/* ============================================================
   饿饭VPN · 独立主题样式（墨绿底 + 青绿强调）
   布局特色：协议卡片 + 节点国家墙 + 设备矩阵，与另两站完全不同
   ============================================================ */
:root {
  --bg: #070d0b;
  --bg-2: #0b1311;
  --card: #0e1815;
  --line: rgba(52, 211, 153, 0.18);
  --text: #e9f5f0;
  --muted: #8fb3a6;
  --green: #10b981;
  --mint: #34d399;
  --grad: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --radius: 16px;
  --shadow: 0 16px 40px rgba(16, 185, 129, 0.16);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ---------- App bar ---------- */
.appbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(7, 13, 11, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s;
}
.appbar.scrolled { border-bottom-color: var(--line); background: rgba(7, 13, 11, 0.96); }
.appbar-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
}
.brand svg { width: 30px; height: 30px; }
.gnav { display: flex; gap: 30px; }
.gnav a { font-size: 15px; color: var(--muted); transition: color 0.2s; }
.gnav a:hover, .gnav a.cur { color: #fff; }
.gnav a.cur { color: var(--mint); }
.gright { display: flex; align-items: center; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-solid {
  background: var(--grad);
  color: #03130c;
  box-shadow: 0 8px 22px rgba(16, 185, 129, 0.35);
}
.btn-solid:hover { box-shadow: 0 12px 30px rgba(16, 185, 129, 0.5); }
.btn-line {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
.btn-lg { padding: 14px 32px; font-size: 16px; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { width: 22px; height: 2px; background: #fff; border-radius: 2px; }
.mmenu {
  display: none;
  position: fixed; inset: 0;
  z-index: 200;
  background: rgba(7, 13, 11, 0.98);
  padding: 72px 28px 28px;
  flex-direction: column;
  gap: 18px;
}
.mmenu.open { display: flex; }
.mmenu a { font-size: 20px; padding: 10px 0; }
.mclose { position: absolute; top: 20px; right: 24px; font-size: 34px; color: var(--muted); cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 168px 0 84px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(760px 400px at 50% -5%, rgba(16, 185, 129, 0.2), transparent 62%),
    radial-gradient(500px 300px at 85% 70%, rgba(52, 211, 153, 0.1), transparent 60%),
    radial-gradient(460px 280px at 10% 60%, rgba(16, 185, 129, 0.08), transparent 60%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 780px; margin: 0 auto; text-align: center; }
.pill {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--mint);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.35);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 22px;
}
.hero h1 { font-size: 50px; line-height: 1.2; font-weight: 800; letter-spacing: 1px; margin-bottom: 18px; }
.hero h1 b {
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p { font-size: 17px; color: var(--muted); max-width: 600px; margin: 0 auto 30px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 26px; }
.hero-badges { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.hero-badges span { font-size: 13px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 5px 13px; }
.hero-badges b { color: #fff; }

/* ---------- Metrics ---------- */
.metric-bar { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 32px 0; }
.metric { text-align: center; }
.metric .n { font-size: 32px; font-weight: 800; color: var(--mint); }
.metric .t { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ---------- Section ---------- */
.sec { padding: 90px 0; }
.sec.tint { background: var(--bg-2); }
.sec-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.sec-tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--mint); margin-bottom: 12px; }
.sec-head h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; }
.sec-intro { color: var(--muted); font-size: 16px; }

/* ---------- 协议卡片（2列） ---------- */
.proto-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.proto-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform 0.25s, border-color 0.25s;
}
.proto-card:hover { transform: translateY(-4px); border-color: rgba(52, 211, 153, 0.5); }
.proto-card .pname { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.proto-card .pname i {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--mint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-style: normal;
  font-size: 13px;
  font-weight: 800;
}
.proto-card p { font-size: 14px; color: var(--muted); }
.proto-card .badge { display: inline-block; margin-top: 12px; font-size: 12px; color: var(--mint); background: rgba(16, 185, 129, 0.1); border-radius: 999px; padding: 3px 10px; }

/* ---------- 节点国家墙 ---------- */
.country-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
}
.country {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 14px;
}
.country .lat { color: var(--mint); font-weight: 700; font-size: 13px; }
.country .e { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 8px rgba(52, 211, 153, 0.8); }

/* ---------- 设备矩阵 ---------- */
.dev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 900px; margin: 0 auto; }
.dev-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}
.dev-card .dico { font-size: 28px; margin-bottom: 10px; }
.dev-card h3 { font-size: 16px; margin-bottom: 6px; }
.dev-card p { font-size: 13px; color: var(--muted); }

/* ---------- FAQ ---------- */
.qa { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.qa details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.qa summary {
  cursor: pointer;
  padding: 17px 20px;
  font-size: 16px;
  font-weight: 600;
  list-style: none;
  padding-right: 44px;
  position: relative;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: "＋";
  position: absolute;
  right: 20px; top: 50%;
  transform: translateY(-50%);
  color: var(--mint);
  transition: transform 0.25s;
}
.qa details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.qa details[open] summary { color: var(--mint); }
.qa details p { padding: 0 20px 18px; font-size: 15px; color: var(--muted); }

/* ---------- CTA ---------- */
.banner {
  max-width: 1140px;
  margin: 0 auto 84px;
  border-radius: 22px;
  background: var(--grad);
  text-align: center;
  padding: 58px 28px;
  color: #03130c;
}
.banner h2 { font-size: 30px; font-weight: 800; margin-bottom: 10px; }
.banner p { font-size: 16px; opacity: 0.9; margin-bottom: 22px; }
.banner .btn { background: #03130c; color: #fff; box-shadow: 0 8px 24px rgba(0,0,0,0.3); }

/* ---------- Footer ---------- */
.foot { background: var(--bg-2); border-top: 1px solid var(--line); padding: 56px 0 28px; }
.foot-note {
  border: 1px dashed rgba(52, 211, 153, 0.3);
  border-radius: 12px;
  padding: 14px 20px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 38px;
}
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 38px; }
.foot-grid h4 { font-size: 15px; margin-bottom: 14px; }
.foot-grid li { margin-bottom: 10px; font-size: 14px; color: var(--muted); }
.foot-grid li a:hover { color: #fff; }
.foot .brand p { font-size: 14px; color: var(--muted); margin-top: 14px; }
.copy { border-top: 1px solid var(--line); padding-top: 22px; text-align: center; font-size: 13px; color: var(--muted); }

/* ---------- Floating ---------- */
.float { position: fixed; right: 22px; bottom: 22px; z-index: 90; display: flex; flex-direction: column; gap: 12px; }
.fbtn {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--grad);
  color: #03130c;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px rgba(16, 185, 129, 0.4);
  transition: transform 0.2s, opacity 0.3s;
}
.fbtn svg { width: 22px; height: 22px; }
.fbtn:hover { transform: translateY(-3px); }
.fbtn.gotop { opacity: 0; pointer-events: none; }
.fbtn.gotop.show { opacity: 1; pointer-events: auto; }

/* ---------- 内页 Hero ---------- */
.page-hero { padding: 146px 0 64px; }
.page-hero h1 { font-size: 38px; }

/* ---------- 下载页 ---------- */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.dl-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; text-align: center; }
.dl-card .dico { font-size: 30px; margin-bottom: 10px; }
.dl-card h3 { font-size: 17px; margin-bottom: 6px; }
.dl-card p { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.dl-card .btn { width: 100%; }
.req-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 820px; margin: 0 auto; }
.req-list li { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; font-size: 14px; color: var(--muted); }
.req-list li b { display: block; color: #fff; margin-bottom: 2px; }
.signup { max-width: 600px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 32px 28px; }
.signup label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.signup input, .signup select { width: 100%; background: rgba(255,255,255,0.05); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; color: #fff; font-size: 15px; margin-bottom: 16px; outline: none; }
.signup input:focus, .signup select:focus { border-color: var(--mint); }
.signup .msg { text-align: center; font-size: 14px; color: var(--muted); padding-top: 8px; }
.signup .msg b { color: var(--mint); }
.hist { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.hist-item { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 24px; }
.hist-item .v { color: var(--mint); font-weight: 700; }
.hist-item .d { font-size: 13px; color: var(--muted); margin-left: 10px; }
.hist-item ul { margin-top: 10px; }
.hist-item li { font-size: 14px; color: var(--muted); padding: 3px 0 3px 18px; position: relative; }
.hist-item li::before { content: "◆"; position: absolute; left: 2px; color: var(--mint); font-size: 10px; top: 7px; }

/* ---------- 资讯页（侧边标签 + 列表） ---------- */
.nlayout { display: grid; grid-template-columns: 1fr 300px; gap: 36px; max-width: 1020px; margin: 0 auto; }
.nlist { display: flex; flex-direction: column; gap: 16px; }
.nitem {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  position: relative;
  padding-left: 92px;
}
.nitem .ndate {
  position: absolute;
  left: 22px; top: 24px;
  width: 56px;
  text-align: center;
  border-right: 1px solid var(--line);
  padding-right: 14px;
}
.nitem .ndate b { display: block; font-size: 20px; color: var(--mint); }
.nitem .ndate span { font-size: 11px; color: var(--muted); }
.nitem .ncat { font-size: 12px; color: var(--mint); background: rgba(16,185,129,0.1); border-radius: 999px; padding: 3px 10px; }
.nitem h3 { font-size: 17px; margin: 8px 0 6px; }
.nitem p { font-size: 14px; color: var(--muted); }
.aside-box { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin-bottom: 18px; }
.aside-box h3 { font-size: 15px; margin-bottom: 14px; }
.aside-box li { font-size: 14px; color: var(--muted); padding: 8px 0; border-bottom: 1px dashed rgba(52,211,153,0.2); }
.aside-box li:last-child { border-bottom: none; }
.aside-box li::before { content: "›"; color: var(--mint); margin-right: 8px; }

/* ---------- 关于页 ---------- */
.story-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.story-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; }
.story-card .sno { font-size: 28px; font-weight: 800; color: transparent; -webkit-text-stroke: 1px var(--mint); margin-bottom: 10px; }
.story-card h3 { font-size: 17px; margin-bottom: 8px; }
.story-card p { font-size: 14px; color: var(--muted); }
.milestones { max-width: 720px; margin: 0 auto; position: relative; padding-left: 36px; }
.milestones::before { content: ""; position: absolute; left: 12px; top: 6px; bottom: 6px; width: 2px; background: var(--grad); opacity: 0.5; }
.ms { position: relative; padding-bottom: 26px; }
.ms::before { content: ""; position: absolute; left: -30px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--grad); }
.ms .yr { font-size: 13px; color: var(--mint); font-weight: 700; }
.ms h3 { font-size: 17px; margin: 2px 0 6px; }
.ms p { font-size: 14px; color: var(--muted); }
.cbox { max-width: 620px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; }
.cbox li { font-size: 14px; color: var(--muted); padding: 8px 0; border-bottom: 1px dashed var(--line); display: flex; gap: 8px; }
.cbox li:last-child { border-bottom: none; }
.cbox li::before { content: "•"; color: var(--mint); }

/* ---------- 动画 ---------- */
.fade { opacity: 0; transform: translateY(26px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade.show { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .proto-grid { grid-template-columns: 1fr; }
  .dev-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-grid { grid-template-columns: repeat(2, 1fr); }
  .nlayout { grid-template-columns: 1fr; }
  .aside { display: none; }
}
@media (max-width: 768px) {
  .gnav { display: none; }
  .gright .btn { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 138px 0 60px; }
  .hero h1 { font-size: 34px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .dev-grid { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
  .story-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  .req-list { grid-template-columns: 1fr; }
  .nitem { padding-left: 22px; }
  .nitem .ndate { position: static; width: auto; text-align: left; border-right: none; padding-right: 0; display: flex; gap: 8px; align-items: baseline; margin-bottom: 8px; }
  .sec { padding: 62px 0; }
  .sec-head h2 { font-size: 26px; }
  .page-hero h1 { font-size: 28px; }
}