/* ============================================================
   好道传媒科技(南京)有限公司 官网 · 全站样式
   品牌视觉：黑橙 (Black & Orange) — 源自好道传媒 LOGO
   ============================================================ */

:root {
  --bg: #0a0a0c;
  --bg-2: #0f0f13;
  --card: #14141a;
  --card-2: #191921;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --orange: #ff7a1a;
  --orange-2: #ffb347;
  --orange-deep: #ff5400;
  --text: #f3f3f5;
  --muted: #a2a2ae;
  --muted-2: #77778a;
  --grad-orange: linear-gradient(135deg, #ff7a1a 0%, #ffb347 100%);
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --shadow-orange: 0 12px 40px rgba(255, 122, 26, 0.25);
  --font: "PingFang SC", "Microsoft YaHei", "微软雅黑", "Helvetica Neue",
    system-ui, -apple-system, "Segoe UI", sans-serif;
  --header-h: 72px;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: rgba(255, 122, 26, 0.35); color: #fff; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- 通用文字 ---------- */
h1, h2, h3, h4 { font-weight: 800; line-height: 1.3; letter-spacing: 0.01em; }

.text-gradient {
  background: var(--grad-orange);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead { color: var(--muted); font-size: 17px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-orange);
  color: #140800;
  box-shadow: var(--shadow-orange);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 48px rgba(255, 122, 26, 0.4); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover { border-color: var(--orange); color: var(--orange-2); transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 17px 40px; font-size: 17px; }

/* ---------- 顶部导航 ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(10, 10, 12, 0.72);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.header.scrolled { border-bottom-color: var(--line); background: rgba(10, 10, 12, 0.92); }
.header .container { height: 100%; display: flex; align-items: center; gap: 28px; }

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo img { height: 40px; width: auto; mix-blend-mode: screen; } /* 黑底 LOGO 融入深色背景，图片字标即品牌名 */
.logo-text { font-size: 20px; font-weight: 900; letter-spacing: 0.06em; }

.nav { display: flex; gap: 4px; margin-left: auto; }
.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--muted);
  border-radius: 8px;
  transition: color 0.2s ease;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--orange-2); font-weight: 700; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--grad-orange);
  border-radius: 2px;
}
.header-cta { margin-left: 10px; }
.nav-mobile-cta { display: none; } /* 移动端菜单内 CTA，桌面隐藏 */

.menu-toggle {
  display: none;
  margin-left: auto;
  width: 42px; height: 42px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
}
.menu-toggle span {
  display: block;
  width: 18px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 60px) 0 90px;
  overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% 8%, rgba(255, 122, 26, 0.16), transparent 60%),
    radial-gradient(700px 420px at 8% 90%, rgba(255, 84, 0, 0.1), transparent 60%),
    var(--bg);
}
.hero-grid-bg {
  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: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 860px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border: 1px solid rgba(255, 122, 26, 0.4);
  border-radius: 999px;
  color: var(--orange-2);
  font-size: 14px;
  font-weight: 600;
  background: rgba(255, 122, 26, 0.08);
  margin-bottom: 26px;
}
.hero-kicker::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 12px var(--orange);
}
.hero h1 {
  font-size: clamp(38px, 6.2vw, 74px);
  letter-spacing: 0.02em;
  margin-bottom: 22px;
}
.hero-sub { font-size: clamp(16px, 2vw, 20px); color: var(--muted); max-width: 640px; margin-bottom: 40px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 70px; }

.hero-tri {
  position: absolute;
  right: -40px;
  top: 18%;
  z-index: 1;
  width: min(520px, 42vw);
  opacity: 0.9;
  filter: drop-shadow(0 30px 80px rgba(255, 122, 26, 0.25));
  animation: floatY 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-22px); } }

/* 数字带 */
.stats-band {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(20, 20, 26, 0.6);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  overflow: hidden;
}
.stat {
  padding: 30px 20px;
  text-align: center;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-size: clamp(30px, 3.6vw, 46px);
  font-weight: 900;
  color: var(--orange);
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.stat-num small { font-size: 0.55em; font-weight: 800; margin-left: 2px; }
.stat-label { margin-top: 6px; color: var(--muted); font-size: 14px; }

/* 跑马灯 */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  background: var(--bg-2);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  gap: 56px;
  width: max-content;
  animation: marquee 36s linear infinite;
  white-space: nowrap;
}
.marquee-track span { color: var(--muted-2); font-size: 15px; letter-spacing: 0.1em; }
.marquee-track span i { color: var(--orange); font-style: normal; margin-right: 8px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 区块 ---------- */
.section { padding: 100px 0; position: relative; }
.section-alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  display: inline-block;
  color: var(--orange);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.28em;
  margin-bottom: 14px;
}
.section-title { font-size: clamp(28px, 3.6vw, 42px); margin-bottom: 16px; }
.section-desc { color: var(--muted); font-size: 16.5px; }

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 24px; }
.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 {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.card:hover { transform: translateY(-6px); border-color: rgba(255, 122, 26, 0.45); box-shadow: var(--shadow); }
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad-orange);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover::before { opacity: 1; }
.card-icon {
  width: 54px; height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(255, 122, 26, 0.12);
  color: var(--orange-2);
  margin-bottom: 20px;
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: var(--orange-2);
  font-size: 14px;
  font-weight: 700;
}
.card .more:hover { gap: 10px; }
.card .more { transition: gap 0.25s ease; }

/* 业务编号卡 */
.num-card { counter-increment: biz; }
.num-card .idx {
  font-size: 15px;
  font-weight: 900;
  color: var(--orange);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}

/* 徽标行 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 13.5px;
  background: rgba(255, 255, 255, 0.02);
}
.tag.hot { border-color: rgba(255, 122, 26, 0.5); color: var(--orange-2); background: rgba(255, 122, 26, 0.08); }

/* ---------- 拆分布局 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split .section-head { margin-bottom: 32px; }

.check-list { display: grid; gap: 14px; margin-top: 26px; }
.check-list li {
  display: flex;
  gap: 12px;
  color: var(--muted);
  font-size: 15.5px;
}
.check-list li b { color: var(--text); font-weight: 700; }
.check-list li b { white-space: nowrap; }
.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 22px; height: 22px;
  margin-top: 4px;
  border-radius: 50%;
  background: rgba(255, 122, 26, 0.15) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%23ff7a1a" stroke-width="3.2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6 9 17l-5-5"/></svg>') center/12px no-repeat;
}

/* 视觉面板（代码风/数据风） */
.panel {
  position: relative;
  background: linear-gradient(160deg, #191921, #101016);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow);
}
.panel-bar { display: flex; gap: 8px; margin-bottom: 26px; }
.panel-bar i { width: 11px; height: 11px; border-radius: 50%; background: #2c2c36; }
.panel-bar i:first-child { background: var(--orange); }
.panel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 4px;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
}
.panel-row:last-child { border-bottom: none; }
.panel-row .name { color: var(--muted); }
.panel-row .val { font-weight: 800; color: var(--orange-2); font-variant-numeric: tabular-nums; }

/* ---------- 十大服务卡 ---------- */
.svc-card { padding: 26px 24px; }
.svc-card .no {
  font-size: 13px;
  font-weight: 900;
  color: var(--orange);
  letter-spacing: 0.14em;
  margin-bottom: 10px;
}
.svc-card h3 { font-size: 18px; margin-bottom: 8px; }
.svc-card p { font-size: 14px; }

/* ---------- 对比表 ---------- */
.compare-wrap { overflow-x: auto; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--card); }
.compare { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 15px; }
.compare th, .compare td { padding: 18px 22px; text-align: left; border-bottom: 1px solid var(--line); }
.compare thead th { background: rgba(255, 255, 255, 0.03); font-size: 15.5px; }
.compare thead th.hd { color: var(--orange-2); }
.compare tbody tr:last-child td { border-bottom: none; }
.compare td.dim { color: var(--muted-2); }
.compare td.good { color: var(--text); font-weight: 600; }
.compare td.good::before { content: "✦ "; color: var(--orange); }
.compare tbody tr:hover td { background: rgba(255, 122, 26, 0.04); }

/* ---------- 时间线 ---------- */
.timeline { position: relative; display: grid; gap: 0; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), rgba(255, 122, 26, 0.08));
}
.tl-item { position: relative; padding: 0 0 40px 22px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -34px; top: 7px;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 3px solid var(--orange);
  background: var(--bg);
  box-shadow: 0 0 0 5px rgba(255, 122, 26, 0.15);
}
.tl-year { color: var(--orange); font-weight: 900; font-size: 19px; margin-bottom: 6px; font-variant-numeric: tabular-nums; }
.tl-item h3 { font-size: 18px; margin-bottom: 6px; }
.tl-item p { color: var(--muted); font-size: 15px; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 14px; max-width: 860px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item.open { border-color: rgba(255, 122, 26, 0.45); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 16.5px;
  font-weight: 700;
  text-align: left;
}
.faq-q .ic {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange-2);
  font-size: 18px;
  font-weight: 400;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.open .ic { transform: rotate(45deg); background: rgba(255, 122, 26, 0.15); border-color: var(--orange); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a p { padding: 0 24px 22px; color: var(--muted); font-size: 15.5px; }

/* ---------- 页面 Hero（内页） ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 70px) 0 64px;
  background:
    radial-gradient(700px 340px at 80% 0%, rgba(255, 122, 26, 0.14), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-hero h1 { font-size: clamp(30px, 4.4vw, 50px); margin-bottom: 14px; }
.page-hero .lead { max-width: 760px; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 13.5px;
  color: var(--muted-2);
  margin-bottom: 22px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--orange-2); }
.breadcrumb .sep { color: var(--muted-2); opacity: 0.6; }

/* ---------- CTA 带 ---------- */
.cta-band {
  position: relative;
  border-radius: 26px;
  padding: 70px 60px;
  overflow: hidden;
  background:
    radial-gradient(600px 300px at 90% 10%, rgba(255, 179, 71, 0.25), transparent 60%),
    linear-gradient(140deg, #20130a, #14100c 55%, #1a120b);
  border: 1px solid rgba(255, 122, 26, 0.35);
  text-align: center;
}
.cta-band h2 { font-size: clamp(26px, 3.6vw, 40px); margin-bottom: 14px; }
.cta-band p { color: var(--muted); margin-bottom: 34px; }
.cta-band .hero-actions { margin-bottom: 0; justify-content: center; }

/* ---------- 新闻卡 ---------- */
.news-card { display: flex; flex-direction: column; padding: 0; }
.news-cover {
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(150deg, #221409, #15121a);
  border-bottom: 1px solid var(--line);
  color: rgba(255, 122, 26, 0.8);
  font-size: 44px;
  font-weight: 900;
  letter-spacing: 0.1em;
}
.news-body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; gap: 14px; font-size: 13px; color: var(--muted-2); margin-bottom: 12px; }
.news-meta .cat { color: var(--orange-2); font-weight: 700; }
.news-card h3 { font-size: 18.5px; margin-bottom: 10px; line-height: 1.5; }
.news-card p { color: var(--muted); font-size: 14.5px; flex: 1; }
.news-card .more { margin-top: 18px; }

/* ---------- 新闻详情 ---------- */
.article { max-width: 820px; margin: 0 auto; }
.article-head { margin-bottom: 40px; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.article-head h1 { font-size: clamp(26px, 3.6vw, 38px); line-height: 1.45; margin: 14px 0 18px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted-2); font-size: 14px; }
.article-body { color: #cfcfd8; font-size: 16.5px; display: grid; gap: 20px; }
.article-body h2 { font-size: 24px; margin-top: 18px; color: var(--text); }
.article-body h3 { font-size: 19px; margin-top: 10px; color: var(--text); }
.article-body strong { color: var(--orange-2); font-weight: 700; }
.article-body ul { display: grid; gap: 10px; padding-left: 4px; }
.article-body ul li { padding-left: 22px; position: relative; }
.article-body ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 12px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--orange);
  transform: rotate(45deg);
}
.article-box {
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
}
.article-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 50px; padding-top: 26px; border-top: 1px solid var(--line); font-size: 14.5px; }
.article-nav a { color: var(--muted); }
.article-nav a:hover { color: var(--orange-2); }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: grid; gap: 8px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 14.5px; font-weight: 700; }
.form-field label i { color: var(--orange); font-style: normal; }
.form-field input, .form-field select, .form-field textarea {
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 13px 16px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
}
.form-field textarea { min-height: 130px; resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.18);
}
.form-field select { appearance: none; background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="%23a2a2ae" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"><path d="m6 9 6 6 6-6"/></svg>'); background-repeat: no-repeat; background-position: right 16px center; }
.form-tip { font-size: 13px; color: var(--muted-2); }
.form-ok {
  display: none;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: 10px;
  background: rgba(255, 122, 26, 0.1);
  border: 1px solid rgba(255, 122, 26, 0.45);
  color: var(--orange-2);
  font-size: 15px;
  font-weight: 600;
}
.form-ok.show { display: flex; }

/* ---------- 联系卡 ---------- */
.contact-card { display: flex; gap: 18px; align-items: flex-start; }
.contact-card .card-icon { margin-bottom: 0; flex-shrink: 0; }
.contact-card h3 { font-size: 16px; color: var(--muted); font-weight: 600; margin-bottom: 6px; }
.contact-card p { font-size: 17px; font-weight: 700; color: var(--text); line-height: 1.6; }
.contact-card p small { display: block; font-size: 13.5px; color: var(--muted-2); font-weight: 400; }
.contact-card a:hover { color: var(--orange-2); }

/* ---------- 页脚 ---------- */
.footer {
  background: #070709;
  border-top: 1px solid var(--line);
  padding: 80px 0 0;
  margin-top: 0;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 48px; padding-bottom: 56px; }
.footer .logo { margin-bottom: 18px; }
.footer .logo img { height: 35px; }
.ext { font-size: 0.78em; opacity: 0.7; margin-left: 2px; }

/* 平台入口（三大业务外链） */
.platform-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid rgba(255, 122, 26, 0.5);
  color: var(--orange-2);
  background: rgba(255, 122, 26, 0.08);
  font-size: 14px;
  font-weight: 700;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.platform-link:hover { background: var(--grad-orange); color: #140800; transform: translateY(-2px); }
.site-domain {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted-2);
  font-variant-numeric: tabular-nums;
}
.card-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 18px; }
.card-actions .more { margin-top: 0; }
.footer-desc { color: var(--muted-2); font-size: 14.5px; max-width: 300px; }
.footer h4 { font-size: 15.5px; margin-bottom: 20px; color: var(--text); }
.footer-links { display: grid; gap: 11px; }
.footer-links a { color: var(--muted-2); font-size: 14.5px; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--orange-2); }
.footer-contact { display: grid; gap: 14px; font-size: 14.5px; color: var(--muted-2); }
.footer-contact b { color: var(--text); font-weight: 700; }
.footer-contact a { color: var(--orange-2); font-weight: 700; }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  color: var(--muted-2);
  font-size: 13px;
}
.footer-bottom a { color: var(--muted-2); }
.footer-bottom a:hover { color: var(--orange-2); }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 26px; bottom: 30px;
  z-index: 90;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 122, 26, 0.5);
  background: rgba(20, 20, 26, 0.9);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--orange-2);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s ease;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--orange); color: #140800; }

/* ---------- 滚动入场动效（默认可见：仅在 JS 就绪后启用动画，避免无 JS/异常时内容不可见） ---------- */
html.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
html.js .reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: 0.08s; } .d2 { transition-delay: 0.16s; } .d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.32s; } .d5 { transition-delay: 0.4s; } .d6 { transition-delay: 0.48s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track, .hero-tri { animation: none; }
}

/* ---------- 图片元素 ---------- */
.card-cover { margin: -34px -30px 26px; overflow: hidden; border-bottom: 1px solid var(--line); }
.card-cover img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; display: block; transition: transform 0.5s ease; filter: brightness(0.92) saturate(0.96); }
.card:hover .card-cover img { transform: scale(1.045); }
.news-cover img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.92) saturate(0.96); }
.section-banner {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 6px 0 46px;
  box-shadow: var(--shadow);
}
.section-banner img { width: 100%; height: auto; aspect-ratio: 21 / 8; object-fit: cover; display: block; }
.article-cover { border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; margin: 0 0 34px; }
.article-cover img { width: 100%; height: auto; aspect-ratio: 21 / 9; object-fit: cover; display: block; }
.page-hero .hero-bg {
  position: absolute;
  right: 0; top: 0;
  height: 100%; width: 58%;
  object-fit: cover;
  opacity: 0.4;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 45%);
  mask-image: linear-gradient(90deg, transparent, #000 45%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .hero-tri { opacity: 0.35; }
}

@media (max-width: 960px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 2px;
    background: rgba(10, 10, 12, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 18px 6vw 26px;
    margin: 0;
    display: none;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .nav.open { display: flex; }
  .nav-link { padding: 13px 10px; font-size: 16px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav-link.active::after { display: none; }
  .header-cta { margin: 14px 10px 0; }
  .menu-toggle { display: flex; }
  .header-cta.nav-cta { display: none; }
  .nav-mobile-cta { display: inline-flex; margin: 16px 4px 0; justify-content: center; }

  .split { grid-template-columns: 1fr; gap: 44px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid var(--line); }
  .stat:nth-child(2n) { border-right: none; }
  .stat:nth-child(3), .stat:nth-child(4) { border-bottom: none; }
  .section { padding: 76px 0; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .page-hero .hero-bg { width: 100%; opacity: 0.22; -webkit-mask-image: linear-gradient(180deg, transparent, #000 55%); mask-image: linear-gradient(180deg, transparent, #000 55%); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-bottom: 64px; }
  .hero-actions .btn { width: 100%; }
  .cta-band { padding: 52px 26px; }
  .cta-band .hero-actions { flex-direction: column; }
  .cta-band .hero-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .stats-band { grid-template-columns: 1fr 1fr; }
  .section { padding: 62px 0; }
  .page-hero { padding-bottom: 46px; }
}