/* ===== /rom/ 样式 v3: 分类Tab + 近7天更新 + 区域变种聚合 ===== */
*{box-sizing:border-box;margin:0;padding:0}
:root{
    --rom-bg:#f6f3ed;--rom-card:#fff;--rom-text:#26231f;--rom-sub:#746e65;
    --rom-border:#e9e2d8;--rom-primary:#8b1e2d;--rom-gold:#b8893f;--rom-green:#28705a;
    --rom-radius:16px;--rom-radius-sm:10px;
    --rom-shadow:0 3px 14px rgba(65,45,25,.055);--rom-shadow-hover:0 12px 36px rgba(65,45,25,.09);
}
[data-theme="dark"]{
    --rom-bg:#171512;--rom-card:#24211d;--rom-text:#f0e9df;--rom-sub:#b7ada1;
    --rom-border:#403a33;--rom-primary:#e2989f;--rom-gold:#d7ad6d;
    --rom-shadow:0 3px 14px rgba(0,0,0,.2);--rom-shadow-hover:0 12px 36px rgba(0,0,0,.35);
}

html{font-size:16px;scroll-behavior:smooth}
body{
    font-family:"PingFang SC","Noto Sans SC",system-ui,sans-serif;
    color:var(--rom-text);
    background:var(--rom-bg);
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
}
a{color:var(--rom-primary);text-decoration:none;transition:color .15s,opacity .15s}
a:hover{opacity:.8}

.rom-container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 面包屑 === */
.rom-breadcrumb{background:var(--rom-card);border-bottom:1px solid var(--rom-border);padding:11px 0}
.rom-breadcrumb .rom-container{display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.rom-breadcrumb a,.rom-breadcrumb span{color:var(--rom-sub);font-size:13px;margin-right:4px}
.rom-breadcrumb a:hover{color:var(--rom-primary)}
.rom-breadcrumb .current{color:var(--rom-text);font-weight:500}

/* === 双栏布局 === */
.rom-layout{display:flex;gap:28px;max-width:1200px;margin:0 auto;padding:24px 20px 48px;align-items:flex-start}
.rom-layout>.rom-content{flex:1;min-width:0}
.rom-layout>.rom-sidebar{width:300px;flex-shrink:0;position:sticky;top:84px;align-self:flex-start}

@media(max-width:1100px){
    .rom-layout{flex-direction:column;padding:16px 16px 36px}
    .rom-layout>.rom-content{width:100%}
    .rom-layout>.rom-sidebar{width:100%;position:static}
}
@media(max-width:700px){
    .rom-layout>.rom-sidebar{display:none}
    .rom-layout{padding-left:12px;padding-right:12px}
}

/* === 侧栏 === */
.rom-side-card{background:var(--rom-card);border:1px solid var(--rom-border);border-radius:var(--rom-radius);padding:20px;margin-bottom:18px;box-shadow:var(--rom-shadow)}
.rom-side-card h3{font-size:16px;font-weight:700;color:var(--rom-text);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--rom-border);font-family:"STKaiti","KaiTi","Noto Serif SC",serif;letter-spacing:1px}
.rom-side-card p,.rom-side-card li{font-size:13px;color:var(--rom-sub);line-height:1.85}
.rom-side-card ul{list-style:none;padding:0;margin:0}
.rom-side-card ul li{padding:6px 0;border-bottom:1px dashed var(--rom-border)}
.rom-side-card ul li:last-child{border-bottom:none}
.rom-side-card ul li a{color:var(--rom-primary);font-size:13px;display:block}
.rom-side-card ul li a:hover{opacity:.8}

/* === 首页头部 === */
.rom-header{text-align:center;padding:32px 0 20px}
.rom-h1{font-size:32px;font-weight:800;color:var(--rom-text);letter-spacing:2px;font-family:"STKaiti","KaiTi","Noto Serif SC",serif;margin-bottom:8px}
.rom-subtitle{color:var(--rom-sub);font-size:15px;max-width:700px;margin:0 auto;line-height:1.7}

/* === 搜索框 === */
.rom-search-box{background:var(--rom-card);border:1px solid var(--rom-border);border-radius:var(--rom-radius);padding:20px;margin-bottom:24px;box-shadow:var(--rom-shadow)}
.rom-search-form{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.rom-search-input{flex:1;min-width:200px;min-height:46px;padding:8px 16px;border:1px solid #dcd4c9;border-radius:12px;font-size:15px;color:var(--rom-text);background:var(--rom-card);outline:none}
.rom-search-input:focus{border-color:var(--rom-primary);box-shadow:0 0 0 3px rgba(139,30,45,.1)}
.rom-search-select{min-height:46px;padding:8px 16px;border:1px solid #dcd4c9;border-radius:12px;font-size:15px;color:var(--rom-text);background:var(--rom-card);outline:none;cursor:pointer}
.rom-search-select:focus{border-color:var(--rom-primary)}
.rom-search-btn{min-height:46px;padding:10px 24px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--rom-primary),#a53a3b);color:#fff;font-weight:700;font-size:15px;cursor:pointer;box-shadow:0 6px 16px rgba(139,30,45,.15);transition:transform .15s;display:inline-flex;align-items:center;text-decoration:none}
.rom-search-btn:hover{transform:translateY(-1px);opacity:1}
.rom-stats{text-align:center;color:var(--rom-sub);font-size:13px;margin-bottom:20px}

@media(max-width:700px){
    .rom-search-form{flex-direction:column}
    .rom-search-input,.rom-search-select,.rom-search-btn{width:100%}
}

/* === 设备卡片列表 === */
.rom-device-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.rom-device-card{
    background:var(--rom-card);
    border:1px solid var(--rom-border);
    border-radius:var(--rom-radius);
    padding:20px 22px;
    box-shadow:var(--rom-shadow);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    display:flex;flex-direction:column;gap:10px;
    color:var(--rom-text);
}
.rom-device-card:hover{transform:translateY(-3px);box-shadow:var(--rom-shadow-hover);border-color:#d9bd94;opacity:1}
.rom-device-name{
    font-size:17px;font-weight:700;color:var(--rom-text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rom-device-codename{font-size:12px;color:var(--rom-sub);font-family:monospace;background:var(--rom-bg);padding:2px 8px;border-radius:6px;display:inline-block;width:fit-content}
.rom-device-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center}

/* Badges */
.rom-badge{font-size:11px;font-weight:600;padding:3px 10px;border-radius:20px;white-space:nowrap}
.rom-badge-stable{background:#e8f5e9;color:#2e7d32}
.rom-badge-beta{background:#fff3e0;color:#e65100}
.rom-badge-weekly{background:#e3f2fd;color:#1565c0}
[data-theme="dark"] .rom-badge-stable{background:#1a3a1c;color:#81c784}
[data-theme="dark"] .rom-badge-beta{background:#3a2a10;color:#ffb74d}
[data-theme="dark"] .rom-badge-weekly{background:#0d2a3d;color:#64b5f6}

.rom-device-info{font-size:13px;color:var(--rom-sub);display:flex;flex-wrap:wrap;gap:8px}
.rom-device-info span{display:flex;align-items:center;gap:4px}
.rom-device-card .rom-btn{
    margin-top:auto;
    display:block;text-align:center;
    padding:10px 16px;border-radius:10px;
    background:var(--rom-primary);color:#fff;
    font-size:14px;font-weight:600;
    transition:transform .15s,box-shadow .15s;
}
.rom-device-card:hover .rom-btn{transform:translateY(-1px);box-shadow:0 4px 12px rgba(139,30,45,.25)}

/* === 分页 === */
.rom-pagination{display:flex;justify-content:center;gap:8px;margin-top:28px;flex-wrap:wrap}
.rom-pagination a,.rom-pagination span{
    padding:8px 16px;border-radius:10px;border:1px solid var(--rom-border);
    font-size:14px;color:var(--rom-text);background:var(--rom-card);
    transition:background .15s,color .15s;
}
.rom-pagination a:hover{background:var(--rom-primary);color:#fff;border-color:var(--rom-primary);opacity:1}
.rom-pagination .active{background:var(--rom-primary);color:#fff;border-color:var(--rom-primary);font-weight:700}

/* === 设备详情页 === */
.rom-detail-header{padding:28px 0 16px}
.rom-detail-h1{font-size:30px;font-weight:800;color:var(--rom-text);letter-spacing:1px;font-family:"STKaiti","KaiTi","Noto Serif SC",serif;margin-bottom:6px}
.rom-detail-codename{font-size:14px;color:var(--rom-sub);font-family:monospace;margin-bottom:12px}
.rom-detail-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.rom-detail-stat{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--rom-sub);padding:6px 14px;background:var(--rom-card);border:1px solid var(--rom-border);border-radius:20px}
.rom-detail-stat strong{color:var(--rom-primary)}

/* === 版本表格 === */
.rom-version-section{margin-bottom:28px}
.rom-version-section h2{
    font-size:20px;font-weight:700;color:var(--rom-text);
    font-family:"STKaiti","KaiTi","Noto Serif SC",serif;
    padding-left:14px;border-left:4px solid var(--rom-primary);
    margin-bottom:16px;letter-spacing:1px;
}
.rom-version-table{width:100%;border-collapse:collapse;background:var(--rom-card);border:1px solid var(--rom-border);border-radius:var(--rom-radius);overflow:hidden;box-shadow:var(--rom-shadow);font-size:14px}
.rom-version-table thead{background:var(--rom-primary);color:#fff}
.rom-version-table th{padding:12px 14px;text-align:left;font-weight:600;font-size:13px;white-space:nowrap}
.rom-version-table td{padding:12px 14px;border-bottom:1px solid var(--rom-border);color:var(--rom-text);vertical-align:middle}
.rom-version-table tbody tr:hover{background:rgba(139,30,45,.03)}
.rom-version-table tbody tr:last-child td{border-bottom:none}
.rom-ver{font-weight:600;color:var(--rom-primary);white-space:nowrap}
.rom-ver-small{font-size:12px;color:var(--rom-sub)}

/* 下载按钮 */
.rom-dl-btn{
    display:inline-flex;align-items:center;gap:6px;
    padding:7px 14px;border-radius:8px;
    font-size:13px;font-weight:600;white-space:nowrap;
    transition:transform .15s,box-shadow .15s;
    text-decoration:none;
}
.rom-dl-btn:hover{transform:translateY(-1px);opacity:1}
.rom-dl-recovery{background:#e8f5e9;color:#2e7d32}
.rom-dl-recovery:hover{background:#2e7d32;color:#fff;box-shadow:0 2px 8px rgba(46,125,50,.3)}
.rom-dl-fastboot{background:#fff3e0;color:#e65100}
.rom-dl-fastboot:hover{background:#e65100;color:#fff;box-shadow:0 2px 8px rgba(230,81,0,.3)}
[data-theme="dark"] .rom-dl-recovery{background:#1a3a1c;color:#81c784}
.rom-dl-recovery[data-theme="dark"]:hover,.rom-dl-recovery:hover,.rom-dl-fastboot:hover{color:#fff}
[data-theme="dark"] .rom-dl-fastboot{background:#3a2a10;color:#ffb74d}

.rom-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--rom-radius);border:1px solid var(--rom-border)}
.rom-table-wrap .rom-version-table{border:none;box-shadow:none;border-radius:0}

@media(max-width:700px){
    .rom-version-table{font-size:13px}
    .rom-version-table th,.rom-version-table td{padding:10px 8px}
    .rom-detail-h1{font-size:24px}
    .rom-h1{font-size:26px}
}

.rom-notice{
    background:linear-gradient(115deg,#fffaf1 0%,#fff 45%,#faf3e7 100%);
    border:1px solid #e8d2ab;border-radius:var(--rom-radius);
    padding:18px 22px;margin-bottom:24px;
    font-size:14px;color:var(--rom-text);line-height:1.8;
    box-shadow:var(--rom-shadow);
}
.rom-notice strong{color:var(--rom-primary)}
[data-theme="dark"] .rom-notice{background:linear-gradient(115deg,#30271d,#24211d);border-color:#5a4830}

/* FAQ */
.rom-faq-section{margin:28px 0}
.rom-faq-section h2{
    font-size:20px;font-weight:700;color:var(--rom-text);
    font-family:"STKaiti","KaiTi","Noto Serif SC",serif;
    padding-left:14px;border-left:4px solid var(--rom-gold);
    margin-bottom:20px;letter-spacing:1px;
}
.rom-faq-list{display:flex;flex-direction:column;gap:14px}
.rom-faq-item{background:var(--rom-card);border:1px solid var(--rom-border);border-radius:var(--rom-radius);padding:18px 20px;box-shadow:var(--rom-shadow);border-left:3px solid var(--rom-gold)}
.rom-faq-q{font-weight:700;font-size:15px;color:var(--rom-text);margin-bottom:8px}
.rom-faq-q::before{content:"Q: ";color:var(--rom-primary);font-weight:800}
.rom-faq-a{font-size:14px;color:var(--rom-sub);line-height:1.85}
.rom-faq-a::before{content:"A: ";color:var(--rom-green);font-weight:700}

.rom-updated{text-align:center;font-size:12px;color:var(--rom-sub);padding:16px 0}

/* 无结果 */
.rom-no-result{text-align:center;padding:60px 20px;color:var(--rom-sub)}
.rom-no-icon{font-size:48px;margin-bottom:12px}

/* ===== v3: 品牌导航 ===== */
.rom-brand-nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.rom-brand-tab{
    padding:10px 20px;border-radius:var(--rom-radius);font-size:14px;font-weight:700;
    background:var(--rom-card);color:var(--rom-text);border:2px solid var(--rom-border);
    transition:all .15s;white-space:nowrap;
}
.rom-brand-tab:hover{border-color:var(--rom-primary);opacity:1}
.rom-brand-tab.active{background:var(--rom-primary);color:#fff;border-color:var(--rom-primary)}

/* ===== v3: 分类Tab ===== */
.rom-cat-nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;padding:4px 0}
.rom-cat-tab{
    padding:8px 16px;border-radius:20px;font-size:13px;font-weight:600;
    background:var(--rom-card);color:var(--rom-sub);border:1px solid var(--rom-border);
    transition:all .15s;white-space:nowrap;
}
.rom-cat-tab:hover{color:var(--rom-primary);border-color:var(--rom-primary);opacity:1}
.rom-cat-tab.active{background:var(--rom-primary);color:#fff;border-color:var(--rom-primary)}

/* ===== v3 新增: 近7天更新 ===== */
.rom-recent-section{margin-bottom:28px}
.rom-section-title{
    font-size:18px;font-weight:700;color:var(--rom-text);margin-bottom:14px;
    font-family:"STKaiti","KaiTi","Noto Serif SC",serif;letter-spacing:1px;
}
.rom-recent-scroll{display:flex;gap:12px;overflow-x:auto;padding:4px 0 8px;-webkit-overflow-scrolling:touch;scroll-snap-type:x mandatory}
.rom-recent-scroll::-webkit-scrollbar{height:4px}
.rom-recent-scroll::-webkit-scrollbar-thumb{background:var(--rom-border);border-radius:4px}
.rom-recent-card{
    flex:0 0 220px;scroll-snap-align:start;
    background:var(--rom-card);border:1px solid var(--rom-border);
    border-radius:var(--rom-radius);padding:16px 18px;
    box-shadow:var(--rom-shadow);transition:transform .15s,box-shadow .15s;
    color:var(--rom-text);display:flex;flex-direction:column;gap:8px;
}
.rom-recent-card:hover{transform:translateY(-2px);box-shadow:var(--rom-shadow-hover);opacity:1}
.rom-recent-name{font-size:15px;font-weight:700;line-height:1.3}
.rom-recent-ver{font-size:13px;color:var(--rom-primary);font-weight:600;font-family:monospace}
.rom-recent-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.rom-recent-date{font-size:11px;color:var(--rom-sub)}
.rom-recent-variants{font-size:11px;background:#f3e5f5;color:#6a1b9a;padding:2px 8px;border-radius:10px}

/* ===== v3 新增: 区域变种Tab ===== */
.rom-variant-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.rom-variant-tab{
    padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;
    background:var(--rom-card);color:var(--rom-text);
    border:2px solid var(--rom-border);transition:all .15s;
    display:flex;align-items:center;gap:6px;
}
.rom-variant-tab:hover{border-color:var(--rom-gold);opacity:1}
.rom-variant-tab.active{background:var(--rom-primary);color:#fff;border-color:var(--rom-primary)}
.rom-variant-count{font-size:11px;background:rgba(255,255,255,.2);padding:2px 8px;border-radius:10px}
.rom-variant-tab:not(.active) .rom-variant-count{background:var(--rom-bg);color:var(--rom-sub)}

@media(max-width:700px){
    .rom-recent-card{flex:0 0 180px}
    .rom-variant-tabs{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}
    .rom-variant-tab{flex-shrink:0;font-size:13px;padding:8px 14px}
}