/* ========== 全局基础 ========== */
:root{
  --bg:#0f1226;
  --bg-soft:#171a35;
  --card:#1d2142;
  --primary:#ff5e78;
  --primary-2:#8a5cff;
  --accent:#ffd166;
  --text:#f4f5ff;
  --muted:#a7abc9;
  --line:rgba(255,255,255,.08);
  --radius:16px;
  --shadow:0 20px 50px rgba(0,0,0,.35);
  --grad:linear-gradient(120deg,#ff5e78 0%,#8a5cff 60%,#4ecdc4 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1200px,92%);margin:0 auto}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.85rem 2rem;border-radius:999px;border:none;cursor:pointer;
  font-weight:700;font-size:1rem;transition:.3s;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px rgba(255,94,120,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(138,92,255,.45)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.section{padding:5rem 0}
.section-head{text-align:center;margin-bottom:3rem}
.section-head .tag{color:var(--accent);letter-spacing:.35em;font-size:.8rem;text-transform:uppercase}
.section-head h2{font-size:clamp(1.6rem,3.5vw,2.4rem);margin:.4rem 0}
.section-head p{color:var(--muted);max-width:640px;margin:0 auto}

/* ========== 导航 ========== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(15,18,38,.85);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.navbar{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{font-size:1.35rem;font-weight:900}
.brand .grad-text{font-size:1.35rem}
.nav-links{display:flex;gap:2rem;align-items:center}
.nav-links a{color:var(--muted);font-size:.95rem;position:relative;transition:.25s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;
  background:var(--grad);transition:.3s;border-radius:2px;
}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer}

/* ========== Hero ========== */
.hero{
  position:relative;overflow:hidden;
  padding:6rem 0 5rem;
  background:
    radial-gradient(600px 300px at 15% 20%,rgba(255,94,120,.25),transparent 60%),
    radial-gradient(700px 350px at 85% 30%,rgba(138,92,255,.28),transparent 60%),
    var(--bg);
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:center}
.hero h1{font-size:clamp(2rem,4.5vw,3.2rem);line-height:1.25;margin-bottom:1rem}
.hero p.lead{color:var(--muted);font-size:1.08rem;margin-bottom:2rem;max-width:540px}
.hero-badges{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:1.6rem}
.hero-badges span{
  font-size:.8rem;padding:.3rem .9rem;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--muted);
}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero-art{position:relative}
.hero-art img{
  border-radius:24px;box-shadow:var(--shadow);
  transform:rotate(2deg);animation:float 6s ease-in-out infinite;
}
.hero-stats{display:flex;gap:2.4rem;margin-top:2.6rem}
.hero-stats strong{font-size:1.6rem;display:block}
.hero-stats span{color:var(--muted);font-size:.85rem}
@keyframes float{0%,100%{transform:rotate(2deg) translateY(0)}50%{transform:rotate(2deg) translateY(-14px)}}

/* ========== 卡片栅格 ========== */
.grid{display:grid;gap:1.6rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.35s;
}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:rgba(255,94,120,.4)}
.card img{aspect-ratio:3/4;object-fit:cover;width:100%}
.card-body{padding:1.1rem 1.2rem 1.3rem}
.card-body h3{font-size:1.05rem;margin-bottom:.3rem}
.card-body p{color:var(--muted);font-size:.88rem}
.card .meta{display:flex;justify-content:space-between;color:var(--accent);font-size:.78rem;margin-top:.7rem}
.badge-cat{
  display:inline-block;font-size:.72rem;color:#fff;background:var(--grad);
  padding:.15rem .7rem;border-radius:999px;margin-bottom:.5rem;
}

/* ========== 特性 ========== */
.features{background:var(--bg-soft)}
.feature-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:2rem 1.6rem;text-align:center;transition:.35s;
}
.feature-item:hover{transform:translateY(-6px);border-color:rgba(138,92,255,.5);box-shadow:var(--shadow)}
.feature-item .icon{
  width:64px;height:64px;margin:0 auto 1.1rem;border-radius:18px;
  display:flex;align-items:center;justify-content:center;font-size:1.7rem;
  background:linear-gradient(135deg,rgba(255,94,120,.2),rgba(138,92,255,.2));
}
.feature-item h3{margin-bottom:.5rem;font-size:1.1rem}
.feature-item p{color:var(--muted);font-size:.9rem}

/* ========== CTA ========== */
.cta{
  text-align:center;padding:5.5rem 0;
  background:
    radial-gradient(500px 250px at 50% 0,rgba(255,94,120,.22),transparent 65%),
    var(--bg-soft);
}
.cta h2{font-size:clamp(1.6rem,3.5vw,2.4rem);margin-bottom:1rem}
.cta p{color:var(--muted);margin-bottom:2rem}

/* ========== 页脚 ========== */
.site-footer{border-top:1px solid var(--line);background:#0b0d1f;padding:3.5rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem}
.footer-grid h4{margin-bottom:1rem;font-size:1rem}
.footer-grid a{display:block;color:var(--muted);font-size:.88rem;margin-bottom:.5rem;transition:.25s}
.footer-grid a:hover{color:var(--primary)}
.footer-grid p{color:var(--muted);font-size:.88rem}
.copyright{text-align:center;color:var(--muted);font-size:.82rem;border-top:1px solid var(--line);padding-top:1.4rem}

/* ========== 子页面通用 ========== */
.page-hero{
  padding:5rem 0 3.5rem;text-align:center;
  background:
    radial-gradient(500px 240px at 50% 0,rgba(138,92,255,.25),transparent 65%),
    var(--bg);
}
.page-hero h1{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:.8rem}
.page-hero p{color:var(--muted);max-width:620px;margin:0 auto}
.prose{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:2.4rem;color:var(--muted)}
.prose h2{color:var(--text);margin:1.8rem 0 .8rem;font-size:1.35rem}
.prose h2:first-child{margin-top:0}
.prose h3{color:var(--text);margin:1.4rem 0 .6rem;font-size:1.1rem}
.prose p{margin-bottom:1rem}
.prose ul{padding-left:1.2rem;list-style:disc;margin-bottom:1rem}

/* FAQ */
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:1rem;overflow:hidden}
.faq-item summary{
  cursor:pointer;padding:1.1rem 1.4rem;font-weight:700;list-style:none;
  display:flex;justify-content:space-between;align-items:center;
}
.faq-item summary::after{content:"+";color:var(--primary);font-size:1.3rem;transition:.3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 1.4rem 1.2rem;color:var(--muted);font-size:.92rem}

/* 表单 */
.form{display:grid;gap:1.1rem}
.form label{font-size:.9rem;color:var(--muted)}
.form input,.form textarea,.form select{
  width:100%;padding:.85rem 1rem;border-radius:12px;border:1px solid var(--line);
  background:var(--bg-soft);color:var(--text);font-family:inherit;font-size:.95rem;
}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--primary)}

/* 新闻列表 */
.news-item{
  display:grid;grid-template-columns:220px 1fr;gap:1.4rem;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.3s;margin-bottom:1.4rem;
}
.news-item:hover{transform:translateX(6px);border-color:rgba(255,94,120,.4)}
.news-item img{height:100%;object-fit:cover}
.news-item .nbody{padding:1.2rem 1.4rem}
.news-item .nbody h3{margin-bottom:.4rem;font-size:1.1rem}
.news-item .nbody p{color:var(--muted);font-size:.9rem}
.news-item .date{color:var(--accent);font-size:.78rem;margin-top:.6rem;display:block}

/* 排行榜 */
.rank-list{counter-reset:rank}
.rank-item{display:flex;gap:1rem;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.9rem 1.1rem;margin-bottom:.8rem;transition:.3s}
.rank-item:hover{border-color:rgba(255,209,102,.5)}
.rank-item::before{
  counter-increment:rank;content:counter(rank);
  width:34px;height:34px;flex:none;border-radius:10px;
  display:flex;align-items:center;justify-content:center;font-weight:900;
  background:var(--grad);color:#fff;
}
.rank-item img{width:52px;height:66px;object-fit:cover;border-radius:8px}
.rank-item .rinfo{flex:1}
.rank-item .rinfo h4{font-size:.95rem}
.rank-item .rinfo span{color:var(--muted);font-size:.78rem}
.rank-item .hot{color:var(--primary);font-size:.8rem;font-weight:700}

/* 动画 */
.reveal{opacity:0;transform:translateY(30px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.visible{opacity:1;transform:none}

/* ========== 响应式 ========== */
@media (max-width:960px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr}
  .hero-art{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .nav-links{
    position:fixed;inset:68px 0 auto 0;flex-direction:column;gap:0;
    background:rgba(15,18,38,.98);border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:.35s;
  }
  .nav-links.open{max-height:420px}
  .nav-links a{display:block;padding:1rem 5%;width:100%}
  .nav-toggle{display:block}
  .grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}
  .news-item{grid-template-columns:1fr}
  .news-item img{aspect-ratio:16/9}
  .hero-stats{gap:1.4rem}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:3.2rem 0}
}