/* =========================================================
   快连 / LetsVPN — 主样式 (1/4) 基础与组件
   ========================================================= */
:root {
  --bg: #070b16;
  --bg-card: rgba(255,255,255,.045);
  --bg-solid: #101a30;
  --line: rgba(255,255,255,.10);
  --line-strong: rgba(255,255,255,.18);
  --text: #eaf0ff;
  --text-dim: #9fb0d0;
  --text-mute: #7185a8;
  --brand: #3b82f6;
  --brand2: #22d3ee;
  --brand3: #a78bfa;
  --accent: #a3e635;
  --grad: linear-gradient(120deg,#3b82f6 0%,#22d3ee 55%,#a78bfa 100%);
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --maxw: 1200px;
  --header-h: 68px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 16px; line-height: 1.75; letter-spacing: .01em;
  overflow-x: hidden;
  background-image:
    radial-gradient(1000px 600px at 12% -10%, rgba(59,130,246,.16), transparent 60%),
    radial-gradient(900px 500px at 92% 4%, rgba(167,139,250,.13), transparent 62%);
  background-attachment: fixed;
}
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.container.narrow { max-width: 820px; }
.center { text-align: center; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 200; background: var(--brand); color: #fff; padding: 10px 18px; border-radius: 0 0 10px 0; }
.skip-link:focus { left: 0; }
h1,h2,h3,h4 { margin: 0 0 .5em; line-height: 1.25; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(30px,4.6vw,52px); }
h2 { font-size: clamp(24px,3vw,36px); }
h3 { font-size: clamp(18px,2vw,22px); }
p { margin: 0 0 1em; color: var(--text-dim); }
p:last-child { margin-bottom: 0; }
.lead { font-size: clamp(16px,1.5vw,19px); color: var(--text-dim); }
.muted { color: var(--text-mute); }
.small { font-size: 13px; }
ul,ol { color: var(--text-dim); padding-left: 1.2em; margin: 0 0 1.2em; }
li { margin-bottom: .45em; }
strong { color: var(--text); }
code { font-family: Consolas,Menlo,monospace; }
.icon { width: 1em; height: 1em; display: inline-block; vertical-align: -.14em; flex: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
  font-size: 15px; font-weight: 600; cursor: pointer; white-space: nowrap;
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad); color: #06122a; box-shadow: 0 10px 30px rgba(59,130,246,.28); }
.btn-primary:hover { box-shadow: 0 16px 40px rgba(34,211,238,.34); }
.btn-outline { border-color: var(--line-strong); color: var(--text); background: rgba(255,255,255,.03); }
.btn-outline:hover { border-color: var(--brand); background: rgba(59,130,246,.12); }
.btn-ghost { background: rgba(255,255,255,.06); color: var(--text); border-color: var(--line); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-lg { padding: 15px 30px; font-size: 16.5px; }
.btn-block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7,11,22,.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); background: rgba(7,11,22,.92); }
.header-inner { height: var(--header-h); display: flex; align-items: center; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  flex: none; overflow: hidden;
  box-shadow: 0 6px 18px rgba(59,130,246,.35);
}
.brand-mark img { width: 40px; height: 40px; display: block; border-radius: 50%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 17px; letter-spacing: .2px; }
.brand-text em { font-style: normal; font-size: 11px; color: var(--text-mute); }
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.main-nav li { margin: 0; }
.nav-link { display: block; padding: 8px 13px; border-radius: 10px; font-size: 14.5px; color: var(--text-dim); transition: color .2s, background .2s; }
.nav-link:hover { color: var(--text); background: rgba(255,255,255,.06); }
.nav-link.is-active { color: var(--text); background: rgba(59,130,246,.16); box-shadow: inset 0 0 0 1px rgba(59,130,246,.32); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-switch {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 13px;
  border-radius: 999px; border: 1px solid var(--line); font-size: 13.5px; color: var(--text-dim);
  transition: border-color .2s, color .2s;
}
.lang-switch:hover { border-color: var(--brand); color: var(--text); }
.lang-icon { width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center; background: rgba(255,255,255,.08); font-size: 11px; font-weight: 700; }
.nav-toggle {
  display: none; width: 40px; height: 40px; border-radius: 11px; border: 1px solid var(--line);
  background: rgba(255,255,255,.05); color: var(--text); font-size: 20px; cursor: pointer;
}
/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(56px,8vw,104px) 0 clamp(26px,3vw,42px); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: .62; }
.orb-1 { width: 520px; height: 520px; background: rgba(59,130,246,.5); top: -160px; left: -120px; animation: float 14s ease-in-out infinite; }
.orb-2 { width: 460px; height: 460px; background: rgba(167,139,250,.42); top: -80px; right: -120px; animation: float 18s ease-in-out infinite reverse; }
.grid-fx {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
}
@keyframes float { 0%,100% { transform: translate(0,0); } 50% { transform: translate(30px,24px); } }
.hero-inner { position: relative; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px; padding: 8px 18px; border-radius: 999px;
  margin-bottom: 22px; background: rgba(255,255,255,.06); border: 1px solid var(--line-strong);
  font-size: 13.5px; color: var(--text-dim);
}
.hero-badge .icon { color: var(--brand2); }
.hero-title {
  background: linear-gradient(180deg,#fff 30%,#b9cdf5 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: -.02em; margin-bottom: 18px;
}
/* 不支持 background-clip:text 的浏览器回退为实色文字，避免标题整体隐形 */
@supports not ((background-clip: text) or (-webkit-background-clip: text)) {
  .hero-title { color: #fff; }
  .stat-value, .server-stats strong { color: var(--brand2); }
}
.hero-sub { max-width: 700px; margin: 0 auto 34px; font-size: clamp(15.5px,1.7vw,18.5px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin: 30px 0 22px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; font-size: 14px; color: var(--text-mute); }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust .icon { color: var(--accent); }
.stats-bar { display: grid; grid-template-columns: repeat(3,minmax(120px,1fr)); gap: 10px; margin: 28px auto 0; max-width: 560px; }
.stat { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 12px; }
.stat-value { font-size: 34px; font-weight: 800; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-value em { font-style: normal; font-size: 16px; margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--text-mute); margin-top: 8px; }

/* ---------- 区块 ---------- */
.section { padding: clamp(52px,6.5vw,92px) 0; position: relative; }
.section.soft { background: rgba(255,255,255,.022); border-block: 1px solid var(--line); }
.section-head { margin-bottom: 40px; max-width: 720px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { margin: 0; }

/* ---------- 特性卡片 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(320px,1fr)); gap: 20px; }
.feature-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 28px; position: relative; overflow: hidden;
  transition: transform .3s ease, border-color .3s ease;
}
.feature-card::after {
  content: ""; position: absolute; inset: 0; opacity: 0; pointer-events: none;
  background: radial-gradient(420px 220px at 12% 0%,rgba(59,130,246,.22),transparent 70%);
  transition: opacity .35s ease;
}
.feature-card:hover { transform: translateY(-6px); border-color: rgba(59,130,246,.45); }
.feature-card:hover::after { opacity: 1; }
.feature-icon {
  width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center;
  font-size: 24px; margin-bottom: 18px; color: #06122a; background: var(--grad);
  box-shadow: 0 10px 26px rgba(59,130,246,.28);
}
.feature-card h3 { font-size: 19px; margin-bottom: 10px; }
.feature-card p { font-size: 15px; margin: 0; }
/* ---------- 下载卡片 ---------- */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); gap: 16px; }
.download-card {
  display: flex; align-items: center; gap: 14px; background: var(--bg-card);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px;
  transition: transform .25s, border-color .25s, background .25s;
}
.download-card:hover { transform: translateY(-4px); border-color: rgba(34,211,238,.5); background: rgba(34,211,238,.07); }
.download-icon { font-size: 28px; color: var(--brand2); }
.download-meta { display: flex; flex-direction: column; line-height: 1.35; }
.download-meta strong { font-size: 16px; }
.download-meta em { font-style: normal; font-size: 12.5px; color: var(--text-mute); }
.download-arrow { margin-left: auto; color: var(--text-mute); font-size: 18px; transition: transform .25s, color .25s; }
.download-card:hover .download-arrow { transform: translateX(4px); color: var(--brand2); }
.download-note { display: flex; align-items: center; gap: 10px; justify-content: center; margin-top: 24px; font-size: 13.5px; color: var(--text-mute); text-align: center; }
.download-note .icon { color: var(--accent); }

/* ---------- 服务器列表 ---------- */
.server-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); gap: 18px; }
.server-card { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.server-card h3 { font-size: 16px; margin-bottom: 14px; color: var(--text); }
.server-card ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 16px; }
.server-card li { font-size: 14px; color: var(--text-dim); break-inside: avoid; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand2); flex: none; box-shadow: 0 0 8px rgba(34,211,238,.8); }
.server-stats { display: grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap: 16px; margin-top: 26px; }
.server-stats > div { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-align: left; }
.server-stats strong { display: block; font-size: 28px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.server-stats span { font-size: 13px; color: var(--text-mute); }

/* ---------- 认证徽章 ---------- */
.cert-row { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cert-badge {
  display: inline-flex; align-items: center; gap: 11px; padding: 14px 20px;
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
  font-size: 14px; color: var(--text-dim); transition: border-color .25s, transform .25s, color .25s;
}
.cert-badge:hover { border-color: var(--brand); color: var(--text); transform: translateY(-3px); }
.cert-icon { font-size: 20px; color: var(--accent); }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .25s, background .25s; }
.faq-item[open] { border-color: rgba(59,130,246,.45); background: rgba(59,130,246,.06); }
.faq-item summary { list-style: none; cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: 15.5px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-arrow { color: var(--text-mute); transition: transform .3s ease; flex: none; }
.faq-item[open] .faq-arrow { transform: rotate(90deg); color: var(--brand2); }
.faq-answer { padding: 0 22px 20px; }
.faq-answer p { margin: 0; font-size: 14.8px; }

/* ---------- CTA ---------- */
.cta-band {
  padding: clamp(40px,5vw,64px) 0;
  background: linear-gradient(120deg,rgba(59,130,246,.18),rgba(34,211,238,.12) 50%,rgba(167,139,250,.16));
  border-block: 1px solid var(--line);
}
.cta-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 26px; }
.cta-inner h2 { margin-bottom: 8px; }
.cta-inner p { margin: 0; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
/* ---------- 页脚 ---------- */
.site-main { min-height: 62vh; }
.site-footer { padding: 64px 0 26px; background: rgba(4,7,14,.6); border-top: 1px solid var(--line); margin-top: 40px; }
.site-note { font-size: 13px; color: var(--text-mute); text-align: center; margin: 0 0 26px; }
.footer-top { display: grid; grid-template-columns: 1.6fr repeat(4,1fr); gap: 32px; }
.footer-brand .brand { margin-bottom: 16px; }
.footer-slogan { font-size: 14px; max-width: 320px; }
.socials { display: flex; gap: 10px; margin-top: 18px; }
.socials a {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: rgba(255,255,255,.05); border: 1px solid var(--line); color: var(--text-dim);
  font-size: 17px; transition: all .25s;
}
.socials a:hover { color: #fff; border-color: var(--brand); background: rgba(59,130,246,.18); transform: translateY(-2px); }
.footer-col h4 { font-size: 14px; margin-bottom: 16px; color: var(--text); }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: var(--text-mute); transition: color .2s; }
.footer-col a:hover { color: var(--brand2); }
.footer-bottom {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13px;
}
.footer-bottom p { margin: 0; color: var(--text-mute); }
.footer-contact { display: inline-flex; align-items: center; gap: 8px; }
.footer-contact a { color: var(--text-dim); }
/* ---------- 悬浮客服 ---------- */
.support-fab { position: fixed; right: 20px; bottom: 20px; z-index: 90; }
.support-toggle {
  width: 54px; height: 54px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--grad); color: #06122a; font-size: 24px; display: grid; place-items: center;
  box-shadow: 0 12px 34px rgba(59,130,246,.42); transition: transform .25s ease;
}
.support-toggle:hover { transform: scale(1.07); }
.support-panel {
  position: absolute; right: 0; bottom: 68px; width: 280px; padding: 18px;
  background: rgba(12,19,34,.97); border: 1px solid var(--line-strong); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all .28s cubic-bezier(.4,0,.2,1);
}
.support-fab.open .support-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.support-head strong { display: block; font-size: 15px; }
.support-head span { font-size: 12.5px; color: var(--text-mute); }
.support-panel ul { list-style: none; margin: 14px 0 10px; padding: 0; }
.support-panel li { margin-bottom: 4px; }
.support-panel li a { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; font-size: 14px; color: var(--text-dim); transition: background .2s, color .2s; }
.support-panel li a:hover { background: rgba(255,255,255,.06); color: var(--text); }
.support-panel li .icon { color: var(--brand2); font-size: 17px; }
.support-note { font-size: 12px; color: var(--text-mute); margin: 0; }

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed; right: 22px; bottom: 86px; z-index: 88; width: 42px; height: 42px;
  border-radius: 50%; border: 1px solid var(--line-strong); background: rgba(12,19,34,.9);
  color: var(--text-dim); font-size: 18px; cursor: pointer; display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(10px); transition: all .25s;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { color: var(--text); border-color: var(--brand); }

/* ---------- 出现动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease var(--d,0s), transform .6s ease var(--d,0s); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .main-nav {
    position: fixed; inset: var(--header-h) 0 auto 0; background: rgba(7,11,22,.98);
    backdrop-filter: blur(20px); border-bottom: 1px solid var(--line);
    padding: 14px 22px 22px; transform: translateY(-120%);
    transition: transform .32s cubic-bezier(.4,0,.2,1);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link { padding: 13px 14px; font-size: 16px; }
  .nav-toggle { display: grid; place-items: center; }
  .header-actions .btn-sm { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .lang-text { display: none; }
  .brand-text em { display: none; }
  .stats-bar { grid-template-columns: repeat(3,1fr); gap: 8px; }
  .stat { padding: 14px 8px; }
  .stat-value { font-size: 26px; }
  .server-card ul { columns: 1; }
  .footer-top { grid-template-columns: 1fr; gap: 26px; }
  .hero-actions .btn { width: 100%; }
  .support-fab { right: 14px; bottom: 14px; }
  .back-to-top { right: 16px; bottom: 78px; }
}
/* ---------- node dashboard ---------- */
.dash { display: block; }
.dash-map { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px 24px 18px; }
.dash-bar { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; margin-bottom: 12px; }
.dash-bar-title { font-size: 15px; font-weight: 700; color: var(--text); }
.dash-bar-meta { font-size: 12.5px; color: var(--text-mute); text-align: right; }
.dash-canvas { position: relative; }
.dash-svg { display: block; width: 100%; height: auto; }
.dash-grat line { stroke: rgba(255,255,255,.055); stroke-width: 1; }
.dash-land polygon { fill: url(#dashDots); stroke: rgba(148,178,235,.20); stroke-width: .8; }
.dash-node { cursor: pointer; outline: none; }
.dash-node-dot { fill: var(--node, var(--brand2)); transition: r .2s ease; filter: drop-shadow(0 0 4px var(--node, rgba(34,211,238,.75))); animation: dashBlink 3s ease-in-out infinite; animation-delay: var(--d, 0s); }
@keyframes dashBlink { 0%, 100% { opacity: .45; } 50% { opacity: 1; } }
.dash-node-hit { fill: transparent; }
.dash-node-pulse { fill: none; stroke-width: 1.4; opacity: 0; transform-box: fill-box; transform-origin: center; }
.dash-label { fill: rgba(228,238,255,.88); font-size: 12.5px; font-weight: 600; letter-spacing: .01em; paint-order: stroke; stroke: rgba(7,11,22,.92); stroke-width: 3.4px; stroke-linejoin: round; pointer-events: none; }
.dash-node:hover .dash-node-dot, .dash-node:focus .dash-node-dot, .dash-node.is-active .dash-node-dot { r: 5.8; }
.dash-node:hover .dash-label, .dash-node:focus .dash-label { fill: #fff; }
.dash-node.is-active .dash-node-pulse { animation: dashPulse 1.9s ease-out infinite; }
@keyframes dashPulse { 0% { transform: scale(.45); opacity: .70; } 100% { transform: scale(2.8); opacity: 0; } }
.dash-node.is-dim { opacity: .22; }
.dash-tip { position: absolute; left: 0; top: 0; pointer-events: none; background: rgba(12,19,34,.97); border: 1px solid var(--line-strong); border-radius: 10px; padding: 7px 12px; font-size: 13px; color: var(--text); opacity: 0; transform: translate(-50%,-140%); transition: opacity .18s ease; white-space: nowrap; box-shadow: var(--shadow); }
.dash-tip small { display: block; margin-top: 2px; font-size: 11.5px; color: var(--text-mute); }
.dash-tip.show { opacity: 1; }
.dash-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 16px; }
.dash-legend-label { font-size: 12.5px; color: var(--text-mute); margin-right: 2px; }
.dash-chip { display: inline-flex; align-items: center; gap: 8px; padding: 6px 13px; border-radius: 999px; background: rgba(255,255,255,.04); border: 1px solid var(--line); color: var(--text-dim); font-size: 13px; cursor: pointer; transition: all .2s; }
.dash-chip:hover { border-color: var(--brand); color: var(--text); }
.dash-chip.is-active { border-color: rgba(34,211,238,.5); background: rgba(34,211,238,.12); color: var(--text); }
.dash-chip b { color: var(--text); font-weight: 700; }
.dash-chip-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--node, var(--brand2)); box-shadow: 0 0 8px var(--node, rgba(34,211,238,.7)); }
.dash-side { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin-top: 14px; }
.dash-region { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 15px 17px; transition: border-color .2s, background .2s; }
.dash-region.is-active { border-color: rgba(34,211,238,.45); background: rgba(34,211,238,.07); }
.dash-region-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 11px; }
.dash-region-name { font-size: 14.5px; font-weight: 700; color: var(--text); }
.dash-region-count { font-size: 12.5px; color: var(--text-mute); }
.dash-cities { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.dash-city { font-size: 12.5px; color: var(--text-dim); padding: 4px 10px; border-radius: 999px; background: rgba(255,255,255,.04); border: 1px solid var(--line); transition: all .2s; }
.dash-city.is-active { color: #06122a; background: var(--node, var(--brand2)); border-color: transparent; }
.dash-stats { margin-top: 22px; }
.dash-kpi { font-variant-numeric: tabular-nums; }
@media (max-width: 1080px) {
  .dash-side { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 640px) {
  .dash-side { grid-template-columns: 1fr; }
  .dash-bar { flex-direction: column; align-items: flex-start; gap: 4px; }
  .dash-bar-meta { text-align: left; }
  .dash-map { padding: 18px 16px 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .dash-node-dot { animation: none; }
  .dash-node.is-active .dash-node-pulse { animation: none; opacity: .5; }
}
/* THEME:kuailianvpn.rest START */
/* ============================================================
   THEME: kuailianvpn.rest  -  极简编辑 (Near Black + Single Amber)
   FAQ 直答：无阴影、细线、大留白的克制阅读样式
   ============================================================ */
:root {
  --bg: #0a0a0a;
  --bg-card: rgba(255,255,255,.028);
  --bg-solid: #141414;
  --line: rgba(255,255,255,.14);
  --line-strong: rgba(255,255,255,.26);
  --text: #f2f2f2;
  --text-dim: #b8b8b8;
  --text-mute: #8c8c8c;
  --brand: #e5e5e5;
  --brand2: #fbbf24;
  --brand3: #a3a3a3;
  --accent: #fbbf24;
  --grad: linear-gradient(120deg,#f5f5f5 0%,#d4d4d4 62%,#fbbf24 100%);
  --radius: 2px;
  --radius-lg: 3px;
  --shadow: none;
  --font-head: "Songti SC","STSong","Noto Serif SC",Georgia,"Times New Roman",serif;
  --brand-soft: rgba(255,255,255,.06);
}
h1, h2, h3, h4, .hero-title, .section-head h2, .page-title { font-family: var(--font-head); font-weight: 600; letter-spacing: .005em; }
.section-head h2 { position: relative; }
.section-head.center h2::after {
  content: ""; display: block; width: 28px; height: 1px; margin: 22px auto 0; background: var(--brand2);
}
.section-head:not(.center) h2 { padding-left: 16px; }
.section-head:not(.center) h2::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: .74em; background: var(--brand2);
}
.btn { border-radius: 2px; letter-spacing: .02em; }
.btn-primary { background: #f2f2f2; color: #0a0a0a; box-shadow: none; }
.btn-primary:hover { background: var(--brand2); color: #0a0a0a; }
.btn-outline { border-color: var(--line-strong); color: var(--text); background: transparent; }
.btn-outline:hover { background: #f2f2f2; color: #0a0a0a; border-color: #f2f2f2; }
.btn-ghost { border-color: var(--line); color: var(--text-dim); }
.btn-ghost:hover { border-color: var(--text); color: var(--text); }
.feature-card, .download-card, .cert-badge, .faq-item, .stat, .dash-region {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: none;
  backdrop-filter: none;
}
.feature-card { border-radius: var(--radius-lg); }
.feature-card:hover, .download-card:hover {
  border-color: var(--brand2); box-shadow: none; transform: none; background: rgba(255,255,255,.02);
}
.feature-icon, .cert-icon { color: var(--brand2); }
.site-header { background: rgba(10,10,10,.92); border-bottom: 1px solid var(--line); }
.nav-link { position: relative; }
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 1px;
  background: var(--brand2); transition: right .25s ease;
}
.nav-link:hover::after, .nav-link.is-active::after { right: 0; }
.nav-link.is-active { color: var(--text); }
.brand-text strong { font-family: var(--font-head); letter-spacing: .08em; }
.brand-text em { color: var(--text-mute); }
.hero-bg { background:
  linear-gradient(180deg, rgba(255,255,255,.035), transparent 42%),
  radial-gradient(520px 300px at 50% 0%, rgba(251,191,36,.07), transparent 70%);
}
.orb { display: none; }
.hero-badge { border-color: var(--line-strong); color: var(--text-dim); background: transparent; border-radius: 2px; }
.stats-bar { border-color: var(--line); background: transparent; border-radius: var(--radius); }
.dash-node[data-region="asia"] { --node: #e5e5e5 !important; }
.dash-node[data-region="europe"] { --node: #fbbf24 !important; }
.dash-node[data-region="americas"] { --node: #a3a3a3 !important; }
.dash-node[data-region="others"] { --node: #d4d4d4 !important; }
.dash-chip { border-radius: 2px; }
.footer-bottom, .site-note { color: var(--text-mute); }
::selection { background: rgba(251,191,36,.34); }
/* THEME:kuailianvpn.rest END */