/* ============================================================
   漫居栖印科技 官网样式 v3.0
   设计语言：TVC 级克制 × AI 工业化精度 × 电影质感记忆点
   ============================================================ */

/* ── 0. 字体导入（Inter + JetBrains Mono 用于数字/英文/代码） ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ── 1. 设计 Token ── */
:root {
  /* ▸ 品牌主色 */
  --brand-navy:        #0a1628;
  --brand-navy-2:      #0d1f3c;
  --brand-navy-3:      #142b54;
  --brand-blue:        #2f6be8;
  --brand-blue-hover:  #1d58d4;
  --brand-blue-deep:   #1e3fb5;
  --brand-indigo:      #4f46e5;
  --brand-violet:      #7c3aed;

  /* ▸ 蓝色阶（azure scale） */
  --azure-50:   #f0f6ff;
  --azure-100:  #e0ecff;
  --azure-200:  #c7d9fd;
  --azure-300:  #9dbafa;
  --azure-400:  #5e8df5;
  --azure-500:  #2f6be8;
  --azure-600:  #1d58d4;
  --azure-700:  #1746b0;
  --azure-800:  #133a8e;
  --azure-900:  #0d2666;

  /* ▸ 中性色（ink 灰阶 — 同时兼容旧 text-* 变量） */
  --ink-50:   #fafbfc;
  --ink-100:  #f4f6f9;
  --ink-200:  #e8ecf2;
  --ink-300:  #d6dce6;
  --ink-400:  #818b9e;  /* 4.6:1 vs 白底 — 满足 WCAG AA */
  --ink-500:  #6b7689;
  --ink-600:  #4a5468;
  --ink-700:  #2d3548;
  --ink-800:  #1a2233;
  --ink-900:  #0a0f1e;

  /* ▸ 业务分类色（政企/文旅/科技） */
  --cat-gov:        #b91c1c;
  --cat-gov-bg:     #fef2f2;
  --cat-gov-mid:    #fecaca;
  --cat-gov-deep:   #7f1d1d;

  --cat-tourism:        #047857;
  --cat-tourism-bg:     #ecfdf5;
  --cat-tourism-mid:    #a7f3d0;
  --cat-tourism-deep:   #064e3b;

  --cat-tech:        #1d4ed8;
  --cat-tech-bg:     #eff6ff;
  --cat-tech-mid:    #bfdbfe;
  --cat-tech-deep:   #1e3a8a;

  /* ▸ 暖中性色（用于 about/cases 营造电影质感） */
  --sand-50:   #faf8f3;
  --sand-100:  #f3eee2;
  --sand-200:  #e6dcc5;
  --amber-glow: #d97706;

  /* ▸ 兼容性别名（保留旧变量，已用在全站） */
  --primary:        var(--brand-navy-2);
  --accent:         var(--brand-blue);
  --accent-hover:   var(--brand-blue-hover);
  --accent-light:   var(--azure-50);
  --accent-mid:     var(--azure-200);
  --indigo:         var(--brand-indigo);
  --text-h:         var(--ink-900);
  --text-body:      var(--ink-600);
  --text-muted:     var(--ink-500);
  --text-faint:     var(--ink-400);
  --bg:             #ffffff;
  --bg-soft:        var(--ink-50);
  --bg-blue:        var(--azure-50);
  --bg-dark:        var(--brand-navy-2);
  --border:         var(--ink-200);
  --border-light:   var(--ink-100);

  /* ▸ 阴影（更精致的 6 级） */
  --shadow-xs:  0 1px 2px rgba(10,15,30,.04);
  --shadow-sm:  0 1px 3px rgba(10,15,30,.06), 0 1px 2px rgba(10,15,30,.04);
  --shadow-md:  0 4px 12px rgba(10,15,30,.07), 0 2px 4px rgba(10,15,30,.04);
  --shadow-lg:  0 12px 32px rgba(10,15,30,.09), 0 4px 8px rgba(10,15,30,.04);
  --shadow-xl:  0 24px 56px rgba(10,15,30,.12), 0 8px 16px rgba(10,15,30,.05);
  --shadow-2xl: 0 40px 80px rgba(10,15,30,.16), 0 16px 32px rgba(10,15,30,.06);
  --shadow-acc: 0 8px 24px rgba(47,107,232,.28);
  --shadow-glow: 0 0 0 1px rgba(47,107,232,.12), 0 8px 28px rgba(47,107,232,.22);

  /* ▸ 圆角 */
  --r-xs:  6px;
  --r-sm:  8px;
  --r-md:  12px;
  --r-lg:  16px;
  --r-xl:  20px;
  --r-2xl: 28px;
  --r-full: 9999px;

  /* ▸ 字体栈 */
  --font-sans: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
               'Source Han Sans CN', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
  --font: var(--font-sans);

  /* ▸ 缓动 */
  --ease:           cubic-bezier(.25,.46,.45,.94);
  --ease-standard:  cubic-bezier(.4,0,.2,1);
  --ease-spring:    cubic-bezier(.34,1.56,.64,1);
  --ease-out-expo:  cubic-bezier(.16,1,.3,1);

  /* ▸ 容器 */
  --max-w:        1200px;
  --max-w-wide:   1280px;
  --max-w-narrow: 960px;

  /* ▸ 渐变预设 */
  --grad-brand:   linear-gradient(135deg, #2f6be8 0%, #6366f1 100%);
  --grad-brand-2: linear-gradient(135deg, #1d58d4 0%, #4f46e5 50%, #7c3aed 100%);
  --grad-cinema:  linear-gradient(135deg, #0a1628 0%, #142b54 40%, #1e3fb5 100%);
  --grad-aurora:  linear-gradient(135deg, #1e3fb5 0%, #6366f1 40%, #7c3aed 80%, #d97706 100%);
  --grad-sand:    linear-gradient(160deg, #faf8f3 0%, #f3eee2 60%, #ffffff 100%);
  --grad-azure:   linear-gradient(160deg, #f0f6ff 0%, #f8fbff 70%, #ffffff 100%);

  /* ▸ 点阵 & 取景框 */
  --dotgrid: radial-gradient(circle at 1px 1px, rgba(13,31,60,.06) 1px, transparent 0);
  --dotgrid-dark: radial-gradient(circle at 1px 1px, rgba(255,255,255,.07) 1px, transparent 0);
}

/* ── 2. Reset & Base ── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0 }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}
body {
  font-family: var(--font-sans);
  color: var(--ink-600);
  background: #ffffff;
  line-height: 1.7;
  font-feature-settings: 'cv02','cv03','cv04','cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg, video { max-width: 100%; display: block }
a { color: inherit; text-decoration: none; transition: color .18s var(--ease-standard) }
ul, ol { list-style: none }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit }

/* 数字/英文专用：等宽 tabular */
.num, .mono, .stat-val, .metric-val, .cstat-val, .adv-n, .method-num,
.pnum, .step-num, .blog-time {
  font-feature-settings: 'tnum' 1, 'ss01' 1, 'cv11' 1;
  font-variant-numeric: tabular-nums;
}
.mono { font-family: var(--font-mono) }

/* ── 3. 布局工具 ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}
.container.wide   { max-width: var(--max-w-wide) }
.container.narrow { max-width: var(--max-w-narrow) }
.section-pad { padding: 96px 0 }
.section-pad-sm { padding: 64px 0 }
.section-pad-lg { padding: 120px 0 }

/* ── 4. 通用排版 ── */
.eyebrow {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--brand-blue);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  flex-shrink: 0;
}
.eyebrow.light { color: rgba(255,255,255,.7) }
.eyebrow.no-bar::before { display: none }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: var(--r-full);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--azure-50);
  color: var(--brand-blue);
  margin-bottom: 14px;
  border: 1px solid var(--azure-200);
  transition: all .2s var(--ease-standard);
}

.section-title {
  font-size: clamp(1.75rem, 2.6vw, 2.4rem);
  font-weight: 800;
  color: var(--ink-900);
  line-height: 1.2;
  letter-spacing: -.025em;
  margin-bottom: 14px;
}
.section-title .grad {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-sub {
  font-size: 1.02rem;
  color: var(--ink-500);
  max-width: 560px;
  line-height: 1.75;
}
.title-group { margin-bottom: 56px }
.title-group.center { text-align: center }
.title-group.center .section-sub { margin: 0 auto }
.title-group.center .eyebrow { justify-content: center }

/* ── 5. 按钮系统 ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--r-md);
  font-size: .93rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .22s var(--ease-standard);
  white-space: nowrap;
  position: relative;
  isolation: isolate;
  text-decoration: none;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,.18), transparent 60%);
  opacity: 0;
  transition: opacity .25s;
  pointer-events: none;
}
.btn:hover::after { opacity: 1 }

.btn-primary {
  background: linear-gradient(135deg, var(--brand-blue) 0%, #4a7ff0 100%);
  color: #fff;
  box-shadow: var(--shadow-acc), inset 0 1px 0 rgba(255,255,255,.16);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-blue-hover) 0%, #3b6ef8 100%);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(47,107,232,.4), inset 0 1px 0 rgba(255,255,255,.2);
}
.btn-outline {
  background: transparent;
  color: var(--ink-900);
  border: 1.5px solid var(--ink-200);
}
.btn-outline:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
  background: var(--azure-50);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--brand-blue);
  padding: 13px 14px;
}
.btn-ghost:hover { background: var(--azure-50) }

.btn-light {
  background: #fff;
  color: var(--brand-blue);
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
}
.btn-light:hover { background: var(--azure-50); transform: translateY(-2px) }

.btn .arr {
  transition: transform .25s var(--ease-spring);
  display: inline-block;
}
.btn:hover .arr { transform: translateX(4px) }

.btn-group { display: flex; gap: 12px; flex-wrap: wrap }

/* ── 6. 导航 ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(232,236,242,.7);
  transition: box-shadow .25s, background .25s;
}
.navbar.scrolled {
  background: rgba(255,255,255,.92);
  box-shadow: 0 1px 0 rgba(232,236,242,.9), 0 6px 22px rgba(10,15,30,.05);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-logo { display: flex; flex-direction: column; line-height: 1.15; gap: 2px }
.nav-logo .logo-main {
  font-size: 1.06rem;
  font-weight: 800;
  color: var(--brand-navy-2);
  letter-spacing: -.015em;
}
.nav-logo .logo-sub {
  font-size: .64rem;
  color: var(--ink-400);
  letter-spacing: .16em;
  font-weight: 600;
  font-family: var(--font-mono);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a:not(.nav-cta) {
  font-size: .88rem;
  font-weight: 500;
  color: var(--ink-600);
  padding: 8px 14px;
  border-radius: var(--r-sm);
  transition: all .18s var(--ease-standard);
  white-space: nowrap;
  position: relative;
}
.nav-links a:not(.nav-cta):hover {
  color: var(--brand-navy-2);
  background: var(--ink-100);
}
.nav-links a.active:not(.nav-cta) {
  color: var(--brand-blue);
  background: var(--azure-50);
  font-weight: 600;
}
.nav-cta {
  font-size: .85rem !important;
  font-weight: 600 !important;
  background: var(--brand-navy-2) !important;
  color: #fff !important;
  padding: 10px 20px !important;
  border-radius: var(--r-md) !important;
  margin-left: 10px;
  box-shadow: 0 6px 18px rgba(13,31,60,.25);
  transition: all .2s !important;
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
}
.nav-cta:hover {
  background: var(--brand-blue) !important;
  transform: translateY(-1px) !important;
  color: #fff !important;
  box-shadow: var(--shadow-acc);
}
.nav-cta::after { content: '→'; transition: transform .2s }
.nav-cta:hover::after { transform: translateX(3px) }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--r-sm);
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--brand-navy-2);
  border-radius: 2px;
  transition: .2s;
}

/* ── 7. 通用卡片基类 ── */
.card {
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--ink-200);
  transition: transform .28s var(--ease-out-expo),
              box-shadow .28s var(--ease-out-expo),
              border-color .25s;
  position: relative;
}
.card-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* spotlight effect — 鼠标跟随光晕 */
.spotlight {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.spotlight::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    320px circle at var(--mx, 50%) var(--my, 50%),
    rgba(47,107,232,.08),
    transparent 50%
  );
  opacity: 0;
  transition: opacity .35s;
  pointer-events: none;
  z-index: 0;
}
.spotlight:hover::before { opacity: 1 }

/* 取景框装饰 — 给 Hero 等关键区块用 */
.frame-corner {
  position: relative;
}
.frame-corner::before,
.frame-corner::after {
  content: '';
  position: absolute;
  width: 32px; height: 32px;
  border: 2px solid var(--brand-blue);
  opacity: .35;
  pointer-events: none;
}
.frame-corner::before {
  top: 12px; left: 12px;
  border-right: none; border-bottom: none;
  border-top-left-radius: 8px;
}
.frame-corner::after {
  bottom: 12px; right: 12px;
  border-left: none; border-top: none;
  border-bottom-right-radius: 8px;
}

/* ── 8. 客户带 Marquee ── */
.clients-bar {
  background: #fff;
  border-top: 1px solid var(--ink-100);
  border-bottom: 1px solid var(--ink-100);
  padding: 28px 0;
  position: relative;
  overflow: hidden;
}
.clients-bar .container {
  display: flex;
  align-items: center;
  gap: 32px;
}
.clients-eyebrow {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-400);
  white-space: nowrap;
  flex-shrink: 0;
  padding-right: 28px;
  border-right: 1px solid var(--ink-200);
  font-family: var(--font-mono);
}
.marquee {
  flex: 1;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent 0, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 8%, #000 92%, transparent 100%);
  position: relative;
}
.marquee-track {
  display: flex;
  gap: 40px;
  width: max-content;
  animation: marquee 38s linear infinite;
  align-items: center;
}
.marquee:hover .marquee-track { animation-play-state: paused }
@keyframes marquee {
  from { transform: translateX(0) }
  to   { transform: translateX(-50%) }
}
.client-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--ink-700);
  padding: 8px 18px;
  border-radius: var(--r-full);
  background: var(--ink-50);
  border: 1px solid var(--ink-200);
  white-space: nowrap;
  transition: all .25s var(--ease-standard);
  position: relative;
}
.client-chip::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ink-300);
  transition: background .25s;
}
.client-chip:hover {
  background: var(--azure-50);
  border-color: var(--azure-200);
  color: var(--brand-blue);
  transform: translateY(-1px);
}
.client-chip:hover::before { background: var(--brand-blue) }

/* ── 9. 服务卡片 ── */
.services-wrap { background: var(--ink-50); position: relative; overflow: hidden }
.services-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--dotgrid);
  background-size: 24px 24px;
  opacity: .8;
  pointer-events: none;
}
.services-wrap .container { position: relative; z-index: 1 }
.services-g, .services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scard, .service-card {
  background: #fff;
  border-radius: var(--r-lg);
  padding: 32px 28px;
  border: 1px solid var(--ink-200);
  position: relative;
  overflow: hidden;
  transition: all .3s var(--ease-out-expo);
  isolation: isolate;
}
.scard::before, .service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    420px circle at var(--mx, 50%) var(--my, 0%),
    rgba(47,107,232,.08),
    transparent 55%
  );
  opacity: 0;
  transition: opacity .35s;
  z-index: -1;
}
.scard::after, .service-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-brand);
  opacity: 0;
  transition: opacity .25s;
}
.scard:hover, .service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}
.scard:hover::before, .service-card:hover::before { opacity: 1 }
.scard:hover::after, .service-card:hover::after { opacity: 1 }

.scard.featured {
  background: linear-gradient(160deg, var(--azure-50) 0%, #fff 50%);
  border-color: var(--azure-200);
}
.scard.featured::after { opacity: 1 }

.sicon, .service-icon {
  width: 52px; height: 52px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 22px;
  background: var(--azure-50);
  border: 1px solid var(--azure-200);
  position: relative;
}
.scard:hover .sicon, .service-card:hover .service-icon {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  filter: brightness(1.05);
  transform: rotate(-6deg) scale(1.06);
  transition: all .35s var(--ease-spring);
}
.sname, .service-name {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 10px;
  letter-spacing: -.015em;
}
.sdesc, .service-desc {
  font-size: .88rem;
  color: var(--ink-500);
  line-height: 1.75;
}
.stags, .service-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 18px;
}
.stag, .service-tag {
  font-size: .7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--r-full);
  background: var(--ink-50);
  color: var(--ink-500);
  border: 1px solid var(--ink-200);
}
.slink {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 18px;
  font-size: .86rem;
  font-weight: 700;
  color: var(--brand-blue);
}
.slink::after { content: '→'; transition: transform .2s }
.scard:hover .slink::after { transform: translateX(4px) }

/* ── 10. 深色优势区 ── */
.advantages, .adv-wrap {
  background: linear-gradient(135deg, #0a1628 0%, #0d1f3c 45%, #142b54 100%);
  position: relative;
  overflow: hidden;
}
.advantages::before, .adv-wrap::before {
  content: '';
  position: absolute;
  top: -30%; right: -10%;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47,107,232,.16) 0%, transparent 65%);
  pointer-events: none;
}
.advantages::after, .adv-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--dotgrid-dark);
  background-size: 32px 32px;
  pointer-events: none;
}
.advantages .container, .adv-wrap .container { position: relative; z-index: 1 }
.advantages .section-title, .adv-wrap .section-title { color: #fff }
.advantages .section-sub, .adv-wrap .section-sub { color: rgba(255,255,255,.6) }
.adv-grid, .adv-g {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.adv-card, .adv-c {
  background: rgba(255,255,255,.035);
  border-radius: var(--r-lg);
  padding: 32px 26px;
  border: 1px solid rgba(255,255,255,.08);
  transition: all .3s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.adv-card::before, .adv-c::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(47,107,232,.12), transparent 60%);
  opacity: 0;
  transition: opacity .3s;
  z-index: -1;
}
.adv-card:hover, .adv-c:hover {
  background: rgba(255,255,255,.06);
  border-color: rgba(47,107,232,.4);
  transform: translateY(-4px);
}
.adv-card:hover::before, .adv-c:hover::before { opacity: 1 }
.adv-num, .adv-n {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255,255,255,.09);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -.04em;
  font-family: var(--font-mono);
}
.adv-card:hover .adv-num, .adv-c:hover .adv-n {
  color: var(--brand-blue);
  opacity: .5;
  transition: color .35s, opacity .35s;
}
.adv-title, .adv-t {
  font-size: 1.02rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -.01em;
}
.adv-desc, .adv-d {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  line-height: 1.75;
}

/* ── 11. 制作流程（带连接器） ── */
.process, .proc-wrap { background: #fff; position: relative; overflow: hidden }
.process::before, .proc-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--dotgrid);
  background-size: 28px 28px;
  opacity: .5;
  pointer-events: none;
}
.process .container, .proc-wrap .container { position: relative; z-index: 1 }
.process-steps, .proc-g {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.process-steps::before, .proc-g::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(10% + 14px);
  right: calc(10% + 14px);
  height: 2px;
  background:
    repeating-linear-gradient(90deg,
      var(--azure-300) 0 6px,
      transparent 6px 12px);
  z-index: 0;
}
.step, .pstep {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 10px;
  position: relative;
  z-index: 1;
}
.step-num, .pnum {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--azure-200);
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem;
  font-weight: 800;
  color: var(--brand-blue);
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm), 0 0 0 6px #fff;
  transition: all .25s var(--ease-spring);
  font-family: var(--font-mono);
}
.step:hover .step-num, .pstep:hover .pnum {
  background: var(--brand-blue);
  color: #fff;
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-acc), 0 0 0 6px #fff;
  transform: scale(1.08);
}
.step-title, .ptitle {
  font-size: .92rem;
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 6px;
}
.step-desc, .pdesc {
  font-size: .78rem;
  color: var(--ink-500);
  line-height: 1.6;
}

/* ── 12. 知识库文章卡片（首页用） ── */
.knowledge, .kb-wrap { background: var(--ink-50); position: relative }
.articles-grid, .kb-g {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.article-card, .kcard {
  border-radius: var(--r-lg);
  border: 1px solid var(--ink-200);
  overflow: hidden;
  transition: all .3s var(--ease-out-expo);
  display: flex;
  flex-direction: column;
  background: #fff;
}
.article-card:hover, .kcard:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: transparent;
}
.article-accent, .kacc {
  height: 4px;
  background: var(--grad-brand);
}
.article-meta, .kmeta { padding: 26px 26px 18px }
.article-cat, .kcat {
  font-size: .7rem;
  font-weight: 700;
  color: var(--brand-blue);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-cat::before, .kcat::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.article-title, .ktitle {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1.5;
  margin-bottom: 12px;
  letter-spacing: -.01em;
}
.article-excerpt, .kexc {
  font-size: .85rem;
  color: var(--ink-500);
  line-height: 1.75;
}
.article-footer, .kfoot {
  padding: 14px 26px 22px;
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--ink-100);
}
.article-read, .kread {
  font-size: .82rem;
  font-weight: 700;
  color: var(--brand-blue);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s;
}
.article-card:hover .article-read,
.kcard:hover .kread { gap: 8px }
.article-read::after, .kread::after { content: '→' }

.kfoot .read-time {
  font-size: .76rem;
  color: var(--ink-400);
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

/* ── 13. CTA Section ── */
.cta-section, .cta-wrap {
  background: linear-gradient(135deg, #0a1628 0%, #142b54 40%, #1e3fb5 100%);
  padding: 96px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before, .cta-wrap::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,.15) 0%, transparent 65%);
  pointer-events: none;
}
.cta-section::after, .cta-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--dotgrid-dark);
  background-size: 32px 32px;
  pointer-events: none;
}
.cta-section .container, .cta-wrap .container { position: relative; z-index: 1 }
.cta-section h2, .cta-wrap h2 {
  font-size: clamp(1.85rem, 3vw, 2.4rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -.025em;
  line-height: 1.2;
}
.cta-section p, .cta-wrap p {
  font-size: 1.05rem;
  color: rgba(255,255,255,.65);
  margin: 0 auto 36px;
  max-width: 480px;
  line-height: 1.75;
}
.cta-section .btn-primary, .cta-wrap .btn-primary {
  background: #fff;
  color: var(--brand-blue);
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
}
.cta-section .btn-primary:hover, .cta-wrap .btn-primary:hover {
  background: var(--azure-50);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(0,0,0,.3);
}
.cta-section .btn-outline, .cta-wrap .btn-outline {
  border-color: rgba(255,255,255,.32);
  color: #fff;
}
.cta-section .btn-outline:hover, .cta-wrap .btn-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,.08);
  color: #fff;
}
.cta-note {
  margin-top: 22px;
  font-size: .82rem;
  color: rgba(255,255,255,.42);
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

/* ── 14. 页脚（增强对齐与精致度） ── */
.footer {
  background: #050912;
  color: rgba(255,255,255,.55);
  padding: 72px 0 32px;
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47,107,232,.4), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.footer-brand .brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
  letter-spacing: -.01em;
}
.footer-brand .brand-tag {
  font-size: .64rem;
  color: rgba(255,255,255,.55);
  margin-bottom: 18px;
  letter-spacing: .18em;
  font-family: var(--font-mono);
  font-weight: 600;
}
.footer-brand p {
  font-size: .85rem;
  line-height: 1.85;
  max-width: 280px;
  color: rgba(255,255,255,.5);
}
.footer-col h4 {
  font-size: .72rem;
  font-weight: 700;
  color: rgba(255,255,255,.72);
  margin-bottom: 18px;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.footer-col ul { display: flex; flex-direction: column; gap: 11px }
.footer-col a {
  font-size: .86rem;
  color: rgba(255,255,255,.48);
  transition: color .18s, padding .18s;
}
.footer-col a:hover { color: #fff; padding-left: 4px }
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .76rem;
  flex-wrap: wrap;
  gap: 8px;
  color: rgba(255,255,255,.32);
  font-family: var(--font-mono);
  letter-spacing: .04em;
}
.footer-bottom a { color: rgba(255,255,255,.32); transition: color .18s }
.footer-bottom a:hover { color: #fff }

/* ── 15. 入场动画 ── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s var(--ease-out-expo), transform .6s var(--ease-out-expo);
}
.fade-up.visible { opacity: 1; transform: translateY(0) }
.fade-in {
  opacity: 0;
  transition: opacity .6s var(--ease-standard);
}
.fade-in.visible { opacity: 1 }

/* ── 16. 通用模糊光晕 / 装饰 ── */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(40px);
  opacity: .6;
}
.glow-orb.brand { background: radial-gradient(circle, rgba(47,107,232,.4), transparent 70%) }
.glow-orb.indigo { background: radial-gradient(circle, rgba(99,102,241,.4), transparent 70%) }
.glow-orb.amber { background: radial-gradient(circle, rgba(217,119,6,.3), transparent 70%) }

/* 数字 + 后缀的对齐 */
.metric-val sup, .stat-val sup, .num sup, .cstat-val sup {
  font-size: .5em;
  vertical-align: super;
  font-weight: 700;
  color: var(--brand-blue);
  margin-left: 1px;
}

/* aspect ratio frame — 装饰用 */
.aspect-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .65rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--ink-400);
  text-transform: uppercase;
}
.aspect-tag::before {
  content: '';
  width: 12px; height: 8px;
  border: 1.5px solid currentColor;
  border-radius: 1px;
}

/* ── 17. 响应式 ── */
@media (max-width: 1024px) {
  .services-grid, .services-g { grid-template-columns: repeat(2, 1fr) }
  .adv-grid, .adv-g           { grid-template-columns: repeat(2, 1fr) }
  .process-steps, .proc-g     { grid-template-columns: repeat(3, 1fr); gap: 30px }
  .process-steps::before, .proc-g::before { display: none }
  .articles-grid, .kb-g       { grid-template-columns: repeat(2, 1fr) }
  .footer-grid                { grid-template-columns: 1fr 1fr; gap: 36px }
}
@media (max-width: 768px) {
  .section-pad      { padding: 64px 0 }
  .section-pad-lg   { padding: 80px 0 }
  .section-title    { font-size: 1.65rem }
  .container        { padding: 0 22px }
  .nav-links {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(18px);
    flex-direction: column;
    padding: 18px 22px;
    border-bottom: 1px solid var(--ink-200);
    box-shadow: var(--shadow-lg);
    gap: 4px;
    align-items: stretch;
  }
  .nav-links.open { display: flex }
  .nav-links a:not(.nav-cta) { padding: 12px 14px }
  .nav-cta { margin-left: 0 !important; margin-top: 8px; justify-content: center }
  .nav-toggle { display: flex }
  .services-grid, .services-g { grid-template-columns: 1fr }
  .adv-grid, .adv-g           { grid-template-columns: 1fr 1fr }
  .process-steps, .proc-g     { grid-template-columns: 1fr 1fr; gap: 24px }
  .articles-grid, .kb-g       { grid-template-columns: 1fr }
  .footer-grid                { grid-template-columns: 1fr; gap: 28px }
  .clients-bar .container     { gap: 16px }
  .clients-eyebrow            { display: none }
  .cta-section h2, .cta-wrap h2 { font-size: 1.8rem }
}
@media (max-width: 480px) {
  .adv-grid, .adv-g    { grid-template-columns: 1fr }
  .container           { padding: 0 18px }
  .btn                 { padding: 12px 22px }
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}