/* =========================================================
   Aegis VPN · 设计系统
   配色：深邃近黑底 + 霓虹青绿主色 + 电光青辅色
   字体：Syne(标题) / Manrope(正文)
   ========================================================= */
:root {
  --bg: #060a0f;
  --bg-2: #0a1018;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(46, 230, 166, 0.35);

  --text: #eaf1f4;
  --text-dim: #93a3b3;
  --text-faint: #5d6b79;

  --accent: #2ee6a6;
  --accent-2: #4fd6ff;
  --accent-deep: #12c98a;
  --accent-soft: rgba(46, 230, 166, 0.12);

  --grad: linear-gradient(110deg, #2ee6a6 0%, #4fd6ff 100%);
  --grad-text: linear-gradient(110deg, #5cffc6 0%, #62dcff 100%);

  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --shadow-glow: 0 0 40px rgba(46, 230, 166, 0.25);
  --shadow-card: 0 24px 60px rgba(0, 0, 0, 0.45);

  --maxw: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
}

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

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; letter-spacing: -0.02em; }

/* ============ 背景氛围 ============ */
.bg-atmosphere { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.bg-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 35%, transparent 80%);
}
.bg-glow { position: absolute; border-radius: 50%; filter: blur(120px); opacity: 0.55; }
.bg-glow--1 { width: 620px; height: 620px; top: -260px; left: -120px;
  background: radial-gradient(circle, rgba(46,230,166,0.45), transparent 70%); }
.bg-glow--2 { width: 560px; height: 560px; top: 280px; right: -180px;
  background: radial-gradient(circle, rgba(79,214,255,0.32), transparent 70%); }
.bg-noise {
  position: absolute; inset: 0; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============ 容器 / 通用 ============ */
.section { max-width: var(--maxw); margin: 0 auto; padding: 100px 24px; }
.section__head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section__title { font-size: clamp(1.9rem, 4vw, 3rem); }
.section__lead { margin-top: 16px; color: var(--text-dim); font-size: 1.08rem; }
.eyebrow {
  display: inline-block; margin-bottom: 16px;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent);
}
.grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-pill);
  font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
  cursor: pointer; border: 1px solid transparent;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s, border-color 0.3s;
  white-space: nowrap;
}
.btn--lg { padding: 15px 30px; font-size: 1.02rem; }
.btn--block { width: 100%; justify-content: center; }
.btn--primary { background: var(--grad); color: #042018; box-shadow: 0 8px 24px rgba(46,230,166,0.28); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(46,230,166,0.42); }
.btn--ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn--ghost:hover { background: var(--surface-2); border-color: var(--border-strong); transform: translateY(-2px); }

/* ============ 导航 ============ */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s; border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(6,10,15,0.78); backdrop-filter: blur(18px); border-bottom-color: var(--border); }
.nav__inner { max-width: var(--maxw); margin: 0 auto; padding: 16px 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; }
.brand__mark { color: var(--accent); display: inline-flex; }
.brand__mark svg { width: 28px; height: 28px; filter: drop-shadow(0 0 8px rgba(46,230,166,0.5)); }
.brand__dot { color: var(--accent); }

.nav__links { display: flex; gap: 30px; }
.nav__links a { color: var(--text-dim); font-weight: 500; font-size: 0.95rem; position: relative; transition: color 0.25s; }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--grad); border-radius: 2px; transition: width 0.3s var(--ease); }
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { width: 100%; }

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

.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: 170px 24px 90px;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
}
.badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px; border-radius: var(--radius-pill);
  background: var(--accent-soft); border: 1px solid var(--border-strong);
  color: var(--accent); font-size: 0.84rem; font-weight: 600;
}
.badge__pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 rgba(46,230,166,0.6); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(46,230,166,0.55); } 70% { box-shadow: 0 0 0 10px rgba(46,230,166,0); } 100% { box-shadow: 0 0 0 0 rgba(46,230,166,0); } }

.hero__title { margin: 22px 0 20px; font-size: clamp(2.4rem, 5.4vw, 4rem); font-weight: 800; }
.hero__sub { color: var(--text-dim); font-size: 1.12rem; max-width: 540px; }
.hero__cta { display: flex; gap: 14px; margin: 34px 0 26px; flex-wrap: wrap; }
.hero__trust { display: flex; gap: 22px; flex-wrap: wrap; }
.hero__trust li { display: flex; align-items: center; gap: 8px; color: var(--text-dim); font-size: 0.9rem; }
.hero__trust svg { color: var(--accent); }

/* Hero 可视化 */
.hero__visual { position: relative; display: flex; align-items: center; justify-content: center; min-height: 420px; }
.orb { position: relative; width: 320px; height: 320px; display: flex; align-items: center; justify-content: center; }
.orb__ring { position: absolute; border-radius: 50%; border: 1px solid rgba(46,230,166,0.22); }
.orb__ring--1 { inset: 0; animation: spin 18s linear infinite; border-top-color: var(--accent); }
.orb__ring--2 { inset: 36px; animation: spin 13s linear infinite reverse; border-left-color: var(--accent-2); }
.orb__ring--3 { inset: 74px; animation: spin 9s linear infinite; border-bottom-color: rgba(79,214,255,0.6); }
@keyframes spin { to { transform: rotate(360deg); } }
.orb__core {
  width: 130px; height: 130px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(46,230,166,0.35), rgba(6,10,15,0.9));
  border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); box-shadow: var(--shadow-glow), inset 0 0 30px rgba(46,230,166,0.18);
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.orb__node { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.orb__node--a { top: 4%; left: 50%; animation: float 5s ease-in-out infinite; }
.orb__node--b { top: 50%; right: 2%; background: var(--accent-2); box-shadow: 0 0 12px var(--accent-2); animation: float 7s ease-in-out infinite 0.5s; }
.orb__node--c { bottom: 6%; left: 22%; animation: float 6s ease-in-out infinite 1s; }
.orb__node--d { top: 30%; left: 0%; background: var(--accent-2); box-shadow: 0 0 12px var(--accent-2); animation: float 5.5s ease-in-out infinite 0.8s; }

.status-card {
  position: absolute; bottom: 6px; left: 50%; transform: translateX(-50%);
  width: 280px; padding: 16px 18px; border-radius: var(--radius);
  background: rgba(10,16,24,0.82); backdrop-filter: blur(16px);
  border: 1px solid var(--border); box-shadow: var(--shadow-card);
  animation: float 7s ease-in-out infinite 0.3s;
}
.status-card__row { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 0.95rem; }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: pulse 2s infinite; }
.status-card__meta { display: flex; gap: 14px; margin-top: 10px; color: var(--text-faint); font-size: 0.8rem; flex-wrap: wrap; }

/* ============ 统计 ============ */
.stats { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.stats__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  padding: 36px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(10px);
}
.stat { text-align: center; }
.stat__num { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.8rem, 4vw, 2.8rem); background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat__suffix { font-family: var(--font-display); font-weight: 800; font-size: 1.3rem; color: var(--accent); }
.stat p { color: var(--text-dim); font-size: 0.92rem; margin-top: 4px; }

/* ============ 功能卡片 ============ */
.features__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  padding: 30px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border);
  transition: transform 0.4s var(--ease), border-color 0.4s, background 0.4s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(46,230,166,0.1), transparent 60%);
  opacity: 0; transition: opacity 0.4s;
}
.card:hover { transform: translateY(-6px); border-color: var(--border-strong); background: var(--surface-2); }
.card:hover::before { opacity: 1; }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); border: 1px solid var(--border-strong); color: var(--accent);
}
.card__icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: 0.96rem; }

/* ============ 全球网络 ============ */
.network__inner { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.network__text .section__title { text-align: left; }
.network__text .btn { margin-top: 28px; }
.network__list { display: flex; flex-direction: column; gap: 12px; }
.server {
  display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 16px;
  padding: 14px 18px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.server:hover { transform: translateX(6px); border-color: var(--border-strong); }
.server__flag { font-family: var(--font-display); font-weight: 800; font-size: 0.78rem; letter-spacing: 0.05em; color: var(--accent); width: 32px; }
.server__name { font-weight: 600; font-size: 0.96rem; }
.server__bar { width: 90px; height: 5px; border-radius: 3px; background: rgba(255,255,255,0.08); overflow: hidden; }
.server__bar i { display: block; height: 100%; border-radius: 3px; background: var(--grad); width: calc(100% - var(--p) * 1.6%); }
.server__ping { color: var(--text-dim); font-size: 0.85rem; font-variant-numeric: tabular-nums; min-width: 42px; text-align: right; }

/* ============ 工作原理 ============ */
.how__grid { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 16px; }
.step { text-align: center; padding: 20px; }
.step__num { font-family: var(--font-display); font-weight: 800; font-size: 2.4rem; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; display: block; margin-bottom: 12px; }
.step h3 { font-size: 1.2rem; margin-bottom: 8px; }
.step p { color: var(--text-dim); font-size: 0.95rem; }
.step__line { width: 100%; min-width: 40px; height: 1px; background: linear-gradient(90deg, transparent, var(--border-strong), transparent); position: relative; }
.step__line::after { content: ""; position: absolute; top: -3px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: travel 3s linear infinite; }
@keyframes travel { from { left: 0; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } to { left: 100%; opacity: 0; } }

/* ============ 定价 ============ */
.toggle { display: inline-flex; gap: 4px; margin-top: 26px; padding: 5px; border-radius: var(--radius-pill); background: var(--surface); border: 1px solid var(--border); }
.toggle__btn { padding: 9px 20px; border-radius: var(--radius-pill); border: 0; background: none; color: var(--text-dim); font-family: var(--font-body); font-weight: 600; font-size: 0.92rem; cursor: pointer; transition: color 0.3s, background 0.3s; display: inline-flex; align-items: center; gap: 8px; }
.toggle__btn.is-active { background: var(--grad); color: #042018; }
.toggle__save { font-size: 0.72rem; padding: 2px 8px; border-radius: var(--radius-pill); background: rgba(4,32,24,0.25); }
.toggle__btn:not(.is-active) .toggle__save { background: var(--accent-soft); color: var(--accent); }

.pricing__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.plan {
  position: relative; padding: 34px 30px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: transform 0.4s var(--ease), border-color 0.4s;
}
.plan:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.plan--featured { background: linear-gradient(180deg, rgba(46,230,166,0.08), var(--surface)); border-color: var(--border-strong); box-shadow: 0 24px 60px rgba(46,230,166,0.12); }
.plan__tag { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); padding: 5px 16px; border-radius: var(--radius-pill); background: var(--grad); color: #042018; font-size: 0.78rem; font-weight: 700; white-space: nowrap; }
.plan__name { font-size: 1.4rem; }
.plan__desc { color: var(--text-dim); font-size: 0.92rem; margin: 6px 0 22px; }
.plan__price { display: flex; align-items: baseline; gap: 2px; margin-bottom: 24px; }
.plan__cur { font-family: var(--font-display); font-weight: 700; font-size: 1.4rem; color: var(--text-dim); }
.plan__amount { font-family: var(--font-display); font-weight: 800; font-size: 3rem; transition: opacity 0.2s; }
.plan__per { color: var(--text-faint); font-size: 0.95rem; }
.plan__feats { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; flex: 1; }
.plan__feats li { display: flex; align-items: flex-start; gap: 10px; color: var(--text-dim); font-size: 0.94rem; }
.plan__feats li::before { content: ""; flex: 0 0 18px; height: 18px; margin-top: 2px; border-radius: 50%; background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M20 6 9 17l-5-5' stroke='%232ee6a6' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 12px no-repeat; }
.pricing__note { text-align: center; margin-top: 32px; color: var(--text-dim); font-size: 0.95rem; }
.pricing__note strong { color: var(--text); }

/* ============ 平台 ============ */
.platforms__inner { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.platforms__text .section__title { text-align: left; }
.platforms__icons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.plat {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 26px 14px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); color: var(--text-dim);
  transition: transform 0.3s var(--ease), border-color 0.3s, color 0.3s, background 0.3s;
}
.plat:hover { transform: translateY(-5px); border-color: var(--border-strong); color: var(--accent); background: var(--surface-2); }
.plat svg { width: 34px; height: 34px; }
.plat span { font-size: 0.85rem; font-weight: 600; }

/* ============ FAQ ============ */
.faq__list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq__item { border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); overflow: hidden; transition: border-color 0.3s, background 0.3s; }
.faq__item[open] { border-color: var(--border-strong); background: var(--surface-2); }
.faq__item summary { list-style: none; cursor: pointer; padding: 20px 22px; font-weight: 600; font-size: 1.04rem; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__icon { position: relative; flex: 0 0 18px; height: 18px; }
.faq__icon::before, .faq__icon::after { content: ""; position: absolute; background: var(--accent); border-radius: 2px; transition: transform 0.3s var(--ease); }
.faq__icon::before { top: 8px; left: 0; width: 18px; height: 2px; }
.faq__icon::after { top: 0; left: 8px; width: 2px; height: 18px; }
.faq__item[open] .faq__icon::after { transform: rotate(90deg); opacity: 0; }
.faq__item p { padding: 0 22px 22px; color: var(--text-dim); font-size: 0.96rem; }

/* ============ CTA ============ */
.cta { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px 110px; }
.cta__card {
  position: relative; overflow: hidden; text-align: center;
  padding: 70px 32px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(46,230,166,0.14), rgba(79,214,255,0.08));
  border: 1px solid var(--border-strong);
}
.cta__card::before { content: ""; position: absolute; width: 480px; height: 480px; border-radius: 50%; background: radial-gradient(circle, rgba(46,230,166,0.3), transparent 70%); top: -240px; left: 50%; transform: translateX(-50%); filter: blur(40px); }
.cta__card h2 { position: relative; font-size: clamp(1.8rem, 4vw, 2.8rem); }
.cta__card p { position: relative; color: var(--text-dim); margin: 16px auto 32px; max-width: 520px; font-size: 1.06rem; }
.cta__card .btn { position: relative; }

/* ============ 页脚 ============ */
.footer { border-top: 1px solid var(--border); background: var(--bg-2); }
.footer__inner { max-width: var(--maxw); margin: 0 auto; padding: 64px 24px 40px; display: grid; grid-template-columns: 1.4fr 2fr; gap: 56px; }
.footer__brand p { color: var(--text-dim); margin-top: 16px; max-width: 320px; font-size: 0.95rem; }
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer__col h4 { font-family: var(--font-body); font-size: 0.82rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 16px; }
.footer__col a { display: block; color: var(--text-dim); font-size: 0.94rem; padding: 6px 0; transition: color 0.25s, transform 0.25s; }
.footer__col a:hover { color: var(--accent); transform: translateX(3px); }
.footer__bottom { max-width: var(--maxw); margin: 0 auto; padding: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--text-faint); font-size: 0.88rem; }

/* ============ 滚动揭示动画 ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.features__grid .card:nth-child(2) { transition-delay: 0.08s; }
.features__grid .card:nth-child(3) { transition-delay: 0.16s; }
.features__grid .card:nth-child(5) { transition-delay: 0.08s; }
.features__grid .card:nth-child(6) { transition-delay: 0.16s; }

/* ============ 登录 / 注册 弹窗 ============ */
.auth {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.3s var(--ease), visibility 0.3s;
}
.auth.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.auth__overlay { position: absolute; inset: 0; background: rgba(3,6,10,0.72); backdrop-filter: blur(8px); }
.auth__dialog {
  position: relative; width: min(94vw, 432px);
  padding: 34px 32px 28px; border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(14,20,28,0.96), rgba(8,12,18,0.96));
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-card), 0 0 60px rgba(46,230,166,0.12);
  transform: translateY(18px) scale(0.97); opacity: 0;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
  max-height: 92vh; overflow-y: auto;
}
.auth.is-open .auth__dialog { transform: none; opacity: 1; }
.auth__x {
  position: absolute; top: 14px; right: 14px; width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; border: 1px solid var(--border); background: var(--surface);
  color: var(--text-dim); cursor: pointer; transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.auth__x:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }

.auth__brand { text-align: center; margin-bottom: 22px; }
.auth__brand .brand__mark { color: var(--accent); display: inline-flex; }
.auth__brand .brand__mark svg { width: 40px; height: 40px; filter: drop-shadow(0 0 10px rgba(46,230,166,0.5)); }
.auth__title { font-family: var(--font-display); font-size: 1.5rem; margin-top: 12px; }
.auth__sub { color: var(--text-dim); font-size: 0.94rem; margin-top: 6px; }

.auth__tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; margin-bottom: 22px; border-radius: var(--radius-pill); background: var(--surface); border: 1px solid var(--border); }
.auth__tab {
  padding: 10px 0; border: 0; border-radius: var(--radius-pill); cursor: pointer;
  background: transparent; color: var(--text-dim); font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
  transition: color 0.25s, background 0.25s;
}
.auth__tab.is-active { background: var(--grad); color: #042018; }

.auth__form { display: flex; flex-direction: column; gap: 16px; }
.auth__field { display: flex; flex-direction: column; gap: 7px; }
.auth__label { font-size: 0.85rem; color: var(--text-dim); font-weight: 500; }
.auth__field input[type="text"],
.auth__field input[type="email"],
.auth__field input[type="password"] {
  width: 100%; padding: 12px 14px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  font-family: var(--font-body); font-size: 0.96rem;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}
.auth__field input::placeholder { color: var(--text-faint); }
.auth__field input:focus { outline: none; border-color: var(--accent); background: var(--surface-2); box-shadow: 0 0 0 3px rgba(46,230,166,0.15); }
.auth__field.is-invalid input { border-color: #ff6b6b; box-shadow: 0 0 0 3px rgba(255,107,107,0.14); }
.auth__err { min-height: 0; font-size: 0.8rem; color: #ff8585; opacity: 0; transition: opacity 0.2s; }
.auth__field.is-invalid .auth__err { opacity: 1; }

.auth__row { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 0.88rem; }
.auth__check { display: inline-flex; align-items: center; gap: 8px; color: var(--text-dim); cursor: pointer; }
.auth__check input { width: 15px; height: 15px; accent-color: var(--accent); }
.auth__link { color: var(--accent); }
.auth__link:hover { text-decoration: underline; }

.auth__submit { margin-top: 4px; }
.auth__submit.is-loading { opacity: 0.7; pointer-events: none; }
.auth__msg { min-height: 1.1em; margin-top: 4px; text-align: center; font-size: 0.9rem; }
.auth__msg.is-ok { color: var(--accent); }
.auth__msg.is-bad { color: #ff8585; }

.auth__foot { margin-top: 18px; text-align: center; color: var(--text-dim); font-size: 0.9rem; }
.auth__switch { border: 0; background: none; color: var(--accent); font-weight: 600; cursor: pointer; font-family: var(--font-body); font-size: 0.9rem; }
.auth__switch:hover { text-decoration: underline; }

body.auth-lock { overflow: hidden; }

/* ============ 导航：已登录态 ============ */
.nav__user {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 14px 7px 8px; border-radius: var(--radius-pill);
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  cursor: pointer; font-family: var(--font-body); font-weight: 600; font-size: 0.92rem;
  transition: border-color 0.25s, background 0.25s;
}
.nav__user:hover { border-color: var(--border-strong); background: var(--surface-2); }
.nav__avatar, .console__avatar {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--grad); color: #042018; font-weight: 800;
  font-family: var(--font-display); text-transform: uppercase;
}
.nav__avatar { width: 26px; height: 26px; font-size: 0.85rem; }
.nav__email { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============ 控制台 ============ */
.console {
  position: fixed; inset: 0; z-index: 210;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.3s var(--ease), visibility 0.3s;
}
.console.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.console__overlay { position: absolute; inset: 0; background: rgba(3,6,10,0.74); backdrop-filter: blur(8px); }
.console__panel {
  position: relative; width: min(96vw, 720px); max-height: 90vh; overflow-y: auto;
  padding: 30px; border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(14,20,28,0.97), rgba(8,12,18,0.97));
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-card), 0 0 60px rgba(46,230,166,0.12);
  transform: translateY(18px) scale(0.98); opacity: 0;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.console.is-open .console__panel { transform: none; opacity: 1; }
.console__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.console__id { display: flex; align-items: center; gap: 14px; }
.console__avatar { width: 48px; height: 48px; font-size: 1.25rem; box-shadow: 0 0 16px rgba(46,230,166,0.35); }
.console__hello { font-family: var(--font-display); font-size: 1.3rem; }
.console__email { color: var(--text-dim); font-size: 0.9rem; margin-top: 2px; }
.console__x {
  width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; border: 1px solid var(--border); background: var(--surface);
  color: var(--text-dim); cursor: pointer; transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.console__x:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }

.console__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 24px; }
.console__stat {
  padding: 18px; border-radius: var(--radius); text-align: center;
  background: var(--surface); border: 1px solid var(--border);
}
.console__stat-num { font-family: var(--font-display); font-weight: 800; font-size: 1.7rem; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.console__stat-label { color: var(--text-dim); font-size: 0.85rem; margin-top: 4px; }

.console__sub { padding: 18px; border-radius: var(--radius); background: var(--accent-soft); border: 1px solid var(--border-strong); margin-bottom: 24px; }
.console__sub-label { display: block; font-size: 0.85rem; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.console__sub-row { display: flex; gap: 10px; }
.console__sub-input {
  flex: 1; min-width: 0; padding: 11px 13px; border-radius: var(--radius);
  background: var(--bg, rgba(6,10,15,0.7)); border: 1px solid var(--border); color: var(--text-dim);
  font-family: var(--font-body); font-size: 0.86rem;
}
.console__sub-input:focus { outline: none; border-color: var(--accent); color: var(--text); }
.console__hint { color: var(--text-faint); font-size: 0.82rem; margin-top: 10px; }

.console__sec-title { font-size: 1.05rem; margin-bottom: 14px; }
.console__region-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.console__region {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 11px 14px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); font-size: 0.9rem;
}
.console__region-name { color: var(--text); }
.console__region-count { color: var(--accent); font-weight: 700; font-family: var(--font-display); }

.console__foot { margin-top: 26px; display: flex; justify-content: flex-end; gap: 12px; }

@media (max-width: 560px) {
  .console__stats { grid-template-columns: 1fr; }
  .console__panel { padding: 22px; }
}

/* ============ 响应式 ============ */
@media (max-width: 940px) {
  .hero { grid-template-columns: 1fr; padding-top: 140px; text-align: center; }
  .hero__cta, .hero__trust { justify-content: center; }
  .hero__sub { margin-inline: auto; }
  .hero__visual { order: -1; min-height: 360px; }
  .network__inner, .platforms__inner { grid-template-columns: 1fr; }
  .network__text .section__title, .platforms__text .section__title { text-align: center; }
  .network__text, .platforms__text { text-align: center; }
  .network__text .btn { display: inline-flex; }
  .how__grid { grid-template-columns: 1fr; gap: 8px; }
  .step__line { display: none; }
  .footer__inner { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 760px) {
  .nav__links, .nav__actions { display: none; }
  .nav__burger { display: flex; }
  .nav.is-open { background: rgba(6,10,15,0.96); backdrop-filter: blur(18px); border-bottom-color: var(--border); }
  .nav.is-open .nav__inner { flex-wrap: wrap; row-gap: 0; }
  .nav.is-open .nav__links,
  .nav.is-open .nav__actions { display: flex; flex-direction: column; width: 100%; }
  .nav.is-open .nav__links { order: 3; gap: 0; margin-top: 8px; }
  .nav.is-open .nav__links a { padding: 14px 4px; border-top: 1px solid var(--border); }
  .nav.is-open .nav__actions { order: 4; gap: 12px; padding: 12px 0 6px; }
  .nav.is-open .nav__actions .btn { width: 100%; justify-content: center; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .features__grid, .pricing__grid { grid-template-columns: 1fr; }
  .platforms__icons { grid-template-columns: repeat(3, 1fr); }
  .section { padding: 72px 20px; }
  .plan--featured { order: -1; }
}
@media (max-width: 420px) {
  .platforms__icons { grid-template-columns: repeat(2, 1fr); }
  .hero__trust { gap: 14px; }
}

/* ============ 套餐管理页 ============ */
.acc-body { min-height: 100vh; }
.acc-top {
  max-width: 1000px; margin: 0 auto; padding: 22px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.acc-top__actions { display: flex; gap: 10px; }
.acc-main { max-width: 1000px; margin: 0 auto; padding: 10px 24px 80px; }

.acc-head {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 26px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(46,230,166,0.10), var(--surface));
  border: 1px solid var(--border-strong); margin-bottom: 22px; flex-wrap: wrap;
}
.acc-user { display: flex; align-items: center; gap: 16px; }
.acc-avatar {
  width: 54px; height: 54px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--grad); color: #042018; font-family: var(--font-display);
  font-weight: 800; font-size: 1.4rem; box-shadow: 0 0 18px rgba(46,230,166,0.4);
}
.acc-title { font-size: 1.5rem; }
.acc-email { color: var(--text-dim); font-size: 0.95rem; margin-top: 3px; }
.acc-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px;
  border-radius: var(--radius-pill); background: var(--accent-soft);
  border: 1px solid var(--border-strong); color: var(--accent); font-size: 0.88rem; font-weight: 600;
}
.acc-badge.is-bad { background: rgba(255,107,107,0.12); border-color: rgba(255,107,107,0.4); color: #ff8585; }
.acc-badge__dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }

.acc-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 22px; }
.acc-stats--2 { grid-template-columns: repeat(3, 1fr); }
.acc-panel.is-disabled { opacity: 0.55; pointer-events: none; }
.acc-card {
  padding: 24px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border);
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
}
.acc-card__label { color: var(--text-dim); font-size: 0.9rem; }
.acc-card__value {
  font-family: var(--font-display); font-weight: 800; font-size: 2.4rem; line-height: 1;
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.acc-card__value--sm { font-size: 1.5rem; }
.acc-card__unit { color: var(--accent); font-weight: 700; font-size: 0.95rem; }

.acc-panel {
  padding: 24px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border); margin-bottom: 22px;
}
.acc-panel__head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.acc-panel__head h2 { font-size: 1.15rem; }
.acc-panel__sub { color: var(--text-dim); font-size: 0.92rem; }
.acc-bar { height: 12px; border-radius: 999px; background: rgba(255,255,255,0.07); overflow: hidden; }
.acc-bar__fill { height: 100%; border-radius: 999px; background: var(--grad); transition: width 0.8s var(--ease); }
.acc-bar__fill.is-warn { background: linear-gradient(90deg, #f5c451, #f59e51); }
.acc-bar__fill.is-danger { background: linear-gradient(90deg, #ff8585, #ff5b5b); }
.acc-legend { display: flex; gap: 22px; margin-top: 14px; flex-wrap: wrap; color: var(--text-dim); font-size: 0.9rem; }
.acc-legend b { color: var(--text); font-weight: 700; }
.acc-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.acc-dot--used { background: var(--accent); }
.acc-dot--free { background: rgba(255,255,255,0.25); }

.acc-sub-row { display: flex; gap: 10px; }
.acc-sub-input {
  flex: 1; min-width: 0; padding: 12px 14px; border-radius: var(--radius);
  background: rgba(6,10,15,0.7); border: 1px solid var(--border); color: var(--text-dim);
  font-family: var(--font-body); font-size: 0.88rem;
}
.acc-sub-input:focus { outline: none; border-color: var(--accent); color: var(--text); }
.acc-hint { color: var(--text-faint); font-size: 0.82rem; margin-top: 12px; }
.acc-msg { text-align: center; font-size: 0.92rem; min-height: 1.1em; }
.acc-msg.is-bad { color: #ff8585; }

@media (max-width: 680px) {
  .acc-stats, .acc-stats--2 { grid-template-columns: 1fr; }
  .acc-head { flex-direction: column; align-items: flex-start; }
}

/* ============ 无障碍：减少动效 ============ */
@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; }
}