/* 抖阴官方网站 - dyapp.rest 全局样式 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0a;--bg-card:#141414;--bg-hover:#1e1e1e;
  --text:#f0f0f0;--text-muted:#999;--text-dim:#666;
  --accent:#ff2d55;--accent-hover:#ff4d6d;
  --accent2:#00d4ff;--green:#00c853;
  --border:#222;--radius:8px;--radius-lg:12px;
  --shadow:0 4px 24px rgba(0,0,0,.5);
  --max-w:1200px;--header-h:64px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh}
a{color:var(--accent2);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(10,10,10,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--header-h)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--text)}
.logo img{width:36px;height:36px;border-radius:6px}
.nav-main{display:flex;gap:4px}
.nav-main a{padding:8px 16px;border-radius:var(--radius);color:var(--text-muted);font-size:.95rem;white-space:nowrap}
.nav-main a:hover,.nav-main a.active{color:var(--text);background:var(--bg-hover)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer;padding:4px}

/* Hero */
.hero{padding:60px 0 40px;text-align:center;background:linear-gradient(180deg,#111 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(1.75rem,4vw,2.5rem);margin-bottom:16px;line-height:1.3}
.hero h1 span{color:var(--accent)}
.hero-desc{font-size:1.1rem;color:var(--text-muted);max-width:720px;margin:0 auto 32px}
.btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-size:1rem;font-weight:600;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,45,85,.3);color:#fff}
.btn-outline{background:transparent;color:var(--text);border:2px solid var(--border)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* Section */
.section{padding:48px 0}
.section-title{font-size:1.75rem;margin-bottom:8px;text-align:center}
.section-subtitle{text-align:center;color:var(--text-muted);margin-bottom:36px;font-size:1rem}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.section-header h2{font-size:1.5rem;margin:0;text-align:left}
.section-link{color:var(--accent2);font-size:.9rem}

/* Feature Grid */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:border-color .2s,transform .2s}
.feature-card:hover{border-color:var(--accent);transform:translateY(-4px)}
.feature-icon{font-size:2rem;margin-bottom:12px}
.feature-card h3{font-size:1.15rem;margin-bottom:8px}
.feature-card p{color:var(--text-muted);font-size:.95rem}

/* Category Tags */
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.tag{padding:6px 16px;border-radius:20px;background:var(--bg-card);border:1px solid var(--border);color:var(--text-muted);font-size:.85rem;transition:all .2s}
.tag:hover,.tag.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Screenshot Gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.gallery-item{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:transform .2s,box-shadow .2s}
.gallery-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.gallery-item img{width:100%;aspect-ratio:9/16;object-fit:cover;object-position:top}
.gallery-caption{padding:14px 16px}
.gallery-caption h3{font-size:.95rem;margin-bottom:4px;line-height:1.4}
.gallery-caption p{font-size:.8rem;color:var(--text-muted)}

/* Content Article */
.content-article{max-width:860px;margin:0 auto}
.content-article h2{font-size:1.5rem;margin:36px 0 16px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.content-article h3{font-size:1.2rem;margin:24px 0 12px;color:var(--accent2)}
.content-article p{margin-bottom:16px;color:var(--text-muted);text-align:justify}
.content-article ul,.content-article ol{margin:12px 0 16px 24px;color:var(--text-muted)}
.content-article li{margin-bottom:8px}
.content-article strong{color:var(--text)}

/* Stats Bar */
.stats-bar{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;padding:32px 0}
.stat-item{text-align:center;padding:20px;background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border)}
.stat-num{font-size:1.75rem;font-weight:700;color:var(--accent)}
.stat-label{font-size:.85rem;color:var(--text-muted);margin-top:4px}

/* Download Section */
.download-section{background:linear-gradient(135deg,#1a0a10 0%,#0a0a1a 100%);border:1px solid var(--border);border-radius:var(--radius-lg);padding:48px 32px;text-align:center;margin:48px 0}
.download-section h2{margin-bottom:12px}
.download-section p{color:var(--text-muted);margin-bottom:24px;max-width:600px;margin-left:auto;margin-right:auto}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border);padding:20px 0}
.faq-item h3{font-size:1.05rem;margin-bottom:8px;cursor:pointer;color:var(--text)}
.faq-item p{color:var(--text-muted);font-size:.95rem}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:.85rem;color:var(--text-dim)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb span{margin:0 8px}

/* Page Header */
.page-header{padding:40px 0 24px;text-align:center;border-bottom:1px solid var(--border);margin-bottom:32px}
.page-header h1{font-size:2rem;margin-bottom:8px}
.page-header p{color:var(--text-muted)}

/* Footer */
.site-footer{background:#050505;border-top:1px solid var(--border);padding:48px 0 24px;margin-top:48px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{color:var(--text-muted);font-size:.9rem;margin-top:12px;line-height:1.6}
.footer-col h4{font-size:.95rem;margin-bottom:16px;color:var(--text)}
.footer-col a{display:block;color:var(--text-muted);font-size:.875rem;padding:4px 0;transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{font-size:.8rem;color:var(--text-dim);margin:0}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--accent)}

/* Error Pages */
.error-page{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px 20px}
.error-code{font-size:6rem;font-weight:800;color:var(--accent);line-height:1}
.error-page h1{font-size:1.5rem;margin:16px 0 8px}
.error-page p{color:var(--text-muted);margin-bottom:24px}

/* Internal Links Box */
.internal-links{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;margin:32px 0}
.internal-links h3{font-size:1.1rem;margin-bottom:12px}
.internal-links ul{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px}
.internal-links a{color:var(--accent2);font-size:.9rem}
.internal-links a:hover{color:var(--accent)}

/* Responsive */
@media(max-width:768px){
  .nav-main{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:var(--bg);flex-direction:column;padding:12px;border-bottom:1px solid var(--border)}
  .nav-main.open{display:flex}
  .nav-toggle{display:block}
  .hero{padding:40px 0 32px}
  .gallery{grid-template-columns:repeat(2,1fr);gap:12px}
  .gallery-item img{aspect-ratio:9/14}
  .section{padding:32px 0}
  /* 页脚移动端 */
  .site-footer{padding:28px 0 calc(20px + env(safe-area-inset-bottom,0px));margin-top:32px}
  .footer-grid{grid-template-columns:repeat(3,1fr);gap:20px 12px;margin-bottom:20px}
  .footer-brand{grid-column:1/-1;text-align:center;padding-bottom:20px;margin-bottom:4px;border-bottom:1px solid var(--border)}
  .footer-brand .logo{justify-content:center}
  .footer-brand p{font-size:.85rem;max-width:420px;margin:12px auto 0;line-height:1.55}
  .footer-col h4{font-size:.875rem;margin-bottom:8px;text-align:center;color:var(--text-muted);font-weight:600}
  .footer-col a{text-align:center;padding:8px 4px;font-size:.8125rem;min-height:36px;display:flex;align-items:center;justify-content:center}
  .footer-bottom{flex-direction:column;text-align:center;gap:10px;padding-top:16px}
  .footer-bottom p{font-size:.75rem;line-height:1.6;word-break:break-word}
}
@media(max-width:480px){
  .gallery{grid-template-columns:1fr}
  .btn{padding:12px 24px;font-size:.9rem}
  /* 页脚小屏 */
  .site-footer{padding:24px 0 calc(16px + env(safe-area-inset-bottom,0px))}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:16px 10px}
  .footer-brand{padding-bottom:16px;margin-bottom:0}
  .footer-brand p{
    font-size:.8rem;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .footer-col:nth-child(2),
  .footer-col:nth-child(3){padding:12px 8px;background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border)}
  .footer-col:last-child{grid-column:1/-1;display:flex;flex-wrap:wrap;justify-content:center;gap:8px;padding:14px 12px;background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border)}
  .footer-col:last-child h4{width:100%;margin-bottom:4px}
  .footer-col:last-child a{
    display:inline-flex;
    width:auto;
    min-height:32px;
    padding:6px 14px;
    background:var(--bg-hover);
    border-radius:20px;
    border:1px solid var(--border);
    font-size:.75rem;
    white-space:nowrap;
  }
  .footer-bottom p:first-child{max-width:280px;margin:0 auto}
}