/* ==========================================================================
   STEAM 全球账号商城 — 样式表
   科技感 / 暗色霓虹 / 玻璃拟态 / 全终端自适应
   ========================================================================== */

/* ---------- 1. 变量与重置 ---------- */
:root {
  --bg: #04060e;
  --bg-soft: #080c18;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-strong: rgba(255, 255, 255, 0.06);
  --line: rgba(122, 180, 255, 0.14);
  --line-strong: rgba(122, 180, 255, 0.28);

  --cyan: #22d3ee;
  --blue: #3b82f6;
  --violet: #8b5cf6;
  --pink: #ec4899;
  --green: #34d399;
  --amber: #fbbf24;

  --text: #e8eefb;
  --text-dim: #a8b6cc;
  --text-mute: #74839b;

  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 26px;

  --shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.85);
  --glow-cyan: 0 0 32px rgba(34, 211, 238, 0.35);
  --glow-violet: 0 0 32px rgba(139, 92, 246, 0.32);

  --nav-h: 72px;
  --container: 1240px;

  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC",
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-tech: "Orbitron", var(--font);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body.no-scroll { overflow: hidden; }

img, svg { display: block; max-width: 100%; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
input { font-family: inherit; }

::selection { background: rgba(34, 211, 238, 0.35); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #05080f; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  border-radius: 99px;
  border: 2px solid #05080f;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 2. 背景特效 ---------- */
.bg-fx {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(1100px 700px at 12% -10%, rgba(34, 211, 238, 0.13), transparent 60%),
    radial-gradient(900px 620px at 88% 8%, rgba(139, 92, 246, 0.15), transparent 62%),
    radial-gradient(800px 800px at 50% 110%, rgba(59, 130, 246, 0.1), transparent 62%),
    linear-gradient(180deg, #04060e 0%, #060a14 50%, #04060e 100%);
}

.bg-grid {
  position: absolute;
  inset: -2px;
  background-image:
    linear-gradient(rgba(122, 180, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 180, 255, 0.055) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 78%);
  animation: gridDrift 40s linear infinite;
}

@keyframes gridDrift {
  to { background-position: 62px 62px, 62px 62px; }
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.4;
  will-change: transform;
}
.orb-1 { width: 460px; height: 460px; top: -140px; left: -120px; background: #06b6d4; animation: floatOrb 18s ease-in-out infinite; }
.orb-2 { width: 520px; height: 520px; top: 22%; right: -180px; background: #7c3aed; animation: floatOrb 22s ease-in-out infinite reverse; }
.orb-3 { width: 420px; height: 420px; bottom: -120px; left: 32%; background: #2563eb; animation: floatOrb 26s ease-in-out infinite; }

@keyframes floatOrb {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(40px, -50px, 0) scale(1.12); }
}

#particles { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.55; }

.bg-noise {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

/* ---------- 3. 按钮 ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: 99px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform 0.25s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn:active { transform: scale(0.97); }

.btn-primary {
  color: #04121a;
  background: linear-gradient(120deg, var(--cyan) 0%, #4dd0ff 42%, var(--violet) 100%);
  background-size: 180% 180%;
  box-shadow: 0 10px 34px -12px rgba(34, 211, 238, 0.75);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 42px -12px rgba(34, 211, 238, 0.9);
  animation: gradShift 3s ease infinite;
}
@keyframes gradShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: 0; left: -120%;
  width: 60%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.6), transparent);
  transform: skewX(-18deg);
  transition: left 0.6s ease;
}
.btn-primary:hover::after { left: 140%; }

.btn-outline {
  color: var(--text);
  border: 1px solid var(--line-strong);
  background: rgba(122, 180, 255, 0.05);
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  border-color: var(--cyan);
  color: #d8faff;
  background: rgba(34, 211, 238, 0.12);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

.btn-ghost {
  color: var(--text-dim);
  border: 1px solid var(--line);
}
.btn-ghost:hover { color: #fff; border-color: var(--cyan); background: rgba(34, 211, 238, 0.1); }

.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-lg { padding: 17px 38px; font-size: 17px; }
.btn-block { width: 100%; }

/* ---------- 4. 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease, height 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  height: 64px;
  background: rgba(5, 8, 16, 0.78);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom-color: var(--line);
  box-shadow: 0 12px 40px -20px rgba(0, 0, 0, 0.9);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

.logo { display: flex; align-items: center; gap: 11px; flex: none; }
.logo-mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 12px;
  color: #04121a;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 22px -4px rgba(34, 211, 238, 0.7);
  transition: transform 0.4s cubic-bezier(.34,1.56,.64,1);
}
.logo-mark svg { width: 22px; height: 22px; animation: spinSlow 14s linear infinite; }
@keyframes spinSlow { to { transform: rotate(360deg); } }
.logo:hover .logo-mark { transform: rotate(-12deg) scale(1.06); }

.logo-text {
  font-family: var(--font-tech);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.14em;
  background: linear-gradient(100deg, #fff, #9be9ff 45%, #c4b5fd);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo-text em {
  font-style: normal;
  font-family: var(--font);
  font-size: 14px;
  letter-spacing: 0.1em;
  margin-left: 4px;
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
}

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  padding: 9px 15px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dim);
  border-radius: 99px;
  transition: color 0.25s ease, background 0.25s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 3px;
  width: 0; height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transform: translateX(-50%);
  transition: width 0.3s ease;
}
.nav-link:hover { color: #fff; background: rgba(122, 180, 255, 0.08); }
.nav-link.active { color: #fff; }
.nav-link.active::after { width: 22px; }

.nav-right { display: flex; align-items: center; gap: 12px; }

.burger {
  display: none;
  width: 42px; height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(122, 180, 255, 0.06);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.burger span {
  display: block;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.3s ease, opacity 0.25s ease;
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mask {
  position: fixed;
  inset: 0;
  z-index: 880;
  background: rgba(2, 4, 10, 0.6);
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.nav-mask.show { opacity: 1; visibility: visible; }

/* ---------- 5. Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 70px) 0 0;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
  padding-bottom: 72px;
}

.tagline {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 16px 7px 12px;
  border-radius: 99px;
  border: 1px solid var(--line-strong);
  background: rgba(34, 211, 238, 0.07);
  font-size: 13.5px;
  color: #b8f0ff;
  letter-spacing: 0.03em;
  margin-bottom: 26px;
}
.tagline .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6);
  animation: pulseDot 2s infinite;
}
@keyframes pulseDot {
  70% { box-shadow: 0 0 0 9px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

.hero-title {
  font-size: clamp(32px, 5.2vw, 62px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
}
.grad {
  background: linear-gradient(100deg, var(--cyan), #7dd3fc 40%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 24px rgba(34, 211, 238, 0.28));
}
.grad-2 {
  background: linear-gradient(100deg, #fbbf24, #f472b6 50%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 24px rgba(236, 72, 153, 0.24));
}

.hero-desc {
  font-size: 16.5px;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 34px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 46px; }

.hero-stats {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.stat-num {
  font-family: var(--font-tech);
  font-size: clamp(20px, 2.4vw, 27px);
  font-weight: 700;
  background: linear-gradient(100deg, #fff, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}
.stat-label { font-size: 13px; color: var(--text-mute); letter-spacing: 0.04em; }
.stat-line { width: 1px; height: 34px; background: var(--line); }

/* Hero 视觉 */
.hero-visual { display: grid; place-items: center; }
.globe-card {
  position: relative;
  width: min(430px, 84vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(34, 211, 238, 0.16), rgba(139, 92, 246, 0.08) 45%, transparent 70%);
}
.globe-ring {
  position: absolute;
  inset: 4%;
  border-radius: 50%;
  border: 1px dashed rgba(122, 180, 255, 0.28);
  animation: spinSlow 26s linear infinite;
}
.globe-ring.r2 { inset: 16%; border-style: solid; border-color: rgba(139, 92, 246, 0.28); animation-duration: 20s; animation-direction: reverse; }
.globe-ring.r3 { inset: 29%; border-color: rgba(34, 211, 238, 0.32); animation-duration: 15s; }

.globe-core {
  width: 46%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #a5f3fc;
  background: radial-gradient(circle at 35% 30%, rgba(34, 211, 238, 0.3), rgba(6, 12, 24, 0.9) 72%);
  border: 1px solid rgba(34, 211, 238, 0.4);
  box-shadow: 0 0 70px -10px rgba(34, 211, 238, 0.6), inset 0 0 40px rgba(34, 211, 238, 0.18);
  animation: corePulse 5s ease-in-out infinite;
}
.globe-core svg { width: 58%; height: 58%; }
@keyframes corePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.pin {
  position: absolute;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px 2px rgba(34, 211, 238, 0.9);
}
.pin::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid rgba(34, 211, 238, 0.55);
  animation: pinPulse 2.4s ease-out infinite;
}
@keyframes pinPulse {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(1.9); opacity: 0; }
}
.p1 { top: 20%; left: 26%; }
.p2 { top: 34%; right: 18%; background: var(--violet); box-shadow: 0 0 12px 2px rgba(139, 92, 246, 0.9); animation-delay: .6s; }
.p3 { bottom: 26%; left: 18%; background: var(--green); box-shadow: 0 0 12px 2px rgba(52, 211, 153, .9); animation-delay: 1.2s; }
.p4 { bottom: 18%; right: 30%; background: var(--amber); box-shadow: 0 0 12px 2px rgba(251, 191, 36, .9); animation-delay: 1.8s; }

.float-chip {
  position: absolute;
  padding: 8px 15px;
  font-size: 12.5px;
  font-weight: 600;
  color: #d9f6ff;
  border-radius: 99px;
  border: 1px solid var(--line-strong);
  background: rgba(9, 16, 29, 0.82);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  white-space: nowrap;
  animation: chipFloat 5s ease-in-out infinite;
}
.chip-1 { top: 8%; right: 2%; }
.chip-2 { bottom: 26%; left: -4%; animation-delay: 1.4s; }
.chip-3 { bottom: 6%; right: 4%; animation-delay: 2.6s; }
@keyframes chipFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-11px); }
}

/* 跑马灯 */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 12, 22, 0.6);
  overflow: hidden;
  padding: 15px 0;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  gap: 42px;
  width: max-content;
  animation: marquee 36s linear infinite;
}
.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-mute);
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.marquee-track span::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 6. 通用区块 ---------- */
.section { position: relative; padding: 96px 0; }
.section-alt::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(10, 16, 30, 0.7) 20%, rgba(10, 16, 30, 0.7) 80%, transparent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  z-index: -1;
}

.section-head { max-width: 760px; margin: 0 auto 54px; text-align: center; }
.eyebrow {
  display: inline-block;
  font-family: var(--font-tech);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.34em;
  color: var(--cyan);
  padding: 5px 14px;
  border-radius: 99px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  background: rgba(34, 211, 238, 0.06);
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.section-sub { font-size: 15.5px; color: var(--text-dim); }

/* ---------- 7. 介绍卡片 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 26px;
}
.feature-card {
  position: relative;
  padding: 30px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.015));
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(34, 211, 238, 0.14), transparent 62%);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.feature-card:hover { transform: translateY(-7px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.feature-card:hover::before { opacity: 1; }
.feature-card > * { position: relative; z-index: 1; }

.feature-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 15px;
  margin-bottom: 18px;
  border: 1px solid currentColor;
}
.feature-icon svg { width: 25px; height: 25px; }
.i-cyan { color: var(--cyan); background: rgba(34, 211, 238, 0.1); box-shadow: 0 0 24px -6px rgba(34, 211, 238, 0.7); }
.i-purple { color: var(--violet); background: rgba(139, 92, 246, 0.1); box-shadow: 0 0 24px -6px rgba(139, 92, 246, 0.7); }
.i-green { color: var(--green); background: rgba(52, 211, 153, 0.1); box-shadow: 0 0 24px -6px rgba(52, 211, 153, 0.7); }
.i-amber { color: var(--amber); background: rgba(251, 191, 36, 0.1); box-shadow: 0 0 24px -6px rgba(251, 191, 36, 0.7); }

.feature-card h3 { font-size: 17.5px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14.5px; color: var(--text-dim); line-height: 1.75; }

.why-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--line);
  overflow: hidden;
}
.why-item {
  display: flex;
  gap: 16px;
  padding: 26px 24px;
  background: rgba(8, 12, 22, 0.86);
  transition: background 0.3s ease;
}
.why-item:hover { background: rgba(14, 22, 38, 0.95); }
.why-num {
  font-family: var(--font-tech);
  font-size: 24px;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px var(--cyan);
  line-height: 1.1;
  flex: none;
}
.why-item h4 { font-size: 15.5px; margin-bottom: 5px; }
.why-item p { font-size: 14px; color: var(--text-dim); }

/* ---------- 8. 购买区 ---------- */
.store-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 320px;
  max-width: 440px;
  padding: 0 16px;
  height: 52px;
  border-radius: 99px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.search-box:focus-within { border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.search-box svg { width: 19px; height: 19px; color: var(--text-mute); flex: none; }
.search-box input {
  flex: 1;
  height: 100%;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 15px;
}
.search-box input::placeholder { color: var(--text-mute); }
.search-clear {
  width: 24px; height: 24px;
  border-radius: 50%;
  font-size: 18px;
  line-height: 1;
  color: var(--text-mute);
  background: rgba(255, 255, 255, 0.08);
  flex: none;
}
.search-clear:hover { color: #fff; background: rgba(255, 255, 255, 0.16); }

.store-meta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--text-dim);
}
.live-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulseDot 2s infinite;
}
#regionCount { font-family: var(--font-tech); color: var(--cyan); font-weight: 700; }

.region-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
  gap: 18px;
}

.region-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 22px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(.34,1.4,.64,1), border-color 0.3s ease, box-shadow 0.35s ease;
  animation: cardIn 0.5s ease backwards;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(22px) scale(0.97); }
  to { opacity: 1; transform: none; }
}

.region-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c1), var(--c2));
  opacity: 0.75;
  transition: opacity 0.3s ease, height 0.3s ease;
}
.region-card::after {
  content: "";
  position: absolute;
  width: 180px; height: 180px;
  right: -70px; top: -70px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--c1), transparent 68%);
  opacity: 0.16;
  transition: opacity 0.35s ease, transform 0.5s ease;
}
.region-card:hover {
  transform: translateY(-8px);
  border-color: var(--c1);
  box-shadow: 0 22px 50px -22px var(--c1), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}
.region-card:hover::before { opacity: 1; height: 3px; }
.region-card:hover::after { opacity: 0.3; transform: scale(1.15); }
.region-card > * { position: relative; z-index: 1; }

.rc-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }

.rc-flag {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 14px;
  font-family: var(--font-tech);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: #fff;
  background: linear-gradient(140deg, var(--c1), var(--c2));
  box-shadow: 0 8px 22px -10px var(--c1);
  flex: none;
}

.rc-stock {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  font-size: 11.5px;
  font-weight: 600;
  color: #86efac;
  border-radius: 99px;
  border: 1px solid rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.1);
  white-space: nowrap;
}
.rc-stock i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 7px var(--green);
  display: block;
}

.rc-name { font-size: 17px; font-weight: 700; letter-spacing: 0.01em; }
.rc-desc { font-size: 13px; color: var(--text-mute); margin-top: -8px; }

.rc-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: auto; }
.rc-tag {
  font-family: var(--font-tech);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--text-mute);
}
.buy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 99px;
  font-size: 14px;
  font-weight: 700;
  color: #05121b;
  background: linear-gradient(120deg, #fff, #d8f6ff 55%, #e9d9ff);
  box-shadow: 0 8px 24px -12px rgba(255, 255, 255, 0.7);
  transition: transform 0.25s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.buy-btn svg { width: 15px; height: 15px; transition: transform 0.3s ease; }
.buy-btn:hover {
  transform: translateY(-2px);
  background: linear-gradient(120deg, var(--cyan), #7dd3fc 55%, var(--violet));
  color: #04121a;
  box-shadow: 0 12px 30px -12px var(--c1);
}
.buy-btn:hover svg { transform: translateX(4px); }
.buy-btn:active { transform: scale(0.96); }

.empty-state {
  display: grid;
  place-items: center;
  gap: 14px;
  padding: 64px 20px;
  text-align: center;
  border-radius: var(--radius);
  border: 1px dashed var(--line-strong);
  color: var(--text-mute);
}
.empty-state svg { width: 40px; height: 40px; color: var(--line-strong); }

.store-note {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  padding: 16px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(34, 211, 238, 0.055);
  font-size: 14px;
  color: var(--text-dim);
}
.store-note svg { width: 20px; height: 20px; color: var(--cyan); flex: none; }

/* ---------- 9. 步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}
.step-card {
  position: relative;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.012));
  backdrop-filter: blur(10px);
  transition: transform 0.35s ease, border-color 0.3s ease, box-shadow 0.35s ease;
}
.step-card:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: var(--shadow); }

.step-badge {
  display: inline-block;
  font-family: var(--font-tech);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--violet);
  padding: 4px 11px;
  border-radius: 99px;
  border: 1px solid rgba(139, 92, 246, 0.32);
  background: rgba(139, 92, 246, 0.1);
  margin-bottom: 18px;
}
.step-icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 13px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.09);
  border: 1px solid rgba(34, 211, 238, 0.28);
  margin-bottom: 16px;
}
.step-icon svg { width: 23px; height: 23px; }
.step-card h3 { font-size: 17px; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--text-dim); }
.step-line {
  position: absolute;
  top: 50%; right: -20px;
  width: 20px; height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}
.step-card:last-child .step-line { display: none; }

/* ---------- 10. 评价 ---------- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
}
.review-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.014));
  backdrop-filter: blur(10px);
  transition: transform 0.35s ease, border-color 0.3s ease, box-shadow 0.35s ease;
}
.review-card:hover { transform: translateY(-7px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.stars { color: var(--amber); font-size: 15px; letter-spacing: 3px; }
.review-text { font-size: 14.5px; color: var(--text-dim); }
.review-user { display: flex; align-items: center; gap: 12px; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); }
.avatar {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-weight: 700;
  font-size: 16px;
  color: #05121b;
  flex: none;
}
.a1 { background: linear-gradient(135deg, #22d3ee, #3b82f6); }
.a2 { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.a3 { background: linear-gradient(135deg, #34d399, #22d3ee); }
.a4 { background: linear-gradient(135deg, #fbbf24, #f97316); }
.a5 { background: linear-gradient(135deg, #60a5fa, #8b5cf6); }
.a6 { background: linear-gradient(135deg, #f472b6, #a855f7); }
.review-name { font-size: 15px; font-weight: 600; }
.review-meta { font-size: 12.5px; color: var(--text-mute); }

.review-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin-top: 30px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--line);
  overflow: hidden;
}
.rs-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 24px 14px;
  background: rgba(8, 12, 22, 0.9);
}
.rs-item strong {
  font-family: var(--font-tech);
  font-size: 24px;
  background: linear-gradient(100deg, #fff, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.rs-item span { font-size: 13px; color: var(--text-mute); }

/* ---------- 11. 使用流程 ---------- */
.guide-wrap {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 26px;
  align-items: start;
}
.guide-list { display: flex; flex-direction: column; gap: 14px; }
.guide-item {
  display: flex;
  gap: 18px;
  padding: 22px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.guide-item:hover { transform: translateX(6px); border-color: var(--line-strong); background: rgba(34, 211, 238, 0.06); }
.guide-index {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  flex: none;
  border-radius: 50%;
  font-family: var(--font-tech);
  font-weight: 700;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.35);
  background: rgba(34, 211, 238, 0.08);
}
.guide-item h3 { font-size: 16.5px; margin-bottom: 6px; }
.guide-item p { font-size: 14px; color: var(--text-dim); }

.guide-side { display: flex; flex-direction: column; gap: 18px; position: sticky; top: calc(var(--nav-h) + 18px); }
.tip-card, .cta-card {
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.tip-card {
  background: linear-gradient(165deg, rgba(251, 191, 36, 0.1), rgba(255, 255, 255, 0.02));
  border-color: rgba(251, 191, 36, 0.26);
}
.tip-head { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.tip-head svg { width: 22px; height: 22px; color: var(--amber); flex: none; }
.tip-head h3 { font-size: 16.5px; }
.tip-list { display: flex; flex-direction: column; gap: 11px; }
.tip-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}
.tip-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber);
}
.cta-card {
  background: linear-gradient(160deg, rgba(34, 211, 238, 0.12), rgba(139, 92, 246, 0.1));
  border-color: var(--line-strong);
  text-align: center;
}
.cta-card h3 { font-size: 18px; margin-bottom: 8px; }
.cta-card p { font-size: 14px; color: var(--text-dim); margin-bottom: 20px; }

/* ---------- 12. 底部 CTA ---------- */
.final-cta { padding: 40px 0 100px; }
.final-card {
  position: relative;
  padding: 62px 32px;
  border-radius: var(--radius-lg);
  text-align: center;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(600px circle at 20% 0%, rgba(34, 211, 238, 0.18), transparent 60%),
    radial-gradient(600px circle at 80% 100%, rgba(139, 92, 246, 0.18), transparent 60%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.012));
  backdrop-filter: blur(14px);
}
.final-card h2 { font-size: clamp(24px, 3.4vw, 38px); font-weight: 800; margin-bottom: 14px; }
.final-card p { color: var(--text-dim); font-size: 16px; margin-bottom: 30px; }

/* ---------- 13. 页脚 ---------- */
.footer {
  position: relative;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(6, 10, 20, 0.5), rgba(4, 6, 14, 0.95));
  padding-top: 62px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand p { margin-top: 16px; font-size: 14px; color: var(--text-mute); max-width: 300px; }
.footer-col { display: flex; flex-direction: column; gap: 11px; align-items: flex-start; }
.footer-col h4 { font-size: 15px; margin-bottom: 4px; color: #fff; letter-spacing: 0.04em; }
.footer-col a {
  font-size: 14px;
  color: var(--text-mute);
  transition: color 0.25s ease, transform 0.25s ease;
}
.footer-col a:hover { color: var(--cyan); transform: translateX(4px); }

.footer-contact {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
  font-size: 14px;
  text-align: left;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.footer-contact:hover { border-color: var(--cyan); background: rgba(34, 211, 238, 0.09); }
.fc-label { color: var(--text-mute); font-size: 12.5px; flex: none; }
.fc-value { font-family: var(--font-tech); color: var(--cyan); font-weight: 700; letter-spacing: 0.04em; }

.footer-bottom {
  padding-top: 22px;
  padding-bottom: 26px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 13px;
  color: var(--text-mute);
}
.footer-warn { margin-top: 7px; opacity: 0.75; }

/* ---------- 14. 悬浮客服 ---------- */
.fab {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 800;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  border-radius: 99px;
  font-size: 15px;
  font-weight: 700;
  color: #04121a;
  background: linear-gradient(120deg, var(--cyan), var(--violet));
  box-shadow: 0 14px 34px -12px rgba(34, 211, 238, 0.85);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.fab svg { width: 20px; height: 20px; }
.fab:hover { transform: translateY(-3px) scale(1.04); box-shadow: 0 20px 44px -12px rgba(34, 211, 238, 1); }
.fab::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 99px;
  border: 1px solid rgba(34, 211, 238, 0.6);
  animation: fabPulse 2.6s ease-out infinite;
}
@keyframes fabPulse {
  0% { transform: scale(1); opacity: 0.9; }
  100% { transform: scale(1.28); opacity: 0; }
}

/* ---------- 15. 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 20px;
}
.modal[hidden] { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 4, 10, 0.78);
  backdrop-filter: blur(7px);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.modal.show .modal-backdrop { opacity: 1; }

.modal-panel {
  position: relative;
  width: min(520px, 100%);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  padding: 34px 30px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(520px circle at 50% -10%, rgba(34, 211, 238, 0.16), transparent 62%),
    linear-gradient(165deg, rgba(16, 23, 40, 0.98), rgba(7, 11, 22, 0.99));
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  opacity: 0;
  transform: translateY(26px) scale(0.96);
  transition: opacity 0.32s ease, transform 0.38s cubic-bezier(.34,1.4,.64,1);
}
.modal.show .modal-panel { opacity: 1; transform: none; }

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  color: var(--text-mute);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}
.modal-close svg { width: 18px; height: 18px; }
.modal-close:hover { color: #fff; background: rgba(236, 72, 153, 0.18); border-color: rgba(236, 72, 153, 0.45); transform: rotate(90deg); }

.modal-head { text-align: center; margin-bottom: 22px; }
.modal-icon {
  width: 60px; height: 60px;
  margin: 0 auto 16px;
  display: grid; place-items: center;
  border-radius: 20px;
  color: #04121a;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 34px -6px rgba(34, 211, 238, 0.8);
}
.modal-icon svg { width: 30px; height: 30px; }
.modal-head h3 { font-size: 21px; font-weight: 800; margin-bottom: 8px; }
.modal-sub { font-size: 14px; color: var(--text-dim); }

.region-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 18px;
  margin-bottom: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.08);
}
.chip-label { font-size: 13px; color: var(--text-dim); }
.chip-value { font-size: 15.5px; font-weight: 700; color: #b8f0ff; }

.wechat-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 18px; }
.wechat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.25s ease, background 0.25s ease;
}
.wechat-item:hover { border-color: var(--cyan); background: rgba(34, 211, 238, 0.07); }
.wechat-left { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.wechat-tag { font-size: 12.5px; color: var(--text-mute); }
.wechat-id {
  font-family: var(--font-tech);
  font-size: clamp(17px, 4.6vw, 21px);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  word-break: break-all;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 99px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.35);
  background: rgba(34, 211, 238, 0.09);
  flex: none;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.copy-btn svg { width: 15px; height: 15px; }
.copy-btn:hover { background: var(--cyan); color: #04121a; transform: translateY(-2px); }
.copy-btn.done { background: var(--green); border-color: var(--green); color: #04121a; }

.modal-actions { display: flex; flex-direction: column; gap: 11px; }
.modal-foot {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.6;
}
.modal-foot svg { width: 16px; height: 16px; flex: none; color: var(--cyan); margin-top: 2px; }

/* ---------- 16. Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  z-index: 1200;
  padding: 13px 24px;
  border-radius: 99px;
  font-size: 14.5px;
  font-weight: 600;
  color: #04121a;
  background: linear-gradient(120deg, var(--cyan), #7dd3fc);
  box-shadow: 0 18px 40px -16px rgba(34, 211, 238, 0.9);
  transform: translate(-50%, 130%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(.34,1.4,.64,1), opacity 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
  max-width: calc(100vw - 40px);
  overflow: hidden;
  text-overflow: ellipsis;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }

/* ---------- 17. 滚动入场 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.75s ease, transform 0.75s cubic-bezier(.2,.8,.3,1);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 46px; }
  .hero-visual { order: -1; }
  .globe-card { width: min(360px, 76vw); }
  .hero-desc { max-width: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 34px; }
  .guide-wrap { grid-template-columns: 1fr; }
  .guide-side { position: static; }
  .step-line { display: none; }
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 0; right: 0;
    z-index: 890;
    height: 100vh;
    width: min(300px, 82vw);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 6px;
    padding: calc(var(--nav-h) + 22px) 20px 30px;
    background: linear-gradient(180deg, rgba(8, 13, 25, 0.99), rgba(4, 7, 15, 0.99));
    border-left: 1px solid var(--line);
    box-shadow: -30px 0 70px -30px rgba(0, 0, 0, 0.9);
    transform: translateX(105%);
    transition: transform 0.4s cubic-bezier(.3,.9,.3,1);
    overflow-y: auto;
  }
  .nav-links.open { transform: none; }
  .nav-link { padding: 14px 18px; font-size: 16px; border-radius: 12px; border: 1px solid transparent; }
  .nav-link.active { border-color: var(--line-strong); background: rgba(34, 211, 238, 0.09); }
  .nav-link::after { display: none; }
  .burger {
    display: flex;
    position: relative;
    z-index: 895;
  }
  .nav-cta { display: none; }
}

@media (max-width: 760px) {
  :root { --nav-h: 64px; }
  .container { padding: 0 18px; }
  .section { padding: 68px 0; }
  .hero { padding-top: calc(var(--nav-h) + 40px); }
  .hero-inner { padding-bottom: 52px; }
  .hero-actions { gap: 11px; }
  .hero-actions .btn { flex: 1 1 200px; }
  .hero-stats { gap: 16px; row-gap: 18px; }
  .stat-line { display: none; }
  .stat { min-width: 42%; }
  .float-chip { font-size: 11.5px; padding: 6px 12px; }
  .chip-2 { left: 0; }
  .section-head { margin-bottom: 40px; }
  .region-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
  .region-card { padding: 19px 17px; gap: 14px; }
  .rc-flag { width: 42px; height: 42px; font-size: 14px; }
  .review-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .footer-brand p { max-width: none; }
  .final-card { padding: 46px 22px; }
  .modal-panel { padding: 30px 20px 24px; }
  .fab { right: 16px; bottom: 16px; padding: 12px 17px; }
  .fab-text { display: none; }
}

@media (max-width: 480px) {
  .hero-title { font-size: clamp(28px, 8.4vw, 38px); }
  .hero-desc { font-size: 15px; }
  .region-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .store-toolbar { flex-direction: column; align-items: stretch; }
  .search-box { max-width: none; }
  .store-meta { justify-content: center; }
  .wechat-item { flex-direction: column; align-items: stretch; gap: 10px; }
  .copy-btn { justify-content: center; }
  .footer-bottom { font-size: 12px; }
}

/* ---------- 19. 无障碍与降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .nav, .fab, .bg-fx, .marquee, .modal { display: none !important; }
}

/* ==========================================================================
   20. 地区详情页
   ========================================================================== */

/* 面包屑 */
.crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 13.5px;
  color: var(--text-mute);
}
.crumbs a { color: var(--text-dim); transition: color 0.25s ease; }
.crumbs a:hover { color: var(--cyan); }
.crumbs em { font-style: normal; color: var(--cyan); }

/* 地区 Hero */
.rhero {
  position: relative;
  padding: calc(var(--nav-h) + 52px) 0 0;
  overflow: hidden;
}
.rhero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 44px;
  align-items: start;
  padding-bottom: 64px;
}
.rhero-title {
  font-size: clamp(28px, 4.2vw, 48px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.rhero-desc {
  font-size: 15.5px;
  color: var(--text-dim);
  max-width: 640px;
  margin-bottom: 26px;
}
.rbadges { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 30px; }
.rbadge {
  padding: 6px 14px;
  font-size: 13px;
  color: #b8f0ff;
  border-radius: 99px;
  border: 1px solid var(--line-strong);
  background: rgba(34, 211, 238, 0.07);
}

/* 参数卡片 */
.spec-card {
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(420px circle at 80% -10%, rgba(34, 211, 238, 0.16), transparent 60%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}
.spec-head { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.spec-name { font-size: 18px; font-weight: 700; }
.spec-sub { font-size: 12.5px; color: var(--text-mute); }
.spec-list { display: flex; flex-direction: column; gap: 1px; margin-bottom: 22px; background: var(--line); border-radius: var(--radius-sm); overflow: hidden; }
.spec-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  background: rgba(8, 12, 22, 0.9);
  font-size: 13.5px;
}
.spec-row dt { color: var(--text-mute); flex: none; }
.spec-row dd { color: var(--text); text-align: right; word-break: break-word; }

/* 文章型内容 */
.article {
  max-width: 920px;
  margin: 0 auto 46px;
  padding: 34px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.032);
  backdrop-filter: blur(10px);
}
.article h3 {
  position: relative;
  font-size: 18px;
  font-weight: 700;
  margin: 26px 0 12px;
  padding-left: 16px;
}
.article h3:first-child { margin-top: 0; }
.article h3::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 4px; height: 17px;
  transform: translateY(-50%);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
}
.article p { font-size: 15.5px; color: var(--text-dim); line-height: 1.95; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: 14.5px;
}
.data-table th,
.data-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.data-table th {
  width: 34%;
  font-weight: 600;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
}
.data-table td { color: var(--text); background: rgba(255, 255, 255, 0.015); }
.data-table tr:last-child th,
.data-table tr:last-child td { border-bottom: none; }

/* 购买面板 */
.buy-panel {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(560px circle at 0% 0%, rgba(34, 211, 238, 0.14), transparent 62%),
    radial-gradient(560px circle at 100% 100%, rgba(139, 92, 246, 0.16), transparent 62%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.012));
  backdrop-filter: blur(14px);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.bp-left { padding: 34px 32px; border-right: 1px solid var(--line); }
.bp-left .rc-top { margin-bottom: 18px; }
.bp-title { font-size: clamp(20px, 2.6vw, 27px); font-weight: 800; margin-bottom: 12px; }
.bp-desc { font-size: 15px; color: var(--text-dim); margin-bottom: 20px; }
.bp-list { display: flex; flex-direction: column; gap: 10px; }
.bp-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  color: var(--text-dim);
}
.bp-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 7px; height: 7px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.7);
}
.bp-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 34px 28px;
  text-align: center;
  background: rgba(6, 10, 20, 0.4);
}
.bp-hint { font-size: 13.5px; color: var(--text-mute); letter-spacing: 0.04em; }
.bp-note {
  font-family: var(--font-tech);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--cyan);
  line-height: 1.8;
}
.bp-note.dim {
  font-family: var(--font);
  font-weight: 400;
  font-size: 12.5px;
  letter-spacing: 0;
  color: var(--text-mute);
  line-height: 1.6;
}

/* 地区选择器（内链） */
.region-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  justify-content: center;
}
.picker-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 17px;
  border-radius: 99px;
  font-size: 14px;
  color: var(--text-dim);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
  transition: transform 0.25s ease, color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.picker-chip b {
  font-family: var(--font-tech);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}
.picker-chip:hover {
  transform: translateY(-3px);
  color: #fff;
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  box-shadow: var(--glow-cyan);
}
.picker-all { color: #fff; border-color: var(--line-strong); background: rgba(139, 92, 246, 0.12); }
.picker-all b { color: #c4b5fd; }

/* FAQ */
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 13px; }
.faq-item {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.faq-item[open] { border-color: var(--line-strong); background: rgba(34, 211, 238, 0.055); }
.faq-q {
  position: relative;
  padding: 19px 56px 19px 22px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color 0.25s ease;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after {
  content: "";
  position: absolute;
  right: 22px; top: 50%;
  width: 11px; height: 11px;
  margin-top: -6px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.3s ease;
}
.faq-item[open] .faq-q::after { transform: rotate(-135deg); margin-top: -2px; }
.faq-q:hover { color: var(--cyan); }
.faq-a { padding: 0 22px 20px; }
.faq-a p {
  font-size: 14.5px;
  color: var(--text-dim);
  line-height: 1.9;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

/* 页脚地区链接 */
.footer-regions { min-width: 0; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  max-height: 200px;
  overflow-y: auto;
  padding-right: 6px;
}
.footer-links a { font-size: 13px; color: var(--text-mute); transition: color 0.25s ease; }
.footer-links a:hover { color: var(--cyan); }
.footer-links a[aria-current="page"] { color: var(--cyan); font-weight: 600; }

/* 首页卡片：详情链接 */
.rc-name { display: inline-block; transition: color 0.25s ease; }
.rc-name:hover { color: var(--cyan); }
.rc-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.02em;
  transition: gap 0.25s ease, color 0.25s ease;
}
.rc-link svg { width: 14px; height: 14px; }
.rc-link:hover { gap: 9px; color: #b8f0ff; }

/* 地区页响应式 */
@media (max-width: 1080px) {
  .rhero-grid { grid-template-columns: 1fr; gap: 34px; }
  .spec-card { max-width: 520px; }
  .buy-panel { grid-template-columns: 1fr; }
  .bp-left { border-right: none; border-bottom: 1px solid var(--line); }
}

@media (max-width: 760px) {
  .rhero { padding-top: calc(var(--nav-h) + 30px); }
  .rhero-grid { padding-bottom: 46px; }
  .crumbs { font-size: 12.5px; margin-bottom: 20px; }
  .article { padding: 24px 20px; }
  .article h3 { font-size: 16.5px; }
  .article p { font-size: 15px; line-height: 1.85; }
  .data-table th,
  .data-table td { padding: 10px 12px; font-size: 13.5px; }
  .data-table th { width: 40%; }
  .bp-left,
  .bp-right { padding: 24px 20px; }
  .bp-note { font-size: 14px; }
  .faq-q { font-size: 15px; padding: 16px 50px 16px 18px; }
  .faq-a { padding: 0 18px 18px; }
  .picker-chip { font-size: 13px; padding: 9px 14px; }
}

@media (max-width: 480px) {
  .rhero-title { font-size: clamp(24px, 7.4vw, 32px); }
  .picker-chip { width: 100%; justify-content: center; }
  .spec-row { flex-direction: column; align-items: flex-start; gap: 3px; }
  .spec-row dd { text-align: left; }
}