/* 纸上解药 — 印刷书 / 处方笺 视觉系统
   纸色底 · 墨色字 · 朱砂红印章 · 铅线分隔 · 索引卡式卡片 */

:root {
  --paper: #f3eedf;
  --paper-deep: #ebe3cf;
  --paper-soft: #faf7ec;
  --card: #fbf8ef;
  --card-hi: #efe7d3;
  --ink: #211d13;
  --ink-soft: #4c4635;
  --ink-dim: #8b8370;
  --line: #c9c0a8;
  --line-soft: #ddd5c1;
  --red: #a63128;
  --red-deep: #84231c;
  --red-soft: rgba(166, 49, 40, .08);
  --serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --radius: 2px;
  --shadow-hard: 3px 3px 0 rgba(33, 29, 19, .10);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--red); color: var(--paper-soft); }

a { color: inherit; text-decoration: none; }

img { max-width: 100%; }

/* 稿纸底纹：极淡的铅线网格，向上渐隐 */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(33, 29, 19, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(33, 29, 19, .055) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 40%, transparent 100%);
}

/* 键盘焦点：朱砂描边，保证可访问性 */
:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

/* ============ 页眉 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: .9rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .65rem;
  flex-shrink: 0;
}

/* 印章式 logo：朱砂红方印 + 白「解」字 */
.brand-mark {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 4px;
  background: var(--red);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 2px 0 rgba(33, 29, 19, .18);
  overflow: hidden;
  animation: stampIn .55s cubic-bezier(.2, .9, .3, 1) both;
}

.brand-mark i { display: none; }

.brand-mark::after {
  content: "解";
  font-family: var(--serif);
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
}

.brand-name {
  font-family: var(--serif);
  font-size: 1.28rem;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--ink);
}

.brand-name span {
  color: var(--red);
  font-weight: 800;
}

/* 印章盖印入场 */
@keyframes stampIn {
  0% { transform: scale(1.8) rotate(-14deg); opacity: 0; }
  60% { transform: scale(.92) rotate(-2deg); opacity: 1; }
  100% { transform: scale(1) rotate(0); }
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: .95rem;
  margin-left: .4rem;
}

.main-nav a {
  position: relative;
  padding: .45rem .8rem;
  color: var(--ink-soft);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color .15s;
}

.main-nav a:hover { color: var(--red); }

.main-nav a.active {
  color: var(--ink);
  border-bottom-color: var(--red);
  font-weight: 600;
}

.nav-search {
  position: relative;
  margin-left: auto;
  flex: 0 1 220px;
  min-width: 0;
}

.nav-search > i {
  position: absolute;
  left: 2px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-dim);
  font-size: .85rem;
  pointer-events: none;
}

.nav-search input {
  width: 100%;
  padding: .35rem .2rem .35rem 1.5rem;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  color: var(--ink);
  font-size: .92rem;
  outline: none;
  transition: border-color .15s;
}

.nav-search input:focus { border-bottom-color: var(--red); }

.nav-search input::placeholder { color: var(--ink-dim); }

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 1rem;
  padding: .45rem .65rem;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  background: var(--paper);
  border-top: 1px solid var(--line-soft);
}

.mobile-nav a {
  display: block;
  padding: .8rem 1.2rem;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-soft);
}

.mobile-nav a.active { color: var(--red); font-weight: 600; }

.site-main {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

/* ============ Hero（书名页） ============ */
.hero {
  padding: 4.6rem 0 3.2rem;
  text-align: center;
}

.hero-inner { max-width: 780px; margin: 0 auto; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: .35rem .8rem;
  background: var(--card);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 3px var(--red-soft);
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: .02em;
  margin: 1.4rem 0 0;
}

/* 强调词：墨色字 + 朱砂下划线，像批注 */
.gradient-text,
.gradient-text-2 {
  color: var(--ink);
  background: none;
  -webkit-background-clip: initial;
  background-clip: initial;
  border-bottom: 4px solid var(--red);
  padding-bottom: .08em;
  white-space: nowrap;
}

.hero-sub {
  color: var(--ink-soft);
  font-size: 1.02rem;
  max-width: 560px;
  margin: 1.2rem auto 2.2rem;
}

.hero-search {
  position: relative;
  max-width: 620px;
  margin: 0 auto;
}

.hero-search > i {
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-dim);
  font-size: .95rem;
  pointer-events: none;
}

.hero-search input {
  width: 100%;
  padding: .7rem 3rem .7rem 2.1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 1.02rem;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

.hero-search input:focus {
  border-color: var(--red);
  box-shadow: var(--shadow-hard);
}

.hero-search input::placeholder { color: var(--ink-dim); }

.hero-search button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--ink-dim);
  font-size: .9rem;
  cursor: pointer;
  padding: .3rem .4rem;
}

.hero-search button:hover { color: var(--red); }

/* 分类入口：索引条，不圆不彩 */
.hero-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .45rem;
  margin: 1.6rem 0 0;
}

.hero-chip {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  background: var(--card);
  padding: .3rem .65rem;
  transition: color .15s, border-color .15s, transform .15s;
}

.hero-chip:hover {
  color: var(--red);
  border-color: var(--red);
  transform: translateY(-1px);
}

/* 统计：书页上的数据表 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: .4rem;
  margin-top: 2.6rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .15rem;
  padding: 0 .2rem;
  border-left: 1px solid var(--line-soft);
}

.stat:first-child { border-left: none; }

.stat-num {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.1;
}

.stat-label {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .06em;
  color: var(--ink-dim);
}

/* ============ 区块（章节） ============ */
.section { padding: 3.2rem 0; }

.section-head {
  margin-bottom: 1.6rem;
  padding-bottom: .8rem;
  border-bottom: 1px solid var(--line);
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: .45rem;
}

.section-eyebrow::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--red);
  margin-right: .45rem;
  vertical-align: 1px;
}

.section-title {
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 800;
  line-height: 1.25;
  margin: 0;
  color: var(--ink);
}

.section-desc {
  color: var(--ink-soft);
  font-size: .95rem;
  margin: .35rem 0 0;
}

.more-link {
  float: right;
  margin-top: .2rem;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.more-link:hover { color: var(--red); border-bottom-color: var(--red); }

/* 区块间的分隔行 */
.zone-divider {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 2.2rem 0 1.2rem;
  padding-top: 1.4rem;
  border-top: 2px solid var(--ink);
}

.zone-divider a {
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 400;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.zone-divider a:hover { color: var(--red); border-bottom-color: var(--red); }

/* ============ 专区 / 场景 ============ */
.editor-zone { border-bottom: 1px solid var(--line-soft); }

.zone-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.zone-card {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.zone-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.zone-icon,
.scenario-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}

.zone-body { min-width: 0; }

.zone-title {
  display: block;
  font-family: var(--serif);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
}

.zone-count {
  display: block;
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--red);
  margin-top: .15rem;
  letter-spacing: .04em;
}

.zone-desc {
  display: block;
  font-size: .82rem;
  color: var(--ink-soft);
  margin-top: .35rem;
  line-height: 1.6;
}

.zone-arrow {
  margin-left: auto;
  color: var(--ink-dim);
  font-size: .9rem;
  align-self: center;
  transition: color .15s, transform .15s;
}

.zone-card:hover .zone-arrow { color: var(--red); transform: translateX(2px); }

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: .9rem;
}

.scenario-card {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.scenario-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.scenario-body strong {
  display: block;
  font-family: var(--serif);
  font-size: .95rem;
  color: var(--ink);
}

.scenario-body span {
  display: block;
  font-size: .76rem;
  color: var(--ink-dim);
  margin-top: .2rem;
}

/* ============ 卡片通用（索引卡） ============ */
.tool-grid,
.skill-grid,
.news-list,
.gh-grid,
.vs-grid {
  display: grid;
  gap: .9rem;
}

.tool-grid { grid-template-columns: repeat(3, 1fr); }
.skill-grid { grid-template-columns: repeat(2, 1fr); }
.gh-grid { grid-template-columns: repeat(2, 1fr); }
.vs-grid { grid-template-columns: repeat(2, 1fr); }
.news-list { grid-template-columns: 1fr; }

.tool-card,
.skill-card,
.news-card,
.workflow-card,
.prompt-card,
.gh-card,
.vs-card {
  position: relative;
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.tool-card:hover,
.skill-card:hover,
.news-card:hover,
.workflow-card:hover,
.gh-card:hover,
.vs-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

/* 卡片入场 */
@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in { animation: rise .45s ease both; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* ============ 工具卡 ============ */
.tool-card {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  padding: 1.05rem 1.1rem;
  overflow: hidden;
}

.tool-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background .15s;
}

.tool-card:hover::before { background: var(--red); }

.tool-emoji {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  border: 1px solid var(--line-soft);
  background: var(--paper-soft);
}

.tool-body { min-width: 0; flex: 1; }

.tool-top { display: flex; align-items: baseline; gap: .45rem; }

.tool-name {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
}

.tool-card:hover .tool-name { color: var(--red-deep); }

.tool-desc {
  font-size: .82rem;
  color: var(--ink-soft);
  line-height: 1.6;
  margin: .3rem 0 .45rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .25rem .55rem;
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--ink-dim);
}

.price {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .03em;
}

.price-free { color: var(--ink-soft); }
.price-free::before, .price-free::after { content: "["; }
.price-free::after { content: "]"; }

.price-freemium { color: var(--ink-dim); }
.price-freemium::before, .price-freemium::after { content: "["; }
.price-freemium::after { content: "]"; }

.price-paid { color: var(--red); }
.price-paid::before, .price-paid::after { content: "["; }
.price-paid::after { content: "]"; }

.rating i { color: var(--red); font-size: .62rem; }

.reviews::before { content: "· "; }

.tool-arrow {
  margin-left: auto;
  color: var(--ink-dim);
  font-size: .85rem;
  align-self: center;
  transition: color .15s, transform .15s;
}

.tool-card:hover .tool-arrow { color: var(--red); transform: translateX(2px); }

/* HOT 印章 */
.hot-badge {
  flex-shrink: 0;
  display: inline-block;
  font-family: var(--mono);
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--red);
  border: 1px solid var(--red);
  padding: .05rem .32rem;
  border-radius: 1px;
  transform: rotate(-2deg);
  margin-left: .2rem;
  vertical-align: .12em;
  background: var(--red-soft);
}

/* 标签：方括号索引 */
.mini-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--ink-dim);
  margin-right: .15rem;
}

.mini-tag::before { content: "["; }
.mini-tag::after { content: "]"; }

/* ============ 分类 ============ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .9rem;
}

.cat-card {
  display: flex;
  align-items: center;
  gap: .8rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .95rem 1rem;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.cat-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.cat-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  border: 1px solid var(--line-soft);
  background: var(--paper-soft);
}

.cat-name {
  display: block;
  font-family: var(--serif);
  font-size: .98rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
}

.cat-count {
  display: block;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--ink-dim);
  margin-top: .1rem;
}

/* ============ Skill 卡 ============ */
.skill-card {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  padding: 1.15rem 1.2rem;
}

.skill-card-compact { padding: 1rem 1.1rem; }

.skill-emoji {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  border: 1px solid var(--line-soft);
  background: var(--paper-soft);
}

.skill-body { min-width: 0; flex: 1; }

.skill-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem;
}

.skill-name {
  font-family: var(--serif);
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--ink);
}

.skill-card:hover .skill-name { color: var(--red-deep); }

.skill-level {
  font-family: var(--mono);
  font-size: .66rem;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  padding: .08rem .4rem;
  white-space: nowrap;
}

.skill-tagline {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--red);
  margin: .45rem 0 0;
  letter-spacing: .02em;
}

.skill-desc {
  font-size: .84rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin: .35rem 0 .5rem;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: .1rem .4rem; }

/* Skill 详情页内 */
.skill-meta {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin: .7rem 0 0;
  padding-top: .7rem;
  border-top: 1px dashed var(--line);
  font-size: .8rem;
  color: var(--ink-soft);
}

.skill-meta span i {
  color: var(--red);
  width: 14px;
  margin-right: .3rem;
}

.skill-steps {
  margin: .8rem 0 0;
  padding-left: 1.2rem;
  color: var(--ink-soft);
  font-size: .82rem;
}

.skill-steps li { margin-bottom: .25rem; }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: .8rem; max-width: 820px; }

.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
}

.faq-item h3 {
  font-family: var(--serif);
  font-size: 1rem;
  margin: 0 0 .35rem;
  color: var(--ink);
}

.faq-item p { margin: 0; font-size: .86rem; color: var(--ink-soft); }

/* ============ 资讯 ============ */
.news-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.15rem;
}

.news-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--red);
  font-size: 1.05rem;
  border: 1px solid var(--line-soft);
  background: var(--paper-soft);
}

.news-body { min-width: 0; flex: 1; }

.news-top { display: flex; align-items: baseline; gap: .6rem; }

.news-title {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.news-card:hover .news-title { color: var(--red-deep); }

.news-tag {
  font-family: var(--mono);
  font-size: .66rem;
  color: var(--red);
  border: 1px solid var(--red);
  padding: .04rem .35rem;
  white-space: nowrap;
}

.news-desc {
  font-size: .82rem;
  color: var(--ink-soft);
  margin: .25rem 0 0;
  line-height: 1.6;
}

.news-date {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--ink-dim);
  white-space: nowrap;
  align-self: flex-end;
}

.news-arrow { color: var(--ink-dim); margin-left: auto; }

.news-article {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .4rem 1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.05rem 1.15rem;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.news-article:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.news-article .news-title { font-size: 1.02rem; }
.news-article .news-desc { margin-bottom: 0; }

/* ============ 工作流 ============ */
.workflow-card {
  padding: 1.2rem 1.3rem;
}

.workflow-head {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
}

.workflow-emoji {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  border: 1px solid var(--line-soft);
  background: var(--paper-soft);
}

.workflow-head h2 {
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0 0 .25rem;
  color: var(--ink);
}

.workflow-head p { margin: 0; font-size: .84rem; color: var(--ink-soft); }

.workflow-scenes { margin-top: .5rem; }

.workflow-steps {
  margin: 1rem 0 0;
  padding-left: 1.3rem;
  color: var(--ink-soft);
  font-size: .84rem;
  border-top: 1px dashed var(--line);
  padding-top: .9rem;
}

.workflow-steps li { margin-bottom: .3rem; }

.workflow-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin-top: .9rem;
  padding-top: .8rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--ink-dim);
}

.workflow-label { color: var(--red); letter-spacing: .05em; }

.workflow-list {
  display: grid;
  gap: .9rem;
}

.workflow-card-mini { padding: 1rem 1.15rem; }

.workflow-card-mini h2 { font-size: 1rem; }

.workflow-skills {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .6rem;
}

.workflow-skills a {
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: .15rem .5rem;
  transition: color .15s, border-color .15s;
}

.workflow-skills a:hover { color: var(--red); border-color: var(--red); }

.workflow-tools { font-size: .78rem; }

/* ============ 提示词 ============ */
.prompt-card {
  padding: 1.15rem 1.25rem;
}

.prompt-head {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
}

.prompt-emoji {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  border: 1px solid var(--line-soft);
  background: var(--paper-soft);
}

.prompt-head h2 {
  font-family: var(--serif);
  font-size: 1.02rem;
  margin: 0 0 .2rem;
  color: var(--ink);
}

.prompt-head p { margin: 0; font-size: .82rem; color: var(--ink-soft); }

.copy-btn {
  margin-left: auto;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--ink-soft);
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .3rem .6rem;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}

.copy-btn:hover {
  color: var(--paper-soft);
  background: var(--red);
  border-color: var(--red);
}

.prompt-text {
  margin: .9rem 0 0;
  padding: .9rem 1rem;
  background: var(--paper-soft);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--red);
  font-family: var(--mono);
  font-size: .76rem;
  line-height: 1.75;
  color: var(--ink-soft);
  white-space: pre-wrap;
  word-break: break-word;
}

.prompt-tags { margin-top: .7rem; }

/* ============ GitHub Skill / 视频网站 ============ */
.gh-card,
.vs-card {
  padding: 1.1rem 1.2rem;
  display: flex;
  align-items: flex-start;
  gap: .9rem;
}

.gh-emoji,
.vs-emoji {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  border: 1px solid var(--line-soft);
  background: var(--paper-soft);
}

.gh-body,
.vs-body { min-width: 0; flex: 1; }

.gh-top,
.vs-top {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  flex-wrap: wrap;
}

.gh-name,
.vs-name {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.gh-card:hover .gh-name,
.vs-card:hover .vs-name { color: var(--red-deep); }

.gh-stars {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--ink-dim);
}

.gh-stars i { color: var(--red); margin-right: .2rem; }

.gh-repo,
.vs-link {
  display: block;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-soft);
  margin: .35rem 0 .4rem;
  border-bottom: 1px solid var(--line-soft);
  width: fit-content;
}

.gh-repo:hover,
.vs-link:hover { color: var(--red); border-bottom-color: var(--red); }

.gh-desc,
.vs-desc {
  font-size: .82rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin: 0;
}

.gh-tags,
.vs-tags { margin-top: .55rem; }

.gh-install {
  display: block;
  margin-top: .7rem;
  padding: .55rem .7rem;
  background: var(--paper-soft);
  border: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-soft);
  overflow-x: auto;
  white-space: nowrap;
}

.gh-note,
.vs-note {
  font-size: .75rem;
  color: var(--ink-dim);
  margin-top: .5rem;
}

.vs-region {
  font-family: var(--mono);
  font-size: .66rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: .05rem .4rem;
}

.vs-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .3rem .8rem;
  margin-top: .55rem;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--ink-dim);
}

/* ============ 筛选 ============ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 1.2rem 0;
}

.filter-chip {
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .3rem .7rem;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}

.filter-chip:hover { color: var(--red); border-color: var(--red); }

.filter-chip.active {
  color: var(--paper-soft);
  background: var(--ink);
  border-color: var(--ink);
}

/* ============ 搜索 ============ */
.search-section { border-top: 2px solid var(--ink); }

.search-results { display: flex; flex-direction: column; gap: .7rem; }

.search-group {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--serif);
  font-size: .95rem;
  font-weight: 700;
  margin: .6rem 0 .4rem;
  padding-top: .6rem;
  border-top: 1px solid var(--line-soft);
}

.search-group-icon {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  font-size: .8rem;
}

.search-group em {
  font-style: normal;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--ink-dim);
}

.empty-state {
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: .85rem;
  border: 1px dashed var(--line);
}

/* ============ 分类页 ============ */
.cat-hero {
  padding: 3rem 0 1.8rem;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 1.6rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--ink-dim);
  border-bottom: 1px solid var(--line);
}

.back-link:hover { color: var(--red); border-bottom-color: var(--red); }

.cat-hero-head {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-top: 1rem;
}

.cat-hero-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  border: 1px solid var(--line);
  background: var(--card);
}

.cat-hero-head h1 {
  font-family: var(--serif);
  font-size: 1.9rem;
  margin: 0;
  color: var(--ink);
}

.cat-hero-head p {
  margin: .2rem 0 0;
  color: var(--ink-soft);
  font-size: .92rem;
}

.cat-search {
  position: relative;
  max-width: 420px;
  margin-top: 1.4rem;
}

.cat-search > i {
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-dim);
  font-size: .85rem;
}

.cat-search input {
  width: 100%;
  padding: .5rem .6rem .5rem 1.8rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: var(--radius);
  color: var(--ink);
  font-size: .92rem;
  outline: none;
}

.cat-search input:focus { border-color: var(--red); }

/* ============ 文章页 ============ */
.article-hero {
  padding: 3rem 0 1.6rem;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 1.8rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-dim);
  margin-bottom: .8rem;
}

.article-hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.4;
  margin: 0;
  color: var(--ink);
}

.article-hero p {
  color: var(--ink-soft);
  font-size: 1rem;
  margin: .6rem 0 0;
  max-width: 620px;
}

.article-body {
  max-width: 720px;
  font-family: var(--serif);
  font-size: 1.06rem;
  line-height: 2;
  color: var(--ink);
}

.article-section { margin-bottom: 2.4rem; }

.article-section h2 {
  font-family: var(--serif);
  font-size: 1.3rem;
  color: var(--ink);
  border-left: 4px solid var(--red);
  padding-left: .7rem;
  margin: 0 0 .8rem;
}

.article-section p { margin: 0 0 1rem; }

.news-hero { padding: 3rem 0 1.4rem; }

.news-page-list {
  display: flex;
  flex-direction: column;
  gap: .8rem;
}

/* ============ 404 ============ */
.nf-wrap {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: 5rem 1rem;
}

.nf-code {
  font-family: var(--serif);
  font-size: 5rem;
  font-weight: 800;
  color: var(--red);
  line-height: 1;
}

.nf-wrap h1 {
  font-family: var(--serif);
  font-size: 1.4rem;
  margin: 1rem 0 .5rem;
}

.nf-wrap p { color: var(--ink-soft); }

/* ============ 通用按钮 ============ */
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--red);
  border: 1px solid var(--red);
  border-radius: var(--radius);
  padding: .4rem .8rem;
  transition: background .15s, color .15s;
}

.btn-link:hover { background: var(--red); color: var(--paper-soft); }

.section-cta { text-align: center; padding: 1rem 0 2rem; }

.mini-zone-row {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: .8rem 0;
}

.mini-zone-link {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: .25rem .6rem;
  transition: color .15s, border-color .15s;
}

.mini-zone-link:hover { color: var(--red); border-color: var(--red); }

/* ============ 页脚（版权页） ============ */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 3px double var(--ink);
  margin-top: 2rem;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 2.2rem 1.5rem 2.6rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
}

.footer-brand .brand-mark {
  width: 30px;
  height: 30px;
}

.footer-brand .brand-mark::after { font-size: 18px; }

.footer-brand .brand-name { font-size: 1.1rem; }

.footer-copy {
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--ink-dim);
  margin: 0;
  letter-spacing: .03em;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .2rem 1.2rem;
}

.footer-links a {
  font-size: .82rem;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.footer-links a:hover { color: var(--red); border-bottom-color: var(--red); }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
  .zone-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-stats { grid-template-columns: repeat(4, 1fr); row-gap: 1rem; }
  .stat:nth-child(5) { border-left: none; }
  .main-nav { display: none; }
  .nav-search { display: none; }
  .menu-btn { display: inline-flex; margin-left: auto; }
  .mobile-nav.open { display: block; }
}

@media (max-width: 640px) {
  .header-inner { padding: .7rem 1rem; gap: .8rem; }
  .site-main { padding: 0 1rem 4rem; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-mark::after { font-size: 20px; }
  .brand-name { font-size: 1.08rem; }
  .hero { padding: 3.2rem 0 2.4rem; }
  .hero h1 { font-size: 1.7rem; line-height: 1.4; }
  .hero-sub { font-size: .92rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: .9rem .6rem; }
  .stat { border-left: none; }
  .section { padding: 2.4rem 0; }
  .section-title { font-size: 1.5rem; }
  .tool-grid,
  .skill-grid,
  .gh-grid,
  .vs-grid,
  .zone-grid,
  .cat-grid,
  .scenario-grid { grid-template-columns: 1fr; }
  .news-card { align-items: flex-start; flex-wrap: wrap; }
  .news-date { align-self: auto; }
  .cat-hero-head { gap: .9rem; }
  .cat-hero-head h1 { font-size: 1.5rem; }
  .cat-hero-icon { width: 52px; height: 52px; font-size: 1.4rem; }
  .article-body { font-size: 1rem; line-height: 1.95; }
  .footer-inner { padding: 1.8rem 1rem 2.2rem; }
}

/* ============ 动效：首页入场 ============ */
@keyframes riseIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

.hero-badge { animation: riseIn .5s ease both; }
.hero h1 { animation: riseIn .55s ease .08s both; }
.hero-sub { animation: riseIn .55s ease .16s both; }
.hero-search { animation: riseIn .55s ease .24s both; }
.hero-chips { animation: riseIn .55s ease .32s both; }
.hero-stats { animation: riseIn .55s ease .4s both; }
.ticker { animation: riseIn .55s ease .48s both; }

/* ============ 跑马灯 ============ */
.ticker {
  display: flex;
  align-items: stretch;
  max-width: 620px;
  margin: 1.8rem auto 0;
  border: 1px solid var(--line);
  background: var(--card);
  overflow: hidden;
}

.ticker-label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  color: var(--paper-soft);
  background: var(--red);
  padding: 0 .7rem;
}

.ticker-track {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  white-space: nowrap;
  padding: .32rem .8rem;
  animation: tickerScroll 38s linear infinite;
}

.ticker:hover .ticker-track { animation-play-state: paused; }

.ticker-track span {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-soft);
}

.ticker-track span::before {
  content: "◆";
  color: var(--red);
  font-size: .5rem;
  margin-right: .7rem;
  vertical-align: 1px;
}

@keyframes tickerScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============ 听读写看 四感通道 ============ */
.channels { border-bottom: 1px solid var(--line-soft); }

.channel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .65rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.2rem 1.2rem;
  overflow: hidden;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s ease;
}

.channel-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.channel-card:hover::before { transform: scaleX(1); }

.channel-icon {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--red);
  border: 1px solid var(--line);
  background: var(--paper-soft);
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .2s, color .2s, transform .25s ease;
}

.channel-card:hover .channel-icon {
  background: var(--red);
  color: var(--paper-soft);
  transform: rotate(-5deg);
}

.channel-title {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--ink);
}

.channel-desc {
  font-size: .8rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

.channel-arrow {
  position: absolute;
  right: 1.1rem;
  top: 1.2rem;
  color: var(--ink-dim);
  transition: color .15s, transform .15s;
}

.channel-card:hover .channel-arrow { color: var(--red); transform: translateX(2px); }

/* 四通道入场错峰 */
.channel-grid .channel-card:nth-child(1) { animation-delay: .04s; }
.channel-grid .channel-card:nth-child(2) { animation-delay: .1s; }
.channel-grid .channel-card:nth-child(3) { animation-delay: .16s; }
.channel-grid .channel-card:nth-child(4) { animation-delay: .22s; }

/* ============ 书单 ============ */
.books-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.books-grid-full { grid-template-columns: repeat(2, 1fr); }

.book-card {
  display: block;
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.3rem 1.2rem;
  overflow: hidden;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.book-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--red);
}

.book-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.book-no {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--red);
}

.book-title {
  display: block;
  font-family: var(--serif);
  font-size: 1.28rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink);
  margin-top: .4rem;
}

.book-card:hover .book-title { color: var(--red-deep); }

.book-author {
  display: block;
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--ink-dim);
  margin-top: .2rem;
}

.book-why {
  font-size: .84rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin: .6rem 0 .85rem;
}

.book-link {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--red);
  border-bottom: 1px solid var(--red);
}

.book-points {
  margin: .8rem 0 0;
  padding-left: 1.25rem;
  color: var(--ink-soft);
  font-size: .83rem;
  border-top: 1px dashed var(--line);
  padding-top: .8rem;
}

.book-points li { margin-bottom: .28rem; }

.book-buy {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--red);
  border: 1px solid var(--red);
  border-radius: var(--radius);
  padding: .32rem .7rem;
  margin-top: 1rem;
  transition: background .15s, color .15s;
}

.book-buy:hover { background: var(--red); color: var(--paper-soft); }

.books-grid .book-card:nth-child(1) { animation-delay: .04s; }
.books-grid .book-card:nth-child(2) { animation-delay: .1s; }
.books-grid .book-card:nth-child(3) { animation-delay: .16s; }

/* ============ 指南 / 素材 ============ */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.guide-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.25rem;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.guide-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.guide-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem;
}

.guide-name {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink);
}

.guide-topic {
  font-family: var(--mono);
  font-size: .66rem;
  color: var(--red);
  border: 1px solid var(--red);
  padding: .06rem .42rem;
  white-space: nowrap;
}

.guide-steps {
  margin: .85rem 0 0;
  padding-left: 1.25rem;
  color: var(--ink-soft);
  font-size: .84rem;
}

.guide-steps li { margin-bottom: .3rem; }

.guide-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  margin-top: .95rem;
}

.guide-link:hover { color: var(--red); border-bottom-color: var(--red); }

.asset-group { margin-bottom: 2.6rem; }

.asset-group-head {
  border-bottom: 1px solid var(--line);
  padding-bottom: .55rem;
  margin-bottom: 1rem;
}

.asset-group-name {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 800;
}

.asset-group-name::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--red);
  margin-right: .55rem;
  vertical-align: 2px;
}

.asset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .9rem;
}

.asset-card {
  display: flex;
  align-items: center;
  gap: .7rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .9rem 1rem;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}

.asset-card:hover {
  border-color: var(--ink);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.asset-name {
  font-family: var(--serif);
  font-size: .98rem;
  font-weight: 700;
  color: var(--ink);
}

.asset-desc {
  display: block;
  font-size: .76rem;
  color: var(--ink-dim);
  margin-top: .1rem;
  line-height: 1.5;
}

.asset-go {
  margin-left: auto;
  color: var(--ink-dim);
  transition: color .15s;
}

.asset-card:hover .asset-go { color: var(--red); }

/* ============ 响应式补充 ============ */
@media (max-width: 960px) {
  .channel-grid { grid-template-columns: repeat(2, 1fr); }
  .books-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .asset-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .channel-grid,
  .books-grid,
  .books-grid-full,
  .guide-grid,
  .asset-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .ticker-track { animation-duration: 26s; }
}

/* ============ 变现组件 ============ */
.ad-slot { margin: 18px 0; }
.ad-slot.ad-hero { margin: -6px 0 22px; }
.ad-slot > * { max-width: 100%; }
.hot-badge.promo-badge { background: #f59e0b !important; }
.donate-card {
  margin: 28px auto;
  padding: 22px;
  max-width: 640px;
  text-align: center;
  background: linear-gradient(135deg, #fff8e8, #fdf0e0);
  border: 1px solid #f0d9b8;
  border-radius: 16px;
}
.donate-head { font-weight: 700; font-size: 16px; color: #8a5a17; margin-bottom: 6px; }
.donate-card p { color: #7a6a4f; font-size: 13px; margin: 0 0 14px; }
.donate-qrs { display: flex; justify-content: center; gap: 18px; }
.donate-qr img {
  width: 108px;
  height: 108px;
  border-radius: 10px;
  border: 1px solid #e5d3b2;
  background: #fff;
  object-fit: contain;
}
.donate-qr span { display: block; font-size: 12px; color: #8a5a17; margin-top: 6px; }