/* =======================================================
   资源站点平台 · 前台样式
   ======================================================= */
:root {
    --primary: #3563e9;
    --primary-dark: #274bbf;
    --primary-light: #eaf0ff;
    --danger: #e54545;
    --success: #18b566;
    --warn: #f5a623;
    --gold: #d4a12a;
    --text: #1f2329;
    --text-sub: #6b7280;
    --text-light: #9aa1ab;
    --border: #e6e8eb;
    --bg: #f4f6f9;
    --card: #ffffff;
    --radius: 10px;
    --shadow: 0 2px 12px rgba(25, 35, 60, .07);
    --shadow-lg: 0 8px 30px rgba(25, 35, 60, .12);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; vertical-align: middle; }
ul, ol { list-style: none; margin: 0; padding: 0; }
input, textarea, select, button { font-family: inherit; font-size: 14px; outline: none; }
table { border-collapse: collapse; width: 100%; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #c8cdd4; border-radius: 4px; }

.container { width: 1200px; max-width: 100%; margin: 0 auto; padding: 0 16px; }
.flex { display: flex; }
.between { display: flex; align-items: center; justify-content: space-between; }
.wrap { display: flex; flex-wrap: wrap; }
.grow { flex: 1; }
.mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }
.mr8 { margin-right: 8px; } .mb16 { margin-bottom: 16px; }
.center { text-align: center; }
.muted { color: var(--text-sub); }
.small { font-size: 12px; }
.nowrap { white-space: nowrap; }

/* 顶部导航 */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
}
.site-header .inner { display: flex; align-items: center; height: 60px; gap: 24px; }
.logo-box { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--primary); }
.logo-box img { height: 32px; width: auto; }
.nav { display: flex; gap: 4px; }
.nav a {
    padding: 7px 14px; border-radius: 8px; color: var(--text-sub); font-weight: 500; transition: .15s;
}
.nav a:hover { background: var(--primary-light); color: var(--primary); }
.nav a.active { background: var(--primary-light); color: var(--primary); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.search-box { display: flex; border: 1px solid var(--border); border-radius: 20px; overflow: hidden; background: #fff; }
.search-box input {
    border: 0; padding: 7px 14px; width: 220px; background: transparent;
}
.search-box button { border: 0; background: var(--primary); color: #fff; padding: 0 18px; cursor: pointer; }

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px 18px; border: 1px solid var(--border); background: #fff; color: var(--text);
    border-radius: 8px; cursor: pointer; transition: .15s; font-weight: 500; white-space: nowrap;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-warn { background: var(--warn); border-color: var(--warn); color: #fff; }
.btn-warn:hover { background: #e59415; color: #fff; }
.btn-gold { background: linear-gradient(135deg, #f6d365, #d4a12a); border-color: #d4a12a; color: #51350a; }
.btn-lg { padding: 12px 30px; font-size: 15px; }
.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* 卡片 */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-head {
    padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between;
}
.card-head h3 { margin: 0; font-size: 15px; font-weight: 600; }
.card-body { padding: 18px; }

/* 徽标 */
.badge { display: inline-block; padding: 1px 8px; border-radius: 20px; font-size: 12px; line-height: 18px; }
.badge-ok { background: #e7f7ee; color: var(--success); }
.badge-warn { background: #fff4e0; color: #c47b09; }
.badge-gray { background: #f0f1f3; color: var(--text-sub); }
.badge-danger { background: #fdeaea; color: var(--danger); }
.badge-primary { background: var(--primary-light); color: var(--primary); }
.vip-badge {
    display: inline-flex; align-items: center; gap: 3px;
    background: linear-gradient(135deg, #fbe3a1, #d4a12a); color: #51350a;
    padding: 1px 8px 1px 4px; border-radius: 20px; font-size: 12px; font-weight: 600; line-height: 18px;
}
.vip-badge img { width: 14px; height: 14px; border-radius: 50%; }

/* 表单 */
.form-item { margin-bottom: 16px; }
.form-item label { display: block; margin-bottom: 6px; font-weight: 500; }
.form-item label .req { color: var(--danger); }
.input, .textarea, .select {
    width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff; transition: .15s;
}
.input:focus, .textarea:focus, .select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(53, 99, 233, .1); }
.textarea { min-height: 100px; resize: vertical; }
.input-group { display: flex; gap: 8px; }
.hint { font-size: 12px; color: var(--text-light); margin-top: 4px; }
.form-inline { display: flex; gap: 12px; align-items: center; }

/* 首页 */
.hero {
    background: linear-gradient(120deg, #2c53c9 0%, #4b7bf5 55%, #6d9bff 100%);
    color: #fff; padding: 40px 0 46px;
}
.hero h1 { font-size: 28px; margin: 0 0 8px; font-weight: 700; }
.hero p { margin: 0 0 20px; opacity: .9; }
.hero-search { display: flex; background: #fff; border-radius: 10px; padding: 6px; box-shadow: var(--shadow-lg); }
.hero-search input { flex: 1; border: 0; padding: 10px 14px; font-size: 15px; border-radius: 8px; }
.hero-search button { border: 0; background: var(--primary); color: #fff; padding: 0 30px; border-radius: 8px; cursor: pointer; font-weight: 600; }
.hero-stats { display: flex; gap: 40px; margin-top: 24px; }
.hero-stats div b { display: block; font-size: 22px; }
.hero-stats div span { font-size: 12px; opacity: .85; }

.section-head { display: flex; align-items: center; justify-content: space-between; margin: 26px 0 14px; }
.section-head h2 { font-size: 19px; margin: 0; font-weight: 700; }
.section-head .more { color: var(--text-sub); font-size: 13px; }

.res-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.res-grid.cols3 { grid-template-columns: repeat(3, 1fr); }
.res-card {
    background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; transition: .2s;
    display: flex; flex-direction: column; cursor: pointer;
}
.res-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.res-cover {
    height: 130px; background: linear-gradient(135deg, #eef3ff, #dfe8fb); display: flex; align-items: center; justify-content: center;
    font-size: 34px; color: #9cb4f0; position: relative; overflow: hidden;
}
.res-cover img { width: 100%; height: 100%; object-fit: cover; }
.res-body { padding: 12px 14px; flex: 1; display: flex; flex-direction: column; }
.res-title { font-weight: 600; font-size: 14px; line-height: 1.45; height: 40px; overflow: hidden; }
.res-tags { margin: 8px 0; display: flex; flex-wrap: wrap; gap: 4px; }
.tag { background: #f1f3f7; color: var(--text-sub); border-radius: 4px; padding: 1px 6px; font-size: 11px; }
.tag-blue { background: var(--primary-light); color: var(--primary); }
.tag-gold { background: #fdf4dd; color: var(--gold); }
.res-meta { display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--text-light); margin-top: auto; }
.res-price { color: var(--danger); font-weight: 700; font-size: 14px; }
.res-price.free { color: var(--success); }

/* 筛选栏 */
.filter-bar { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px 18px; margin-bottom: 16px; }
.filter-row { display: flex; gap: 10px; align-items: flex-start; padding: 5px 0; border-bottom: 1px dashed var(--border); }
.filter-row:last-child { border-bottom: 0; }
.filter-row > .flabel { width: 56px; color: var(--text-sub); font-size: 13px; flex-shrink: 0; padding-top: 3px; }
.filter-row .opts { display: flex; flex-wrap: wrap; gap: 6px; }
.opt {
    padding: 3px 12px; border-radius: 14px; cursor: pointer; color: var(--text-sub); font-size: 13px; border: 1px solid transparent;
}
.opt:hover { color: var(--primary); }
.opt.active { background: var(--primary-light); color: var(--primary); border-color: #c9d8ff; font-weight: 500; }

/* 列表 */
.res-list-item { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.res-list-item:last-child { border-bottom: 0; }
.res-list-item .thumb {
    width: 100px; height: 70px; border-radius: 8px; background: linear-gradient(135deg, #eef3ff, #dfe8fb);
    display: flex; align-items: center; justify-content: center; font-size: 24px; color: #9cb4f0; overflow: hidden; flex-shrink: 0;
}
.res-list-item .thumb img { width: 100%; height: 100%; object-fit: cover; }

/* 详情 */
.detail-wrap { display: flex; gap: 20px; align-items: flex-start; }
.detail-main { flex: 1; min-width: 0; }
.detail-side { width: 320px; flex-shrink: 0; position: sticky; top: 76px; }
.resource-title { font-size: 22px; font-weight: 700; margin: 0 0 10px; }
.resource-meta { color: var(--text-sub); font-size: 13px; display: flex; gap: 16px; flex-wrap: wrap; }
.file-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.file-item {
    display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff;
}
.file-ico { width: 34px; height: 34px; border-radius: 6px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 11px; font-weight: 700; flex-shrink: 0; }
.ico-pdf { background: #e54545; } .ico-doc { background: #2b579a; } .ico-ppt { background: #d24726; } .ico-image { background: #18b566; }
.price-box { border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-bottom: 12px; }
.price-box .row { display: flex; align-items: baseline; justify-content: space-between; }
.price-big { color: var(--danger); font-size: 26px; font-weight: 700; }
.vip-tip-table { width: 100%; font-size: 12px; margin-top: 8px; }
.vip-tip-table td { padding: 3px 0; }
.author-box { display: flex; align-items: center; gap: 12px; }
.avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--primary-light); object-fit: cover; flex-shrink: 0; }
.avatar.sm { width: 32px; height: 32px; }
.avatar.lg { width: 72px; height: 72px; }
.author-box .info b { display: block; }

/* 个人中心 */
.uc-wrap { display: flex; gap: 20px; align-items: flex-start; }
.uc-side { width: 200px; flex-shrink: 0; }
.uc-main { flex: 1; min-width: 0; }
.uc-nav { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.uc-nav .uc-user { padding: 18px 16px; text-align: center; border-bottom: 1px solid var(--border); }
.uc-nav a { display: block; padding: 11px 18px; color: var(--text-sub); border-left: 3px solid transparent; }
.uc-nav a:hover { background: #fafbfc; color: var(--text); }
.uc-nav a.active { background: var(--primary-light); color: var(--primary); border-left-color: var(--primary); font-weight: 500; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; text-align: center; }
.stat-card b { display: block; font-size: 22px; color: var(--primary); }
.stat-card span { font-size: 12px; color: var(--text-sub); }

/* 表格 */
.table { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.table th { background: #fafbfc; text-align: left; padding: 11px 14px; font-weight: 600; color: var(--text-sub); font-size: 13px; border-bottom: 1px solid var(--border); }
.table td { padding: 11px 14px; border-bottom: 1px solid #f1f2f4; }
.table tr:last-child td { border-bottom: 0; }
.table tr:hover td { background: #fafbfd; }

/* 聊天 */
.chat-wrap { display: flex; height: calc(100vh - 170px); background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.chat-side { width: 240px; border-right: 1px solid var(--border); display: flex; flex-direction: column; }
.chat-side .head { padding: 12px 14px; border-bottom: 1px solid var(--border); font-weight: 600; }
.chat-list { overflow-y: auto; flex: 1; }
.chat-item { display: flex; gap: 10px; padding: 10px 14px; cursor: pointer; border-bottom: 1px solid #f4f5f7; }
.chat-item:hover { background: #f7f9fc; }
.chat-item.active { background: var(--primary-light); }
.chat-item .ci-body { flex: 1; min-width: 0; }
.chat-item .ci-top { display: flex; justify-content: space-between; }
.chat-item .ci-last { font-size: 12px; color: var(--text-light); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.unread-dot { min-width: 16px; height: 16px; padding: 0 4px; background: var(--danger); color: #fff; border-radius: 8px; font-size: 11px; line-height: 16px; text-align: center; }
.chat-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.chat-main .head { padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 600; display: flex; align-items: center; justify-content: space-between; }
.chat-body { flex: 1; overflow-y: auto; padding: 16px; background: #f7f9fc; }
.msg-row { display: flex; margin-bottom: 14px; }
.msg-row.me { flex-direction: row-reverse; }
.msg-avatar { width: 34px; height: 34px; border-radius: 50%; flex-shrink: 0; object-fit: cover; }
.msg-bubble {
    max-width: 62%; margin: 0 10px; padding: 8px 12px; border-radius: 10px; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.06); word-break: break-all;
}
.msg-row.me .msg-bubble { background: #d9e6ff; }
.msg-time { text-align: center; font-size: 11px; color: var(--text-light); margin: 8px 0; }
.msg-file { display: flex; align-items: center; gap: 8px; }
.chat-editor { border-top: 1px solid var(--border); padding: 10px 14px; }
.chat-tools { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.chat-tools i { width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center; border-radius: 6px; cursor: pointer; background: #f2f3f5; }
.chat-editor textarea { width: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; resize: none; height: 74px; }
.emoji-panel { display: none; border: 1px solid var(--border); border-radius: 8px; padding: 8px; background: #fff; margin-bottom: 8px; max-height: 160px; overflow-y: auto; }
.emoji-panel.show { display: grid; grid-template-columns: repeat(12, 1fr); gap: 4px; }
.emoji-panel span { cursor: pointer; font-size: 20px; text-align: center; padding: 2px; border-radius: 4px; }
.emoji-panel span:hover { background: var(--primary-light); }

/* 分页 */
.pager { display: flex; gap: 6px; align-items: center; justify-content: center; padding: 20px 0; flex-wrap: wrap; }
.pg-item {
    min-width: 32px; height: 32px; padding: 0 8px; border: 1px solid var(--border); background: #fff; border-radius: 6px;
    display: inline-flex; align-items: center; justify-content: center; color: var(--text-sub); font-size: 13px;
}
.pg-item:hover { border-color: var(--primary); color: var(--primary); }
.pg-item.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pg-item.disabled { opacity: .45; pointer-events: none; }
.pg-info { font-size: 12px; color: var(--text-light); margin-left: 8px; }

/* 提示信息 */
.notice-bar {
    background: #fff8e6; border: 1px solid #ffe4a8; color: #a06800; padding: 8px 16px; border-radius: 8px; margin: 14px 0; font-size: 13px;
}
.empty { padding: 60px 0; text-align: center; color: var(--text-light); }
.empty .ico { font-size: 44px; display: block; margin-bottom: 10px; opacity: .5; }

/* 登录页 */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(120deg, #2c53c9, #6d9bff); }
.auth-box { width: 420px; max-width: calc(100% - 32px); background: #fff; border-radius: 14px; box-shadow: var(--shadow-lg); padding: 34px; }
.auth-box h2 { margin: 0 0 6px; font-size: 22px; }
.auth-box .sub { color: var(--text-sub); margin-bottom: 22px; }
.tab-nav { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab-nav div { flex: 1; text-align: center; padding: 10px 0; cursor: pointer; color: var(--text-sub); border-bottom: 2px solid transparent; }
.tab-nav div.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.code-row { display: flex; gap: 8px; }
.code-row .btn { flex-shrink: 0; }

/* 收银台 */
.pay-box { max-width: 560px; margin: 0 auto; }
.pay-amount { font-size: 34px; color: var(--danger); font-weight: 700; text-align: center; padding: 20px 0; }
.pay-method { display: flex; align-items: center; gap: 12px; padding: 14px; border: 1px solid var(--border); border-radius: 10px; margin-bottom: 12px; cursor: pointer; }
.pay-method:hover, .pay-method.active { border-color: var(--primary); background: var(--primary-light); }
.pay-method .pm-ico { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; }
.qr-box { text-align: center; padding: 20px; }
.qr-box canvas, .qr-box img { border: 1px solid var(--border); border-radius: 8px; padding: 8px; background: #fff; }

/* VIP 套餐 */
.vip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.vip-card {
    background: #fff; border-radius: 12px; box-shadow: var(--shadow); padding: 22px; text-align: center; border: 2px solid transparent; transition: .2s;
}
.vip-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.vip-card .vname { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.vip-card .vprice { font-size: 28px; color: var(--danger); font-weight: 700; margin: 10px 0; }
.vip-card ul { text-align: left; margin: 14px 0; }
.vip-card li { padding: 5px 0; color: var(--text-sub); font-size: 13px; }

/* 页脚 */
.site-footer { background: #1f2530; color: #98a0ad; padding: 30px 0 20px; margin-top: 40px; font-size: 13px; }
.site-footer a { color: #cdd3dc; }
.site-footer .cols { display: flex; gap: 40px; flex-wrap: wrap; }
.site-footer .col h4 { color: #fff; font-size: 14px; margin: 0 0 10px; }
.site-footer .copy { border-top: 1px solid #2c3341; margin-top: 20px; padding-top: 16px; text-align: center; }

/* 个人主页 */
.profile-head { display: flex; gap: 20px; align-items: center; padding: 24px; }
.profile-stat { display: flex; gap: 28px; margin-left: auto; text-align: center; }
.profile-stat b { display: block; font-size: 20px; }

/* 响应式 */
@media (max-width: 1000px) {
    .res-grid { grid-template-columns: repeat(3, 1fr); }
    .vip-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-side { width: 280px; }
}
@media (max-width: 768px) {
    .container { padding: 0 10px; }
    .res-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-wrap, .uc-wrap { flex-direction: column; }
    .detail-side, .uc-side { width: 100%; position: static; }
    .uc-nav { display: flex; overflow-x: auto; }
    .uc-nav .uc-user { display: none; }
    .res-grid.cols3, .vip-grid { grid-template-columns: 1fr 1fr; }
    .search-box input { width: 120px; }
    .hero-stats { gap: 20px; }
    .nav a { padding: 6px 8px; }
}
@media (max-width: 480px) {
    .res-grid, .res-grid.cols3, .vip-grid { grid-template-columns: 1fr; }
    .file-list { grid-template-columns: 1fr; }
}

/* ============ 免责声明 ============ */
.disclaimer-box {
    margin: 14px 0 4px;
    padding: 12px 14px;
    background: #fff8e6;
    border: 1px solid #ffe0a3;
    border-radius: 8px;
    font-size: 12px;
    line-height: 1.8;
    color: #8a5a00;
}
.disclaimer-box .disclaimer-title {
    font-weight: 600;
    font-size: 13px;
    color: #b26a00;
    margin-bottom: 6px;
}
.disclaimer-box .disclaimer-text {
    max-height: 132px;
    overflow-y: auto;
    padding-right: 6px;
}
.disclaimer-box .agree-line {
    display: block;
    margin-top: 8px;
    cursor: pointer;
    user-select: none;
    color: #6b4b00;
}
.disclaimer-box .agree-line input { vertical-align: -1px; margin-right: 4px; }

.site-footer .disclaimer {
    margin: 14px 0 10px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, .06);
    border-left: 3px solid #ffb020;
    border-radius: 6px;
    font-size: 12px;
    line-height: 1.9;
    color: #c8cfdb;
}
.site-footer .disclaimer strong { color: #ffb020; }
.site-footer .disclaimer a { color: #ffd479; text-decoration: underline; }