/* ============================================================
   成人学位英语在线学习平台 · 学员端样式
   设计基调：考试/教务系统。深墨蓝主色、方角、细边框、数字对齐
   ============================================================ */
:root{
  --brand:#17365d;
  --brand-dark:#10243d;
  --brand-soft:#eef3f9;
  --accent:#a87b2c;
  --ok:#0a7a52;
  --ok-soft:#e9f5ef;
  --err:#b42318;
  --err-soft:#fdf0ef;
  --warn:#b54708;
  --warn-soft:#fdf6ec;
  --text:#101828;
  --text-2:#475467;
  --text-3:#98a2b3;
  --line:#e4e7ec;
  --line-2:#f2f4f7;
  --bg:#f4f6f9;
  --card:#fff;
  --radius:6px;
  --shadow:none;
  --safe-bottom:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:14.5px;line-height:1.65;color:var(--text);background:var(--bg);
  padding-bottom:calc(58px + var(--safe-bottom));
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.01em}
p{margin:0 0 10px}
b,strong{font-weight:600}
.page{padding:12px 12px 24px;max-width:680px;margin:0 auto}
.num,.tabular{font-variant-numeric:tabular-nums}

/* 页面标题 */
.page-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;
  margin:2px 2px 14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.page-head h1{font-size:17px;color:var(--text)}
.page-head .sub{font-size:12px;color:var(--text-3);text-align:right;flex:0 0 auto}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;margin-bottom:10px}
.card-tight{padding:12px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.card-head h3{font-size:14px;color:var(--text);position:relative;padding-left:9px}
.card-head h3::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:13px;background:var(--brand);border-radius:1px}
.card-head .more{font-size:12px;color:var(--text-3);white-space:nowrap}

/* 学员信息条 */
.hero{background:#fff;border:1px solid var(--line);border-top:3px solid var(--brand);
  border-radius:var(--radius);padding:14px 14px 0;margin-bottom:10px}
.hero .row{display:flex;align-items:center;gap:11px}
.hero .avatar{width:40px;height:40px;border-radius:4px;background:var(--brand-soft);
  border:1px solid #dbe4ef;overflow:hidden;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:15px;font-weight:600}
.hero .avatar img{width:100%;height:100%;object-fit:cover}
.hero .name{font-size:15px;font-weight:600;color:var(--text);line-height:1.4}
.hero .tip{font-size:11.5px;color:var(--text-3);margin-top:1px}
.hero .metrics{display:grid;grid-template-columns:repeat(4,1fr);margin:13px -14px 0;
  border-top:1px solid var(--line)}
.hero .metrics div{padding:11px 2px;text-align:center;border-right:1px solid var(--line)}
.hero .metrics div:last-child{border-right:0}
.hero .metrics b{display:block;font-size:19px;font-weight:600;color:var(--brand);
  line-height:1.25;font-variant-numeric:tabular-nums}
.hero .metrics span{font-size:11px;color:var(--text-3)}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:10px}
.stat{display:block;padding:12px 4px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:18px;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3}
.stat span{font-size:11px;color:var(--text-3)}

/* 列表 */
.list{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;margin-bottom:10px}
.list-item{display:flex;align-items:center;gap:11px;padding:12px 13px;border-bottom:1px solid var(--line-2)}
.list-item:last-child{border-bottom:0}
.list-item .ico{width:32px;height:32px;border-radius:4px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex:0 0 auto;
  border:1px solid #e0e8f2;font-variant-numeric:tabular-nums}
.list-item .body{flex:1;min-width:0}
.list-item .t{font-size:14px;font-weight:500;display:flex;align-items:center;gap:6px;color:var(--text)}
.list-item .d{font-size:12px;color:var(--text-3);margin-top:2px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.list-item .arrow{color:#c8ced9;font-size:15px;flex:0 0 auto}
.list-item .go,.chap .go{font-size:12px;color:var(--brand);border:1px solid #b9c8da;background:#fff;
  border-radius:4px;padding:4px 12px;flex:0 0 auto;font-weight:500}

/* 章节条目（首页/练习页） */
.chap{display:flex;align-items:center;gap:11px;padding:11px 0;border-bottom:1px solid var(--line-2)}
.chap:last-child{border-bottom:0}
.chap .no{width:28px;height:28px;border-radius:4px;background:#f7f9fc;border:1px solid var(--line);
  color:var(--text-2);font-size:12px;font-weight:600;display:flex;align-items:center;
  justify-content:center;flex:0 0 auto;font-variant-numeric:tabular-nums}
.chap .body{flex:1;min-width:0}
.chap .t{font-size:14px;font-weight:500;color:var(--text);overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.chap .d{font-size:11.5px;color:var(--text-3);margin-top:3px;display:flex;align-items:center;gap:8px}
.chap .d .pbar{flex:0 0 64px;height:3px;background:#eef1f5;border-radius:2px;overflow:hidden}
.chap .d .pbar i{display:block;height:100%;background:var(--brand);border-radius:2px}
.chap .side{flex:0 0 auto;text-align:right}
.chap .side .rate{font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}
.chap .side .rate.ok{color:var(--ok)}
.chap .side .rate.mid{color:var(--warn)}
.chap .side .rate.low{color:var(--err)}
.chap .side .lbl{font-size:10.5px;color:var(--text-3)}
.chap-box{padding:11px 0;border-bottom:1px solid var(--line-2)}
.chap-box:last-child{border-bottom:0;padding-bottom:2px}
.chap-box .name{font-size:14px;font-weight:500;color:var(--text)}
.chap-box .meta{font-size:11.5px;color:var(--text-3);margin-top:3px}
.chap-box .setup{margin-top:11px;padding-top:11px;border-top:1px dashed var(--line);display:none}
.chap-box .setup.on{display:block}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;cursor:pointer;
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:500;padding:10px 18px;
  border-radius:4px;font-family:inherit;width:100%;transition:background .15s;line-height:1.4}
.btn:hover{background:var(--brand-dark)}
.btn:active{opacity:.9}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn-ghost{background:var(--brand-soft);color:var(--brand)}
.btn-ghost:hover{background:#e3ebf5}
.btn-line{background:#fff;color:var(--brand);border:1px solid #c6d3e3}
.btn-line:hover{background:#f7f9fc}
.btn-gray{background:#f2f4f7;color:var(--text-2)}
.btn-gray:hover{background:#e9ecf1}
.btn-sm{padding:6px 13px;font-size:12.5px;width:auto;border-radius:4px}
.btn-row{display:flex;gap:9px}

/* 徽章 */
.badge{display:inline-block;font-size:11px;padding:1px 7px;border-radius:3px;
  background:var(--brand-soft);color:var(--brand);font-weight:500;line-height:1.7;
  border:1px solid #dde6f1}
.badge-ok{background:var(--ok-soft);color:var(--ok);border-color:#cfe8db}
.badge-err{background:var(--err-soft);color:var(--err);border-color:#f7d9d6}
.badge-gray{background:#f4f6f9;color:var(--text-3);border-color:var(--line)}
.badge-warn{background:var(--warn-soft);color:var(--warn);border-color:#f5e2c8}

/* 表单 */
.field{margin-bottom:12px}
.field label{display:block;font-size:12.5px;color:var(--text-2);margin-bottom:5px;font-weight:500}
.field input[type=text],.field input[type=password],.field input[type=number],
.field select,.field textarea{
  width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:4px;font-size:14.5px;
  font-family:inherit;color:var(--text);background:#fff;outline:none;transition:border-color .15s
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(23,54,93,.08)}
.field .hint{font-size:11.5px;color:var(--text-3);margin-top:4px}

/* 答题 */
.q-block{margin-bottom:12px}
.q-stem{font-size:15px;line-height:1.8;margin-bottom:13px;white-space:pre-wrap;
  word-break:break-word;color:var(--text)}
.q-material{background:#f8fafc;border-left:3px solid #b9c9dc;padding:10px 12px;border-radius:3px;
  font-size:13.5px;line-height:1.85;color:var(--text-2);margin-bottom:13px;white-space:pre-wrap}
.opt{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);
  border-radius:4px;margin-bottom:8px;background:#fff;cursor:pointer;transition:border-color .12s,background .12s}
.opt:active{background:#fafbfc}
.opt .k{width:22px;height:22px;border-radius:50%;border:1px solid #c8ced9;color:var(--text-3);
  font-size:11.5px;display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  margin-top:1px;font-weight:600}
.opt .txt{flex:1;font-size:14px;line-height:1.65;word-break:break-word;color:var(--text)}
.opt.on{border-color:var(--brand);background:var(--brand-soft)}
.opt.on .k{background:var(--brand);border-color:var(--brand);color:#fff}
.opt.ok{border-color:#9dd3b8;background:var(--ok-soft)}
.opt.ok .k{background:var(--ok);border-color:var(--ok);color:#fff}
.opt.bad{border-color:#f0bcb8;background:var(--err-soft)}
.opt.bad .k{background:var(--err);border-color:var(--err);color:#fff}

/* 解析 */
.analysis{background:var(--warn-soft);border:1px solid #f2e2cd;border-radius:4px;
  padding:11px 12px;margin-top:10px;font-size:13px;line-height:1.8;color:var(--text-2)}
.analysis .h{color:var(--warn);font-weight:600;margin-bottom:5px;font-size:12.5px}
.analysis .ans{color:var(--ok);font-weight:600}

/* 答题卡 */
.answer-sheet{display:grid;grid-template-columns:repeat(8,1fr);gap:7px;margin-top:6px}
.answer-sheet a{aspect-ratio:1;display:flex;align-items:center;justify-content:center;
  border-radius:3px;background:#f4f6f9;color:var(--text-2);font-size:12.5px;
  font-variant-numeric:tabular-nums;border:1px solid var(--line)}
.answer-sheet a.done{background:var(--brand);color:#fff;border-color:var(--brand)}
.answer-sheet a.cur{outline:2px solid var(--brand);outline-offset:1px}

/* 进度条 */
.bar{height:4px;background:#e9edf3;border-radius:2px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--brand);border-radius:2px;transition:width .3s}

/* 结果页 */
.score-ring{width:118px;height:118px;border-radius:50%;margin:4px auto 12px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:var(--brand);background:#fff;border:3px solid var(--brand)}
.score-ring b{font-size:32px;line-height:1;font-weight:600;font-variant-numeric:tabular-nums}
.score-ring span{font-size:11px;color:var(--text-3);margin-top:5px}
.kv{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--line-2);font-size:13.5px}
.kv:last-child{border-bottom:0}
.kv span{color:var(--text-3)}
.kv b{font-weight:600;font-variant-numeric:tabular-nums}

/* 视频 */
.video-wrap{background:#000;position:relative}
.video-wrap video{width:100%;display:block;max-height:56vw;background:#000}
.video-info{padding:14px}
.video-info h1{font-size:16px;margin-bottom:6px}
.video-meta{font-size:12px;color:var(--text-3)}
.cover{position:relative;background:#0b1520;aspect-ratio:16/9;overflow:hidden}
.cover img{width:100%;height:100%;object-fit:cover;opacity:.9}
.cover .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.cover .play i{width:42px;height:42px;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;
  display:flex;align-items:center;justify-content:center;font-style:normal;font-size:14px}
.cover .dur{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.62);color:#fff;
  font-size:11px;padding:1px 6px;border-radius:3px;font-variant-numeric:tabular-nums}

/* 导购 */
.book{display:flex;gap:12px;padding:13px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);margin-bottom:10px}
.book .pic{width:58px;height:80px;border-radius:3px;background:#f4f6f9;overflow:hidden;flex:0 0 auto;
  border:1px solid var(--line)}
.book .pic img{width:100%;height:100%;object-fit:cover}
.book .info{flex:1;min-width:0}
.book .info h4{font-size:14px;margin-bottom:4px}
.book .info p{font-size:12px;color:var(--text-3);margin:0 0 8px}
.book .buy{display:inline-block;font-size:12px;padding:4px 12px;border-radius:3px;color:#fff;background:var(--brand)}

/* 空状态 */
.empty{text-align:center;padding:44px 20px;color:var(--text-3)}
.empty .ico{font-size:26px;margin-bottom:10px;opacity:.35}
.empty p{font-size:13px;margin:0}

/* 分页 */
.pager{display:flex;justify-content:center;gap:6px;padding:14px 0}
.pager a,.pager span{padding:5px 11px;border-radius:3px;background:#fff;font-size:12.5px;
  color:var(--text-2);border:1px solid var(--line)}
.pager .on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* 底部导航 */
.tabbar{position:fixed;left:0;right:0;bottom:0;height:calc(56px + var(--safe-bottom));
  padding-bottom:var(--safe-bottom);background:#fff;border-top:1px solid var(--line);
  display:flex;z-index:50}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:var(--text-3);font-size:11px;gap:3px;position:relative}
.tabbar a.on{color:var(--brand)}
.tabbar a.on::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;background:var(--brand);border-radius:0 0 2px 2px}
.tabbar a svg{width:21px;height:21px;display:block}
.tabbar a i{font-style:normal;font-size:18px;line-height:1}

/* 底部固定操作条 */
.footbar{position:fixed;left:0;right:0;bottom:0;padding:9px 12px calc(9px + var(--safe-bottom));
  background:#fff;border-top:1px solid var(--line);display:flex;gap:9px;z-index:60}
body.has-footbar{padding-bottom:calc(80px + var(--safe-bottom))}

/* 顶部返回栏 */
.navbar{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;height:46px;padding:0 12px;gap:8px}
.navbar .back{font-size:19px;color:var(--text-2);width:24px;text-align:left}
.navbar .title{flex:1;font-size:15px;font-weight:600;text-align:center;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.navbar .timer{font-size:14px;color:var(--err);font-weight:600;min-width:52px;text-align:right;
  font-variant-numeric:tabular-nums}

/* 提示条 */
.alert{padding:9px 12px;border-radius:4px;font-size:13px;margin-bottom:10px;border:1px solid transparent}
.alert-err{background:var(--err-soft);color:#912018;border-color:#f7d9d6}
.alert-ok{background:var(--ok-soft);color:#05603a;border-color:#cfe8db}
.alert-info{background:var(--brand-soft);color:var(--brand-dark);border-color:#dde6f1}
.alert-warn{background:var(--warn-soft);color:#93370d;border-color:#f5e2c8}

.mt8{margin-top:8px}.mt12{margin-top:12px}.mb0{margin-bottom:0}
.flex{display:flex;align-items:center}.between{justify-content:space-between}
.muted{color:var(--text-3);font-size:12px}
.hr{height:1px;background:var(--line);margin:12px 0}

/* 暂无题目的章节 */
.chap .go.off{color:#98a2b3;border-color:#e4e7ec;background:#fafbfc}

/* ============================================================
   2026-11-09 学员端首页改版：品牌栏 / 搜索 / 轮播 / 公告 /
   快捷导航宫格 / 学习数据 / 继续练习 / 章节 / 视频 / 模考入口
   同时补 .mask .modal 弹层（首页公告详情用）与搜索页样式
   ============================================================ */

/* ---------- 顶部品牌栏 ---------- */
.home-top{
  background:linear-gradient(135deg,#17365d 0%,#0d2542 100%);
  margin:-12px -12px 12px;padding:16px 14px 15px;color:#fff;
}
.home-brand{display:flex;align-items:center;gap:10px;margin-bottom:13px}
.hb-logo{
  width:36px;height:36px;flex:0 0 auto;border-radius:9px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;letter-spacing:.5px;
}
.hb-txt{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.hb-txt b{font-size:15.5px;font-weight:600;letter-spacing:.3px}
.hb-txt i{font-size:11.5px;font-style:normal;color:rgba(255,255,255,.62);margin-top:2px}

.home-search{display:flex;align-items:center;gap:8px;background:#fff;border-radius:22px;padding:0 5px 0 12px;height:38px}
.home-search svg{width:16px;height:16px;color:var(--text-3);flex:0 0 auto}
.home-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:13.5px;color:var(--text);font-family:inherit}
.home-search input::placeholder{color:var(--text-3)}
.home-search button{
  flex:0 0 auto;height:28px;padding:0 15px;border:0;border-radius:16px;
  background:var(--brand);color:#fff;font-size:12.5px;font-family:inherit;cursor:pointer;
}

/* ---------- 轮播 ---------- */
.banner{position:relative;border-radius:8px;overflow:hidden;margin-bottom:10px;aspect-ratio:2.3/1;background:#dde6f1}
.bn-track{position:absolute;inset:0}
.bn-slide{position:absolute;inset:0;opacity:0;transition:opacity .55s ease;pointer-events:none}
.bn-slide.on{opacity:1;pointer-events:auto}
.bn-ph{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;padding:0 20px;color:#fff}
.bn-ph b{font-size:16.5px;font-weight:600;letter-spacing:.4px;line-height:1.35}
.bn-ph i{font-size:12px;font-style:normal;color:rgba(255,255,255,.8);margin-top:6px;line-height:1.5}
.bn-ph-1{background:linear-gradient(115deg,#17365d,#2f639e)}
.bn-ph-2{background:linear-gradient(115deg,#0f4c46,#1a8071)}
.bn-ph-3{background:linear-gradient(115deg,#6b3f14,#a87b2c)}
.bn-mask{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;padding:14px 16px;
  background:linear-gradient(to top,rgba(8,20,34,.78),rgba(8,20,34,.1));color:#fff}
.bn-mask b{font-size:15px;font-weight:600}
.bn-mask i{font-size:11.5px;font-style:normal;opacity:.8;margin-top:3px}
.bn-link{position:absolute;inset:0;z-index:2}
.bn-dots{position:absolute;right:11px;bottom:9px;display:flex;gap:5px;z-index:3}
.bn-dots span{width:6px;height:6px;border-radius:3px;background:rgba(255,255,255,.42);transition:all .3s}
.bn-dots span.on{width:16px;background:#fff}

/* ---------- 公告条 ---------- */
.notice-bar{
  display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:8px 11px;margin-bottom:10px;overflow:hidden;
}
.nb-tag{
  flex:0 0 auto;font-size:11px;font-weight:600;color:var(--accent);
  background:#fdf6ec;border:1px solid #f2e2c4;border-radius:3px;padding:1px 6px;line-height:1.6;
}
.nb-view{flex:1;min-width:0;height:22px;overflow:hidden}
.nb-list{will-change:transform}
.nb-list.nb-roll{animation:nbScroll 18s linear infinite}
.nb-item{
  display:block;height:22px;line-height:22px;font-size:12.5px;color:var(--text-2);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.nb-item em{
  font-style:normal;font-size:10.5px;color:var(--err);background:var(--err-soft);
  border-radius:2px;padding:0 4px;margin-right:5px;
}
@keyframes nbScroll{
  0%,15%{transform:translateY(0)}
  20%,35%{transform:translateY(-22px)}
  40%,55%{transform:translateY(-44px)}
  60%,75%{transform:translateY(-66px)}
  80%,95%{transform:translateY(-88px)}
  100%{transform:translateY(-110px)}
}

/* ---------- 快捷导航宫格 ---------- */
.grid-nav{
  display:grid;grid-template-columns:repeat(4,1fr);gap:2px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:13px 4px;margin-bottom:10px;
}
.gn-cell{display:flex;flex-direction:column;align-items:center;gap:7px;padding:3px 0}
.gn-ico{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center}
.gn-ico svg{width:20px;height:20px}
.gn-t{font-size:12px;color:var(--text-2);line-height:1.2}
.gn-ico.c1{background:#eef3f9;color:#17365d}
.gn-ico.c2{background:#fdf6ec;color:#a87b2c}
.gn-ico.c3{background:#e9f5ef;color:#0a7a52}
.gn-ico.c4{background:#fdf0ef;color:#b42318}
.gn-ico.c5{background:#f1f0fb;color:#4b4b9e}
.gn-ico.c6{background:#eaf6f9;color:#0e7490}
.gn-ico.c7{background:#f9eff5;color:#8e3b6b}
.gn-ico.c8{background:#f2f4f7;color:#475467}

/* ---------- 学习数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);text-align:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 0;margin-bottom:10px;
}
.ss-cell{position:relative;padding:0 2px}
.ss-cell+.ss-cell::before{content:'';position:absolute;left:0;top:16%;height:68%;width:1px;background:var(--line-2)}
.ss-cell b{display:block;font-size:16.5px;font-weight:600;color:var(--brand);line-height:1.3;font-variant-numeric:tabular-nums}
.ss-cell span{font-size:11px;color:var(--text-3)}

/* ---------- 继续上次练习 ---------- */
.resume-bar{
  display:flex;align-items:center;gap:11px;margin-bottom:10px;padding:12px 14px;
  border-radius:var(--radius);background:linear-gradient(120deg,#17365d,#25527f);color:#fff;
}
.rb-ico{width:32px;height:32px;flex:0 0 auto;border-radius:50%;background:rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center}
.rb-ico svg{width:13px;height:13px;fill:#fff;stroke:none;margin-left:2px}
.rb-txt{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.4}
.rb-txt b{font-size:13.5px;font-weight:600}
.rb-txt i{font-size:11.5px;font-style:normal;color:rgba(255,255,255,.72);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rb-go{flex:0 0 auto;font-size:12px;padding:3px 12px;border-radius:20px;background:rgba(255,255,255,.18)}

/* ---------- 章节行 ---------- */
.chap-list{display:flex;flex-direction:column}
.chap-row{display:flex;align-items:center;gap:11px;padding:11px 0;border-top:1px solid var(--line-2)}
.chap-row:first-child{border-top:0;padding-top:1px}
.cr-no{
  width:24px;height:24px;flex:0 0 auto;border-radius:5px;background:var(--brand-soft);color:var(--brand);
  font-size:11.5px;font-weight:600;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.cr-main{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.4}
.cr-main b{font-size:13.5px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cr-main i{font-size:11.5px;font-style:normal;color:var(--text-3)}
.cr-go{flex:0 0 auto;font-size:12px;color:var(--brand);border:1px solid #cfdcec;border-radius:4px;padding:2px 11px}

/* ---------- 视频横滑 ---------- */
.v-scroll{display:flex;gap:10px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.v-scroll::-webkit-scrollbar{display:none}
.v-card{flex:0 0 152px;display:flex;flex-direction:column}
.vc-cover{
  position:relative;width:100%;aspect-ratio:16/10;border-radius:5px;overflow:hidden;
  background:linear-gradient(135deg,#2f639e,#17365d);background-size:cover;background-position:center;
  display:flex;align-items:center;justify-content:center;
}
.vc-play{width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center}
.vc-play svg{width:12px;height:12px;color:var(--brand);margin-left:2px}
.vc-dur{
  position:absolute;right:5px;bottom:5px;font-size:10px;color:#fff;background:rgba(0,0,0,.6);
  border-radius:3px;padding:0 4px;font-variant-numeric:tabular-nums;
}
.vc-t{
  font-size:12.5px;color:var(--text);margin-top:6px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.vc-bar{height:2px;background:var(--line-2);border-radius:2px;margin-top:5px;overflow:hidden}
.vc-bar i{display:block;height:100%;background:var(--accent)}

/* ---------- 模考入口 ---------- */
.exam-cta{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:15px;margin-bottom:10px;display:flex;flex-direction:column;gap:12px;
}
.ec-txt b{font-size:14px;font-weight:600}
.ec-txt i{display:block;font-size:12px;font-style:normal;color:var(--text-3);margin-top:4px;line-height:1.6}
.ec-btn{width:100%;display:flex;align-items:center;justify-content:center}

/* ---------- 搜索页 ---------- */
.search-bar{display:flex;gap:8px;margin-bottom:10px}
.search-bar input{
  flex:1;min-width:0;height:38px;padding:0 13px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;font-size:13.5px;color:var(--text);outline:none;font-family:inherit;
  transition:border-color .15s,box-shadow .15s;
}
.search-bar input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,54,93,.08)}
.search-bar .btn{flex:0 0 auto;width:auto;height:38px;padding:0 20px;border-radius:var(--radius)}
.kw-tags{display:flex;flex-wrap:wrap;gap:8px}
.kw-tag{font-size:12.5px;padding:5px 13px;border-radius:20px;background:var(--brand-soft);color:var(--brand);border:1px solid #dde6f1}
.q-list{display:flex;flex-direction:column}
.qrow{display:flex;gap:10px;padding:11px 0;border-top:1px solid var(--line-2);cursor:pointer}
.qrow:first-child{border-top:0;padding-top:1px}
.qrow input[type=checkbox]{width:15px;height:15px;flex:0 0 auto;margin-top:3px;accent-color:var(--brand)}
.qbody{display:flex;flex-direction:column;gap:5px;min-width:0}
.qtext{font-size:13.5px;color:var(--text);line-height:1.55}
.qmeta{font-size:11.5px;color:var(--text-3);display:flex;align-items:center;gap:6px}
.empty .tip{font-size:12.5px;color:var(--text-3);margin-top:2px}

/* ---------- 弹层（公告详情） ---------- */
.mask{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:16px;background:rgba(16,36,61,.5)}
.mask.on{display:flex}
.modal{
  width:100%;max-width:430px;max-height:82vh;display:flex;flex-direction:column;
  background:#fff;border-radius:8px;box-shadow:0 18px 50px rgba(16,36,61,.32);
}
.modal-head{padding:13px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px}
.modal-head h3{font-size:14px;font-weight:600;color:var(--text)}
.modal .close{background:none;border:0;padding:0;font-size:20px;line-height:1;color:var(--text-3);cursor:pointer;font-family:inherit}
.modal-body{padding:15px 16px;overflow-y:auto}
.modal-foot{padding:11px 16px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}
.notice-body{font-size:13.5px;color:var(--text-2);line-height:1.85;white-space:pre-wrap;word-break:break-word}

/* ---------- 宽屏 ---------- */
@media (min-width:760px){
  .home-top{margin:-12px -12px 14px;padding:20px 22px 18px;border-radius:8px}
  .grid-nav{grid-template-columns:repeat(8,1fr)}
  .banner{aspect-ratio:3.4/1}
  .v-card{flex:0 0 186px}
  .ec-btn{width:auto;align-self:flex-start;padding-left:34px;padding-right:34px}
  .exam-cta{flex-direction:row;align-items:center;justify-content:space-between}
  .ec-txt{flex:1;min-width:0}
}
@media (max-width:360px){
  .gn-ico{width:36px;height:36px}
  .gn-ico svg{width:18px;height:18px}
  .gn-t{font-size:11px}
  .bn-ph b{font-size:15px}
}

/* 轮播装饰：右侧光晕与细线，避免文字左侧集中显得空 */
.bn-ph::after,.bn-mask::after{
  content:'';position:absolute;right:-46px;top:-52px;width:210px;height:210px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.13),rgba(255,255,255,0) 68%);
  pointer-events:none;
}
.bn-ph::before,.bn-mask::before{
  content:'';position:absolute;right:34px;bottom:-30px;width:120px;height:120px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);pointer-events:none;
}
.bn-ph,.bn-mask{position:absolute;overflow:hidden}

/* ---------- 桌面宽屏 ---------- */
@media (min-width:900px){
  .page{max-width:880px}
  .home-top{margin:-14px -18px 16px;padding:22px 26px 20px}
  .banner{aspect-ratio:3.8/1}
  .chap-row .go{width:auto;padding:0 16px}
}

/* ---------- 视频卡细节 ---------- */
.v-card:nth-child(2n) .vc-cover{background:linear-gradient(135deg,#1d4a7a,#123a63)}
.v-card:nth-child(3n) .vc-cover{background:linear-gradient(135deg,#2b5f92,#17406c)}
@media (min-width:900px){
  .v-scroll{overflow:visible}
  .v-card{flex:1 1 0;min-width:0}
  .vc-t{display:block;-webkit-line-clamp:unset;overflow:visible}
}