/* ============================================================
   中小学实验操作指南站 · 糖果缤纷主题
   配色严格遵循视觉设计规范：主 #bf6422 / 辅 #3bce79 / 强调 #194be6
   ============================================================ */

:root{
  /* —— 规范配色（CSS 变量，全站统一使用）—— */
  --c-primary:#bf6422;
  --c-accent:#3bce79;
  --c-highlight:#194be6;
  --c-bg:#fbfaf8;
  --c-surface:#ffffff;
  --c-text:#2c221b;
  --c-text-sub:#7a695c;
  --c-line:#e6e0db;

  /* 学科色：从规范配色派生 */
  --c-chem:#bf6422;   /* 化学 · 主色橙 */
  --c-phys:#194be6;   /* 物理 · 强调蓝 */
  --c-bio:#3bce79;    /* 生物 · 辅助绿 */

  /* 形态 */
  --r-lg:20px;
  --r-md:14px;
  --r-pill:999px;
  --shadow-sm:0 6px 18px rgba(44,34,27,.06);
  --shadow-md:0 14px 36px rgba(44,34,27,.10);
  --shadow-pop:0 18px 46px rgba(25,75,230,.16);

  /* 字体 */
  --font-title:'Quicksand','PingFang SC',system-ui,sans-serif;
  --font-body:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;

  --ease-bounce:cubic-bezier(.34,1.56,.64,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--c-text);
  background:var(--c-bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,.font-title{font-family:var(--font-title);letter-spacing:.2px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:rgba(25,75,230,.16)}

/* ---------- 波点 / 装饰纹理 ---------- */
.dot-pattern{
  background-image:
    radial-gradient(circle at 18px 18px, rgba(191,100,34,.14) 4px, transparent 4.6px),
    radial-gradient(circle at 58px 68px, rgba(25,75,230,.10) 5px, transparent 5.6px),
    radial-gradient(circle at 92px 26px, rgba(59,206,121,.16) 3px, transparent 3.6px);
  background-size:128px 128px;
}
.dot-pattern--blue{
  background-image:radial-gradient(circle at 16px 16px, rgba(25,75,230,.12) 4px, transparent 4.6px);
  background-size:96px 96px;
}
.dot-pattern--green{
  background-image:radial-gradient(circle at 16px 16px, rgba(59,206,121,.14) 4px, transparent 4.6px);
  background-size:96px 96px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,250,248,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
}
.header-inner{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 22px;gap:16px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{
  width:44px;height:44px;border-radius:16px;
  background:linear-gradient(135deg,var(--c-primary),#e0935a);
  display:grid;place-items:center;
  font-size:24px;color:#fff;
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease-bounce);
}
.brand:hover .brand-logo{transform:rotate(-8deg) scale(1.08)}
.brand-name{font-family:var(--font-title);font-weight:700;font-size:18px;line-height:1.2}
.brand-sub{font-size:12px;color:var(--c-text-sub)}

.main-nav{display:flex;gap:6px;align-items:center}
.nav-link{
  padding:9px 18px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:var(--c-text-sub);
  border:1px solid transparent;transition:all .25s;
}
.nav-link:hover{color:var(--c-text);background:#fff;border-color:var(--c-line)}
.nav-link.is-active{color:#fff;background:var(--c-highlight);box-shadow:0 6px 16px rgba(25,75,230,.25)}

/* ---------- 英雄区 ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 22px 84px;
}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 15% 10%,rgba(59,206,121,.10),transparent 60%),radial-gradient(600px 340px at 88% 20%,rgba(191,100,34,.12),transparent 60%),radial-gradient(500px 300px at 60% 90%,rgba(25,75,230,.08),transparent 60%);pointer-events:none}
.hero-inner{max-width:1180px;margin:0 auto;position:relative;text-align:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:8px 18px;font-size:13.5px;font-weight:600;color:var(--c-primary);
  box-shadow:var(--shadow-sm);margin-bottom:22px;
}
.hero-eyebrow .bubble{width:9px;height:9px;border-radius:50%;background:var(--c-accent);animation:blink 2s infinite}
.hero h1{
  font-size:clamp(32px,6vw,58px);font-weight:800;line-height:1.12;
  letter-spacing:.5px;margin-bottom:16px;
}
.hero h1 .grad{background:linear-gradient(90deg,var(--c-primary),#e0935a 45%,var(--c-highlight));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{max-width:640px;margin:0 auto 30px;color:var(--c-text-sub);font-size:clamp(15px,2.4vw,17px)}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-weight:700;font-size:15px;border:none;
  transition:transform .25s var(--ease-bounce),box-shadow .25s;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 24px rgba(191,100,34,.30)}
.btn-primary:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 16px 34px rgba(191,100,34,.38)}
.btn-highlight{background:var(--c-highlight);color:#fff;box-shadow:0 10px 24px rgba(25,75,230,.28)}
.btn-highlight:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 16px 34px rgba(25,75,230,.36)}
.btn-ghost{background:#fff;color:var(--c-text);border:1.5px solid var(--c-line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--c-primary);color:var(--c-primary)}

/* 漂浮糖果点缀 */
.hero-float{position:absolute;border-radius:50%;pointer-events:none;filter:blur(1px);opacity:.85;animation:floaty 6s ease-in-out infinite}
.f1{width:26px;height:26px;background:rgba(191,100,34,.28);left:8%;top:22%}
.f2{width:16px;height:16px;background:rgba(25,75,230,.25);right:12%;top:26%;animation-delay:1.2s}
.f3{width:22px;height:22px;background:rgba(59,206,121,.30);left:16%;bottom:14%;animation-delay:.6s}
.f4{width:34px;height:34px;border:6px solid rgba(25,75,230,.16);right:8%;bottom:18%;animation-delay:1.8s;background:transparent}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-18px) rotate(10deg)}}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}

/* ---------- 主体容器 ---------- */
.container{max-width:1180px;margin:0 auto;padding:0 22px}
.section{padding:52px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;flex-wrap:wrap}
.section-title{font-size:clamp(22px,3.4vw,30px);font-weight:800;display:flex;align-items:center;gap:12px}
.section-title .tick{width:12px;height:30px;border-radius:8px;background:var(--c-primary);display:inline-block}
.section-more{color:var(--c-highlight);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .25s}
.section-more:hover{gap:11px}

/* ---------- 统计条 ---------- */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  margin-top:-44px;position:relative;z-index:5;
}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:20px 18px;text-align:center;
  box-shadow:var(--shadow-sm);transition:transform .3s var(--ease-bounce);
}
.stat-card:hover{transform:translateY(-5px) rotate(-1deg)}
.stat-num{font-family:var(--font-title);font-size:34px;font-weight:800;color:var(--c-primary)}
.stat-card:nth-child(2) .stat-num{color:var(--c-highlight)}
.stat-card:nth-child(3) .stat-num{color:var(--c-accent);}
.stat-card:nth-child(4) .stat-num{color:var(--c-text)}
.stat-label{font-size:13.5px;color:var(--c-text-sub);font-weight:600}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.pill{
  padding:9px 20px;border-radius:var(--r-pill);
  background:#fff;border:1.5px solid var(--c-line);
  font-size:14.5px;font-weight:700;color:var(--c-text-sub);
  transition:all .25s var(--ease-bounce);
}
.pill:hover{transform:translateY(-2px);border-color:var(--c-primary);color:var(--c-primary)}
.pill.is-on{background:var(--c-highlight);border-color:var(--c-highlight);color:#fff;box-shadow:0 8px 18px rgba(25,75,230,.26)}
.pill.is-on.chem{background:var(--c-chem);border-color:var(--c-chem);box-shadow:0 8px 18px rgba(191,100,34,.28)}
.pill.is-on.bio{background:var(--c-bio);border-color:var(--c-bio);box-shadow:0 8px 18px rgba(59,206,121,.28)}

/* ---------- 实验卡片网格 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:960px){.grid-cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid-cards{grid-template-columns:1fr}}

.card{
  position:relative;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-sm);overflow:hidden;
  display:flex;flex-direction:column;gap:14px;
  transition:transform .32s var(--ease-bounce),box-shadow .32s;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:6px;
  background:var(--accent,var(--c-primary));
}
.card:hover{transform:translateY(-7px);box-shadow:var(--shadow-md)}
.card-emoji{
  width:54px;height:54px;border-radius:18px;display:grid;place-items:center;
  font-size:27px;background:color-mix(in srgb,var(--accent,#bf6422) 14%,#fff);
  transition:transform .35s var(--ease-bounce);
}
.card:hover .card-emoji{transform:rotate(-10deg) scale(1.12)}
.card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.badge{
  padding:5px 14px;border-radius:var(--r-pill);font-size:12.5px;font-weight:800;color:#fff;
  background:var(--accent,var(--c-primary));box-shadow:0 5px 12px rgba(44,34,27,.14);
}
.card h3{font-size:18.5px;font-weight:800;line-height:1.4}
.card-desc{color:var(--c-text-sub);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13px;color:var(--c-text-sub);font-weight:600}
.card-meta b{color:var(--c-text)}
.stars{color:var(--c-primary);letter-spacing:1.5px;font-size:13px}
.stars .off{color:var(--c-line)}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}
.tag{
  font-size:12.5px;font-weight:700;padding:5px 13px;border-radius:var(--r-pill);
  background:color-mix(in srgb,var(--accent,#bf6422) 10%,#fff);
  color:var(--accent,#bf6422);border:1px solid var(--c-line);
}
.card-actions{display:flex;gap:10px;margin-top:4px}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-pill);font-weight:700;border:none;transition:transform .25s var(--ease-bounce),box-shadow .25s}
.btn-sm:hover{transform:translateY(-2px)}
.btn-view{background:var(--accent,var(--c-primary));color:#fff;box-shadow:0 8px 16px rgba(44,34,27,.16)}
.btn-keep{background:#fff;border:1.5px solid var(--c-line);color:var(--c-text-sub)}
.btn-keep.is-saved{color:var(--c-primary);border-color:var(--c-primary);background:color-mix(in srgb,var(--c-primary) 8%,#fff)}

/* ---------- 学科色类（覆盖卡片强调色） ---------- */
.chem{--accent:var(--c-chem)}
.phys{--accent:var(--c-phys)}
.bio{--accent:var(--c-bio)}

/* ---------- 详情页 ---------- */
.detail-hero{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:40px 34px;color:#fff;margin-top:26px;
  background:linear-gradient(120deg,var(--accent,#bf6422),color-mix(in srgb,var(--accent,#bf6422) 55%,#fff));
  box-shadow:var(--shadow-md);
}
.detail-hero::after{content:"";position:absolute;right:-40px;top:-40px;width:190px;height:190px;border-radius:50%;border:26px solid rgba(255,255,255,.16)}
.detail-hero .crumb{display:inline-flex;gap:8px;align-items:center;font-size:13.5px;opacity:.92;font-weight:600;margin-bottom:14px;background:rgba(255,255,255,.2);padding:6px 14px;border-radius:var(--r-pill)}
.detail-hero h1{font-size:clamp(24px,4vw,36px);font-weight:800;margin-bottom:12px;position:relative;z-index:2}
.detail-hero .hero-desc{color:rgba(255,255,255,.95);max-width:720px;position:relative;z-index:2}
.meta-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;position:relative;z-index:2}
.meta-pill{background:rgba(255,255,255,.22);border:1px solid rgba(255,255,255,.35);padding:7px 16px;border-radius:var(--r-pill);font-size:13.5px;font-weight:700;backdrop-filter:blur(4px)}

.detail-layout{display:grid;grid-template-columns:2.1fr 1fr;gap:26px;margin-top:28px}
@media (max-width:900px){.detail-layout{grid-template-columns:1fr}}

.panel{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-sm);
}
.panel + .panel{margin-top:26px}
.panel-title{font-size:20px;font-weight:800;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.panel-title .ico{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;font-size:17px;background:color-mix(in srgb,var(--accent,#bf6422) 14%,#fff)}
.panel-sub{color:var(--c-text-sub);font-size:13.5px;margin-bottom:20px}

/* 视频区 */
.video-wrap{position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--r-lg);overflow:hidden;background:#2c221b;border:1px solid var(--c-line)}
.video-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-fallback{
  position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:30px;
  background:linear-gradient(135deg,color-mix(in srgb,var(--accent,#bf6422) 22%,#fff),#fff);
  color:var(--c-text);
}
.video-fallback .big{font-size:52px;margin-bottom:8px;animation:floaty 4s ease-in-out infinite}
.video-tip{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:var(--c-text-sub);background:color-mix(in srgb,var(--c-accent) 10%,#fff);border:1px dashed color-mix(in srgb,var(--c-accent) 50%,#fff);padding:10px 14px;border-radius:14px}

/* 器材 */
.equip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
@media (max-width:600px){.equip-grid{grid-template-columns:repeat(2,1fr)}}
.equip-chip{
  display:flex;align-items:center;gap:9px;padding:11px 12px;
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-md);
  font-size:13.5px;font-weight:600;transition:all .25s var(--ease-bounce);
}
.equip-chip:hover{transform:translateY(-2px);border-color:var(--accent,var(--c-primary));background:#fff}
.equip-chip .e{font-size:17px}

/* 步骤 */
.step{position:relative;padding:0 0 22px 0;display:flex;gap:16px}
.step:not(:last-child)::before{content:"";position:absolute;left:21px;top:46px;bottom:6px;width:3px;border-radius:3px;background:color-mix(in srgb,var(--accent,#bf6422) 26%,transparent)}
.step-num{
  flex:0 0 auto;width:42px;height:42px;border-radius:15px;
  background:var(--accent,var(--c-primary));color:#fff;
  display:grid;place-items:center;font-family:var(--font-title);font-weight:800;font-size:18px;
  box-shadow:0 8px 16px rgba(44,34,27,.16);z-index:1;
}
.step-body{flex:1}
.step-title{font-size:16.5px;font-weight:800;margin-bottom:6px}
.step-content{color:var(--c-text);font-size:14.5px}
.step-tip{
  margin-top:9px;font-size:13px;color:var(--c-primary);
  background:color-mix(in srgb,var(--c-primary) 8%,#fff);
  border-left:3px solid var(--c-primary);padding:8px 12px;border-radius:8px;
  display:flex;gap:8px;align-items:flex-start;
}

/* 注意事项 */
.warn-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.warn-list li{
  display:flex;gap:12px;align-items:flex-start;padding:13px 15px;
  background:color-mix(in srgb,var(--c-primary) 7%,#fff);
  border:1px solid color-mix(in srgb,var(--c-primary) 30%,var(--c-line));
  border-radius:var(--r-md);font-size:14px;
}
.warn-list .w{flex:0 0 auto;font-size:17px}

/* 常见错误分析 */
.error-card{
  border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;margin-bottom:12px;background:var(--c-bg);
}
.error-head{
  display:flex;align-items:center;gap:11px;padding:13px 16px;cursor:pointer;
  font-weight:800;font-size:14.5px;user-select:none;
  background:#fff;transition:background .2s;
}
.error-head:hover{background:color-mix(in srgb,var(--c-primary) 6%,#fff)}
.error-head .x{
  width:26px;height:26px;border-radius:9px;background:color-mix(in srgb,var(--c-primary) 14%,#fff);
  color:var(--c-primary);display:grid;place-items:center;font-weight:800;flex:0 0 auto;
}
.error-head .chev{transition:transform .3s;margin-left:auto;color:var(--c-text-sub)}
.error-card.open .chev{transform:rotate(180deg)}
.error-body{display:none;padding:4px 18px 16px 53px;font-size:14px;color:var(--c-text-sub)}
.error-card.open .error-body{display:block;animation:fadeUp .3s ease}
.error-body p{margin-bottom:6px}
.error-body b{color:var(--c-text)}

/* 知识点胶囊（详情侧栏/检索） */
.kp-row{display:flex;flex-wrap:wrap;gap:8px}
.kp{
  font-size:13px;font-weight:700;padding:7px 15px;border-radius:var(--r-pill);
  background:color-mix(in srgb,var(--c-highlight) 9%,#fff);
  color:var(--c-highlight);border:1px solid color-mix(in srgb,var(--c-highlight) 30%,var(--c-line));
  transition:transform .25s var(--ease-bounce);
}
.kp:hover{transform:translateY(-2px) scale(1.04)}

/* 侧栏 */
.side-sticky{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}
.other-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:18px;box-shadow:var(--shadow-sm);
}
.other-item{
  display:flex;gap:12px;align-items:center;padding:10px 8px;border-radius:var(--r-md);
  transition:all .25s;border:1px solid transparent;
}
.other-item:hover{background:var(--c-bg);border-color:var(--c-line);transform:translateX(4px)}
.other-item .oe{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;font-size:20px;background:color-mix(in srgb,var(--accent,#bf6422) 14%,#fff);flex:0 0 auto}
.other-item b{font-size:14px;display:block;line-height:1.35}
.other-item span{font-size:12px;color:var(--c-text-sub)}

/* 底部导航 */
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:26px;flex-wrap:wrap}
.pager a{
  flex:1;min-width:220px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:16px 20px;box-shadow:var(--shadow-sm);
  transition:all .3s var(--ease-bounce);
}
.pager a:hover{transform:translateY(-4px);border-color:var(--accent,var(--c-primary))}
.pager .dir{font-size:12px;color:var(--c-text-sub);font-weight:700}
.pager b{display:block;margin-top:3px;font-size:15px}
.pager a.next{text-align:right}

/* ---------- 检索页 ---------- */
.search-hero{padding:56px 22px 40px;position:relative;overflow:hidden}
.search-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 260px at 20% 20%,rgba(25,75,230,.10),transparent 60%),radial-gradient(500px 260px at 85% 40%,rgba(191,100,34,.12),transparent 60%);pointer-events:none}
.search-box{
  max-width:720px;margin:0 auto;position:relative;z-index:2;
}
.search-bar{
  display:flex;align-items:center;gap:10px;background:#fff;
  border:2px solid var(--c-line);border-radius:var(--r-pill);
  padding:8px 10px 8px 22px;box-shadow:var(--shadow-md);
  transition:border-color .25s,box-shadow .25s;
}
.search-bar:focus-within{border-color:var(--c-highlight);box-shadow:0 0 0 5px rgba(25,75,230,.12),var(--shadow-md)}
.search-bar input{flex:1;border:none;outline:none;font-size:16px;font-family:inherit;background:transparent;color:var(--c-text)}
.search-bar input::placeholder{color:var(--c-text-sub)}
.search-bar .go{flex:0 0 auto}
.search-suggest{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:16px}
.suggest{
  font-size:13px;font-weight:700;color:var(--c-text-sub);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:7px 15px;transition:all .25s var(--ease-bounce);
}
.suggest:hover{color:#fff;background:var(--c-highlight);border-color:var(--c-highlight);transform:translateY(-2px)}

.filter-group{margin-bottom:18px}
.filter-group .fg-label{font-size:13px;font-weight:800;color:var(--c-text-sub);margin-bottom:9px;display:flex;align-items:center;gap:7px}

.search-result-count{color:var(--c-text-sub);font-size:14px;margin-bottom:16px;font-weight:600}
.search-result-count b{color:var(--c-highlight)}
mark{background:rgba(59,206,121,.35);border-radius:5px;padding:0 2px;color:var(--c-text)}
.no-result{
  text-align:center;padding:60px 20px;color:var(--c-text-sub);
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.no-result .nb{font-size:52px;margin-bottom:10px}

/* ---------- 收藏 ---------- */
.fav-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.fav-chip{
  padding:8px 18px;border-radius:var(--r-pill);background:#fff;border:1.5px solid var(--c-line);
  font-size:13.5px;font-weight:700;color:var(--c-text-sub);transition:all .25s;
}
.fav-chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.fav-chip .x{margin-left:6px;font-weight:800}

/* ---------- 关于 / 页脚 ---------- */
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:800px){.about-grid{grid-template-columns:1fr}}
.about-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-sm);text-align:center;transition:transform .3s var(--ease-bounce)}
.about-card:hover{transform:translateY(-6px)}
.about-emoji{width:64px;height:64px;margin:0 auto 14px;border-radius:22px;display:grid;place-items:center;font-size:32px;background:color-mix(in srgb,var(--accent,#bf6422) 14%,#fff);transition:transform .35s var(--ease-bounce)}
.about-card:hover .about-emoji{transform:rotate(-8deg) scale(1.1)}
.about-card h3{font-size:18px;margin-bottom:8px}
.about-card p{color:var(--c-text-sub);font-size:14px}

.site-footer{
  margin-top:70px;background:#2c221b;color:#f3ece4;
  border-radius:38px 38px 0 0;padding:46px 22px 30px;position:relative;overflow:hidden;
}
.site-footer::before{content:"";position:absolute;top:-90px;right:-50px;width:240px;height:240px;border-radius:50%;border:30px solid rgba(59,206,121,.12)}
.site-footer::after{content:"";position:absolute;top:-60px;left:18%;width:120px;height:120px;border-radius:50%;border:20px solid rgba(191,100,34,.14)}
.footer-inner{max-width:1180px;margin:0 auto;position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;margin-bottom:30px}
@media (max-width:720px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{font-family:var(--font-title);font-size:20px;font-weight:800;margin-bottom:10px}
.footer-brand .dot{color:var(--c-accent)}
.footer p{color:#b9a89b;font-size:14px}
.footer h4{font-size:15px;margin-bottom:12px;color:#fff}
.footer-links{list-style:none}
.footer-links li{margin-bottom:8px}
.footer-links a{color:#b9a89b;font-size:14px;transition:color .2s,padding-left .2s}
.footer-links a:hover{color:#fff;padding-left:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;text-align:center;color:#9d8b7e;font-size:13px}

/* ---------- 动画 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 面包屑 & 通用 ---------- */
.crumb-bar{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-sub);font-weight:600;margin-top:24px}
.crumb-bar a{color:var(--c-highlight)}
.crumb-bar a:hover{text-decoration:underline}
.crumb-bar .sep{color:var(--c-line)}

.back-top{
  position:fixed;right:22px;bottom:22px;width:50px;height:50px;border-radius:17px;
  background:var(--c-primary);color:#fff;display:grid;place-items:center;font-size:20px;
  box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transition:all .3s var(--ease-bounce);z-index:60;
}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-4px) scale(1.06)}

@media (max-width:640px){
  .header-inner{flex-wrap:wrap;padding:10px 16px}
  .main-nav{gap:2px}
  .nav-link{padding:8px 12px;font-size:13.5px}
  .brand-sub{display:none}
  .section{padding:36px 0}
  .stats-bar{grid-template-columns:repeat(2,1fr);margin-top:-30px}
  .detail-hero{padding:28px 22px}
  .panel{padding:20px}
  .pager a{min-width:100%}
  .hero-cta .btn{flex:1;justify-content:center}
}