  display: inline-block;
  margin-left: 8px;
  font-size: 11px;
  font-weight: 600;
  color: #8a6d12;
  background: #fdf3dd;
  border: 1px solid rgba(200,146,46,.3);
  border-radius: 999px;
  padding: 1px 8px;
  vertical-align: 1px;
}
.slot-tip {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.75;
  padding-left: 14px;
  border-left: 3px solid var(--gold-dim);
}

/* ==========================================================
   术语表
   ========================================================== */
.term-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.term {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: var(--r);
  padding: 16px 18px;
  box-shadow: var(--shadow-xs);
  transition: border-color .22s, box-shadow .22s, transform .22s;
}
.term:hover { border-color: rgba(200,146,46,.42); box-shadow: var(--shadow); transform: translateY(-2px); }
.term b { font-size: 15px; color: var(--ink); font-weight: 800; }
.term .en { font-size: 11px; color: var(--muted); margin-left: 8px; font-weight: 600; letter-spacing: .3px; }
.term p { font-size: 13px; color: var(--text-2); margin-top: 7px; line-height: 1.7; }
.term-tip {
  background: linear-gradient(120deg, #fdf8ee, #fbf3e2);
  border: 1px solid rgba(200,146,46,.28);
  border-radius: var(--r);
  padding: 13px 17px; margin: 6px 0 20px;
  font-size: 13.5px; color: #6b5320; line-height: 1.7;
}
.term-tip a { color: var(--gold); font-weight: 700; }
.term-tip a:hover { color: var(--ink); }

/* ==========================================================
   滚动渐入动效（由 site.js 添加 .rv 类）
   ========================================================== */
.rv { opacity: 0; transform: translateY(22px); }
.rv.rv-in {
  opacity: 1; transform: none;
  transition: opacity .62s cubic-bezier(.22,.61,.36,1), transform .62s cubic-bezier(.22,.61,.36,1);
}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width: 1080px) {
  .stats-strip .wrap { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .stat-item:nth-child(2) { border-right: 0; }
  .stat-item:nth-child(3) { padding-left: 0; }
}
@media (max-width: 980px) {
  nav.main a:not(.cta) { display: none; }
  .layout { flex-direction: column; }
  .main, .aside { width: 100%; flex: 1 1 auto; }
  .cat-grid, .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-list, .plan-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 27px; }
  .hero .wrap { padding: 48px 24px 44px; }
  .subhero h1 { font-size: 23px; }
  .ad-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .foot-divider { display: none; }
  .plan-card.feature::before { top: 13px; right: -32px; }
}
@media (max-width: 640px) {
  .news-grid { grid-template-columns: 1fr; }
  .cat-grid, .guide-grid { grid-template-columns: 1fr; }
  .term-list { grid-template-columns: 1fr; }
  .ad-row { grid-template-columns: 1fr; }
  .stats-strip .wrap { grid-template-columns: 1fr; gap: 18px; }
  .stat-item { padding: 0; border-right: 0; }
  .stat-item:not(:last-child) { padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,.09); }
  .hero h1 { font-size: 23px; }
  .stat-item .num { font-size: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}