/* ============================================================
   GPT 代充服务官网 — 亮色「品牌蓝 × 活力橙」
   设计系统源: design-system/gpt-midnight-gallery/MASTER.md (v2 亮色)
   ============================================================ */

/* Fonts — 生产环境若面向大陆直连用户，可将 host 换为 fonts.loli.net 镜像 */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&family=Noto+Serif+SC:wght@500;600;700&family=Noto+Sans+SC:wght@400;500&display=swap');

/* ------------------------------------------------------------
   Design Tokens — 亮色系
   ------------------------------------------------------------ */
:root {
  /* 亮白底 + 品牌蓝 + 活力橙 CTA */
  --color-background: #f8fafc;
  --color-card: #ffffff;
  --color-muted: #eef2f7;
  --color-foreground: #1e293b;
  --color-muted-foreground: #64748b;
  --color-accent: #2563eb;         /* 品牌蓝 — 链接/标签/图表/推荐描边 */
  --color-accent-dark: #1d4ed8;    /* 蓝 hover（亮底下加深） */
  --color-accent-light: #93c5fd;   /* 蓝装饰浅端 */
  --color-accent-tint: #eff6ff;    /* 蓝浅底 */
  --color-cta: #c2410c;            /* 活力橙 CTA（白字达 4.9:1） */
  --color-cta-bright: #ea580c;     /* 橙亮端（渐变/大数字用） */
  --color-cta-hover: #9a3412;
  --color-on-cta: #ffffff;
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;
  --color-ring: #2563eb;

  /* 图表渐变 — 仅限图表与微细节 */
  --chart-gradient: linear-gradient(90deg, #7dd3fc, #2563eb);
  --chart-gradient-hot: linear-gradient(90deg, #fdba74, #ea580c);

  /* 字体 */
  --font-display: "Ivy Presto", "Fraunces", "Noto Serif SC", serif;
  --font-body: "Inter", "Noto Sans SC", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  /* 间距（紧凑基调） */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 72px;

  /* 亮色下的柔和凸起 */
  --raise: inset 0 1px 0 rgba(255, 255, 255, 0.9),
           0 1px 2px rgba(15, 23, 42, 0.05),
           0 6px 20px rgba(15, 23, 42, 0.07);

  /* 版心 */
  --container: 1120px;
}

/* ------------------------------------------------------------
   Reset & Base
   ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--color-background);
  color: var(--color-foreground);
  font: 400 16px/1.75 var(--font-body);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

/* 顶部品牌蓝晕光（吸睛焦点） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(1100px 520px at 72% -8%, rgba(37, 99, 235, 0.08), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: rgba(37, 99, 235, 0.16); color: var(--color-foreground); }

.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

section { scroll-margin-top: 88px; }

/* ------------------------------------------------------------
   Typography
   ------------------------------------------------------------ */
.display {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: 0.005em;
}

h1.display { font-size: clamp(40px, 7vw, 88px); }
h2.display { font-size: clamp(32px, 4.5vw, 56px); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font: 500 13px/1 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}
/* 铭牌规线 — 品牌蓝渐变微细节 */
.eyebrow::before {
  content: "";
  width: 40px;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, #7dd3fc, #2563eb);
}

.section { padding-block: var(--space-3xl); }
.section-head { margin-bottom: var(--space-2xl); }
.lede {
  color: var(--color-muted-foreground);
  max-width: 56ch;
  margin-top: var(--space-md);
}

.serif-num {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-foreground);
}

.accent { color: var(--color-accent); }
.hot { color: var(--color-cta); }

/* ------------------------------------------------------------
   Buttons — 药丸形控制
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  border-radius: 999px;
  padding: 13px 30px;
  font: 500 14px/1 var(--font-body);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease,
              transform 0.2s ease, box-shadow 0.2s ease;
}
.btn .icon { width: 15px; height: 15px; stroke: currentColor; stroke-width: 1.5; fill: none; }

/* 橙色 = 钱 按钮（立即充值 / 订阅），白字对比 4.9:1 */
.btn-primary {
  background: var(--color-cta);
  color: var(--color-on-cta);
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.28);
}
.btn-primary:hover {
  background: var(--color-cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(234, 88, 12, 0.34);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: #ffffff;
  color: var(--color-foreground);
  border: 1px solid var(--color-border-strong);
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
}

.btn-sm { padding: 9px 20px; font-size: 13px; }

/* ------------------------------------------------------------
   Nav
   ------------------------------------------------------------ */
.nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 252, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
}
.brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-accent-light);
  border-radius: 8px;
  font-size: 15px;
  color: var(--color-accent);
  background: var(--color-accent-tint);
  box-shadow: var(--raise);
}
.nav-links {
  display: flex;
  gap: var(--space-xl);
  font-size: 14px;
  color: var(--color-muted-foreground);
}
.nav-links a {
  transition: color 0.2s ease;
  cursor: pointer;
}
.nav-links a:hover { color: var(--color-accent-dark); }
.nav-cta { display: flex; gap: var(--space-md); }

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */
.hero {
  padding-block: 168px var(--space-3xl);
  text-align: left;
}
.hero h1 { max-width: 15ch; }
.hero h1 .accent-word { color: var(--color-accent); }
.hero-sub {
  color: var(--color-muted-foreground);
  max-width: 52ch;
  margin-top: var(--space-lg);
  font-size: 17px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}
.hero-meta {
  margin-top: var(--space-xl);
  font: 400 13.5px/1.9 var(--font-mono);
  color: var(--color-muted-foreground);
  letter-spacing: 0.03em;
}
.hero-meta .sep { margin-inline: 12px; color: var(--color-accent-light); }

/* 统计条 */
.ticker {
  border-block: 1px solid var(--color-border);
  background: #ffffff;
}
.ticker-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.ticker-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 20px var(--space-lg);
  border-left: 1px solid var(--color-border);
}
.ticker-item:first-child { border-left: none; padding-left: 0; }
.ticker-item .spark { flex: none; }
.ticker-item .label {
  font: 400 13.5px/1.6 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--color-muted-foreground);
}
.ticker-item .value {
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 600;
  line-height: 1.3;
}

/* ------------------------------------------------------------
   Pricing Cards
   ------------------------------------------------------------ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  align-items: stretch;
}
.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: var(--space-xl);
  box-shadow: var(--raise);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.plan:hover {
  transform: translateY(-3px);
  border-color: var(--color-border-strong);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
}
.plan--featured {
  border-color: rgba(37, 99, 235, 0.5);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.05), transparent 32%), #ffffff;
  box-shadow: 0 8px 26px rgba(37, 99, 235, 0.12);
}
.plan-badge {
  position: absolute;
  top: -13px;
  left: var(--space-xl);
  font: 500 12.5px/1 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--color-cta);
  background: #ffffff;
  border: 1px solid rgba(234, 88, 12, 0.45);
  border-radius: 999px;
  padding: 6px 14px;
}
.plan-tier {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font: 400 13px/1.4 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--color-muted-foreground);
}
.plan-name {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  margin-top: var(--space-md);
}
.plan-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}
.plan-price .amount {
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 600;
  line-height: 1;
  color: var(--color-cta-bright); /* 大号数字用亮橙（46px 大文本 3:1 达标） */
}
.plan--featured .plan-price .amount { color: var(--color-accent); }
.plan-price .per { font-size: 13px; color: var(--color-muted-foreground); }
.plan-price .was {
  font-size: 14px;
  color: var(--color-muted-foreground);
  text-decoration: line-through;
  text-decoration-color: #94a3b8;
}
.plan-for { margin-top: var(--space-lg); font-size: 14px; color: var(--color-accent); }
.plan-features { margin-top: var(--space-sm); display: grid; gap: 10px; }
.plan-features li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: var(--color-muted-foreground);
}
.plan-features .icon {
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 6px;
  stroke: var(--color-accent);
  stroke-width: 1.5;
  fill: none;
}
.plan-foot {
  margin-top: auto;
  padding-top: var(--space-lg);
  font: 400 13px/1.7 var(--font-mono);
  color: var(--color-muted-foreground);
}
.plan .btn { width: 100%; margin-top: var(--space-lg); }

/* ------------------------------------------------------------
   Quota Chart
   ------------------------------------------------------------ */
.chart-panel {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: var(--raise);
  padding: var(--space-xl);
}
.chart-title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font: 500 13px/1.4 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--color-muted-foreground);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}
.chart-title .live { color: var(--color-accent); }

.bar-row {
  display: grid;
  grid-template-columns: 110px 1fr 92px;
  align-items: center;
  gap: var(--space-md);
  padding-block: 14px;
  border-bottom: 1px solid #eef2f7;
}
.bar-row:last-of-type { border-bottom: none; }
.bar-label { font-size: 15px; }
.bar-label small { display: block; font: 400 12.5px/1.6 var(--font-mono); color: var(--color-muted-foreground); }
.bar-track {
  position: relative;
  height: 18px;
  background: var(--color-muted);
  border-radius: 3px;
}
.bar-fill {
  position: absolute;
  inset: 1px auto 1px 1px;
  min-width: 3px;
  background: var(--chart-gradient);
  border-radius: 3px;
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
/* 重点套餐柱 — 橙色渐变高亮 */
.bar-fill--hot { background: var(--chart-gradient-hot); }
.bar-row.is-visible .bar-fill { transform: scaleX(1); }
.bar-value {
  font-family: var(--font-mono);
  font-size: 15px;
  text-align: right;
  color: var(--color-foreground);
}
.bar-value small { font-size: 13px; color: var(--color-muted-foreground); }

.chart-note {
  margin-top: var(--space-md);
  font-size: 14px;
  color: var(--color-muted-foreground);
}
.chart-note a { color: var(--color-accent); border-bottom: 1px solid var(--color-accent-light); cursor: pointer; }

/* 数据表 — a11y fallback */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-lg);
  font: 400 13.5px/1.7 var(--font-mono);
}
.data-table caption {
  text-align: left;
  font: 500 13px/1.4 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--color-muted-foreground);
  padding-bottom: 10px;
}
.data-table th, .data-table td {
  border: 1px solid #e2e8f0;
  padding: 8px 12px;
  text-align: right;
}
.data-table th:first-child, .data-table td:first-child { text-align: left; }
.data-table th { color: var(--color-muted-foreground); font-weight: 500; background: var(--color-muted); }
.data-table td .hl { color: var(--color-cta); font-weight: 500; }

/* ------------------------------------------------------------
   Process
   ------------------------------------------------------------ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.step {
  border-top: 2px solid var(--color-border-strong);
  padding-top: var(--space-lg);
}
.step .no {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 500;
  line-height: 1;
  color: var(--color-accent);
  font-style: italic;
}
.step h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  margin-top: var(--space-md);
}
.step p { margin-top: var(--space-sm); font-size: 14.5px; color: var(--color-muted-foreground); }
.step .fine {
  margin-top: var(--space-md);
  font: 400 13px/1.8 var(--font-mono);
  color: var(--color-muted-foreground);
  border-left: 2px solid var(--color-accent-light);
  padding-left: 12px;
}

/* ------------------------------------------------------------
   Guarantee
   ------------------------------------------------------------ */
.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}
.g-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: var(--space-xl);
  box-shadow: var(--raise);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.g-card:hover { border-color: var(--color-accent-light); transform: translateY(-2px); }
.g-card .icon {
  width: 22px;
  height: 22px;
  stroke: var(--color-accent);
  stroke-width: 1.5;
  fill: none;
}
.g-card h3 { font-family: var(--font-display); font-size: 20px; font-weight: 600; margin-top: var(--space-md); }
.g-card p { margin-top: var(--space-sm); font-size: 14.5px; color: var(--color-muted-foreground); }

/* ------------------------------------------------------------
   FAQ
   ------------------------------------------------------------ */
.faq-list { max-width: 760px; }
.faq {
  border-bottom: 1px solid var(--color-border);
}
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding-block: 22px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s ease;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--color-accent-dark); }
.faq summary .sign {
  flex: none;
  font: 400 18px/1 var(--font-mono);
  color: var(--color-accent);
  transition: transform 0.25s ease;
}
.faq[open] summary .sign { transform: rotate(45deg); }
.faq .answer {
  padding-bottom: 22px;
  font-size: 15px;
  color: var(--color-muted-foreground);
  max-width: 62ch;
}
.faq .answer em { font-style: normal; color: var(--color-foreground); }

/* 防封注意事项编号警示列表 */
.faq .answer .warn-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
  counter-reset: warn;
}
.faq .answer .warn-list li {
  counter-increment: warn;
  position: relative;
  padding-left: 34px;
}
.faq .answer .warn-list li::before {
  content: counter(warn, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font: 500 12px/1.5 var(--font-mono);
  color: var(--color-cta);
}

/* ------------------------------------------------------------
   Final CTA
   ------------------------------------------------------------ */
.final {
  text-align: center;
  border-block: 1px solid var(--color-border);
  background:
    radial-gradient(700px 300px at 50% 120%, rgba(234, 88, 12, 0.07), transparent 70%),
    var(--color-accent-tint);
  padding-block: var(--space-3xl);
}
.final h2 { max-width: 18ch; margin-inline: auto; }
.final p { color: var(--color-muted-foreground); margin-top: var(--space-md); }
.final .hero-cta { justify-content: center; }

/* ------------------------------------------------------------
   Legal & Footer
   ------------------------------------------------------------ */
.legal {
  padding-block: var(--space-xl);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--color-muted-foreground);
  border-bottom: 1px solid var(--color-border);
}
.legal strong { color: var(--color-muted-foreground); font-weight: 500; }

.footer { padding-block: var(--space-2xl) var(--space-xl); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
}
.footer .about { font-size: 14px; color: var(--color-muted-foreground); max-width: 36ch; margin-top: var(--space-md); }
.footer h4 {
  font: 500 12.5px/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--color-muted-foreground);
  margin-bottom: var(--space-md);
}
.footer li { font-size: 14px; margin-bottom: 10px; }
.footer li a { color: var(--color-muted-foreground); transition: color 0.2s ease; cursor: pointer; }
.footer li a:hover { color: var(--color-accent-dark); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  font: 400 12.5px/1.8 var(--font-mono);
  color: var(--color-muted-foreground);
}

/* ------------------------------------------------------------
   Scroll Reveal
   ------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ------------------------------------------------------------
   Reduced Motion
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .bar-fill { transform: scaleX(1); }
}

/* ------------------------------------------------------------
   Responsive
   ------------------------------------------------------------ */
@media (max-width: 1024px) {
  .pricing-grid, .process-grid, .guarantee-grid { grid-template-columns: 1fr 1fr; }
  .plan--featured { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding-block: 128px var(--space-2xl); }
  .ticker-inner { grid-template-columns: 1fr 1fr; }
  .ticker-item:nth-child(odd) { border-left: none; padding-left: 0; }
  .ticker-item { border-top: 1px solid var(--color-border); }
  .ticker-item:nth-child(-n+2) { border-top: none; }
  .pricing-grid, .process-grid, .guarantee-grid { grid-template-columns: 1fr; }
  .bar-row { grid-template-columns: 84px 1fr 76px; gap: var(--space-sm); }
  .chart-panel { padding: var(--space-lg); }
}

@media (max-width: 480px) {
  .container { width: min(var(--container), 100% - 40px); }
  .ticker-inner { grid-template-columns: 1fr; }
  .ticker-item { border-left: none; padding-left: 0; border-top: 1px solid var(--color-border); }
  .ticker-item:first-child { border-top: none; }
  .nav-cta .btn-outline { display: none; }
  .data-table { font-size: 12.5px; }
  .data-table th, .data-table td { padding: 6px 8px; }
}

/* ============================================================
   交互动画（亮色版）
   ============================================================ */

/* Hero 载入序列：眉题 → 标题 → 副文 → 按钮 → 元信息 依次浮现 */
.hero .eyebrow,
.hero h1,
.hero-sub,
.hero-cta,
.hero-meta {
  animation: hero-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.hero h1 { animation-delay: 0.08s; }
.hero-sub { animation-delay: 0.18s; }
.hero-cta { animation-delay: 0.28s; }
.hero-meta { animation-delay: 0.38s; }
@keyframes hero-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

/* 页面阅读进度条（导航底缘，蓝→橙渐变） */
.nav-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, #7dd3fc, #2563eb 60%, #ea580c);
  transform-origin: left center;
  transform: scaleX(0);
}
.nav.is-scrolled { box-shadow: 0 8px 24px rgba(15, 23, 42, 0.1); }

/* 统计条迷你曲线：滚动到视口时描画 */
.spark polyline {
  stroke-dasharray: 60;
  stroke-dashoffset: 60;
}
.spark.is-visible polyline {
  transition: stroke-dashoffset 1.1s ease 0.15s;
  stroke-dashoffset: 0;
}

/* 橙色主按钮：箭头滑移 + 光泽扫过 */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary .icon { transition: transform 0.25s ease; }
.btn-primary:hover .icon { transform: translateX(4px); }
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-18deg);
  transition: left 0.5s ease;
  pointer-events: none;
}
.btn-primary:hover::after { left: 120%; }

/* 套餐卡：hover 时勾选图标逐个点亮为橙色 */
.plan .plan-features .icon { transition: stroke 0.25s ease; }
.plan:hover .plan-features .icon { stroke: var(--color-cta-bright); }
.plan:hover .plan-features li:nth-child(2) .icon { transition-delay: 0.06s; }
.plan:hover .plan-features li:nth-child(3) .icon { transition-delay: 0.12s; }
.plan:hover .plan-features li:nth-child(4) .icon { transition-delay: 0.18s; }

/* 推荐徽章轻微呼吸光圈（吸睛） */
@keyframes badge-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.28); }
  55% { box-shadow: 0 0 0 7px rgba(234, 88, 12, 0); }
}
.plan-badge { animation: badge-pulse 2.6s ease-in-out infinite; }

/* FAQ 开合：答案轻微下滑淡入（仅展开时触发） */
.faq[open] .answer { animation: faq-open 0.3s ease both; }
@keyframes faq-open {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* 保障卡图标：hover 回弹上浮 */
.g-card .icon { transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); }
.g-card:hover .icon { transform: translateY(-3px) scale(1.08); }

/* 价格数字：hover 时轻微上抬 */
.plan-price .amount { transition: transform 0.25s ease; display: inline-block; }
.plan:hover .plan-price .amount { transform: translateY(-2px); }

/* ============================================================
   微信支付专区 & 悬浮按钮
   ============================================================ */
.wechat-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-2xl);
  align-items: center;
}
.qr-steps {
  display: grid;
  gap: 14px;
  margin-top: var(--space-xl);
}
.qr-steps li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15.5px;
}
.qr-steps .n {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--color-accent-tint);
  color: var(--color-accent-dark);
  font: 500 13px/28px var(--font-mono);
  text-align: center;
}
/* 开票高亮提示条 */
.invoice-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: var(--space-lg);
  padding: 14px 18px;
  background: var(--color-accent-tint);
  border: 1px solid rgba(37, 99, 235, 0.28);
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-foreground);
}
.invoice-note .icon {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  stroke: var(--color-accent);
  stroke-width: 1.5;
  fill: none;
}
.invoice-note strong { color: var(--color-accent-dark); font-weight: 600; }
.qr-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-xl);
  text-align: center;
  box-shadow: var(--raise);
  max-width: 320px;
  margin-inline: auto;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.qr-card:hover { transform: translateY(-3px); border-color: rgba(7, 193, 96, 0.55); }
.qr-frame {
  display: inline-block;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 12px;
  background: #ffffff;
}
.qr-frame svg { width: 180px; height: 180px; }
.qr-frame img { width: 180px; height: 180px; object-fit: contain; border-radius: 4px; }
.qr-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-top: var(--space-lg);
}
.qr-card .sub {
  font-size: 13.5px;
  color: var(--color-muted-foreground);
  margin-top: var(--space-sm);
}
.qr-note {
  margin-top: var(--space-md);
  font: 400 12.5px/1.7 var(--font-mono);
  color: var(--color-muted-foreground);
}

/* 悬浮微信按钮（常驻右下角，微信绿） */
.fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #07c160;
  color: #ffffff;
  border-radius: 999px;
  padding: 14px 22px;
  font: 500 14px/1 var(--font-body);
  letter-spacing: 0.04em;
  box-shadow: 0 10px 28px rgba(7, 193, 96, 0.42);
  transition: transform 0.2s ease, background 0.2s ease;
  animation: fab-pulse 2.8s ease-in-out infinite;
}
.fab:hover { transform: translateY(-2px); background: #06ad56; }
.fab .icon { width: 20px; height: 20px; stroke: #ffffff; stroke-width: 1.5; fill: none; }
@keyframes fab-pulse {
  0%, 100% { box-shadow: 0 10px 28px rgba(7, 193, 96, 0.42), 0 0 0 0 rgba(7, 193, 96, 0.35); }
  55% { box-shadow: 0 10px 28px rgba(7, 193, 96, 0.42), 0 0 0 12px rgba(7, 193, 96, 0); }
}

@media (max-width: 768px) {
  .wechat-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
}
@media (max-width: 480px) {
  .fab { right: 16px; bottom: 16px; padding: 12px 18px; }
}

/* ============================================================
   条款与政策文档页（policies / terms / privacy / agreement）
   ============================================================ */

/* --- 文档页头部 --- */
.doc-hero { padding: 136px 0 var(--space-lg); }
.doc-hero .display { font-size: clamp(34px, 4.5vw, 52px); }
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-lg);
  margin-top: var(--space-lg);
  font: 400 13px/1.6 var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--color-muted-foreground);
}
.doc-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--color-border-strong); }

/* --- 非官方声明警示框 --- */
.doc-alert {
  position: relative;
  margin-top: var(--space-xl);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-accent-tint);
  border: 1px solid #dbeafe;
  border-left: 3px solid var(--color-accent);
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-foreground);
}
.doc-alert strong { font-weight: 600; color: var(--color-accent-dark); }

/* --- 正文布局：侧边目录 + 单栏正文 --- */
.doc-layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: var(--space-2xl);
  padding-block: var(--space-2xl) var(--space-3xl);
  align-items: start;
}

.doc-toc {
  position: sticky;
  top: 96px;
  padding: var(--space-lg);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: var(--raise);
}
.doc-toc h2 {
  font: 500 12.5px/1.4 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--color-muted-foreground);
  margin-bottom: var(--space-md);
}
.doc-toc ul { display: grid; gap: 2px; }
.doc-toc a {
  display: block;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-muted-foreground);
  transition: color 0.15s ease, background 0.15s ease;
}
.doc-toc a:hover { color: var(--color-accent-dark); background: var(--color-accent-tint); }

.doc-body { max-width: 720px; }
.doc-body h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.4;
  margin: var(--space-2xl) 0 var(--space-md);
  scroll-margin-top: 96px;
}
.doc-body h2:first-child { margin-top: 0; }
.doc-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin: var(--space-lg) 0 var(--space-sm);
}
.doc-body p {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--color-foreground);
  margin-bottom: var(--space-md);
}
.doc-body p:last-child { margin-bottom: 0; }
.doc-body strong { font-weight: 600; }
.doc-body em { font-style: normal; color: var(--color-accent-dark); font-weight: 500; }
.doc-body ul, .doc-body ol { margin: 0 0 var(--space-md); display: grid; gap: 8px; }
.doc-body li {
  position: relative;
  padding-left: var(--space-lg);
  font-size: 15.5px;
  line-height: 1.85;
}
.doc-body li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.85em;
  width: 8px;
  height: 2px;
  border-radius: 1px;
  background: var(--color-accent-light);
}
.doc-body ol { counter-reset: doc-item; }
.doc-body ol li::before {
  counter-increment: doc-item;
  content: counter(doc-item);
  top: 0;
  left: 0;
  width: auto;
  height: auto;
  background: none;
  font: 500 13px/1.9 var(--font-mono);
  color: var(--color-accent);
}

/* 小节强调块（处理时效 / 到账时效等） */
.doc-note {
  margin: var(--space-md) 0;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-muted);
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-foreground);
}
.doc-note strong { font-weight: 600; }

/* 退款政策三种情形的标记 */
.doc-tag {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 8px;
  border-radius: 4px;
  font: 500 12.5px/1.7 var(--font-mono);
}
.doc-tag--ok { background: #dcfce7; color: #15803d; }
.doc-tag--warn { background: #ffedd5; color: #c2410c; }

/* --- policies 总览页卡片 --- */
.policy-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}
.policy-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-xl);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: var(--raise);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.policy-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent-light);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
}
.policy-card .k {
  font: 500 12.5px/1 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}
.policy-card h3 { font-size: 19px; font-weight: 600; }
.policy-card p { font-size: 14px; line-height: 1.8; color: var(--color-muted-foreground); flex: 1; }
.policy-card .go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-accent-dark);
}
.policy-card .go .icon { width: 14px; height: 14px; stroke: currentColor; stroke-width: 1.5; fill: none; }

/* 主体信息卡（运营主体 / 注册地址） */
.entity-card {
  margin-top: var(--space-xl);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-card);
  border: 1px dashed var(--color-border-strong);
  border-radius: 12px;
  font: 400 13px/2 var(--font-mono);
  color: var(--color-muted-foreground);
}
.entity-card strong { color: var(--color-foreground); font-weight: 500; }

/* --- 文档页响应式 --- */
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; }
  .doc-toc { position: static; }
  .doc-toc ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
  }
  .doc-toc a { background: var(--color-muted); }
  .policy-cards { grid-template-columns: 1fr; }
  .doc-hero { padding-top: 112px; }
}