/* ============================================
   H5 社区交流系统 — 前端设计语言
   ============================================ */
:root{
  --primary:#3b82f6; --primary-dark:#2563eb; --primary-soft:#eef2ff;
  --bg:#f3f5f9; --card:#ffffff; --line:#e5e9f0;
  --txt:#1f2937; --muted:#6b7280;
  --ok:#16a34a; --warn:#d97706; --danger:#dc2626;
  --radius:12px; --shadow:0 4px 20px rgba(0,0,0,.05);
  --vh:100vh;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-tap-highlight-color:transparent}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--txt); min-height:100vh;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* ---- 手机外框 ---- */
.phone-frame{min-height:100vh}
.app-container{max-width:480px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}
/* ================================================
   PC 端 iPhone 11 Pro 手机外框 —— Space Gray
   机身 400×865, 刘海, Home Indicator, 侧边按键
   ================================================ */
/* iPhone 11 Pro 外框 — Space Gray */
/* PC 端 H5 居中展示（无手机外框）*/
@media screen and (min-width:769px){
  .phone-frame{min-height:100vh;background:#f5f5f5}
  .app-container{
    max-width:480px;width:100%;min-height:100vh;
    border-radius:0;box-shadow:none;
  }
}

/* ---- 头部 ---- */
.app-header{background:linear-gradient(120deg,var(--primary),var(--primary-dark));color:#fff;position:sticky;top:0;z-index:50}
.header-inner{position:relative;display:flex;align-items:center;gap:10px;padding:14px 16px}
.header-brand{font-size:22px;font-weight:700;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,.2);cursor:pointer;flex-shrink:0}
.header-brand a{color:#fff;text-decoration:none;line-height:1;display:block}
.header-cat{font-size:12px;background:rgba(255,255,255,.18);padding:3px 10px;border-radius:20px}
.header-user{display:flex;align-items:center;gap:6px;margin-left:auto}
.chip{font-size:12px;background:rgba(255,255,255,.15);padding:4px 10px;border-radius:20px;color:#fff}
.chip-primary{background:#fff;color:var(--primary);font-weight:600}
.user-chip{background:#facc15;color:#713f12;font-weight:600}
.notice-bar{background:rgba(255,255,255,.14);font-size:12px;padding:7px 0;overflow:hidden;white-space:nowrap;position:relative}
.notice-track{display:inline-flex;white-space:nowrap;will-change:transform;animation:noticeMarquee 18s linear infinite}
.notice-track span{display:inline-block;padding-right:4em}
@keyframes noticeMarquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---- 主体 ---- */
.app-body{flex:1;display:flex;flex-direction:column;min-height:0}
.app-content{flex:1;display:flex;flex-direction:column;overflow-y:auto;-webkit-overflow-scrolling:touch;min-height:0;padding-bottom:64px}

/* PC 手机外框：外框内部纵向滚动
   app-content 不能被 flex stretch 拉伸到与 app-body 等高(否则内容不溢出无法滚动)，
   故改为由 app-body 承接入口滚动、app-content 保持自然高度去溢出它 */
@media screen and (min-width:769px){
  .app-body{flex:1 1 0;overflow-y:auto;-webkit-overflow-scrolling:touch;display:block}
  .app-content{flex:0 0 auto;width:100%;overflow:visible;min-height:0}
}

/* ---- 卡片 ---- */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);margin:14px}
.card-title{font-size:15px;font-weight:700;padding:14px 16px 4px}
.card-title small{font-weight:400;color:var(--muted);font-size:12px}
.section{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);margin:14px;overflow:hidden}
.section-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line)}
.section-head h3{font-size:14px}
.section-body{padding:6px 16px}

/* ---- 首页板块列表 ---- */
.board-list{list-style:none}
.board-item{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--line)}
.board-item:last-child{border-bottom:none}
.board-item:hover{background:var(--primary-soft)}
.board-ico{width:44px;height:44px;border-radius:12px;background:var(--primary-soft);color:var(--primary);font-size:22px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.board-item .board-ico img{width:100%;height:100%;object-fit:cover;border-radius:12px;display:block}
.board-info{flex:1;min-width:0}
.board-name{font-size:15px;font-weight:600}
.board-desc{font-size:12px;color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.board-meta{font-size:11px;color:var(--muted);margin-top:4px}
.board-meta b{color:var(--primary)}

/* ---- 板块页顶部四按钮 ---- */
.toolbar{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:14px 16px;background:var(--card);margin:14px;border-radius:var(--radius);box-shadow:var(--shadow)}
.tool-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 0;border-radius:10px;color:var(--muted);font-size:11px;transition:.2s}
.tool-btn .tb-ico{font-size:20px}
.tool-btn:hover{background:var(--primary-soft);color:var(--primary)}
.tool-btn.active{background:var(--primary);color:#fff}

/* ---- 帖子列表 ---- */
.post-item{display:block;padding:15px 16px;border-bottom:1px solid var(--line)}
.post-item:last-child{border-bottom:none}
.post-title{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px;line-height:1.4}
.post-tags{display:inline-flex;gap:4px}
.tag{font-size:10px;padding:2px 6px;border-radius:4px;font-weight:500;flex-shrink:0}
.tag-top{background:#fbbf24;color:#78350f}
.tag-ess{background:#f87171;color:#7f1d1d}
.tag-sw{background:#e2e8f0;color:#475569}
.post-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted);margin-top:7px;flex-wrap:wrap}
.post-meta .by{flex:1;min-width:0}
.post-meta .stat{display:flex;gap:12px}

/* 列表项：作者在顶部 / 标题在下 / 底部赞·看·评栏 */
.post-item-author{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.pia-av{width:36px;height:36px;border-radius:50%;object-fit:cover;flex-shrink:0;background:var(--primary-soft)}
.pia-av-empty{display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--primary)}
.pia-info{display:flex;flex-direction:column;min-width:0;line-height:1.3;flex:1}
.pia-line1{display:flex;align-items:center;gap:4px;min-width:0;white-space:nowrap}
.pia-line1 .by{flex:0 1 auto;overflow:hidden;text-overflow:ellipsis}
.pia-line1 .medal-row{flex-shrink:0}
.pia-info .by{color:var(--txt,#1f2937);font-weight:700;font-size:19px;text-decoration:none}
.pia-time{font-size:14px;color:var(--muted)}
.post-item-bar{display:flex;justify-content:space-around;align-items:center;margin-top:12px;padding-top:11px;border-top:1px solid var(--line);font-size:16px}
.pib-stat{display:inline-flex;align-items:center;gap:5px;color:var(--muted)}
.pib-stat b{font-weight:600;color:var(--txt)}
.pib-like{background:none;border:none;padding:5px 18px;border-radius:20px;cursor:pointer;font-family:inherit;font-size:16px;transition:.2s}
.pib-like:hover{background:var(--primary-soft)}
.pib-like.on{color:var(--danger,#dc2626);font-weight:700;background:#fee2e2}
.pib-like.on b{color:var(--danger,#dc2626)}

/* ---- 勋章 ---- */
.medal-row{display:inline-flex;align-items:center;gap:2px;margin-left:6px;vertical-align:middle}
.medal-row .m-ico{font-size:15px;line-height:1;filter:drop-shadow(0 1px 1px rgba(0,0,0,.15))}
.medal-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px;margin-top:4px}
.medal-card{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;border:1px solid var(--line,#e5e7eb);border-radius:12px;background:#fff}
.medal-card .mc-ico{font-size:34px;line-height:1;filter:grayscale(.6);opacity:.55;transition:.2s}
.medal-card .mc-ico.on{filter:none;opacity:1}
.medal-card .mc-name{font-size:13px;font-weight:600;color:var(--txt,#1f2937);text-align:center}
.medal-card .mc-price{font-size:12px;color:var(--muted,#64748b)}

/* 个人中心选项卡 */
.my-tabs{display:flex;gap:8px;margin:14px 0 2px;overflow-x:auto;padding:2px;-webkit-overflow-scrolling:touch}
.my-tabs .mt{flex-shrink:0;padding:8px 16px;border-radius:20px;background:#fff;border:1px solid var(--line,#e5e7eb);color:var(--txt,#1f2937);font-size:14px;font-weight:600;text-decoration:none;transition:.2s;white-space:nowrap}
.my-tabs .mt.on{background:var(--primary,#3b82f6);color:#fff;border-color:var(--primary,#3b82f6)}

/* ---- 详情页 ---- */
.post-detail{padding:18px 16px}
.pd-title{font-size:26px!important;font-weight:700!important;line-height:1.45}
.pd-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px;color:var(--muted);margin:10px 0 16px}
.pd-meta .uname{color:var(--primary);font-weight:600}
.pd-content{font-size:26px!important;line-height:1.8;word-break:break-word}
.pd-author{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.pd-av{width:46px;height:46px;border-radius:50%;object-fit:cover;flex-shrink:0;background:var(--primary-soft)}
.pd-av-link{display:inline-block;flex-shrink:0;line-height:0;border-radius:50%}
.pd-author-info{display:flex;flex-direction:column;min-width:0}
.pd-line1{display:flex;align-items:center;gap:6px;min-width:0;white-space:nowrap}
.pd-line1 .uname{flex:0 1 auto;overflow:hidden;text-overflow:ellipsis}
.pd-line1 .medal-row{flex-shrink:0}
.pd-author-info .uname{color:var(--primary);font-weight:700;font-size:19px;text-decoration:none}
.pd-time{font-size:14px;color:var(--muted)}
.follow-btn{background:#ff5b8f;color:#fff;border:none;padding:7px 20px;border-radius:20px;font-size:15px;font-weight:700;cursor:pointer;transition:.2s;flex-shrink:0}
.follow-btn:hover{opacity:.88}
.follow-btn.on{background:#e5e7eb;color:#6b7280}
/* 详情页作者区 + 统计区：统一背景块 */
.pd-head{background:var(--primary-soft,#eef2ff);border-radius:16px;padding:16px 14px 10px;margin-bottom:22px}
.pd-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:0;padding:10px 0 6px}
.pd-stats .st{text-align:center;display:flex;flex-direction:column;gap:2px}
.pd-stats .st b{font-size:17px;font-weight:800;color:var(--txt,#1f2937)}
.pd-stats .st span{font-size:12px;color:var(--muted,#64748b)}
.pd-actions{display:flex;justify-content:space-around;align-items:center;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.act{display:inline-flex;align-items:center;gap:5px;font-size:16px;color:var(--muted);font-style:normal}
.act b{font-weight:600;color:var(--txt)}
.act.like{background:none;border:none;padding:7px 20px;border-radius:20px;cursor:pointer;font-size:16px;color:var(--muted);transition:.2s;font-family:inherit}
.act.like:hover{background:var(--primary-soft)}
.act.like.on{color:var(--danger,#dc2626);font-weight:700;background:#fee2e2}

/* ---- 帖子图片九宫格 ---- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:12px}
.pg-cell{display:block;width:100%;aspect-ratio:1;border-radius:8px;overflow:hidden;background:#eceff4}
.pg-cell img{width:100%;height:100%;object-fit:cover;display:block}
.post-grid[data-n="1"]{grid-template-columns:minmax(0,66%)}
.post-grid[data-n="1"] .pg-cell{aspect-ratio:auto}
.post-grid[data-n="1"] .pg-cell img{max-height:320px;object-fit:contain}
.post-grid[data-n="2"],
.post-grid[data-n="4"]{grid-template-columns:repeat(2,1fr)}
.pd-content img{max-width:100%;border-radius:8px}
.post-edited{margin-top:16px;padding-top:12px;border-top:1px dashed var(--line);font-size:12px;color:var(--warn)}
.mod-actions{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.btn-mini{padding:6px 14px;border-radius:8px;font-size:12px;background:var(--primary-soft);color:var(--primary);font-weight:600}
.btn-mini.danger{background:#fee2e2;color:var(--danger)}
.btn-mini.essence{background:#fee2e2;color:#b91c1c}
.btn-mini.top{background:#fef3c7;color:#92400e}

/* ---- 回复 ---- */
.reply-item{display:flex;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line)}
.reply-avatar{width:48px;height:48px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-size:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:600}
.reply-main{flex:1;min-width:0}
.reply-head{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.reply-head .uname{color:var(--primary);font-weight:600}
.reply-head .floor{margin-left:auto}
.reply-content{font-size:26px;line-height:1.7;margin-top:6px;word-break:break-word}
.reply-foot{display:flex;justify-content:flex-end;gap:8px;margin-top:6px}
.floor-tag{font-size:10px;background:var(--primary-soft);color:var(--primary);padding:1px 6px;border-radius:4px}

/* ---- 回复表单 ---- */
.reply-form{padding:14px 16px;border-top:1px solid var(--line);background:var(--card)}
.emoticon-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.emoji-btn{background:var(--primary-soft);color:var(--primary);padding:6px 12px;border-radius:8px;font-size:13px}
.char-count{font-size:12px;color:var(--muted)}
textarea.input{width:100%;min-height:80px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;resize:vertical;outline:none;transition:.2s}
textarea.input:focus,input.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.15)}
.emoji-panel{display:none;grid-template-columns:repeat(8,1fr);gap:2px;margin-bottom:10px;padding:8px;background:var(--bg);border-radius:8px}
.emoji-panel.show{display:grid}
.emoji-panel span{cursor:pointer;font-size:22px;text-align:center;padding:4px;border-radius:6px}
.emoji-panel span:hover{background:var(--primary-soft)}
.btn-primary{width:100%;padding:12px;border-radius:10px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;margin-top:10px}
.btn-primary:disabled{opacity:.6}

/* ---- LOGIN/REGISTER ---- */
.auth-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;padding:24px}
.auth-brand{font-size:26px;font-weight:800;margin-bottom:20px;color:var(--primary)}
.auth-card{width:100%;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.auth-card h2{font-size:18px;margin-bottom:18px;text-align:center}
.input{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:10px;font-size:14px;outline:none;transition:.2s;margin-bottom:12px}
.field-hint{font-size:12px;color:var(--muted);margin:-6px 0 12px}
.auth-switch{text-align:center;font-size:13px;color:var(--muted);margin-top:14px}
.auth-switch a{color:var(--primary);font-weight:600}
.alert-box{padding:11px 14px;border-radius:8px;font-size:13px;margin-bottom:14px}
.alert-box.err{background:#fee2e2;color:var(--danger);border:1px solid #fecaca}
.alert-box.ok{background:#dcfce7;color:var(--ok);border-color:#bbf7d0}

/* ---- 发帖页 ---- */
.page-title{padding:14px 16px 0;font-size:15px;font-weight:700}
.detail-form{padding:4px 0}
.form-board{margin:0 16px 12px;font-size:13px;color:var(--muted)}

/* ---- 分页 + 每页条数 ---- */
.pager{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;padding:16px}
.pg-btn{min-width:34px;height:34px;padding:0 10px;border-radius:8px;background:var(--card);color:var(--txt);font-size:13px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line)}
.pg-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.page-size-bar{display:flex;align-items:center;gap:8px;justify-content:center;padding:6px 16px 16px;font-size:13px;color:var(--muted)}
.size-btn{padding:5px 12px;border-radius:8px;border:1px solid var(--line);background:var(--card);font-size:13px}
.size-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---- 日志时间线 ---- */
.log-list{list-style:none;padding:6px 0}
.log-item{display:flex;gap:10px;padding:10px 16px;font-size:13px;align-items:flex-start}
.log-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);margin-top:6px;flex-shrink:0}
.log-time{color:var(--muted);font-size:12px;min-width:120px}
.log-action{color:var(--primary);font-weight:600}
.log-detail{color:var(--muted)}

/* ---- 我的页面 ---- */
.profile-head{display:flex;align-items:center;gap:14px;padding:22px 16px;background:linear-gradient(120deg,var(--primary),var(--primary-dark));color:#fff}
.profile-av{width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700}
.profile-name{font-size:17px;font-weight:700}
.profile-uid{font-size:12px;opacity:.85;margin-top:3px}

/* ---- 空状态 ---- */
.empty{padding:40px 16px;text-align:center;color:var(--muted);font-size:14px}
.empty .e-ico{font-size:40px;display:block;margin-bottom:10px}

/* ---- Toast ---- */
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%) translateY(20px);background:rgba(17,24,39,.92);color:#fff;padding:10px 20px;border-radius:24px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:999;max-width:86%;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---- 底部导航 ---- */
.bottom-nav{position:sticky;bottom:0;background:var(--card);border-top:1px solid var(--line);display:flex;z-index:40}
.nav-item{flex:1;padding:8px 0 9px;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;color:var(--muted)}
.nav-item.active{color:var(--primary)}
.nav-ico{font-size:18px}
@media screen and (min-width:769px){
  .bottom-nav{position:absolute;bottom:0;left:0;right:0}
}

/* ---- 帖子详情页文字统一字号（最新评论置顶等） ---- */
.reply-content,.reply-content *{font-size:26px !important}
.reply-form,.reply-form *{font-size:14px !important}

/* ---- 首页与板块列表文字统一 14px ---- */
.card-title,.board-name,.board-desc,.board-meta,
.tool-btn,.section-head h3,.btn-mini,
.post-item .post-title,.post-title-text,.post-meta,.post-title .tag,
.post-item .post-meta span,.pager,.pg,.page-size-bar,.size-btn,
.log-item,.log-time,.log-action,.log-detail{font-size:14px !important}
.back-bar,.back-bar *{font-size:14px !important}

/* ---- 传统 BBS 帖子列表 ---- */
.post-item .post-title-text{color:#0000EE;text-decoration:underline}
.post-item .post-tags{color:var(--danger,#dc2626);font-weight:700}
.post-item .post-tags .tag{color:var(--danger,#dc2626);background:none;font-weight:700}
.post-item .post-order{color:var(--muted,#64748b)}
.post-item .post-meta{display:flex!important;align-items:center!important;justify-content:flex-start!important;gap:0!important;}
.post-item .post-meta .by{color:var(--muted,#64748b)}
.post-item .post-meta .stat{color:var(--txt,#1f2937);font-weight:600}
.post-item .post-meta .time{color:var(--muted,#64748b)}

/* ---- 板块帖子列表：恢复默认卡片样式，加大字号 ---- */
.post-item .post-title{font-size:16px!important;font-weight:600!important}
.post-item .post-title-text{color:var(--txt,#1f2937)!important;text-decoration:none!important}
.post-item .post-meta{display:flex!important;align-items:center!important;justify-content:space-between!important;gap:8px!important;font-size:14px!important}
.post-item .post-meta .by{color:var(--muted,#64748b)!important;flex:1!important;min-width:0!important}
.post-item .post-meta .stat{display:flex!important;gap:12px!important;color:var(--muted,#64748b)!important;font-weight:400!important}
.post-item .post-meta .time{color:var(--muted,#64748b)!important}

/* ---- 个人主页 ---- */
.profile-sig{font-size:14px;color:#fff;margin-top:4px;word-break:break-all}
.follow-stats{display:flex;gap:14px;margin-top:6px;font-size:14px}
.fs-item{color:var(--muted,#64748b);text-decoration:none}
.fs-item b{color:var(--txt,#1f2937)}
.fs-item.on{color:var(--brand,#3b82f6);font-weight:600}
/* 蓝色渐变头图内的统计文字使用浅色，保证可见 */
.profile-head .fs-item{color:rgba(255,255,255,.92)}
.profile-head .fs-item b{color:#fff}
.profile-head .fs-item.on{color:#fff;font-weight:700}
.user-row{display:flex;align-items:center;padding:8px 14px;text-decoration:none;border-bottom:1px solid var(--line,#f1f5f9)}
.user-row:last-child{border-bottom:none}
.av-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.av-opt{position:relative;border:2px solid transparent;border-radius:50%;cursor:pointer;overflow:hidden}
.av-opt img{width:100%;height:auto;aspect-ratio:1;object-fit:cover;display:block;border-radius:50%}
.av-opt.on{border-color:var(--brand,#3b82f6);box-shadow:0 0 0 2px rgba(59,130,246,.25)}