/* ==========================================================================
   website_friend — 遇见 · 盲盒纸条
   设计令牌 / 基础样式 / 组件
   ========================================================================== */

/* ---------- 1. 设计令牌（米白 + 香槟金 亮色主题） ---------- */
:root {
  --ink-900: #f2f3f5;
  --ink-800: #ffffff;
  --ink-750: #fbfbfc;
  --ink-700: #ffffff;
  --ink-600: #f7f8f9;
  --ink-500: #eef0f2;

  --gold: #b08d3f;
  --gold-light: #c9a961;
  --gold-deep: #8a6d2e;
  --gold-soft: rgba(176, 141, 63, 0.12);
  --gold-line: rgba(176, 141, 63, 0.3);

  --ivory: #1d1b18;
  --text: #3d3b38;
  --muted: #6e6b66;
  --muted-dim: #918d86;

  --seal: #b4453f;
  --seal-ink: #a03934;
  --seal-soft: rgba(180, 69, 63, 0.12);

  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 26px;
  --radius-pill: 999px;

  --container: 1240px;
  --container-narrow: 940px;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", ui-monospace, "Menlo", monospace;

  --shadow-soft: 0 24px 60px -30px rgba(24, 28, 38, 0.24);
  --shadow-card: 0 18px 44px -26px rgba(24, 28, 38, 0.2);
  --shadow-gold: 0 16px 40px -20px rgba(176, 141, 63, 0.45);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. 基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--ink-800);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.2; }
input, textarea { font: inherit; }

::selection { background: rgba(201, 169, 97, 0.3); color: #fff; }

/* 键盘跳转链接（无障碍：Tab 首站，可直达主要内容） */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  background: var(--gold);
  color: #17130a;
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-gold);
  transform: translateY(-180%);
  transition: transform 0.24s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: none;
  outline: 2px solid var(--ivory);
  outline-offset: 3px;
}
main[tabindex="-1"]:focus { outline: none; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--ink-900); }
::-webkit-scrollbar-thumb {
  background: rgba(201, 169, 97, 0.25);
  border-radius: var(--radius-pill);
  border: 2px solid var(--ink-900);
}
::-webkit-scrollbar-thumb:hover { background: rgba(201, 169, 97, 0.45); }

/* 全局氛围层 */
.page-ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.page-ambient::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(201, 169, 97, 0.05), transparent 70%),
    radial-gradient(760px 460px at 92% 6%, rgba(180, 69, 63, 0.03), transparent 72%);
}

.page-ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(20, 22, 28, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 22, 28, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 78%);
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.24;
}
.ambient-orb-one {
  width: 520px; height: 520px;
  top: -140px; left: -120px;
  background: radial-gradient(circle, rgba(201, 169, 97, 0.16), transparent 68%);
}
.ambient-orb-two {
  width: 620px; height: 620px;
  top: 34%; right: -220px;
  background: radial-gradient(circle, rgba(180, 69, 63, 0.1), transparent 70%);
}

/* ---------- 3. 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 1;
}
.container-narrow { max-width: var(--container-narrow); }

.section {
  position: relative;
  padding: 132px 0;
}
.section-tight { padding: 92px 0; }

.section-head {
  max-width: 760px;
  margin-bottom: 68px;
}
.section-head-center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 22px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}

.section-title {
  font-family: var(--font-display);
  font-size: 46px;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ivory);
  text-wrap: balance;
}
.section-title em {
  font-style: normal;
  color: var(--gold);
}
.section-desc {
  margin-top: 20px;
  font-size: 17px;
  color: var(--muted);
  max-width: 640px;
}
.section-head-center .section-desc { margin-left: auto; margin-right: auto; }

.divider-gold {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, var(--gold-line) 22%, var(--gold-line) 78%, transparent);
}

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 54px;
  padding: 0 32px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
    background-color 0.28s var(--ease), color 0.28s var(--ease), border-color 0.28s var(--ease);
}
.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.btn-primary {
  position: relative;
  overflow: hidden;
  color: #17130a;
  background: linear-gradient(120deg, var(--gold-light), var(--gold) 46%, var(--gold-deep));
  box-shadow: var(--shadow-gold);
}
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -140%;
  width: 60%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-18deg);
  transition: left 0.75s var(--ease);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 22px 52px -18px rgba(201, 169, 97, 0.6); }
.btn-primary:hover::after { left: 150%; }

.btn-ghost {
  color: var(--ivory);
  border: 1px solid var(--gold-line);
  background: rgba(20, 22, 28, 0.05);
}
.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(201, 169, 97, 0.55);
  background: var(--gold-soft);
}

.btn-sm { height: 44px; padding: 0 24px; font-size: 14px; }

/* ---------- 5. 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease),
    backdrop-filter 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(250, 247, 240, 0.88);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  border-bottom-color: rgba(201, 169, 97, 0.14);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  height: 82px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.brand img { width: 40px; height: 40px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ivory);
}
.brand-text span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 38px;
  margin-left: auto;
}
.site-nav a {
  position: relative;
  font-size: 15px;
  color: var(--muted);
  transition: color 0.25s var(--ease);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s var(--ease);
}
.site-nav a:hover { color: var(--ivory); }
.site-nav a:hover::after { transform: scaleX(1); }
.site-nav a.is-active { color: var(--gold); }
.site-nav a.is-active::after { transform: scaleX(1); }

.header-cta { flex-shrink: 0; }

/* ---------- 6. 首屏 ---------- */
.hero {
  position: relative;
  padding: 196px 0 128px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 72px;
  align-items: center;
}

.hero-eyebrow { margin-bottom: 26px; }

.hero-title {
  font-family: var(--font-display);
  font-size: 68px;
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--ivory);
}
.hero-title span { display: block; }
.hero-title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--gold-light), var(--gold) 52%, var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  margin-top: 30px;
  max-width: 520px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 44px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-top: 52px;
  padding-top: 30px;
  border-top: 1px solid rgba(20, 22, 28, 0.11);
}
.hero-meta-item { display: flex; flex-direction: column; gap: 4px; }
.hero-meta-item strong {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--ivory);
}
.hero-meta-item span { font-size: 13px; color: var(--muted-dim); }

/* 纸条卡片堆 */
.hero-notes {
  position: relative;
  height: 520px;
  perspective: 1400px;
}
.hero-notes::before {
  content: "";
  position: absolute;
  inset: 8% 4%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 169, 97, 0.08), transparent 66%);
  filter: blur(40px);
}

.note-card {
  position: absolute;
  width: 322px;
  padding: 30px 30px 26px;
  border-radius: var(--radius);
  background: linear-gradient(168deg, #ffffff, #f7f7f4 88%);
  color: #241f18;
  box-shadow: 0 30px 70px -26px rgba(24, 28, 38, 0.26);
  transform-style: preserve-3d;
  transition: transform 0.6s var(--ease), box-shadow 0.6s var(--ease);
}
.note-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(201, 169, 97, 0.35);
  pointer-events: none;
}
.note-card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(36, 31, 24, 0.18);
}
.note-card-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.note-card-gender {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(180, 69, 63, 0.1);
  color: var(--seal-ink);
  letter-spacing: 0.06em;
}
.note-card-rows { margin-top: 16px; display: grid; gap: 8px; }
.note-card-row {
  display: flex;
  gap: 12px;
  font-size: 13px;
  color: #5b5346;
}
.note-card-row b {
  font-weight: 500;
  min-width: 56px;
  color: #6f6757;
  flex-shrink: 0;
}
.note-card-row span { color: #332c22; }
.note-card-intro {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed rgba(36, 31, 24, 0.18);
  font-size: 13px;
  line-height: 1.85;
  color: #4a4237;
}
.note-card-contact {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #6f6757;
}
.note-card-contact svg { width: 14px; height: 14px; flex: 0 0 auto; }
.note-card-seal {
  position: absolute;
  right: 26px;
  bottom: 22px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--seal);
  color: #fdf3f2;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 18px -8px rgba(180, 69, 63, 0.9);
}

.note-card--1 { top: 26px; left: 6%; transform: rotate(-7deg); z-index: 3; }
.note-card--2 { top: 138px; left: 24%; transform: rotate(3.5deg); z-index: 2; }
.note-card--3 { top: 252px; left: 8%; transform: rotate(-3deg); z-index: 1; }

.hero-notes:hover .note-card--1 { transform: rotate(-9deg) translate(-16px, -14px); }
.hero-notes:hover .note-card--2 { transform: rotate(5deg) translate(14px, -6px); }
.hero-notes:hover .note-card--3 { transform: rotate(-2deg) translate(-8px, 16px); }

.hero-scroll {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 84px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted-dim);
}
.hero-scroll i {
  display: block;
  width: 1px;
  height: 42px;
  background: linear-gradient(180deg, var(--gold), transparent);
}

/* ---------- 7. 信任条 ---------- */
.trust-strip {
  padding: 34px 0;
  border-top: 1px solid rgba(20, 22, 28, 0.1);
  border-bottom: 1px solid rgba(20, 22, 28, 0.1);
  background: rgba(20, 22, 28, 0.035);
}
.trust-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.trust-item { display: flex; align-items: center; gap: 16px; }
.trust-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  color: var(--gold);
}
.trust-icon svg { width: 21px; height: 21px; }
.trust-text strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ivory);
}
.trust-text span { font-size: 13px; color: var(--muted-dim); }

/* ---------- 8. 玩法流程 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.steps::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-line) 12%, var(--gold-line) 88%, transparent);
}
.step {
  position: relative;
  padding: 0 26px;
  text-align: center;
}
.step-no {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  margin: 0 auto 26px;
  border-radius: 50%;
  background: var(--ink-750);
  border: 1px solid var(--gold-line);
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--gold);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}
.step:hover .step-no {
  transform: translateY(-6px);
  border-color: rgba(201, 169, 97, 0.6);
  box-shadow: 0 18px 40px -18px rgba(201, 169, 97, 0.6);
}
.step h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--ivory);
  margin-bottom: 12px;
}
.step p { font-size: 14px; line-height: 1.85; color: var(--muted); }

/* ---------- 9. 纸条示例 ---------- */
.tape-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.tape-card {
  position: relative;
  padding: 30px;
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(20, 22, 28, 0.09), rgba(20, 22, 28, 0.04));
  border: 1px solid rgba(20, 22, 28, 0.12);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.tape-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold-line);
  box-shadow: var(--shadow-card);
}
.tape-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.12);
}
.tape-card-name {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--ivory);
}
.tape-card-tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--gold-line);
  color: var(--gold);
  letter-spacing: 0.08em;
}
.tape-card-rows {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 18px;
  margin-top: 20px;
}
.tape-row { font-size: 13px; }
.tape-row b {
  display: block;
  font-weight: 400;
  font-size: 12px;
  color: var(--muted-dim);
  margin-bottom: 3px;
}
.tape-row span { color: var(--text); }
.tape-card-intro {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed rgba(20, 22, 28, 0.15);
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}
.tape-card-contact {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted-dim);
}
.tape-card-contact svg { width: 14px; height: 14px; }
.tape-hint {
  margin-top: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 14px;
  color: var(--muted-dim);
}
.tape-hint svg { width: 16px; height: 16px; color: var(--gold); }

/* ---------- 10. 价值主张 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 34px 32px;
  border-radius: var(--radius);
  background: rgba(20, 22, 28, 0.055);
  border: 1px solid rgba(20, 22, 28, 0.11);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), background-color 0.4s var(--ease);
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--gold-line);
  background: rgba(201, 169, 97, 0.045);
}
.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gold-line);
  background: var(--gold-soft);
  color: var(--gold);
  margin-bottom: 22px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ivory);
  margin-bottom: 12px;
}
.feature-card p { font-size: 14px; line-height: 1.85; color: var(--muted); }

/* ---------- 11. 安全 ---------- */
.safety-layout {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 72px;
  align-items: start;
}
.safety-list { display: grid; gap: 22px; }
.safety-item {
  display: flex;
  gap: 20px;
  padding: 26px 28px;
  border-radius: var(--radius);
  background: rgba(20, 22, 28, 0.055);
  border: 1px solid rgba(20, 22, 28, 0.11);
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease);
}
.safety-item:hover { border-color: var(--gold-line); transform: translateX(4px); }
.safety-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  color: var(--gold);
}
.safety-icon svg { width: 20px; height: 20px; }
.safety-item h3 {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ivory);
  margin-bottom: 8px;
}
.safety-item p { font-size: 14px; line-height: 1.8; color: var(--muted); }

.antifraud {
  padding: 38px 40px;
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(180, 69, 63, 0.12), rgba(180, 69, 63, 0.03));
  border: 1px solid rgba(180, 69, 63, 0.28);
}
.antifraud-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.antifraud-head svg { width: 22px; height: 22px; color: #e07b74; }
.antifraud-head h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: #f0d9d6;
}
.antifraud ol { counter-reset: fraud; display: grid; gap: 16px; }
.antifraud li {
  counter-increment: fraud;
  position: relative;
  padding-left: 38px;
  font-size: 14px;
  line-height: 1.85;
  color: #cdb6b3;
}
.antifraud li::before {
  content: counter(fraud, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(224, 123, 116, 0.75);
}

/* ---------- 12. 价格 / 规则 ---------- */
.pricing-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 32px;
  align-items: start;
}
.panel {
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, rgba(20, 22, 28, 0.1), rgba(20, 22, 28, 0.04));
  border: 1px solid rgba(20, 22, 28, 0.13);
  overflow: hidden;
}
.panel-head {
  padding: 30px 34px 24px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.12);
}
.panel-head h3 {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--ivory);
}
.panel-head p { margin-top: 8px; font-size: 13px; color: var(--muted-dim); }

.price-list { padding: 12px 34px 30px; }
.price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(20, 22, 28, 0.11);
}
.price-row:last-child { border-bottom: 0; }
.price-row-label strong {
  display: block;
  font-size: 16px;
  color: var(--ivory);
  font-weight: 500;
}
.price-row-label span { font-size: 13px; color: var(--muted-dim); }
.price-row-value {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--ivory);
  white-space: nowrap;
}
.price-row.is-highlight .price-row-value { color: var(--gold); }

.rule-list { padding: 12px 34px 30px; }
.rule-row {
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid rgba(20, 22, 28, 0.11);
}
.rule-row:last-child { border-bottom: 0; }
.rule-row b { font-size: 14px; font-weight: 500; color: var(--muted); flex-shrink: 0; }
.rule-row div { text-align: right; }
.rule-row strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}
.rule-row span { font-size: 13px; color: var(--muted-dim); }

.panel-note {
  margin-top: 26px;
  padding: 18px 24px;
  border-radius: var(--radius-sm);
  background: rgba(201, 169, 97, 0.06);
  border-left: 2px solid var(--gold);
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 13. FAQ ---------- */
.faq-list { display: grid; gap: 14px; }
.faq-item {
  border-radius: var(--radius);
  background: rgba(20, 22, 28, 0.055);
  border: 1px solid rgba(20, 22, 28, 0.11);
  overflow: hidden;
  transition: border-color 0.35s var(--ease), background-color 0.35s var(--ease);
}
.faq-item:hover { border-color: var(--gold-line); }
.faq-item.is-open {
  border-color: var(--gold-line);
  background: rgba(201, 169, 97, 0.04);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 30px;
  text-align: left;
  font-size: 17px;
  font-weight: 500;
  color: var(--ivory);
  transition: color 0.25s var(--ease);
}
.faq-q:hover { color: var(--gold); }
.faq-icon {
  position: relative;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 13px;
  height: 1px;
  background: var(--gold);
  transform: translate(-50%, -50%);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.is-open .faq-icon::after { transform: translate(-50%, -50%) rotate(0deg); opacity: 0; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease);
}
.faq-a-inner {
  padding: 0 30px 28px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 88%;
}

/* ---------- 14. 转化区 ---------- */
.cta-band {
  position: relative;
  padding: 84px 0;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(600px 300px at 18% 0%, rgba(201, 169, 97, 0.1), transparent 70%),
    linear-gradient(150deg, #ffffff, #f4f5f7 62%);
  border: 1px solid var(--gold-line);
  overflow: hidden;
}
.cta-band-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 56px;
  align-items: center;
  padding: 0 64px;
}
.cta-band h2 {
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1.28;
  color: var(--ivory);
}
.cta-band p {
  margin-top: 16px;
  font-size: 16px;
  color: var(--muted);
  max-width: 520px;
}
.cta-band-actions { display: flex; gap: 14px; margin-top: 34px; }

.qr-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 24px 24px 20px;
  border-radius: var(--radius);
  background: rgba(20, 22, 28, 0.09);
  border: 1px solid rgba(20, 22, 28, 0.16);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.qr-card img {
  width: 148px;
  height: 148px;
  border-radius: var(--radius-xs);
  background: #f7f5f0;
  padding: 8px;
}
.qr-card strong { font-size: 14px; color: var(--ivory); }
.qr-card span { font-size: 12px; color: var(--muted-dim); }

/* 站内开始卡片 */
.start-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  max-width: 300px;
  padding: 28px 26px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--gold-line);
  box-shadow: var(--shadow-soft);
}
.start-card strong {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ivory);
}
.start-card span {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}
.start-card .btn { margin-top: 8px; }

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  padding: 76px 0 34px;
  border-top: 1px solid rgba(20, 22, 28, 0.11);
  background: rgba(255, 255, 255, 0.55);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand { margin-bottom: 20px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted-dim);
  max-width: 320px;
}
.footer-col h2 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ivory);
  margin-bottom: 20px;
}
.footer-col ul { display: grid; gap: 12px; }
.footer-col a,
.footer-col li {
  font-size: 14px;
  color: var(--muted-dim);
  transition: color 0.25s var(--ease);
}
.footer-col a:hover { color: var(--gold); }
.footer-disclaimer {
  padding: 24px 0;
  border-top: 1px solid rgba(20, 22, 28, 0.1);
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted-dim);
  max-width: 900px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(20, 22, 28, 0.1);
  font-size: 13px;
  color: var(--muted-dim);
}
.footer-bottom a { transition: color 0.25s var(--ease); }
.footer-bottom a:hover { color: var(--gold); }
.footer-bottom-links { display: flex; gap: 22px; flex-wrap: wrap; }

/* ---------- 16. 内页头图 ---------- */
.page-hero {
  padding: 178px 0 72px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.1);
}
.page-hero .eyebrow { margin-bottom: 20px; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: 54px;
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--ivory);
  max-width: 860px;
}
.page-hero p {
  margin-top: 22px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 680px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted-dim);
  margin-bottom: 26px;
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { color: var(--muted); }

/* ---------- 17. 协议正文 ---------- */
.prose-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 72px;
  align-items: start;
}
.prose-toc {
  position: sticky;
  top: 110px;
  display: grid;
  gap: 4px;
}
.prose-toc strong {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.prose-toc a {
  padding: 9px 14px;
  border-radius: var(--radius-xs);
  border-left: 1px solid rgba(20, 22, 28, 0.13);
  font-size: 14px;
  color: var(--muted-dim);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}
.prose-toc a:hover,
.prose-toc a.is-active {
  color: var(--ivory);
  border-left-color: var(--gold);
  background: rgba(201, 169, 97, 0.05);
}

.prose { max-width: 780px; }
.prose section { margin-bottom: 60px; scroll-margin-top: 110px; }
.prose h2 {
  font-family: var(--font-display);
  font-size: 27px;
  color: var(--ivory);
  padding-bottom: 18px;
  margin-bottom: 26px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.12);
}
.prose h3 {
  font-size: 17px;
  color: var(--gold);
  margin: 30px 0 14px;
}
.prose p {
  font-size: 15px;
  line-height: 2;
  color: var(--muted);
  margin-bottom: 16px;
}
.prose ul { display: grid; gap: 12px; margin: 18px 0; }
.prose ul li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.6;
}
.prose .prose-meta {
  font-size: 13px;
  color: var(--muted-dim);
  padding: 16px 22px;
  border-radius: var(--radius-sm);
  background: rgba(20, 22, 28, 0.06);
  border: 1px solid rgba(20, 22, 28, 0.11);
  margin-bottom: 40px;
}

/* ---------- 18. 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1180px) {
  .hero-title { font-size: 56px; }
  .hero-grid { gap: 48px; }
  .note-card { width: 292px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .prose-layout { grid-template-columns: 1fr; gap: 40px; }
  .prose-toc { position: static; display: flex; flex-wrap: wrap; gap: 8px; }
  .prose-toc strong { width: 100%; }
}

@media (max-width: 980px) {
  .container { padding: 0 28px; }
  .section { padding: 96px 0; }
  .site-nav { display: none; }
  .hero { padding: 148px 0 84px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-notes { height: 420px; margin-top: 24px; }
  .hero-title { font-size: 46px; }
  .section-title { font-size: 36px; }
  .page-hero h1 { font-size: 40px; }
  .trust-list { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 44px 0; }
  .steps::before { display: none; }
  .tape-grid { grid-template-columns: 1fr; }
  .safety-layout { grid-template-columns: 1fr; gap: 40px; }
  .pricing-layout { grid-template-columns: 1fr; }
  .cta-band-inner { grid-template-columns: 1fr; padding: 0 34px; gap: 40px; }
  .cta-band h2 { font-size: 30px; }
  .qr-card { flex-direction: row; align-self: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .header-inner { height: 68px; gap: 16px; }
  .header-cta { display: none; }
  .hero-title { font-size: 34px; }
  .section-title { font-size: 28px; }
  .page-hero { padding: 128px 0 52px; }
  .page-hero h1 { font-size: 30px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-meta { flex-wrap: wrap; gap: 22px; }
  .trust-list { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .note-card { width: 100%; position: relative; inset: auto !important; transform: none !important; margin-bottom: 16px; }
  .hero-notes { height: auto; }
  .hero-notes::before { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .faq-q { padding: 20px 22px; font-size: 15px; }
  .faq-a-inner { padding: 0 22px 22px; max-width: 100%; }
  .cta-band { padding: 56px 0; }
  .cta-band-inner { padding: 0 24px; }
  .cta-band-actions { flex-direction: column; align-items: stretch; }
  .cta-band-actions .btn { width: 100%; }
  .qr-card { flex-direction: column; }
}

/* ==========================================================================
   20. 内页专用组件
   ========================================================================== */

/* 纵向流程 */
.flow { display: grid; }
.flow-item {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 44px;
  padding: 46px 0;
  border-bottom: 1px solid rgba(20, 22, 28, 0.11);
  transition: border-color 0.4s var(--ease);
}
.flow-item:first-child { padding-top: 8px; }
.flow-item:last-child { border-bottom: 0; }
.flow-item:hover { border-bottom-color: var(--gold-line); }
.flow-no {
  font-family: var(--font-mono);
  font-size: 46px;
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(150deg, var(--gold-light), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}
.flow-body h3 {
  font-family: var(--font-display);
  font-size: 25px;
  color: var(--ivory);
  margin-bottom: 14px;
}
.flow-body > p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 680px;
}
.flow-points {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}
.flow-points li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted-dim);
}
.flow-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 12px;
  height: 1px;
  background: var(--gold);
  opacity: 0.7;
}

/* 价格场景 */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 12px;
}
.scenario-card {
  padding: 32px 30px;
  border-radius: var(--radius);
  background: rgba(20, 22, 28, 0.055);
  border: 1px solid rgba(20, 22, 28, 0.12);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}
.scenario-card:hover { transform: translateY(-5px); border-color: var(--gold-line); }
.scenario-card.is-best {
  background: linear-gradient(165deg, rgba(201, 169, 97, 0.1), rgba(201, 169, 97, 0.02));
  border-color: var(--gold-line);
}
.scenario-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  font-family: var(--font-mono);
  margin-bottom: 20px;
}
.scenario-price {
  display: block;
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  color: var(--ivory);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.scenario-card.is-best .scenario-price { color: var(--gold); }
.scenario-sub { font-size: 13px; color: var(--muted-dim); display: block; margin-bottom: 22px; }
.scenario-card ul { display: grid; gap: 10px; padding-top: 20px; border-top: 1px solid rgba(20, 22, 28, 0.11); }
.scenario-card li {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}
.scenario-card li b { font-weight: 400; color: var(--muted-dim); }
.scenario-card li span { font-family: var(--font-mono); color: var(--text); }

/* 举报流程 */
.report-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 8px;
}
.report-step {
  padding: 26px 24px;
  border-radius: var(--radius);
  background: rgba(20, 22, 28, 0.055);
  border: 1px solid rgba(20, 22, 28, 0.12);
}
.report-step span {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 14px;
}
.report-step h3 {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--ivory);
  margin-bottom: 10px;
}
.report-step p { font-size: 13px; line-height: 1.8; color: var(--muted); }

/* 双栏文本块 */
.split-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.split-text h3 {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--ivory);
  margin-bottom: 16px;
}
.split-text p { font-size: 15px; line-height: 1.95; color: var(--muted); }
.split-text ul { display: grid; gap: 12px; margin-top: 20px; }
.split-text ul li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}
.split-text ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.6;
}

/* 404 */
.notfound {
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 160px 0 100px;
}
.notfound-code {
  font-family: var(--font-display);
  font-size: 132px;
  line-height: 1;
  letter-spacing: 0.02em;
  background: linear-gradient(150deg, var(--gold-light), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.notfound h1 {
  font-family: var(--font-display);
  font-size: 30px;
  color: var(--ivory);
  margin: 26px 0 14px;
}
.notfound p { font-size: 15px; color: var(--muted); max-width: 460px; margin: 0 auto; }
.notfound .hero-actions { justify-content: center; }

@media (max-width: 980px) {
  .flow-item { grid-template-columns: 1fr; gap: 18px; }
  .flow-no { font-size: 34px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .report-flow { grid-template-columns: repeat(2, 1fr); }
  .split-text { grid-template-columns: 1fr; gap: 36px; }
}

/* ==========================================================================
   20. 移动端导航（汉堡按钮 + 抽屉）
   ========================================================================== */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-left: 14px;
  flex-shrink: 0;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(20, 22, 28, 0.18);
  background: rgba(20, 22, 28, 0.08);
  color: var(--ivory);
  cursor: pointer;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}
.nav-toggle:hover {
  border-color: var(--gold-line);
  background: rgba(201, 169, 97, 0.1);
}
.nav-toggle:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.nav-toggle-bars { display: grid; gap: 5px; width: 18px; }
.nav-toggle-bars i {
  display: block;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: flex;
  justify-content: flex-end;
  background: rgba(4, 4, 6, 0.62);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.28s var(--ease);
}
.nav-drawer[hidden] { display: none; }
.nav-drawer.is-open { opacity: 1; }
.nav-drawer-panel {
  display: flex;
  flex-direction: column;
  width: min(340px, 88vw);
  height: 100%;
  padding: 22px 24px 32px;
  overflow-y: auto;
  background: linear-gradient(190deg, #ffffff, #f6f1e7);
  border-left: 1px solid var(--gold-line);
  transform: translateX(100%);
  transition: transform 0.34s var(--ease);
}
.nav-drawer.is-open .nav-drawer-panel { transform: none; }
.nav-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.12);
}
.nav-drawer-head .brand img { width: 34px; height: 34px; }
.nav-drawer-head .brand-text strong { font-size: 17px; }
.nav-drawer-close {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid rgba(20, 22, 28, 0.18);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.nav-drawer-close span { position: relative; width: 15px; height: 15px; }
.nav-drawer-close span::before,
.nav-drawer-close span::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1.5px;
  background: currentColor;
}
.nav-drawer-close span::before { transform: rotate(45deg); }
.nav-drawer-close span::after { transform: rotate(-45deg); }
.nav-drawer-close:hover { color: var(--gold); border-color: var(--gold-line); }
.nav-drawer-links { display: grid; padding: 12px 0 4px; }
.nav-drawer-links a {
  padding: 15px 4px;
  font-size: 17px;
  color: var(--text);
  border-bottom: 1px solid rgba(20, 22, 28, 0.1);
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}
.nav-drawer-links a:hover,
.nav-drawer-links a.is-active { color: var(--gold); }
.nav-drawer-links a:hover { padding-left: 10px; }
.nav-drawer-cta { width: 100%; margin-top: 20px; }
.nav-drawer-foot {
  display: grid;
  gap: 8px;
  margin-top: auto;
  padding-top: 26px;
  font-size: 13px;
  color: var(--muted-dim);
}
body.is-nav-open { overflow: hidden; }

/* ==========================================================================
   21. 规则与价格页
   ========================================================================== */
.panel-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--ivory);
}
.discount-head { max-width: 660px; margin-bottom: 38px; }
.discount-head h3 {
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--ivory);
  margin-bottom: 14px;
}
.discount-head p { font-size: 15px; line-height: 1.9; color: var(--muted); }
.discount-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.discount-item {
  padding: 28px 26px;
  border-radius: var(--radius);
  border: 1px solid rgba(20, 22, 28, 0.12);
  background: linear-gradient(170deg, rgba(20, 22, 28, 0.09), rgba(20, 22, 28, 0.04));
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.discount-item:hover {
  transform: translateY(-5px);
  border-color: var(--gold-line);
  box-shadow: var(--shadow-card);
}
.discount-item-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.11);
}
.discount-item-top strong {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--ivory);
}
.discount-item-top span { font-family: var(--font-mono); font-size: 16px; color: var(--gold); }
.discount-item p { margin-top: 16px; font-size: 14px; line-height: 1.9; color: var(--muted); }

.notice-list { display: grid; gap: 14px; }
.notice-list li {
  position: relative;
  padding: 18px 22px 18px 52px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(20, 22, 28, 0.12);
  background: rgba(20, 22, 28, 0.06);
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}
.notice-list li::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 25px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.75;
}

/* ==========================================================================
   22. 纸条详情页
   ========================================================================== */
.paper-card {
  position: relative;
  padding: 44px 46px 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(168deg, #ffffff, #f7f7f4 88%);
  color: #241f18;
  box-shadow: 0 40px 90px -34px rgba(24, 28, 38, 0.26);
  overflow: hidden;
}
.paper-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(201, 169, 97, 0.35);
  pointer-events: none;
}
.paper-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px dashed rgba(36, 31, 24, 0.18);
}
.paper-card-name {
  display: block;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.paper-card-meta { display: block; margin-top: 10px; font-size: 14px; color: #6f6757; }
.paper-card-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: rgba(180, 69, 63, 0.1);
  color: var(--seal-ink);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.paper-card-status svg { width: 14px; height: 14px; }
.paper-card-grid { display: grid; grid-template-columns: 1fr 250px; gap: 34px; margin-top: 26px; }
.paper-card-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 26px;
  align-content: start;
}
.paper-field b {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 500;
  color: #6f6757;
}
.paper-field span { font-size: 15px; color: #2c261d; }
.paper-card-photos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.paper-photo {
  display: grid;
  place-items: center;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(36, 31, 24, 0.22);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(36, 31, 24, 0.72);
}
.paper-photo--1 { background: linear-gradient(160deg, #f3e6d2, #e6d3b6); }
.paper-photo--2 { background: linear-gradient(160deg, #e8e4d8, #d6d0c0); }
.paper-photo--3 { background: linear-gradient(160deg, #f0e2dc, #e0cec7); }
.paper-card-intro {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px dashed rgba(36, 31, 24, 0.18);
  font-size: 15px;
  line-height: 2;
  color: #3f382d;
}
.paper-card-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px dashed rgba(36, 31, 24, 0.18);
}
.paper-card-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: rgba(36, 31, 24, 0.06);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: #6f6757;
}
.paper-card-contact svg { width: 14px; height: 14px; }
.paper-card-note { font-size: 13px; color: #6f6757; }
.paper-card-seal {
  position: absolute;
  right: 34px;
  bottom: 30px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--seal);
  color: #fdf3f2;
  font-family: var(--font-display);
  font-size: 14px;
  box-shadow: 0 8px 18px -8px rgba(180, 69, 63, 0.9);
}

.field-panel {
  padding: 12px 34px 22px;
  border-radius: var(--radius);
  border: 1px solid rgba(20, 22, 28, 0.12);
  background: linear-gradient(170deg, rgba(20, 22, 28, 0.08), rgba(20, 22, 28, 0.035));
}
.field-row {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 26px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(20, 22, 28, 0.11);
}
.field-row:last-child { border-bottom: 0; }
.field-row-name { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.field-row-name b { font-size: 15px; font-weight: 500; color: var(--text); }
.field-badge {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--gold-line);
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.04em;
}
.field-row.is-hidden-field .field-badge {
  border-color: rgba(20, 22, 28, 0.2);
  color: var(--muted-dim);
}
.field-row-detail strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ivory);
}
.field-row-detail span { font-size: 13px; line-height: 1.8; color: var(--muted-dim); }

@media (max-width: 1180px) {
  .site-nav { gap: 26px; }
}

@media (max-width: 980px) {
  .site-header .header-cta { margin-left: auto; }
  .nav-toggle { display: inline-flex; }
  .discount-list { grid-template-columns: 1fr; }
  .paper-card { padding: 32px 26px 30px; }
  .paper-card-grid { grid-template-columns: 1fr; gap: 26px; }
  .paper-card-name { font-size: 28px; }
  .paper-card-photos { max-width: 320px; }
  .field-panel { padding: 8px 22px 16px; }
  .field-row { grid-template-columns: 1fr; gap: 12px; }
}

@media (max-width: 640px) {
  .nav-toggle { margin-left: auto; }
  .notice-list li { padding: 16px 18px 16px 44px; }
  .notice-list li::before { left: 20px; top: 23px; }
  .paper-card-head { flex-direction: column; }
  .paper-card-seal { right: 20px; bottom: 18px; }
}

/* ==========================================================================
   23. 体验流程页（静态交互演示）
   ========================================================================== */
.demo {
  margin-top: 46px;
  padding: 30px 30px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(20, 22, 28, 0.12);
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(201, 169, 97, 0.07), transparent 55%),
    linear-gradient(170deg, rgba(20, 22, 28, 0.09), rgba(20, 22, 28, 0.035));
  box-shadow: var(--shadow-soft);
}

/* 步骤标签 */
.demo-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.12);
}
.demo-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(20, 22, 28, 0.12);
  background: rgba(20, 22, 28, 0.05);
  text-align: left;
  color: var(--muted);
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease), color 0.35s var(--ease);
}
.demo-tab i {
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: normal;
  letter-spacing: 0.08em;
  color: var(--muted-dim);
  transition: color 0.35s var(--ease);
}
.demo-tab span { font-size: 14px; }
.demo-tab:hover { border-color: var(--gold-line); color: var(--text); }
.demo-tab:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.demo-tab.is-active {
  border-color: var(--gold-line);
  background: var(--gold-soft);
  color: var(--ivory);
}
.demo-tab.is-active i { color: var(--gold); }

/* 舞台 */
.demo-stage {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 44px;
  align-items: start;
  padding-top: 34px;
}

/* 手机外框 */
.demo-phone {
  padding: 12px;
  border-radius: 34px;
  border: 1px solid rgba(20, 22, 28, 0.16);
  background: linear-gradient(180deg, #ffffff, #f4eee2);
  box-shadow: 0 40px 90px -40px rgba(24, 28, 38, 0.3), inset 0 1px 0 rgba(20, 22, 28, 0.1);
}
.demo-phone-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px 12px;
}
.demo-phone-bar span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(20, 22, 28, 0.2);
}
.demo-phone-bar em {
  margin-left: auto;
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.1em;
  color: var(--muted-dim);
}
.demo-screen {
  position: relative;
  min-height: 432px;
  padding: 20px 18px;
  border-radius: 24px;
  border: 1px solid rgba(20, 22, 28, 0.11);
  background: linear-gradient(180deg, #ffffff, #f4eee2);
  overflow: hidden;
}
.demo-screen-item { display: none; animation: demo-fade 0.45s var(--ease); }
.demo-screen-item.is-active { display: block; }
@keyframes demo-fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
.demo-screen-head { padding-bottom: 16px; border-bottom: 1px dashed rgba(20, 22, 28, 0.16); }
.demo-screen-head strong {
  display: block;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ivory);
}
.demo-screen-head span { display: block; margin-top: 6px; font-size: 12px; color: var(--muted-dim); }
.demo-screen-foot {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed rgba(20, 22, 28, 0.16);
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted-dim);
}

/* 步骤 01：纸条池 */
.demo-pool { display: grid; gap: 12px; padding-top: 18px; }
.demo-pool-card {
  position: relative;
  padding: 18px 18px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(20, 22, 28, 0.13);
  background: linear-gradient(160deg, rgba(201, 169, 97, 0.09), rgba(20, 22, 28, 0.05));
}
.demo-pool-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--ivory);
}
.demo-pool-card span { display: block; margin-top: 6px; font-size: 12px; color: var(--muted-dim); }
.demo-pool-card em {
  position: absolute;
  right: 16px;
  top: 18px;
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* 步骤 02：筛选 */
.demo-filters { display: grid; gap: 18px; padding-top: 18px; }
.demo-filter-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.demo-filter-label i { font-style: normal; font-size: 10px; color: var(--gold); }
.demo-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.demo-chip {
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(20, 22, 28, 0.15);
  background: rgba(20, 22, 28, 0.05);
  font-size: 12px;
  color: var(--muted);
}
.demo-chip.is-on {
  border-color: var(--gold-line);
  background: var(--gold-soft);
  color: var(--gold-light);
}

/* 步骤 03：填写纸条 */
.demo-form { padding-top: 18px; }
.demo-form-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(20, 22, 28, 0.1);
}
.demo-form-label { font-size: 12px; color: var(--muted-dim); white-space: nowrap; }
.demo-form-value { font-size: 13px; color: var(--text); text-align: right; }
.demo-form-value i {
  display: block;
  margin-top: 2px;
  font-style: normal;
  font-size: 10px;
  color: var(--muted-dim);
}
.demo-form-intro { padding-top: 14px; }
.demo-form-intro p { margin-top: 8px; font-size: 12px; line-height: 1.9; color: var(--muted); }

/* 步骤 04：抽取解锁 */
.demo-unlock { padding-top: 18px; }
.demo-price { display: flex; align-items: baseline; gap: 10px; }
.demo-price strong { font-family: var(--font-mono); font-size: 32px; color: var(--gold); }
.demo-price span { font-size: 12px; color: var(--muted-dim); }
.demo-breakdown { display: grid; gap: 10px; margin-top: 18px; }
.demo-breakdown li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}
.demo-breakdown b { font-family: var(--font-mono); font-weight: 400; color: var(--gold-light); }
.demo-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(20, 22, 28, 0.13);
  font-size: 13px;
  color: var(--text);
}
.demo-total b { font-family: var(--font-mono); font-size: 18px; color: var(--gold); }
.demo-contact {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--gold-line);
  background: rgba(201, 169, 97, 0.06);
}
.demo-contact span { display: block; font-size: 11px; letter-spacing: 0.06em; color: var(--muted-dim); }
.demo-contact b {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ivory);
}
.demo-contact b.is-masked { letter-spacing: 0.12em; color: var(--gold-light); }
.demo-contact em { display: block; margin-top: 6px; font-style: normal; font-size: 11px; color: var(--muted-dim); }

/* 文案列 */
.demo-copy { position: relative; }
.demo-copy-item { display: none; }
.demo-copy-item.is-active { display: block; animation: demo-fade 0.45s var(--ease); }
.demo-step-no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}
.demo-copy-item h3 {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  color: var(--ivory);
}
.demo-copy-item > p { font-size: 15px; line-height: 1.95; color: var(--muted); }
.demo-copy .flow-points { margin-top: 22px; }

/* 控制条 */
.demo-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid rgba(20, 22, 28, 0.12);
}
.demo-progress {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--muted-dim);
}
.demo-controls [data-demo-next] { margin-left: auto; }

/* 提示条 */
.demo-notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 26px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gold-line);
  background: rgba(201, 169, 97, 0.06);
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}
.demo-notice svg { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 3px; color: var(--gold); }

@media (max-width: 1180px) {
  .demo-stage { grid-template-columns: 292px 1fr; gap: 32px; }
}

@media (max-width: 980px) {
  .demo { padding: 24px 20px 20px; }
  .demo-tabs { grid-template-columns: repeat(2, 1fr); }
  .demo-stage { grid-template-columns: 1fr; gap: 30px; }
  .demo-phone { max-width: 340px; margin: 0 auto; }
  .demo-copy-item h3 { font-size: 26px; }
}

@media (max-width: 640px) {
  .demo-tab { padding: 12px; gap: 8px; }
  .demo-tab span { font-size: 13px; }
  .demo-screen { min-height: 0; }
  .demo-copy-item h3 { font-size: 23px; }
  .demo-controls { flex-wrap: wrap; gap: 12px; }
  .demo-controls [data-demo-next] { margin-left: 0; }
  .demo-notice { padding: 14px 16px; }
}

/* ==========================================================================
   24. 分享落地页（share.html）
   ========================================================================== */
.share-note {
  padding: 38px 40px;
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--gold-soft), rgba(201, 169, 97, 0.03));
  border: 1px solid var(--gold-line);
}
.share-note-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.share-note-head svg { width: 22px; height: 22px; color: var(--gold); }
.share-note-head h2 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--ivory);
}
.share-note > p { font-size: 15px; line-height: 1.95; color: var(--muted); }
.share-note ul { display: grid; gap: 14px; margin-top: 24px; }
.share-note li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}
.share-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.65;
}
.share-note-foot {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid rgba(20, 22, 28, 0.13);
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted-dim);
}

@media (max-width: 640px) {
  .share-note { padding: 28px 22px; }
  .share-note-head h2 { font-size: 18px; }
}

/* ==========================================================================
   25. 用户声音（首页；只展示经授权的真实反馈，禁止编造）
   ========================================================================== */
.voice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.voice-card {
  padding: 30px 28px 24px;
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--gold-soft), rgba(201, 169, 97, 0.02));
  border: 1px solid var(--gold-line);
}
.voice-quote {
  font-size: 15px;
  line-height: 1.95;
  color: var(--ivory);
}
.voice-meta {
  display: grid;
  gap: 4px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(20, 22, 28, 0.13);
}
.voice-meta-main {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold);
}
.voice-meta-note {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted-dim);
}

.voice-empty {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 32px 34px;
  border-radius: var(--radius);
  border: 1px dashed var(--gold-line);
  background: rgba(20, 22, 28, 0.05);
}
.voice-empty-mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--gold-line);
  color: var(--gold);
}
.voice-empty-mark svg { width: 20px; height: 20px; }
.voice-empty h3 {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ivory);
  margin-bottom: 10px;
}
.voice-empty p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}

.voice-principles { display: grid; gap: 12px; margin-top: 30px; }
.voice-principles li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}
.voice-principles li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.65;
}
.voice-foot {
  margin-top: 26px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted-dim);
}

@media (max-width: 640px) {
  .voice-card { padding: 26px 22px 20px; }
  .voice-empty { flex-direction: column; gap: 16px; padding: 26px 22px; }
}

/* ==========================================================================
   26. 打印样式（协议 / 规则等长文页面为主）
   ========================================================================== */
@media print {
  @page { margin: 14mm; }

  html, body { background: #fff !important; }

  .page-ambient,
  .site-header,
  .site-footer,
  .hero-scroll,
  .nav-drawer,
  .nav-toggle,
  .skip-link,
  .cta-band,
  .qr-card,
  .demo,
  .to-top,
  .noscript-bar { display: none !important; }

  body, body * {
    color: #111 !important;
    background: none !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  /* 渐变文字在打印时改为纯色，避免 background 被清空后变成透明 */
  .hero-title em,
  .flow-no,
  .notfound-code {
    color: #111 !important;
    -webkit-text-fill-color: #111 !important;
  }

  a { text-decoration: underline; }
  img { max-width: 100% !important; }

  .container { max-width: none; padding: 0; }
  .reveal { opacity: 1 !important; transform: none !important; }

  .prose-layout { grid-template-columns: 1fr; gap: 0; }
  .prose { max-width: none; }
  .prose-toc { position: static; margin-bottom: 24px; }
  .prose section { page-break-inside: avoid; }
  .prose h2,
  .prose h3,
  h1, h2, h3 { page-break-after: avoid; }
}

/* ==========================================================================
   27. 无 JavaScript 回退（noscript）
   仅当脚本不可用时渲染：给出提示，并保留一条可用的站内导航。
   ========================================================================== */
.noscript-bar {
  position: relative;
  z-index: 5;
  padding: 104px 0 22px;
  background: var(--ink-800);
  border-bottom: 1px solid var(--gold-line);
  color: var(--ivory);
  font-size: 14px;
  line-height: 1.8;
}
.noscript-bar p { margin: 0 0 12px; color: var(--muted); }
.noscript-bar strong { color: var(--gold-light); }
.noscript-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.noscript-links a {
  color: var(--gold);
  border-bottom: 1px solid var(--gold-line);
}
.noscript-links a:hover { border-bottom-color: var(--gold); }

@media (max-width: 640px) {
  .noscript-bar { padding-top: 84px; }
  .noscript-links { gap: 6px 16px; }
}

/* ==========================================================================
   28. 回到顶部（长文页：协议 / 规则 / FAQ）
   ========================================================================== */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--gold-line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  color: var(--gold);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s var(--ease), border-color 0.3s var(--ease), color 0.3s var(--ease);
}
.to-top.is-shown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top:hover {
  border-color: var(--gold);
  color: var(--gold-light);
}
.to-top svg { width: 18px; height: 18px; }

@media (max-width: 640px) {
  .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  .to-top { transition: none; transform: none; }
}

/* ==========================================================================
   29. 在线体验：可交互四步流程（experience.html）
   纯本地演示，不涉及任何支付模块。
   ========================================================================== */
.flow-section { padding-top: 96px; }

.flow-app {
  padding: 40px;
  border: 1px solid rgba(201, 169, 97, 0.16);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(720px 320px at 12% -10%, rgba(201, 169, 97, 0.08), transparent 68%),
    linear-gradient(180deg, rgba(20, 22, 28, 0.06), rgba(20, 22, 28, 0));
  box-shadow: var(--shadow-card);
}

/* 步骤指示 */
.flow-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 34px;
}
.flow-track-item button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(20, 22, 28, 0.13);
  border-radius: var(--radius-sm);
  background: rgba(20, 22, 28, 0.05);
  color: var(--muted);
  font-size: 13px;
  text-align: left;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.flow-track-item button:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.flow-track-item button:disabled { cursor: default; opacity: 0.55; }
.flow-track-item i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(20, 22, 28, 0.11);
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: normal;
  color: var(--muted);
}
.flow-track-item.is-active button {
  border-color: var(--gold-line);
  background: var(--gold-soft);
  color: var(--ivory);
}
.flow-track-item.is-active i { background: var(--gold); color: #17130a; }
.flow-track-item.is-done button { border-color: rgba(201, 169, 97, 0.3); color: var(--gold-light); }
.flow-track-item.is-done i { background: rgba(201, 169, 97, 0.22); color: var(--gold-light); }

/* 舞台 */
.flow-stage { min-height: 320px; }

.flow-head { max-width: 640px; margin-bottom: 30px; }
.flow-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}
.flow-head h3 {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-size: 30px;
  color: var(--ivory);
}
.flow-head p { font-size: 15px; line-height: 1.9; color: var(--muted); }

/* 第一步：性别池 */
.flow-pools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.flow-pool {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 30px 28px;
  border: 1px solid rgba(20, 22, 28, 0.13);
  border-radius: var(--radius);
  background: linear-gradient(168deg, rgba(20, 22, 28, 0.08), rgba(20, 22, 28, 0.03));
  color: var(--text);
  text-align: left;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.flow-pool:hover {
  transform: translateY(-4px);
  border-color: var(--gold-line);
  box-shadow: var(--shadow-card);
}
.flow-pool:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.flow-pool.is-on { border-color: var(--gold); box-shadow: var(--shadow-gold); }
.flow-pool-tag {
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  background: rgba(180, 69, 63, 0.16);
  color: #e8a09c;
  font-size: 12px;
  letter-spacing: 0.08em;
}
.flow-pool strong { font-family: var(--font-display); font-size: 24px; color: var(--ivory); }
.flow-pool-desc { font-size: 13px; color: var(--muted-dim); }
.flow-pool-count {
  margin-top: 10px;
  padding-top: 14px;
  border-top: 1px solid rgba(20, 22, 28, 0.12);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold);
}
.flow-hint { margin-top: 22px; font-size: 13px; color: var(--muted-dim); }

/* 第二步：筛选 */
.flow-filters { display: grid; gap: 24px; }
.flow-filter-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.flow-filter-name i { font-style: normal; font-size: 11px; color: var(--gold); }
.flow-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.flow-chip {
  padding: 9px 16px;
  border: 1px solid rgba(20, 22, 28, 0.15);
  border-radius: var(--radius-pill);
  background: rgba(20, 22, 28, 0.05);
  font-size: 13px;
  color: var(--muted);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background-color 0.25s var(--ease);
}
.flow-chip:hover { border-color: var(--gold-line); color: var(--text); }
.flow-chip:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.flow-chip.is-on {
  border-color: var(--gold-line);
  background: var(--gold-soft);
  color: var(--gold-light);
}
.flow-summary {
  margin-top: 28px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--gold-line);
  background: rgba(201, 169, 97, 0.05);
  font-size: 14px;
  color: var(--text);
}

/* 操作按钮 */
.flow-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(20, 22, 28, 0.12);
}

/* 第三步：投入纸条 */
.flow-subtrack {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.flow-subtrack-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted-dim);
}
.flow-subtrack-item + .flow-subtrack-item::before {
  content: "";
  width: 26px;
  height: 1px;
  background: rgba(20, 22, 28, 0.18);
}
.flow-subtrack-item i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(20, 22, 28, 0.11);
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: normal;
}
.flow-subtrack-item.is-active { color: var(--gold); }
.flow-subtrack-item.is-active i { background: var(--gold); color: #17130a; }
.flow-subtrack-item.is-done { color: var(--gold-light); }
.flow-subtrack-item.is-done i { background: rgba(201, 169, 97, 0.22); color: var(--gold-light); }

.flow-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 22px;
}
.flow-field { display: flex; flex-direction: column; gap: 8px; }
.flow-field-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
}
.flow-count { font-family: var(--font-mono); font-style: normal; font-size: 12px; color: var(--muted-dim); }
.flow-field input,
.flow-field select,
.flow-field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid rgba(20, 22, 28, 0.16);
  border-radius: var(--radius-sm);
  background: rgba(20, 22, 28, 0.07);
  color: var(--ivory);
  font-size: 14px;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}
.flow-field input::placeholder,
.flow-field textarea::placeholder { color: var(--muted-dim); }
.flow-field input:focus,
.flow-field select:focus,
.flow-field textarea:focus {
  outline: none;
  border-color: var(--gold-line);
  background: rgba(201, 169, 97, 0.06);
}
.flow-field select { appearance: none; -webkit-appearance: none; }
.flow-field select option { background: var(--ink-700); color: var(--text); }
.flow-field textarea { min-height: 132px; resize: vertical; line-height: 1.85; }
.flow-form > .flow-field:has(textarea),
.flow-form > .flow-photos { grid-column: 1 / -1; }

.flow-photos { display: flex; flex-direction: column; gap: 12px; }
.flow-photo-slots { display: flex; flex-wrap: wrap; gap: 12px; }
.flow-photo {
  min-width: 120px;
  padding: 26px 16px;
  border: 1px dashed rgba(20, 22, 28, 0.22);
  border-radius: var(--radius-sm);
  background: rgba(20, 22, 28, 0.05);
  color: var(--muted-dim);
  font-size: 12px;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background-color 0.25s var(--ease);
}
.flow-photo:hover { border-color: var(--gold-line); color: var(--text); }
.flow-photo:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.flow-photo.is-on {
  border-style: solid;
  border-color: var(--gold-line);
  background: var(--gold-soft);
  color: var(--gold-light);
}

.flow-confirm {
  border: 1px solid rgba(20, 22, 28, 0.13);
  border-radius: var(--radius);
  background: rgba(20, 22, 28, 0.05);
  overflow: hidden;
}
.flow-confirm-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 22px;
  border-bottom: 1px solid rgba(20, 22, 28, 0.1);
  font-size: 14px;
}
.flow-confirm-row:last-child { border-bottom: 0; }
.flow-confirm-row b { font-weight: 400; color: var(--muted-dim); white-space: nowrap; }
.flow-confirm-row span { color: var(--text); text-align: right; }

.flow-tip {
  margin-top: 20px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(20, 22, 28, 0.13);
  background: rgba(20, 22, 28, 0.05);
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}
.flow-error {
  margin-top: 18px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(180, 69, 63, 0.4);
  background: rgba(180, 69, 63, 0.12);
  font-size: 13px;
  color: #f0b5b1;
}

/* 第四步：抽取 */
.flow-rule-list {
  display: grid;
  gap: 10px;
  padding: 20px 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(20, 22, 28, 0.13);
  background: rgba(20, 22, 28, 0.05);
}
.flow-rule-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}
.flow-rule-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}
.flow-empty {
  margin-top: 26px;
  padding: 18px 22px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(180, 69, 63, 0.4);
  background: rgba(180, 69, 63, 0.08);
  font-size: 14px;
  color: #f0b5b1;
}

.flow-result {
  margin-top: 28px;
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--gold-line);
  background:
    radial-gradient(420px 200px at 90% -20%, rgba(201, 169, 97, 0.14), transparent 70%),
    linear-gradient(180deg, rgba(20, 22, 28, 0.075), rgba(20, 22, 28, 0.03));
}
.flow-result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(20, 22, 28, 0.14);
}
.flow-result-congrats {
  margin-bottom: 16px;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.flow-result-name { font-family: var(--font-display); font-size: 26px; color: var(--ivory); }
.flow-result-tag {
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(180, 69, 63, 0.16);
  color: #e8a09c;
  font-size: 12px;
}

.flow-tape-rows {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px 20px;
  margin-top: 18px;
}
.flow-tape-row { display: flex; flex-direction: column; gap: 2px; }
.flow-tape-row b { font-weight: 400; font-size: 12px; color: var(--muted-dim); }
.flow-tape-row span { font-size: 14px; color: var(--text); }

/* 查看纸条 */
.flow-paper {
  position: relative;
  padding: 34px;
  border-radius: var(--radius);
  border: 1px solid rgba(201, 169, 97, 0.3);
  background: linear-gradient(168deg, #ffffff, #f7f7f4 88%);
  color: #241f18;
  box-shadow: var(--shadow-soft);
}
.flow-paper-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(36, 31, 24, 0.18);
}
.flow-paper-name {
  display: block;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  color: #241f18;
}
.flow-paper-meta { display: block; margin-top: 6px; font-size: 13px; color: #6f6757; }
.flow-paper-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  font-size: 12px;
  color: #6f6757;
}
.flow-paper-status svg { width: 16px; height: 16px; color: #9c7c3c; }
.flow-paper .flow-tape-row b { color: #6f6757; }
.flow-paper .flow-tape-row span { color: #241f18; }
.flow-paper-intro {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px dashed rgba(36, 31, 24, 0.18);
  font-size: 15px;
  line-height: 1.95;
  color: #3a342a;
}

.flow-contact {
  margin-top: 22px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(156, 124, 60, 0.5);
  background: rgba(201, 169, 97, 0.14);
}
.flow-contact-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #6f6757;
}
.flow-contact b {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.08em;
  color: #241f18;
}
.flow-contact em { display: block; margin-top: 8px; font-style: normal; font-size: 12px; color: #6f6757; }
.flow-contact .btn { margin-top: 14px; }
.flow-contact .btn-ghost {
  border-color: rgba(156, 124, 60, 0.5);
  background: rgba(255, 255, 255, 0.5);
  color: #4a3f2c;
}
.flow-contact .btn-ghost:hover { background: rgba(255, 255, 255, 0.85); }
.flow-contact.is-open b { color: #9c3b36; }

.flow-paper .flow-actions { border-top-color: rgba(36, 31, 24, 0.14); }
.flow-paper .btn-ghost {
  border-color: rgba(156, 124, 60, 0.45);
  background: rgba(255, 255, 255, 0.5);
  color: #4a3f2c;
}
.flow-paper .btn-ghost:hover { background: rgba(255, 255, 255, 0.85); }
.flow-paper .btn-ghost:disabled { opacity: 0.6; cursor: default; transform: none; }
.flow-report-note {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.85;
  color: #6f6757;
}

@media (max-width: 980px) {
  .flow-app { padding: 28px 22px; }
  .flow-track { grid-template-columns: repeat(2, 1fr); }
  .flow-head h3 { font-size: 26px; }
  .flow-form { grid-template-columns: 1fr; }
  .flow-tape-rows { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .flow-section { padding-top: 72px; }
  .flow-app { padding: 22px 16px; }
  .flow-pools { grid-template-columns: 1fr; }
  .flow-head h3 { font-size: 23px; }
  .flow-paper { padding: 24px 20px; }
  .flow-tape-rows { grid-template-columns: 1fr; }
  .flow-actions { gap: 10px; }
  .flow-actions .btn { flex: 1 1 auto; }
}