/* ============================================================
   立新知产 · 企业官网设计系统
   品牌色：红 (#D61F26) + 黑 (#0B0B0E)
   风格：简约大气 · 语义化 · 响应式
   ============================================================ */

:root {
  --red: #D61F26;
  --red-dark: #B0151C;
  --red-light: #FFF1F1;
  --red-bright: #FF4D54;

  --black: #0B0B0E;
  --ink: #141418;
  --ink-2: #1D1D23;

  --bg: #FFFFFF;
  --bg-alt: #F5F5F6;

  --text: #1A1A1F;
  --text-2: #4A4A52;
  --text-3: #8A8A92;

  --border: #E7E7EA;

  --radius: 16px;
  --radius-sm: 10px;

  --shadow-sm: 0 2px 10px rgba(11, 11, 14, .06);
  --shadow-md: 0 14px 36px rgba(11, 11, 14, .10);
  --shadow-lg: 0 28px 70px rgba(11, 11, 14, .16);

  --container: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(.25, .1, .25, 1);

  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Reset & Base ---------- */
*, *::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: 15px;
  line-height: 1.7;
  color: var(--text-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--red); color: #fff; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--red); color: #fff;
  padding: 10px 18px; z-index: 999; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* 仅屏幕阅读器可见（用于保持标题层级完整） */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Layout ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--black); color: #fff; }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 60px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: .2em;
  color: var(--red); text-transform: uppercase; margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--red); border-radius: 2px; }

.title {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800; line-height: 1.25; letter-spacing: .01em;
  color: var(--text);
}
.section-dark .title, .dark .title { color: #fff; }

.section-lead { margin: 18px auto 0; color: var(--text-2); font-size: 16px; line-height: 1.9; max-width: 640px; }
.section-dark .section-lead, .dark .section-lead { color: #B9B9C0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 600; color: #fff;
  border: 1px solid transparent; cursor: pointer;
  transition: all .25s var(--ease); white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }

.btn-primary { background: var(--red); box-shadow: 0 8px 26px rgba(214, 31, 38, .30); }
.btn-primary:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(214, 31, 38, .38); }

.btn-dark { background: var(--black); }
.btn-dark:hover { background: #000; transform: translateY(-2px); }

.btn-outline { border-color: var(--text); color: var(--text); background: transparent; }
.btn-outline:hover { border-color: var(--red); color: var(--red); transform: translateY(-2px); }

.btn-ghost { border-color: rgba(255, 255, 255, .35); color: #fff; background: transparent; }
.btn-ghost:hover { background: #fff; color: var(--black); transform: translateY(-2px); }

.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: all .3s var(--ease);
}
.header.scrolled { border-color: var(--border); box-shadow: 0 4px 26px rgba(11, 11, 14, .06); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }

.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  position: relative; width: 42px; height: 42px; flex: none;
  background: var(--black); color: #fff; border-radius: 11px;
  display: grid; place-items: center;
  font-size: 21px; font-weight: 800; overflow: hidden;
}
.logo-mark::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 5px; background: var(--red);
}
.logo-name { font-size: 19px; font-weight: 800; color: var(--text); letter-spacing: .05em; line-height: 1.2; }
.logo-sub { display: block; font-size: 10px; letter-spacing: .3em; color: var(--text-3); font-weight: 500; margin-top: 2px; }
/* 后台上传 logo 后启用：仅显示图片 */
.logo .logo-img,
.f-logo .logo-img { display: block; height: 44px; width: auto; max-width: 220px; }
.footer .f-logo .logo-img { height: 40px; }
@media (max-width: 768px) {
  .logo .logo-img { height: 36px; max-width: 180px; }
  .footer .f-logo .logo-img { height: 32px; }
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 9px 15px; font-size: 15px; font-weight: 500;
  color: var(--text-2); border-radius: 8px; transition: all .25s;
  position: relative;
}
.nav a:hover { color: var(--red); background: var(--red-light); }
.nav a.active { color: var(--red); font-weight: 600; }
.nav a.active::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 3px;
  height: 2px; background: var(--red); border-radius: 2px;
}

.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 10px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border: 1px solid var(--border); }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mask {
  position: fixed; inset: 0; background: rgba(11, 11, 14, .45);
  opacity: 0; visibility: hidden; transition: all .3s; z-index: 99;
}
.nav-mask.show { opacity: 1; visibility: visible; }

/* ---------- Hero (首页) ---------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background: var(--black); color: #fff; overflow: hidden;
  padding: calc(var(--header-h) + 56px) 0 90px;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .5; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(100deg, rgba(11, 11, 14, .97) 28%, rgba(11, 11, 14, .62) 62%, rgba(11, 11, 14, .22) 100%),
    linear-gradient(0deg, rgba(11, 11, 14, .55) 0%, transparent 35%);
}
.hero .container {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr; text-align: center;
}
.hero-content { max-width: 900px; margin: 0 auto; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px; border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px; font-size: 13px; letter-spacing: .14em; color: #E8E8EC;
}
.hero-eyebrow i { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 12px var(--red); }

.hero h1 { font-size: clamp(36px, 5vw, 62px); line-height: 1.16; font-weight: 800; margin: 26px 0 22px; letter-spacing: .01em; color: #fff; }
.hero h1 .accent { color: var(--red-bright); }

.hero-sub { font-size: 17px; line-height: 1.95; color: #B9B9C0; max-width: 560px; margin: 0 auto; }

.hero-cta { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; justify-content: center; }

.hero-stats { display: flex; margin-top: 60px; border-top: 1px solid rgba(255, 255, 255, .12); padding-top: 28px; justify-content: center; }
.hero-stats .stat { flex: 1; padding-right: 18px; }
.hero-stats .stat + .stat { border-left: 1px solid rgba(255, 255, 255, .1); padding-left: 26px; }
.hero-stats .num { font-size: clamp(20px, 2.2vw, 28px); font-weight: 800; color: #fff; line-height: 1.2; }
.hero-stats .num small { font-size: .62em; color: var(--red-bright); font-weight: 700; }
.hero-stats .label { font-size: 13px; color: #9A9AA2; margin-top: 6px; letter-spacing: .05em; }

/* Hero 右侧玻璃卡片 */
.hero-visual { position: relative; }
.glass-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 20px; padding: 30px 28px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .45);
}
.glass-card .gc-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.glass-card .gc-title { font-size: 15px; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 10px; }
.glass-card .gc-title i { width: 8px; height: 8px; border-radius: 2px; background: var(--red); display: inline-block; }
.glass-card .gc-live { font-size: 12px; color: #9A9AA2; display: flex; align-items: center; gap: 6px; }
.glass-card .gc-live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #3DD68C; box-shadow: 0 0 8px #3DD68C; }

.gc-row { display: flex; align-items: center; gap: 14px; padding: 15px 0; border-top: 1px solid rgba(255, 255, 255, .08); }
.gc-row .ic { width: 40px; height: 40px; flex: none; border-radius: 10px; background: rgba(214, 31, 38, .16); color: var(--red-bright); display: grid; place-items: center; }
.gc-row .ic svg { width: 19px; height: 19px; }
.gc-row .t { font-size: 14px; color: #E8E8EC; font-weight: 600; }
.gc-row .d { font-size: 12px; color: #8E8E96; margin-top: 2px; }
.gc-row .pct { margin-left: auto; font-size: 18px; font-weight: 800; color: var(--red-bright); }


.hero-scroll {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  color: #8E8E96; font-size: 12px; letter-spacing: .2em; display: flex; flex-direction: column; align-items: center; gap: 8px; z-index: 3;
}
.hero-scroll::after { content: ""; width: 1px; height: 36px; background: linear-gradient(#8E8E96, transparent); animation: scrollHint 1.8s ease-in-out infinite; }
@keyframes scrollHint { 0% { transform: scaleY(0); transform-origin: top; } 45% { transform: scaleY(1); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- 内页 Page Hero ---------- */
.page-hero {
  position: relative; background: var(--black); color: #fff; overflow: hidden;
  padding: calc(var(--header-h) + 64px) 0 72px;
}
.page-hero::before {
  content: ""; position: absolute; top: -180px; right: -120px;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(214, 31, 38, .35), transparent 65%);
  pointer-events: none;
}
.page-hero::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(214, 31, 38, .5), transparent);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: #fff; margin: 16px 0 12px; letter-spacing: .01em; }
.page-hero .lead { color: #B9B9C0; max-width: 660px; line-height: 1.9; font-size: 16px; }

.breadcrumb { font-size: 14px; color: #8E8E96; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumb a { color: #9A9AA2; transition: .2s; }
.breadcrumb a:hover { color: var(--red-bright); }
.breadcrumb span { color: #fff; }
.breadcrumb i { font-style: normal; color: #5A5A62; }

/* ---------- 卡片 ---------- */
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 30px; transition: all .3s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }

.icon-box {
  width: 58px; height: 58px; border-radius: 15px;
  background: var(--red-light); color: var(--red);
  display: grid; place-items: center;
}
.icon-box svg { width: 26px; height: 26px; }
.icon-box.on-dark { background: rgba(214, 31, 38, .18); }

.card h3 { font-size: 19px; font-weight: 700; color: var(--text); margin: 22px 0 10px; }
.card p { font-size: 14.5px; line-height: 1.85; color: var(--text-2); }

.more-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 14px; font-weight: 600; color: var(--red); transition: gap .25s; }
.more-link:hover { gap: 10px; }
.more-link svg { width: 15px; height: 15px; }

/* 服务卡片（带图） */
.service-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: all .3s var(--ease); display: flex; flex-direction: column;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.service-card .thumb { aspect-ratio: 16 / 9; overflow: hidden; position: relative; }
.service-card .thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(11, 11, 14, .6)); }
.service-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.service-card:hover .thumb img { transform: scale(1.06); }
.service-card .thumb .idx {
  position: absolute; left: 18px; bottom: 14px; z-index: 2;
  font-size: 13px; font-weight: 700; color: #fff; letter-spacing: .08em;
}
.service-card .body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.service-card h3 { font-size: 19px; font-weight: 700; color: var(--text); display: flex; align-items: center; gap: 10px; }
.service-card h3 .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--red); flex: none; }
.service-card .desc { font-size: 14px; color: var(--text-2); line-height: 1.85; margin-top: 10px; }
.service-card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

.tag { font-size: 12px; padding: 4px 11px; border-radius: 999px; background: var(--bg-alt); color: var(--text-2); border: 1px solid var(--border); }
.tag.red { background: var(--red-light); color: var(--red); border-color: transparent; }

/* ---------- 业务分类卡片（首页核心业务） ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.biz-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 28px; display: flex; flex-direction: column;
  transition: all .3s var(--ease);
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.biz-card .biz-head { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.biz-card .biz-ic {
  width: 56px; height: 56px; flex: none; border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.biz-card .biz-ic img { width: 100%; height: 100%; object-fit: cover; display: block; }
.biz-card .biz-head h3 { font-size: 19px; font-weight: 800; color: var(--text); }
.biz-card .biz-head p { font-size: 12.5px; color: var(--text-3); margin-top: 4px; line-height: 1.5; }
.biz-card .biz-items { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.biz-card .biz-items li {
  font-size: 12.5px; color: var(--text-2); background: var(--bg-alt);
  border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px; line-height: 1.4;
  transition: all .25s;
}
.biz-card .biz-items li:hover { background: var(--red-light); color: var(--red); border-color: transparent; }
.biz-card .more-link { margin-top: 20px; }

/* ---------- 数据带 ---------- */
.stats-band { position: relative; background: var(--black); color: #fff; padding: 78px 0; overflow: hidden; }
.stats-band::before {
  content: ""; position: absolute; top: -160px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 400px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(214, 31, 38, .22), transparent 70%);
}
.stats-band .grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center; }
.stats-band .num { font-size: clamp(26px, 3.2vw, 28px); font-weight: 800; color: #fff; line-height: 1.1; }
.stats-band .num small { font-size: .6em; color: var(--red-bright); font-weight: 700; }
.stats-band .label { margin-top: 10px; font-size: 14px; color: #9A9AA2; letter-spacing: .08em; }

/* ---------- 特性网格 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 28px; transition: all .3s var(--ease); }
.feature:hover { box-shadow: var(--shadow-md); border-color: transparent; transform: translateY(-4px); }
.feature h3 { font-size: 17px; font-weight: 700; color: var(--text); margin: 18px 0 8px; display: flex; align-items: center; gap: 10px; }
.feature h3 .fno { font-size: 12px; color: var(--red); font-weight: 700; letter-spacing: .1em; }
.feature p { font-size: 14px; color: var(--text-2); line-height: 1.85; }

/* ---------- 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(--border); border-radius: var(--radius); padding: 30px 26px; transition: all .3s var(--ease); }
.step:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.step .num {
  font-size: 36px; font-weight: 800; color: transparent; -webkit-text-stroke: 1.4px var(--red);
  line-height: 1;
}
.step h3 { font-size: 17px; font-weight: 700; color: var(--text); margin: 16px 0 8px; }
.step p { font-size: 13.5px; color: var(--text-2); line-height: 1.8; }
.step::after {
  content: ""; position: absolute; top: 42px; right: -14px; width: 24px; height: 2px;
  background: repeating-linear-gradient(90deg, var(--red) 0 4px, transparent 4px 8px);
}
.step:last-child::after { display: none; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 26px; transition: all .3s var(--ease);
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); }
.news-card .nc-meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--text-3); margin-bottom: 14px; }
.news-card .nc-cat { background: var(--red-light); color: var(--red); font-weight: 600; padding: 3px 10px; border-radius: 999px; font-size: 12px; }
.news-card h3 { font-size: 17px; font-weight: 700; color: var(--text); line-height: 1.6; margin-bottom: 10px; }
.news-card h3 a:hover { color: var(--red); }
.news-card .nc-ex { font-size: 13.5px; color: var(--text-2); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* 新闻列表页 */
.news-cats { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 44px; }
.news-cats button {
  padding: 9px 22px; border-radius: 999px; font-size: 14px; font-weight: 500;
  border: 1px solid var(--border); color: var(--text-2); background: #fff; transition: all .25s;
}
.news-cats button:hover { border-color: var(--red); color: var(--red); }
.news-cats button.active { background: var(--red); color: #fff; border-color: var(--red); }

.news-list { max-width: 920px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.news-item {
  display: flex; gap: 28px; align-items: center;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 28px; transition: all .3s var(--ease);
}
.news-item:hover { box-shadow: var(--shadow-md); transform: translateX(6px); border-color: transparent; }
.news-item .date { flex: none; width: 92px; text-align: center; border-right: 1px dashed var(--border); padding-right: 26px; }
.news-item .date .d { font-size: 34px; font-weight: 800; color: var(--red); line-height: 1.1; }
.news-item .date .m { font-size: 13px; color: var(--text-3); letter-spacing: .12em; margin-top: 4px; }
.news-item .ni-main { flex: 1; min-width: 0; }
.news-item .ni-tags { display: flex; gap: 8px; margin-bottom: 8px; }
.news-item h3 { font-size: 17px; font-weight: 700; color: var(--text); line-height: 1.6; }
.news-item h3 a:hover { color: var(--red); }
.news-item .ni-ex { font-size: 13.5px; color: var(--text-2); margin-top: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 常见问答列表 */
.faq-list { max-width: 920px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-list .faq-item {
  display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: nowrap;
  background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--red);
  border-radius: var(--radius); padding: 20px 26px; transition: all .3s var(--ease);
}
.faq-list .faq-item:hover { box-shadow: var(--shadow-md); transform: translateX(6px); }
.faq-list .faq-item h3 {
  flex: 0 0 auto; max-width: 38%; min-width: 0;
  font-size: 16px; font-weight: 600; color: var(--text); line-height: 1.6;
}
.faq-list .faq-item h3 a { color: inherit; transition: color .2s; display: inline; }
.faq-list .faq-item h3 a:hover { color: var(--red); }
.faq-list .faq-item .faq-excerpt {
  flex: 1 1 auto; min-width: 0;
  font-size: 14px; line-height: 1.7; color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.faq-list .faq-item time { flex: none; font-size: 13px; color: var(--text-3); white-space: nowrap; }
.faq-list .faq-item .faq-more-link {
  flex: none;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--red);
  white-space: nowrap;
  transition: color .2s;
}
.faq-list .faq-item .faq-more-link:hover { color: var(--red-dark); }
.faq-more { margin-top: 26px; text-align: center; }
.faq-more a { display: inline-block; font-size: 14.5px; font-weight: 600; color: var(--red); border: 1px solid rgba(214, 31, 38, .35); border-radius: 999px; padding: 10px 28px; transition: all .25s; }
.faq-more a:hover { background: var(--red); color: #fff; box-shadow: var(--shadow-sm); }

/* 精选文章 */
.news-feature {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 0;
  background: var(--black); color: #fff; border-radius: 20px; overflow: hidden;
  margin-bottom: 56px;
}
.news-feature .nf-img { position: relative; min-height: 320px; }
.news-feature .nf-img img { width: 100%; height: 100%; object-fit: cover; opacity: .85; }
.news-feature .nf-img::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 90px;
  background: linear-gradient(0deg, rgba(11, 11, 14, .65), transparent);
}
.news-feature .nf-body { padding: 44px 44px; display: flex; flex-direction: column; justify-content: center; }
.news-feature .nf-cat { align-self: flex-start; background: var(--red); color: #fff; padding: 4px 14px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.news-feature h3 { font-size: 24px; font-weight: 800; color: #fff; margin: 18px 0 12px; line-height: 1.5; }
.news-feature p { color: #B9B9C0; font-size: 14.5px; line-height: 1.9; }
.news-feature .nf-date { color: #8E8E96; font-size: 13px; margin-top: 22px; display: flex; align-items: center; gap: 10px; }

/* ---------- 客户案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card {
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid var(--border); border-radius: 16px; overflow: hidden;
  cursor: pointer; transition: all .3s var(--ease); outline: none; position: relative;
}
.case-card:hover, .case-card:focus-visible { box-shadow: var(--shadow-md); transform: translateY(-5px); border-color: transparent; }
.case-card .cc-thumb { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #16161A; }
.case-card .cc-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.case-card:hover .cc-thumb img { transform: scale(1.05); }
.case-card .cc-cat {
  position: absolute; left: 14px; top: 14px; z-index: 2;
  background: var(--red); color: #fff; font-size: 12px; font-weight: 600;
  padding: 4px 12px; border-radius: 999px; letter-spacing: .02em;
}
.case-card .cc-body { padding: 22px 24px 20px; display: flex; flex-direction: column; flex: 1; }
.case-card .cc-meta { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--text-3); margin-bottom: 10px; flex-wrap: wrap; }
.case-card .cc-meta span + span::before { content: "·"; margin-right: 10px; color: var(--border); }
.case-card .cc-body h3 { font-size: 16.5px; font-weight: 700; color: var(--text); line-height: 1.6; margin-bottom: 10px; }
.case-card .cc-ex { font-size: 13.5px; color: var(--text-2); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 16px; }
.case-card .cc-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; border-top: 1px dashed var(--border); padding-top: 14px; }
.case-card .cc-more { color: var(--red); font-size: 13.5px; font-weight: 600; position: relative; z-index: 2; }
.case-card .cc-foot time { font-size: 12.5px; color: var(--text-3); }
.case-card .cc-link { position: absolute; inset: 0; z-index: 1; }

/* 案例详情弹窗 */
.case-modal { position: fixed; inset: 0; z-index: 200; display: none; }
.case-modal.show { display: block; }
.case-modal .cm-mask { position: absolute; inset: 0; background: rgba(11, 11, 14, .6); backdrop-filter: blur(3px); }
.case-modal .cm-box {
  position: absolute; inset: 0; margin: auto; width: min(760px, calc(100% - 32px));
  max-height: 88vh; background: #fff; border-radius: 18px; overflow-y: auto;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .35); animation: cmIn .28s var(--ease);
}
@keyframes cmIn { from { opacity: 0; transform: translateY(24px) scale(.98); } to { opacity: 1; transform: none; } }
.case-modal .cm-close {
  position: sticky; top: 14px; margin-left: calc(100% - 52px); z-index: 5;
  width: 38px; height: 38px; border-radius: 50%; border: none; cursor: pointer;
  background: #16161A; color: #fff; font-size: 20px; line-height: 1;
  box-shadow: var(--shadow-md); transition: transform .2s;
}
.case-modal .cm-close:hover { transform: rotate(90deg); }
.case-modal .cm-article { padding: 0 40px 40px; }
.case-modal .cm-cover { border-radius: 14px; overflow: hidden; margin-bottom: 26px; }
.case-modal .cm-cover img { width: 100%; display: block; aspect-ratio: 16 / 8; object-fit: cover; }
.case-modal .cm-tags { display: flex; gap: 8px; margin-bottom: 14px; }
.case-modal .cm-head h2 { font-size: 26px; font-weight: 800; color: var(--text); line-height: 1.45; }
.case-modal .cm-meta { display: flex; gap: 18px; color: var(--text-3); font-size: 13px; margin: 14px 0 24px; padding-bottom: 18px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.case-modal .cm-content { font-size: 15px; line-height: 2; color: var(--text-2); }
.case-modal .cm-content h2 { font-size: 20px; color: var(--text); margin: 26px 0 12px; font-weight: 700; }
.case-modal .cm-content p { margin-bottom: 14px; }
.case-modal .cm-content ul { margin: 0 0 16px; padding-left: 20px; list-style: disc; }
.case-modal .cm-content ul li { margin-bottom: 6px; }
.case-modal .cm-foot { margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--border); }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: .92fr 1.08fr; gap: 60px; align-items: stretch; }
.about-intro .img-wrap { position: relative; display: flex; }
.about-intro .img-wrap img { width: 100%; height: 100%; min-height: 380px; max-height: 640px; object-fit: cover; border-radius: 18px; box-shadow: var(--shadow-lg); }
.about-intro .img-wrap::before {
  content: ""; position: absolute; inset: -18px auto auto -18px; width: 55%; height: 55%;
  border: 2px solid var(--red); border-radius: 18px; z-index: -1;
}
.about-intro .img-wrap::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 90px;
  background: linear-gradient(0deg, rgba(11, 11, 14, .55), transparent);
  border-radius: 0 0 18px 18px;
}
.about-intro .exp-badge {
  position: absolute; right: -18px; bottom: -20px; background: var(--red); color: #fff;
  border-radius: 14px; padding: 18px 24px; box-shadow: var(--shadow-lg); text-align: center;
}
.about-intro .exp-badge .n { font-size: 30px; font-weight: 800; line-height: 1; }
.about-intro .exp-badge .t { font-size: 12px; margin-top: 6px; letter-spacing: .1em; opacity: .9; }

.about-intro .ai-tag { display: inline-flex; gap: 8px; align-items: center; color: var(--red); font-size: 13px; font-weight: 600; letter-spacing: .16em; margin-bottom: 14px; }
.about-intro h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 800; color: var(--text); line-height: 1.3; margin-bottom: 18px; }
.about-intro p { color: var(--text-2); line-height: 2; margin-bottom: 16px; font-size: 16px; }

.mvv { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

/* 时间线 */
.timeline { position: relative; max-width: 900px; margin: 0 auto; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--red), var(--border) 80%); }
.tl-item { position: relative; padding: 0 0 44px 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -31px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--red); box-shadow: 0 0 0 5px var(--red-light);
}
.tl-item .year { font-size: 15px; font-weight: 800; color: var(--red); letter-spacing: .06em; }
.tl-item h3 { font-size: 18px; font-weight: 700; color: var(--text); margin: 6px 0 8px; }
.tl-item p { font-size: 14px; color: var(--text-2); line-height: 1.85; max-width: 640px; }

/* 团队 */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.team-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; text-align: center; transition: all .3s var(--ease); }
.team-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); }
.team-card .avatar {
  width: 84px; height: 84px; margin: 0 auto 18px; border-radius: 50%;
  background: linear-gradient(135deg, var(--red), var(--black));
  color: #fff; font-size: 30px; font-weight: 800;
  display: grid; place-items: center;
  box-shadow: 0 10px 26px rgba(214, 31, 38, .3);
}
.team-card h3 { font-size: 17px; font-weight: 700; color: var(--text); }
.team-card .role { font-size: 13px; color: var(--red); font-weight: 600; margin-top: 4px; letter-spacing: .05em; }
.team-card .bio { font-size: 13px; color: var(--text-3); margin-top: 12px; line-height: 1.8; }

/* 资质 */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cert { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 20px; text-align: center; transition: all .3s var(--ease); }
.cert:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.cert .ci { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 14px; background: var(--red-light); color: var(--red); display: grid; place-items: center; }
.cert .ci svg { width: 24px; height: 24px; }
.cert h3 { font-size: 15px; font-weight: 700; color: var(--text); }
.cert p { font-size: 12.5px; color: var(--text-3); margin-top: 6px; }

/* 资质荣誉图文卡片（三排十二张） */
.cert-grid-12 { grid-template-columns: repeat(4, 1fr); gap: 26px; }
.cert-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; margin: 0; transition: all .3s var(--ease);
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.cert-card .cc-img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-alt); border-bottom: 1px solid var(--border); }
.cert-card .cc-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s var(--ease); }
.cert-card:hover .cc-img img { transform: scale(1.05); }
.cert-card figcaption { padding: 18px 18px 20px; text-align: center; }
.cert-card h3 { font-size: 15px; font-weight: 700; color: var(--text); line-height: 1.5; }
.cert-card p { font-size: 12.5px; color: var(--text-3); margin-top: 6px; line-height: 1.6; }
.cert-note { margin-top: 28px; text-align: center; font-size: 12.5px; color: var(--text-3); }

/* ---------- 产品服务 ---------- */
.svc-block { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding: 60px 0; }
.svc-block + .svc-block { border-top: 1px solid var(--border); }
.svc-block .img-wrap { position: relative; }
.svc-block .img-wrap img { border-radius: 18px; box-shadow: var(--shadow-md); }
.svc-block .img-wrap::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 80px;
  background: linear-gradient(0deg, rgba(11, 11, 14, .55), transparent); border-radius: 0 0 18px 18px;
}
.svc-block .img-wrap .sb-tag {
  position: absolute; left: 20px; top: 20px; background: rgba(11, 11, 14, .75);
  color: #fff; padding: 6px 14px; border-radius: 999px; font-size: 12px; letter-spacing: .12em; backdrop-filter: blur(6px);
}
.svc-block h2 { font-size: clamp(24px, 2.8vw, 32px); font-weight: 800; color: var(--text); line-height: 1.35; margin-bottom: 16px; }
.svc-block .sb-no { font-size: 13px; color: var(--red); font-weight: 700; letter-spacing: .2em; margin-bottom: 10px; display: block; }
.svc-block .sb-desc { color: var(--text-2); line-height: 1.95; margin-bottom: 22px; }
.svc-block .sb-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; margin-bottom: 26px; }
.svc-block .sb-feats li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-2); }
.svc-block .sb-feats svg { width: 17px; height: 17px; flex: none; margin-top: 4px; color: var(--red); }
.svc-block .sb-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }

/* ---------- CTA 条 ---------- */
.cta-band {
  position: relative; background: linear-gradient(115deg, var(--black) 0%, #23080A 55%, #3A0D10 100%);
  color: #fff; padding: 84px 0; text-align: center; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; top: -120px; left: 50%; transform: translateX(-50%);
  width: 720px; height: 360px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(214, 31, 38, .28), transparent 70%);
}
.cta-band .container { position: relative; z-index: 2; }
.cta-band h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; color: #fff; }
.cta-band p { color: #B9B9C0; margin: 16px auto 34px; max-width: 560px; line-height: 1.9; }
.cta-band .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer { background: var(--black); color: #C6C6CC; }
.footer-main { padding: 76px 0 56px; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.3fr; gap: 48px; }
.footer .f-logo { display: flex; align-items: center; gap: 12px; }
.footer .f-logo .logo-mark { width: 40px; height: 40px; font-size: 19px; }
.footer .f-logo .logo-name { color: #fff; }
.footer .f-desc { margin-top: 20px; font-size: 14px; line-height: 1.95; color: #8E8E96; max-width: 300px; }
.footer h4 { color: #fff; font-size: 15px; font-weight: 600; letter-spacing: .1em; margin-bottom: 22px; }
.footer .f-links li { line-height: 2.3; }
.footer .f-links a { font-size: 14px; color: #9A9AA2; transition: .2s; }
.footer .f-links a:hover { color: var(--red-bright); padding-left: 4px; }
.footer .f-contact li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 16px; font-size: 14px; color: #9A9AA2; line-height: 1.7; }
.footer .f-contact svg { width: 17px; height: 17px; flex: none; margin-top: 3px; color: var(--red-bright); }
.footer .f-contact a:hover { color: #fff; }
.footer .qr { display: inline-flex; flex-direction: column; align-items: center; gap: 10px; margin-top: 6px; }
.footer .qr-box {
  width: 96px; height: 96px; border-radius: 12px; background: #fff;
  display: grid; place-items: center; position: relative; overflow: hidden;
}
/* 后台上传二维码后启用：仅显示图片 */
.footer .qr-img {
  display: block; width: 96px; height: 96px;
  border-radius: 12px; object-fit: cover;
  background: #fff; padding: 4px; box-sizing: border-box;
}
.footer .qr-box::before,
.footer .qr-box::after {
  content: ""; position: absolute; background: var(--black);
}
.footer .qr-box .qr-grid {
  width: 70px; height: 70px; background:
    radial-gradient(var(--black) 2.5px, transparent 2.5px) 0 0 / 12px 12px;
  -webkit-mask-image: linear-gradient(45deg, #000 40%, transparent 40%);
          mask-image: linear-gradient(45deg, #000 40%, transparent 40%);
}
.footer .qr span { font-size: 12px; color: #8E8E96; }

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 22px 0; }
.footer-bottom .container { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #7C7C84; }
.footer-bottom a { color: #9A9AA2; transition: .2s; }
.footer-bottom a:hover { color: var(--red-bright); }
.footer-bottom .fb-links { display: flex; gap: 20px; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: start; }
.form-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 38px; box-shadow: var(--shadow-sm); }
.form-card h2 { font-size: 22px; font-weight: 800; color: var(--text); margin-bottom: 8px; }
.form-card .fc-sub { font-size: 14px; color: var(--text-3); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.form-group label i { color: var(--red); font-style: normal; margin-left: 2px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 15px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 14.5px; color: var(--text); background: #FAFAFB; transition: all .2s;
  appearance: none; -webkit-appearance: none;
}
.form-group select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A8A92' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 15px center; }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--red); background: #fff;
  box-shadow: 0 0 0 3px rgba(214, 31, 38, .12);
}
.form-group ::placeholder { color: #B4B4BA; }
.form-msg { display: none; margin-top: 16px; padding: 12px 16px; border-radius: 10px; font-size: 14px; }
.form-msg.ok { display: block; background: #EAF8F0; color: #12803B; border: 1px solid #B9E8CD; }
.form-msg.err { display: block; background: #FDEBEC; color: #B0151C; border: 1px solid #F5C2C5; }

.info-card { background: var(--black); color: #fff; border-radius: var(--radius); padding: 40px 36px; position: relative; overflow: hidden; }
.info-card::before {
  content: ""; position: absolute; top: -100px; right: -100px; width: 280px; height: 280px;
  border-radius: 50%; background: radial-gradient(circle, rgba(214, 31, 38, .3), transparent 70%);
}
.info-card h2 { font-size: 22px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.info-card .ic-sub { font-size: 14px; color: #8E8E96; margin-bottom: 24px; }
.info-card ul { position: relative; }
.info-card li { display: flex; gap: 16px; align-items: flex-start; padding: 18px 0; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.info-card li:last-child { border-bottom: none; }
.info-card .ic-ic { width: 42px; height: 42px; flex: none; border-radius: 11px; background: rgba(214, 31, 38, .18); color: var(--red-bright); display: grid; place-items: center; }
.info-card .ic-ic svg { width: 19px; height: 19px; }
.info-card .ic-t { font-size: 12px; color: #8E8E96; letter-spacing: .1em; }
.info-card .ic-v { font-size: 15px; color: #fff; font-weight: 600; margin-top: 3px; line-height: 1.6; }
.info-card .ic-v a:hover { color: var(--red-bright); }

/* 地图占位 */
.map-box {
  position: relative; height: 340px; border-radius: var(--radius); overflow: hidden;
  background:
    linear-gradient(rgba(11, 11, 14, .045) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, rgba(11, 11, 14, .045) 1px, transparent 1px) 0 0 / 40px 40px,
    var(--bg-alt);
  border: 1px solid var(--border);
}
.map-box .mb-pin {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -100%);
  width: 18px; height: 18px; background: var(--red); border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg); box-shadow: 0 0 0 6px rgba(214, 31, 38, .18);
}
.map-box .mb-pin::after { content: ""; position: absolute; left: 5px; top: 5px; width: 8px; height: 8px; border-radius: 50%; background: #fff; }
.map-box .mb-label {
  position: absolute; left: 50%; top: 66%; transform: translateX(-50%);
  background: var(--black); color: #fff; font-size: 13px; padding: 8px 16px;
  border-radius: 999px; box-shadow: var(--shadow-md); white-space: nowrap;
}

/* 常见问题 */
.faq { max-width: 860px; margin: 0 auto; }
.faq details { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; transition: all .3s; }
.faq details[open] { border-color: rgba(214, 31, 38, .4); box-shadow: var(--shadow-sm); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; cursor: pointer; font-size: 15.5px; font-weight: 600; color: var(--text);
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none; width: 28px; height: 28px; border-radius: 50%;
  background: var(--red-light); color: var(--red); font-size: 18px; font-weight: 700;
  display: grid; place-items: center; transition: all .3s;
}
.faq details[open] summary::after { transform: rotate(45deg); background: var(--red); color: #fff; }
.faq details .a { padding: 0 24px 22px; font-size: 14.5px; color: var(--text-2); line-height: 1.9; }

/* ---------- 新闻详情页 ---------- */
.article { max-width: 820px; margin: 0 auto; }
.article .art-meta { display: flex; align-items: center; gap: 16px; color: var(--text-3); font-size: 13.5px; padding: 18px 0; border-bottom: 1px solid var(--border); margin-bottom: 34px; flex-wrap: wrap; }
.article .art-meta .cat { background: var(--red-light); color: var(--red); font-weight: 600; padding: 3px 12px; border-radius: 999px; }
.article h2 { font-size: 24px; font-weight: 800; color: var(--text); margin: 34px 0 14px; }
.article p { font-size: 15.5px; line-height: 2.05; color: var(--text-2); margin-bottom: 18px; }
.article blockquote {
  margin: 26px 0; padding: 20px 24px; border-left: 4px solid var(--red);
  background: var(--bg-alt); border-radius: 0 12px 12px 0; color: var(--text); font-weight: 600;
}
.article figure { margin: 30px 0; }
.article figure img { border-radius: 14px; box-shadow: var(--shadow-md); }
.article figcaption { text-align: center; font-size: 12.5px; color: var(--text-3); margin-top: 10px; }
.article ul, .article ol { margin: 0 0 18px; padding-left: 22px; }
.article ul li, .article ol li { margin-bottom: 8px; line-height: 1.9; }
.article ul { list-style: disc; }
.article ol { list-style: decimal; }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--black); color: #fff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-md); cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .3s var(--ease);
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--red); }
.to-top svg { width: 18px; height: 18px; }

/* ---------- 滚动显现（已停用：内容默认直接显示，避免不显现问题） ---------- */
/* .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; } */
.reveal { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 64px; }
  .hero-visual { max-width: 520px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .step:nth-child(2)::after { display: none; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid-12 { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-band .grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .mvv { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: 1fr; gap: 56px; }
  .about-intro .img-wrap img { height: auto; min-height: 0; max-height: none; aspect-ratio: 3 / 2; }
  .svc-block { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .news-feature { grid-template-columns: 1fr; }
  .news-feature .nf-img { min-height: 240px; }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 110;
    width: min(78vw, 320px); background: var(--black);
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 96px 24px 40px;
    transform: translateX(100%); transition: transform .35s var(--ease);
    box-shadow: -20px 0 60px rgba(0, 0, 0, .35);
  }
  .nav.open { transform: translateX(0); }
  .nav a { padding: 13px 16px; font-size: 16px; border-radius: 10px; color: rgba(255, 255, 255, .9); }
  .nav a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
  .nav a.active { color: #fff; background: var(--red); }
  .nav a.active::after { display: none; }
  .nav-mask { background: rgba(11, 11, 14, .65); }
}

@media (max-width: 640px) {
  .section { padding: 68px 0; }
  .hero { padding: calc(var(--header-h) + 40px) 0 72px; min-height: auto; }
  .hero-stats { flex-wrap: wrap; gap: 18px 0; }
  .hero-stats .stat { flex: 1 1 46%; }
  .hero-stats .stat:nth-child(2n+1) { border-left: none !important; padding-left: 0 !important; }
  .hero-stats .stat:nth-child(n+3) { border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 18px; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step::after { display: none; }
  .news-grid { grid-template-columns: 1fr; }
  .biz-grid { grid-template-columns: 1fr; }
  .cert-grid-12 { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .case-modal .cm-article { padding: 0 20px 28px; }
  .stats-band .grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .svc-block .sb-feats { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 16px; }
  .news-item .date { width: auto; border-right: none; border-bottom: 1px dashed var(--border); padding: 0 0 12px; display: flex; gap: 10px; align-items: baseline; }
  .news-item .date .d { font-size: 24px; }
  .faq-item { flex-direction: column; align-items: flex-start; gap: 8px; padding: 18px 20px; }
  .faq-item time { align-self: flex-end; }
  .faq-list .faq-item { flex-wrap: wrap; gap: 10px; }
  .faq-list .faq-item h3 { flex: 1 1 100%; max-width: none; }
  .faq-list .faq-item .faq-excerpt { flex: 1 1 100%; order: 3; }
  .faq-list .faq-item time { flex: none; order: 2; align-self: flex-end; }
  .page-hero { padding: calc(var(--header-h) + 44px) 0 52px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .01ms !important; }
}

/* ---------- 问答答案与手风琴（2026-08-26 新增） ---------- */
/* 其他页面区块：问答项允许换行，答案整行展示 */
.faq-item { flex-wrap: wrap; }
.faq-item .faq-a-show { flex: 1 1 100%; order: 3; margin-top: 10px; display: block; }
.faq-a p { margin: 0 0 8px; font-size: 14.5px; line-height: 1.9; color: var(--text-2); }
.faq-a p:last-child { margin-bottom: 0; }
.faq-a-empty { color: var(--text-3); font-size: 13px; font-style: italic; }

/* 问答页手风琴：默认只见问题，点击展开答案 */
.faq-item.faq-acc { display: block; }
.faq-acc .faq-q { min-width: 0; }
.faq-q-btn {
  display: flex; width: 100%; justify-content: space-between; align-items: center; gap: 14px;
  background: none; border: 0; padding: 0; font: inherit; font-size: 16px; font-weight: 600;
  color: var(--text); line-height: 1.6; text-align: left; cursor: pointer;
}
.faq-q-btn:hover { color: var(--red); }
.faq-arrow { flex: none; font-size: 12px; color: var(--text-3); transition: transform .25s var(--ease); }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-acc .faq-a { display: none; margin-top: 12px; }
.faq-acc.open .faq-a { display: block; }
.faq-acc time { display: block; margin-top: 10px; font-size: 13px; color: var(--text-3); }

/* 问答页分页 */
.faq-pager { display: flex; justify-content: center; align-items: center; gap: 10px; margin-top: 26px; }
.faq-page-btn {
  min-width: 38px; height: 38px; padding: 0 12px; border: 1px solid var(--border); border-radius: 10px;
  background: #fff; color: var(--text-2); font-size: 14px; cursor: pointer; transition: all .2s;
}
.faq-page-btn:hover { border-color: var(--red); color: var(--red); }
.faq-page-btn.cur { background: var(--red); border-color: var(--red); color: #fff; cursor: default; }

/* ---------- 右下角悬浮咨询 ---------- */
.float-consult {
  position: fixed; right: 22px; bottom: 92px; z-index: 99;
  display: flex; flex-direction: column; align-items: flex-end; gap: 10px;
  font-family: var(--font), system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.float-consult-btn {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--red); color: #fff; border: none;
  box-shadow: 0 8px 24px rgba(214, 31, 38, .35);
  display: grid; place-items: center; cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.float-consult-btn:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 12px 32px rgba(214, 31, 38, .45); }
.float-consult-btn svg { width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.float-consult-label {
  display: block; padding: 8px 14px; border-radius: 8px;
  background: var(--black); color: #fff; font-size: 13px; font-weight: 500;
  box-shadow: var(--shadow-md); white-space: nowrap; opacity: 0; transform: translateX(10px);
  transition: opacity .25s, transform .25s; pointer-events: none;
}
.float-consult:hover .float-consult-label { opacity: 1; transform: translateX(0); }
.float-consult-menu {
  position: absolute; right: 0; bottom: 66px;
  min-width: 150px; padding: 8px; margin: 0; list-style: none;
  background: #fff; border: 1px solid var(--border); border-radius: 14px;
  box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .2s, transform .2s, visibility .2s;
}
.float-consult.open .float-consult-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.float-consult-menu li a,
.float-consult-menu li button {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 10px 12px; border-radius: 10px; border: 0; background: transparent;
  font-size: 14px; color: var(--text); text-decoration: none; cursor: pointer; text-align: left;
}
.float-consult-menu li a:hover,
.float-consult-menu li button:hover { background: var(--red-light); color: var(--red); }
.float-consult-menu svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; }
@media (max-width: 900px) {
  .float-consult { right: 14px; bottom: 78px; }
  .float-consult-btn { width: 50px; height: 50px; }
  .float-consult-btn svg { width: 22px; height: 22px; }
  .float-consult-label { display: none; }
}