/* 小溪的博客 — 全面翻新 v1.0 */
:root {
  /* 蓝色系主色调 */
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #2c3e50;
  --text-light: #5a6a7e;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-h: #2563eb;
  --accent2: #6366f1;
  --accent2-h: #4f46e5;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.03);
  --shadow-h: 0 10px 30px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
  --shadow-card: 0 1px 4px rgba(0,0,0,.03);
  --header-h: 60px;
  --font: -apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  --font-mono: "JetBrains Mono","Fira Code","SF Mono",Menlo,monospace;
}

/* 暗色模式 */
body.dark {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --text-light: #cbd5e1;
  --text-muted: #64748b;
  --accent: #60a5fa;
  --accent-h: #93c5fd;
  --accent2: #818cf8;
  --accent2-h: #a5b4fc;
  --border: #334155;
  --shadow: 0 1px 3px rgba(0,0,0,.2);
  --shadow-h: 0 10px 30px rgba(0,0,0,.3);
  --shadow-card: 0 1px 4px rgba(0,0,0,.15);
}
body.dark .post-body code{background:#35302c}
body.dark .post-body pre{background:#1e1c1a;border-color:#35302c}
body.dark .post-body blockquote{background:#252220}
body.dark .footer{border-color:#35302c}
body.dark .read-progress{background:rgba(37,34,32,.95)}

/* 基础 */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.8;font-size:15px;min-height:100vh;display:flex;flex-direction:column;transition:background .3s,color .3s}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent-h)}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* ===== 阅读进度条 ===== */
.read-progress{position:fixed;top:0;left:0;width:100%;height:3px;background:rgba(255,255,255,.9);z-index:200;backdrop-filter:blur(4px);display:none}
.read-progress .bar{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .1s;border-radius:0 2px 2px 0}
body.reading .read-progress{display:block}
/* 只在文章页显示，通过 JS 加 reading class */

/* ===== Header ===== */
.header{background:rgba(255,255,255,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
body.dark .header{background:rgba(37,34,32,.88)}
.header-inner{display:flex;justify-content:space-between;align-items:center;height:var(--header-h);gap:16px}
.logo{font-size:19px;font-weight:700;color:var(--text);letter-spacing:-.3px;white-space:nowrap}
.logo span{color:var(--accent)}

/* Nav */
.nav{display:flex;align-items:center;gap:12px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:6px 14px;color:var(--text-light);font-size:14px;font-weight:500;border-radius:8px;transition:all .2s;white-space:nowrap}
.nav-links a:hover{background:var(--border);color:var(--text)}
.nav-links a.active{background:var(--accent);color:#fff}

/* Nav search */
.nav-search{display:flex;align-items:center;flex-shrink:0}
.nav-search input{width:120px;height:34px;padding:0 12px;border:1px solid var(--border);border-radius:8px 0 0 8px;font-size:13px;outline:none;font-family:inherit;background:var(--bg);color:var(--text);transition:all .25s}
.nav-search input:focus{width:170px;border-color:var(--accent)}
.nav-search button{height:34px;padding:0 10px;border:1px solid var(--border);border-left:none;border-radius:0 8px 8px 0;background:var(--bg);color:var(--text-muted);cursor:pointer;display:flex;align-items:center;transition:all .2s}
.nav-search button:hover{color:var(--accent);border-color:var(--accent)}

/* 暗色/搜索切换按钮组 */
.nav-actions{display:flex;align-items:center;gap:4px}
.nav-btn{width:34px;height:34px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text-light);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:15px;transition:all .2s}
.nav-btn:hover{background:var(--border);color:var(--text)}

/* Mobile search */
.mobile-search{display:none}

/* Hamburger */
.nav-toggle{display:none;width:36px;height:36px;border:none;background:none;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:0}
.nav-toggle span{display:block;width:20px;height:2.5px;background:var(--text);border-radius:2px;transition:all .3s ease}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== Layout ===== */
.main{flex:1;padding:28px 0}
.main-layout{display:flex;gap:28px;align-items:flex-start}
/* Content */
.content{flex:1;min-width:0}

/* ===== Sidebar ===== */
.sidebar{width:260px;flex-shrink:0;align-self:flex-start}
.sidebar .s-card{margin-bottom:14px}
.sidebar .s-card:last-child{margin-bottom:0}
/* 作者卡片 - 更丰富的视觉 */
.author-bg{height:80px;background:linear-gradient(135deg,#3b82f6,#6366f1,#8b5cf6);border-radius:12px 12px 0 0}
.author-body{margin-top:-32px;padding:0 16px 10px;text-align:center}
.avatar{width:54px;height:54px;border-radius:50%;margin:0 auto 6px;display:block;object-fit:cover;border:3px solid var(--card);box-shadow:0 2px 8px rgba(0,0,0,.1);transition:transform .3s}
.author-body h3{font-size:15px;font-weight:600}
.author-bio{font-size:11px;color:var(--text-muted);margin-top:1px}
.author-counters{display:flex;border-top:1px solid var(--border)}
.counter{flex:1;padding:8px 6px;transition:background .2s;text-align:center}
.counter:hover{background:var(--bg)}
.counter+.counter{border-left:1px solid var(--border)}
.counter b{display:block;font-size:15px;color:var(--accent);font-weight:700}
.counter span{font-size:10px;color:var(--text-muted)}

/* 侧边栏卡片统一风格 */
.s-card{background:var(--card);border-radius:12px;box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .2s}
.s-card:hover{box-shadow:var(--shadow-h)}
.s-card-head{padding:12px 16px 8px;font-size:12px;font-weight:600;color:var(--text-muted);display:flex;align-items:center;gap:6px;letter-spacing:.3px;border-bottom:1px solid var(--border)}
.s-list{list-style:none;padding:0 0 3px}
.s-list li{padding:7px 16px;font-size:13px}
.s-list a{color:var(--text-light);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color .2s}
.s-list a:hover{color:var(--accent)}

/* 小故事 — 最后一项，sticky 填空白 */
.story-card .story-text{min-height:70px;display:flex;align-items:center;justify-content:center}
/* 小故事吸底状态 */
.story-card.stuck{position:fixed;bottom:20px;z-index:50;box-shadow:0 4px 20px rgba(0,0,0,.12);border-radius:12px}
.story-card .story-text p{font-size:13px;color:var(--text-light);line-height:1.8;text-indent:2em;font-style:italic;padding:10px 16px}
.story-refresh{width:100%;padding:7px;border:none;border-top:1px solid var(--border);background:none;color:var(--text-muted);font-size:11px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:4px;transition:all .2s}
.story-refresh:hover{background:var(--bg);color:var(--accent)}

/* ===== 文章列表 ===== */
.post-item{background:var(--card);border-radius:var(--radius);padding:24px 28px;margin-bottom:14px;box-shadow:var(--shadow);transition:all .25s;border:1px solid transparent}
.post-item:hover{box-shadow:var(--shadow-h);border-color:var(--border);transform:translateY(-1px)}
.post-title{font-size:20px;font-weight:600;margin-bottom:6px;letter-spacing:-.2px}
.post-title a{color:var(--text)}.post-title a:hover{color:var(--accent)}
.post-meta{font-size:12.5px;color:var(--text-muted);margin-bottom:8px;display:flex;flex-wrap:wrap;gap:8px}
.post-meta span{display:inline-flex;align-items:center;gap:4px}
.post-desc{font-size:14.5px;color:var(--text-light);line-height:1.7;margin-bottom:10px}
.read-more{font-size:13px;font-weight:500;color:var(--accent);display:inline-flex;align-items:center;gap:4px}
.read-more:hover{color:var(--accent-h)}

/* Tags */
.post-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:5px}
.tag{display:inline-block;padding:2px 10px;font-size:11.5px;border-radius:20px;background:var(--bg);color:var(--text-muted);border:1px solid var(--border);transition:all .2s}
.tag:hover{color:var(--accent);border-color:var(--accent);background:rgba(224,122,95,.06)}

/* ===== 文章详情 ===== */
.post-full{background:var(--card);border-radius:var(--radius);padding:36px 40px;box-shadow:var(--shadow)}
.post-full h1{font-size:26px;font-weight:700;line-height:1.4;margin-bottom:8px;letter-spacing:-.3px}
.post-full .post-meta{margin-bottom:4px}
.post-body{font-size:15.5px;color:var(--text-light);line-height:1.9;margin-top:20px}
.post-body h2{font-size:20px;margin:28px 0 10px;padding-bottom:6px;border-bottom:1px solid var(--border);color:var(--text)}
.post-body h3{font-size:18px;margin:22px 0 8px;color:var(--text)}
.post-body h4{font-size:16px;margin:18px 0 6px;color:var(--text)}
.post-body p{margin-bottom:12px;word-break:break-word}
.post-body pre{background:#f4f2ee;border:1px solid var(--border);padding:16px 18px;border-radius:10px;overflow-x:auto;font-size:13.5px;margin:16px 0;font-family:var(--font-mono);-webkit-overflow-scrolling:touch}
.post-body code{background:#f0eeea;padding:2px 6px;border-radius:4px;font-size:13px;font-family:var(--font-mono);word-break:break-word}
.post-body pre code{background:none;padding:0;white-space:pre;word-break:normal;font-size:13.5px}
.post-body blockquote{border-left:4px solid var(--accent);padding:10px 20px;margin:16px 0;background:var(--bg);color:var(--text-light);border-radius:0 8px 8px 0}
.post-body img{max-width:100%;height:auto;border-radius:10px;margin:8px 0;transition:transform .2s;cursor:zoom-in}
.post-body img:active{transform:scale(.98)}
.post-body table{width:100%;border-collapse:separate;border-spacing:0;margin:16px 0;font-size:14px;border-radius:10px;overflow:hidden;border:1px solid var(--border)}
.post-body table th,.post-body table td{border-bottom:1px solid var(--border);padding:10px 14px;text-align:left}
.post-body table th{background:var(--bg);font-weight:600;color:var(--text)}
.post-body table tr:last-child td{border-bottom:none}
.post-body table tr:hover td{background:var(--bg)}
.post-body ul,.post-body ol{padding-left:24px;margin:10px 0}
.post-body li{margin-bottom:5px}
.post-body li::marker{color:var(--accent)}
.post-body hr{margin:24px 0;border:none;height:1px;background:var(--border)}
.post-back{margin-top:28px;padding-top:16px;border-top:1px solid var(--border)}
.post-back a{font-size:14px;color:var(--text-muted);display:inline-flex;align-items:center;gap:4px}
.post-back a:hover{color:var(--accent)}

/* ===== Lightbox ===== */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:999;display:flex;align-items:center;justify-content:center;cursor:zoom-out;animation:fadeIn .2s}
.lightbox img{max-width:92%;max-height:92%;border-radius:12px;box-shadow:0 8px 60px rgba(0,0,0,.5);animation:scaleIn .2s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes scaleIn{from{transform:scale(.9)}to{transform:scale(1)}}

/* ===== 分页 ===== */
.pagination{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:20px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border-radius:8px;font-size:14px;transition:all .2s;border:1px solid var(--border)}
.pagination a{background:var(--card);color:var(--text-light)}
.pagination a:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.pagination .curr{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}

/* ===== Footer ===== */
.footer{text-align:center;padding:24px 0;color:var(--text-muted);font-size:12px;border-top:1px solid var(--border);margin-top:48px}

/* ===== Flash ===== */
.flash{padding:10px 16px;background:rgba(59,130,246,.08);color:var(--accent);border-radius:8px;margin-bottom:16px;font-size:13px;border:1px solid rgba(59,130,246,.15)}

/* ===== Admin tweaks ===== */
.admin-head{display:flex;gap:10px;align-items:center;margin-bottom:20px;flex-wrap:wrap}
.admin-head h1{font-size:20px;margin-right:auto}
.admin-table{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);overflow-x:auto}
.admin-table table{width:100%;border-collapse:collapse;min-width:480px}
.admin-table th{text-align:left;padding:10px 8px;border-bottom:2px solid var(--border);font-size:12px;color:var(--text-muted);font-weight:600}
.admin-table td{padding:10px 8px;border-bottom:1px solid var(--border);font-size:14px}
.fg{margin-bottom:14px}.fg label{display:block;margin-bottom:4px;font-size:13px;font-weight:500}
.fg input[type=text],.fg input[type=password],.fg textarea,.fg select{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--text);transition:border-color .2s}
.fg textarea{font-family:var(--font-mono);resize:vertical}
.fg input:focus,.fg textarea:focus{outline:none;border-color:var(--accent)}
.btn{display:inline-block;padding:8px 18px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--text);font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;text-decoration:none;line-height:1.4}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-h);color:#fff}
.btn-danger{color:#c0392b}.btn-danger:hover{border-color:#c0392b;color:#c0392b}
.btn-sm{padding:4px 8px;font-size:12px}
.login-box{max-width:360px;margin:60px auto;background:var(--card);padding:36px;border-radius:var(--radius);box-shadow:var(--shadow)}
.login-box h1{font-size:20px;text-align:center;margin-bottom:20px}
.login-box .btn{width:100%;padding:10px}
.empty{text-align:center;color:var(--text-muted);padding:60px 20px}
.empty i{font-size:36px;display:block;margin-bottom:10px}
body.dark .empty i{opacity:.6}

/* ===== Mobile ===== */
@media(max-width:900px){
  .main-layout{flex-direction:column}
  .sidebar{width:100%;position:static;display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .sidebar .author-card{grid-column:1/-1}
  .sidebar .story-card{grid-column:1/-1;position:static}
}
@media(max-width:640px){
  .sidebar{display:flex !important;flex-direction:column;gap:12px}
}

@media(max-width:820px){
  .container{padding:0 14px}
  .main{padding:20px 0}

  .mobile-search{display:flex;flex:1;margin:0 8px;max-width:240px}
  .mobile-search input{width:100%;height:36px;padding:0 12px;border:1px solid var(--border);border-radius:8px 0 0 8px;font-size:13px;outline:none;font-family:inherit;background:var(--bg);color:var(--text)}
  .mobile-search button{height:36px;padding:0 10px;border:1px solid var(--border);border-left:none;border-radius:0 8px 8px 0;background:var(--bg);color:var(--text-muted);cursor:pointer;display:flex;align-items:center}
  .mobile-search button:hover{color:var(--accent)}

  .nav-toggle{display:flex}
  .nav-links{display:none;flex-direction:column;position:absolute;top:var(--header-h);left:0;right:0;background:var(--card);border-bottom:1px solid var(--border);padding:8px 16px 16px;gap:0;z-index:99}
  body.dark .nav-links{background:var(--card)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--border);font-size:15px;border-radius:0}
  .nav-links a:last-child{border-bottom:none}
  .nav-links .nav-search{display:flex;margin-top:10px;width:100%}
  .nav-links .nav-search input{width:100%}
  /* 隐藏顶部 actions */
  .nav-actions{display:none}
}

@media(max-width:480px){
  .post-item{padding:18px 20px}
  .post-title{font-size:18px}
  .post-desc{font-size:14px}
  .post-full{padding:22px 18px}
  .post-full h1{font-size:22px}
  .post-body{font-size:15px}
  .post-body pre{padding:12px;font-size:13px}
  .post-body table{font-size:13px}
  .post-body table th,.post-body table td{padding:6px 8px}
  .admin-table{padding:12px}
  .admin-table td,.admin-table th{padding:6px;font-size:13px}
  .login-box{margin:30px 14px;padding:24px}
}

/* ===== 每日菜单 - Sidebar Summary ===== */
#todayMealSummary div:last-child{border-bottom:none !important}

/* ===== 每日菜单 - 全宽无侧边栏 ===== */
body.no-sidebar .sidebar{display:none !important}
body.no-sidebar .content{flex:1;max-width:100%}
body.no-sidebar .main-layout{max-width:860px;margin:0 auto}

/* ===== 每日菜单 - 手机适配 ===== */
@media(max-width:768px){
  .meal-timeline{grid-template-columns:repeat(2,1fr)}
  .meal-page .meal-header h1{font-size:1.3rem}
  .meal-page .meal-date{font-size:0.8rem}
  .wheel-container{width:280px;height:280px}
  #wheelCanvas{width:280px;height:280px}
  .wheel-controls{flex-direction:column}
  .wheel-controls select{width:100%}
  .wheel-controls .btn{width:100%;justify-content:center}
  .picker-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}
  .modal-content{width:95%;padding:1rem}
  .result-name{font-size:1.2rem}
}
@media(max-width:480px){
  .meal-timeline{grid-template-columns:repeat(2,1fr);gap:8px}
  .meal-slot{padding:0.8rem}
  .slot-icon{font-size:1.5rem}
  .meal-section{padding:1rem}
  .wheel-container{width:240px;height:240px}
  #wheelCanvas{width:240px;height:240px}
  .wheel-pointer{top:-10px;border-top-width:14px}
  .meal-page .meal-header{flex-direction:column;align-items:flex-start;gap:0.3rem}
}

/* ===============================================
   手机端适配 — 触屏优化 & 底部抽屉导航
   =============================================== */

/* 触屏基础优化 */
*{-webkit-tap-highlight-color:transparent}
input,select,textarea,button{font-size:16px}  /* iOS 防止自动缩放 */

/* 底部抽屉 - 通用组件 */
.drawer-overlay{position:fixed;inset:0;z-index:500;background:rgba(0,0,0,0.4);display:none;opacity:0;transition:opacity 0.25s}
.drawer-overlay.show{display:block;opacity:1}
.drawer-panel{position:fixed;bottom:0;left:0;right:0;z-index:501;background:var(--card);border-radius:16px 16px 0 0;padding:1rem 1.2rem 1.5rem;transform:translateY(100%);transition:transform 0.3s cubic-bezier(0.32,0.72,0,1);max-height:70vh;overflow-y:auto;-webkit-overflow-scrolling:touch;box-shadow:0 -4px 20px rgba(0,0,0,0.12)}
.drawer-panel.open{transform:translateY(0)}
.drawer-handle{width:36px;height:4px;background:var(--border);border-radius:2px;margin:0 auto 0.8rem}
.drawer-panel h3{font-size:0.9rem;margin:0 0 0.6rem;color:var(--text-muted)}
.drawer-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-bottom:0.6rem}
.drawer-grid .drawer-num{width:100%;aspect-ratio:1;display:flex;align-items:center;justify-content:center;border-radius:8px;font-size:0.82rem;font-weight:600;cursor:pointer;border:2px solid transparent;transition:0.15s;background:var(--bg);color:var(--text);min-height:44px}
.drawer-grid .drawer-num.answered{border-color:var(--accent);background:rgba(100,120,255,0.08);color:var(--accent)}
.drawer-grid .drawer-num.correct{background:rgba(76,175,80,0.15);color:#2e7d32;border-color:#4caf50}
.drawer-grid .drawer-num.wrong{background:rgba(244,67,54,0.12);color:#c62828;border-color:#f44336}
.drawer-grid .drawer-num:active{transform:scale(0.92)}
.drawer-legend{display:flex;gap:12px;font-size:0.72rem;color:var(--text-muted);flex-wrap:wrap;padding:4px 0}
.drawer-legend span{display:flex;align-items:center;gap:4px}
.drawer-legend .dot{display:inline-block;width:10px;height:10px;border-radius:50%}
.drawer-legend .dot.blue{background:var(--accent)}
.drawer-legend .dot.green{background:#4caf50}
.drawer-legend .dot.red{background:#f44336}

/* 浮动导航按钮 */
.float-nav-btn{position:fixed;bottom:20px;right:20px;z-index:200;width:52px;height:52px;border-radius:50%;background:var(--accent);color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:0 4px 16px rgba(59,130,246,0.35);transition:0.2s;touch-action:manipulation}
.float-nav-btn:active{transform:scale(0.92)}

/* ===== 考试答题页 移动端 ===== */
@media(max-width:768px){
  .exam-body{flex-direction:column}
  .exam-header h1{font-size:1.1rem}
  .exam-header{padding:0.6rem 0}
  .exam-info-bar{flex-wrap:wrap;gap:6px}
  .exam-info-bar .timer{font-size:1rem}
  .exam-info-bar .btn-submit{padding:8px 16px;font-size:0.85rem}
  .question-card{padding:0.9rem}
  .q-stem{font-size:0.9rem}
  .opt-label{padding:12px;min-height:44px}  /* 触摸友好 */
  .opt-label .opt-order{width:28px;height:28px;font-size:0.85rem}
  .float-nav-btn{display:flex}
}

/* ===== 考试成绩页 移动端 ===== */
@media(max-width:768px){
  body.result-page .result-body{flex-direction:column}
  body.result-page .result-sheet{display:none}  /* 隐藏原有侧栏 */
  body.result-page .float-nav-btn{display:flex}
  .result-header h1{font-size:1.1rem}
  .result-score{font-size:2.2rem}
  .result-q-card{padding:0.9rem}
  .result-q-card .rq-stem{font-size:0.9rem}
  .result-q-card .rq-option{padding:10px 10px;min-height:44px;font-size:0.88rem}
  .result-actions{gap:0.4rem}
  .result-actions .btn-result{font-size:0.82rem;padding:6px 14px}
}

/* ===== 考试记录页 移动端 ===== */
@media(max-width:768px){
  .history-header{flex-direction:column;align-items:flex-start}
  .history-header h1{font-size:1.2rem}
  .record-card{flex-wrap:wrap;gap:0.5rem;padding:0.8rem}
  .record-card .exam-icon{font-size:1.4rem;width:36px}
  .record-card .exam-title{font-size:0.88rem}
  .record-card .exam-score{font-size:1.1rem;min-width:55px}
  .retention-note{font-size:0.8rem;padding:0.6rem 0.8rem}
}

/* ===== 考试列表/首页 移动端 ===== */
@media(max-width:768px){
  .exam-categories{margin:1rem 0.5rem}
  .category-card{padding:1.2rem;gap:0.8rem}
  .category-card:hover{transform:none}  /* 移除非必要的hover效果 */
  .category-icon{font-size:2rem;min-width:50px}
  .category-info h2{font-size:0.95rem}
}

/* ===== 管理后台 移动端 ===== */
@media(max-width:768px){
  .admin-head{flex-direction:column;align-items:stretch}
  .admin-head h1{font-size:1.1rem}
  .admin-table{padding:10px}
  .admin-table table{font-size:0.8rem;min-width:550px}
  .admin-table th,.admin-table td{padding:6px 5px;font-size:0.78rem}
  .user-table{font-size:0.82rem}
  .user-table th,.user-table td{padding:5px 4px}
  .user-table .actions{font-size:0.75rem}
  .user-form{max-width:100%}
}

/* ===== 文章详情 移动端 ===== */
@media(max-width:768px){
  .post-full{padding:18px 16px}
  .post-full h1{font-size:1.15rem}
  .post-body{font-size:0.92rem}
  .post-body pre{font-size:0.8rem;padding:10px;margin:10px 0}
  .post-body table{font-size:0.8rem}
  .post-body table th,.post-body table td{padding:5px 6px}
  .post-body blockquote{padding:8px 14px}
}

/* ===== 菜单/吃饭页 移动端 ===== */
@media(max-width:768px){
  .meal-page .meal-header{flex-direction:column;align-items:flex-start;gap:0.4rem}
  .food-log-page .meal-header{flex-direction:column;align-items:flex-start;gap:0.4rem}
}

/* ===== 首页文章列表 移动端 ===== */
@media(max-width:768px){
  .post-item{padding:16px 18px}
  .post-title{font-size:1rem}
  .post-desc{font-size:0.88rem}
  .post-meta{font-size:0.75rem}
}

/* ===== 评论区 ===== */
.comments-section{margin-top:2rem;padding:1.5rem;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-card)}
.comments-title{font-size:1.15rem;margin-bottom:1rem;color:var(--text);border-bottom:2px solid var(--accent);padding-bottom:0.5rem}
.comments-list{display:flex;flex-direction:column;gap:1rem}
.comment-item{display:flex;gap:0.75rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}
.comment-item:last-child{border-bottom:none;padding-bottom:0}
.comment-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.9rem;flex-shrink:0}
.comment-body{flex:1;min-width:0}
.comment-meta{display:flex;gap:0.75rem;align-items:baseline;margin-bottom:0.3rem}
.comment-author{font-weight:600;color:var(--text);font-size:0.9rem}
.comment-time{font-size:0.78rem;color:var(--text-muted)}
.comment-content{font-size:0.9rem;line-height:1.6;color:var(--text-light);word-break:break-word}
.comments-empty{text-align:center;color:var(--text-muted);padding:1.5rem 0;font-size:0.9rem}

/* 评论表单 */
.comment-form-wrap{margin-top:1.5rem;padding-top:1rem;border-top:1px solid var(--border)}
.comment-form-wrap h3{font-size:1rem;margin-bottom:0.75rem;color:var(--text)}
.comment-form{display:flex;flex-direction:column;gap:0.6rem}
.cf-input,.cf-textarea{width:100%;padding:0.6rem 0.75rem;border:1px solid var(--border);border-radius:8px;font-size:0.88rem;font-family:var(--font);background:var(--bg);color:var(--text);transition:border-color .2s}
.cf-input:focus,.cf-textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.cf-textarea{resize:vertical;min-height:90px}
.cf-submit{align-self:flex-end;padding:0.5rem 1.2rem;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:0.88rem;cursor:pointer;transition:background .2s}
.cf-submit:hover{background:var(--accent-h)}

/* ===== 小屏手机（<=400px）极端适配 ===== */
@media(max-width:400px){
  .container{padding:0 10px}
  .main{padding:14px 0}
  .post-item{padding:12px 14px}
  .post-title{font-size:0.95rem}
  .post-full{padding:14px 12px}
  .exam-container{padding:0 4px}
  .question-card{padding:0.7rem}
  .drawer-panel{padding:0.8rem}
  .drawer-grid{grid-template-columns:repeat(5,1fr);gap:4px}
  .comments-section{padding:0.8rem}
  .comment-avatar{width:30px;height:30px;font-size:0.8rem}
}

/* ── 个人信息模块 ───────────────── */
.nav-avatar-btn{background:none;border:none;cursor:pointer;padding:0;margin-left:6px;display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;overflow:hidden;flex-shrink:0;border:2px solid var(--border,#ccc)}
.nav-avatar-btn img{width:100%;height:100%;object-fit:cover;display:block}
.modal-overlay{position:fixed;inset:0;z-index:900;background:rgba(0,0,0,0.45);display:flex;align-items:center;justify-content:center;padding:1rem}
.profile-modal{background:var(--bg,#fff);color:var(--text,#222);border-radius:12px;width:100%;max-width:420px;max-height:90vh;overflow-y:auto;box-shadow:0 10px 40px rgba(0,0,0,0.25)}
.profile-modal-head{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.2rem;border-bottom:1px solid var(--border,#eee)}
.profile-modal-head h3{margin:0;font-size:1.1rem}
.modal-close{background:none;border:none;font-size:1.6rem;line-height:1;cursor:pointer;color:var(--text-muted,#888)}
.profile-modal-body{padding:1.2rem}
.profile-avatar-edit{display:flex;flex-direction:column;align-items:center;gap:0.6rem;margin-bottom:1rem}
.profile-avatar-edit img{width:88px;height:88px;border-radius:50%;object-fit:cover;border:3px solid var(--border,#ddd)}
.profile-avatar-change{background:var(--accent,#4a7cff);color:#fff;border:none;padding:0.4rem 0.9rem;border-radius:6px;cursor:pointer;font-size:0.85rem}
.profile-field{margin-bottom:0.9rem}
.profile-field label{display:block;font-size:0.82rem;color:var(--text-muted,#777);margin-bottom:0.3rem}
.profile-field input{width:100%;padding:0.55rem 0.7rem;border:1px solid var(--border,#ddd);border-radius:6px;background:var(--input-bg,#fff);color:var(--text,#222);box-sizing:border-box}
.profile-disabled{background:var(--bg-muted,#f2f2f2);color:var(--text-muted,#999)}
.profile-msg{font-size:0.85rem;margin-bottom:0.7rem;min-height:1em}
.profile-error{color:#e5484d}
.profile-success{color:#2ea043}
.profile-save-btn{width:100%;padding:0.65rem;background:var(--accent,#4a7cff);color:#fff;border:none;border-radius:6px;font-size:0.95rem;cursor:pointer;font-weight:600}
.profile-save-btn:hover{opacity:0.9}