/* ============================================================
   中安惟青官网 全站样式
   墨蓝 × 惟青 · 克制 · 留白
   ============================================================ */

/* ---------- 设计 Token ---------- */
:root {
  /* 墨蓝 */
  --ink-950: #071729;
  --ink-900: #0a1f38;
  --ink-800: #0f2b4c;
  --ink-700: #123457;
  /* 惟青 */
  --qing-600: #12938c;
  --qing-500: #1ba8a0;
  --qing-300: #5ec9c2;
  --qing-50:  #e9f7f6;
  /* 中性 */
  --text:    #22313f;
  --muted:   #5b6b7a;
  --faint:   #8fa0af;
  --bg:      #ffffff;
  --bg-soft: #f6f8fa;
  --line:    #e4eaf0;
  --on-dark:      rgba(255, 255, 255, .92);
  --on-dark-mute: rgba(255, 255, 255, .62);

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

  /* 阴影（仅两档，极淡） */
  --shadow-1: 0 2px 12px rgba(10, 31, 56, .06);
  --shadow-2: 0 12px 32px rgba(10, 31, 56, .12);

  --radius: 12px;
  --header-h: 72px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- Reset 与基础 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font: inherit; color: inherit; }

::selection { background: rgba(27, 168, 160, .22); }

:focus-visible { outline: 2px solid var(--qing-500); outline-offset: 2px; border-radius: 4px; }

/* ---------- 布局 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 72px 0; }

/* ---------- 区块标题 ---------- */
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--qing-600);
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--qing-500); }
.section-head--center .eyebrow::after { content: ""; width: 22px; height: 2px; background: var(--qing-500); }

.section-title { font-size: 34px; font-weight: 700; line-height: 1.35; letter-spacing: .01em; }
.section-sub { margin-top: 14px; font-size: 16px; color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .02em;
  transition: all .25s var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--qing-500); color: #fff; box-shadow: 0 6px 18px rgba(27, 168, 160, .28); }
.btn--primary:hover { background: var(--qing-600); transform: translateY(-2px); }
.btn--ghost { border: 1px solid rgba(255, 255, 255, .45); color: var(--on-dark); }
.btn--ghost:hover { border-color: var(--qing-300); color: #fff; background: rgba(255, 255, 255, .06); }
.btn--outline { border: 1px solid var(--line); color: var(--text); background: #fff; }
.btn--outline:hover { border-color: var(--qing-500); color: var(--qing-600); }
.btn--lg { padding: 15px 36px; font-size: 17px; }

/* ---------- 页头 / 导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  color: var(--on-dark);
  transition: background .3s var(--ease), box-shadow .3s var(--ease), color .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-1);
  color: var(--text);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 100%; }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-name { white-space: nowrap; }
.brand-mark {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--qing-500), var(--qing-600));
  color: #fff;
  display: grid; place-items: center;
  font-size: 20px; font-weight: 700;
  flex: none;
}
.brand-name { font-size: 19px; font-weight: 700; letter-spacing: .06em; line-height: 1.3; }
.brand-sub { display: block; font-size: 10.5px; font-weight: 400; letter-spacing: .08em; opacity: .66; }

.main-nav ul { display: flex; gap: 8px; }
.main-nav a {
  display: block;
  padding: 8px 16px;
  font-size: 15.5px;
  border-radius: 8px;
  opacity: .88;
  transition: all .2s var(--ease);
}
.main-nav a:hover { opacity: 1; background: rgba(255, 255, 255, .08); color: #fff; }
.site-header.scrolled .main-nav a:hover { background: var(--qing-50); color: var(--qing-600); }
.main-nav a.active { opacity: 1; font-weight: 600; color: var(--qing-300); }
.site-header.scrolled .main-nav a.active { color: var(--qing-600); }

.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 8px; align-items: center; justify-content: center; }
.nav-toggle svg { width: 24px; height: 24px; }
.nav-toggle:hover { background: rgba(255, 255, 255, .08); }
.site-header.scrolled .nav-toggle:hover { background: var(--qing-50); }

/* 移动端菜单 */
.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  z-index: 99;
  background: #fff;
  box-shadow: var(--shadow-2);
  padding: 8px 24px 16px;
  display: none;
}
.mobile-nav.open { display: block; animation: drop .25s var(--ease); }
.mobile-nav a {
  display: block;
  padding: 13px 8px;
  font-size: 16px;
  color: var(--text);
  border-bottom: 1px solid var(--bg-soft);
}
.mobile-nav a.active { color: var(--qing-600); font-weight: 600; }
.mobile-nav li:last-child a { border-bottom: none; }
@keyframes drop { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--ink-950);
  overflow: hidden;
}
.hero-media { position: absolute; inset: 0; }
.hero-media video, .hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 23, 41, .58) 0%, rgba(7, 23, 41, .30) 42%, rgba(7, 23, 41, .88) 100%);
}
.hero-inner {
  position: relative; z-index: 2;
  padding: calc(var(--header-h) + 48px) 0 132px;
  display: flex; align-items: center; justify-content: space-between; gap: 48px;
}
.hero-content { flex: 1; min-width: 0; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border: 1px solid rgba(94, 201, 194, .45);
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: .14em;
  color: var(--qing-300);
  background: rgba(7, 23, 41, .35);
  backdrop-filter: blur(4px);
  margin-bottom: 28px;
}
.hero-tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--qing-300); }

.hero-title {
  max-width: 720px;
  font-size: 52px;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: .02em;
  color: #fff;
}
.hero-title .x { color: var(--qing-300); font-weight: 400; margin: 0 10px; font-size: .8em; }
.hero-desc {
  max-width: 640px;
  margin-top: 22px;
  font-size: 18px;
  line-height: 1.9;
  color: var(--on-dark-mute);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }

.hero-scroll {
  position: absolute;
  left: 50%; bottom: 28px;
  transform: translateX(-50%);
  z-index: 2;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--on-dark-mute);
  writing-mode: vertical-rl;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero-scroll::after { content: ""; width: 1px; height: 34px; background: linear-gradient(180deg, var(--qing-300), transparent); animation: drip 2.2s var(--ease) infinite; }
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: top; } 56% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* 首屏吉祥物：立于标语右侧 */
.hero-mascot { position: relative; flex: none; width: 250px; }
.hero-mascot::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 130%; aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 168, 160, .22) 0%, transparent 65%);
  pointer-events: none;
}
.hero-mascot img {
  position: relative;
  width: 100%; height: auto;
  filter: drop-shadow(0 20px 38px rgba(0, 0, 0, .55));
  animation: floaty 5s ease-in-out infinite;
}

/* ---------- 数据亮点条（悬浮于 Hero 底部） ---------- */
.stats-band { position: relative; z-index: 3; margin-top: -88px; }
.stats-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-2);
  padding: 40px 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat { text-align: center; padding: 4px 12px; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat-num {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-900);
  font-variant-numeric: tabular-nums;
}
.stat-num small { font-size: 18px; font-weight: 600; color: var(--qing-600); margin-left: 2px; }
.stat-label { margin-top: 8px; font-size: 14.5px; color: var(--muted); }

/* ---------- 卡片与网格 ---------- */
.grid { display: grid; gap: 28px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-2); border-color: rgba(27, 168, 160, .4); }

.card-icon {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: var(--qing-50);
  color: var(--qing-600);
  display: grid; place-items: center;
  margin-bottom: 22px;
}
.card-icon svg { width: 28px; height: 28px; }
.card h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; letter-spacing: .01em; }
.card p { font-size: 15px; color: var(--muted); }
.card .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 14.5px; font-weight: 500; color: var(--qing-600); }
.card .more svg { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.card:hover .more svg { transform: translateX(4px); }

/* ---------- 融合理念（首页） ---------- */
.fusion { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.fusion-visual { position: relative; aspect-ratio: 1 / .92; max-width: 480px; margin: 0 auto; width: 100%; }
.circle {
  position: absolute;
  width: 52%;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 17px; font-weight: 600;
  letter-spacing: .1em;
  mix-blend-mode: multiply;
}
.circle span { mix-blend-mode: normal; } /* 墨蓝衬青绿，克制不花哨 */
.circle--c1 { top: 0; left: 24%; background: rgba(10, 31, 56, .82); color: #fff; }
.circle--c2 { bottom: 0; left: 0; background: rgba(27, 168, 160, .78); color: #fff; }
.circle--c3 { bottom: 0; right: 0; background: rgba(94, 201, 194, .55); color: var(--ink-950); }
.fusion-core {
  position: absolute;
  top: 52%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 50%;
  width: 31%;
  aspect-ratio: 1;
  display: grid; place-items: center;
  text-align: center;
  font-size: 15px; font-weight: 700;
  color: var(--ink-900);
  box-shadow: var(--shadow-1);
  line-height: 1.4;
}
.fusion-copy .section-head { margin-bottom: 24px; }
.fusion-copy p { color: var(--muted); margin-bottom: 14px; }
.fusion-points { margin-top: 26px; display: grid; gap: 14px; }
.fusion-points li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; }
.fusion-points .dot { flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--qing-50); color: var(--qing-600); font-size: 12px; display: grid; place-items: center; margin-top: 4px; }

/* ---------- 视频专区（原位播放） ---------- */
.video-feature {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-2);
  background: var(--ink-950);
  aspect-ratio: 16 / 9;
  width: 100%;
}
.video-inline {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  background: #000;
  cursor: pointer;
}
.video-feature::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,23,41,.05) 30%, rgba(7,23,41,.72) 100%);
  pointer-events: none;
  transition: opacity .35s var(--ease);
}
.video-feature.playing::after { opacity: 0; }
.video-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 84px; height: 84px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .94);
  display: grid; place-items: center;
  box-shadow: 0 8px 30px rgba(7, 23, 41, .4);
  transition: transform .25s var(--ease), background .25s, opacity .3s var(--ease);
}
.video-feature:hover .video-play { transform: translate(-50%, -50%) scale(1.07); background: #fff; }
.video-feature.playing .video-play { opacity: 0; pointer-events: none; }
.video-play svg { width: 30px; height: 30px; margin-left: 4px; color: var(--ink-900); }
.video-caption {
  position: absolute; left: 28px; right: 28px; bottom: 22px; z-index: 2;
  color: #fff;
  pointer-events: none;
  transition: opacity .35s var(--ease);
}
.video-feature.started .video-caption { opacity: 0; }
.vc-title { display: block; font-size: 19px; font-weight: 600; }
.vc-sub { display: block; font-size: 13.5px; color: var(--on-dark-mute); margin-top: 2px; }

/* ---------- 新闻 ---------- */
.demo-note {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  border: 1px dashed #cbd6df;
  border-radius: 10px;
  background: #fbfcfd;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 40px;
}
.demo-note svg { flex: none; width: 18px; height: 18px; color: var(--qing-600); }

.news-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.tab {
  padding: 9px 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 15px;
  color: var(--muted);
  background: #fff;
  transition: all .2s var(--ease);
}
.tab:hover { border-color: var(--qing-500); color: var(--qing-600); }
.tab.active { background: var(--qing-500); border-color: var(--qing-500); color: #fff; font-weight: 500; }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  display: flex; flex-direction: column;
}
.news-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-2); }
.news-item.hide { display: none; }
.news-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--ink-900) 0%, var(--ink-700) 55%, #1a5f6e 100%);
  overflow: hidden;
}
.news-cover::before {
  content: "";
  position: absolute;
  width: 220px; height: 220px;
  border-radius: 50%;
  border: 1px solid rgba(94, 201, 194, .35);
  top: -70px; right: -40px;
}
.news-cover::after {
  content: "";
  position: absolute;
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 1px solid rgba(94, 201, 194, .22);
  top: -10px; right: 60px;
}
.news-cover .chip { position: absolute; left: 16px; bottom: 14px; z-index: 2; }
.news-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.news-date { font-size: 13px; color: var(--faint); font-variant-numeric: tabular-nums; }
.news-body h3 { font-size: 17.5px; font-weight: 600; line-height: 1.55; margin: 8px 0 10px; }
.news-item:hover .news-body h3 { color: var(--qing-600); }
.news-body p { font-size: 14.5px; color: var(--muted); flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.chip {
  display: inline-flex; align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  letter-spacing: .04em;
}
.chip--qing { background: rgba(27, 168, 160, .9); color: #fff; }
.chip--ghost { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.25); }
.chip--draft { background: var(--qing-50); color: var(--qing-600); border: 1px dashed rgba(27,168,160,.5); }

/* 新闻详情暂用提示 */
.news-empty { display: none; text-align: center; color: var(--muted); padding: 40px 0; }

/* ---------- CTA 区 ---------- */
.cta { position: relative; overflow: hidden; background: var(--ink-950); }
.cta::before {
  content: "";
  position: absolute;
  width: 640px; height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 168, 160, .18) 0%, transparent 68%);
  top: -220px; left: -140px;
  pointer-events: none;
}
.cta-inner { position: relative; display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: end; }
.cta h2 { font-size: 34px; font-weight: 700; color: #fff; line-height: 1.4; letter-spacing: .01em; }
.cta h2 em { font-style: normal; color: var(--qing-300); }
.cta p { margin-top: 16px; max-width: 560px; color: var(--on-dark-mute); font-size: 16.5px; }
.cta-actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 16px; }
.cta-mascot { position: relative; justify-self: end; max-width: 300px; width: 100%; }
.cta-mascot img { width: 100%; height: auto; filter: drop-shadow(0 18px 30px rgba(0, 0, 0, .45)); animation: floaty 5s ease-in-out infinite; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* 无吉祥物的居中版 CTA */
.cta-inner--simple { grid-template-columns: 1fr; text-align: center; }
.cta-inner--simple h2, .cta-inner--simple p { margin-left: auto; margin-right: auto; }
.cta-inner--simple .cta-actions { justify-content: center; }

/* 区块尾部居中操作区（如"查看全部"） */
.section-foot { text-align: center; margin-top: 48px; }

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative;
  background:
    radial-gradient(900px 380px at 82% -60px, rgba(27, 168, 160, .16), transparent 66%),
    linear-gradient(160deg, var(--ink-950) 0%, var(--ink-800) 100%);
  color: #fff;
  padding: calc(var(--header-h) + 88px) 0 84px;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, transparent 30%, #000 100%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--on-dark-mute); margin-bottom: 18px; }
.crumbs a:hover { color: var(--qing-300); }
.crumbs svg { width: 12px; height: 12px; opacity: .6; }
.page-hero h1 { font-size: 40px; font-weight: 700; letter-spacing: .02em; }
.page-hero .lead { margin-top: 16px; max-width: 680px; font-size: 16.5px; color: var(--on-dark-mute); }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: 5fr 4fr; gap: 64px; align-items: center; }
.about-intro .section-title { margin-bottom: 22px; }
.about-intro p { color: var(--muted); margin-bottom: 16px; }
.about-quote {
  background: var(--qing-50);
  border-left: 3px solid var(--qing-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 26px 28px;
  font-size: 15.5px;
  color: var(--ink-800);
  line-height: 1.9;
}
.incubator {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  box-shadow: var(--shadow-1);
}
.incubator .label { font-size: 13px; letter-spacing: .2em; color: var(--faint); margin-bottom: 14px; }
.incubator h3 { font-size: 21px; font-weight: 600; color: var(--ink-900); }
.incubator p { margin-top: 12px; font-size: 14.5px; color: var(--muted); }

.mvv { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.mvv .card { text-align: center; padding: 44px 30px; }
.mvv .card-icon { margin: 0 auto 20px; }
.mvv h3 { font-size: 19px; }
.mvv p { font-size: 14.5px; }

/* 时间线 */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 32px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--qing-500), var(--line)); }
.timeline li { position: relative; padding: 0 0 44px 28px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline::before, .timeline .t-dot { border-radius: 2px; }
.t-dot {
  position: absolute;
  left: -32px; top: 6px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--qing-500);
  box-shadow: 0 0 0 4px rgba(27, 168, 160, .14);
}
.t-head { display: flex; align-items: center; gap: 10px; margin-top: 4px; }
.t-time { font-size: 14px; font-weight: 600; color: var(--qing-600); letter-spacing: .05em; }
.timeline h3 { font-size: 18px; font-weight: 600; margin-top: 4px; }
.timeline p { font-size: 14.5px; color: var(--muted); margin-top: 6px; max-width: 560px; }

/* 荣誉资质占位 */
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.honor-tile {
  aspect-ratio: 4 / 3;
  border: 1.5px dashed #cbd6df;
  border-radius: var(--radius);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--faint);
  font-size: 14px;
  background: #fbfcfd;
  text-align: center;
  padding: 16px;
}
.honor-tile svg { width: 30px; height: 30px; opacity: .6; }

/* ---------- 解决方案页 ---------- */
.sol-block { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.sol-block:nth-child(even) .sol-visual { order: 2; }
.sol-visual {
  border-radius: 16px;
  background: linear-gradient(150deg, var(--ink-900), var(--ink-700) 70%, #14555c 100%);
  min-height: 320px;
  display: grid; place-items: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.sol-visual::before {
  content: "";
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  border: 1px solid rgba(94, 201, 194, .3);
}
.sol-visual::after {
  content: "";
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  border: 1px solid rgba(94, 201, 194, .18);
  transform: scale(1.45);
}
.sol-visual svg { width: 88px; height: 88px; color: var(--qing-300); position: relative; z-index: 2; }

.feature-list { display: grid; gap: 20px; margin-top: 28px; }
.feature-list li { display: flex; gap: 16px; }
.feature-list .f-icon {
  flex: none;
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--qing-50);
  color: var(--qing-600);
  display: grid; place-items: center;
}
.feature-list .f-icon svg { width: 22px; height: 22px; }
.feature-list h4 { font-size: 16.5px; font-weight: 600; }
.feature-list p { font-size: 14.5px; color: var(--muted); margin-top: 3px; }

/* 双栏对照 */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.compare-col { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 38px 34px; }
.compare-col.hot { border-color: rgba(27, 168, 160, .45); box-shadow: 0 0 0 1px rgba(27, 168, 160, .12), var(--shadow-1); }
.compare-col .who { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.compare-col .who svg { width: 26px; height: 26px; color: var(--qing-600); }
.compare-col h3 { font-size: 20px; font-weight: 600; }
.compare-col ul { display: grid; gap: 12px; }
.compare-col li { position: relative; padding-left: 24px; font-size: 15px; color: var(--muted); }
.compare-col li::before {
  content: "";
  position: absolute; left: 0; top: 9px;
  width: 9px; height: 9px;
  border-radius: 2px;
  background: var(--qing-50);
  border: 2px solid var(--qing-500);
}

/* 流程步骤 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 26px 30px;
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: inline-block;
  font-size: 30px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1.2px var(--qing-500);
  line-height: 1;
  margin-bottom: 18px;
  font-variant-numeric: tabular-nums;
}
.step h3 { font-size: 17.5px; font-weight: 600; }
.step p { margin-top: 8px; font-size: 14px; color: var(--muted); }
.step::after {
  content: "";
  position: absolute;
  top: 46px; right: -19px;
  width: 14px; height: 14px;
  border-top: 2px solid #c9d6e0;
  border-right: 2px solid #c9d6e0;
  transform: rotate(45deg);
}
.step:last-child::after { display: none; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 5fr 6fr; gap: 48px; align-items: start; }
.contact-cards { display: grid; gap: 18px; }
.contact-item {
  display: flex; gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.contact-item .ci-icon {
  flex: none;
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--qing-50);
  color: var(--qing-600);
  display: grid; place-items: center;
}
.contact-item .ci-icon svg { width: 22px; height: 22px; }
.contact-item h3 { font-size: 15px; color: var(--faint); font-weight: 500; }
.contact-item p { font-size: 16px; font-weight: 500; color: var(--ink-900); margin-top: 2px; }

.map-holder {
  border: 1.5px dashed #cbd6df;
  border-radius: var(--radius);
  background: #fbfcfd;
  min-height: 240px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  color: var(--faint); font-size: 14px; text-align: center; padding: 20px;
}
.map-holder svg { width: 34px; height: 34px; opacity: .55; }

.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 40px 38px;
  box-shadow: var(--shadow-1);
}
.form-card h2 { font-size: 22px; font-weight: 600; }
.form-card .form-tip { font-size: 14px; color: var(--muted); margin: 6px 0 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14.5px; font-weight: 500; margin-bottom: 8px; }
.field label .req { color: #d05656; margin-left: 2px; }
.field input, .field textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
  font-size: 15px;
  transition: border-color .2s, background .2s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--qing-500); background: #fff; box-shadow: 0 0 0 3px rgba(27, 168, 160, .12); }
.field.error input, .field.error textarea { border-color: #d05656; }
.field .err-msg { display: none; font-size: 13px; color: #d05656; margin-top: 6px; }
.field.error .err-msg { display: block; }
.form-ok {
  display: none;
  margin-top: 18px;
  padding: 13px 18px;
  border-radius: 8px;
  background: var(--qing-50);
  color: var(--qing-600);
  font-size: 14.5px;
}
.form-ok.show { display: block; animation: drop .3s var(--ease); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink-950); color: var(--on-dark-mute); }
.footer-top { display: grid; grid-template-columns: 2.2fr 1fr 1fr 1.4fr; gap: 48px; padding: 72px 0 56px; }
.footer-brand .brand { color: #fff; margin-bottom: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.9; max-width: 300px; }
.footer-col h3 { font-size: 15px; font-weight: 600; color: #fff; letter-spacing: .08em; margin-bottom: 20px; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--qing-300); }
.footer-col .fc-line { display: flex; gap: 10px; font-size: 14px; align-items: flex-start; }
.footer-col .fc-line svg { flex: none; width: 16px; height: 16px; margin-top: 5px; color: var(--qing-300); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 22px 0; }
.footer-bottom .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 13px; }
.footer-bottom a:hover { color: var(--qing-300); }
.beian { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; }
.beian a { display: inline-flex; align-items: center; gap: 5px; }
.beian img { width: 13px; height: 14px; object-fit: contain; }

/* ---------- 404 ---------- */
.nf { min-height: 100svh; display: flex; align-items: center; justify-content: center; background: var(--ink-950); text-align: center; padding: 40px 24px; }
.nf img { width: 200px; margin: 0 auto 8px; filter: drop-shadow(0 16px 30px rgba(0,0,0,.45)); animation: floaty 5s ease-in-out infinite; }
.nf h1 { font-size: 56px; font-weight: 700; color: #fff; letter-spacing: .06em; }
.nf p { color: var(--on-dark-mute); margin: 12px 0 32px; }

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .65s var(--ease), transform .65s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }

/* ---------- 通用 ---------- */
.text-link { color: var(--qing-600); font-weight: 500; }
.center { text-align: center; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid--3, .news-grid, .mvv, .steps, .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .steps .step::after { display: none; }
  .fusion { gap: 40px; }
  .hero-mascot { width: 190px; }
  .hero-title { max-width: 620px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 26px; }
  .section-head { margin-bottom: 40px; }

  .hero-title { font-size: 32px; max-width: none; }
  .hero-desc { font-size: 16px; }
  .hero-inner { padding-bottom: 120px; }
  .hero-mascot { display: none; }
  .hero-scroll { display: none; }

  .stats-card { grid-template-columns: repeat(2, 1fr); gap: 28px 12px; padding: 32px 24px; }
  .stat:nth-child(3) { border-left: none; }
  .stat-num { font-size: 32px; }

  .grid--2, .grid--3, .news-grid, .mvv, .compare, .fusion,
  .about-intro, .sol-block, .contact-grid, .form-row { grid-template-columns: 1fr; }
  .sol-block:nth-child(even) .sol-visual { order: 0; }
  .fusion-visual { max-width: 340px; }
  .cta-inner { grid-template-columns: 1fr; align-items: start; }
  .cta-mascot { justify-self: center; max-width: 220px; margin-top: 10px; }

  .page-hero { padding-top: calc(var(--header-h) + 56px); padding-bottom: 56px; }
  .page-hero h1 { font-size: 30px; }

  .steps, .honor-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; padding: 56px 0 40px; gap: 36px; }
  .footer-bottom .container { justify-content: center; text-align: center; }
  .form-card { padding: 30px 22px; }
  .video-play { width: 64px; height: 64px; }
  .video-play svg { width: 24px; height: 24px; }
  .nf h1 { font-size: 42px; }
}

/* ---------- 动效弱化 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}