/*
 * cend-v2.css — C端子项目① Phase B(PC 站)v2 壳设计 token + 通用组件
 * 来源:设计总纲《中观国学升级UI.dc.html》「设计系统」+「PC 端·首页」节
 * 命名:全部类名 .zg- 前缀 + CSS 变量,禁止裸类名(防与老页 bootstrap 冲突)
 * 字体:不引 Google Fonts,字体栈仅用本地/系统字体 fallback
 * Task16 全站切壳前,本文件只在 v2 新页面(common/css_v2.html)引用,与老页 __COMMON__/css 并行不冲突
 */

/* ===== 设计 token(色值逐字对齐 .superpowers/sdd/global-constraints.md) ===== */
:root{
  --zg-primary:#B23A2E;      /* 朱红 主色 */
  --zg-primary-deep:#8F2C22; /* 深朱 hover/active */
  --zg-ink:#23201C;          /* 墨 正文/标题 */
  --zg-bg:#FFFDF8;           /* 底 页面背景/卡面 */
  --zg-face:#F5F1E8;         /* 面 宣纸底/次级背景 */
  --zg-line:#E6DDCC;         /* 线 一般边框 */
  --zg-line-2:#DDD5C6;       /* 线 次级边框 */
  --zg-muted:#8A8172;        /* 次文 说明文字 */
  --zg-gold:#B08842;         /* 赭金 强调/研修 */
  --zg-jade:#3C6E5E;         /* 松绿 免费标记 */

  /* 字体栈:不引 Google Fonts,系统 fallback */
  --zg-font-serif:'Noto Serif SC','Source Han Serif SC','STSong',serif;
  --zg-font-sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;

  /* PC 画布基准宽度(设计总纲 PC 首页定稿画布 1440px) */
  --zg-page-width:1440px;
  --zg-gutter:44px;
}

/* ===== 字体栈工具类 ===== */
.zg-serif{ font-family:var(--zg-font-serif); }
.zg-sans{ font-family:var(--zg-font-sans); }

/* ===== 基础重置(仅作用于 body.zg-page 之内,不污染老页面) ===== */
body.zg-page{
  margin:0;
  background:var(--zg-bg);
  color:var(--zg-ink);
  font-family:var(--zg-font-sans);
  -webkit-font-smoothing:antialiased;
}
body.zg-page *{ box-sizing:border-box; }
body.zg-page a{ text-decoration:none; color:inherit; }
body.zg-page ul,
body.zg-page ol{ margin:0; padding:0; list-style:none; }
body.zg-page h1,
body.zg-page h2,
body.zg-page h3,
body.zg-page h4{ margin:0; font-family:var(--zg-font-serif); font-weight:700; color:var(--zg-ink); }
body.zg-page img{ max-width:100%; display:block; }

/* ===== 布局容器(1440 画布 + 44px 边距,对齐设计总纲 header/hero/section 统一内边距) ===== */
.zg-container{
  width:100%;
  max-width:var(--zg-page-width);
  margin:0 auto;
  padding-left:var(--zg-gutter);
  padding-right:var(--zg-gutter);
}
.zg-section{ padding-top:44px; padding-bottom:44px; }
.zg-section__hd{
  display:flex;
  align-items:baseline;
  gap:14px;
  margin-bottom:22px;
}
.zg-section__hd .zg-section__bar{
  width:6px; height:20px; background:var(--zg-primary); flex:none;
}
.zg-section__hd h3{ font-size:22px; }

/* ===== 顶部导航 Header ===== */
.zg-header{
  height:72px;
  display:flex;
  align-items:center;
  background:var(--zg-bg);
  border-bottom:1px solid var(--zg-line);
}
.zg-header__inner{
  width:100%;
  max-width:var(--zg-page-width);
  margin:0 auto;
  padding:0 var(--zg-gutter);
  display:flex;
  align-items:center;
}
.zg-header__brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:none;
}
.zg-header__brand img{ width:40px; height:40px; object-fit:contain; }
.zg-header__brand-name{
  font-family:var(--zg-font-serif);
  font-weight:700;
  font-size:20px;
  color:var(--zg-ink);
  letter-spacing:.04em;
}
.zg-nav{
  display:flex;
  gap:30px;
  margin:0 auto;
  font-family:var(--zg-font-sans);
  font-size:15px;
  color:var(--zg-ink);
}
.zg-nav__link{ position:relative; padding-bottom:26px; color:var(--zg-ink); }
.zg-nav__link:hover{ color:var(--zg-primary); }
.zg-nav__link.is-active{ color:var(--zg-primary); font-weight:500; }
.zg-nav__link.is-active::after{
  content:'';
  position:absolute; left:0; right:0; bottom:0;
  height:2px; background:var(--zg-primary);
}
.zg-header__actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex:none;
}
.zg-header__search-icon{ width:19px; height:19px; color:var(--zg-muted); flex:none; }
.zg-header__login{ font-family:var(--zg-font-sans); font-size:14px; color:var(--zg-ink); }
.zg-header__login:hover{ color:var(--zg-primary); }
.zg-header__register{
  font-family:var(--zg-font-sans);
  font-size:14px;
  color:#fff;
  background:var(--zg-primary);
  padding:8px 18px;
  border-radius:3px;
}
.zg-header__register:hover{ background:var(--zg-primary-deep); }

/* 登录态:头像 + 下拉(照老壳 $_COOKIE.user_id 姿势) */
.zg-header__user{ position:relative; }
.zg-header__user-trigger{
  display:flex; align-items:center; gap:8px;
  font-family:var(--zg-font-sans); font-size:14px; color:var(--zg-ink);
}
.zg-header__user-trigger img{
  width:30px; height:30px; border-radius:50%; object-fit:cover;
}
.zg-header__user-menu{
  display:none;
  position:absolute; right:0; top:100%;
  min-width:160px;
  background:var(--zg-bg);
  border:1px solid var(--zg-line);
  border-radius:4px;
  box-shadow:0 16px 32px -20px rgba(35,32,28,.35);
  padding:6px 0;
  z-index:20;
}
.zg-header__user:hover .zg-header__user-menu{ display:block; }
.zg-header__user-menu a{
  display:block;
  padding:10px 16px;
  font-size:14px;
  color:var(--zg-ink);
}
.zg-header__user-menu a:hover{ background:var(--zg-face); color:var(--zg-primary); }

/* ===== 按钮 BUTTON ===== */
.zg-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:11px 22px;
  border-radius:3px;
  font-family:var(--zg-font-sans);
  font-size:14px;
  font-weight:500;
  border:1px solid transparent;
  cursor:pointer;
  background:none;
}
.zg-btn--primary{ background:var(--zg-primary); color:#fff; }
.zg-btn--primary:hover{ background:var(--zg-primary-deep); }
.zg-btn--outline{ background:#fff; color:var(--zg-primary); border-color:var(--zg-primary); }
.zg-btn--outline:hover{ background:var(--zg-face); }
.zg-btn--ghost{ background:#fff; color:var(--zg-muted); border-color:var(--zg-line-2); }
.zg-btn--ghost:hover{ color:var(--zg-ink); border-color:var(--zg-muted); }
.zg-btn--ink{ background:var(--zg-ink); color:#fff; }
.zg-btn--ink:hover{ background:#000; }
.zg-btn[disabled]{ opacity:.45; pointer-events:none; }

/* ===== 标签 TAG ===== */
.zg-tag{
  display:inline-flex;
  align-items:center;
  padding:6px 12px;
  background:var(--zg-face);
  color:var(--zg-muted);
  border:1px solid var(--zg-line);
  border-radius:999px;
  font-family:var(--zg-font-sans);
  font-size:12px;
}
.zg-tag--free{
  background:rgba(60,110,94,.1);
  color:var(--zg-jade);
  border-color:transparent;
}
.zg-tag--gold{
  background:rgba(176,136,66,.12);
  color:var(--zg-gold);
  border-color:transparent;
}

/* ===== 卡片 CARD(课程卡) ===== */
.zg-card{
  border:1px solid var(--zg-line);
  border-radius:6px;
  overflow:hidden;
  background:#fff;
  display:block;
}
.zg-card__cover{
  height:126px;
  background:linear-gradient(135deg,#efe4d0,#e0d1b6);
  display:grid;
  place-items:center;
  font-family:var(--zg-font-serif);
  font-size:34px;
  color:#bfae8e;
}
.zg-card__body{ padding:14px 15px; }
.zg-card__title{
  font-family:var(--zg-font-serif);
  font-weight:600;
  font-size:15px;
  color:var(--zg-ink);
  line-height:1.5;
  height:45px;
  overflow:hidden;
}
.zg-card__meta{ font-size:12px; color:var(--zg-muted); margin-top:8px; }
.zg-card__price{
  margin-top:8px;
  font-weight:700;
  font-size:16px;
  font-family:var(--zg-font-sans);
  color:var(--zg-primary);
}
.zg-card__price--free{ color:var(--zg-jade); }

/* ===== 面包屑 BREADCRUMB ===== */
.zg-breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--zg-font-sans);
  font-size:13px;
  color:var(--zg-muted);
  padding:16px 0;
}
.zg-breadcrumb a{ color:var(--zg-muted); }
.zg-breadcrumb a:hover{ color:var(--zg-primary); }
.zg-breadcrumb__sep{ color:var(--zg-line-2); }
.zg-breadcrumb__current{ color:var(--zg-ink); }

/* ===== 11 种课时活动类型图标(与 CourseService::ACTIVITY_TYPES 逐个对应) ===== */
.zg-icon{
  width:22px;
  height:22px;
  display:inline-block;
  vertical-align:middle;
  fill:none;
  stroke:currentColor;
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
  color:var(--zg-primary);
}
.zg-icon--sm{ width:16px; height:16px; }
.zg-icon--lg{ width:26px; height:26px; }
.zg-icon-tile{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  padding:12px 4px;
  border:1px solid var(--zg-line);
  border-radius:4px;
  background:var(--zg-bg);
}
.zg-icon-tile__label{ font-size:11px; color:var(--zg-muted); font-family:var(--zg-font-sans); }

/* ===== Hero(1b 朱红首屏定稿,T9 首页实装) ===== */
.zg-hero{
  position:relative;
  padding:76px var(--zg-gutter) 68px;
  background:linear-gradient(150deg,var(--zg-primary-deep) 0%,var(--zg-primary) 55%,#a3332a 100%);
  overflow:hidden;
  color:#fff;
}
.zg-hero__inner{ position:relative; z-index:1; max-width:640px; }
.zg-hero__eyebrow{ font-family:var(--zg-font-sans); font-size:13px; letter-spacing:.34em; color:rgba(255,255,255,.72); margin-bottom:18px; }
.zg-hero__title{ font-family:var(--zg-font-serif); font-weight:900; font-size:56px; line-height:1.18; color:#fff; letter-spacing:.05em; margin:0; }
.zg-hero__desc{ margin:20px 0 0; font-family:var(--zg-font-serif); font-size:17px; line-height:1.9; color:rgba(255,255,255,.85); max-width:520px; }

/* 首页 Hero 专属:装饰圆环 + 搜索条 + 统计数字(设计稿 1b 首屏) */
.zg-hero--home::before{
  content:'';
  position:absolute; inset:0;
  background:repeating-linear-gradient(0deg,transparent 0 39px,rgba(255,255,255,.04) 39px 40px);
}
.zg-hero__ring{
  position:absolute; top:50%; transform:translateY(-50%);
  border-radius:50%; border:1px solid rgba(255,255,255,.16);
  display:grid; place-items:center;
}
.zg-hero__ring--outer{ right:-40px; width:420px; height:420px; }
.zg-hero__ring--inner{ right:40px; width:280px; height:280px; border-color:rgba(255,255,255,.2); }
.zg-hero__glyph{ font-family:var(--zg-font-serif); font-size:180px; color:rgba(255,255,255,.1); line-height:1; }
.zg-hero__search{
  display:flex; align-items:center;
  margin:34px 0 0; max-width:560px; height:54px;
  background:#fff; border-radius:6px; padding:0 8px 0 22px;
  box-shadow:0 20px 40px -20px rgba(0,0,0,.4);
}
.zg-hero__search-icon{ width:20px; height:20px; flex:none; }
.zg-hero__search-input{
  flex:1; margin-left:14px; border:none; outline:none; background:none;
  font-family:var(--zg-font-sans); font-size:15px; color:var(--zg-ink);
}
.zg-hero__search-input::placeholder{ color:#a89e8c; }
.zg-hero__search-btn{
  height:38px; padding:0 24px; background:var(--zg-primary); color:#fff;
  border:none; border-radius:4px; font-family:var(--zg-font-sans); font-size:15px; cursor:pointer;
}
.zg-hero__search-btn:hover{ background:var(--zg-primary-deep); }
.zg-hero__stats{ display:flex; gap:40px; margin-top:34px; font-family:var(--zg-font-sans); flex-wrap:wrap; }
.zg-hero__stat-num{ font-family:var(--zg-font-serif); font-weight:700; font-size:26px; color:#fff; }
.zg-hero__stat-label{ font-size:12px; color:rgba(255,255,255,.65); margin-top:2px; }

/* ===== 首页 · 学科入口 ===== */
.zg-section__sub{ font-family:var(--zg-font-sans); font-size:12px; color:#a89e8c; letter-spacing:.2em; }
.zg-section__hd--between{ display:flex; align-items:center; justify-content:space-between; }
.zg-section__hd-l{ display:flex; align-items:baseline; gap:14px; }
.zg-section__more{ font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); }
.zg-section__more:hover{ color:var(--zg-primary); }
.zg-section__hd--gold .zg-section__bar--gold{ background:var(--zg-gold); }

.zg-subject-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:14px;
}
.zg-subject-card{
  display:flex; align-items:center; gap:14px;
  border:1px solid var(--zg-line); border-radius:5px; padding:20px;
  background:var(--zg-bg);
}
.zg-subject-card:hover{ border-color:var(--zg-primary); }
.zg-subject-icon{
  width:44px; height:44px; flex:none;
  border:1px solid #e0bfb0; border-radius:50%;
  display:grid; place-items:center;
  font-family:var(--zg-font-serif); font-size:22px; color:var(--zg-primary);
}
.zg-subject-body{ display:flex; flex-direction:column; }
.zg-subject-name{ font-family:var(--zg-font-serif); font-weight:600; font-size:16px; color:var(--zg-ink); }
.zg-subject-count{ font-size:12px; color:var(--zg-muted); margin-top:3px; }

/* ===== 首页 · 精选课程卡片网格 ===== */
.zg-card-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.zg-card-grid .zg-card__cover{ background-size:cover; background-position:center; }

/* ===== 首页 · 线下研修 + 最新资讯(两栏) ===== */
.zg-split{ display:grid; grid-template-columns:1.4fr 1fr; gap:36px; }
.zg-workshop-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.zg-workshop-card{
  display:block; border:1px solid var(--zg-line); border-radius:6px; padding:16px; background:var(--zg-bg);
}
.zg-workshop-card:hover{ border-color:var(--zg-gold); }
.zg-workshop-title{ font-family:var(--zg-font-serif); font-weight:600; font-size:15px; color:var(--zg-ink); line-height:1.5; }
.zg-workshop-meta{ font-size:12px; color:var(--zg-muted); margin-top:8px; }
.zg-news-list{ display:flex; flex-direction:column; gap:12px; }
.zg-news-item{ display:flex; gap:10px; font-family:var(--zg-font-sans); font-size:14px; color:var(--zg-ink); }
.zg-news-item:hover .zg-news-title{ color:var(--zg-primary); }
.zg-news-date{ color:var(--zg-gold); font-size:12px; flex:none; }

/* ===== 空态(无写死假数据,真实查询为空时的诚实占位) ===== */
.zg-empty{
  padding:36px; text-align:center;
  border:1px dashed var(--zg-line-2); border-radius:6px;
  color:var(--zg-muted); font-family:var(--zg-font-sans); font-size:14px;
  background:var(--zg-face);
}

/* ===== 页脚 FOOTER ===== */
.zg-footer{
  background:var(--zg-ink);
  padding:30px 0;
}
.zg-footer__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.zg-footer__meta{
  font-family:var(--zg-font-sans);
  font-size:12px;
  color:rgba(255,255,255,.6);
  line-height:1.9;
}
.zg-footer__links{
  display:flex;
  gap:34px;
  font-family:var(--zg-font-sans);
  font-size:13px;
  color:rgba(255,255,255,.8);
}
.zg-footer__links a:hover{ color:#fff; }

@media (max-width:1024px){
  .zg-nav{ display:none; }
  .zg-hero__title{ font-size:38px; }
  .zg-footer__inner{ flex-direction:column; align-items:flex-start; gap:14px; }
  .zg-subject-grid{ grid-template-columns:repeat(2,1fr); }
  .zg-card-grid{ grid-template-columns:repeat(2,1fr); }
  .zg-split{ grid-template-columns:1fr; }
  .zg-hero__ring--outer,
  .zg-hero__ring--inner{ display:none; }
}

@media (max-width:640px){
  .zg-subject-grid{ grid-template-columns:1fr; }
  .zg-card-grid{ grid-template-columns:1fr; }
  .zg-workshop-grid{ grid-template-columns:1fr; }
  .zg-hero__title{ font-size:28px; }
  .zg-hero__stats{ gap:24px; }
}

/* =====================================================================
 * 登录 / 注册 / 找回密码(Task10 · PC-07/PC-30/PC-31)
 * 来源:PC-购买与账户.dc.html「PC-07 登录/注册」+ PC-帮助与承接.dc.html「PC-30 找回」「PC-31 注册(分步)」
 * 独立整页(不嵌 zg-header 全站导航)，u 应用页面直接 <link> 本文件 + body.zg-page
 * ===================================================================== */
.zg-auth-page{
  min-height:100vh;
  display:flex;
  background:var(--zg-face);
}

/* PC-07 登录：左品牌右表单 两栏铺满视口 */
.zg-auth-split{
  width:100%;
  min-height:100vh;
  display:grid;
  grid-template-columns:1fr 480px;
}
.zg-auth-brand{
  position:relative;
  overflow:hidden;
  padding:64px;
  background:linear-gradient(150deg,var(--zg-primary-deep),var(--zg-primary));
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.zg-auth-brand__ring-o{ position:absolute; left:50%; top:52%; transform:translate(-50%,-50%); width:440px; height:440px; border-radius:50%; border:1px solid rgba(255,255,255,.14); }
.zg-auth-brand__ring-i{ position:absolute; left:50%; top:52%; transform:translate(-50%,-50%); width:300px; height:300px; border-radius:50%; border:1px solid rgba(255,255,255,.2); display:grid; place-items:center; }
.zg-auth-brand__glyph{ font-family:var(--zg-font-serif); font-size:200px; color:rgba(255,255,255,.12); }
.zg-auth-brand__body{ position:relative; z-index:1; }
.zg-auth-brand__logo{ display:flex; align-items:center; gap:12px; margin-bottom:28px; }
.zg-auth-brand__logo img{ width:40px; height:40px; object-fit:contain; }
.zg-auth-brand__logo span{ font-family:var(--zg-font-serif); font-weight:700; font-size:22px; color:#fff; letter-spacing:.06em; }
.zg-auth-brand__title{ font-family:var(--zg-font-serif); font-weight:900; font-size:40px; color:#fff; letter-spacing:.06em; line-height:1.3; margin:0; }
.zg-auth-brand__desc{ font-family:var(--zg-font-sans); font-size:13px; color:rgba(255,255,255,.7); margin-top:20px; letter-spacing:.1em; }

.zg-auth-form{
  background:var(--zg-bg);
  padding:56px 52px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.zg-auth-tabs{ display:flex; gap:28px; margin-bottom:34px; font-family:var(--zg-font-serif); font-size:19px; }
.zg-auth-tab{ color:var(--zg-muted); padding-bottom:10px; border-bottom:2px solid transparent; cursor:pointer; background:none; border-left:none; border-right:none; border-top:none; font-family:inherit; font-size:inherit; }
.zg-auth-tab.is-active{ color:var(--zg-ink); font-weight:700; border-bottom-color:var(--zg-primary); }
.zg-auth-panel{ display:none; }
.zg-auth-panel.is-active{ display:block; }

.zg-auth-label{ font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); margin-bottom:8px; }
.zg-auth-field{
  height:48px; border:1px solid var(--zg-line-2); border-radius:6px;
  display:flex; align-items:center; padding:0 16px; margin-bottom:18px; background:#fff;
}
.zg-auth-field input{
  flex:1; border:none; outline:none; background:none;
  font-family:var(--zg-font-sans); font-size:15px; color:var(--zg-ink);
}
.zg-auth-field input::placeholder{ color:#c9c0ae; }
.zg-auth-code-row{ display:flex; gap:12px; margin-bottom:26px; }
.zg-auth-code-row .zg-auth-field{ flex:1; margin-bottom:0; }
.zg-auth-code-btn{
  height:48px; padding:0 20px; border:1px solid var(--zg-primary); color:var(--zg-primary);
  background:#fff; border-radius:6px; font-family:var(--zg-font-sans); font-size:14px;
  white-space:nowrap; cursor:pointer;
}
.zg-auth-code-btn:hover{ background:var(--zg-face); }
.zg-auth-code-btn:disabled{ color:var(--zg-line-2); border-color:var(--zg-line-2); cursor:not-allowed; background:#fff; }

.zg-auth-submit{
  height:50px; width:100%; background:var(--zg-primary); color:#fff; border:none; border-radius:6px;
  font-family:var(--zg-font-sans); font-size:16px; font-weight:500; cursor:pointer;
}
.zg-auth-submit:hover{ background:var(--zg-primary-deep); }
.zg-auth-submit:disabled{ background:var(--zg-line-2); cursor:not-allowed; }

.zg-auth-divider{ display:flex; align-items:center; gap:14px; margin:28px 0; color:#c9c0ae; font-family:var(--zg-font-sans); font-size:12px; }
.zg-auth-divider::before,
.zg-auth-divider::after{ content:''; flex:1; height:1px; background:#ede6d7; }
.zg-auth-social{ display:flex; justify-content:center; gap:28px; }
.zg-auth-social a{ display:flex; flex-direction:column; align-items:center; gap:8px; font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); }
.zg-auth-social__icon{ width:46px; height:46px; border-radius:50%; border:1px solid var(--zg-line); display:grid; place-items:center; }
.zg-auth-social__icon span{ width:26px; height:26px; border-radius:6px; background:#1aad6e; display:grid; place-items:center; color:#fff; font-size:13px; }

.zg-auth-agree{ margin-top:28px; text-align:center; font-family:var(--zg-font-sans); font-size:12px; color:#a89e8c; }
.zg-auth-links{ margin-top:18px; text-align:center; font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); }
.zg-auth-links a{ color:var(--zg-primary); }
.zg-auth-foot{ margin-top:16px; text-align:center; font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); }
.zg-auth-foot a{ color:var(--zg-primary); }

.zg-auth-error{
  display:none; margin-bottom:16px; padding:10px 14px; border-radius:6px;
  background:rgba(178,58,46,.08); border:1px solid rgba(178,58,46,.3);
  color:var(--zg-primary); font-family:var(--zg-font-sans); font-size:13px;
}
.zg-auth-error.is-show{ display:block; }

/* PC-30 找回 / PC-31 注册(分步)：居中卡片 整页 */
.zg-auth-center{
  width:100%; min-height:100vh;
  display:grid; place-items:center; padding:50px;
  background:radial-gradient(circle at 50% 0%, #f8f3e8, var(--zg-face));
}
.zg-auth-card{
  width:460px; background:var(--zg-bg); border:1px solid var(--zg-line);
  border-radius:12px; padding:44px 40px;
  box-shadow:0 30px 60px -40px rgba(60,45,30,.4);
}
.zg-auth-card__brand{ display:flex; align-items:center; gap:10px; margin-bottom:8px; }
.zg-auth-card__brand img{ width:34px; height:34px; object-fit:contain; }
.zg-auth-card__brand span{ font-family:var(--zg-font-serif); font-weight:700; font-size:18px; color:var(--zg-ink); }
.zg-auth-card h2{ margin:14px 0 4px; font-family:var(--zg-font-serif); font-weight:700; font-size:24px; color:var(--zg-ink); }
.zg-auth-card p{ margin:0 0 26px; font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); }

/* PC-31 步骤条 */
.zg-auth-steps{ display:flex; align-items:center; margin-bottom:30px; }
.zg-auth-step{ display:flex; align-items:center; gap:8px; }
.zg-auth-step__num{
  width:26px; height:26px; border-radius:50%; border:1px solid var(--zg-line-2); color:#a89e8c;
  display:grid; place-items:center; font-family:var(--zg-font-sans); font-size:13px; flex:none;
}
.zg-auth-step__label{ font-family:var(--zg-font-sans); font-size:13px; color:#a89e8c; white-space:nowrap; }
.zg-auth-step.is-active .zg-auth-step__num{ background:var(--zg-primary); border-color:var(--zg-primary); color:#fff; }
.zg-auth-step.is-active .zg-auth-step__label{ color:var(--zg-ink); }
.zg-auth-step.is-done .zg-auth-step__num{ background:var(--zg-jade); border-color:var(--zg-jade); color:#fff; }
.zg-auth-step-line{ flex:1; height:1px; background:var(--zg-line); margin:0 12px; }

.zg-auth-stepview{ display:none; }
.zg-auth-stepview.is-active{ display:block; }

.zg-auth-checkbox{ display:flex; align-items:flex-start; gap:8px; margin-bottom:22px; font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); line-height:1.6; }
.zg-auth-checkbox input{ margin-top:3px; flex:none; width:16px; height:16px; accent-color:var(--zg-primary); }

.zg-auth-done{ text-align:center; padding:20px 0; }
.zg-auth-done__icon{
  width:64px; height:64px; border-radius:50%; background:rgba(60,110,94,.1);
  display:grid; place-items:center; margin:0 auto 18px;
}
.zg-auth-done h3{ font-family:var(--zg-font-serif); font-size:20px; color:var(--zg-ink); margin:0 0 8px; }
.zg-auth-done p{ font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); margin:0 0 26px; }

@media (max-width:1024px){
  .zg-auth-split{ grid-template-columns:1fr; }
  .zg-auth-brand{ display:none; }
}

/* =====================================================================
 * 课程详情 / 课程总览(Task11 · PC-01/PC-02)
 * 来源:PC-课程与学习.dc.html「PC-01 课程详情」「PC-02 课程总览」内联样式逐值提取
 * PC-02 视觉语言(216px 侧栏+主区/配色/间距)保留,内容改为单课程完整目录树(见 task-11-report.md 说明)
 * ===================================================================== */

/* ----- PC-01 详情头 ----- */
.zg-course-head{ display:grid; grid-template-columns:420px 1fr; gap:34px; padding:22px 0 30px; }
.zg-course-cover{
  position:relative; height:264px; border-radius:8px; overflow:hidden;
  background:linear-gradient(135deg,#efe4d0,#d8c39c);
  display:grid; place-items:center; border:1px solid var(--zg-line);
}
.zg-course-cover img{ width:100%; height:100%; object-fit:cover; }
.zg-course-cover__glyph{ font-family:var(--zg-font-serif); font-size:120px; color:rgba(178,58,46,.2); }
.zg-course-cover__try{
  position:absolute; left:0; top:16px; background:var(--zg-primary); color:#fff;
  font-family:var(--zg-font-sans); font-size:12px; padding:5px 14px; border-radius:0 3px 3px 0;
}
.zg-course-cover__meta{
  position:absolute; right:14px; bottom:14px; background:rgba(35,32,28,.7); color:#fff;
  font-family:var(--zg-font-sans); font-size:12px; padding:4px 10px; border-radius:3px;
}
.zg-course-info__tags{ display:flex; gap:8px; margin-bottom:14px; }
.zg-course-info__title{ margin:0; font-family:var(--zg-font-serif); font-weight:700; font-size:30px; color:var(--zg-ink); line-height:1.4; }
.zg-course-info__desc{ margin:10px 0 0; font-family:var(--zg-font-serif); font-size:15px; color:#5b554c; line-height:1.8; }
.zg-course-teacher{ display:flex; align-items:center; gap:12px; margin-top:18px; }
.zg-course-teacher__avatar{ width:40px; height:40px; border-radius:50%; background:linear-gradient(135deg,#c9b48a,#a98f5f); object-fit:cover; flex:none; }
.zg-course-teacher__name{ font-family:var(--zg-font-serif); font-weight:600; font-size:15px; color:var(--zg-ink); }
.zg-course-teacher__title{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); }
.zg-course-stats{ display:flex; gap:30px; margin-top:20px; font-family:var(--zg-font-sans); }
.zg-course-stats__num{ font-family:var(--zg-font-serif); font-weight:700; font-size:20px; color:var(--zg-ink); }
.zg-course-stats__label{ font-size:12px; color:var(--zg-muted); margin-left:4px; }
.zg-course-buybar{ display:flex; align-items:center; gap:16px; margin-top:24px; padding-top:22px; border-top:1px solid #ede6d7; }
.zg-course-price{ display:flex; align-items:baseline; gap:8px; }
.zg-course-price__now{ font-family:var(--zg-font-sans); font-weight:700; font-size:32px; color:var(--zg-primary); }
.zg-course-price__origin{ font-family:var(--zg-font-sans); font-size:14px; color:#a89e8c; text-decoration:line-through; }
.zg-course-price__free{ font-family:var(--zg-font-sans); font-weight:700; font-size:26px; color:var(--zg-jade); }
.zg-course-buybar .zg-btn{ margin-left:0; }
.zg-course-buybar .zg-btn--buy{ margin-left:auto; padding-left:40px; padding-right:40px; }

/* ----- Tab + 目录/简介/老师/评价 ----- */
.zg-course-tabs{ display:flex; gap:30px; border-bottom:1px solid #ede6d7; margin-bottom:22px; font-family:var(--zg-font-sans); font-size:16px; }
.zg-course-tab{ color:var(--zg-muted); padding-bottom:14px; }
.zg-course-tab.is-active{ color:var(--zg-primary); font-weight:500; border-bottom:2px solid var(--zg-primary); }
.zg-course-body{ padding:0 0 40px; display:grid; grid-template-columns:1fr 320px; gap:30px; }

/* ----- 目录树(_catalog.html,show_v2 预览 2 章 / overview 全树 共用同一真源) ----- */
.zg-catalog__chapter{ border:1px solid var(--zg-line); border-radius:8px; overflow:hidden; background:#fff; margin-bottom:14px; }
.zg-catalog__chapter-hd{ padding:14px 18px; background:var(--zg-face); border-bottom:1px solid var(--zg-line); font-family:var(--zg-font-serif); font-weight:600; font-size:15px; color:var(--zg-ink); }
.zg-catalog__chapter-hd small{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); font-weight:400; margin-left:8px; }
.zg-catalog__row{ display:flex; align-items:center; gap:14px; padding:14px 18px; border-bottom:1px solid #f0eadd; }
.zg-catalog__row:last-child{ border-bottom:none; }
.zg-catalog__row-title{ font-family:var(--zg-font-sans); font-size:14px; color:var(--zg-ink); flex:1; }
.zg-catalog__row.is-locked .zg-catalog__row-title{ color:var(--zg-muted); }
.zg-catalog__row.is-locked .zg-icon{ color:#a89e8c; }
.zg-catalog__duration{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); flex:none; }
.zg-catalog__lock{ width:15px; height:15px; color:#a89e8c; flex:none; }
.zg-catalog__badge{ font-family:var(--zg-font-sans); font-size:12px; padding:2px 8px; border-radius:3px; flex:none; }
.zg-catalog__badge--free{ color:var(--zg-jade); border:1px solid rgba(60,110,94,.4); }
.zg-catalog__badge--todo{ color:var(--zg-muted); border:1px solid var(--zg-line-2); }
.zg-catalog__badge--doing{ color:var(--zg-primary); border:1px solid rgba(178,58,46,.35); background:rgba(178,58,46,.06); }
.zg-catalog__badge--finish{ color:#fff; background:var(--zg-jade); border:1px solid var(--zg-jade); }
.zg-catalog__more{ display:block; text-align:center; padding:14px; font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-primary); border:1px dashed var(--zg-line-2); border-radius:8px; }

/* ----- 侧栏卡片(授课老师/会员权益/猜你想学) ----- */
.zg-side-card{ border:1px solid var(--zg-line); border-radius:8px; background:#fff; padding:18px; }
.zg-side-card + .zg-side-card{ margin-top:16px; }
.zg-side-card__hd{ font-family:var(--zg-font-sans); font-size:12px; color:#a89e8c; letter-spacing:.16em; margin-bottom:14px; }
.zg-side-teacher{ display:flex; gap:12px; align-items:center; }
.zg-side-teacher__avatar{ width:48px; height:48px; border-radius:50%; background:linear-gradient(135deg,#c9b48a,#a98f5f); object-fit:cover; flex:none; }
.zg-side-teacher__name{ font-family:var(--zg-font-serif); font-weight:600; font-size:16px; color:var(--zg-ink); }
.zg-side-teacher__meta{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); margin-top:2px; }
.zg-side-member{ border:1px solid #e0bfb0; border-radius:8px; background:linear-gradient(135deg,#fff,#faf1ea); padding:18px; margin-top:16px; }
.zg-side-member__title{ font-family:var(--zg-font-serif); font-weight:600; font-size:15px; color:var(--zg-primary); }
.zg-side-member__desc{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); margin-top:6px; line-height:1.7; }
.zg-side-member__cta{ margin-top:12px; text-align:center; padding:9px; border:1px solid var(--zg-primary); color:var(--zg-primary); border-radius:4px; font-family:var(--zg-font-sans); font-size:13px; }
.zg-suggest-list{ display:flex; flex-direction:column; gap:14px; }
.zg-suggest-item{ display:flex; gap:10px; }
.zg-suggest-item__cover{ width:52px; height:38px; border-radius:4px; background:linear-gradient(135deg,#efe4d0,#d8c39c); flex:none; }
.zg-suggest-item__title{ font-family:var(--zg-font-serif); font-size:13px; color:var(--zg-ink); line-height:1.4; }
.zg-suggest-item__price{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-primary); margin-top:4px; }
.zg-suggest-item__price--free{ color:var(--zg-jade); }

/* ----- PC-02 课程总览(单课程完整目录树):216px 侧栏(章节导航)+ 主区(_catalog.html 全树) ----- */
.zg-ov-layout{ display:grid; grid-template-columns:216px 1fr; }
.zg-ov-side{ border-right:1px solid #ede6d7; padding:22px 0; background:var(--zg-bg); }
.zg-ov-side__hd{ font-family:var(--zg-font-sans); font-size:11px; font-weight:700; letter-spacing:.2em; color:#a89e8c; padding:0 24px 12px; }
.zg-ov-side__item{ display:flex; align-items:center; padding:11px 24px; font-family:var(--zg-font-serif); font-size:15px; color:#4a453d; }
.zg-ov-side__item.is-active{ background:rgba(178,58,46,.07); border-left:3px solid var(--zg-primary); color:var(--zg-primary); }
.zg-ov-side__item span{ margin-left:auto; font-family:var(--zg-font-sans); font-size:12px; color:#b7ab92; }
.zg-ov-main{ padding:24px 32px; }
.zg-ov-summary{ display:flex; align-items:center; gap:20px; padding:18px 22px; border:1px solid var(--zg-line); border-radius:8px; background:#fff; margin-bottom:22px; }
.zg-ov-summary__cover{ width:64px; height:64px; border-radius:6px; background:linear-gradient(135deg,#efe4d0,#d8c39c); flex:none; }
.zg-ov-summary__title{ font-family:var(--zg-font-serif); font-weight:700; font-size:18px; color:var(--zg-ink); }
.zg-ov-summary__sub{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); margin-top:4px; }
.zg-ov-summary__progress{ margin-left:auto; text-align:right; }
.zg-ov-summary__percent{ font-family:var(--zg-font-serif); font-weight:700; font-size:22px; color:var(--zg-primary); }
.zg-ov-summary__percent-label{ font-family:var(--zg-font-sans); font-size:11px; color:var(--zg-muted); }

/* ----- PC-03/PC-35 课时学习页(Task12):暗色播放器壳,左内容右目录 ----- */
.zg-learn-shell{ width:100%; max-width:var(--zg-page-width); margin:24px auto 60px; background:#1a1815; border:1px solid #cfc6b4; border-radius:10px; overflow:hidden; box-shadow:0 40px 80px -46px rgba(60,45,30,.4); }
.zg-learn-topbar{ height:56px; display:flex; align-items:center; padding:0 28px; background:var(--zg-ink); border-bottom:1px solid rgba(255,255,255,.08); }
.zg-learn-topbar__back{ font-family:var(--zg-font-sans); font-size:14px; color:rgba(255,255,255,.7); flex:none; }
.zg-learn-topbar__back:hover{ color:#fff; }
.zg-learn-topbar__title{ font-family:var(--zg-font-serif); font-weight:600; font-size:16px; color:#fff; margin-left:20px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.zg-learn-topbar__progress{ margin-left:auto; display:flex; align-items:center; gap:16px; font-family:var(--zg-font-sans); font-size:13px; color:rgba(255,255,255,.6); flex:none; }
.zg-learn-topbar__bar{ width:120px; height:6px; background:rgba(255,255,255,.14); border-radius:3px; overflow:hidden; }
.zg-learn-topbar__bar span{ display:block; height:100%; background:var(--zg-primary); }

.zg-learn-body{ display:grid; grid-template-columns:1fr 360px; }
.zg-learn-main{ background:#1a1815; min-width:0; }

/* 播放器区(video/audio):16:9 暗底容器,真实 aliplayer 挂载于 #ali_player;playAuth 缺失时占位提示不白屏 */
.zg-learn-player{ position:relative; width:100%; aspect-ratio:16/9; background:radial-gradient(circle at 50% 42%,#2a2620,#131110); }
.zg-learn-player__empty{ position:absolute; inset:0; display:flex; align-items:center; justify-content:center; color:#bbb; font-family:var(--zg-font-sans); font-size:14px; text-align:center; padding:0 30px; }

.zg-learn-info{ padding:22px 28px; background:var(--zg-bg); }
.zg-learn-info__title{ margin:0; font-family:var(--zg-font-serif); font-weight:700; font-size:22px; color:var(--zg-ink); }
.zg-learn-tabs{ display:flex; gap:28px; margin-top:18px; border-bottom:1px solid #ede6d7; font-family:var(--zg-font-sans); font-size:15px; }
.zg-learn-tabs span{ padding-bottom:12px; color:var(--zg-muted); display:inline-block; }
.zg-learn-tabs span.is-active{ color:var(--zg-primary); font-weight:500; border-bottom:2px solid var(--zg-primary); }
.zg-learn-intro{ margin:18px 0 0; font-family:var(--zg-font-serif); font-size:15px; line-height:1.9; color:#5b554c; }
.zg-learn-actions{ display:flex; align-items:center; gap:12px; margin-top:24px; }
.zg-learn-actions .zg-btn{ padding:10px 20px; }
.zg-learn-actions .zg-btn[disabled],.zg-learn-actions .zg-btn.is-disabled{ opacity:.45; pointer-events:none; }

/* 图文课时(PC-35):亮底整版正文,替代播放器区 */
.zg-learn-article{ background:var(--zg-bg); padding:40px 56px; }
.zg-learn-article__tag{ display:inline-flex; align-items:center; gap:6px; font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-primary); background:rgba(178,58,46,.09); padding:4px 12px; border-radius:12px; margin-bottom:18px; }
.zg-learn-article__title{ margin:0; font-family:var(--zg-font-serif); font-weight:700; font-size:30px; color:var(--zg-ink); line-height:1.5; max-width:660px; }
.zg-learn-article__meta{ font-family:var(--zg-font-sans); font-size:13px; color:#a89e8c; margin:12px 0 26px; }
.zg-learn-article__body{ font-family:var(--zg-font-serif); font-size:16.5px; line-height:2.2; color:#3a352d; max-width:680px; }
.zg-learn-article__body img{ max-width:100%; height:auto; border-radius:12px; }
.zg-learn-article__body p{ margin:0 0 20px; }
.zg-learn-article__end{ height:1px; }

/* doc/ppt 预览 + download 资料列表 + testpaper/homework/live/exercise 入口卡(共用同一亮底容器) */
.zg-learn-doc{ background:var(--zg-bg); padding:40px 56px; }
.zg-learn-doc__frame{ width:100%; aspect-ratio:16/10; border:1px solid var(--zg-line); border-radius:8px; background:#fff; }
.zg-learn-doc__cover{ width:100%; aspect-ratio:16/9; border-radius:8px; background:linear-gradient(135deg,#efe4d0,#d8c39c) center/cover; margin-bottom:16px; }
.zg-learn-filelist{ display:flex; flex-direction:column; gap:10px; margin-top:18px; }
.zg-learn-filerow{ display:flex; align-items:center; gap:12px; padding:14px 18px; border:1px solid var(--zg-line); border-radius:8px; background:#fff; }
.zg-learn-filerow__name{ font-family:var(--zg-font-sans); font-size:14px; color:var(--zg-ink); flex:1; }
.zg-learn-filerow__size{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); }
.zg-learn-entrycard{ margin-top:8px; border:1px solid var(--zg-line); border-radius:10px; background:#fff; padding:34px; text-align:center; }
.zg-learn-entrycard__title{ font-family:var(--zg-font-serif); font-weight:700; font-size:19px; color:var(--zg-ink); margin-bottom:10px; }
.zg-learn-entrycard__desc{ font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); margin-bottom:20px; }

/* 右侧目录侧栏:与 PC-01/PC-02 白底目录同一份 course/_catalog.html 片段,此处套暗色重皮(单一 HTML 真源,CSS 按上下文换肤) */
.zg-learn-side{ background:#211e1a; border-left:1px solid rgba(255,255,255,.06); max-height:calc(100vh - 56px); overflow-y:auto; }
.zg-learn-side__tabs{ display:flex; padding:14px 20px; gap:20px; border-bottom:1px solid rgba(255,255,255,.08); font-family:var(--zg-font-sans); font-size:14px; }
.zg-learn-side__tabs span{ color:rgba(255,255,255,.4); }
.zg-learn-side__tabs span.is-active{ color:#fff; font-weight:500; }
.zg-learn-side__body{ padding:14px 20px; }
.zg-learn-side .zg-catalog__chapter{ background:transparent; border:none; border-radius:0; margin-bottom:0; }
.zg-learn-side .zg-catalog__chapter-hd{ background:transparent; border-bottom:none; padding:10px 0 8px; font-family:var(--zg-font-serif); font-size:14px; color:rgba(255,255,255,.85); }
.zg-learn-side .zg-catalog__chapter-hd small{ color:rgba(255,255,255,.35); }
.zg-learn-side .zg-catalog__row{ border-bottom:none; border-radius:6px; padding:11px 12px; margin-bottom:6px; }
.zg-learn-side .zg-catalog__row-title{ color:rgba(255,255,255,.7); }
.zg-learn-side .zg-catalog__row.is-locked .zg-catalog__row-title{ color:rgba(255,255,255,.35); }
.zg-learn-side .zg-catalog__row.is-locked .zg-icon{ color:rgba(255,255,255,.3); }
.zg-learn-side .zg-catalog__row .zg-icon{ color:rgba(255,255,255,.55); }
.zg-learn-side .zg-catalog__duration{ color:rgba(255,255,255,.4); }
.zg-learn-side .zg-catalog__lock{ color:rgba(255,255,255,.35); }
.zg-learn-side .zg-catalog__row.is-current{ background:rgba(178,58,46,.22); }
.zg-learn-side .zg-catalog__row.is-current .zg-catalog__row-title{ color:#fff; }
.zg-learn-side .zg-catalog__row.is-current .zg-icon{ color:#fff; }
.zg-learn-side .zg-catalog__badge--finish{ background:var(--zg-jade); border-color:var(--zg-jade); }
.zg-learn-side .zg-catalog__more{ color:rgba(255,255,255,.6); border-color:rgba(255,255,255,.2); }

@media (max-width:1024px){
  .zg-learn-body{ grid-template-columns:1fr; }
  .zg-learn-side{ max-height:none; }
}

@media (max-width:1024px){
  .zg-course-head{ grid-template-columns:1fr; }
  .zg-course-body{ grid-template-columns:1fr; }
  .zg-ov-layout{ grid-template-columns:1fr; }
  .zg-ov-side{ display:none; }
}

/* ===== PC-05 在线考试答题页 + PC-19 作业提交页(Task13) ===== */
.zg-exam-shell,
.zg-hw-shell{ width:100%; max-width:var(--zg-page-width); margin:24px auto 60px; background:var(--zg-face); border:1px solid #cfc6b4; border-radius:10px; overflow:hidden; box-shadow:0 40px 80px -46px rgba(60,45,30,.4); }

/* -- 顶栏(考试:计时+交卷 / 作业:返回+标题+状态) -- */
.zg-exam-topbar,
.zg-hw-topbar{ height:60px; display:flex; align-items:center; padding:0 40px; background:var(--zg-bg); border-bottom:1px solid #ede6d7; }
.zg-exam-topbar__title{ font-family:var(--zg-font-serif); font-weight:700; font-size:17px; color:var(--zg-ink); }
.zg-exam-topbar__right{ margin-left:auto; display:flex; align-items:center; gap:20px; }
.zg-hw-topbar__back{ font-family:var(--zg-font-sans); font-size:14px; color:var(--zg-muted); flex:none; }
.zg-hw-topbar__back:hover{ color:var(--zg-ink); }
.zg-hw-topbar__title{ font-family:var(--zg-font-serif); font-weight:700; font-size:17px; color:var(--zg-ink); margin-left:20px; }
.zg-exam-timer{ display:flex; align-items:center; gap:8px; font-family:var(--zg-font-sans); font-size:14px; color:var(--zg-primary); }
.zg-exam-timer svg{ flex:none; }
.zg-exam-timer #zgExamTimerText{ font-variant-numeric:tabular-nums; }
.zg-exam-timer.is-warning{ color:#c0392b; }

.zg-exam-status-pill,
.zg-hw-status-pill{ font-family:var(--zg-font-sans); font-size:13px; padding:5px 14px; border-radius:999px; color:var(--zg-muted); background:var(--zg-face); }
.zg-exam-status-pill--reviewing,
.zg-hw-status-pill--reviewing{ color:var(--zg-gold); background:rgba(176,136,66,.1); }
.zg-exam-status-pill--pass,
.zg-hw-status-pill--pass{ color:#fff; background:var(--zg-jade); }
.zg-exam-status-pill--fail,
.zg-hw-status-pill--fail{ color:#fff; background:var(--zg-primary); }
.zg-hw-status-pill--todo{ margin-left:auto; }

/* -- 答题区(doing) -- */
.zg-exam-body{ display:grid; grid-template-columns:1fr 280px; min-height:520px; }
.zg-exam-main{ padding:34px 44px; }
.zg-exam-q[hidden]{ display:none; }
.zg-exam-q__meta{ display:flex; align-items:center; gap:12px; margin-bottom:20px; font-family:var(--zg-font-sans); }
.zg-exam-q__type-badge{ font-size:12px; color:#fff; background:var(--zg-primary); padding:4px 12px; border-radius:999px; }
.zg-exam-q__type-badge--fill,
.zg-exam-q__type-badge--essay,
.zg-exam-q__type-badge--material{ background:var(--zg-gold); }
.zg-exam-q__count{ font-size:13px; color:var(--zg-muted); }
.zg-exam-mark{ margin-left:10px; font-size:12px; font-weight:500; }
.zg-exam-mark--right{ color:var(--zg-jade); }
.zg-exam-mark--wrong{ color:var(--zg-primary); }
.zg-exam-mark--part{ color:var(--zg-gold); }
.zg-exam-mark--pending{ color:var(--zg-muted); }
.zg-exam-q__stem{ font-family:var(--zg-font-serif); font-size:20px; color:var(--zg-ink); line-height:1.7; margin-bottom:28px; }
.zg-exam-result-item .zg-exam-q__stem{ font-size:17px; margin-bottom:16px; }

.zg-exam-options{ display:flex; flex-direction:column; gap:14px; max-width:640px; }
.zg-exam-options--judge{ flex-direction:row; max-width:320px; }
.zg-exam-opt{ display:flex; align-items:center; gap:14px; padding:16px 20px; border:1px solid var(--zg-line); border-radius:8px; background:#fff; cursor:pointer; font-family:var(--zg-font-sans); }
.zg-exam-opt:hover{ border-color:#c9bda3; }
.zg-exam-opt__key{ width:28px; height:28px; border-radius:50%; border:1px solid var(--zg-line-2); display:flex; align-items:center; justify-content:center; font-size:14px; color:var(--zg-muted); flex:none; }
.zg-exam-opt--square .zg-exam-opt__key{ border-radius:4px; }
.zg-exam-opt__text{ font-family:var(--zg-font-serif); font-size:16px; color:var(--zg-ink); }
.zg-exam-opt.is-selected{ border-color:var(--zg-primary); background:rgba(178,58,46,.05); }
.zg-exam-opt.is-selected .zg-exam-opt__key{ background:var(--zg-primary); border-color:var(--zg-primary); color:#fff; }
.zg-exam-opt--judge{ flex:1; justify-content:center; padding:16px; }
.zg-exam-fillinput,
.zg-exam-textarea{ width:100%; max-width:640px; font-family:var(--zg-font-serif); font-size:15px; color:var(--zg-ink); border:1px solid var(--zg-line); border-radius:8px; padding:14px 16px; background:#fff; }
.zg-exam-textarea{ resize:vertical; line-height:1.8; }
.zg-exam-qnav{ display:flex; gap:12px; margin-top:34px; }

/* -- 答题卡侧栏 -- */
.zg-exam-side{ border-left:1px solid #ede6d7; background:var(--zg-bg); padding:26px 24px; }
.zg-exam-side__hd{ font-family:var(--zg-font-sans); font-size:12px; color:#a89e8c; letter-spacing:.16em; margin-bottom:16px; }
.zg-exam-cardgrid{ display:grid; grid-template-columns:repeat(5,1fr); gap:10px; }
.zg-exam-cardnum{ aspect-ratio:1; display:flex; align-items:center; justify-content:center; border-radius:6px; border:1px solid var(--zg-line); background:#fff; color:var(--zg-muted); font-family:var(--zg-font-sans); font-size:14px; cursor:pointer; }
.zg-exam-cardnum.is-answered{ background:var(--zg-primary); color:#fff; border-color:var(--zg-primary); }
.zg-exam-cardnum.is-current{ border-color:var(--zg-primary); color:var(--zg-primary); }
.zg-exam-cardnum.is-answered.is-current{ box-shadow:0 0 0 2px rgba(178,58,46,.3) inset; }
.zg-exam-legend{ display:flex; gap:16px; margin-top:20px; font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); flex-wrap:wrap; }
.zg-exam-legend span{ display:flex; align-items:center; gap:6px; }
.zg-exam-legend__dot{ width:12px; height:12px; border-radius:3px; display:inline-block; }
.zg-exam-legend__dot--answered{ background:var(--zg-primary); }
.zg-exam-legend__dot--current{ border:1px solid var(--zg-primary); }
.zg-exam-legend__dot--none{ border:1px solid var(--zg-line); }
.zg-exam-progress-text{ margin-top:24px; text-align:center; font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); }

/* -- 结果/解析(result) -- */
.zg-exam-result{ padding:34px 44px; max-width:840px; margin:0 auto; }
.zg-exam-result-banner{ padding:18px 22px; border-radius:8px; background:#fff; border:1px solid var(--zg-line); font-family:var(--zg-font-sans); font-size:15px; color:var(--zg-ink); margin-bottom:24px; }
.zg-exam-result-banner b{ font-family:var(--zg-font-serif); font-size:22px; color:var(--zg-primary); }
.zg-exam-result-banner--pass{ border-color:rgba(60,110,94,.4); background:rgba(60,110,94,.06); }
.zg-exam-result-banner--pass b{ color:var(--zg-jade); }
.zg-exam-result-banner--fail{ border-color:rgba(178,58,46,.3); background:rgba(178,58,46,.05); }
.zg-exam-result-banner--reviewing{ border-color:rgba(176,136,66,.4); background:rgba(176,136,66,.08); color:#8a6a2c; }
.zg-exam-result-item{ border:1px solid var(--zg-line); border-radius:10px; background:#fff; padding:24px 26px; margin-bottom:16px; }
.zg-exam-opt--result{ position:relative; cursor:default; }
.zg-exam-opt--result:hover{ border-color:var(--zg-line); }
.zg-exam-opt--result.is-correct{ border-color:var(--zg-jade); background:rgba(60,110,94,.06); }
.zg-exam-opt--result.is-correct .zg-exam-opt__key{ background:var(--zg-jade); border-color:var(--zg-jade); color:#fff; }
.zg-exam-opt--result.is-wrong{ border-color:var(--zg-primary); background:rgba(178,58,46,.05); }
.zg-exam-opt--result.is-wrong .zg-exam-opt__key{ background:var(--zg-primary); border-color:var(--zg-primary); color:#fff; }
.zg-exam-opt__mine{ margin-left:auto; font-size:12px; color:var(--zg-muted); }
.zg-exam-q__answer-line{ font-family:var(--zg-font-sans); font-size:14px; color:#5b554c; line-height:1.8; }
.zg-exam-analysis,
.zg-exam-teacher{ margin-top:14px; padding:14px 16px; background:var(--zg-face); border-radius:6px; font-family:var(--zg-font-sans); font-size:13px; color:#5b554c; line-height:1.8; }
.zg-exam-result-actions{ margin-top:8px; }

/* -- 作业提交页(PC-19) -- */
.zg-hw-body{ padding:34px 40px; display:grid; grid-template-columns:1fr 300px; gap:30px; align-items:start; }
.zg-hw-card{ border:1px solid var(--zg-line); border-radius:10px; background:#fff; padding:24px 26px; margin-bottom:20px; }
.zg-hw-card__badge{ font-family:var(--zg-font-sans); font-size:12px; color:#fff; background:var(--zg-gold); padding:4px 12px; border-radius:999px; display:inline-block; margin-bottom:14px; }
.zg-hw-card__stem{ font-family:var(--zg-font-serif); font-size:19px; color:var(--zg-ink); line-height:1.7; }
.zg-hw-fillinput{ width:100%; margin-top:16px; font-family:var(--zg-font-serif); font-size:15px; border:1px solid var(--zg-line); border-radius:8px; padding:12px 16px; }
.zg-hw-editor{ margin-top:16px; border:1px solid var(--zg-line); border-radius:8px; overflow:hidden; }
.zg-hw-editor__toolbar{ display:flex; gap:14px; padding:12px 18px; border-bottom:1px solid #f0eadd; background:var(--zg-face); font-family:var(--zg-font-sans); font-size:13px; color:#a89e8c; }
.zg-hw-editor__toolbar b{ color:#5b554c; }
.zg-hw-editor__area{ width:100%; border:none; padding:22px 20px; min-height:200px; font-family:var(--zg-font-serif); font-size:15px; color:#3a352d; line-height:2; resize:vertical; }
.zg-hw-editor__area:focus{ outline:none; background:#fffdf5; }
.zg-hw-tip{ font-family:var(--zg-font-sans); font-size:12px; color:var(--zg-muted); margin:-8px 0 16px; }
.zg-hw-actions{ display:flex; align-items:center; gap:12px; }
.zg-hw-upload{ padding:8px 16px; border:1px dashed var(--zg-line-2); border-radius:6px; font-family:var(--zg-font-sans); font-size:13px; color:var(--zg-muted); }
.zg-hw-actions .zg-btn--primary{ margin-left:auto; }
.zg-hw-card__myanswer{ margin-top:14px; padding:16px 18px; background:var(--zg-face); border-radius:6px; font-family:var(--zg-font-serif); font-size:15px; color:#3a352d; line-height:1.9; white-space:pre-wrap; }
.zg-hw-card__teacher{ margin-top:12px; padding:14px 16px; border-radius:6px; background:rgba(176,136,66,.08); font-family:var(--zg-font-sans); font-size:13px; color:#8a6a2c; line-height:1.8; }
.zg-hw-info{ font-family:var(--zg-font-sans); font-size:13px; color:#5b554c; line-height:2; }
.zg-hw-info__todo{ color:var(--zg-muted); }
.zg-hw-info__reviewing{ color:var(--zg-gold); }
.zg-hw-info__done{ color:var(--zg-jade); }
.zg-hw-teachertext{ font-family:var(--zg-font-serif); font-size:14px; color:var(--zg-ink); line-height:1.8; }
.zg-hw-teachertext--empty{ color:#a89e8c; }

@media (max-width:1024px){
  .zg-exam-body{ grid-template-columns:1fr; }
  .zg-exam-side{ border-left:none; border-top:1px solid #ede6d7; }
  .zg-hw-body{ grid-template-columns:1fr; }
}