/* ===== 财会学习平台 设计系统 ===== */
:root{
  --primary:#4F46E5; --primary-d:#4338CA; --primary-l:#EEF2FF;
  --accent:#059669; --accent-l:#ECFDF5;
  --warn:#D97706; --warn-l:#FFFBEB;
  --danger:#DC2626; --danger-l:#FEF2F2;
  --ink:#1F2937; --ink-2:#4B5563; --ink-3:#9CA3AF;
  --bg:#F4F6FB; --card:#FFFFFF; --line:#E5E7EB;
  --radius:14px; --shadow:0 1px 3px rgba(16,24,40,.06),0 4px 14px rgba(16,24,40,.06);
  --shadow-lg:0 8px 30px rgba(16,24,40,.14);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.65}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:var(--font);cursor:pointer;border:none;background:none}
input,select,textarea{font-family:var(--font);font-size:14px;color:var(--ink)}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
.boot-splash{display:flex;align-items:center;justify-content:center;height:100vh;font-size:18px;color:var(--ink-2)}

/* ===== 布局 ===== */
.topnav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topnav-in{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:0 16px;height:58px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:17px;color:var(--ink);white-space:nowrap}
.brand:hover{text-decoration:none}
.brand .logo{font-size:22px}
.nav-links{display:flex;gap:2px;flex:1;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-link{padding:6px 12px;border-radius:9px;color:var(--ink-2);font-size:14px;white-space:nowrap}
.nav-link:hover{background:var(--primary-l);color:var(--primary);text-decoration:none}
.nav-link.active{background:var(--primary-l);color:var(--primary);font-weight:600}
.nav-right{display:flex;align-items:center;gap:8px;margin-left:auto}
.icon-btn{width:36px;height:36px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--ink-2);border:1px solid var(--line);background:var(--card)}
.icon-btn:hover{background:var(--primary-l);color:var(--primary)}
.lang-btn{font-size:12px;font-weight:700}
.user-chip{display:flex;align-items:center;gap:8px;padding:4px 10px 4px 4px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:13px;cursor:pointer;position:relative}
.user-chip:hover{background:var(--primary-l)}
.avatar{width:28px;height:28px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.dropdown{position:absolute;top:110%;right:0;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);min-width:170px;padding:6px;z-index:200}
.dropdown a,.dropdown button{display:flex;width:100%;padding:9px 12px;border-radius:8px;color:var(--ink);font-size:14px;text-align:left;align-items:center;gap:8px}
.dropdown a:hover,.dropdown button:hover{background:var(--primary-l);text-decoration:none}
.course-switch{position:relative}
.course-switch>button{display:flex;align-items:center;gap:6px;padding:7px 12px;border-radius:9px;border:1px solid var(--line);background:var(--card);font-size:13px;max-width:220px}
.course-switch>button:hover{border-color:var(--primary);color:var(--primary)}
.course-switch .cs-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.main{max-width:1200px;margin:0 auto;padding:22px 16px 60px}
.footer{border-top:1px solid var(--line);padding:22px 16px;text-align:center;color:var(--ink-3);font-size:12px;background:var(--card)}

/* ===== 通用组件 ===== */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);padding:20px}
.card+.card{margin-top:16px}
.card-title{font-size:16px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:10px;font-size:14px;font-weight:600;border:1px solid transparent;transition:.15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d)}
.btn-outline{border-color:var(--line);color:var(--ink);background:var(--card)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost{color:var(--ink-2);background:transparent}
.btn-ghost:hover{background:var(--primary-l);color:var(--primary)}
.btn-accent{background:var(--accent);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:5px 12px;font-size:13px;border-radius:8px}
.btn-lg{padding:12px 26px;font-size:16px;border-radius:12px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.badge{display:inline-flex;align-items:center;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6}
.badge-primary{background:var(--primary-l);color:var(--primary)}
.badge-green{background:var(--accent-l);color:var(--accent)}
.badge-warn{background:var(--warn-l);color:var(--warn)}
.badge-gray{background:#F3F4F6;color:var(--ink-2)}
.badge-red{background:var(--danger-l);color:var(--danger)}
.progress{height:7px;background:#EDEFF5;border-radius:99px;overflow:hidden}
.progress>div{height:100%;background:linear-gradient(90deg,var(--primary),#818CF8);border-radius:99px;transition:width .4s}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.muted{color:var(--ink-3)}
.small{font-size:12.5px}
.row{display:flex;align-items:center;gap:10px}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:10px}
.wrap{flex-wrap:wrap}
.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.mb8{margin-bottom:8px}.mb16{margin-bottom:16px}
.divider{height:1px;background:var(--line);margin:16px 0}
.empty{text-align:center;padding:44px 20px;color:var(--ink-3)}
.empty .big{font-size:44px;margin-bottom:10px}
.spinner{width:34px;height:34px;border:3px solid var(--primary-l);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:40px auto}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== 表单 ===== */
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:5px}
.input,select.input,textarea.input{width:100%;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;outline:none;transition:.15s}
.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
textarea.input{resize:vertical;min-height:80px}
.form-err{background:var(--danger-l);color:var(--danger);border-radius:9px;padding:9px 12px;font-size:13px;margin-bottom:12px}
.form-ok{background:var(--accent-l);color:var(--accent);border-radius:9px;padding:9px 12px;font-size:13px;margin-bottom:12px}

/* ===== 首页 ===== */
.hero{background:linear-gradient(135deg,#312E81 0%,#4F46E5 55%,#7C6FF0 100%);border-radius:20px;color:#fff;padding:44px 38px;position:relative;overflow:hidden}
.hero::after{content:'🧮';position:absolute;right:24px;bottom:-30px;font-size:150px;opacity:.14;transform:rotate(-12deg)}
.hero h1{font-size:30px;margin-bottom:12px}
.hero p{opacity:.88;max-width:640px;margin-bottom:22px}
.hero .hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn-light{background:#fff;color:var(--primary)}
.hero .btn-glass{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.35)}
.exam-chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.exam-chip{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:12px;padding:9px 14px;font-size:13px}
.exam-chip b{display:block;font-size:14px}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.feature .fi{font-size:26px;margin-bottom:8px}
.feature h3{font-size:15px;margin-bottom:6px}
.feature p{font-size:13px;color:var(--ink-2)}
.course-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px;transition:.15s}
.course-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);text-decoration:none}
.course-card h3{font-size:16.5px;color:var(--ink)}
.course-card .en{font-size:12.5px;color:var(--ink-3)}
.stat-pill{background:var(--bg);border-radius:10px;padding:10px 12px;text-align:center}
.stat-pill b{display:block;font-size:18px;color:var(--primary)}

/* ===== 章节网格 ===== */
.chapter-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);display:flex;gap:14px;transition:.15s}
.chapter-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);text-decoration:none;border-color:#C7D2FE}
.ch-num{width:42px;height:42px;flex:none;border-radius:12px;background:var(--primary-l);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px}
.ch-num.done{background:var(--accent-l);color:var(--accent)}
.ch-num.learning{background:var(--warn-l);color:var(--warn)}
.ch-body{flex:1;min-width:0}
.ch-body h3{font-size:15px;color:var(--ink)}
.ch-body .en{font-size:12px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ch-meta{display:flex;gap:10px;align-items:center;margin-top:8px;font-size:12px;color:var(--ink-3)}
.ch-meta .progress{flex:1}

/* ===== 学习内容页 ===== */
.study-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;flex-wrap:wrap}
.study-intro{background:linear-gradient(135deg,#EEF2FF,#F5F3FF);border:1px solid #E0E7FF;border-radius:12px;padding:16px 18px;font-size:14.5px;color:#3730A3;margin:14px 0}
.sec{margin:18px 0}
.sec h3{font-size:15.5px;color:var(--primary);margin-bottom:8px;display:flex;align-items:center;gap:7px}
.sec h3::before{content:'';width:4px;height:16px;background:var(--primary);border-radius:2px}
.sec ul{padding-left:20px}
.sec li{margin:7px 0;color:var(--ink-2);font-size:14.5px}
.sec p{color:var(--ink-2);margin:8px 0;font-size:14.5px}
.example-box{background:var(--accent-l);border:1px solid #A7F3D0;border-radius:12px;padding:16px}
.example-box .q{font-weight:700;margin-bottom:8px}
.example-box .steps{padding-left:20px;margin:8px 0}
.example-box .steps li{color:var(--ink-2);margin:5px 0}
.example-box .ans{background:#fff;border-radius:9px;padding:10px 12px;font-weight:600;color:var(--accent);border:1px dashed #6EE7B7}
.terms-table{width:100%;border-collapse:collapse;font-size:13.5px}
.terms-table td,.terms-table th{border:1px solid var(--line);padding:7px 10px}
.terms-table th{background:var(--bg);text-align:left;font-weight:600}
.related-row{display:flex;gap:10px;flex-wrap:wrap}
.related-chip{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:13px;background:var(--card)}
.related-chip:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}

/* ===== 练习 ===== */
.practice-bar{position:sticky;top:58px;z-index:50;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 16px;box-shadow:var(--shadow);display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.q-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.q-stem{font-size:16.5px;font-weight:600;line-height:1.7;margin-bottom:18px}
.q-tags{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.opt{display:flex;gap:12px;align-items:flex-start;padding:13px 16px;border:1.5px solid var(--line);border-radius:11px;margin-bottom:10px;cursor:pointer;transition:.13s;background:#fff}
.opt:hover{border-color:var(--primary);background:var(--primary-l)}
.opt .opt-key{width:26px;height:26px;flex:none;border-radius:8px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--ink-2)}
.opt.sel{border-color:var(--primary);background:var(--primary-l)}
.opt.sel .opt-key{background:var(--primary);color:#fff}
.opt.correct{border-color:var(--accent);background:var(--accent-l)}
.opt.correct .opt-key{background:var(--accent);color:#fff}
.opt.wrong{border-color:var(--danger);background:var(--danger-l)}
.opt.wrong .opt-key{background:var(--danger);color:#fff}
.opt.disabled{cursor:default}
.num-input{width:220px;padding:12px 14px;font-size:17px;border:1.5px solid var(--line);border-radius:11px;outline:none}
.num-input:focus{border-color:var(--primary)}
.feedback{border-radius:12px;padding:16px 18px;margin-top:16px;animation:fadein .25s}
.feedback.ok{background:var(--accent-l);border:1px solid #A7F3D0}
.feedback.no{background:var(--danger-l);border:1px solid #FECACA}
.feedback .fb-title{font-weight:800;margin-bottom:6px}
.feedback.ok .fb-title{color:var(--accent)}
.feedback.no .fb-title{color:var(--danger)}
.feedback .fb-exp{font-size:14px;color:var(--ink-2);margin-top:6px}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(38px,1fr));gap:7px}
.pal-cell{height:38px;border-radius:9px;border:1.5px solid var(--line);background:#fff;font-size:13px;font-weight:600;color:var(--ink-2);display:flex;align-items:center;justify-content:center;cursor:pointer}
.pal-cell.done{background:var(--primary-l);border-color:var(--primary);color:var(--primary)}
.pal-cell.cur{outline:2px solid var(--primary);outline-offset:1px}
.pal-cell.right{background:var(--accent-l);border-color:var(--accent);color:var(--accent)}
.pal-cell.wrong{background:var(--danger-l);border-color:var(--danger);color:var(--danger)}

/* ===== 考试 ===== */
.exam-top{position:sticky;top:0;z-index:90;background:#1E1B4B;color:#fff;padding:12px 20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.exam-top .timer{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;background:rgba(255,255,255,.12);padding:5px 16px;border-radius:10px}
.exam-top .timer.danger{background:var(--danger);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.75}}
.exam-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px}
.score-hero{text-align:center;padding:30px 16px}
.score-big{font-size:56px;font-weight:800;line-height:1}
.score-pass{color:var(--accent)}
.score-fail{color:var(--danger)}
.type-bar{display:flex;align-items:center;gap:12px;margin:8px 0}
.type-bar .tb-label{width:88px;font-size:13px;color:var(--ink-2);flex:none}
.type-bar .progress{flex:1}
.type-bar .tb-val{width:110px;text-align:right;font-size:13px;font-variant-numeric:tabular-nums}
.review-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.review-item .ri-head{padding:13px 16px;display:flex;gap:10px;align-items:center;cursor:pointer;background:#fff}
.review-item .ri-head:hover{background:var(--bg)}
.review-item .ri-body{padding:0 16px 16px;border-top:1px dashed var(--line)}
.ua-tag{font-size:12px;padding:2px 8px;border-radius:6px}

/* ===== 数据分析 ===== */
.radar-wrap{height:340px}
.chart-box{height:260px}
.pred-band{position:relative;height:14px;background:linear-gradient(90deg,#FCA5A5,#FCD34D 45%,#6EE7B7);border-radius:99px;margin:26px 8px 6px}
.pred-marker{position:absolute;top:-7px;width:4px;height:28px;background:var(--ink);border-radius:2px;transform:translateX(-50%)}
.pred-range-label{position:absolute;top:-30px;transform:translateX(-50%);background:var(--ink);color:#fff;font-size:12px;padding:3px 9px;border-radius:7px;white-space:nowrap}
.checkin-strip{display:flex;gap:6px}
.ck-cell{width:30px;height:30px;border-radius:8px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--ink-3)}
.ck-cell.on{background:var(--accent);color:#fff}
.suggest-item{display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line)}
.suggest-item:last-child{border-bottom:none}
.suggest-item .si-dot{width:34px;height:34px;flex:none;border-radius:10px;background:var(--warn-l);color:var(--warn);display:flex;align-items:center;justify-content:center;font-weight:800}

/* ===== 个人中心/后台 ===== */
.side-layout{display:grid;grid-template-columns:200px 1fr;gap:18px;align-items:start}
.side-menu{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:10px;position:sticky;top:74px}
.side-menu a{display:flex;align-items:center;gap:9px;padding:10px 12px;border-radius:9px;color:var(--ink-2);font-size:14px}
.side-menu a:hover{background:var(--primary-l);color:var(--primary);text-decoration:none}
.side-menu a.active{background:var(--primary);color:#fff}
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th{background:var(--bg);text-align:left;padding:9px 12px;font-weight:600;color:var(--ink-2);white-space:nowrap}
.table td{padding:9px 12px;border-top:1px solid var(--line);vertical-align:top}
.table tr:hover td{background:#FAFBFF}
.pager{display:flex;gap:8px;align-items:center;justify-content:center;margin-top:14px}

/* ===== 计算器 ===== */
.calc-win{position:fixed;z-index:1000;width:280px;background:#1F2937;border-radius:16px;box-shadow:var(--shadow-lg);color:#fff;user-select:none;overflow:hidden}
.calc-head{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;background:#111827;cursor:move;font-size:13px;font-weight:600}
.calc-head .calc-close{cursor:pointer;opacity:.7;padding:2px 6px;border-radius:6px}
.calc-head .calc-close:hover{opacity:1;background:#374151}
.calc-display{padding:12px 14px 6px;text-align:right;min-height:70px}
.calc-expr{font-size:13px;color:#9CA3AF;min-height:18px;word-break:break-all}
.calc-result{font-size:27px;font-weight:700;font-variant-numeric:tabular-nums;word-break:break-all}
.calc-mode{display:flex;gap:6px;padding:0 12px 8px}
.calc-mode button{flex:1;font-size:11px;padding:4px;border-radius:7px;background:#374151;color:#D1D5DB}
.calc-mode button.on{background:var(--primary);color:#fff}
.calc-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:0 12px 12px}
.calc-keys.sci{grid-template-columns:repeat(5,1fr)}
.calc-keys button{height:42px;border-radius:10px;font-size:16px;font-weight:600;background:#374151;color:#fff}
.calc-keys button:hover{background:#4B5563}
.calc-keys button.op{background:#4F46E5}
.calc-keys button.op:hover{background:#4338CA}
.calc-keys button.eq{background:#059669;grid-row:span 2;height:auto}
.calc-keys button.eq:hover{background:#047857}
.calc-keys button.fn{font-size:12px;background:#2B3546}
.calc-keys button.mem{font-size:11px;background:#2B3546;color:#93C5FD}
.calc-fab{position:fixed;right:18px;bottom:18px;z-index:999;width:50px;height:50px;border-radius:50%;background:var(--primary);color:#fff;font-size:21px;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center}
.calc-fab:hover{background:var(--primary-d);transform:scale(1.06)}

/* ===== 考试模式：隐藏主导航，沉浸式答题 ===== */
body.exam-mode .topnav{display:none}
body.exam-mode .main{padding-top:16px}

/* ===== Toast/Modal ===== */
#toast-wrap{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:2000;display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{background:#111827;color:#fff;padding:10px 20px;border-radius:10px;font-size:14px;box-shadow:var(--shadow-lg);animation:fadein .2s;max-width:90vw}
.toast.err{background:var(--danger)}
.toast.ok{background:var(--accent)}
.modal-mask{position:fixed;inset:0;background:rgba(17,24,39,.5);z-index:1500;display:flex;align-items:center;justify-content:center;padding:16px;animation:fadein .15s}
.modal{background:var(--card);border-radius:16px;box-shadow:var(--shadow-lg);width:100%;max-width:520px;max-height:88vh;overflow:auto;padding:24px}
.modal.wide{max-width:760px}
.modal h3{font-size:17px;margin-bottom:14px}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .grid-3,.grid-4,.feature-grid{grid-template-columns:repeat(2,1fr)}
  .side-layout{grid-template-columns:1fr}
  .side-menu{position:static;display:flex;overflow-x:auto}
  .side-menu a{white-space:nowrap}
  .hero{padding:30px 22px}
  .hero h1{font-size:24px}
}
@media(max-width:640px){
  .grid-2,.grid-3,.grid-4,.feature-grid{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:58px;left:0;right:0;background:var(--card);flex-direction:column;padding:10px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg)}
  .hero h1{font-size:21px}
  .q-card{padding:18px}
  .num-input{width:100%}
  .calc-win{width:260px}
  .course-switch>button{max-width:140px}
}

/* ===== V2：政策解读 ===== */
.policy-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.ptab{padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:14px;color:var(--ink-2);cursor:pointer}
.ptab:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
.ptab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.policy-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px;transition:.15s}
.policy-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);text-decoration:none}
.policy-card h3{font-size:15.5px;color:var(--ink);line-height:1.45}
.policy-meta{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:12px;color:var(--ink-3)}
.region-tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}
.region-mainland{background:#FEF2F2;color:#DC2626}
.region-hk{background:#EFF6FF;color:#2563EB}
.region-intl{background:#F5F3FF;color:#7C3AED}
.policy-sec{border-left:4px solid var(--primary);background:var(--bg);border-radius:0 12px 12px 0;padding:14px 16px;margin:14px 0}
.policy-sec h4{font-size:14px;margin-bottom:6px;display:flex;gap:6px;align-items:center}
.policy-sec p{font-size:14px;color:var(--ink-2);white-space:pre-wrap}
.policy-sec.s1{border-color:#6366F1}.policy-sec.s2{border-color:#059669}
.policy-sec.s3{border-color:#D97706}.policy-sec.s4{border-color:#DC2626}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.filter-bar .input{width:auto;min-width:130px}

/* ===== V2：香港税务 ===== */
.tax-topic{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:.15s;display:block}
.tax-topic:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);text-decoration:none;border-color:#93C5FD}
.calc-panel{max-width:680px}
.calc-result-box{background:linear-gradient(135deg,#1E1B4B,#312E81);color:#fff;border-radius:14px;padding:20px;margin-top:18px}
.calc-result-box .cr-label{font-size:13px;opacity:.8}
.calc-result-box .cr-value{font-size:34px;font-weight:800;margin:4px 0}
.calc-steps{margin-top:12px;border-top:1px solid rgba(255,255,255,.2);padding-top:12px}
.calc-steps li{font-size:13.5px;opacity:.92;margin:6px 0;list-style:none;padding-left:18px;position:relative}
.calc-steps li::before{content:'▸';position:absolute;left:0}
.article-content{white-space:pre-wrap;font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.form-field{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:12px;background:#fff}
.form-field.err{border-color:var(--danger);background:var(--danger-l)}
.form-field .ff-label{font-weight:600;font-size:14px;margin-bottom:6px}
.form-field .ff-hint{font-size:12px;color:var(--ink-3);margin-top:4px}
.form-field .ff-err{font-size:12.5px;color:var(--danger);margin-top:5px;font-weight:600}

/* ===== V2：视频中心 ===== */
.video-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.15s;display:block}
.video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);text-decoration:none}
.video-thumb{height:150px;background:linear-gradient(135deg,#1E1B4B,#4F46E5);display:flex;align-items:center;justify-content:center;font-size:42px;color:rgba(255,255,255,.85);position:relative}
.video-thumb .vt-dur{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.65);color:#fff;font-size:11px;padding:2px 8px;border-radius:6px}
.video-thumb .vt-done{position:absolute;left:8px;top:8px;background:var(--accent);color:#fff;font-size:11px;padding:2px 8px;border-radius:6px}
.video-body{padding:14px 16px}
.video-body h3{font-size:15px;color:var(--ink)}
.watch-bar{height:4px;background:var(--line);border-radius:99px;margin-top:10px;overflow:hidden}
.watch-bar>div{height:100%;background:var(--accent)}
.player-wrap{background:#000;border-radius:14px;overflow:hidden}
.player-wrap video{width:100%;max-height:65vh;display:block}
.player-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px 16px;background:var(--card);border:1px solid var(--line);border-radius:12px;margin-top:12px}
.player-bar select{padding:6px 10px;border:1.5px solid var(--line);border-radius:8px}

/* ===== V2：案例阅读 ===== */
.case-reader{position:relative}
.case-content{white-space:pre-wrap;font-size:15px;line-height:1.9;color:var(--ink)}
.hl-yellow{background:#FEF08A;padding:0 2px;border-radius:3px}
.hl-green{background:#BBF7D0;padding:0 2px;border-radius:3px}
.hl-pink{background:#FBCFE8;padding:0 2px;border-radius:3px}
.annot-panel{position:sticky;top:74px}
.annot-item{border-left:3px solid #F59E0B;background:var(--warn-l);border-radius:0 10px 10px 0;padding:10px 12px;margin-bottom:10px;font-size:13px}
.annot-item .quote{color:var(--ink);font-weight:600}
.annot-item .note{color:var(--ink-2);margin-top:4px}
.annot-item .del{float:right;color:var(--ink-3);cursor:pointer}
.sel-pop{position:absolute;z-index:300;background:#1F2937;color:#fff;border-radius:10px;padding:6px;display:flex;gap:6px;box-shadow:var(--shadow-lg)}
.sel-pop button{color:#fff;font-size:12px;padding:5px 10px;border-radius:7px;background:#374151}
.sel-pop button:hover{background:#4B5563}
.answer-area{width:100%;min-height:220px;font-family:var(--font);font-size:14px;line-height:1.7;padding:14px;border:1.5px solid var(--line);border-radius:12px;resize:vertical}
.case-timer{font-variant-numeric:tabular-nums;font-weight:800;font-size:17px;background:var(--primary-l);color:var(--primary);padding:5px 14px;border-radius:9px}

/* ===== V2：后台扩展 ===== */
.admin-tag{display:inline-block;background:var(--primary-l);color:var(--primary);border-radius:6px;padding:1px 8px;font-size:12px;margin-right:4px}
.vrow{display:flex;gap:10px;align-items:center;padding:10px 0;border-bottom:1px dashed var(--line)}
.vrow:last-child{border-bottom:none}
.notif-bell{position:relative}
.notif-bell .nb-dot{position:absolute;top:-3px;right:-3px;background:var(--danger);color:#fff;font-size:10px;min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 4px;font-weight:700}
.notif-item{padding:12px;border-bottom:1px dashed var(--line);cursor:pointer}
.notif-item.unread{background:var(--primary-l)}
.notif-item:hover{background:var(--bg)}

/* ===== V3：常见错误提醒 + 自检清单 ===== */
.sec-warn{background:#FFF7ED;border:1px solid #FED7AA;border-radius:12px;padding:16px 18px}
.sec-warn h3{color:#C2410C}
.warn-list li{color:#7C2D12;margin:8px 0;font-size:14px}
.sec-check{background:#F0FDF4;border:1px solid #BBF7D0;border-radius:12px;padding:16px 18px}
.sec-check h3{color:#15803D}
.check-list{list-style:none;padding:0}
.check-list li{margin:8px 0;font-size:14px;color:#14532D}
.check-list label{display:flex;gap:8px;align-items:flex-start;cursor:pointer}
.check-list input[type=checkbox]{margin-top:3px;accent-color:#16A34A;width:16px;height:16px}
.check-list input:checked+span{text-decoration:line-through;opacity:.55}
/* 政策法例原文/对比板块 */
.policy-sec.s5{border-color:#0E7490}
.policy-sec.s6{border-color:#6D28D9}