/* 萱宜增长转化行动手册 · visual tokens */
:root {
  --bg: #faf9f7;
  --bg-soft: #f5f3ef;
  --bg-elevated: #ffffff;
  --text: #1a1a1a;
  --text-soft: rgba(42, 42, 42, 0.75);
  --text-muted: rgba(42, 42, 42, 0.55);
  --accent: #c4b5a0;
  --accent-strong: #8a7355;
  --wine: #b91c1c;
  --border: rgba(196, 181, 160, 0.38);
  --shadow: 0 10px 30px rgba(26, 26, 26, 0.06);
  --serif: "Songti SC", "Noto Serif SC", "STSong", Georgia, serif;
  --sans: "PingFang SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --max: 920px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(196, 181, 160, 0.12), transparent 55%),
    var(--bg);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent-strong); text-decoration: none; }
a:hover { color: var(--wine); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(250, 249, 247, 0.88);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.brand-seal {
  width: 28px;
  height: 28px;
  border: 1px solid var(--wine);
  color: var(--wine);
  font-family: var(--serif);
  font-size: 12px;
  display: grid;
  place-items: center;
  flex: none;
}
.brand-title {
  font-family: var(--serif);
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.top-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.pill {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-soft);
  font-size: 0.78rem;
  padding: 6px 10px;
  cursor: pointer;
}
.pill strong { color: var(--text); font-weight: 600; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 18px 100px;
}


.brand-seal-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex: none;
}
.hero {
  display: grid;
  gap: 22px;
  margin-bottom: 8px;
}
@media (min-width: 760px) {
  .hero {
    grid-template-columns: minmax(220px, 320px) 1fr;
    align-items: start;
    gap: 28px;
  }
}
.hero-portrait {
  margin: 0;
}
.hero-portrait img {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.hero-copy .cta-row { margin-bottom: 0; }

.buy-author {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 8px;
}
.buy-author-photo {
  width: 72px;
  height: 72px;
  object-fit: cover;
  object-position: center top;
  border: 1px solid var(--border);
  flex: none;
  background: var(--bg-soft);
}
.buy-author strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 400;
}
.buy-author p {
  margin: 4px 0 0;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.hero-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 10px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  line-height: 1.25;
  margin: 0 0 8px;
}
.hero .sub {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--text-soft);
  margin: 0 0 14px;
}
.hero .lead {
  color: var(--text-soft);
  max-width: 36rem;
  margin: 0 0 22px;
}
.hero-meta {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--text);
  padding: 11px 16px;
  font-size: 0.92rem;
  cursor: pointer;
  background: var(--text);
  color: #fff;
}
.btn.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn:hover { border-color: var(--wine); }
.btn.secondary:hover { color: var(--wine); }

.section { margin: 42px 0; }
.section h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.45rem;
  margin: 0 0 8px;
}
.section .hint {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0 0 18px;
}

.progress-box {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 18px 18px 14px;
}
.progress-bar {
  height: 6px;
  background: rgba(196, 181, 160, 0.25);
  margin: 12px 0 8px;
  overflow: hidden;
}
.progress-bar > span {
  display: block;
  height: 100%;
  background: var(--accent-strong);
  width: 0;
  transition: width 0.25s ease;
}
.progress-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

.task-grid {
  display: grid;
  gap: 12px;
}
@media (min-width: 720px) {
  .task-grid { grid-template-columns: 1fr 1fr; }
}
.task-card {
  display: block;
  text-align: left;
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 18px 16px;
  cursor: pointer;
  color: inherit;
  font: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.task-card:hover {
  border-color: rgba(138, 115, 85, 0.55);
  transform: translateY(-1px);
}
.task-card .time {
  font-size: 0.75rem;
  color: var(--accent-strong);
  margin-bottom: 6px;
}
.task-card h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
}
.task-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.core-list { display: grid; gap: 8px; }
.core-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 10px;
  align-items: center;
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 12px 14px;
  cursor: pointer;
  font: inherit;
  color: inherit;
}
.core-item.read { border-color: rgba(138, 115, 85, 0.55); }
.core-item .n {
  font-family: var(--serif);
  color: var(--accent-strong);
}
.core-item .t { font-weight: 560; }
.core-item .s { font-size: 0.78rem; color: var(--text-muted); }
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(196, 181, 160, 0.45);
}
.core-item.read .dot { background: var(--wine); }

.buy-box {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 22px 18px;
  box-shadow: var(--shadow);
}
.price-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 18px;
}
.price-chip {
  border: 1px solid var(--border);
  padding: 10px 12px;
  min-width: 120px;
}
.price-chip b {
  display: block;
  font-family: var(--serif);
  font-size: 1.2rem;
}
.price-chip span { font-size: 0.8rem; color: var(--text-muted); }
.disclaimer {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-top: 18px;
}

.footer {
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* Reader modal */
.reader {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(26, 26, 26, 0.35);
  display: none;
  align-items: stretch;
  justify-content: center;
  padding: 12px;
}
.reader.open { display: flex; }
.reader-panel {
  width: min(760px, 100%);
  background: var(--bg);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 24px);
  box-shadow: var(--shadow);
}
.reader-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}
.reader-head h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.05rem;
}
.reader-body {
  overflow: auto;
  padding: 18px 18px 28px;
  -webkit-overflow-scrolling: touch;
}
.reader-foot {
  border-top: 1px solid var(--border);
  padding: 10px 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  background: var(--bg-elevated);
}
.block { margin: 0 0 22px; }
.block h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: var(--accent-strong);
  letter-spacing: 0.04em;
}
.block .content { color: var(--text-soft); font-size: 0.95rem; }
.block .content p { margin: 0 0 10px; }
.block .content ul, .block .content ol { margin: 0 0 10px; padding-left: 1.2rem; }
.block .content li { margin: 4px 0; }
.block .content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 8px 0 12px;
}
.block .content th, .block .content td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
.block .content th { background: var(--bg-soft); }
.tag-row { display: flex; gap: 6px; flex-wrap: wrap; margin: 0 0 14px; }
.tag {
  font-size: 0.72rem;
  border: 1px solid var(--border);
  padding: 2px 8px;
  color: var(--text-muted);
}
.mobile-nav {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 15;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(250, 249, 247, 0.96);
  border-top: 1px solid var(--border);
}
.mobile-nav button {
  border: 0;
  background: transparent;
  padding: 12px 8px;
  font: inherit;
  font-size: 0.82rem;
  color: var(--text-soft);
  cursor: pointer;
}
.mobile-nav button:hover { color: var(--wine); }
@media (min-width: 860px) {
  .mobile-nav { display: none; }
}