/* 极速加速器 · 官网视觉（不用外网字体 CDN，避免国内加载挂起导致样式体感失效） */
:root {
  --bg0: #061018;
  --bg1: #0b1c28;
  --ink: #e8f4f8;
  --muted: #8aa4b3;
  --line: rgba(120, 190, 210, 0.18);
  --accent: #2ee6a8;
  --accent2: #38c4ff;
  --warn: #ffb454;
  --err: #ff6b7a;
  --ok: #2ee6a8;
  --card: rgba(12, 28, 40, 0.72);
  --glow: rgba(46, 230, 168, 0.35);
  --font-display: "PingFang SC", "Noto Sans SC", "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "Noto Sans SC", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 12% -10%, rgba(56, 196, 255, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 10%, rgba(46, 230, 168, 0.14), transparent 50%),
    linear-gradient(165deg, var(--bg0), var(--bg1) 48%, #07141d);
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
img { max-width: 100%; display: block; }

.site-nav {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 14px clamp(16px, 4vw, 40px);
  backdrop-filter: blur(14px);
  background: rgba(6, 16, 24, 0.72);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 800; letter-spacing: -0.03em; font-size: 1.15rem;
}
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  box-shadow: 0 0 24px var(--glow);
  display: grid; place-items: center;
  color: #041018; font-size: 13px; font-weight: 800;
}
.nav-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 480px) {
  .site-nav { align-items: flex-start; flex-direction: column; }
  .nav-actions { width: 100%; }
  .nav-actions .btn { flex: 1; min-width: 0; padding: 10px 12px; font-size: 14px; }
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: 999px; padding: 11px 18px;
  font-weight: 600; cursor: pointer; transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:active { transform: translateY(1px) scale(0.98); }
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  color: #041018;
  box-shadow: 0 10px 28px rgba(46, 230, 168, 0.25);
}
.btn-primary:hover { box-shadow: 0 14px 34px rgba(56, 196, 255, 0.32); }
.btn-ghost {
  background: transparent; color: var(--ink);
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: rgba(46, 230, 168, 0.45); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: grid;
  align-items: end;
  padding: clamp(40px, 8vh, 96px) clamp(16px, 4vw, 40px) clamp(36px, 6vh, 72px);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, transparent 0%, rgba(56,196,255,0.07) 48%, transparent 100%),
    repeating-linear-gradient(
      105deg,
      transparent 0 18px,
      rgba(46, 230, 168, 0.035) 18px 19px
    );
  animation: sweep 10s linear infinite;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute; right: -8%; top: 8%;
  width: min(58vw, 620px); height: min(58vw, 620px);
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(56,196,255,0.35), transparent 62%);
  filter: blur(8px);
  animation: pulse 6s ease-in-out infinite;
  pointer-events: none;
}
@keyframes sweep {
  from { transform: translateX(-8%); }
  to { transform: translateX(8%); }
}
@keyframes pulse {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.06); }
}
.hero-inner { position: relative; z-index: 1; max-width: 760px; }
.hero .brand-hero {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.95;
  margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  max-width: 18ch;
}
.hero p {
  color: var(--muted);
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  max-width: 36ch;
  margin-bottom: 28px;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

.split {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
}
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; }
  .split-visual { min-height: 28vh; }
}
.split-visual {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(700px 400px at 30% 20%, rgba(56,196,255,0.28), transparent 60%),
    radial-gradient(500px 360px at 70% 70%, rgba(46,230,168,0.22), transparent 55%),
    linear-gradient(160deg, #07151f, #0a2433);
  padding: clamp(28px, 5vw, 56px);
  display: flex; flex-direction: column; justify-content: flex-end;
}
.split-visual .tag {
  font-size: 13px; color: var(--muted); margin-bottom: 10px;
}
.split-visual .big {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  max-width: 10ch;
}
.split-visual .lane {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    118deg,
    transparent 0 26px,
    rgba(255,255,255,0.03) 26px 27px
  );
  animation: sweep 14s linear infinite;
  pointer-events: none;
}
.split-panel {
  display: flex; align-items: center; justify-content: center;
  padding: clamp(24px, 5vw, 48px) 20px;
}
.auth-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px 24px 24px;
  backdrop-filter: blur(12px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.35);
}
.auth-card h1 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  letter-spacing: -0.03em;
  margin: 8px 0 6px;
}
.auth-card .sub { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(4, 16, 24, 0.65);
  color: var(--ink);
  outline: none;
}
input:focus { border-color: rgba(46, 230, 168, 0.55); box-shadow: 0 0 0 3px rgba(46, 230, 168, 0.12); }
.row { display: flex; gap: 8px; }
.row input { flex: 1; }
.auth-card .btn-primary { width: 100%; margin-top: 18px; border-radius: 12px; padding: 13px; }
.auth-links {
  display: flex; justify-content: space-between; gap: 10px;
  margin-top: 14px; font-size: 13px; color: var(--muted);
}
.auth-links a { color: var(--accent2); }
.msg { min-height: 1.25em; margin-top: 12px; font-size: 13px; }
.msg.err { color: var(--err); }
.msg.ok { color: var(--ok); }

.account-wrap {
  width: min(980px, 100%);
  margin: 0 auto;
  padding: 28px clamp(16px, 4vw, 28px) 64px;
}
.account-head {
  display: flex; justify-content: space-between; gap: 16px; align-items: flex-start;
  flex-wrap: wrap; margin-bottom: 22px;
}
.account-head h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2rem);
  letter-spacing: -0.03em;
}
.meta { color: var(--muted); font-size: 14px; margin-top: 4px; }
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.panel {
  grid-column: span 6;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 16px;
}
.panel.wide { grid-column: span 12; }
@media (max-width: 760px) {
  .panel, .panel.wide { grid-column: span 12; }
}
.panel h2 {
  font-size: 15px; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 12px;
}
.stat {
  font-family: var(--font-display);
  font-size: 1.55rem; font-weight: 800; letter-spacing: -0.02em;
}
.stat small { display: block; font-family: var(--font-body); font-size: 13px; font-weight: 500; color: var(--muted); margin-top: 4px; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
.plan {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  background: rgba(4,16,24,0.45);
  cursor: pointer;
  transition: border-color .15s ease, transform .15s ease;
}
.plan:hover { border-color: rgba(46,230,168,0.45); transform: translateY(-1px); }
.plan.active { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(46,230,168,0.35); }
.plan .name { font-weight: 700; margin-bottom: 6px; }
.plan .price { font-family: var(--font-display); font-size: 1.4rem; font-weight: 800; }
.plan .price span { font-size: 13px; color: var(--muted); font-family: var(--font-body); font-weight: 500; }
.plan .tip { margin-top: 8px; font-size: 12px; color: var(--muted); }
.channels { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.chip {
  border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 12px; font-size: 13px; cursor: pointer; background: transparent; color: var(--ink);
}
.chip.active { border-color: var(--accent); background: rgba(46,230,168,0.12); }
.invite-box {
  display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 8px;
}
.invite-box input { flex: 1; min-width: 180px; }
.foot-note { margin-top: 18px; color: var(--muted); font-size: 12px; }