/* ============ jitapu 站点全局样式（响应式） ============ */
:root{
  --primary:#d97706;      /* 琥珀橙 */
  --primary-dark:#b45309;
  --bg:#f6f7f9;
  --card:#ffffff;
  --text:#1f2937;
  --text-sub:#6b7280;
  --border:#e5e7eb;
  --radius:10px;
  --shadow:0 2px 8px rgba(0,0,0,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--text);font-size:15px;line-height:1.6;
}
a{color:var(--primary);text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 16px}

/* ---------- 顶部导航 ---------- */
.site-header{
  background:#fff;border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;box-shadow:0 1px 4px rgba(0,0,0,.04);
}
.header-inner{display:flex;align-items:center;gap:20px;height:60px;flex-wrap:wrap}
.logo{font-size:20px;font-weight:700;color:var(--primary);white-space:nowrap}
.main-nav{display:flex;gap:4px}
.main-nav a{padding:6px 14px;border-radius:20px;color:var(--text-sub);font-size:14px}
.main-nav a:hover{color:var(--primary);background:#fef3c7}
.main-nav a.on{color:#fff;background:var(--primary);font-weight:600}
/* 看谱器：电脑端专属入口，金色胶囊与其它导航区分；移动端不提供 */
.main-nav a.nav-viewer{
  color:#7c5f22;font-weight:600;margin-left:4px;
  background:linear-gradient(135deg,#fdecc8,#f6d18b);
  border:1px solid #e8c882;
}
.main-nav a.nav-viewer::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:#b8860b;margin-right:7px;vertical-align:2px;
  box-shadow:0 0 6px rgba(184,134,11,.7);
}
.main-nav a.nav-viewer:hover{
  color:#3a2a06;background:linear-gradient(135deg,#fcd875,#e9b955);border-color:#d8a63c;
}
.main-nav a.nav-viewer:hover::before{background:#3a2a06;box-shadow:none}
.main-nav a.nav-viewer.on{
  color:#3a2a06;background:linear-gradient(135deg,#fcd875,#e9b955);border-color:#d8a63c;
}
@media (max-width:1000px){ .main-nav a.nav-viewer{display:none!important} }
.search-box{display:flex;flex:1;max-width:300px;min-width:180px}
.search-box input{
  flex:1;height:36px;padding:0 12px;border:1px solid var(--border);
  border-radius:18px 0 0 18px;outline:none;font-size:14px;
}
.search-box button{
  height:36px;padding:0 16px;border:none;background:var(--primary);color:#fff;
  border-radius:0 18px 18px 0;cursor:pointer;font-size:14px;
}
.user-box{display:flex;align-items:center;gap:12px;margin-left:auto;white-space:nowrap;font-size:14px}
.user-name{color:var(--text-sub);max-width:140px;overflow:hidden;text-overflow:ellipsis}
.btn-primary{background:var(--primary);color:#fff;padding:7px 16px;border-radius:18px;font-size:14px}

/* ---------- 列表 ---------- */
main.container{padding-top:24px;padding-bottom:40px;min-height:60vh}
.list-head{margin-bottom:16px;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.list-head h2{font-size:22px}
.list-head .count{font-size:13px;color:var(--text-sub);font-weight:400}
.search-tip{color:var(--text-sub);font-size:14px}

.song-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:18px;
}
.song-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s;
  display:block;color:var(--text);
}
.song-card:hover{transform:translateY(-3px);box-shadow:0 6px 16px rgba(0,0,0,.10)}
.thumb{position:relative;aspect-ratio:4/3;background:#f3f4f6;overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb-ph{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:42px;color:#d1d5db;background:linear-gradient(135deg,#fdf6e3,#fde68a)}
.badge-dp{
  position:absolute;top:8px;left:8px;background:var(--primary);color:#fff;
  font-size:11px;padding:2px 8px;border-radius:10px;
}
.badge-nw{
  position:absolute;top:8px;right:8px;background:#16a34a;color:#fff;
  font-size:11px;padding:2px 8px;border-radius:10px;
}
.card-body{padding:10px 12px 12px}
.song-name{font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.song-singer{font-size:13px;color:var(--text-sub);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.song-meta{display:flex;gap:10px;margin-top:6px;font-size:12px;color:var(--text-sub)}
.song-meta .views{margin-left:auto}

/* 分页 */
.pager{display:flex;justify-content:center;gap:8px;margin-top:28px;flex-wrap:wrap}
.pager a{min-width:36px;height:36px;padding:0 8px;display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid var(--border);border-radius:8px;font-size:14px;color:var(--text-sub)}
.pager a.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.empty{color:var(--text-sub);text-align:center;padding:60px 0}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--border);background:#fff;padding:24px 0;margin-top:20px}
.site-footer p{text-align:center;font-size:13px;color:var(--text-sub);margin-bottom:4px}

/* ---------- 表单页（登录/注册/找回） ---------- */
.auth-wrap{display:flex;align-items:flex-start;justify-content:center;padding:48px 16px;min-height:70vh}
.auth-card{width:100%;max-width:400px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:30px 28px;box-shadow:var(--shadow)}
.auth-card h2{text-align:center;font-size:22px;margin-bottom:6px}
.auth-sub{text-align:center;color:var(--text-sub);font-size:13px;margin-bottom:22px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:var(--text-sub);margin-bottom:6px}
.form-group input,.form-group select{
  width:100%;height:42px;padding:0 12px;border:1px solid var(--border);
  border-radius:8px;outline:none;font-size:14px;background:#fff;
}
.form-group input:focus{border-color:var(--primary)}
.form-row{display:flex;gap:8px}
.form-row input{flex:1}
.form-row .btn-code{height:42px;padding:0 12px;white-space:nowrap;background:#f3f4f6;border:1px solid var(--border);border-radius:8px;cursor:pointer;font-size:13px;color:var(--text-sub)}
.form-row .btn-code:disabled{opacity:.6}
.btn-block{width:100%;height:44px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:15px;cursor:pointer;margin-top:6px}
.btn-block:disabled{opacity:.6;cursor:not-allowed}
.auth-links{display:flex;justify-content:space-between;margin-top:14px;font-size:13px}
.msg{font-size:13px;min-height:20px;margin-top:6px}
.msg.ok{color:#16a34a}
.msg.err{color:#dc2626}

/* ---------- 会员中心 / VIP ---------- */
.panel{background:#fff;border:1px solid var(--border);border-radius:14px;padding:26px;box-shadow:var(--shadow);margin-top:24px}
.panel h3{font-size:18px;margin-bottom:16px;border-bottom:1px solid var(--border);padding-bottom:10px}
.user-hero{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.user-hero .avatar{width:64px;height:64px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px}
.vip-badge{display:inline-block;background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;font-size:12px;padding:3px 10px;border-radius:12px;margin-left:8px}
.vip-tag{display:inline-block;background:#f3f4f6;color:var(--text-sub);font-size:12px;padding:3px 10px;border-radius:12px;margin-left:8px}
/* VIP 方案卡 */
.plan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:8px}
.plan-card{border:1px solid var(--border);border-radius:12px;padding:20px;text-align:center;background:#fff;position:relative}
.plan-card.hot{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}
.plan-card .plan-name{font-size:16px;font-weight:600}
.plan-card .plan-price{font-size:30px;font-weight:700;color:var(--primary);margin:8px 0}
.plan-card .plan-price small{font-size:13px;color:var(--text-sub);font-weight:400}
.plan-card .plan-days{color:var(--text-sub);font-size:13px;margin-bottom:14px}
.btn-buy{display:inline-block;padding:8px 28px;border-radius:20px;background:var(--primary);color:#fff;font-size:14px;cursor:pointer;border:none}
.btn-buy.ghost{background:#fff;color:var(--primary);border:1px solid var(--primary)}
/* 激活码输入 */
.code-row{display:flex;gap:8px;margin-top:20px;max-width:480px}
.code-row input{flex:1;height:44px;padding:0 12px;border:1px solid var(--border);border-radius:8px;font-size:15px;letter-spacing:2px;text-transform:uppercase;outline:none}
.code-row button{height:44px;padding:0 22px;background:var(--primary);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:14px}
/* 收藏列表 */
.fav-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}

/* ---------- 响应式 ---------- */
@media (max-width:768px){
  .header-inner{height:auto;padding:10px 16px;gap:10px}
  .logo{font-size:18px}
  .main-nav{order:3;width:100%;justify-content:center}
  .search-box{order:4;width:100%;max-width:none}
  .user-box{margin-left:auto}
  .song-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
  .auth-wrap{padding:24px 12px}
  .plan-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .song-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .card-body{padding:8px}
  .song-name{font-size:13px}
  .song-meta{flex-wrap:wrap;row-gap:2px}
}

/* ===== 首页分类/角标增强 ===== */
.badge-video{position:absolute;bottom:6px;right:6px;background:rgba(0,0,0,.7);color:#fff;font-size:11px;padding:2px 7px;border-radius:9px}
.song-meta span{white-space:nowrap}
/* ===== 首页板块（hero + 分区） ===== */
/* Hero = intro 页精简版：左文案 + 右工具清单；顶部导航已有搜索，这里不再重复搜索框 */
.hero{
  padding:46px 0 44px;
  background:
    radial-gradient(820px 300px at 12% 0%,rgba(251,191,36,.20),transparent 62%),
    linear-gradient(180deg,#fffaf3,#fff7ed 60%,#fef3c7);
  border-bottom:1px solid #f3ece2;
}
.hero-in{display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:7px;padding:5px 14px;border-radius:20px;
  background:#fff;border:1px solid #fcd34d;color:#b45309;font-size:13px;font-weight:600;
  box-shadow:0 4px 14px rgba(217,119,6,.12);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:#d97706;box-shadow:0 0 0 3px rgba(217,119,6,.16)}
.hero h1{font-size:32px;line-height:1.28;margin:16px 0 12px;color:#1f2937;letter-spacing:-.4px}
.hero-lead{color:#4b5563;font-size:15px;line-height:1.8;margin:0 0 18px;max-width:560px}
.hero-lead b{color:#b45309}
.hero-pts{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;margin:0 0 24px;padding:0}
.hero-pts li{font-size:13px;color:#6b7280;line-height:1.6}
.hero-pts b{display:block;font-size:14px;color:#1f2937;margin-bottom:1px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-btn{
  display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 24px;
  border-radius:10px;border:1px solid #e5e7eb;background:#fff;color:#374151;font-size:14.5px;
  font-weight:500;transition:.16s;white-space:nowrap;
}
.hero-btn:hover{border-color:#fcd34d;background:#fffbeb}
.hero-btn.primary{background:#d97706;border-color:#d97706;color:#fff;font-weight:600;box-shadow:0 6px 18px rgba(217,119,6,.24)}
.hero-btn.primary:hover{background:#b45309;border-color:#b45309}
.hero-note{margin-top:14px;font-size:12.5px;color:#9ca3af}
.hero-note .sep{margin:0 8px;color:#d6cfc5}
/* 右侧工具清单卡 */
.hero-card{background:#fff;border:1px solid #fde68a;border-radius:16px;padding:20px 22px;box-shadow:0 14px 40px rgba(180,83,9,.08)}
.hero-card-hd{font-size:13px;font-weight:700;color:#b45309;letter-spacing:.3px;margin-bottom:14px}
.hero-tools{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.hero-tools li{display:flex;gap:11px;align-items:flex-start}
.hero-tools i{
  flex:none;width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;font-size:13px;font-style:normal;
}
.hero-tools b{display:block;font-size:14px;color:#1f2937;line-height:1.5}
.hero-tools span{display:block;font-size:12.5px;color:#6b7280;line-height:1.6}
.hero-card-ft{margin-top:14px;padding-top:12px;border-top:1px dashed #f3ece2;font-size:12px;color:#9ca3af}
.home-sec{margin:34px 0}
.sec-head{display:flex;align-items:baseline;gap:12px;margin-bottom:16px;border-bottom:2px solid #f0e9dd;padding-bottom:10px}
.sec-head h2{font-size:20px;color:#1f2937;margin:0}
.sec-sub{color:#9ca3af;font-size:12px}
.sec-head .more{margin-left:auto;color:#d97706;font-size:14px;text-decoration:none}
.sec-head .more:hover{text-decoration:underline}
@media (max-width:900px){
  .hero-in{grid-template-columns:1fr;gap:26px}
}
@media (max-width:768px){
  .hero{padding:30px 0 32px}
  .hero h1{font-size:24px;margin:12px 0 10px}
  .hero-lead{font-size:14px;margin-bottom:16px}
  .hero-pts{gap:8px 14px;margin-bottom:20px}
  .hero-pts li{font-size:12.5px}
  .hero-pts b{font-size:13.5px}
  .hero-btn{flex:1;padding:0 14px;height:42px;font-size:14px}
  .hero-card{padding:16px 16px}
  .sec-head{flex-wrap:wrap;row-gap:4px}
  .sec-head h2{font-size:17px}
  .sec-sub{width:100%;order:3}
}
/* ===== 导航汉堡 + 移动端自适应 ===== */
.nav-toggle{display:none;background:none;border:1px solid #d1d5db;border-radius:6px;font-size:20px;line-height:1;padding:6px 10px;cursor:pointer;color:#374151}
@media (max-width:768px){
  .nav-toggle{display:block;margin-left:auto}
  .header-inner{flex-wrap:wrap;position:relative}
  .header-inner .logo{margin-right:auto}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:6px 0;border-top:1px solid #eee;box-shadow:0 6px 14px rgba(0,0,0,.08);z-index:200}
  body.nav-open .main-nav{display:flex}
  .main-nav a{display:block;padding:10px 16px;border-bottom:1px solid #f5f5f5}
  .main-nav a.on{background:#fdf3e3;color:#d97706}
  .header-inner .search-box{display:none}
  .user-box .btn-primary{padding:4px 10px;font-size:12px}
}
/* ---------- 技术文章 ---------- */
.art-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin-top:16px}
.art-card{display:block;background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px;text-decoration:none;transition:box-shadow .2s}
.art-card:hover{box-shadow:0 4px 14px rgba(0,0,0,.08)}
.art-card h3{font-size:16px;color:#1f2937;margin:0 0 8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-sum{font-size:13px;color:var(--text-sub);line-height:1.6;margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-meta{font-size:12px;color:#9ca3af}
.art-detail{background:#fff;border:1px solid var(--border);border-radius:12px;padding:26px 30px;margin-top:14px;max-width:860px}
.art-detail h1{font-size:24px;color:#1f2937;margin:0 0 10px;line-height:1.4}
.art-detail-meta{font-size:13px;color:#9ca3af;margin-bottom:12px}
.art-kw{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.art-kw span{background:#faf6ee;color:#7c5a1e;font-size:12px;padding:2px 10px;border-radius:12px}
.art-body{font-size:15px;color:#374151;line-height:1.9}
.art-body h2{font-size:19px;color:#1f2937;margin:24px 0 10px;padding-left:10px;border-left:4px solid var(--primary)}
.art-body h3{font-size:16px;color:#1f2937;margin:16px 0 8px}
.art-body p{margin:0 0 12px}
.art-body ul,.art-body ol{margin:0 0 12px;padding-left:22px}
.art-body li{margin-bottom:6px}
.art-related-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.art-related-item{display:flex;flex-direction:column;justify-content:space-between;background:#fff;border:1px solid var(--border);border-radius:10px;padding:12px 14px;text-decoration:none;transition:box-shadow .2s}
.art-related-item:hover{box-shadow:0 4px 14px rgba(0,0,0,.08)}
.art-rel-name{font-size:14px;font-weight:600;color:#1f2937;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-rel-meta{font-size:12px;color:#9ca3af;margin-top:8px}
@media (max-width:768px){
  .art-detail{padding:18px 16px}
  .art-detail h1{font-size:20px}
  .art-body{font-size:15px}
}

/* vip contact buy */
.contact-buy{margin-top:16px;padding:14px;border:1px dashed var(--border);border-radius:10px;background:#fafafa;text-align:center}
.contact-buy h4{margin:0 0 10px;font-size:14px;color:var(--text-main)}
.contact-buy p{margin:8px 0 0;font-size:13px;color:var(--text-sub)}
.contact-buy p b{color:var(--primary);font-size:14px}
.contact-qr{max-width:160px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.08)}

/* ---------- 图片加载态（骨架 + 扫光 + 转圈；JS 由 site.js 统一打标） ---------- */
img.img-loading{
  background-color:#eef0f3;
  background-image:
    url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'%3E%3Ccircle cx='25' cy='25' r='20' fill='none' stroke='%23e2e6ec' stroke-width='5'/%3E%3Cpath d='M25 5a20 20 0 0 1 20 20' fill='none' stroke='%23d97706' stroke-width='5' stroke-linecap='round'%3E%3CanimateTransform attributeName='transform' type='rotate' from='0 25 25' to='360 25 25' dur='0.9s' repeatCount='indefinite'/%3E%3C/path%3E%3C/svg%3E"),
    linear-gradient(100deg, rgba(255,255,255,0) 30%, rgba(255,255,255,.9) 50%, rgba(255,255,255,0) 70%);
  background-repeat:no-repeat, no-repeat;
  background-position:center center, -100% 0;
  background-size:24px 24px, 220% 100%;
  animation:imgShine 1.4s linear infinite;
}
@keyframes imgShine{ to{ background-position:center center, 200% 0; } }

/* 加载失败：淡灰底 + 破图图标，不再一直转圈 */
img.img-failed{
  background-color:#f1f2f4;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='3'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.6'/%3E%3Cpath d='M21 15l-5-5L5 21'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:center center;
  background-size:22px 22px;
}
@media (prefers-reduced-motion: reduce){
  img.img-loading{ animation:none; }
}