/* ============ 蕲春网址导航 · 仿 AMZ123 风格 ============ */
:root{
  --brand:#ff6a00; --brand-2:#ff8f3c; --brand-d:#e85f00;
  --ink:#1f2329; --sub:#8a919f; --line:#eef0f3; --bg:#f4f5f7; --card:#fff;
  --radius:10px; --shadow:0 1px 2px rgba(0,0,0,.05); --shadow-h:0 8px 24px rgba(255,106,0,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1440px;margin:0 auto;padding:0 24px}

/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
.topbar__inner{display:flex;align-items:center;gap:20px;height:60px}
.brand{display:flex;align-items:center;gap:8px;font-size:19px;font-weight:800;white-space:nowrap}
.brand__ico{font-size:22px}
.brand__text{background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.topnav{display:flex;gap:4px;flex:1;overflow:hidden}
.topnav a{padding:6px 12px;border-radius:6px;color:#4b5563;font-weight:500;white-space:nowrap}
.topnav a:hover{color:var(--brand);background:#fff5ef}
.topnav a.active{color:var(--brand)}
.topsearch{display:flex;align-items:center;background:#f2f3f5;border-radius:20px;overflow:hidden;height:36px}
.topsearch input{border:0;background:transparent;padding:0 14px;width:180px;outline:none;font-size:13px}
.topsearch button{border:0;background:transparent;cursor:pointer;padding:0 12px;height:100%;font-size:15px}
.topsearch button:hover{color:var(--brand)}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;padding:44px 0 40px;text-align:center}
.hero__title{margin:0 0 6px;font-size:32px;font-weight:800;letter-spacing:2px}
.hero__sub{margin:0 0 22px;opacity:.95;font-size:15px}
.hero__search{display:flex;max-width:640px;margin:0 auto;background:#fff;border-radius:28px;padding:6px;box-shadow:0 10px 30px rgba(0,0,0,.15)}
.hero__search input{flex:1;border:0;outline:none;padding:0 20px;font-size:15px;background:transparent;color:var(--ink)}
.hero__search button{border:0;cursor:pointer;background:var(--brand);color:#fff;font-weight:700;padding:0 30px;border-radius:22px;font-size:15px;height:44px}
.hero__search button:hover{background:var(--brand-d)}
.hero__hot{margin-top:16px;font-size:13px;opacity:.95;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero__hot a{opacity:.9}
.hero__hot a:hover{opacity:1;text-decoration:underline}

/* ---------- 布局 ---------- */
.layout{display:flex;gap:20px;align-items:flex-start;padding-top:22px;padding-bottom:32px}
.main{flex:1;min-width:0}

/* 左侧分类导航 */
.catnav{width:184px;flex-shrink:0;position:sticky;top:76px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;box-shadow:var(--shadow)}
.catnav__title{font-size:13px;color:var(--sub);padding:6px 8px;font-weight:600}
.catnav__list{list-style:none;margin:0;padding:0}
.catnav__list a{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;color:#4b5563}
.catnav__list a:hover{background:#fff5ef;color:var(--brand)}
.catnav__ico{font-size:16px;width:20px;text-align:center}
.catnav__name{flex:1;font-weight:500}
.catnav__count{font-size:12px;color:#c0c4cc}

/* ---------- 分区 ---------- */
.navsec{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:18px;box-shadow:var(--shadow);scroll-margin-top:76px}
.navsec__head{display:flex;align-items:center;gap:10px}
.navsec__title{margin:0;font-size:17px;font-weight:700;display:flex;align-items:center;gap:8px}
.navsec__ico{font-size:18px}
.navsec__meta{font-size:12px;color:var(--sub);background:#f2f3f5;padding:2px 8px;border-radius:10px}
.navsec__more{margin-left:auto;font-size:13px;color:var(--sub)}
.navsec__more:hover{color:var(--brand)}
.navsec__desc{color:var(--sub);font-size:13px;margin:8px 0 0}

/* 卡片网格 */
.nav-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin-top:14px}
.nav-card{display:flex;gap:10px;align-items:center;padding:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.18s}
.nav-card:hover{border-color:var(--brand);box-shadow:var(--shadow-h);transform:translateY(-2px)}
.nav-card__logo{width:40px;height:40px;border-radius:9px;flex-shrink:0;overflow:hidden;display:flex;align-items:center;justify-content:center;background:#f2f3f5}
.nav-card__logo img{width:100%;height:100%;object-fit:contain;padding:5px;background:#fff}
.nav-card__logo--letter{color:#fff;font-size:20px;font-weight:700}
.nav-card__body{min-width:0;display:flex;flex-direction:column}
.nav-card__name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-card__desc{color:var(--sub);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}

/* ---------- 右侧栏 ---------- */
.sidebar{width:280px;flex-shrink:0;position:sticky;top:76px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:16px;box-shadow:var(--shadow)}
.side-card__title{font-weight:700;font-size:15px;margin-bottom:10px}
.hotlist{list-style:none;margin:0;padding:0}
.hotlist li{display:flex;align-items:center;gap:10px;padding:6px 0}
.hotlist a{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#4b5563}
.hotlist a:hover{color:var(--brand)}
.hotlist__rank{width:20px;height:20px;border-radius:5px;background:#f2f3f5;color:var(--sub);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hotlist__rank.rank-1{background:#ff6a00;color:#fff}
.hotlist__rank.rank-2{background:#ff9a3c;color:#fff}
.hotlist__rank.rank-3{background:#ffc07a;color:#fff}
.side-links{display:flex;flex-wrap:wrap;gap:8px}
.side-links a{background:#f2f3f5;padding:6px 12px;border-radius:16px;font-size:13px;color:#4b5563}
.side-links a:hover{background:var(--brand);color:#fff}
.today{text-align:center;padding:6px 0}
.today__date{font-size:20px;font-weight:800;color:var(--brand)}
.today__week{color:var(--sub);margin:2px 0 10px}
.today__note{font-size:13px;color:#4b5563}

/* ---------- 面包屑 / 详情 / 分页 ---------- */
.crumb{font-size:13px;color:var(--sub);margin-bottom:14px}
.crumb a:hover{color:var(--brand)}
.crumb span{margin:0 6px;color:#c0c4cc}
.detail{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.detail__head{display:flex;gap:14px;align-items:center}
.detail__logo{width:56px;height:56px;border-radius:12px;overflow:hidden;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.detail__logo--letter{color:#fff;font-size:28px;font-weight:700}
.detail__title{margin:0;font-size:22px}
.detail__url{color:var(--brand);font-size:13px}
.detail__visit{display:inline-block;margin:16px 0;background:var(--brand);color:#fff;padding:10px 22px;border-radius:22px;font-weight:700}
.detail__visit:hover{background:var(--brand-d)}
.detail__body{color:#374151;line-height:1.9;margin-top:8px}
.detail__body img{border-radius:8px;margin:10px 0}
.pager{margin-top:16px;display:flex;gap:10px;justify-content:center}
.pager a,.pager .current{padding:6px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:#4b5563}
.pager .current{background:var(--brand);color:#fff;border-color:var(--brand)}
.pager a:hover{color:var(--brand);border-color:var(--brand)}

/* ---------- 空态 / 页脚 / 回顶 ---------- */
.empty{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:60px 20px;text-align:center;color:var(--sub)}
.empty--404{padding:80px 20px}
.empty__code{font-size:64px;font-weight:800;color:var(--brand);letter-spacing:4px}
.empty a{color:var(--brand);margin:0 4px}
.footer{background:#fff;border-top:1px solid var(--line);margin-top:10px;padding:34px 0 20px}
.footer__cols{display:flex;gap:40px;flex-wrap:wrap}
.footer__col--about{max-width:280px}
.footer__brand{font-size:18px;font-weight:800;color:var(--brand);margin-bottom:8px}
.footer__desc{color:var(--sub);font-size:13px}
.footer__title{font-weight:700;margin-bottom:10px}
.footer__col ul{list-style:none;margin:0;padding:0}
.footer__col li{margin:6px 0}
.footer__col a{color:#6b7280;font-size:13px}
.footer__col a:hover{color:var(--brand)}
.footer__bar{border-top:1px solid var(--line);margin-top:24px;padding-top:16px;color:var(--sub);font-size:13px;text-align:center}
.footer__bar a{color:var(--brand)}
.footer__links{margin-top:10px}
.footer__links a{display:inline-block;margin-right:14px;color:var(--brand);font-size:13px}
/* 详情操作 & 纠错 */
.detail__meta{min-width:0}
.detail__actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:16px 0}
.detail__fix{color:var(--sub);font-size:13px;border:1px solid var(--line);padding:9px 16px;border-radius:22px}
.detail__fix:hover{color:var(--brand);border-color:var(--brand)}
.navsec--related{margin-top:18px}
/* 收录/纠错 评论表单 */
.cmt{margin-top:24px;border-top:1px solid var(--line);padding-top:18px}
.cmt__title{font-size:16px;margin:0 0 14px}
.cmt__form{background:#fafbfc;border:1px solid var(--line);border-radius:10px;padding:16px}
.cmt__row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:10px}
.cmt__form input,.cmt__form textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px;font-family:inherit;outline:none;background:#fff}
.cmt__form input:focus,.cmt__form textarea:focus{border-color:var(--brand)}
.cmt__submit{margin-top:12px;background:var(--brand);color:#fff;border:0;border-radius:22px;padding:10px 30px;font-weight:700;cursor:pointer}
.cmt__submit:hover{background:var(--brand-d)}
.cmt__list{list-style:none;margin:18px 0 0;padding:0}
.cmt__item{border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin-bottom:10px}
.cmt__meta{font-size:12px;color:var(--sub);margin-bottom:6px}
.cmt__author{font-weight:600;color:var(--ink)}
.cmt__closed{color:var(--sub)}
@media(max-width:560px){.cmt__row{grid-template-columns:1fr}}
.footer__sep{margin:0 8px;color:#d0d4da}
.backtop{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:var(--shadow-h);opacity:0;pointer-events:none;transition:.2s;z-index:60}
.backtop.show{opacity:1;pointer-events:auto}
.backtop:hover{background:var(--brand-d)}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){.sidebar{display:none}}
@media(max-width:860px){
  .catnav{display:none}
  .topnav{display:none}
  .hero__title{font-size:26px}
  .nav-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
}
@media(max-width:520px){
  .topsearch input{width:120px}
  .brand__text{font-size:17px}
  .nav-grid{grid-template-columns:1fr 1fr;gap:8px}
  .nav-card{padding:10px}
  .nav-card__logo{width:34px;height:34px}
  .hero{padding:30px 0}
  .hero__search button{padding:0 18px}
}