/* ─────────────────────────────────────────────────────────────
   云遇 · yunyu.life
   纸与光 / Paper & Light —— 静态官网设计系统
   暖纸底 · 暖棕字 · 陶土橙唯一强调 · 发丝线代替阴影
   ───────────────────────────────────────────────────────────── */

:root {
  /* 色板（与小程序同源，官网底色更沉一档） */
  --bg: #fbf4e9;
  --bg-deep: #f4e9d9;
  --card: #fffcf5;
  --ink: #3b2e26;
  --ink-soft: #4b3a2f;
  --muted: #8c7864;
  --faint: #b7a48f;
  --accent: #c85f3e;
  --accent-soft: #d96f4e;
  --amber: #b8832f;
  --hairline: rgba(75, 58, 47, 0.14);
  --hairline-soft: rgba(75, 58, 47, 0.07);
  --danger: #a83a2c;

  /* 字体 */
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;

  /* 版心与节奏 */
  --max: 1140px;
  --gutter: clamp(20px, 4.2vw, 56px);
  --section-y: clamp(72px, 11vw, 148px);
  --radius: 3px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.015em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 纸张颗粒：极淡，只在放大时可见 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.27;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.055'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, opacity 0.25s ease;
}

::selection {
  background: rgba(200, 95, 62, 0.18);
  color: var(--ink);
}

/* ── 排版基元 ───────────────────────────── */

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 1;
}

.serif { font-family: var(--serif); }

.kicker {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.kicker .num {
  font-family: var(--serif);
  color: var(--amber);
  letter-spacing: 0.08em;
  margin-right: 0.9em;
  font-size: 12px;
}

.display {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.28;
  letter-spacing: 0.01em;
  text-wrap: balance;
  margin: 0;
}

.h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(27px, 3.4vw, 42px);
  line-height: 1.42;
  color: var(--ink);
  letter-spacing: 0.01em;
  text-wrap: balance;
  margin: 0;
}

.lede {
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 2.05;
  color: var(--ink-soft);
  max-width: 40em;
}

p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }

.muted { color: var(--muted); }
.accent { color: var(--accent); }
.amber { color: var(--amber); }

.rule {
  height: 1px;
  background: var(--hairline);
  border: 0;
  margin: 0;
}

/* ── 顶部导航 ───────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 244, 233, 0.86);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--hairline-soft);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: 70px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 50%;
}

.brand-name {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.12em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.6vw, 38px);
  font-size: 13.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.nav-links a { position: relative; padding: 4px 0; }
.nav-links a:hover { color: var(--ink); }
.nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
}

.nav-cta {
  flex: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 9px 20px;
  background: rgba(255, 252, 245, 0.6);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.nav-cta:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 0;
  background: none;
  cursor: pointer;
  color: var(--ink);
}

.nav-toggle span {
  display: block;
  width: 19px;
  height: 1px;
  background: currentColor;
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 19px;
  height: 1px;
  background: currentColor;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ── 首屏 ───────────────────────────────── */

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline-soft);
  background: linear-gradient(178deg, #f8ecd8 0%, #f7e6d0 38%, #f3ddc6 100%);
}

.hero-sky {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-sky svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-inner {
  position: relative;
  z-index: 2;
  min-height: clamp(560px, 82vh, 780px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: clamp(64px, 9vh, 110px);
  padding-bottom: clamp(56px, 8vh, 96px);
}

.hero-kicker { margin-bottom: clamp(26px, 3.4vh, 40px); }

.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  font-size: clamp(42px, 7.2vw, 92px);
  line-height: 1.24;
  letter-spacing: 0.015em;
  margin: 0;
  text-wrap: balance;
  max-width: 12em;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  margin-top: clamp(28px, 3.6vh, 42px);
  max-width: 33em;
  font-size: clamp(15px, 1.4vw, 17.5px);
  line-height: 2.1;
  color: #6a5746;
}

.hero-meta {
  margin-top: clamp(36px, 5vh, 58px);
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  row-gap: 8px;
}

.hero-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--faint);
}

.hero-vertical {
  position: absolute;
  right: var(--gutter);
  bottom: clamp(56px, 9vh, 104px);
  writing-mode: vertical-rl;
  font-size: 10.5px;
  letter-spacing: 0.42em;
  color: rgba(75, 58, 47, 0.42);
  z-index: 2;
}

/* ── 通用区块 ───────────────────────────── */

.section { padding: var(--section-y) 0; position: relative; }
.section--tight { padding: clamp(56px, 8vw, 104px) 0; }
.section--deep { background: var(--bg-deep); }
.section--paper { background: var(--card); }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 26px;
  border-top: 1px solid var(--hairline);
  padding-top: 22px;
  margin-bottom: clamp(38px, 5vw, 64px);
}

.section-head .kicker { flex: none; }

.section-head .h2 { flex: 1; }

.section-head--center {
  display: block;
  text-align: center;
  border-top: 0;
  padding-top: 0;
}
.section-head--center .kicker { margin-bottom: 20px; }

/* ── 三步 ───────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.step {
  padding: 4px clamp(20px, 2.6vw, 40px) 0;
  border-left: 1px solid var(--hairline);
}
.step:first-child { border-left: 0; padding-left: 0; }
.step:last-child { padding-right: 0; }

.step-num {
  font-family: var(--serif);
  font-size: clamp(44px, 5vw, 64px);
  color: var(--amber);
  line-height: 1;
  letter-spacing: 0.02em;
  margin-bottom: 22px;
  display: block;
}

.step h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 12px;
  letter-spacing: 0.04em;
}

.step p {
  font-size: 14.5px;
  line-height: 2;
  color: var(--muted);
  margin: 0;
  max-width: 26em;
}

.steps-note {
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ── 红线 ───────────────────────────────── */

.redlines {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 clamp(32px, 5vw, 88px);
}

.redline {
  padding: 30px 0;
  border-top: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: baseline;
}

.redline-index {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--faint);
}

.redline h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
  letter-spacing: 0.06em;
}

.redline p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--muted);
}

/* ── 双轨经济 ───────────────────────────── */

.economy {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: stretch;
}

.economy-divider { background: var(--hairline); }

.coin-kind .kicker { display: block; margin-bottom: 18px; }

.coin-kind h3 {
  font-family: var(--serif);
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 14px;
  letter-spacing: 0.08em;
}

.coin-kind .desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 2;
  margin-bottom: 24px;
}

.coin-kind ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hairline-soft);
}

.coin-kind li {
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline-soft);
  font-size: 14px;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.coin-kind li span:last-child { color: var(--muted); }

.economy-foot {
  margin-top: clamp(36px, 4vw, 52px);
  font-family: var(--serif);
  font-size: clamp(17px, 1.7vw, 21px);
  color: var(--ink);
  letter-spacing: 0.06em;
  line-height: 1.9;
  border-left: 2px solid var(--amber);
  padding-left: 22px;
}

/* ── 心愿样本 ───────────────────────────── */

.samples {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 30px);
}

.sample {
  background: var(--card);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  padding: clamp(24px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s ease, border-color 0.35s ease;
}

.sample:hover {
  transform: translateY(-3px);
  border-color: var(--hairline);
}

.sample-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-bottom: 22px;
}

.sample-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-soft);
  flex: none;
}

/* 标题区固定两行高度，让三张卡的引文从同一水平线开始 */
.sample h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 16px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  min-height: 3.1em;
}

.sample blockquote {
  margin: 0;
  font-size: 14px;
  line-height: 2;
  color: var(--muted);
  border-left: 1px solid var(--hairline);
  padding-left: 16px;
  flex: 1;
}

.sample-foot {
  margin-top: auto;
  padding-top: 24px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--faint);
}

.samples-caption {
  margin-top: 26px;
  font-size: 12.5px;
  color: var(--faint);
  letter-spacing: 0.04em;
}

/* ── 名字 ───────────────────────────────── */

.name-block {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(32px, 6vw, 90px);
  align-items: center;
}

.name-glyph {
  font-family: var(--serif);
  font-size: clamp(120px, 21vw, 270px);
  line-height: 1;
  color: var(--ink);
  text-align: center;
  letter-spacing: 0;
  user-select: none;
  position: relative;
}

.name-glyph span {
  display: inline-block;
  color: rgba(75, 58, 47, 0.09);
}

.name-glyph .sun {
  position: absolute;
  width: clamp(56px, 8vw, 104px);
  height: clamp(56px, 8vw, 104px);
  border-radius: 50%;
  background: radial-gradient(circle at 38% 34%, rgba(229, 164, 77, 0.5), rgba(200, 95, 62, 0.18) 62%, transparent 72%);
  right: 1%;
  top: 34%;
  filter: blur(1px);
}

.name-copy p {
  font-size: 15.5px;
  line-height: 2.15;
  color: var(--ink-soft);
}

.name-copy p strong {
  font-weight: 600;
  color: var(--ink);
  font-family: var(--serif);
  letter-spacing: 0.08em;
}

.name-copy .quote {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.95;
  color: var(--ink);
  letter-spacing: 0.04em;
}

/* ── 结尾行动 ───────────────────────────── */

.cta {
  border-top: 1px solid var(--hairline);
  padding-top: clamp(48px, 6vw, 76px);
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.cta h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.4;
  color: var(--ink);
  margin: 0 0 20px;
  letter-spacing: 0.02em;
}

.cta p {
  font-size: 15px;
  color: var(--muted);
  line-height: 2.05;
  max-width: 30em;
}

.cta-actions {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  letter-spacing: 0.08em;
  padding: 13px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.28s ease, color 0.28s ease, border-color 0.28s ease;
}

.btn--ink {
  background: var(--ink);
  color: #fbf4e9;
}
.btn--ink:hover { background: #2c211b; color: #fdf8ef; }

.btn--ghost {
  border-color: var(--hairline);
  color: var(--ink);
}
.btn--ghost:hover { border-color: var(--ink); }

.miniapp-card {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--card);
  padding: 26px;
  text-align: center;
}

.download-cards {
  display: grid;
  gap: 16px;
}

/* 小程序卡片在下载区里略微放大，避免内容挤在中央 */
.download-cards .miniapp-card {
  padding: 30px 26px 26px;
}
.download-cards .miniapp-frame {
  max-width: 176px;
}

.download-meta {
  margin-top: 20px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--faint);
}

.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  border-style: dashed;
}
.btn[aria-disabled="true"]:hover {
  border-color: var(--hairline);
}

.miniapp-frame {
  aspect-ratio: 1;
  max-width: 148px;
  margin: 0 auto 16px;
  border: 1px dashed var(--hairline);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.14em;
  background:
    linear-gradient(135deg, rgba(184, 131, 47, 0.05), transparent 60%),
    var(--card);
}

.miniapp-frame .glyph {
  font-family: var(--serif);
  font-size: 30px;
  color: var(--amber);
  opacity: 0.6;
}

.miniapp-name {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
  letter-spacing: 0.14em;
  margin-bottom: 4px;
}

.miniapp-hint { font-size: 12px; color: var(--muted); letter-spacing: 0.04em; }

/* ── 页脚 ───────────────────────────────── */

.footer {
  border-top: 1px solid var(--hairline);
  padding: clamp(52px, 6vw, 80px) 0 32px;
  background: var(--bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: clamp(28px, 4vw, 60px);
  padding-bottom: clamp(40px, 5vw, 64px);
}

.footer-brand .brand { margin-bottom: 18px; }

.footer-brand p {
  font-size: 13px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 20em;
  margin: 0;
}

.footer-col h4 {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 500;
  margin: 0 0 18px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li { margin-bottom: 11px; }

.footer-col a {
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.03em;
}
.footer-col a:hover { color: var(--ink); }

.footer-bottom {
  border-top: 1px solid var(--hairline-soft);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--faint);
}

.footer-bottom .links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-bottom a:hover { color: var(--ink-soft); }

/* ── 内页头 ─────────────────────────────── */

.page-head {
  padding: clamp(56px, 8vw, 110px) 0 clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--hairline);
}

.page-head .kicker { display: block; margin-bottom: 24px; }

.page-head h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(36px, 5.4vw, 66px);
  line-height: 1.3;
  color: var(--ink);
  margin: 0;
  letter-spacing: 0.02em;
}

.page-head .lede {
  margin-top: 24px;
  color: var(--muted);
  font-size: 15.5px;
}

/* ── 长文（关于 / 法律） ────────────────── */

.prose {
  max-width: 720px;
  margin: 0 auto;
  font-size: 15.5px;
  line-height: 2.15;
  color: var(--ink-soft);
}

.prose h2 {
  font-family: var(--serif);
  font-size: clamp(22px, 2.3vw, 27px);
  font-weight: 600;
  color: var(--ink);
  margin: 2.6em 0 0.9em;
  letter-spacing: 0.04em;
  padding-top: 1.4em;
  border-top: 1px solid var(--hairline-soft);
}
.prose h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }

.prose h3 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 2em 0 0.6em;
  letter-spacing: 0.04em;
}

.prose p { margin: 0 0 1.25em; }

.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.4em; }
.prose li { margin-bottom: 0.55em; }

.prose a {
  color: var(--accent);
  border-bottom: 1px solid rgba(200, 95, 62, 0.28);
}
.prose a:hover { border-bottom-color: var(--accent); }

.prose blockquote {
  margin: 1.8em 0;
  padding: 18px 22px;
  background: rgba(184, 131, 47, 0.06);
  border-left: 2px solid var(--amber);
  font-size: 13.5px;
  line-height: 2;
  color: var(--muted);
}

.prose blockquote p:last-child { margin-bottom: 0; }

.prose strong { color: var(--ink); font-weight: 600; }

.prose hr {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 2.4em 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 13.5px;
}
.prose th, .prose td {
  border: 1px solid var(--hairline);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.prose th { background: rgba(184, 131, 47, 0.06); font-weight: 600; color: var(--ink); }

/* 法律页：草案提示 */
.draft-note {
  max-width: 720px;
  margin: 0 auto clamp(32px, 4vw, 48px);
  border: 1px solid rgba(168, 58, 44, 0.25);
  background: rgba(168, 58, 44, 0.035);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 12.5px;
  line-height: 1.9;
  color: #8a3d32;
  letter-spacing: 0.03em;
}

.legal-toc {
  max-width: 720px;
  margin: 0 auto clamp(36px, 4vw, 56px);
  padding: 22px 26px;
  border: 1px solid var(--hairline-soft);
  background: var(--card);
  border-radius: var(--radius);
}

.legal-toc h4 {
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--faint);
  margin: 0 0 14px;
  font-weight: 500;
}

.legal-toc ol {
  margin: 0;
  padding-left: 1.2em;
  font-size: 13px;
  line-height: 2;
  color: var(--muted);
  columns: 2;
  column-gap: 40px;
}

.legal-toc a:hover { color: var(--ink); }

/* ── 故事页 ─────────────────────────────── */

.stories {
  max-width: 860px;
  margin: 0 auto;
}

.story {
  padding: clamp(40px, 5vw, 64px) 0;
  border-bottom: 1px solid var(--hairline);
}
.story:first-child { padding-top: 0; }
.story:last-child { border-bottom: 0; }

.story-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.story-head h2 {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  color: var(--ink);
  margin: 0;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.story-meta {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--faint);
  white-space: nowrap;
}

.story-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.story-quote {
  margin: 0;
  padding: 4px 0 4px 22px;
  border-left: 2px solid var(--amber);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 2.05;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.story-note {
  font-size: 14.5px;
  line-height: 2.05;
  color: var(--muted);
}

.story-walker {
  font-size: 12.5px;
  color: var(--faint);
  letter-spacing: 0.04em;
  margin-top: 6px;
}

/* ── 合作页 ─────────────────────────────── */

.collab-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 clamp(32px, 5vw, 80px);
}

.collab {
  border-top: 1px solid var(--hairline);
  padding: 30px 0;
}

.collab h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 10px;
  letter-spacing: 0.05em;
}

.collab p {
  font-size: 14.5px;
  line-height: 2;
  color: var(--muted);
  margin: 0;
}

.contact-block {
  margin-top: clamp(48px, 6vw, 80px);
  padding: clamp(32px, 4vw, 52px);
  background: var(--card);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.contact-item .kicker { display: block; margin-bottom: 10px; }

.contact-item a {
  font-family: var(--serif);
  font-size: clamp(17px, 1.8vw, 21px);
  color: var(--ink);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--hairline);
}
.contact-item a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.contact-item p {
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 0;
}

/* ── 404 ────────────────────────────────── */

.notfound {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px var(--gutter);
}

.notfound .code {
  font-family: var(--serif);
  font-size: clamp(90px, 16vw, 180px);
  color: rgba(75, 58, 47, 0.1);
  line-height: 1;
  margin-bottom: 24px;
}

.notfound h1 {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 34px);
  color: var(--ink);
  margin: 0 0 16px;
  letter-spacing: 0.04em;
}

.notfound p { color: var(--muted); font-size: 14px; margin-bottom: 32px; }

/* ── 进场动画 ───────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.85s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.85s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .sample:hover { transform: none; }
}

/* ── 响应式 ─────────────────────────────── */

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }

  .nav.open .nav-links {
    display: flex;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(251, 244, 233, 0.98);
    border-bottom: 1px solid var(--hairline);
    padding: 10px var(--gutter) 20px;
    font-size: 15px;
  }
  .nav.open .nav-links a {
    padding: 13px 0;
    width: 100%;
    border-bottom: 1px solid var(--hairline-soft);
  }
  .nav.open .nav-links a:last-child { border-bottom: 0; }

  .steps { grid-template-columns: 1fr; }
  .step {
    border-left: 0;
    border-top: 1px solid var(--hairline);
    padding: 28px 0 0;
    margin-bottom: 28px;
  }
  .step:first-child { border-top: 0; padding-top: 0; }
  .step:last-child { margin-bottom: 0; }

  .redlines { grid-template-columns: 1fr; gap: 0; }

  .economy { grid-template-columns: 1fr; }
  .economy-divider { height: 1px; width: 100%; }

  .samples { grid-template-columns: 1fr; }

  .name-block { grid-template-columns: 1fr; }
  .name-glyph { font-size: clamp(120px, 34vw, 190px); }

  .cta { grid-template-columns: 1fr; }
  .miniapp-card { max-width: 320px; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  .collab-grid { grid-template-columns: 1fr; }
  .contact-block { grid-template-columns: 1fr; }

  .legal-toc ol { columns: 1; }

  .hero-vertical { display: none; }
}

@media (max-width: 560px) {
  .hero-inner { min-height: 0; padding-top: 96px; padding-bottom: 80px; }
  .hero h1 { font-size: clamp(38px, 11vw, 56px); }
  /* 窄屏下三条承诺各自成行，去掉分隔点 */
  .hero-meta { flex-direction: column; align-items: flex-start; gap: 6px; letter-spacing: 0.1em; }
  .hero-meta .dot { display: none; }
  .section-head { display: block; }
  .section-head .kicker { display: block; margin-bottom: 18px; }
  .brand-name { font-size: 17px; }
  .footer-grid { grid-template-columns: 1fr; }
  .story-head { display: block; }
  .story-meta { display: block; margin-top: 8px; }
}

/* 打印：法律文档可存档 */
@media print {
  body { background: #fff; color: #000; }
  body::before, .nav, .footer, .draft-note, .legal-toc { display: none; }
  .page-head { padding: 0 0 20px; border-bottom: 0; }
  .prose { max-width: none; font-size: 11pt; line-height: 1.7; }
  a { color: #000; border-bottom: 0; }
}