:root{
  --primary:#ff6a00;
  --primary-d:#e85d00;
  --accent:#ff3b30;
  --ink:#1d2340;
  --indigo:#4b53c9;
  --indigo-d:#373e9e;
  --bg:#f5f6f8;
  --card:#ffffff;
  --text:#222;
  --muted:#888;
  --border:#ececec;
  --ok:#1faa59;
  --warn:#d97706;
  --shadow:0 6px 24px rgba(29,35,64,.08);
  --shadow-lg:0 14px 40px rgba(29,35,64,.14);
  --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6;overflow-x:hidden}
html{overflow-x:hidden}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1280px;margin:0 auto;padding:0 16px}
img{max-width:100%}

/* 让装饰型 section「逃出」<main class="container"> 的 1280px 限制，
   真正铺满 viewport；内部仍走 .container 让文字居中 */
/* 双 class 选择器把特异性从 (0,1,0) 提到 (0,2,0)，避免被 .cta-band/.hero 之类
   自己的 width:100%/max-width 覆盖（这样窄屏也会真正铺满） */
.full-bleed.full-bleed{position:relative;width:100vw;left:50%;margin-left:-50vw}

/* ===== 导航 ===== */
.nav{background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;box-shadow:0 2px 14px rgba(29,35,64,.06)}
.nav .inner{display:flex;align-items:center;height:64px;gap:18px}
.logo{font-weight:800;font-size:21px;color:var(--ink);white-space:nowrap;display:flex;align-items:center;gap:8px}
.logo small{color:var(--muted);font-weight:400;font-size:12px;margin-left:2px}
.nav a.link{color:#444;font-size:14px;padding:8px 14px;border-radius:999px;transition:.18s}
.nav a.link:hover{text-decoration:none;color:var(--primary);background:var(--bg)}
.nav a.link.active{color:var(--primary);background:linear-gradient(135deg,#fff3e8,#ffe6cc);font-weight:700}
.nav .spacer{flex:1}
.nav .user{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;font-size:20px;cursor:pointer;color:var(--ink)}
.nav-collapse{display:flex;align-items:center;flex:1;gap:18px}
.nav-links{display:flex;align-items:center;gap:6px;min-width:0}
.nav-links a.link{white-space:nowrap;flex:none;padding:0 8px;font-size:15px;color:var(--text);text-decoration:none;transition:color .15s}
.nav-links a.link:hover{color:var(--primary)}
.nav-links a.link.active{color:var(--primary);font-weight:700}
.spacer{flex:1;min-width:0}
.user{flex:none;display:flex;align-items:center;gap:8px}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border-radius:10px;border:1px solid var(--border);background:#fff;color:#333;cursor:pointer;font-size:14px;transition:.18s;font-family:inherit}
.btn:hover{text-decoration:none;border-color:var(--primary);transform:translateY(-1px)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d);color:#fff}
.btn-danger{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-sm{padding:5px 10px;font-size:13px}
.btn-lg{padding:12px 26px;font-size:16px;border-radius:12px}
.btn-block{width:100%}
.btn-ghost{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.28);color:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:#ffe9d6;color:var(--primary-d)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.18);color:#fff}

/* ===== 卡片 / 栅格 ===== */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:16px;box-shadow:var(--shadow)}
.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)}
.title{font-size:18px;font-weight:700;margin:0 0 12px}
.muted{color:var(--muted)}
.muted-xs{color:var(--muted);font-size:12px}
.tag{display:inline-block;padding:2px 8px;border-radius:6px;background:#fff3e8;color:var(--primary);font-size:12px;margin:2px}
.tag.gray{background:#f0f0f0;color:#666}
.tag.green{background:#e7f7ee;color:var(--ok)}
.tag.red{background:#ffe9e7;color:var(--accent)}
/* 课程：免费试看 / 付费锁标记 */
.ch-locked{text-align:center;padding:46px 20px;border:1px dashed var(--border);border-radius:14px;background:#fafbfc;margin:14px 0}
.ch-lock-ico{font-size:44px;line-height:1;margin-bottom:6px}
.ch-locked h3{margin:8px 0 4px}
.m-ch-tag-lock{color:#e0532f;font-style:normal}
.m-ch-tag-owned{color:#16a34a;font-style:normal}

/* ================= 练习首页 ================= */
/* Hero 头部 */
.practice-hero{display:flex;gap:18px;align-items:center;background:linear-gradient(120deg,#2a2f6e 0%,#4b53c9 55%,#7b5bef 100%);color:#fff;border-radius:16px;padding:26px 28px;margin-bottom:16px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.practice-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(420px 220px at 88% -20%,rgba(255,106,0,.45),transparent 60%),radial-gradient(360px 200px at 0% 130%,rgba(123,91,239,.5),transparent 60%);pointer-events:none}
.ph-emoji{flex:none;width:62px;height:62px;border-radius:16px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);display:flex;align-items:center;justify-content:center;font-size:32px;position:relative;z-index:1}
.ph-main{position:relative;z-index:1;min-width:0}
.ph-badge{display:inline-block;padding:4px 12px;border-radius:999px;background:linear-gradient(90deg,rgba(255,106,0,.22),rgba(255,183,77,.22));color:#ffe4b8;font-size:12px;font-weight:600;margin-bottom:10px;letter-spacing:.3px;border:1px solid rgba(255,183,77,.35);box-shadow:0 0 0 1px rgba(255,255,255,.04) inset}
.practice-hero h1{margin:0 0 8px;font-size:28px;font-weight:800;letter-spacing:.4px;background:linear-gradient(90deg,#fff 0%,#ffe4b8 60%,#ffb86b 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:#fff}
.practice-hero p{margin:0 0 12px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.94)}
.practice-hero p b{color:#ffd88f;font-weight:800}
.ph-soft{color:rgba(255,255,255,.78)}
.ph-stats{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.92)}
.ph-tag{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:10px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(4px);font-size:12.5px;color:#fff;line-height:1.4;white-space:nowrap}
.ph-stat b{font-weight:800;color:#fff;font-size:15px;margin-right:2px}
.ph-dot{color:rgba(255,255,255,.55)}

/* 开始练习 表单（三级联动：大分类 → 二级分类 → 题目数量） */
.pf-form{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.pf-form .pf-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.pf-form input[type=number]{padding:10px 12px}
.pf-step{display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:start}
.pf-step-no{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,#ff8a3d,#ff6a00);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px;box-shadow:0 4px 10px rgba(255,106,0,.18);margin-top:26px}
.pf-step-body{margin:0}
.pf-step-body label{display:flex;align-items:baseline;gap:6px;margin-bottom:6px;font-weight:600;color:var(--ink)}
.pf-select,.pf-count{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:10px;background:#fff;font-size:14px;color:var(--ink);transition:.15s}
.pf-select:focus,.pf-count:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,106,0,.12);outline:none}
.pf-select:disabled{background:#f5f6f8;color:var(--muted);cursor:not-allowed}
.pf-check{display:inline-flex;align-items:center;gap:8px;font-weight:500;color:#444;margin:0;cursor:pointer;user-select:none}
.pf-check input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary)}

/* 练习进度 / 批次导航（练习中页面 pickCtx） */
.pick-ctx{margin-top:12px;padding:10px 12px;background:linear-gradient(180deg,#fff7ec 0%,#fff 100%);border:1px dashed #f6c998;border-radius:12px}
.pick-ctx-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.pick-ctx-links{margin-top:8px}
.pick-chip{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid #f0e0c7;color:#6d4a1a;font-size:13px;padding:5px 10px;border-radius:999px}
.pick-chip b{color:#c45600}
.pick-link{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:#fff;border:1px solid #e3ddcf;color:#5a461a;border-radius:10px;font-size:13px;font-weight:600;text-decoration:none;transition:.15s}
.pick-link:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 3px 8px rgba(255,106,0,.08)}
.pick-link-accent{background:linear-gradient(135deg,#ff8a3d,#ff6a00);color:#fff;border-color:transparent;box-shadow:0 4px 10px rgba(255,106,0,.18)}
.pick-link-accent:hover{color:#fff;opacity:.94}

/* 题库 筛选条 */
.pf-filter{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:16px 0 12px}
.pf-search{position:relative;flex:1;min-width:220px;display:flex;align-items:center}
.pf-search-ico{position:absolute;left:12px;color:var(--muted);pointer-events:none;font-size:14px}
.pf-search input{width:100%;padding:10px 14px 10px 36px;border:1px solid var(--border);border-radius:10px;background:#fff;font-size:14px;transition:.15s}
.pf-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,106,0,.12);outline:none}
.pf-type{flex:none;width:auto;min-width:130px}

/* 题库 题目列表 */
.qlist{margin-top:8px;display:flex;flex-direction:column;gap:12px}
.qitem{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--border);border-radius:12px;padding:14px 16px;background:#fff;transition:.15s}
.qitem:hover{border-color:var(--primary);box-shadow:0 6px 18px rgba(29,35,64,.08)}
.qno{flex:none;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#fff1e3,#ffe0c2);color:var(--primary);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px}
.qbody{flex:1;min-width:0}
.qtop{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:7px}
.qtop .stars{color:#f5a623;font-size:13px;letter-spacing:1px}
.qtop-spacer{flex:1}
.qscore{flex:none}
.qstem{font-size:15px;line-height:1.65;color:#222;margin-bottom:11px;word-break:break-word}
.qactions{display:flex;gap:8px;flex-wrap:wrap}

/* ===== 表单 ===== */
.form-group{margin-bottom:14px}
.form-group label{display:block;margin-bottom:6px;color:#555;font-size:13px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,106,0,.12)}

/* ===== 登录 / 注册专属 ===== */
.auth-wrap{max-width:460px;margin:36px auto;padding:0 16px}
.auth-card{background:#fff;border-radius:20px;padding:32px 30px 28px;box-shadow:0 16px 48px rgba(29,35,64,.10);border:1px solid var(--border);position:relative;overflow:hidden}
.auth-card::before{content:"";position:absolute;top:-40px;right:-40px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(255,106,0,.12),transparent 65%);pointer-events:none}
.auth-card::after{content:"";position:absolute;bottom:-60px;left:-50px;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(75,83,201,.08),transparent 65%);pointer-events:none}
.auth-card .auth-title{font-size:24px;font-weight:800;color:var(--ink);margin:0 0 4px;letter-spacing:.5px;position:relative;z-index:1}
.auth-card .auth-sub{color:var(--muted);font-size:13px;margin:0 0 24px;position:relative;z-index:1}
.auth-card .form-group{margin-bottom:18px;position:relative;z-index:1}
.auth-card .form-group > label{font-size:13.5px;color:#444;font-weight:600;margin-bottom:8px}
.auth-card input{padding:12px 14px;font-size:14.5px;border-radius:12px;min-height:44px;transition:.2s}
.auth-card .captcha-row{display:flex;gap:10px;align-items:center}
.auth-card .captcha-row > input{flex:1;min-width:0}
.auth-card .captcha-row > img{width:130px;height:44px;flex-shrink:0;border-radius:12px;cursor:pointer;border:1px solid var(--border);object-fit:cover;transition:.18s}
.auth-card .captcha-row > img:hover{border-color:var(--primary);transform:translateY(-1px)}
.auth-card .send-code-row{display:flex;gap:10px;align-items:center}
.auth-card .send-code-row > input{flex:1;min-width:0}
.auth-card .send-code-row > button{flex-shrink:0;white-space:nowrap;min-height:44px;padding:0 14px;border-radius:12px;background:#fff6ee;color:var(--primary-d);border:1px solid #ffd8b5;font-weight:600;cursor:pointer;transition:.18s;font-size:13.5px}
.auth-card .send-code-row > button:hover:not(:disabled){background:linear-gradient(135deg,#fff3e8,#ffe2c4)}
.auth-card .send-code-row > button:disabled{background:#f6f6f8;color:#bbb;border-color:#eee;cursor:not-allowed}
.auth-card .agree-box{position:relative;z-index:1;display:flex;align-items:flex-start;gap:12px;padding:16px 18px;margin:8px 0 22px;background:linear-gradient(135deg,#fff8f1 0%,#fff 100%);border:1px solid #ffe0c2;border-radius:14px;transition:.18s}
.auth-card .agree-box:hover{border-color:#ffc89a;box-shadow:0 4px 14px rgba(255,106,0,.08)}
.auth-card .agree-box > input[type=checkbox]{width:20px;height:20px;min-height:20px;flex-shrink:0;margin-top:2px;accent-color:var(--primary);cursor:pointer}
.auth-card .agree-box > label{flex:1;min-width:0;color:#444;font-size:14px;line-height:1.75;margin:0;cursor:pointer}
.auth-card .agree-box > label a{color:var(--primary);font-weight:600;margin:0 2px;text-decoration:none;transition:.15s}
.auth-card .agree-box > label a:hover{color:var(--primary-d);text-decoration:underline}
.auth-card .submit-btn{width:100%;min-height:48px;border-radius:14px;font-size:16px;font-weight:700;letter-spacing:2px;box-shadow:0 8px 20px rgba(255,106,0,.22);position:relative;z-index:1;transition:.2s;background:linear-gradient(135deg,#ff8a3d 0%,var(--primary) 100%);border-color:transparent}
.auth-card .submit-btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,0,.28);opacity:.97}
.auth-card .foot-links{position:relative;z-index:1;margin-top:18px;padding-top:16px;border-top:1px dashed #f0ecec;text-align:center;color:var(--muted);font-size:13.5px}
.auth-card .foot-links a{color:var(--primary);font-weight:600;margin:0 3px}
.auth-card .foot-links .sep{margin:0 6px;color:#d8d8d8}
.auth-card .alert{margin-bottom:18px;position:relative;z-index:1;padding:12px 16px;border-radius:12px;font-size:13.5px}
@media (max-width:480px){
  .auth-wrap{margin:18px auto;padding:0 12px}
  .auth-card{padding:24px 18px 22px;border-radius:16px}
  .auth-card .auth-title{font-size:21px}
  .auth-card .agree-box{padding:14px}
}

table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}
th{background:#fafafa;color:#666;font-weight:600}
tr:hover td{background:#fcfcfc}

.alert{padding:10px 14px;border-radius:10px;margin-bottom:14px;font-size:13px}
.alert-danger{background:#ffe9e7;color:var(--accent)}
.alert-success{background:#e7f7ee;color:var(--ok)}
.alert-info{background:#eaf3ff;color:#1d6fd0}

.stat{display:flex;flex-direction:column;gap:4px}
.stat .num{font-size:26px;font-weight:800;color:var(--primary)}
.stat .lbl{color:var(--muted);font-size:13px}

.pager{display:flex;gap:6px;justify-content:center;align-items:center;flex-wrap:wrap;margin:18px 0 6px}
.pager a,.pager span,.pager .ellipsis{padding:6px 12px;border:1px solid var(--border);border-radius:8px;color:#555;background:#fff;font-size:13.5px;text-decoration:none;transition:.15s}
.pager a:hover{border-color:var(--primary);color:var(--primary);background:#fff8f3}
.pager .prev,.pager .next{padding:6px 14px}
.pager .disabled{background:#f5f6f8;color:#b3b7c5;cursor:not-allowed;border-color:#eef0f4}
.pager .ellipsis{border:none;background:transparent;color:#9aa0b5;letter-spacing:2px;padding:6px 4px}
.pager .cur{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600;cursor:default}
.pager .cur:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.pager .pager-total{margin-left:6px;border:none;background:transparent;color:#9aa0b5;font-size:12.5px;padding:6px 4px}

.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;align-items:center;justify-content:center;z-index:100}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:12px;padding:20px;width:min(560px,92vw);max-height:86vh;overflow:auto}
.q-item{border:1px solid var(--border);border-radius:10px;padding:14px;margin-bottom:12px;background:#fff}
.q-sub{border-top:1px dashed var(--border);margin-top:12px;padding-top:12px;padding-left:18px;border-left:3px solid var(--primary)}
.q-stem{font-weight:600;margin-bottom:10px;line-height:1.6}
.opt{display:block;padding:8px 12px;border:1px solid var(--border);border-radius:8px;margin-bottom:6px;cursor:pointer}
.opt.sel{border-color:var(--primary);background:#fff3e8}
.opt.correct{border-color:var(--ok);background:#e7f7ee}
.opt.wrong{border-color:var(--accent);background:#ffe9e7}
.hidden{display:none}

/* ===== 电脑端右侧悬浮条（公众号/小程序/APP/客服/回到顶部） ===== */
.float-bar{position:fixed;right:16px;top:50%;transform:translateY(-50%);z-index:80;display:flex;flex-direction:column;gap:10px}
.fb-item{position:relative;width:54px;height:54px;border-radius:14px;background:#fff;border:1px solid var(--border);box-shadow:0 4px 14px rgba(29,35,64,.08);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:.2s;text-decoration:none;color:#555}
.fb-item:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 18px rgba(255,106,0,.18)}
.fb-ico{font-size:20px;line-height:1}
.fb-txt{font-size:10px;margin-top:3px;font-weight:700}
.fb-item a{color:inherit;text-decoration:none}
.fb-pop{position:absolute;right:64px;top:50%;transform:translateY(-50%);background:#fff;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.16);padding:12px 12px 10px;display:none;flex-direction:column;align-items:center;width:150px;border:1px solid #f0f0f0;cursor:default}
.fb-item:hover .fb-pop{display:flex}
.fb-pop img{width:126px;height:126px;object-fit:contain;border-radius:8px;background:#fff}
.fb-pop-t{font-size:12px;color:#666;margin-top:8px;font-weight:600}
.fb-kf-id{font-size:15px;font-weight:800;color:var(--primary);margin:8px 0;letter-spacing:.5px}
.fb-top{background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;border:none}
.fb-top:hover{color:#fff;border:none;box-shadow:0 6px 18px rgba(255,106,0,.35)}
@media (max-width:860px){.float-bar{display:none}}

/* ===== 聊天浮窗 ===== */
.chat-fab{position:fixed;right:22px;bottom:22px;width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:24px;cursor:pointer;box-shadow:0 4px 16px rgba(255,106,0,.4);z-index:90}
.chat-box{position:fixed;right:22px;bottom:90px;width:min(380px,92vw);height:520px;background:#fff;border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.18);display:none;flex-direction:column;z-index:91;overflow:hidden}
.chat-box.show{display:flex}
.chat-head{background:var(--primary);color:#fff;padding:12px 14px;font-weight:600;display:flex;justify-content:space-between;align-items:center}
.chat-body{flex:1;overflow:auto;padding:12px;background:#f7f8fa}
.chat-msg{margin-bottom:10px;max-width:85%;position:relative}
.chat-msg.ai{background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:10px}
.chat-msg.me{background:var(--primary);color:#fff;padding:8px 12px;border-radius:10px;margin-left:auto}
/* 单条消息删除按钮（hover 显示）+ 清空全部按钮 */
.chat-msg-del{position:absolute;top:6px;right:6px;width:20px;height:20px;border-radius:999px;background:rgba(255,77,79,.12);color:#ff6b6b;border:none;font-size:12px;line-height:20px;cursor:pointer;display:none;padding:0;transition:all .15s}
.chat-msg:hover .chat-msg-del{display:block}
.chat-msg-del:hover{background:#ff4d4f;color:#fff;transform:scale(1.1);box-shadow:0 2px 8px rgba(255,77,79,.35)}
.chat-msg.me .chat-msg-del{background:rgba(255,255,255,.25);color:#fff}
.chat-msg.me .chat-msg-del:hover{background:#fff;color:#ff4d4f;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.chat-head-actions{display:flex;align-items:center;gap:8px}
.chat-head-actions .btn-clear{display:inline-flex;align-items:center;gap:4px;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.32);backdrop-filter:blur(6px);padding:4px 12px;border-radius:999px;font-size:12px;cursor:pointer;transition:all .15s;line-height:1.4}
.chat-head-actions .btn-clear:hover{background:rgba(255,255,255,.3);border-color:rgba(255,255,255,.6);transform:translateY(-1px)}
.chat-head-actions .btn-close{width:24px;height:24px;border-radius:999px;background:rgba(255,255,255,.16);color:#fff;border:none;font-size:14px;line-height:24px;cursor:pointer;transition:all .2s;padding:0;text-align:center}
.chat-head-actions .btn-close:hover{background:rgba(255,255,255,.35);transform:rotate(90deg)}
.chat-empty{padding:30px 12px;text-align:center;color:#b3b7c5;font-size:13px;letter-spacing:.5px}
.chat-input{display:flex;border-top:1px solid var(--border)}
.chat-input textarea{flex:1;border:none;padding:10px;resize:none;height:46px}
.chat-input button{border:none;background:var(--primary);color:#fff;padding:0 16px}

.footer{text-align:center;color:var(--muted);padding:30px 0;font-size:12px}
.banner{background:linear-gradient(120deg,var(--primary),#ff9a3c);color:#fff;border-radius:14px;padding:30px;margin-bottom:18px}
.banner h1{margin:0 0 8px;font-size:26px}

/* =========================================================
   新版落地页 / 课程组件
   ========================================================= */

/* 公告条 */
.notice-bar{display:flex;align-items:center;gap:10px;background:#fff8f0;border:1px solid #ffe2c2;border-radius:12px;padding:8px 14px;margin:14px 0 0}
.notice-tag{flex:none;background:#fef3c7;color:#b45309;font-size:12px;padding:2px 8px;border-radius:6px;font-weight:600}
.notice-scroll{flex:1;overflow:hidden;white-space:nowrap}
.notice-scroll a{color:#555;font-size:13px;margin-right:24px}
.notice-more{flex:none;color:var(--primary);font-size:13px}

/* 首页首屏：轮播图作为底层 + Hero 文字前景（合并 Section） */
.hero-carousel{position:relative;height:480px;overflow:hidden;background:#1f2557;color:#fff}
.hero-carousel .carousel-track{position:absolute;inset:0;z-index:0}
.hero-carousel .carousel-slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;background-size:cover;background-position:center;background-color:#1f2557}
.hero-carousel .carousel-slide.active{opacity:1;z-index:1}
.hero-carousel .carousel-img{position:absolute;inset:0;width:100%;height:100%;background-size:cover;background-position:center;background-repeat:no-repeat}
.hero-carousel .carousel-orb{position:absolute;border-radius:50%;pointer-events:none;z-index:2}
.hero-carousel .carousel-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,18,55,.78) 0%,rgba(15,18,55,.55) 40%,rgba(15,18,55,.20) 75%,rgba(15,18,55,0) 100%);z-index:3}
/* 文字前景层 */
.hero-carousel .carousel-overlay{position:absolute;inset:0;z-index:5;display:flex;align-items:center}
.hero-carousel .hero-inner{display:flex;gap:40px;align-items:center;width:100%}
.hero-carousel .hero-copy{flex:1;min-width:0;position:relative;color:#fff}
.hero-carousel .slide-text{display:none;color:#fff}
.hero-carousel .slide-text.active{display:block;animation:slideTextIn .6s ease both}
@keyframes slideTextIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.hero-carousel .hero-badge{display:inline-block;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.32);padding:6px 14px;border-radius:999px;font-size:13px;margin-bottom:18px;backdrop-filter:blur(4px)}
.hero-carousel h1{margin:0 0 16px;font-size:42px;line-height:1.22;font-weight:800;letter-spacing:.5px;text-shadow:0 4px 18px rgba(0,0,0,.35);color:#fff}
.hero-carousel .hero-sub{margin:0 0 26px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.92);max-width:600px;text-shadow:0 2px 10px rgba(0,0,0,.28)}
.hero-carousel .hero-sub b{color:#ffd27a}
.hero-carousel .hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-carousel .hero-actions .btn{box-shadow:0 8px 22px rgba(0,0,0,.25)}
.hero-carousel .hero-trust{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px;font-size:13px;color:rgba(255,255,255,.9)}
.hero-carousel .hero-trust span{background:rgba(255,255,255,.12);padding:5px 12px;border-radius:8px;backdrop-filter:blur(4px)}
.hero-carousel .hero-card{position:relative;z-index:6}
/* 箭头 / 圆点 */
.hero-carousel .carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:7;width:46px;height:46px;border:none;border-radius:50%;background:rgba(0,0,0,.32);color:#fff;font-size:28px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}
.hero-carousel .carousel-arrow:hover{background:rgba(0,0,0,.6)}
.hero-carousel .carousel-arrow.prev{left:18px}.hero-carousel .carousel-arrow.next{right:18px}
.hero-carousel .carousel-dots{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);z-index:7;display:flex;gap:8px}
.hero-carousel .carousel-dots button{width:10px;height:10px;border-radius:50%;border:none;background:rgba(255,255,255,.55);cursor:pointer;padding:0;transition:.2s}
.hero-carousel .carousel-dots button.on{background:#fff;width:26px;border-radius:6px}

/* 保留原始 .hero 样式（供 page-hero / 其他页面复用，不影响首屏） */
.hero{position:relative;overflow:hidden;background:linear-gradient(120deg,#2a2f6e 0%,#4b53c9 55%,#7b5bef 100%);color:#fff;padding:56px 0 64px}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(600px 300px at 85% -10%,rgba(255,106,0,.45),transparent 60%),
  radial-gradient(500px 260px at 0% 120%,rgba(123,91,239,.5),transparent 60%);pointer-events:none}
.hero-inner{position:relative;display:flex;gap:40px;align-items:center}
.hero-copy{flex:1;min-width:0}
.hero-badge{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);padding:5px 12px;border-radius:999px;font-size:13px;margin-bottom:16px}
.hero h1{margin:0 0 16px;font-size:40px;line-height:1.25;font-weight:800;letter-spacing:.5px}
.hero-sub{margin:0 0 24px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.92)}
.hero-sub b{color:#ffd27a}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-trust{display:flex;gap:18px;flex-wrap:wrap;margin-top:22px;font-size:13px;color:rgba(255,255,255,.85)}
.hero-trust span{background:rgba(255,255,255,.1);padding:4px 10px;border-radius:8px}

/* Hero 侧边推荐卡 */
.hero-card{flex:none;width:330px;background:rgba(255,255,255,.97);color:var(--ink);border-radius:16px;padding:18px;box-shadow:var(--shadow-lg)}
.hero-card-h{font-weight:700;font-size:15px;margin-bottom:12px;color:var(--ink)}
.hero-card-list{list-style:none;margin:0;padding:0}
.hero-card-list li a{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid #f0f0f0}
.hero-card-list .hc-emoji{flex:none;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#ff8a3c,#ff6a00);display:flex;align-items:center;justify-content:center;font-size:20px}
.hero-card-list .hc-info{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.3}
.hero-card-list .hc-info b{font-size:13px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hero-card-list .hc-info i{font-style:normal;font-size:11px;color:var(--muted)}
.hero-card-list .hc-price{flex:none;font-weight:700;color:var(--primary);font-size:14px}
.hero-card-btn{display:block;text-align:center;margin-top:12px;color:var(--primary);font-weight:600;font-size:14px}
.hero-card-list .hero-empty{padding:18px 0;color:var(--muted);font-size:13px;text-align:center;border:none}

/* ===== 访问统计页：柱状图（PV/UV 趋势 + 24h 分布） ===== */
.stat-chart{display:flex;align-items:flex-end;gap:6px;height:180px;padding:14px 6px 26px;border-top:1px dashed var(--border)}
.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;position:relative;min-width:0;height:100%}
.bar-pv{width:78%;max-width:34px;background:linear-gradient(180deg,#4b53c9,#2a2f6e);border-radius:6px 6px 0 0;min-height:2px;position:relative;transition:height .4s ease}
.bar-pv span{position:absolute;top:-18px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--muted);white-space:nowrap}
.bar-uv{position:absolute;left:11%;bottom:0;width:78%;max-width:34px;background:linear-gradient(180deg,#ff9a3c,#ff6a00);border-radius:6px 6px 0 0;min-height:2px;opacity:.85;height:0;transition:height .4s ease}
.bar-col .bar-lbl{position:absolute;bottom:-22px;left:0;right:0;text-align:center;font-size:11px;color:var(--muted)}
.hour-col{flex:1 1 0;min-width:14px}
.hour-col .bar-pv{width:80%;max-width:22px}
.hour-col .bar-lbl{font-size:9px}

/* 数据统计条 */
.stat-strip{background:#fff;border-bottom:1px solid var(--border)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:22px 16px}
.stat-item{text-align:center;padding:6px 10px;border-right:1px solid #f0f0f0}
.stat-item:last-child{border-right:none}
.stat-num{display:block;font-size:30px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-lbl{display:block;color:var(--muted);font-size:13px;margin-top:4px}

/* 区块通用 */
.section{padding:46px 0}
/* 首页首个内容区块（公告/统计条之后）：收紧顶部内距，避免与上方间距过大 */
.sec-first{padding-top:14px}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:24px;gap:16px}
.section-head.center{justify-content:center;text-align:center}
.section-title{margin:0;font-size:24px;font-weight:800;color:var(--ink)}
.section-sub{margin:6px 0 0;color:var(--muted);font-size:14px}
.section-link{color:var(--primary);font-weight:600;white-space:nowrap}
.section-link:hover{text-decoration:underline}

/* 课程卡片 */
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px}
.course-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);transition:.2s;color:var(--text)}
.course-card:hover{text-decoration:none;transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#ffd9b8}
.course-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#eee}
.course-cover-img{width:100%;height:100%;object-fit:cover;display:block}
.course-cover-ph{display:flex;align-items:center;justify-content:center}
.course-cover-ph .ph-emoji{font-size:46px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.2))}
.badges{position:absolute;left:8px;top:8px;display:flex;gap:6px;flex-wrap:wrap}
.badge{font-size:11px;padding:3px 8px;border-radius:999px;font-weight:600;color:#fff;backdrop-filter:blur(2px)}
.badge.hot{background:linear-gradient(135deg,#ff5e3a,#ff2d55)}
.badge.off{background:linear-gradient(135deg,#ff9a00,#ff6a00)}
.badge.free{background:linear-gradient(135deg,#1faa59,#16a34a)}
.course-body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.course-title{font-size:15px;font-weight:700;color:var(--ink);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:42px}
.course-meta{font-size:12px;color:var(--muted)}
.course-sub{font-size:12px;color:#666;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.course-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;padding-top:6px}
.course-stats{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}
.price{font-size:15px;color:var(--primary);font-weight:800}
.price s{color:var(--muted);font-weight:400;font-size:12px;margin-left:4px}
.price.free{color:var(--ok)}

/* 星级 */
.stars{display:inline-flex;align-items:center;gap:1px;color:#ffb400;font-size:13px;line-height:1}
.stars .star{color:#e2e2e2;font-style:normal}
.stars .star.on{color:#ffb400}
.stars-num{margin-left:4px;color:#ff8a00;font-size:12px;font-weight:700}

/* 学科选课 */
.subject-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.subject-card{display:flex;flex-direction:column;align-items:center;gap:6px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px 10px;text-align:center;box-shadow:var(--shadow);transition:.2s;color:var(--ink)}
.subject-card:hover{text-decoration:none;transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#ffd9b8}
.subject-emoji{font-size:30px}
.subject-name{font-weight:700;font-size:15px}
.subject-go{font-size:12px;color:var(--primary)}

/* 平台优势 — 固定 3 列，对称排版（6 个特性 = 3+3） */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px;box-shadow:var(--shadow);transition:.2s}
.feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
/* 背题模式列表 */
.memo-list{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.memo-q{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow)}
.memo-q-h{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px dashed #f2f3f7}
.memo-no{font-weight:800;color:#1d2340;font-size:14px}
.memo-q .memo-toggle{margin-left:auto;padding:4px 12px;font-size:12px}
.memo-stem{font-size:14px;line-height:1.7;color:#1d2340;margin-bottom:10px;white-space:pre-wrap}
.memo-opts{list-style:none;padding:0;margin:0 0 10px;display:flex;flex-direction:column;gap:6px}
.memo-opts li{padding:8px 12px;border-radius:8px;background:#fafbfd;color:#3a3f52;font-size:13.5px;line-height:1.6}
.memo-opts li b{color:#ff6a00;margin-right:6px;font-weight:800}
.memo-opts li.is-answer{background:linear-gradient(135deg,#f0fbf4,#e7f7ee);border:1px solid #1faa59;color:#1d2340;font-weight:600}
.memo-opts li.is-answer b{color:#1faa59}
.memo-answer{margin:8px 0 6px;padding:8px 12px;border-radius:8px;background:#fff4ea;border-left:3px solid #ff6a00;font-size:13.5px;color:#1d2340}
.memo-answer .memo-ans{color:#ff6a00;font-weight:800;margin-left:4px}
.memo-analysis{margin-top:6px;padding:10px 12px;border-radius:8px;background:#f5f8fc;color:#3a3f52;font-size:13px;line-height:1.75;border-left:3px solid #4b6fc9}
.memo-analysis b{color:#2563eb;margin-right:4px}
.feature-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#fff1e3,#ffe0c2);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:12px}
.feature h3{margin:0 0 8px;font-size:16px;color:var(--ink)}
.feature p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}

/* 会员套餐 — 固定 3 列，对称排版（3 个套餐 = 一行 3） */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:960px;margin:0 auto}
.plan{position:relative;background:#fff;border:1px solid var(--border);border-radius:16px;padding:26px 22px;text-align:center;box-shadow:var(--shadow)}
.plan.pop{border-color:var(--primary);box-shadow:0 12px 34px rgba(255,106,0,.18)}
.plan-flag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;white-space:nowrap}
.plan-name{font-size:18px;font-weight:700;color:var(--ink)}
.plan-price{margin:14px 0 6px}
.plan-price b{font-size:38px;font-weight:800;color:var(--primary)}
.plan-price s{color:var(--muted);margin-left:8px;font-size:15px}
.plan-unit{color:var(--muted);font-size:14px;margin-left:4px}
.plan-desc{min-height:40px;color:var(--muted);font-size:13px;margin-bottom:16px}

/* 口碑 */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.testi{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px;box-shadow:var(--shadow)}
.testi p{margin:0 0 14px;color:#444;font-size:14px;line-height:1.8}
.testi-u{display:flex;flex-direction:column}
.testi-u b{color:var(--ink);font-size:14px}
.testi-u span{color:var(--muted);font-size:12px}

/* 考试列表：搜索 + 分类筛选 */
.exam-filter{padding:18px 20px}
.exam-filter-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.exam-search{position:relative;flex:1;min-width:240px;display:flex;align-items:center}
.exam-search-ico{position:absolute;left:12px;color:var(--muted);pointer-events:none}
.exam-search input{width:100%;padding:10px 36px 10px 36px;border:1px solid var(--border);border-radius:8px;background:#fff;font-size:14px;outline:none;transition:.15s}
.exam-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,106,0,.12)}
.exam-search-clear{position:absolute;right:10px;color:var(--muted);text-decoration:none;font-size:14px;line-height:1;padding:4px}
.exam-search-clear:hover{color:var(--ink)}
.exam-cats{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.exam-cat{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--ink);font-size:13px;text-decoration:none;transition:.15s}
.exam-cat:hover{border-color:var(--primary);color:var(--primary)}
.exam-cat.on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.exam-cat em{font-style:normal;font-size:11px;padding:1px 7px;border-radius:999px;background:#f1f3f6;color:var(--muted);min-width:20px;text-align:center}
.exam-cat.on em{background:rgba(255,255,255,.22);color:#fff}
.exam-cat-path{display:inline-flex;align-items:center;padding:3px 12px;border-radius:999px;background:rgba(255,106,0,.1);color:#ff6a00;font-size:13px;font-weight:600;border:1px solid rgba(255,106,0,.18)}
@media (max-width:600px){
  .exam-cats{gap:6px}
  .exam-cat{padding:6px 10px;font-size:12px}
}

/* 底部 CTA —— 撑满整个屏幕宽度，背景延伸到视口边缘 */
.cta-band{background:linear-gradient(120deg,#1f2557,#4b53c9);color:#fff;padding:64px 0;position:relative}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 50%,rgba(255,255,255,.06),transparent 60%);pointer-events:none}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;position:relative}
.cta-text h2{margin:0 0 10px;font-size:30px;font-weight:800;letter-spacing:.5px}
.cta-text p{margin:0;color:rgba(255,255,255,.9);font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 全屏 footer —— 与 cta-band 一致铺满整个屏幕宽度 */
.site-footer{width:100%;background:#14193f;color:#cfd3ef;margin-top:0}
.site-footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:50px 16px 30px}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 14px;font-weight:700;position:relative;padding-bottom:8px}
.site-footer h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--primary),#ff9a3c)}
.site-footer p{margin:6px 0;font-size:13px;color:#aab1d8;line-height:1.85}
.site-footer a{color:#cfd3ef}
.site-footer a:hover{color:#fff;text-decoration:none}
.site-footer-col{font-size:13px}
.site-footer-bottom{border-top:1px solid rgba(255,255,255,.07);padding:18px 0;background:#0e1233;color:#7d84b3;font-size:12.5px}
.site-footer-bottom .dot{margin:0 8px;color:#54609a}
@media (max-width:960px){
  .site-footer-inner{grid-template-columns:1fr 1fr;gap:24px;padding:38px 16px 22px}
}
@media (max-width:600px){
  .site-footer-inner{grid-template-columns:1fr;gap:18px;padding:32px 16px 18px}
  .cta-band{padding:46px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-text h2{font-size:24px}
}

/* 站点 Logo 渲染（带与不带图片两种） */
.logo-img{height:36px;max-width:200px;display:block}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#ff9a3c);color:#fff;font-weight:800;font-size:18px;box-shadow:0 4px 12px rgba(255,106,0,.32)}
.logo-text{font-weight:800;font-size:21px;color:var(--ink);display:inline-flex;flex-direction:column;line-height:1.15}
.logo-text small{color:var(--muted);font-weight:400;font-size:12px;margin-top:1px}

/* 课程中心页 */
.page-hero{background:linear-gradient(120deg,#2a2f6e,#4b53c9);color:#fff;padding:34px 0}
.page-hero h1{margin:0 0 6px;font-size:28px}
.page-hero p{margin:0;color:rgba(255,255,255,.9);font-size:14px}
.course-layout{display:grid;grid-template-columns:240px 1fr;gap:24px;padding-top:24px;padding-bottom:30px}
.course-side{display:flex;flex-direction:column;gap:16px}
.side-box{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px;box-shadow:var(--shadow)}
.side-title{font-weight:700;color:var(--ink);margin-bottom:10px;font-size:15px}
.side-link{display:block;padding:8px 12px;border-radius:8px;color:#555;font-size:14px;margin-bottom:2px}
.side-link:hover{text-decoration:none;background:#fff3e8;color:var(--primary)}
.side-link.active{background:var(--primary);color:#fff}
.side-tip{background:linear-gradient(135deg,#fff8f0,#fff1e3)}
.side-tip-h{font-weight:700;color:var(--primary-d);margin-bottom:6px}
.side-tip p{margin:0;font-size:12px;color:#777;line-height:1.7}
.course-main{min-width:0}
.filter-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);color:#555;font-size:13px;transition:.15s}
.chip:hover{text-decoration:none;border-color:var(--primary);color:var(--primary)}
.chip.on{background:var(--primary);border-color:var(--primary);color:#fff}
.result-count{color:var(--muted);font-size:13px;white-space:nowrap}

/* 课程详情 */
.course-detail{padding:24px 0 40px}
.cd-hero{display:grid;grid-template-columns:380px 1fr;gap:28px;align-items:stretch}
.cd-cover{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow);height:100%;min-height:240px}
.cd-cover .course-cover-img{width:100%;height:100%;display:block;border-radius:16px;object-fit:cover}
.cd-cover .course-cover-ph{display:flex;align-items:center;justify-content:center}
.cd-target{position:absolute;left:12px;top:12px;background:rgba(0,0,0,.5);color:#fff;font-size:12px;padding:4px 10px;border-radius:999px}
.cd-crumb{color:var(--muted);font-size:13px;margin-bottom:8px}
.cd-title{margin:0 0 12px;font-size:26px;color:var(--ink);line-height:1.35}
.cd-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;color:#555;font-size:13px;margin-bottom:14px}
.cd-summary{color:#555;font-size:14px;line-height:1.8;margin:0 0 18px}
.cd-buy{display:flex;align-items:center;gap:18px;flex-wrap:wrap;background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 20px;box-shadow:var(--shadow)}
.cd-price b{font-size:30px;color:var(--primary);font-weight:800}
.cd-price b.free{color:var(--ok);font-size:26px}
.cd-price s{color:var(--muted);margin-left:8px;font-size:15px}
/* 课程详情：会员免费观看 + 购课折扣提示 */
.cd-member-free{width:100%;font-size:13px;color:#7a4b00;background:#fff7e6;border:1px solid #ffe0a3;border-radius:10px;padding:8px 12px;margin-top:2px}
.cd-member-discount{width:100%;font-size:12.5px;color:var(--muted);margin-top:4px;line-height:2.1}
.cd-member-discount .muted{margin-right:2px}
.cd-dz{display:inline-block;background:#f3f6ff;border:1px solid #d8e2ff;color:#2b59d6;border-radius:999px;padding:3px 12px;font-size:12px;margin-left:16px;vertical-align:middle}
.cd-dz:first-of-type{margin-left:10px}
.m-cd-member-note{font-size:12.5px;color:#7a4b00;background:#fff7e6;border:1px solid #ffe0a3;border-radius:10px;padding:8px 12px;margin:8px 12px 0}
.m-cd-member-note.muted{color:var(--muted);background:#f6f7f9;border-color:var(--border)}
.m-cd-member-note .cd-dz{background:#f3f6ff;border-color:#d8e2ff;color:#2b59d6}
.cd-progress{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 20px;margin-top:20px;box-shadow:var(--shadow)}
.cd-progress-h{display:flex;justify-content:space-between;font-size:13px;color:#555;margin-bottom:8px}
.cd-bar{height:10px;background:#eee;border-radius:6px;overflow:hidden}
.cd-bar-fill{height:100%;background:linear-gradient(90deg,#ff9a3c,#ff6a00);border-radius:6px;transition:width .3s}
.cd-chapters{margin-top:22px}
.cd-ch-title{font-size:18px;color:var(--ink);margin:0 0 14px}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:960px){
  .hero h1{font-size:32px}
  .stat-num{font-size:26px}
  .course-layout{grid-template-columns:1fr}
  .course-side{flex-direction:row;flex-wrap:wrap}
  .side-box{flex:1;min-width:200px}
  .cd-hero{grid-template-columns:1fr}
  .cd-cover{max-width:420px}
}
@media (max-width:820px){
  .nav-toggle{display:flex}
  .nav-collapse{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 16px;border-bottom:1px solid var(--border);box-shadow:0 10px 24px rgba(0,0,0,.1)}
  .nav-collapse.show{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-links a.link{display:block;padding:12px 4px;border-bottom:1px solid #f0f0f0;font-size:15px}
  .nav .spacer{display:none}
  .nav .user{flex-direction:column;align-items:stretch;gap:8px;width:100%;padding-top:8px}
  .hero-inner{flex-direction:column;align-items:stretch;gap:24px}
  .hero-card{width:100%}
  .cta-inner{flex-direction:column;align-items:flex-start}
  /* 移动端导航：汉堡菜单展开为下拉面板 */
  .hero-carousel{height:auto;min-height:520px;padding:54px 0 30px}
  .hero-carousel .carousel-overlay{position:static}
  .hero-carousel .hero-inner{flex-direction:column}
  .hero-carousel h1{font-size:30px}
  .hero-carousel .hero-sub{font-size:15px;margin-bottom:18px}
  .hero-carousel .hero-actions .btn{padding:11px 20px}
  .hero-carousel .carousel-arrow{width:38px;height:38px;font-size:22px}
  .hero-carousel .carousel-arrow.prev{left:10px}.hero-carousel .carousel-arrow.next{right:10px}
  .hero-carousel .carousel-dots{bottom:14px}
}
@media (max-width:600px){
  .grid,.grid-2,.grid-3,.grid-4,.feature-grid,.plan-grid,.testi-grid{grid-template-columns:1fr}
  .hero{padding:40px 0 48px}
  .hero h1{font-size:27px}
  .section{padding:34px 0}
  .section-title{font-size:21px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:14px 0}
  .stat-item:nth-child(2){border-right:none}
  .container{padding-left:12px;padding-right:12px}
  .banner{padding:22px 18px}
  .hero-carousel{min-height:480px;padding:42px 0 24px}
  .hero-carousel h1{font-size:24px;margin-bottom:12px}
  .hero-carousel .hero-sub{font-size:13px;margin-bottom:14px}
  .hero-carousel .hero-badge{font-size:12px;padding:5px 10px;margin-bottom:14px}
  .hero-carousel .hero-card-h{font-size:14px}
  .hero-carousel .carousel-arrow{display:none}
  table{display:block;overflow-x:auto;white-space:nowrap}
  .chat-fab{width:48px;height:48px;font-size:20px;right:14px;bottom:14px}
  .chat-box{left:12px;right:12px}
  .cd-buy{padding:14px}
  .course-layout{padding-top:16px}
}
/* 全局移动端表格横向滚动（覆盖旧规则） */
@media (max-width:600px){
  .adm-content{padding:14px}
  .adm-side{width:56px}
  .adm-logo{font-size:0;padding:16px 0;text-align:center}
  .adm-logo::after{content:"潇";font-size:18px;font-weight:800}
  .adm-menu a{justify-content:center;font-size:0;padding:11px}
  .adm-menu a span{font-size:17px}
  .adm-top{padding:10px 14px}
}

/* =========================================================
   移动端体验优化（触屏友好 · 精致排版 · 覆盖旧规则）
   ========================================================= */
html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}

/* --- 导航下拉面板：圆角 + 平滑展开（≤820px） --- */
@media (max-width:820px){
  .nav .inner{height:56px;gap:12px}
  .logo{font-size:18px}
  .logo small{font-size:11px}
  .nav-toggle{width:40px;height:40px;border-radius:10px;font-size:19px}
  .nav-collapse{top:56px;padding:8px 16px 16px;border-radius:0 0 18px 18px;animation:navDrop .22s ease}
  @keyframes navDrop{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}
  .nav-links a.link{padding:13px 4px;font-size:15px}
  .nav .user{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .nav .user .btn{width:100%;justify-content:center;min-height:40px}
  .nav .user .link,.nav .user .muted{grid-column:1/-1}
}

/* --- 小屏基础：字号 / 卡片 / 触控目标（≤600px） --- */
@media (max-width:600px){
  .container{padding-left:14px;padding-right:14px}
  .card{padding:16px;border-radius:12px;margin-bottom:14px}
  .title{font-size:17px}
  .banner{padding:22px 16px;border-radius:12px}
  .banner h1{font-size:22px}
  .btn{min-height:42px;padding:10px 16px;border-radius:11px}
  .btn-sm{min-height:36px;padding:7px 12px;font-size:13px}
  .btn-lg{min-height:48px;padding:12px 20px;font-size:15px}
  .tag{font-size:11px;padding:2px 7px}
  .pager a,.pager span,.pager .ellipsis{padding:8px 13px;font-size:13.5px}
  .pager .prev,.pager .next{padding:8px 14px}
  .pager .pager-total{width:100%;text-align:center;margin:6px 0 0}
  .opt{padding:11px 12px;font-size:14px}
  .q-item{padding:14px;border-radius:12px}
  .q-sub{padding-left:12px}
  .alert{padding:11px 14px}
  /* 输入框：16px 防 iOS 自动缩放 */
  input,select,textarea{font-size:16px}
}

/* --- 首页 Hero：紧凑 + 卡片质感（≤600px） --- */
@media (max-width:600px){
  .hero-carousel{min-height:auto;padding:34px 0 20px}
  .hero-carousel h1{font-size:23px;line-height:1.4}
  .hero-carousel .hero-sub{font-size:13px;margin-bottom:14px}
  .hero-carousel .hero-badge{font-size:11px;padding:4px 10px;margin-bottom:12px}
  .hero-carousel .hero-actions{display:flex;flex-wrap:wrap;gap:10px}
  .hero-carousel .hero-actions .btn{flex:1;min-width:130px;padding:12px 14px}
  .hero-carousel .hero-trust{gap:8px;margin-top:16px}
  .hero-carousel .hero-trust span{padding:4px 10px;font-size:12px}
  .hero-carousel .hero-card{margin-top:4px;border:1px solid rgba(255,255,255,.6)}
  .hero-card-list li a{padding:10px 0}
}

/* --- 数据统计：2×2 软卡片（≤600px） --- */
@media (max-width:600px){
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;padding:16px 8px}
  .stat-item{border:none;background:#fff;border-radius:12px;padding:14px 8px;box-shadow:0 2px 10px rgba(29,35,64,.05)}
  .stat-item:nth-child(2){border-right:none}
  .stat-num{font-size:24px}
}

/* --- 版块标题（≤600px） --- */
@media (max-width:600px){
  .section{padding:30px 0}
  .section-title{font-size:20px}
  .section-sub{font-size:13px}
  .section-head{flex-wrap:wrap;gap:8px}
}

/* --- 课程 / 学科宫格：双列 / 三列紧凑（≤600px） --- */
@media (max-width:600px){
  .course-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .course-card{border-radius:12px}
  .course-title{font-size:14px;min-height:40px}
  .subject-grid{grid-template-columns:repeat(3,1fr);gap:10px}
  .subject-card{padding:14px 6px;border-radius:12px}
  .subject-emoji{font-size:26px}
  .subject-name{font-size:14px}
}

/* --- 特性卡：图标左文右横排（≤600px） --- */
@media (max-width:600px){
  .feature{display:flex;gap:14px;align-items:flex-start;padding:16px;border-radius:12px}
  .feature-ico{flex:none;margin-bottom:0}
  .feature h3{margin:2px 0 6px;font-size:15px}
}

/* --- 套餐 / 口碑：内边距优化（≤600px） --- */
@media (max-width:600px){
  .plan{padding:20px 16px}
  .plan-price b{font-size:32px}
  .testi{padding:16px;border-radius:12px}
}

/* --- 底部 CTA / 页脚（≤600px） --- */
@media (max-width:600px){
  .cta-band{padding:40px 0}
  .cta-text h2{font-size:21px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .site-footer-inner{padding:28px 14px 16px}
  .site-footer-bottom{font-size:11.5px;line-height:1.8}
}

/* --- 表格：横向滚动（≤600px） --- */
@media (max-width:600px){
  table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap;border-radius:10px}
  th,td{padding:10px 10px;font-size:12.5px}
}

/* --- 底部安全区 / 悬浮按钮 --- */
@media (max-width:600px){
  main{padding-bottom:calc(30px + env(safe-area-inset-bottom))}
  .chat-fab{right:14px;bottom:calc(14px + env(safe-area-inset-bottom))}
  .chat-box{bottom:calc(84px + env(safe-area-inset-bottom))}
}

/* --- 课程详情（≤600px） --- */
@media (max-width:600px){
  .cd-hero{padding:8px 0 0}
  .cd-cover{border-radius:14px}
  .cd-title{font-size:21px}
  .cd-meta{gap:10px 14px}
  .cd-buy{padding:14px;gap:12px}
  .cd-price b{font-size:26px}
  .cd-progress{padding:14px}
}

/* --- 课程页：≤600px 侧栏纵向堆叠（避免被挤窄） --- */
@media (max-width:600px){
  .course-layout{grid-template-columns:1fr;gap:16px;padding-top:18px;padding-bottom:22px}
  .course-side{flex-direction:column;flex-wrap:nowrap}
  .course-side .side-box{flex:none;width:100%;min-width:0}
  .page-hero{padding:26px 0}
  .page-hero h1{font-size:22px}
  .page-hero p{font-size:13px;line-height:1.6}
  .filter-bar{flex-direction:column;align-items:stretch;gap:10px}
  .filter-bar .chips{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .filter-bar .chip{flex:none;white-space:nowrap}
  .result-count{text-align:center}
  .chips-wrap{display:flex;flex-wrap:wrap;gap:8px}
}

/* --- 通用：长标题 / 长串换行 --- */
@media (max-width:600px){
  .hero-carousel h1,.section-title,.cd-title{word-wrap:break-word;overflow-wrap:anywhere;hyphens:auto}
  h1,h2,h3{word-wrap:break-word;overflow-wrap:break-word}
}

/* ================= 考试资讯（前台）新版 ================= */

/* ===== 通用：封面图占位 ===== */
.art-cover{display:block;width:100%;height:100%}
.art-cover img{width:100%;height:100%;object-fit:cover;display:block}
.art-cover-ph{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#fff1e3,#ffe0c2)}
.art-ph-emoji{font-size:34px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.18))}

/* ===== 分类标签 / 置顶标签 ===== */
.news-cat{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:rgba(255,106,0,.1);color:#ff6a00;font-size:12px;font-weight:700;line-height:1.5}
.news-cat-light{background:rgba(255,255,255,.22);color:#fff;border:1px solid rgba(255,255,255,.4)}
.news-top{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;font-size:12px;font-weight:700;line-height:1.5;box-shadow:0 3px 8px rgba(255,106,0,.28)}

/* ================= 列表页：Hero 头部 ================= */
.news-page .news-hero{position:relative;overflow:hidden;padding:54px 0 58px;color:#fff;background:linear-gradient(120deg,#2a2f6e 0%,#4b53c9 45%,#7b5bef 100%)}
.news-hero-bg{position:absolute;inset:0;background:
  radial-gradient(520px 260px at 88% -10%,rgba(255,106,0,.4),transparent 60%),
  radial-gradient(480px 280px at 0% 130%,rgba(123,91,239,.45),transparent 60%);pointer-events:none}
.news-hero-orb{position:absolute;border-radius:50%;filter:blur(40px);opacity:.5;pointer-events:none}
.news-hero-orb-1{width:340px;height:340px;background:#ff6a00;top:-120px;right:-80px}
.news-hero-orb-2{width:300px;height:300px;background:#7b5bef;bottom:-140px;left:-60px}
.news-hero-inner{position:relative;z-index:2;display:flex;gap:40px;align-items:center;justify-content:space-between}
.news-hero-copy{flex:1;min-width:0}
.news-hero-badge{display:inline-block;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.32);padding:6px 14px;border-radius:999px;font-size:13px;margin-bottom:18px;backdrop-filter:blur(4px);font-weight:600}
.news-hero-copy h1{margin:0 0 12px;font-size:38px;line-height:1.25;font-weight:800;letter-spacing:.5px;text-shadow:0 4px 18px rgba(0,0,0,.22)}
.news-hero-sub{margin:0 0 22px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.92);max-width:640px}
.news-hero-sub b{color:#ffd27a;font-weight:800;padding:0 2px}
.news-hero-stats{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nh-stat{display:flex;flex-direction:column;gap:3px;padding:6px 22px 6px 0}
.nh-stat b{font-size:26px;font-weight:800;color:#fff;line-height:1}
.nh-stat span{font-size:12.5px;color:rgba(255,255,255,.85)}
.nh-stat-divider{width:1px;height:34px;background:rgba(255,255,255,.2);margin:0 22px 0 0}
.news-hero-card{flex:none;width:310px;background:rgba(255,255,255,.97);color:var(--ink);border-radius:16px;padding:18px 18px 16px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;gap:12px}
.nh-card-icon{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,#fff1e3,#ffe0c2);display:flex;align-items:center;justify-content:center;font-size:24px}
.nh-card-tip{display:flex;flex-direction:column;gap:2px}
.nh-card-tip b{font-size:15px;color:var(--ink);font-weight:700}
.nh-card-tip span{font-size:12.5px;color:var(--muted);line-height:1.5}
.nh-card-btn{text-decoration:none;text-align:center;padding:10px 0;background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;border-radius:12px;font-size:14px;font-weight:700;transition:.2s;box-shadow:0 4px 12px rgba(255,106,0,.28)}
.nh-card-btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(255,106,0,.36);color:#fff;text-decoration:none}

/* chips 包装条（含结果计数） */
.chips-wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:6px 0 10px}
.chips-wrap .chips{flex:1}
.result-count{font-size:13px;color:var(--muted);white-space:nowrap;flex:none;padding:6px 14px;background:#fff;border-radius:999px;border:1px solid var(--border)}
.result-count b{font-weight:800;font-size:14px}

/* ================= 列表页：精选推荐（左幻灯 + 右榜单） ================= */
.spotlight-block{margin-top:4px}
.spotlight-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:18px;align-items:stretch}

/* ---- 左侧：幻灯片 ---- */
.spotlight-left{min-width:0;display:flex}
.slideshow{position:relative;flex:1 1 auto;min-height:380px;border-radius:18px;overflow:hidden;box-shadow:0 10px 30px rgba(29,35,64,.12);background:linear-gradient(135deg,#4b53c9,#7b5bef);border:1px solid var(--border)}
.slide-item{position:absolute;inset:0;display:flex;flex-direction:column-reverse;color:#fff;text-decoration:none;opacity:0;transform:scale(1.02);transition:opacity .55s ease, transform .65s ease;pointer-events:none}
.slide-item.on{opacity:1;transform:scale(1);pointer-events:auto;z-index:2}
.slide-item:hover{color:#fff;text-decoration:none}
.slide-cover{position:absolute;inset:0}
.slide-cover .art-cover,.slide-cover .art-cover img,.slide-cover-img{width:100%;height:100%;object-fit:cover;display:block}
.slide-cover .art-cover-ph{width:100%;height:100%;background:linear-gradient(135deg,#4b53c9 0%,#7b5bef 55%,#ff6a00 140%)}
.slide-cover .art-cover-ph .art-ph-emoji{font-size:72px;color:#fff;filter:drop-shadow(0 4px 14px rgba(0,0,0,.25))}
.slide-cover-mask{position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(29,35,64,0) 30%,rgba(29,35,64,.82) 100%),
  linear-gradient(90deg,rgba(29,35,64,.35),rgba(29,35,64,0) 45%);pointer-events:none}
.slide-info{position:relative;z-index:3;padding:26px 30px 26px;display:flex;flex-direction:column;gap:8px;max-width:92%}
.slide-badges{display:flex;gap:6px;margin-bottom:2px}
.slide-title{margin:0;font-size:24px;line-height:1.35;font-weight:800;color:#fff;text-shadow:0 4px 16px rgba(0,0,0,.28);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.slide-desc{margin:0;font-size:13.5px;color:rgba(255,255,255,.9);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.slide-foot{display:flex;gap:16px;margin-top:4px;font-size:12.5px;color:rgba(255,255,255,.88)}
.slide-nav{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;
  background:rgba(29,35,64,.45);border:none;color:#fff;font-size:26px;font-weight:700;line-height:1;
  cursor:pointer;transition:.18s;z-index:5;backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;opacity:0}
.slide-prev{left:14px;padding-right:2px}
.slide-next{right:14px;padding-left:2px}
.slideshow:hover .slide-nav{opacity:1}
.slide-nav:hover{background:rgba(255,106,0,.85);transform:translateY(-50%) scale(1.06)}
.slide-dots{position:absolute;left:50%;transform:translateX(-50%);bottom:16px;display:flex;gap:7px;z-index:5}
.slide-dot{width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.45);cursor:pointer;transition:.2s}
.slide-dot.on{width:26px;border-radius:999px;background:#fff;box-shadow:0 0 0 3px rgba(255,106,0,.25)}

/* ---- 右侧：编辑精选榜单 ---- */
.spotlight-right{display:flex;flex-direction:column;min-width:0;background:#fff;border-radius:18px;
  box-shadow:0 6px 22px rgba(29,35,64,.08);border:1px solid var(--border);overflow:hidden}
.spotlight-right-head{display:flex;align-items:baseline;justify-content:space-between;
  padding:16px 20px 12px;background:linear-gradient(135deg,#fff8f0,#fafcff);border-bottom:1px dashed var(--border)}
.spotlight-right-head > span:first-child{font-weight:800;color:var(--ink);font-size:15px;letter-spacing:.3px}
.spotlight-right-head > span:first-child::before{content:'';display:inline-block;width:3px;height:14px;border-radius:3px;
  background:linear-gradient(180deg,#ff6a00,#ff9a3c);margin-right:8px;vertical-align:-2px}
.spotlight-list{list-style:none;margin:0;padding:8px 10px 10px;display:flex;flex-direction:column;gap:2px;flex:1}
.spotlight-list li{list-style:none}
.sp-item{display:flex;gap:12px;padding:10px 10px;border-radius:12px;text-decoration:none;color:inherit;transition:.18s;position:relative}
.sp-item:hover{background:linear-gradient(120deg,#fff8f3,#faf7ff);text-decoration:none;transform:translateX(2px)}
.sp-item:hover .sp-title-row h4{color:var(--primary)}
.sp-rank{flex:none;width:34px;height:34px;border-radius:10px;background:#f0f1f5;color:#8a8fa8;font-size:13px;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin-top:2px;letter-spacing:.5px;transition:.18s}
.sp-rank.top{background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;box-shadow:0 4px 10px rgba(255,106,0,.26)}
.sp-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.sp-title-row{display:flex;align-items:center;gap:8px;min-width:0}
.sp-title-row h4{margin:0;font-size:14.5px;line-height:1.5;color:var(--ink);font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:.15s;flex:1}
.sp-pin{flex:none;background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;font-size:10.5px;
  font-weight:700;padding:2px 7px;border-radius:6px;letter-spacing:.5px}
.sp-desc{margin:0;font-size:12.5px;color:#9599ab;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.sp-foot{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:auto}
.sp-foot span{font-size:11.5px;color:#a5aab8}
.sp-cat{color:var(--primary)!important;font-weight:600}
.sp-foot .sp-views::before{content:'';display:inline-block;width:3px;height:3px;border-radius:50%;
  background:#dfe1ea;margin:0 8px 2px 0;vertical-align:middle}
.sp-foot .sp-date::before{content:'';display:inline-block;width:3px;height:3px;border-radius:50%;
  background:#dfe1ea;margin:0 8px 2px 0;vertical-align:middle}

/* ================= 列表页：资讯网格（普通卡片） ================= */
.news-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start}
.news-main-col{min-width:0}
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.news-card{position:relative;display:flex;flex-direction:column;background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 3px 14px rgba(29,35,64,.06);transition:.22s;color:var(--text);text-decoration:none;border:1px solid var(--border)}
.news-card:hover{transform:translateY(-4px);box-shadow:0 10px 26px rgba(29,35,64,.12);border-color:#ffd9b8;text-decoration:none}
.news-card-cover-wrap{position:relative;overflow:hidden;aspect-ratio:16/9}
.news-card-cover-wrap .news-card-cover,.news-card-cover-wrap .art-cover{width:100%;height:100%;object-fit:cover;display:block;transition:.4s}
.news-card-cover-wrap .art-cover-ph{width:100%;height:100%}
.news-card:hover .news-card-cover-wrap .news-card-cover,.news-card:hover .news-card-cover-wrap .art-cover img{transform:scale(1.06)}
.news-card-cat-badge{position:absolute;left:10px;top:10px;padding:3px 10px;border-radius:999px;background:rgba(0,0,0,.55);color:#fff;font-size:11px;font-weight:700;backdrop-filter:blur(4px);z-index:3}
.news-card-bd{padding:14px 15px 13px;display:flex;flex-direction:column;flex:1;gap:6px}
.news-card h3{margin:0;font-size:15.5px;line-height:1.5;color:var(--ink);font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:46px;transition:.15s}
.news-card:hover h3{color:var(--primary)}
.news-summary{margin:0;font-size:13px;color:var(--muted);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:8px;font-size:12px;gap:8px;border-top:1px dashed #f0f1f5}
.news-card-foot .muted{color:#9aa0b5}

/* ================= 列表页：右侧栏 ================= */
.news-side{min-width:0}
.news-side .card{margin-bottom:16px}
.side-card{padding:18px 16px;border-radius:14px}
.side-card-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px;padding-bottom:10px;border-bottom:1px dashed var(--border)}
.side-card-title{font-size:15px;font-weight:800;color:var(--ink)}
.side-card-sub{font-size:11.5px;color:var(--muted)}

/* 热门列表 新版 */
.side-hot-list{display:flex;flex-direction:column;gap:2px}
.side-hot-item{display:flex;align-items:flex-start;gap:10px;padding:10px 8px;border-radius:10px;transition:.15s;text-decoration:none;color:inherit}
.side-hot-item:hover{background:#fff8f3;text-decoration:none}
.side-hot-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.side-hot-title{font-size:13.5px;color:var(--text);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-weight:500}
.side-hot-item:hover .side-hot-title{color:var(--primary)}
.side-hot-views{font-size:11.5px;color:#a5aab8}
.news-hot-rank{flex:none;width:22px;height:22px;border-radius:7px;background:#f0f1f5;color:#888;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:1px}
.news-hot-rank.top{background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;box-shadow:0 3px 8px rgba(255,106,0,.25)}

/* 分类导航 新版 */
.side-cat-list{display:flex;flex-direction:column;gap:2px}
.side-cat-item{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;border-radius:10px;text-decoration:none;transition:.15s;color:var(--text)}
.side-cat-item:hover{background:#fff8f3;text-decoration:none}
.side-cat-item.on{background:linear-gradient(90deg,rgba(255,106,0,.12),rgba(255,106,0,.02));color:var(--primary);font-weight:600}
.side-cat-name{font-size:13.5px}
.side-cat-count{font-size:11.5px;color:#a5aab8;background:#f7f8fb;padding:2px 8px;border-radius:999px}
.side-cat-item.on .side-cat-count{background:rgba(255,106,0,.18);color:var(--primary)}

/* 侧栏：小提示卡（带渐变） */
.side-tip-card{background:linear-gradient(135deg,#fff8f0,#fff);border:1px solid #ffe2c2;overflow:hidden}
.side-tip-inner{display:flex;flex-direction:column;gap:11px;align-items:flex-start}
.side-tip-icon{width:44px;height:44px;border-radius:13px;background:linear-gradient(135deg,#fff1e3,#ffd8b0);display:flex;align-items:center;justify-content:center;font-size:22px}
.side-tip-text{display:flex;flex-direction:column;gap:3px}
.side-tip-text b{font-size:14px;color:var(--ink);font-weight:700}
.side-tip-text span{font-size:12px;color:var(--muted);line-height:1.5}
.side-tip-btn{text-decoration:none;width:100%;text-align:center;padding:10px 0;background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;border-radius:11px;font-size:13.5px;font-weight:700;transition:.2s;box-shadow:0 4px 12px rgba(255,106,0,.22)}
.side-tip-btn:hover{transform:translateY(-1px);color:#fff;text-decoration:none;box-shadow:0 6px 16px rgba(255,106,0,.32)}

/* 侧栏：作者信息卡（详情页） */
.side-author{background:linear-gradient(160deg,#fafcff,#fff);border:1px solid #e6eaff}
.side-author-inner{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.side-author-avatar{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,#4b53c9,#7b5bef);display:flex;align-items:center;justify-content:center;font-size:24px;flex:none;box-shadow:0 4px 12px rgba(75,83,201,.22)}
.side-author-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.side-author-info b{font-size:15px;color:var(--ink);font-weight:800}
.side-author-info span{font-size:11.5px;color:var(--muted);line-height:1.4}
.side-author-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding-top:12px;border-top:1px dashed var(--border)}
.side-author-stats > div{display:flex;flex-direction:column;gap:3px;align-items:center;text-align:center;padding:6px 4px;border-radius:9px;background:#fafbfe}
.side-author-stats b{font-size:17px;font-weight:800;color:var(--primary);line-height:1}
.side-author-stats span{font-size:10.5px;color:var(--muted)}

/* 侧栏：快速分类四宫格 */
.side-quick-cats{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.side-quick-cats a{display:flex;flex-direction:column;align-items:center;gap:5px;padding:13px 6px;background:#fafbfd;border-radius:11px;text-decoration:none;color:var(--ink);font-size:12.5px;font-weight:600;transition:.18s;border:1px solid transparent}
.side-quick-cats a:hover{background:linear-gradient(135deg,#fff7ef,#fff);border-color:#ffd9b8;color:var(--primary);transform:translateY(-1px)}
.side-quick-cats a span{font-size:20px}

/* ================= 详情页：新版 ================= */
.news-detail-page{padding-top:18px}
.detail-top{margin-bottom:10px}
.detail-breadcrumb{display:flex;align-items:center;gap:7px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding:10px 4px}
.detail-breadcrumb a{color:var(--muted);text-decoration:none;transition:.15s}
.detail-breadcrumb a:hover{color:var(--primary)}
.detail-breadcrumb i{font-style:normal;color:#c3c7d2;font-weight:700}
.crumb-current{color:var(--ink);font-weight:600}

.news-detail{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start;padding-top:4px;padding-bottom:30px}
.news-detail-main{min-width:0}
.detail-card{padding:0;overflow:hidden;border-radius:16px}
.detail-header{padding:32px 40px 22px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,#fbfcff,#ffffff)}
.detail-meta-row{display:flex;align-items:center;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.detail-title{margin:0 0 12px;font-size:30px;line-height:1.4;color:var(--ink);font-weight:800;letter-spacing:.2px}
.detail-summary{margin:0 0 18px;padding:13px 16px;background:linear-gradient(135deg,#fff8f0,#fffbf6);border:1px solid #ffe2c2;border-left:4px solid var(--primary);border-radius:10px;font-size:14px;line-height:1.75;color:#7a5a3a}
.detail-info-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:12px;border-top:1px dashed var(--border)}
.detail-info-left{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.detail-info-item{display:inline-flex;align-items:center;gap:4px}
.detail-avatar{width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,#fff1e3,#ffd8b0);display:inline-flex;align-items:center;justify-content:center;font-size:13px;margin-right:2px}
.detail-info-right{display:flex;align-items:center;gap:6px}
.share-icon{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:#f5f6fa;cursor:pointer;transition:.18s;font-size:13px}
.share-icon:hover{background:var(--primary);color:#fff;transform:translateY(-1px)}

.detail-cover-wrap{margin:22px 40px 4px;padding:0}
.detail-cover-wrap .news-detail-cover{width:100%;border-radius:14px;max-height:460px;object-fit:cover;display:block;box-shadow:0 8px 22px rgba(29,35,64,.1)}
.detail-cover-cap{margin-top:8px;text-align:center;font-size:12.5px;color:var(--muted);font-style:italic}

.news-detail-body{padding:20px 40px 10px;line-height:2;font-size:16px;color:#3a3f52;word-break:break-word}
.news-detail-body p{margin:0 0 18px}
.news-detail-body h2{font-size:22px;color:var(--ink);margin:28px 0 14px;font-weight:800;padding-bottom:8px;border-bottom:2px solid #ffe0c2;display:inline-block;padding-right:16px}
.news-detail-body h3{font-size:18px;color:var(--ink);margin:22px 0 10px;font-weight:700;padding-left:12px;border-left:4px solid var(--primary)}
.news-detail-body h4{font-size:16px;color:var(--ink);margin:18px 0 8px;font-weight:700}
.news-detail-body ul,.news-detail-body ol{padding-left:24px;margin:0 0 18px}
.news-detail-body ul li,.news-detail-body ol li{margin-bottom:6px;line-height:1.8}
.news-detail-body img{max-width:100%;border-radius:12px;margin:10px 0 14px;box-shadow:0 4px 16px rgba(29,35,64,.08)}
.news-detail-body blockquote{margin:0 0 18px;padding:14px 18px;border-left:4px solid var(--primary);background:linear-gradient(135deg,#fff8f0,#fffbf6);border-radius:0 12px 12px 0;color:#7a5a3a;font-size:15px;line-height:1.85}
.news-detail-body a{color:var(--primary);text-decoration:none;border-bottom:1px dashed rgba(255,106,0,.4)}
.news-detail-body a:hover{border-bottom-color:var(--primary)}
.news-detail-body code{background:#f5f6fa;padding:2px 8px;border-radius:6px;font-size:13.5px;color:#c2560f;font-family:Consolas,Monaco,monospace}
.news-detail-body pre{background:#1f2557;color:#e4e7ff;padding:16px 18px;border-radius:12px;overflow-x:auto;margin:0 0 18px;font-size:13.5px;line-height:1.7}
.news-detail-body pre code{background:transparent;color:inherit;padding:0}
.news-detail-body table{border:1px solid var(--border);border-radius:10px;overflow:hidden;margin:0 0 18px;box-shadow:0 2px 8px rgba(29,35,64,.04)}
.news-detail-body th{background:linear-gradient(180deg,#fafbfe,#f3f5fb);color:var(--ink);font-weight:700}
.news-detail-body hr{border:none;border-top:1px dashed var(--border);margin:22px 0}
.news-detail-body strong{color:var(--ink);font-weight:700}

.detail-footer{padding:18px 40px 32px;margin-top:10px;border-top:1px solid var(--border);background:linear-gradient(180deg,#ffffff,#fbfcff)}
.detail-tags-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.detail-tag-label{font-size:13px;color:var(--muted);font-weight:600}
.detail-tag{display:inline-flex;padding:4px 12px;border-radius:999px;background:#fff4ea;color:var(--primary);font-size:12.5px;font-weight:600;text-decoration:none;transition:.15s;border:1px solid #ffe0c2}
.detail-tag:hover{background:var(--primary);color:#fff;text-decoration:none;border-color:var(--primary)}

.detail-nav{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:stretch}
.detail-nav-item{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border-radius:12px;background:#f7f8fb;border:1px solid var(--border);text-decoration:none;color:var(--text);transition:.2s;min-height:64px;justify-content:center}
.detail-nav-item:hover{border-color:var(--primary);color:var(--primary);background:#fff8f3;text-decoration:none;transform:translateY(-1px)}
.detail-nav-item.disabled{opacity:.55;cursor:not-allowed}
.detail-nav-item.disabled:hover{transform:none;border-color:var(--border);color:var(--text);background:#f7f8fb}
.detail-nav-prev{align-items:flex-start}
.detail-nav-next{align-items:flex-end;text-align:right}
.detail-nav-item .nav-dir{font-size:12px;color:var(--muted);font-weight:700}
.detail-nav-item:hover .nav-dir{color:var(--primary)}
.detail-nav-item .nav-title{font-size:14px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;max-width:100%}
.detail-nav-center{display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:12px;background:linear-gradient(135deg,#ff6a00,#ff9a3c);color:#fff;font-size:13.5px;font-weight:700;text-decoration:none;transition:.2s;box-shadow:0 4px 12px rgba(255,106,0,.25)}
.detail-nav-center:hover{color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 6px 16px rgba(255,106,0,.35)}

@media (max-width:1080px){
  .spotlight-grid{grid-template-columns:1fr}
  .slideshow{height:340px}
  .slide-info{padding:22px 22px}
  .slide-title{font-size:20px}
}
@media (max-width:960px){
  .news-layout,.news-detail{grid-template-columns:1fr}
  .news-side{display:none}
  .news-hero-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .news-hero-card{width:100%}
  .news-hero-copy h1{font-size:30px}
  .slideshow{height:300px}
  .slide-info{padding:18px 18px 22px}
  .slide-title{font-size:17px}
  .slide-desc{display:none}
  .slide-nav{display:none}
  .spotlight-right-head{padding:14px 16px 10px}
  .slide-foot{gap:10px}
  .detail-header{padding:24px 22px 18px}
  .detail-title{font-size:24px}
  .detail-cover-wrap{margin:18px 22px 4px}
  .news-detail-body{padding:16px 22px 8px;font-size:15px;line-height:1.9}
  .detail-footer{padding:16px 22px 26px}
  .detail-nav{grid-template-columns:1fr}
  .detail-nav-next{align-items:flex-start;text-align:left}
  .detail-nav-center{padding:12px 18px}
}

/* ================= 拍题解答（前台） ================= */
.pa-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start}
.pa-main .card{margin-bottom:16px}
.pa-upload{border:2px dashed #d8dbe6;border-radius:14px;padding:36px 20px;text-align:center;cursor:pointer;transition:.2s;background:#fafbfd}
.pa-upload:hover{border-color:#ff9a3c;background:#fff8f2}
.pa-up-inner .pa-up-ico{font-size:44px;margin-bottom:8px}
.pa-up-inner .pa-up-txt b{font-size:15px;color:var(--ink)}
.pa-up-inner .pa-up-txt span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.pa-preview{max-width:100%;max-height:360px;border-radius:12px;margin-bottom:12px;object-fit:contain}
.pa-up-actions{display:flex;justify-content:center;gap:10px}
.pa-quota{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:6px}
.pa-qty-cols{grid-template-columns:repeat(2,1fr)}
.paq-item{background:#f7f8fb;border-radius:10px;padding:12px 8px;text-align:center}
.paq-item b{display:block;font-size:20px;color:var(--primary);font-weight:800}
.paq-item span{font-size:11.5px;color:var(--muted)}
.pa-packs{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:12px}
.pa-pack{position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;border:1.5px solid var(--border);
  border-radius:10px;padding:10px 6px;cursor:pointer;text-align:center;transition:.15s}
.pa-pack:hover{border-color:var(--primary)}
.pa-pack:has(input:checked){border-color:var(--primary);background:#fff7ef}
.pa-pack input{position:absolute;opacity:0;pointer-events:none}
.pa-pack b{font-size:14px;color:var(--ink)}
.pa-pack span{font-size:12px;color:var(--primary);font-weight:700}
.pa-result-body{font-size:14.5px;color:#333}
.pa-result-body .pa-h3{font-weight:800;color:var(--ink);margin:14px 0 4px;font-size:15px}
.pa-result-body .pa-li{margin:2px 0}
.pa-result-body code{background:#f4f5f8;padding:1px 6px;border-radius:5px;font-size:13px}
@media (max-width:900px){
  .pa-layout{grid-template-columns:1fr}
  .pa-side{display:grid;grid-template-columns:1fr 1fr;gap:0 16px;align-items:start}
}

/* ===== 顶部用户下拉菜单 ===== */
.user-menu{position:relative}
.user-trigger{display:flex;align-items:center;gap:6px;padding:7px 12px;border:1px solid var(--border);
  border-radius:10px;background:#fff;cursor:pointer;font-size:14px;color:var(--text);
  font-family:inherit;transition:.18s;line-height:1}
.user-trigger:hover{border-color:var(--primary);color:var(--primary)}
.user-trigger .user-vip{display:inline-block;background:linear-gradient(135deg,#ff9a3c,#ff6a00);
  color:#fff;font-size:10px;font-weight:800;padding:2px 6px;border-radius:4px;letter-spacing:.5px}
.user-trigger .user-name{font-weight:600;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-trigger .user-arrow{color:var(--muted);transition:transform .2s;flex:none}
.user-menu.open .user-arrow{transform:rotate(180deg)}
.user-dropdown{position:absolute;top:calc(100% + 8px);right:0;min-width:220px;width:240px;background:#fff;
  border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 32px rgba(0,0,0,.10);
  padding:8px;display:none;flex-direction:column;gap:2px;z-index:100}
.user-menu.open .user-dropdown{display:flex}
.user-dropdown .ud-info{padding:10px 12px 10px;border-bottom:1px solid var(--border);margin-bottom:6px;
  display:flex;flex-direction:column;gap:2px}
.user-dropdown .ud-info b{font-size:14.5px;color:var(--ink)}
.user-dropdown .ud-info .muted{font-size:12px}
.user-dropdown a{display:flex;flex-direction:row;align-items:center;gap:8px;padding:9px 12px;border-radius:8px;
  font-size:14px;color:var(--text);text-decoration:none;transition:background .15s;line-height:1.4;width:100%;box-sizing:border-box}
.user-dropdown a:hover{background:#f5f6fa;color:var(--primary);text-decoration:none}
.user-dropdown .ud-danger{color:#e14e7f}
.user-dropdown .ud-danger:hover{background:#fff0f5;color:#e14e7f}

/* ===== 后台支付配置：按通道切换的字段组 ===== */
.pf-field{display:flex;flex-direction:column;gap:4px}
.pf-field .pf-label{font-size:12.5px;color:var(--muted);font-weight:600}
.pf-field input,.pf-field select,.pf-field textarea{width:100%}
.pf-field input[type=checkbox]{width:auto}

/* ===== 练习首页 移动端（≤600px） ===== */
@media (max-width:600px){
  .practice-hero{flex-direction:column;align-items:flex-start;gap:14px;padding:20px 18px;border-radius:14px}
  .practice-hero h1{font-size:22px}
  .practice-hero p{font-size:13px;line-height:1.7}
  .ph-badge{font-size:11px;padding:3px 10px;margin-bottom:8px}
  .ph-tag{font-size:11.5px;padding:4px 10px}
  .ph-emoji{width:52px;height:52px;font-size:26px;border-radius:13px}
  .pf-filter{flex-direction:column;align-items:stretch;gap:8px}
  .pf-search{min-width:0}
  .pf-type{width:100%}
  .pf-step{grid-template-columns:28px 1fr;gap:10px}
  .pf-step-no{width:24px;height:24px;font-size:12px;margin-top:22px}
  .pf-select,.pf-count{padding:10px 12px;font-size:14px}
  .qitem{gap:10px;padding:12px;align-items:flex-start}
  .qno{width:28px;height:28px;font-size:13px;border-radius:8px;flex:none}
  .qstem{font-size:14px;margin-bottom:9px}
  .qactions .btn{flex:1;min-width:0}
}

/* ================= 课程章节详情页 ================= */
/* 面包屑 */
.ch-crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin:18px 0 14px}
.ch-crumb a{color:var(--muted)}
.ch-crumb a:hover{color:var(--primary);text-decoration:none}
.ch-crumb-cur{color:var(--ink);font-weight:600}

/* 两栏布局：主内容 + 侧栏目录 */
.ch-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start;padding-bottom:30px}
.ch-main{padding:22px;margin-bottom:0}
.ch-head{margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.ch-type-badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;margin-bottom:10px}
.ch-type-video{background:#eaf1ff;color:#2a5bd7}
.ch-type-audio{background:#f0eaff;color:#7b3fe4}
.ch-type-text{background:#fff3e8;color:var(--primary)}
.ch-title{margin:0 0 8px;font-size:24px;color:var(--ink);line-height:1.4}
.ch-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px}

/* 媒体播放器 */
.ch-media{width:100%;border-radius:12px;margin:6px 0 4px;background:#000;max-height:460px}
/* 图文正文排版 */
.ch-article{font-size:15.5px;line-height:2;color:#333;word-break:break-word}
.ch-article p{margin:0 0 16px}
.ch-article img{max-width:100%;border-radius:10px;margin:6px 0}
.ch-article h2,.ch-article h3{color:var(--ink);margin:22px 0 10px;line-height:1.5}
.ch-article ul,.ch-article ol{padding-left:22px;margin:0 0 16px}
.ch-article blockquote{margin:0 0 16px;padding:10px 14px;border-left:3px solid var(--primary);background:#fff8f1;color:#666;border-radius:0 8px 8px 0}
/* 精品教程组件 */
.ch-article h3{font-size:17px;padding-left:12px;border-left:4px solid var(--primary);font-weight:700}
.lesson-lead{background:linear-gradient(135deg,#fff8f1,#fff);border:1px solid #ffe3cf;border-radius:12px;padding:14px 16px;margin:0 0 18px;color:#7a4a16;font-size:15px;line-height:1.8}
.lesson-lead b{color:#c2560f}
.key-point{background:#f4f8ff;border:1px solid #cfe0ff;border-radius:12px;padding:12px 16px;margin:0 0 18px}
.key-point .kp-h{display:flex;align-items:center;gap:6px;font-weight:700;color:#1f5fbf;margin-bottom:6px;font-size:14.5px}
.key-point ul,.key-point ol{margin:0;padding-left:20px}
.key-point li{margin-bottom:4px;line-height:1.7}
.example-box{background:#fbfaff;border:1px solid #e3dcff;border-radius:12px;padding:12px 16px;margin:0 0 18px}
.example-box .ex-h{font-weight:700;color:#6b3fc4;margin-bottom:6px;font-size:14.5px}
.example-box .ex-q{margin-bottom:8px;line-height:1.8}
.example-box .ex-a{line-height:1.8;color:#444}
.example-box .ex-a b{color:#2f7d32}
.warn-box{background:#fff7f5;border:1px solid #ffd2c7;border-radius:12px;padding:11px 15px;margin:0 0 18px;color:#a23a23;line-height:1.8;font-size:14.5px}
.warn-box b{color:#c5260c}
.lesson-summary{background:#f6fbf6;border:1px solid #cdeccd;border-radius:12px;padding:12px 16px;margin:6px 0 0}
.lesson-summary .ls-h{font-weight:700;color:#2f7d32;margin-bottom:6px;font-size:14.5px}
.lesson-summary ul{margin:0;padding-left:20px}
.lesson-summary li{margin-bottom:4px;line-height:1.7}

/* 操作 + 上下节导航 */
.ch-actions{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 6px}
.ch-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px;border-top:1px solid var(--border);padding-top:20px}
.ch-nav-cell.end{text-align:right}
.ch-nav-link{display:flex;flex-direction:column;gap:4px;background:#f7f8fb;border:1px solid var(--border);border-radius:12px;padding:12px 14px;color:var(--text);text-decoration:none;transition:.15s;min-height:62px;justify-content:center}
.ch-nav-link:hover{text-decoration:none;border-color:var(--primary);color:var(--primary);box-shadow:0 4px 14px rgba(29,35,64,.06)}
.ch-nav-link.next{text-align:right;align-items:flex-end}
.ch-nav-dir{font-size:13px;color:var(--muted)}
.ch-nav-name{font-weight:600;font-size:14.5px;color:var(--ink)}
.ch-nav-empty{color:var(--muted);font-size:13px;display:flex;align-items:center;min-height:62px}

/* 侧栏目录（复用 .side-box/.side-title） */
.ch-side-prog{font-size:12px;color:var(--muted);margin-bottom:10px;padding:6px 10px;background:#f7f8fb;border-radius:8px}
.ch-toc-side{position:sticky;top:80px}
.ch-toc-sec{margin-bottom:6px}
.ch-toc-sec-h{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:10px;color:#1f2937;font-weight:700;font-size:14px;text-decoration:none;transition:.15s;background:#fafbfd}
.ch-toc-sec-h:hover{text-decoration:none;background:#fff3e8;color:var(--primary)}
.ch-toc .ch-toc-sec-h.on,
.ch-toc-sec-h.on{background:#fff3e8;color:var(--primary);font-weight:800;border-left:3px solid var(--primary);padding-left:9px;text-shadow:none}
.ch-toc .ch-toc-sec-h.on .ch-toc-ico,
.ch-toc-sec-h.on .ch-toc-ico{filter:sepia(1) saturate(6) hue-rotate(-15deg)}
.ch-toc-item{display:flex;align-items:center;gap:8px;padding:9px 12px 9px 30px;border-radius:10px;color:#374151;font-size:13.5px;text-decoration:none;transition:.15s;line-height:1.4}
.ch-toc-item:hover{text-decoration:none;background:#fff3e8;color:var(--primary)}
.ch-toc-item.on{background:#fff3e8;color:var(--primary);font-weight:700;border-left:3px solid var(--primary);padding-left:27px}
.ch-toc-item.on .ch-toc-title{font-weight:700}
.ch-toc-ico{flex:none;font-size:14px}
.ch-toc-title{flex:1;min-width:0}
.ch-toc-type{flex:none;font-size:11px;color:var(--muted);background:#f0f0f0;padding:1px 7px;border-radius:999px}
.ch-toc-go{flex:none;font-size:12px;color:var(--primary);font-weight:600;margin-left:auto}
.ch-toc-check{flex:none;color:var(--ok);font-weight:800;margin-left:auto}

/* 课程详情页：章节目录（点击进入详情） */
.ch-toc .ch-toc-sec-h{font-size:15px;padding:12px 14px;background:#fafbfd;border:1px solid var(--border)}
.ch-toc .ch-toc-item{border:1px solid transparent;border-left:3px solid transparent;padding-left:30px}
.ch-toc .ch-toc-item:hover{border-color:var(--border);border-left-color:var(--primary)}

/* 章节详情 移动端 */
@media (max-width:860px){
  .ch-layout{grid-template-columns:1fr;gap:16px}
  .ch-toc-side{position:static}
  .ch-side{order:2}
}
@media (max-width:600px){
  .ch-main{padding:16px;border-radius:12px}
  .ch-title{font-size:20px}
  .ch-article{font-size:14.5px;line-height:1.9}
  .ch-nav{grid-template-columns:1fr;gap:10px}
  .ch-nav-cell.end{text-align:left}
  .ch-nav-link.next{text-align:left;align-items:flex-start}
  .ch-crumb{font-size:12px;margin:14px 0 10px}
}
/* 站内信：头部铃铛角标 / 下拉未读数 / 移动端角标 */
.user-msg{position:relative;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;color:var(--muted);text-decoration:none;margin-right:4px}
.user-msg:hover{background:var(--bg-soft,#f1f2f6);color:var(--primary)}
.msg-badge,.m-msg-badge{position:absolute;min-width:16px;height:16px;padding:0 4px;border-radius:9px;background:#e24b4a;color:#fff;font-size:10px;line-height:16px;text-align:center;font-weight:600}
.msg-badge{top:-2px;right:-4px}
.m-msg-badge{top:-4px;right:-8px}
.ud-badge{display:inline-block;min-width:16px;padding:0 5px;margin-left:6px;border-radius:8px;background:#e24b4a;color:#fff;font-size:10px;line-height:16px;text-align:center;font-weight:600}

/* 章节详情 移动端章节目录（补齐：此前无 CSS，使用浏览器默认样式易出现浅色看不清） */
.m-ch-toc{background:var(--bg-soft,#f7f8fb);border-radius:10px;padding:6px}
.m-ch-toc-h{font-weight:700;color:#1f2937;padding:8px 10px;border-bottom:1px solid var(--border);margin-bottom:4px}
.m-ch-toc-sec{display:block;padding:10px 12px;border-radius:8px;color:#1f2937;text-decoration:none;font-weight:600;font-size:14px;transition:.15s}
.m-ch-toc-sec:hover{text-decoration:none;background:#fff3e8;color:var(--primary)}
.m-ch-toc-sec.on{background:#fff3e8;color:var(--primary);font-weight:800;border-left:3px solid var(--primary);padding-left:9px}
.m-ch-toc-item{display:block;padding:9px 12px 9px 28px;border-radius:8px;color:#374151;text-decoration:none;font-size:13.5px;transition:.15s;line-height:1.4}
.m-ch-toc-item:hover{text-decoration:none;background:#fff3e8;color:var(--primary)}
.m-ch-toc-item.on{background:#fff3e8;color:var(--primary);font-weight:700;border-left:3px solid var(--primary);padding-left:25px}

/* =========================================================
   学习笔记（Learning Notes）— PC 端
   配色：温馨橙蓝 (#ff6a00 / #4b53c9)
   ========================================================= */
.note-hero{position:relative;overflow:hidden;border-radius:18px;padding:34px 36px 30px;margin:8px 0 22px;color:#fff;box-shadow:0 14px 30px rgba(75,83,201,.18)}
.note-hero-bg{position:absolute;inset:0;background:linear-gradient(120deg,#4b53c9 0%,#7b66ef 48%,#ff8a33 100%);z-index:0}
.note-hero-bg::after{content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.32),rgba(255,255,255,0) 60%);}
.note-hero-bg::before{content:"";position:absolute;left:-40px;bottom:-110px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(255,106,0,.28),rgba(255,106,0,0) 60%);}
.note-hero-main{position:relative;z-index:1;display:grid;grid-template-columns:1fr 340px;gap:22px;align-items:center}
.note-hero--small{padding:22px 28px 20px}
.note-hero-l h1{margin:0 0 8px;font-size:30px;font-weight:800;letter-spacing:.5px;text-shadow:0 2px 6px rgba(0,0,0,.12)}
.note-hero-sub{margin:0;color:rgba(255,255,255,.88);font-size:14px;line-height:1.8}
.note-hero-sub .crumb{color:#fff;opacity:.9;font-weight:600;text-decoration:none;border-bottom:1px dashed rgba(255,255,255,.6)}
.note-hero-sub .crumb:hover{opacity:1}
.note-hero-actions{margin-top:18px;display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.note-btn-create{padding:11px 22px;font-weight:700;border-radius:999px;background:#fff;color:#ff6a00 !important;border:none;box-shadow:0 10px 24px rgba(255,106,0,.28);transition:.18s}
.note-btn-create:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(255,106,0,.38)}
.note-hero-tip{font-size:12.5px;color:rgba(255,255,255,.82)}
.note-quota-box{background:rgba(255,255,255,.97);border-radius:16px;padding:16px 18px;color:#3a3f5c;box-shadow:0 10px 28px rgba(40,44,80,.14)}
.note-quota-title{font-weight:700;font-size:13.5px;color:#4b53c9;margin-bottom:8px;display:flex;align-items:center;gap:6px}
.note-quota-stats{display:flex;align-items:baseline;gap:6px;font-weight:800;margin-bottom:8px}
.note-quota-used{font-size:22px;color:#ff6a00}
.note-quota-slash{color:#c8cbda;font-size:14px}
.note-quota-limit{font-size:14px;color:#4b53c9}
.note-quota-percent{margin-left:auto;font-size:14px;color:#8a8fa8;font-weight:700}
.note-quota-bar{height:8px;border-radius:999px;background:#eef0f8;overflow:hidden}
.note-quota-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#4b53c9,#7b66ef 60%,#ff8a33);transition:width .4s ease}
.note-quota--warn .note-quota-fill{background:linear-gradient(90deg,#ffb347,#ff6a00)}
.note-quota--over .note-quota-fill{background:linear-gradient(90deg,#ff6a6a,#e24b4a)}
.note-quota-foot{margin-top:8px;font-size:12.5px;color:#6b6f87}
.note-quota-alert{color:#c5322e;font-weight:700}
.note-quota-alert a{color:#ff6a00}

.note-section{background:#fff;border-radius:16px;padding:20px 22px;box-shadow:0 4px 18px rgba(40,44,80,.06);margin-bottom:22px}
.note-sec-head{display:flex;justify-content:space-between;align-items:center;margin:2px 4px 14px}
.note-sec-head h2{margin:0;font-size:18px;color:#262a45;font-weight:700}
.note-link-all{color:#4b53c9;font-weight:700;text-decoration:none;border:1px solid #e3e6f5;padding:6px 14px;border-radius:999px;font-size:13px;transition:.15s}
.note-link-all:hover{background:#4b53c9;color:#fff;border-color:#4b53c9;text-decoration:none}

.note-empty{padding:48px 20px 44px;text-align:center;color:#5b5f76}
.note-empty-ico{font-size:56px;margin-bottom:8px}
.note-empty h3{margin:0 0 6px;color:#2a2d4a}
.note-empty p{margin:0 0 16px;color:#8a8fa8}

.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.note-card{background:#fff;border-radius:14px;padding:0;overflow:hidden;border:1px solid #edf0f7;text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:.18s;box-shadow:0 4px 14px rgba(40,44,80,.04)}
.note-card:hover{transform:translateY(-3px);box-shadow:0 16px 30px rgba(75,83,201,.12);border-color:#ffd9be;text-decoration:none}
.note-cover{position:relative;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;overflow:hidden;color:#fff;font-size:46px;text-shadow:0 2px 6px rgba(0,0,0,.15)}
.note-cover img{width:100%;height:100%;object-fit:cover;display:block}
.note-cover-badge{position:absolute;right:10px;bottom:10px;background:rgba(255,255,255,.92);color:#4b53c9;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700;box-shadow:0 4px 10px rgba(0,0,0,.1)}
.note-card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.note-title{margin:0;font-size:16px;font-weight:700;color:#262a45;line-height:1.45;max-height:2.9em;overflow:hidden}
.note-summary{margin:0;color:#5b5f76;font-size:13.5px;line-height:1.7;max-height:3.4em;overflow:hidden}
.note-meta{margin-top:auto;display:flex;justify-content:space-between;align-items:center;color:#8a8fa8;font-size:12px}
.note-size{background:#f5f6fb;color:#4b53c9;padding:2px 8px;border-radius:999px;font-weight:700}
.note-pager{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:24px;padding-top:18px;border-top:1px dashed #e3e6f5}
.note-pager-text{color:#7a7f98;font-size:13px}

/* 详情页 */
.note-view-card{padding:6px 22px 22px;}
.note-view-head{padding:16px 0 18px;border-bottom:1px solid #edf0f7;margin-bottom:18px}
.note-view-head h2{margin:0;font-size:26px;color:#2a2d4a;font-weight:800;line-height:1.45}
.note-view-content{font-size:15.5px;line-height:2;color:#35395a}
.note-view-content p{margin:0 0 16px}
.note-view-content img{max-width:100%;border-radius:10px;margin:6px auto;display:block;box-shadow:0 6px 18px rgba(40,44,80,.1)}
.note-view-content h1,.note-view-content h2,.note-view-content h3{color:#2a2d4a;margin:24px 0 10px;font-weight:700;line-height:1.5}
.note-view-content h2{font-size:20px;padding-left:12px;border-left:4px solid #ff6a00}
.note-view-content h3{font-size:17px;padding-left:10px;border-left:3px solid #4b53c9}
.note-view-content blockquote{margin:0 0 16px;padding:10px 14px;border-left:3px solid #ff8a33;background:#fff8f1;color:#6a5131;border-radius:0 8px 8px 0}
.note-view-content table{border-collapse:collapse;margin:0 0 16px;width:100%}
.note-view-content th,.note-view-content td{border:1px solid #e3e6f5;padding:8px 12px}
.note-view-content th{background:#f5f6fb}
.note-view-content code{background:#f2f3fb;color:#4b53c9;padding:1px 6px;border-radius:5px;font-size:13px}
.note-view-content pre{background:#2c2f48;color:#e6e8f5;padding:12px 14px;border-radius:10px;overflow:auto;margin:0 0 16px;font-size:13px}
.note-view-content ul,.note-view-content ol{padding-left:22px;margin:0 0 16px}
.note-view-content li{margin:2px 0;line-height:1.8}
.note-view-content a{color:#ff6a00;text-decoration:none;border-bottom:1px dashed rgba(255,106,0,.4)}

/* 编辑页 */
.note-editor-card{padding:4px 4px 14px}
.note-field-block{display:block;margin:0 0 18px}
.note-field-label{display:flex;justify-content:space-between;align-items:flex-end;gap:14px;font-weight:700;color:#2a2d4a;font-size:14px;margin:0 0 8px}
.note-field-tip{font-weight:400;color:#8a8fa8;font-size:12px;flex:1;text-align:right}
#noteTitle{width:100%;height:46px;padding:0 14px;font-size:16px;border:1px solid #dfe2ef;border-radius:12px;outline:none;transition:.15s;background:#fbfcff;color:#2a2d4a}
#noteTitle:focus{border-color:#ff6a00;box-shadow:0 0 0 4px rgba(255,106,0,.12);background:#fff}
.note-editor-wrap{border:1px solid #dfe2ef;border-radius:12px;overflow:hidden;background:#fff}
.note-editor-wrap .w-e-text-container{min-height:380px}
.note-editor-footer{display:flex;justify-content:space-between;align-items:center;margin-top:14px;gap:10px;flex-wrap:wrap;padding:14px 14px 4px;border-top:1px dashed #e3e6f5}
.note-editor-status{color:#8a8fa8;font-size:13px}
.note-editor-actions{display:flex;gap:10px}

/* 收银台价格明细 */
.price-breakdown{margin-top:14px;border:1px solid var(--border);border-radius:12px;background:#fff;padding:14px 16px}
.price-breakdown .bd-title{font-weight:700;font-size:14px;margin-bottom:10px;color:#333}
.price-breakdown ul{list-style:none;margin:0;padding:0}
.price-breakdown li{display:flex;justify-content:space-between;align-items:center;padding:6px 0;font-size:13px;color:#555}
.price-breakdown li.save b{color:#e67e22;font-weight:600}
.price-breakdown .bd-total{display:flex;justify-content:space-between;align-items:center;margin-top:10px;padding-top:10px;border-top:1px dashed #e3e6f5;font-size:15px}
.price-breakdown .bd-total b{color:var(--primary);font-size:20px;font-weight:800}
.price-breakdown .bd-tip{margin-top:8px;font-size:12px;text-align:right}

/* 响应式（PC） */
@media (max-width:1060px){
  .note-grid{grid-template-columns:repeat(2,1fr)}
  .note-hero-main{grid-template-columns:1fr}
}
@media (max-width:680px){
  .note-grid{grid-template-columns:1fr}
  .note-hero{padding:22px 18px;margin:4px 0 16px;border-radius:14px}
  .note-hero-l h1{font-size:24px}
  .note-section{padding:16px 14px}
}