/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
:root{
  --ink:#141827;
  --ink-2:#3a4055;
  --muted:#7c839b;
  --line:rgba(20,24,39,.08);
  --brand-1:#6a11cb;
  --brand-2:#2575fc;
  --radius:16px;
  --shadow-sm:0 2px 10px rgba(20,24,39,.05);
  --shadow-md:0 12px 34px rgba(20,24,39,.10);
}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
  margin:0;
  overflow-x:hidden;
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(1200px 620px at 8% -12%, rgba(106,17,203,.10), transparent 62%),
    radial-gradient(1000px 600px at 100% 0%, rgba(37,117,252,.10), transparent 58%),
    linear-gradient(180deg,#ffffff 0%,#f7f8fc 45%,#edf0f9 100%);
  background-attachment:fixed;
}
img{max-width:100%}
a{color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:linear-gradient(120deg,#141b34 0%,#1c2450 45%,#2a1a4d 100%);
  box-shadow:0 8px 28px rgba(11,15,33,.30);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;height:70px;
}
.logo{
  display:flex;align-items:center;gap:11px;
  text-decoration:none;flex:0 0 auto;
}
.logo-mark{
  position:relative;width:32px;height:32px;border-radius:10px;
  background:linear-gradient(135deg,#7b5bff,#00d4ff);
  box-shadow:0 0 18px rgba(123,91,255,.65);
}
.logo-mark::after{
  content:"";position:absolute;inset:9px;border-radius:3px;background:#fff;
}
.logo-text{
  font-size:19px;font-weight:800;letter-spacing:2px;
  background:linear-gradient(90deg,#ffffff,#c9d8ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.main-nav ul{
  list-style:none;display:flex;align-items:center;gap:6px;
  margin:0;padding:0;
}
.main-nav a{
  display:block;padding:8px 14px;border-radius:10px;
  font-size:14.5px;font-weight:500;white-space:nowrap;
  color:rgba(255,255,255,.76);text-decoration:none;
  transition:color .25s,background .25s,box-shadow .25s;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.10)}
.main-nav a.active{
  color:#fff;
  background:linear-gradient(135deg,#6a11cb,#2575fc);
  box-shadow:0 6px 16px rgba(106,17,203,.45);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border-radius:12px;cursor:pointer;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.18);
  transition:background .25s;
}
.nav-toggle:hover{background:rgba(255,255,255,.18)}
.nav-toggle span{
  display:block;width:20px;height:2px;border-radius:2px;
  background:#fff;transition:transform .3s,opacity .3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===================== Hero ===================== */
.hero{padding:36px 0 0}
.hero-inner{
  position:relative;overflow:hidden;
  border-radius:26px;
  padding:54px 48px;
  color:#fff;
  background:linear-gradient(120deg,#1b1b3a 0%,#2b1e5c 42%,#123a6b 100%);
  box-shadow:0 26px 64px rgba(19,23,52,.30);
}
.hero-inner::before{
  content:"";position:absolute;right:-130px;top:-190px;
  width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,212,255,.55),transparent 65%);
}
.hero-inner::after{
  content:"";position:absolute;left:-110px;bottom:-210px;
  width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,95,109,.45),transparent 65%);
}
.hero h1{
  position:relative;z-index:1;
  margin:0 0 12px;
  font-size:clamp(26px,4.2vw,44px);
  letter-spacing:3px;
  line-height:1.25;
}
.hero p{
  position:relative;z-index:1;
  margin:0;
  font-size:clamp(13.5px,1.6vw,17px);
  letter-spacing:.8px;
  color:rgba(255,255,255,.72);
}

/* ===================== 通用区块 ===================== */
.section{padding:56px 0 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:24px;
}
.section-title{
  position:relative;
  margin:0;padding-left:17px;
  font-size:22px;font-weight:800;letter-spacing:1.5px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:50%;
  width:5px;height:22px;border-radius:3px;
  transform:translateY(-50%);
  background:linear-gradient(180deg,#6a11cb,#2575fc);
}
.section-desc{
  margin:0;font-size:13.5px;letter-spacing:.6px;color:var(--muted);
}

/* ===================== 文章列表通用 ===================== */
.post-list{
  list-style:none;margin:0;padding:0;
  display:grid;gap:12px;
  counter-reset:idx;
}
.post-list.grid-3{grid-template-columns:repeat(3,1fr)}
.post-list.grid-2{grid-template-columns:repeat(2,1fr)}

.post-item{
  counter-increment:idx;
  display:flex;align-items:flex-start;gap:12px;
  min-width:0;
  padding:13px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:rgba(106,17,203,.22);
}
.post-item::before{
  content:counter(idx,decimal-leading-zero);
  flex:0 0 auto;
  width:34px;height:34px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  font-size:13px;font-weight:800;letter-spacing:.5px;
  font-variant-numeric:tabular-nums;
  color:#fff;
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  box-shadow:0 6px 14px rgba(106,17,203,.24);
}
.post-link{
  display:block;flex:1 1 auto;min-width:0;
  text-decoration:none;color:inherit;
}
.post-title{
  display:block;
  font-size:14.8px;font-weight:600;line-height:1.55;
  color:#1b2033;
  overflow-wrap:anywhere;
  word-break:break-word;
  transition:color .2s;
}
.post-link:hover .post-title{color:var(--brand-1)}
.post-meta{
  display:block;margin-top:5px;
  font-size:12.5px;letter-spacing:.4px;color:#9299ad;
}

/* 猜你喜欢：圆形渐变徽标 */
.like-list .post-item::before{
  border-radius:50%;
  background:linear-gradient(135deg,#e91e63,#7b2ff7);
  box-shadow:0 6px 14px rgba(123,47,247,.26);
}

/* ===================== 四个栏目 ===================== */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.cat-card{
  position:relative;overflow:hidden;
  padding:24px 20px 20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow-sm);
}
.cat-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:5px;
  background:linear-gradient(90deg,var(--accent),rgba(255,255,255,0) 88%);
}
.cat-title{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:12px;
  margin:0 0 16px;
  font-size:17px;font-weight:800;letter-spacing:1.2px;
  color:var(--accent);
}
.cat-title::after{
  content:"";flex:1 1 auto;height:1px;
  background:linear-gradient(90deg,var(--accent-soft),transparent);
}
.cat-list .post-item{
  padding:10px 12px;
  background:#fbfcfe;
  border-color:rgba(20,24,39,.05);
  box-shadow:none;
}
.cat-list .post-item:hover{
  background:#fff;
  border-color:var(--accent-soft);
  box-shadow:0 8px 20px rgba(20,24,39,.07);
}
.cat-list .post-item::before{
  width:26px;height:26px;border-radius:8px;
  font-size:11.5px;
  color:var(--accent);
  background:var(--accent-soft);
  box-shadow:none;
}
.cat-list .post-title{font-size:14px;font-weight:500}

/* 预设十种栏目配色 */
.cat-grid > .cat-card:nth-child(10n+1){--accent:#6a11cb;--accent-soft:#efe3ff}
.cat-grid > .cat-card:nth-child(10n+2){--accent:#2575fc;--accent-soft:#e3efff}
.cat-grid > .cat-card:nth-child(10n+3){--accent:#00a98f;--accent-soft:#d9f6f0}
.cat-grid > .cat-card:nth-child(10n+4){--accent:#e63946;--accent-soft:#ffe3e5}
.cat-grid > .cat-card:nth-child(10n+5){--accent:#f7971e;--accent-soft:#fff0d9}
.cat-grid > .cat-card:nth-child(10n+6){--accent:#e91e63;--accent-soft:#ffe2ee}
.cat-grid > .cat-card:nth-child(10n+7){--accent:#00b4d8;--accent-soft:#dcf5fb}
.cat-grid > .cat-card:nth-child(10n+8){--accent:#7b2ff7;--accent-soft:#eee4ff}
.cat-grid > .cat-card:nth-child(10n+9){--accent:#16a085;--accent-soft:#dcf5ef}
.cat-grid > .cat-card:nth-child(10n+10){--accent:#ff6a00;--accent-soft:#ffe8db}

/* ===================== 图文精选 ===================== */
.gallery{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:18px;
}
.gallery-item{
  display:block;overflow:hidden;
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-sm);
  text-decoration:none;
  transition:transform .3s ease,box-shadow .3s ease;
}
.gallery-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.gallery-thumb{
  display:block;overflow:hidden;
  background:linear-gradient(135deg,#e9edf7,#dfe6f5);
}
.gallery-thumb img{
  display:block;width:100%;height:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .6s ease;
}
.gallery-item:hover .gallery-thumb img{transform:scale(1.07)}
.gallery-title{
  display:block;
  padding:12px 14px 14px;
  font-size:14px;font-weight:600;line-height:1.5;
  color:#1b2033;
  overflow-wrap:anywhere;
  word-break:break-word;
  transition:color .2s;
}
.gallery-item:hover .gallery-title{color:var(--brand-1)}

/* ===================== 热门 / 推荐 ===================== */
.dual-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.panel{
  padding:24px 20px 20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow-sm);
}
.panel-head{
  display:flex;align-items:center;gap:12px;
  margin:0 0 16px;
  font-size:17px;font-weight:800;letter-spacing:1.2px;
}
.panel-head::after{
  content:"";flex:1 1 auto;height:1px;
  background:linear-gradient(90deg,rgba(20,24,39,.10),transparent);
}
.panel--hot .panel-head{color:#ff4d5e}
.panel--rec .panel-head{color:#00997f}

.hot-list .post-item::before{
  background:linear-gradient(135deg,#ff5f6d,#ffc371);
  box-shadow:0 6px 14px rgba(255,95,109,.28);
}
.rec-list .post-item::before{
  background:linear-gradient(135deg,#00b09b,#2575fc);
  box-shadow:0 6px 14px rgba(0,176,155,.25);
}
.panel .post-item{
  padding:11px 13px;
  background:#fbfcfe;
  border-color:rgba(20,24,39,.05);
  box-shadow:none;
}
.panel .post-item:hover{
  background:#fff;
  box-shadow:0 8px 20px rgba(20,24,39,.07);
}
.panel .post-title{font-size:14px;font-weight:500}

/* ===================== 页脚 ===================== */
.site-footer{
  margin-top:72px;
  padding:36px 0;
  color:rgba(255,255,255,.66);
  background:linear-gradient(120deg,#141b34 0%,#1c2450 50%,#2a1a4d 100%);
}
.footer-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px;
}
.footer-brand{margin:0;font-size:13.5px;letter-spacing:.5px}
.footer-brand a{
  color:#7fd4ff;font-weight:700;text-decoration:none;
  border-bottom:1px solid rgba(127,212,255,.45);
  transition:color .25s,border-color .25s;
}
.footer-brand a:hover{color:#fff;border-color:#fff}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;margin:0}
.footer-links a{
  font-size:13.5px;text-decoration:none;color:rgba(255,255,255,.62);
  transition:color .25s;
}
.footer-links a:hover{color:#fff}

/* ===================== 响应式 ===================== */
@media (max-width:1100px){
  .gallery{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:980px){
  .post-list.grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;left:0;right:0;top:70px;
    display:none;
    padding:12px 20px 20px;
    background:linear-gradient(150deg,#1b2347,#2a1a4d);
    border-top:1px solid rgba(255,255,255,.08);
    box-shadow:0 22px 40px rgba(8,12,28,.45);
  }
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px}
  .main-nav a{padding:11px 14px;font-size:15px;border-radius:12px}

  .hero{padding-top:24px}
  .hero-inner{padding:38px 24px;border-radius:20px}
  .section{padding:42px 0 0}
  .section-head{margin-bottom:20px}
  .cat-grid,
  .dual-grid{grid-template-columns:1fr}
  .post-list.grid-3,
  .post-list.grid-2{grid-template-columns:1fr}
  .site-footer{margin-top:52px;padding:28px 0}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:900px){
  .gallery{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .hot-list .post-meta,
  .rec-list .post-meta{display:none}
}
@media (max-width:640px){
  .section-head{flex-direction:column;align-items:flex-start;gap:6px}
  .section-title{font-size:19px}
  .post-item{padding:12px 13px;gap:10px}
  .post-item::before{width:30px;height:30px;border-radius:10px;font-size:12px}
  .post-title{font-size:14.2px}
}
@media (max-width:560px){
  .gallery{grid-template-columns:1fr;gap:16px}
  .gallery-thumb img{aspect-ratio:16/10}
  .panel{padding:20px 16px 16px}
  .cat-card{padding:20px 16px 16px}
}