:root {
  --ink: #050a11;
  --deep: #071423;
  --navy: #0b2238;
  --panel: rgba(12, 30, 48, .72);
  --line: rgba(174, 218, 235, .16);
  --white: #f5f4ee;
  --muted: #9dacb9;
  --cyan: #27d7ef;
  --cyan-soft: #83edf7;
  --gold: #e5a34b;
  --radius: 22px;
  --shadow: 0 22px 70px rgba(0, 0, 0, .34);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--white);
  background:
    radial-gradient(circle at 80% 5%, rgba(32, 137, 181, .13), transparent 27rem),
    linear-gradient(180deg, #050a11 0%, #07111d 45%, #05090f 100%);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .13;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
  z-index: -1;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
.faxianzhixing-govcn { position: relative; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.eyebrow { margin: 0 0 12px; color: var(--cyan-soft); font-size: .77rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.section { padding: 96px 0; }
.section-tight { padding: 72px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 42px; }
.section-head h2, .split-copy h2 { margin: 0; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.2; letter-spacing: -.04em; }
.section-head p { max-width: 600px; margin: 0; color: var(--muted); }
.text-link { color: var(--cyan-soft); font-weight: 700; white-space: nowrap; }
.text-link:hover { color: #fff; }

.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; border-bottom: 1px solid transparent; transition: .3s ease; }
.site-header.scrolled { background: rgba(5, 10, 17, .88); border-color: var(--line); backdrop-filter: blur(18px); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 750; letter-spacing: -.02em; }
.brand img { width: 96px; height: 38px; object-fit: cover; object-position: center; border-radius: 8px; }
.brand span { font-size: .92rem; color: #dce6ed; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { position: relative; color: #b8c4ce; font-size: .92rem; }
.main-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -10px; height: 2px; background: var(--cyan); transition: .25s ease; }
.main-nav a:hover, .main-nav a.active { color: #fff; }
.main-nav a:hover::after, .main-nav a.active::after { right: 0; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.04); color: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 20px; height: 2px; margin: 4px auto; background: currentColor; transition: .25s; }

.hero { min-height: 800px; display: grid; place-items: center; padding: 150px 0 90px; isolation: isolate; background: linear-gradient(90deg, rgba(4,9,15,.98) 0%, rgba(4,9,15,.82) 38%, rgba(4,9,15,.18) 72%), url("../images/hero-k8-brand.jpg") center/cover no-repeat; }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 220px; z-index: -1; background: linear-gradient(transparent, var(--ink)); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 80px; align-items: center; }
.hero-copy h1 { max-width: 760px; margin: 0; font-size: clamp(3rem, 7vw, 6.4rem); line-height: .98; letter-spacing: -.065em; }
.hero-copy h1 span { display: block; color: transparent; -webkit-text-stroke: 1px rgba(245,244,238,.62); }
.hero-copy .lead { max-width: 640px; margin: 28px 0 0; color: #c5d0d8; font-size: 1.08rem; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border: 1px solid var(--cyan); border-radius: 999px; background: var(--cyan); color: #03131a; font-weight: 750; transition: .25s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(39,215,239,.24); }
.btn-ghost { background: rgba(6,15,25,.45); color: #fff; border-color: rgba(255,255,255,.2); }
.hub-panel { justify-self: end; width: min(460px, 100%); padding: 28px; border: 1px solid rgba(151,225,239,.2); border-radius: 32px; background: rgba(5,16,26,.66); backdrop-filter: blur(16px); box-shadow: var(--shadow); }
.hub-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.hub-title { font-size: .8rem; font-weight: 800; letter-spacing: .2em; }
.hub-status { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .75rem; }
.hub-status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }
.hub-nodes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; padding-top: 20px; }
.hub-node { min-height: 92px; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(145deg, rgba(255,255,255,.06), rgba(255,255,255,.015)); }
.hub-node small { display: block; color: var(--cyan-soft); letter-spacing: .15em; }
.hub-node strong { display: block; margin-top: 8px; font-size: 1.02rem; }
.scroll-note { position: absolute; bottom: 35px; left: 50%; transform: translateX(-50%); color: #91a0ad; font-size: .75rem; letter-spacing: .18em; }

.metric-strip { margin-top: -40px; z-index: 2; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(10,24,38,.88); backdrop-filter: blur(16px); box-shadow: var(--shadow); }
.metric { padding: 8px 24px; border-right: 1px solid var(--line); }
.metric:last-child { border-right: 0; }
.metric strong { display: block; font-size: 1.6rem; }
.metric span { color: var(--muted); font-size: .85rem; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(17,40,61,.75), rgba(7,18,30,.75)); transition: .3s ease; overflow: hidden; }
.card:hover { transform: translateY(-5px); border-color: rgba(72,220,239,.42); box-shadow: 0 18px 45px rgba(0,0,0,.22); }
.card .num { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 13px; background: rgba(39,215,239,.1); color: var(--cyan-soft); font-weight: 800; }
.card h3 { margin: 22px 0 10px; font-size: 1.25rem; }
.card p { margin: 0; color: var(--muted); }
.card .tag { display: inline-block; margin-top: 20px; color: #dce6ed; font-size: .78rem; letter-spacing: .08em; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.visual-card { position: relative; min-height: 480px; overflow: hidden; border: 1px solid var(--line); border-radius: 30px; box-shadow: var(--shadow); }
.visual-card img { width: 100%; height: 100%; min-height: 480px; object-fit: cover; }
.visual-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 45%, rgba(4,10,17,.7)); }
.visual-label { position: absolute; left: 24px; bottom: 22px; z-index: 2; padding: 9px 14px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; background: rgba(5,12,20,.68); backdrop-filter: blur(10px); font-size: .78rem; }
.split-copy > p { color: var(--muted); }
.feature-list { display: grid; gap: 12px; margin-top: 30px; }
.feature-item { display: grid; grid-template-columns: 34px 1fr; gap: 14px; padding: 16px 0; border-top: 1px solid var(--line); }
.feature-item b { color: var(--cyan-soft); }
.feature-item p { margin: 3px 0 0; color: var(--muted); font-size: .92rem; }

.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.filter-btn { padding: 9px 16px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--muted); cursor: pointer; }
.filter-btn.active, .filter-btn:hover { border-color: var(--cyan); background: rgba(39,215,239,.1); color: #fff; }
.filter-item.is-hidden { display: none; }
.story-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
.story-feature, .story-stack article { position: relative; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--line); }
.story-feature img { width: 100%; height: 100%; min-height: 520px; object-fit: cover; }
.story-feature .overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: end; padding: 36px; background: linear-gradient(transparent 30%, rgba(3,8,14,.92)); }
.story-feature h3 { max-width: 620px; margin: 8px 0; font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1.25; }
.story-feature p { max-width: 600px; color: #c4cfd8; }
.story-stack { display: grid; gap: 18px; }
.story-stack article { min-height: 251px; padding: 28px; background: linear-gradient(150deg, rgba(18,48,70,.84), rgba(8,17,29,.9)); }
.story-stack article::before { content: ""; position: absolute; width: 160px; height: 160px; right: -60px; top: -70px; border: 1px solid rgba(39,215,239,.25); border-radius: 50%; box-shadow: 0 0 50px rgba(39,215,239,.08); }
.story-stack h3 { margin: 50px 0 10px; }
.story-stack p { color: var(--muted); }
.tagline { color: var(--cyan-soft); font-size: .77rem; letter-spacing: .14em; }

.faq-list { max-width: 900px; margin-inline: auto; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px 0; border: 0; background: transparent; color: #fff; text-align: left; cursor: pointer; font-weight: 700; }
.faq-question::after { content: "+"; color: var(--cyan); font-size: 1.5rem; font-weight: 400; transition: .25s; }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer p { margin: 0; padding: 0 48px 24px 0; color: var(--muted); }

.page-hero { min-height: 570px; display: grid; place-items: end start; padding: 150px 0 80px; background: linear-gradient(90deg, rgba(4,9,15,.97), rgba(4,9,15,.55)), var(--page-image) center/cover; }
.page-hero h1 { max-width: 880px; margin: 0; font-size: clamp(2.7rem, 7vw, 5.6rem); line-height: 1.03; letter-spacing: -.055em; }
.page-hero p { max-width: 700px; margin: 24px 0 0; color: #c8d3dc; font-size: 1.08rem; }
.breadcrumb { display: flex; gap: 10px; margin-bottom: 25px; color: #9aaab7; font-size: .84rem; }
.breadcrumb span { color: var(--cyan-soft); }
.page-about { --page-image: url("../images/hero-k8-brand.jpg"); }
.page-service { --page-image: url("../images/k8-service-grid.jpg"); }
.page-content { --page-image: url("../images/k8-content-hub.jpg"); }
.page-guide { --page-image: url("../images/k8-guide-news.jpg"); }
.page-news { --page-image: url("../images/k8-city-content.jpg"); }
.timeline { display: grid; gap: 0; }
.timeline-row { display: grid; grid-template-columns: 150px 1fr; gap: 35px; padding: 30px 0; border-top: 1px solid var(--line); }
.timeline-row time { color: var(--cyan-soft); font-weight: 700; }
.timeline-row h3 { margin: 0 0 8px; }
.timeline-row p { margin: 0; color: var(--muted); }
.guide-steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.guide-step { counter-increment: step; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.guide-step::before { content: "0" counter(step); display: block; margin-bottom: 42px; color: var(--cyan-soft); font-size: .8rem; letter-spacing: .12em; }
.guide-step h3 { margin: 0 0 10px; }
.guide-step p { color: var(--muted); margin: 0; }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 42px; border: 1px solid rgba(39,215,239,.2); border-radius: 26px; background: radial-gradient(circle at 100% 0, rgba(39,215,239,.14), transparent 38%), #0a1b2c; }
.cta-band h2 { margin: 0; font-size: clamp(1.5rem, 3vw, 2.4rem); }
.cta-band p { margin: 8px 0 0; color: var(--muted); }

.site-footer { padding: 64px 0 28px; border-top: 1px solid var(--line); background: #04080d; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, .7fr); gap: 45px; padding-bottom: 48px; }
.footer-brand p { max-width: 430px; color: var(--muted); }
.footer-title { margin-bottom: 16px; color: #fff; font-weight: 700; }
.footer-links { display: grid; gap: 9px; color: var(--muted); font-size: .9rem; }
.footer-links a:hover { color: var(--cyan-soft); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 22px; padding-top: 24px; border-top: 1px solid var(--line); color: #8f9eaa; font-size: .82rem; }
.records { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.record { display: inline-flex; align-items: center; gap: 7px; }
.record img { width: 18px; height: 18px; object-fit: contain; }
.back-top { position: fixed; right: 24px; bottom: 24px; z-index: 30; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; background: rgba(9,24,39,.88); color: #fff; cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(10px); transition: .25s; backdrop-filter: blur(12px); }
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .main-nav { position: fixed; top: 78px; left: 20px; right: 20px; display: grid; gap: 0; padding: 14px; border: 1px solid var(--line); border-radius: 18px; background: rgba(5,12,20,.97); transform: translateY(-15px); opacity: 0; visibility: hidden; transition: .25s; }
  .main-nav.open { transform: none; opacity: 1; visibility: visible; }
  .main-nav a { padding: 12px; }
  .main-nav a::after { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .hub-panel { justify-self: start; }
  .split { grid-template-columns: 1fr; gap: 38px; }
  .story-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .container { width: min(100% - 28px, 1180px); }
  .brand span { display: none; }
  .section { padding: 72px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 14px; }
  .hero { min-height: auto; padding: 130px 0 100px; background-position: 62% center; }
  .hero-copy h1 { font-size: clamp(2.8rem, 16vw, 4.6rem); }
  .hub-panel { padding: 18px; }
  .hub-nodes { grid-template-columns: 1fr 1fr; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .metric { padding: 16px; }
  .card-grid, .guide-steps { grid-template-columns: 1fr; }
  .visual-card, .visual-card img { min-height: 340px; }
  .story-feature img { min-height: 440px; }
  .page-hero { min-height: 520px; }
  .timeline-row { grid-template-columns: 1fr; gap: 6px; }
  .cta-band, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .records { display: grid; gap: 8px; }
}

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