/* ============================================================
   云慧文化科技 — Apple 风格设计系统
   ============================================================ */
:root {
  --bg-dark: #000;
  --bg-light: #f5f5f7;
  --bg-white: #fff;
  --text-dark: #1d1d1f;
  --text-light: #f5f5f7;
  --text-gray: #86868b;
  --text-gray-dark: #6e6e73;
  --accent: #0071e3;
  --grad-brand: linear-gradient(92deg, #ff9f5a 0%, #ff5e7d 38%, #b06cff 72%, #5a8bff 100%);
  --grad-warm: linear-gradient(135deg, #ff9f5a, #ff5e7d);
  --grad-cool: linear-gradient(135deg, #5a8bff, #b06cff);
  --radius-card: 28px;
  --nav-h: 84px;
  --content-w: 980px;
  --content-wide: 1200px;
  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro SC",
    "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(176, 108, 255, .3); }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* 锚点定位补偿固定导航高度 */
[id] { scroll-margin-top: calc(var(--nav-h) + 24px); }

/* ---------- 排版 ---------- */
.h1, .h2 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
}
.h1 { font-size: clamp(44px, 8vw, 88px); }
.h2 { font-size: clamp(34px, 5.4vw, 60px); }
.h3 { font-size: clamp(24px, 3vw, 34px); font-weight: 600; letter-spacing: -0.015em; }

.eyebrow {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-gray);
  margin-bottom: 18px;
}

.lead {
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.45;
  font-weight: 500;
}

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

.container {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 22px;
}
.container-wide {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 22px;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: calc(var(--nav-h) + env(safe-area-inset-top));
  padding-top: env(safe-area-inset-top);
  z-index: 1000;
  background: rgba(0, 0, 0, .72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  transition: background .4s var(--ease-out);
}
.nav-inner {
  max-width: 1024px;
  height: 100%;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 60px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: var(--nav-h);
}
.nav-logo .logo-brand {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 14px rgba(255, 94, 125, .28));
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  font-size: 13px;
  color: rgba(255,255,255,.82);
  transition: color .25s;
  cursor: pointer;
}
.nav-links a:hover { color: #fff; }
.nav-cta {
  font-size: 13px;
  color: #fff !important;
  background: var(--accent);
  padding: 5px 14px;
  border-radius: 999px;
  transition: background .25s;
}
.nav-cta:hover { background: #0077ed; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 18px; height: 1.5px;
  background: #fff;
  transition: transform .3s, opacity .3s;
}
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg-dark);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 60px) 0 80px;
}
.hero-glow {
  position: absolute;
  width: 900px; height: 900px;
  border-radius: 50%;
  filter: blur(140px);
  opacity: .22;
  pointer-events: none;
}
.hero-glow.g1 { background: #ff5e7d; top: -35%; left: -12%; }
.hero-glow.g2 { background: #5a8bff; bottom: -40%; right: -12%; }
.hero-glow.g3 { background: #b06cff; top: 25%; left: 45%; opacity: .16; }
.hero-inner { position: relative; z-index: 2; max-width: 900px; padding: 0 22px; }
.hero .eyebrow { color: rgba(255,255,255,.55); }
.hero h1 {
  margin-bottom: 26px;
  /* 缩小字号，首行「把想法，变成拿得出手的」可整行放下，整体两行排列 */
  font-size: clamp(30px, 9vw, 68px);
}
@media (max-width: 680px) {
  .hero h1 { font-size: clamp(30px, 8.6vw, 44px); }
}
.hl-line { display: inline-block; }
.hero .lead { color: rgba(255,255,255,.72); max-width: 640px; margin: 0 auto 40px; }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 44px;
}
.hero-tags li {
  font-size: 14px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.22);
  color: rgba(255,255,255,.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  background: rgba(255,255,255,.06);
  transition: border-color .3s, transform .3s;
}
.hero-tags li:hover { border-color: rgba(255,255,255,.5); transform: translateY(-2px); }

.btn {
  display: inline-block;
  font-size: 17px;
  font-weight: 500;
  padding: 14px 32px;
  border-radius: 999px;
  transition: transform .3s var(--ease-out), background .3s, color .3s;
  cursor: pointer;
  border: 0;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #0077ed; }
.btn-ghost {
  background: transparent;
  color: #2997ff;
  padding: 14px 12px;
}
.btn-ghost:hover { text-decoration: underline; }
.btn-dark { background: var(--text-dark); color: #fff; }
.btn-dark:hover { background: #333; }

.hero-actions { display: flex; gap: 18px; justify-content: center; align-items: center; flex-wrap: wrap; }

.hero-scroll {
  position: absolute;
  bottom: 34px; left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 40px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 14px;
  z-index: 2;
}
.hero-scroll::after {
  content: "";
  position: absolute;
  top: 7px; left: 50%;
  width: 3px; height: 8px;
  margin-left: -1.5px;
  border-radius: 3px;
  background: rgba(255,255,255,.6);
  animation: scrollHint 1.8s infinite;
}
@keyframes scrollHint {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 0; }
}

/* ---------- 通用 Section ---------- */
.section { padding: clamp(80px, 12vw, 140px) 0; }
.section-dark { background: var(--bg-dark); color: var(--text-light); }
.section-gray { background: var(--bg-light); }
.section-head { max-width: 760px; margin: 0 auto clamp(48px, 7vw, 80px); text-align: center; }
.section-head .lead { color: var(--text-gray); margin-top: 20px; }
.section-dark .section-head .lead { color: rgba(255,255,255,.6); }

/* ---------- 业务卡片 ---------- */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.biz-card {
  position: relative;
  border-radius: var(--radius-card);
  padding: 48px 42px 44px;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  transition: transform .5s var(--ease-out), box-shadow .5s;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: 0 30px 60px rgba(0,0,0,.18); }
.biz-card h3 { margin-bottom: 12px; }
.biz-card .biz-desc { font-size: 16px; line-height: 1.6; margin-bottom: 26px; max-width: 40ch; }
.biz-visual { margin-top: auto; }

.biz-card.c-light { background: var(--bg-light); color: var(--text-dark); }
.biz-card.c-light .biz-desc { color: var(--text-gray-dark); }
.biz-card.c-dark { background: #101013; color: var(--text-light); }
.biz-card.c-dark .biz-desc { color: rgba(255,255,255,.6); }
.biz-card .eyebrow { margin-bottom: 10px; }
.biz-card.c-dark .eyebrow { color: rgba(255,255,255,.45); }

.biz-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
  margin-top: 18px;
}
.biz-link:hover { text-decoration: underline; }
.biz-card.c-dark .biz-link { color: #2997ff; }

/* 卡片内视觉：CSS 构建的抽象产品图 */
.visual-stage {
  height: 190px;
  border-radius: 18px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.vs-warm { background: linear-gradient(135deg, #ffe3d0, #ffd3e0); }
.vs-cool { background: linear-gradient(135deg, #d8e6ff, #ecdcff); }
.vs-night { background: linear-gradient(135deg, #1c1c22, #2a2338); }
.vs-sage { background: linear-gradient(135deg, #ddf3e4, #d0e8f5); }

.vs-object {
  width: 96px; height: 96px;
  border-radius: 24px;
  box-shadow: 0 22px 40px rgba(0,0,0,.22);
  transform: rotate(-8deg);
  transition: transform .6s var(--ease-out);
}
.biz-card:hover .vs-object { transform: rotate(0deg) translateY(-6px); }
.o-1 { background: linear-gradient(145deg, #ff9f5a, #ff5e7d); }
.o-2 { background: linear-gradient(145deg, #5a8bff, #b06cff); border-radius: 50%; }
.o-3 { background: linear-gradient(145deg, #f5f5f7, #c8c8d0); border-radius: 12px; }
.o-4 { background: linear-gradient(145deg, #48c78e, #2f9e6e); }

/* ---------- 六步流程 ---------- */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: step;
}
.flow-item {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 22px;
  padding: 34px 28px 30px;
  transition: border-color .4s, transform .4s var(--ease-out), background .4s;
}
.flow-item:hover {
  border-color: rgba(255,255,255,.32);
  transform: translateY(-4px);
  background: rgba(255,255,255,.08);
}
.flow-num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: transparent;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  margin-bottom: 14px;
}
.flow-item h3 { font-size: 21px; font-weight: 600; margin-bottom: 10px; }
.flow-item p { font-size: 15px; color: rgba(255,255,255,.58); line-height: 1.6; }
.flow-arrow {
  text-align: center;
  font-size: 26px;
  color: rgba(255,255,255,.28);
  margin: 14px 0 22px;
}

/* ---------- 对比图示 ---------- */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 28px;
  align-items: stretch;
}
.compare-col {
  border-radius: var(--radius-card);
  padding: 42px 38px;
}
.compare-col.bad { background: #fff; border: 1px solid #e3e3e6; }
.compare-col.good { background: var(--text-dark); color: #fff; }
.compare-col h3 { font-size: 24px; margin-bottom: 8px; }
.compare-col .compare-tag { font-size: 14px; margin-bottom: 26px; }
.compare-col.bad .compare-tag { color: var(--text-gray); }
.compare-col.good .compare-tag { color: rgba(255,255,255,.55); }
.compare-col li {
  position: relative;
  padding-left: 30px;
  font-size: 16px;
  margin-bottom: 16px;
  line-height: 1.6;
}
.compare-col li::before {
  position: absolute; left: 0; top: 0;
  font-weight: 700;
}
.compare-col.bad li::before { content: "×"; color: #c94f4f; }
.compare-col.good li::before { content: "✓"; color: #4fc78e; }
.compare-vs {
  align-self: center;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-gray);
  letter-spacing: .1em;
}

/* ---------- 服务边界 ---------- */
.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.boundary-box { border-radius: var(--radius-card); padding: 40px 38px; }
.boundary-box.yes { background: rgba(79, 199, 142, .1); border: 1px solid rgba(79,199,142,.35); }
.boundary-box.no { background: rgba(201, 79, 79, .07); border: 1px solid rgba(201,79,79,.28); }
.boundary-box h3 { font-size: 22px; margin-bottom: 20px; }
.boundary-box li { position: relative; padding-left: 26px; font-size: 16px; margin-bottom: 13px; }
.boundary-box.yes li::before { content: "✓"; position: absolute; left: 0; color: #2f9e6e; font-weight: 700; }
.boundary-box.no li::before { content: "–"; position: absolute; left: 2px; color: #c94f4f; font-weight: 700; }
.boundary-note { margin-top: 34px; font-size: 15px; color: var(--text-gray-dark); text-align: center; }

/* ---------- 案例 ---------- */
.case-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
  border: 1px solid #e8e8ed;
  transition: transform .5s var(--ease-out), box-shadow .5s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: 0 30px 60px rgba(0,0,0,.12); }
.case-visual { height: 260px; position: relative; overflow: hidden; }
.case-body { padding: 34px 36px 36px; }
.case-body .case-meta { font-size: 13px; font-weight: 600; letter-spacing: .06em; color: var(--text-gray); margin-bottom: 10px; }
.case-body h3 { font-size: 23px; margin-bottom: 12px; }
.case-body p { font-size: 15.5px; color: var(--text-gray-dark); line-height: 1.6; }
.case-steps { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.case-steps span {
  font-size: 12.5px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--bg-light);
  color: var(--text-gray-dark);
  font-weight: 500;
}
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.case-art { width: 100%; height: 100%; }
.case-art rect, .case-art circle, .case-art path { transition: transform .8s var(--ease-out); }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid #e3e3e6;
}
.faq-item button {
  width: 100%;
  background: none;
  border: 0;
  text-align: left;
  padding: 26px 4px;
  font-size: 19px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-family: inherit;
  letter-spacing: -0.01em;
}
.faq-item button::after {
  content: "+";
  font-size: 26px;
  font-weight: 400;
  color: var(--text-gray);
  transition: transform .35s var(--ease-out);
  flex-shrink: 0;
}
.faq-item.open button::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s var(--ease-out);
}
.faq-answer p {
  padding: 0 4px 28px;
  font-size: 16px;
  color: var(--text-gray-dark);
  line-height: 1.7;
  max-width: 64ch;
}

/* ---------- CTA ---------- */
.cta-band {
  text-align: center;
  padding: clamp(90px, 13vw, 160px) 22px;
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-band h2 { margin-bottom: 18px; }
.cta-band p { color: rgba(255,255,255,.6); font-size: 19px; margin-bottom: 40px; }
.cta-glow {
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: #b06cff;
  filter: blur(160px);
  opacity: .18;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--bg-dark);
  color: var(--text-gray);
  padding: 46px 0 60px;
  font-size: 13px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 30px;
  border-bottom: 1px solid #2a2a2e;
}
.footer-col h4 { color: #d2d2d7; font-size: 13px; font-weight: 600; margin-bottom: 14px; }
.footer-col li { margin-bottom: 9px; }
.footer-col a { color: var(--text-gray); transition: color .25s; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: #6e6e73;
}

/* ---------- 服务页六步详解 ---------- */
.step-section {
  padding: clamp(70px, 10vw, 120px) 0;
  border-bottom: 1px solid #e8e8ed;
}
.step-section:last-of-type { border-bottom: 0; }
.step-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  align-items: start;
}
.step-label {
  position: sticky;
  top: calc(var(--nav-h) + 30px);
}
.step-label .step-index {
  font-size: clamp(56px, 7vw, 84px);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.step-label h2 { font-size: 26px; margin-top: 14px; letter-spacing: -.015em; }
.step-content .lead { color: var(--text-dark); margin-bottom: 26px; }
.step-content p { font-size: 16.5px; color: var(--text-gray-dark); line-height: 1.75; margin-bottom: 18px; max-width: 66ch; }
.step-list { margin: 22px 0 6px; }
.step-list li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  margin-bottom: 12px;
  color: var(--text-dark);
}
.step-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--grad-warm);
}
.step-out {
  margin-top: 26px;
  background: var(--bg-light);
  border-radius: 16px;
  padding: 20px 24px;
  font-size: 15px;
}
.step-out strong { display: block; margin-bottom: 6px; font-size: 14px; letter-spacing: .04em; color: var(--text-gray-dark); }

/* ---------- 页面 Hero（内页） ---------- */
.page-hero {
  padding: calc(var(--nav-h) + clamp(70px, 10vw, 110px)) 0 clamp(50px, 7vw, 80px);
  background: var(--bg-dark);
  color: var(--text-light);
  text-align: center;
}
.page-hero .lead { color: rgba(255,255,255,.62); max-width: 620px; margin: 24px auto 0; }
.page-hero .h1 { font-size: clamp(40px, 6.5vw, 72px); }

/* ---------- 滚动进场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-scale { transform: scale(.96); }
.reveal-scale.visible { transform: scale(1); }

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

/* ---------- 响应式 ---------- */
@media (max-width: 1120px) {
  .nav-logo { font-size: 30px; }
  .nav-links { gap: 22px; }
}
@media (max-width: 960px) {
  .biz-grid { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr 1fr; }
  .case-grid { grid-template-columns: 1fr 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .compare-vs { text-align: center; }
  .step-layout { grid-template-columns: 1fr; gap: 30px; }
  .step-label { position: static; display: flex; align-items: baseline; gap: 16px; }
  .step-label .step-index { font-size: 52px; }
  .step-label h2 { margin-top: 0; }
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 12.5px; }
}
@media (max-width: 680px) {
  .nav-links {
    position: fixed;
    top: calc(var(--nav-h) + env(safe-area-inset-top));
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    background: rgba(0,0,0,.92);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    padding: 18px 22px 26px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s, transform .3s;
  }
  .nav.open .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { font-size: 19px; padding: 8px 0; }
  .nav-toggle { display: flex; }
  .flow-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .boundary-grid { grid-template-columns: 1fr; }
  .hero { min-height: 84vh; }
  .hero-actions .btn-ghost { padding-left: 0; }
  .faq-item button { font-size: 17px; }
}

/* ---------- 小屏自适应加固 ---------- */
@media (max-width: 680px) {
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 40px; }
  .hero { min-height: 100svh; padding-top: calc(var(--nav-h) + env(safe-area-inset-top) + 40px); }
  .hero-tags li { font-size: 13px; padding: 7px 14px; }
  .hero-actions { flex-direction: column; gap: 10px; }
  .hero-actions .btn { width: 100%; max-width: 320px; text-align: center; }
  .biz-card { min-height: 0; padding: 34px 26px 30px; }
  .visual-stage { height: 150px; }
  .flow-item { padding: 28px 24px 26px; }
  .compare-col { padding: 32px 26px; }
  .faq-item button { padding: 20px 2px; font-size: 16.5px; }
  .step-out { padding: 16px 18px; }
  .case-body { padding: 26px 24px 28px; }
  .cta-band { padding: 72px 20px 88px; }
  .cta-band p { font-size: 16.5px; }
  .btn { font-size: 16px; padding: 13px 28px; }
}
@media (max-width: 380px) {
  .hero h1 { font-size: 27px; }
  .h2 { font-size: 29px; }
}
/* 平板中缝优化 */
@media (min-width: 681px) and (max-width: 960px) {
  .biz-grid { gap: 18px; }
  .biz-card { min-height: 0; padding: 38px 32px 36px; }
}

@media (max-width: 680px) {
  :root { --nav-h: 56px; }
  .nav-logo { font-size: 26px; }
}

/* ============================================================
   博客模块
   ============================================================ */

/* ---------- 首页博客区 ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.blog-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--bg-white);
  border: 1px solid #e8e8ed;
  transition: transform .5s var(--ease-out), box-shadow .5s;
}
.blog-card:hover { transform: translateY(-6px); box-shadow: 0 30px 60px rgba(0,0,0,.12); }
.blog-cover { height: 200px; position: relative; overflow: hidden; display: block; }
.blog-cover svg { width: 100%; height: 100%; }
.blog-cover::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,.28));
}
.blog-body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.blog-meta { font-size: 13px; color: var(--text-gray); display: flex; gap: 12px; align-items: center; margin-bottom: 12px; }
.blog-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: #c7c7cc; }
.blog-card h3 { font-size: 20px; line-height: 1.35; font-weight: 600; margin-bottom: 10px; letter-spacing: -.01em; }
.blog-card h3 a:hover { color: var(--accent); }
.blog-excerpt {
  font-size: 15px;
  color: var(--text-gray-dark);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-more {
  margin-top: auto;
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.blog-more:hover { text-decoration: underline; }
.blog-section-foot { text-align: center; margin-top: 44px; }

/* 分类标签 */
.blog-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--bg-light);
  color: var(--text-gray-dark);
}
.blog-tag.tag-compare { background: rgba(90,139,255,.12); color: #3f6fd8; }
.blog-tag.tag-insight { background: rgba(255,94,125,.12); color: #d8446b; }
.blog-tag.tag-guide { background: rgba(176,108,255,.13); color: #8a4ddb; }
.blog-tag.tag-ops { background: rgba(72,199,142,.14); color: #2f8f66; }

/* ---------- 列表页 ---------- */
.blog-list-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.blog-count { font-size: 15px; color: var(--text-gray); }
.blog-list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.blog-list-grid .blog-card h3 { font-size: 19px; }
.blog-empty { text-align: center; padding: 80px 0; color: var(--text-gray); }

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 56px;
  flex-wrap: wrap;
}
.pagination button {
  font-family: inherit;
  font-size: 15px;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid #e3e3e6;
  background: var(--bg-white);
  color: var(--text-dark);
  cursor: pointer;
  transition: background .25s, border-color .25s, color .25s, transform .25s;
}
.pagination button:hover:not(:disabled) { border-color: var(--text-dark); transform: translateY(-1px); }
.pagination button[aria-current="page"] { background: var(--text-dark); border-color: var(--text-dark); color: #fff; }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }
.pagination .page-info { font-size: 14px; color: var(--text-gray); margin: 0 6px; }

/* ---------- 文章页 ---------- */
.article-hero {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: calc(var(--nav-h) + env(safe-area-inset-top) + 44px) 0 0;
  text-align: center;
}
.article-hero-inner { max-width: 780px; margin: 0 auto; padding: 0 22px 44px; }
.article-hero h1 {
  font-size: clamp(30px, 4.4vw, 50px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.02em;
  margin: 18px 0 22px;
}
.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(255,255,255,.6);
}
.article-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: rgba(255,255,255,.4); }
.article-cover-band { height: clamp(200px, 32vw, 340px); overflow: hidden; }
.article-cover-band svg { width: 100%; height: 100%; }

.breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,.5);
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 8px;
}
.breadcrumb a:hover { color: #fff; text-decoration: underline; }

.article-body { max-width: 720px; margin: 0 auto; padding: clamp(48px, 7vw, 80px) 22px 0; }
.article-body > p { font-size: 17.5px; line-height: 1.85; color: var(--text-dark); margin-bottom: 24px; }
.article-body h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: -.015em;
  margin: 54px 0 20px;
  line-height: 1.25;
}
.article-body h3 { font-size: 20px; font-weight: 600; margin: 36px 0 14px; }
.article-body ul, .article-body ol { margin: 0 0 24px; }
.article-body li {
  position: relative;
  padding-left: 26px;
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 12px;
  color: var(--text-dark);
}
.article-body ul li::before {
  content: "";
  position: absolute; left: 4px; top: 13px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--grad-warm);
}
.article-body ol { counter-reset: ol; }
.article-body ol li::before {
  content: counter(ol);
  counter-increment: ol;
  position: absolute; left: 0; top: 0;
  font-weight: 700;
  color: #b06cff;
  font-size: 16px;
}
.article-body strong { font-weight: 600; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-lead {
  font-size: 20px !important;
  line-height: 1.6 !important;
  color: var(--text-dark) !important;
  font-weight: 500;
  padding-left: 20px;
  border-left: 3px solid;
  border-image: var(--grad-brand) 1;
}
.article-figure { margin: 36px 0 40px; }
.article-figure .fig-box {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid #e8e8ed;
  background: var(--bg-light);
}
.article-figure svg { width: 100%; height: auto; display: block; }
.article-figure figcaption {
  font-size: 13.5px;
  color: var(--text-gray);
  text-align: center;
  margin-top: 12px;
}
.article-quote {
  margin: 36px 0;
  padding: 24px 30px;
  background: var(--bg-light);
  border-radius: 18px;
  font-size: 18px;
  line-height: 1.75;
  color: var(--text-dark);
  font-weight: 500;
}
.article-table { width: 100%; border-collapse: collapse; table-layout: fixed; margin: 30px 0 36px; font-size: 15.5px; }
.article-table th, .article-table td { text-align: left; padding: 15px 18px; border-bottom: 1px solid #e8e8ed; vertical-align: top; line-height: 1.7; word-break: break-word; }
.article-table tbody tr { transition: background-color .15s ease; }
.article-table tbody tr:hover { background: var(--bg-light); }
.article-table th { font-weight: 600; background: var(--bg-light); font-size: 14.5px; border-bottom: 2px solid #e0e0e6; }
.article-table td { font-weight: 400; }
.article-table td:first-child { font-weight: 600; }

.article-cta {
  margin: 56px auto 0;
  max-width: 720px;
  background: var(--text-dark);
  color: #fff;
  border-radius: var(--radius-card);
  padding: 40px 36px;
  text-align: center;
}
.article-cta h3 { font-size: 24px; margin-bottom: 12px; }
.article-cta p { color: rgba(255,255,255,.62); font-size: 16px; margin-bottom: 26px; }

.article-related { max-width: 720px; margin: 0 auto; padding: 64px 22px 0; }
.article-related h2 { font-size: 22px; margin-bottom: 22px; }
.article-related ul li { border-top: 1px solid #e8e8ed; }
.article-related ul li:last-child { border-bottom: 1px solid #e8e8ed; }
.article-related a {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 20px 2px;
  font-size: 17px;
  font-weight: 500;
  transition: color .25s, padding .3s;
}
.article-related a:hover { color: var(--accent); padding-left: 8px; }
.article-related .rel-meta { font-size: 13.5px; color: var(--text-gray); font-weight: 400; flex-shrink: 0; }
.article-back { display: block; text-align: center; margin: 56px 0 100px; }

@media (max-width: 960px) {
  .blog-grid, .blog-list-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .blog-grid, .blog-list-grid { grid-template-columns: 1fr; }
  .blog-cover { height: 180px; }
  .article-body > p, .article-body li { font-size: 16.5px; }
  .article-body h2 { margin-top: 44px; }
  .article-quote { padding: 22px 22px; font-size: 17px; }
  .article-table { font-size: 14px; display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; min-width: 540px; max-width: 100%; }
  .article-table th, .article-table td { padding: 12px 14px; line-height: 1.6; }
  .article-table tbody tr:hover { background: transparent; }
  .article-cta { margin-top: 44px; padding: 32px 24px; }
  .article-related a { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* ============================================================
   GEO 可引用区块（定义摘要 / 要点速览 / 相关服务 / 实体信息）
   ============================================================ */
.geo-summary {
  max-width: 820px;
  margin: 0 auto;
  background: var(--bg-light);
  border-radius: 20px;
  padding: 28px 32px 30px;
  border-left: 3px solid;
  border-image: var(--grad-brand) 1;
}
.geo-summary h2 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--text-gray);
  margin-bottom: 12px;
}
.geo-summary p { font-size: 17px; line-height: 1.75; color: var(--text-dark); }

.key-points {
  margin: 36px 0 10px;
  background: var(--bg-light);
  border-radius: 18px;
  padding: 26px 30px 22px;
}
.key-points h2 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--text-gray);
  margin: 0 0 16px;
}
.key-points li {
  position: relative;
  padding-left: 24px;
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--text-dark);
  margin-bottom: 11px;
}
.key-points li::before {
  content: "";
  position: absolute; left: 3px; top: 11px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--grad-warm);
}

.related-services {
  max-width: 720px;
  margin: 52px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.related-services a {
  display: block;
  border: 1px solid #e3e3e6;
  border-radius: 16px;
  padding: 18px 22px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--text-dark);
  transition: border-color .3s, transform .3s;
}
.related-services a:hover { border-color: var(--text-dark); transform: translateY(-2px); }
.related-services span { display: block; font-size: 13px; font-weight: 400; color: var(--text-gray); margin-top: 5px; }

.entity-list { max-width: 820px; margin: 0 auto; }
.entity-list li {
  display: flex;
  gap: 24px;
  padding: 18px 4px;
  border-bottom: 1px solid #e8e8ed;
  font-size: 16.5px;
}
.entity-list li:first-child { border-top: 1px solid #e8e8ed; }
.entity-list dt, .entity-list .k {
  flex: 0 0 132px;
  font-weight: 600;
  color: var(--text-gray-dark);
  font-size: 15px;
}
.entity-list .v { color: var(--text-dark); line-height: 1.6; }

.cite-note { display: block; font-size: 12.5px; color: var(--text-gray); margin-top: 8px; }

/* 关于页导语段落：统一颜色与间距，替代内联样式 */
.about-lead { color: var(--text-gray-dark); margin-bottom: 24px; }
.about-lead:last-child { margin-bottom: 0; }

@media (max-width: 680px) {
  .geo-summary { padding: 22px 22px 24px; }
  .geo-summary p, .key-points li { font-size: 16px; }
  .related-services { grid-template-columns: 1fr; }
  .entity-list li { flex-direction: column; gap: 6px; }
  .entity-list .k { flex: none; }
}

/* ---------- 联系区：微信二维码 + 电话 ---------- */
.contact-cards {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 40px;
}
.contact-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 20px;
  padding: 26px 30px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  min-width: 240px;
  transition: border-color .3s, transform .3s var(--ease-out);
}
.contact-card:hover { border-color: rgba(255,255,255,.34); transform: translateY(-3px); }
.contact-card .cc-label {
  font-size: 13px;
  letter-spacing: .1em;
  color: rgba(255,255,255,.5);
  font-weight: 600;
}
.contact-card .cc-title { font-size: 17px; font-weight: 600; color: #fff; }
.contact-card .cc-note { font-size: 13.5px; color: rgba(255,255,255,.5); line-height: 1.6; max-width: 30ch; }
.qr-frame {
  background: #fff;
  border-radius: 14px;
  padding: 10px;
  width: 168px;
  height: 168px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr-frame img { width: 100%; height: 100%; display: block; }
.cc-phone {
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: .02em;
  color: #fff;
  text-decoration: none;
}
.cc-phone:hover { color: #2997ff; }
@media (max-width: 680px) {
  .contact-cards { flex-direction: column; align-items: stretch; }
  .contact-card { min-width: 0; }
  .qr-frame { width: 156px; height: 156px; }
}