:root{--p:#ff8200;--l:#ff9a3c;--d:#ff6b00;--g:linear-gradient(135deg,#ff9a3c,#ff6b00)}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:#f5f6f8;color:#333;min-height:100vh}
button,input,textarea,select,a{font-family:inherit}
a{color:inherit;text-decoration:none}

/* 顶部栏 */
.topbar{position:sticky;top:0;z-index:50;height:56px;background:#fff;border-bottom:1px solid #ebebeb;box-shadow:0 1px 3px rgba(0,0,0,.03)}
.topbar-inner{width:1200px;margin:0 auto;height:100%;display:flex;align-items:center;gap:20px;padding:0 20px}
.logo{font-size:20px;font-weight:800;color:var(--p);flex:none}
.logo span{font-size:11px;font-weight:400;color:#bbb;margin-left:5px}
.nav{display:flex;align-items:center;gap:2px;flex:none}
.nav a{padding:6px 10px;border-radius:15px;font-size:13.5px;color:#666;transition:.15s}
.nav a:hover{background:#f5f6f8;color:var(--p)}
.nav a.active{color:var(--p);font-weight:600;background:#fff4e8}
.top-right{margin-left:auto;display:flex;align-items:center;gap:10px;flex:none}
.top-user{display:flex;align-items:center;gap:8px;font-size:13px;color:#555}
.top-user:hover{color:var(--p)}
.top-avatar{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff;background:var(--g);flex:none}
.auth-links{display:flex;align-items:center;gap:8px;font-size:13px}
.auth-links a{color:var(--p);font-weight:600}
.auth-links .sep{color:#d8dbe2}
.btn-logout{height:30px;padding:0 12px;border-radius:15px;border:1px solid #e8eaee;background:#fff;color:#8a8f99;font-size:12px;cursor:pointer}
.btn-logout:hover{border-color:var(--l);color:var(--p)}

/* 按钮 */
.btn{height:44px;padding:0 26px;border:0;border-radius:10px;cursor:pointer;font-size:14.5px;font-weight:600;letter-spacing:1px;transition:.18s}
.btn-p{color:#fff;background:var(--g);box-shadow:0 8px 20px rgba(255,107,0,.26)}
.btn-p:hover:not(:disabled){transform:translateY(-1px)}
.btn-p:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}
.btn-g{border:1px solid #e8eaee;background:#fff;color:#6b7280}
.btn-g:hover{border-color:var(--l);color:var(--p);background:#fffaf5}
.btn-d{color:#fff;background:linear-gradient(135deg,#ff6b6b,#e53935)}

/* 表单 */
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;font-weight:600;color:#3a4256;margin-bottom:7px}
.field label .opt{font-weight:400;color:#b0b5bf;font-size:11.5px;margin-left:4px}
.field input,.field select{width:100%;height:44px;padding:0 13px;font-size:14px;color:#1f2430;border:1px solid #e2e6f0;border-radius:10px;background:#f8f9fd;outline:none;transition:.2s}
.field textarea{width:100%;padding:12px 13px;font-size:14px;line-height:1.7;border:1px solid #e2e6f0;border-radius:10px;background:#f8f9fd;outline:none;resize:vertical;transition:.2s}
.field input::placeholder,.field textarea::placeholder{color:#b3bacb}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--l);background:#fff;box-shadow:0 0 0 3px rgba(255,130,0,.1)}
.field input.invalid{border-color:#e53935;background:#fff7f7}
.with-btn{position:relative}
.with-btn input{padding-right:52px}
.toggle{position:absolute;right:6px;top:0;height:44px;width:42px;border:0;background:none;cursor:pointer;color:#9aa3b8;font-size:12px}
.toggle:hover{color:var(--p)}
.err{min-height:15px;font-size:11.5px;line-height:15px;color:#e53935;padding-left:2px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.counter{text-align:right;font-size:12px;color:#9aa3b8;margin-top:5px}
.counter.over{color:#e53935;font-weight:600}

/* 卡片 */
.card{background:#fff;border:1px solid #f0f0f0;border-radius:12px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.side-card{background:#fff;border-radius:10px;padding:18px 20px;border:1px solid #f0f0f0;margin-bottom:16px}
.side-card h3{font-size:14px;font-weight:600;color:#333;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:'';width:3px;height:13px;border-radius:2px;background:var(--g)}
.side-card h3 .count{font-size:12px;font-weight:400;color:#a8adb6;margin-left:2px}

/* 头像 */
.avatar{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:700;flex:none;background:var(--g)}

/* 提示 */
.toast{position:fixed;left:50%;top:32px;transform:translate(-50%,-12px);padding:11px 22px;border-radius:9px;font-size:13.5px;color:#fff;background:#2b3038;box-shadow:0 8px 24px rgba(20,26,46,.24);opacity:0;pointer-events:none;transition:.26s;z-index:300;white-space:nowrap}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.ok{background:#0f9d58}
.toast.error{background:#e64545}

/* 弹窗 */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;background:rgba(20,26,46,.45);padding:24px}
.modal[hidden]{display:none}
.modal-card{width:600px;max-height:88vh;overflow-y:auto;background:#fff;border-radius:18px;padding:24px 28px;box-shadow:0 30px 70px rgba(20,26,60,.32)}
.modal-card.sm{width:420px}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.modal-head h3{font-size:18px}
.modal-close{border:0;background:none;cursor:pointer;font-size:22px;line-height:1;color:#b3bacb}
.modal-close:hover{color:var(--p)}
.modal-actions{display:flex;gap:12px;margin-top:18px;justify-content:flex-end}

/* 分页 */
.pager{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:22px;flex-wrap:wrap}
.pager button{min-width:34px;height:34px;padding:0 11px;border-radius:8px;border:1px solid #eef0f3;background:#fff;color:#555;font-size:13px;cursor:pointer;transition:.15s}
.pager button:hover:not(:disabled):not(.active){border-color:var(--l);color:var(--p);background:#fffaf5}
.pager button.active{background:var(--g);border-color:transparent;color:#fff;font-weight:600;cursor:default}
.pager button:disabled{opacity:.4;cursor:not-allowed}
.pager .dots{color:#b8bcc4;padding:0 3px}

/* 空状态 */
.empty{background:#fff;border:1px solid #f0f0f0;border-radius:10px;padding:70px 20px;text-align:center;color:#b8bcc4;font-size:14px}

/* 热门榜 */
.rank{list-style:none}
.rank li{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:13.5px;color:#4a5058;border-bottom:1px solid #f7f8fa}
.rank li:last-child{border-bottom:0}
.rank .no{flex:none;width:18px;text-align:center;font-size:12px;font-weight:700;color:#c4c9d1}
.rank li:nth-child(1) .no{color:var(--p)}
.rank li:nth-child(2) .no{color:var(--l)}
.rank li:nth-child(3) .no{color:#ffb066}
.rank .t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank .hot{font-size:11px;color:#b8bcc4;flex:none}

/* 搜索框 */
.search{position:relative}
.search input{width:100%;height:34px;padding:0 14px 0 36px;font-size:13px;border:1px solid #ebebeb;border-radius:17px;background:#f7f8fa;outline:none;color:#333}
.search input:focus{background:#fff;border-color:var(--l);box-shadow:0 0 0 3px rgba(255,130,0,.09)}
.search svg{position:absolute;left:12px;top:9px;color:#b8bcc4;pointer-events:none}

/* 图片放大 */
.lightbox{position:fixed;inset:0;z-index:250;background:rgba(0,0,0,.84);display:flex;align-items:center;justify-content:center}
.lightbox[hidden]{display:none}
.lightbox img{max-width:86vw;max-height:86vh;border-radius:8px;cursor:zoom-out}

/* ============================================================
 * 移动端适配（≤768px）
 * ============================================================ */
@media (max-width: 768px) {

  html, body {
    font-size: 15px;
    -webkit-text-size-adjust: 100%;
  }

  /* ---------- 顶部栏 ---------- */
  .topbar { height: 52px; }
  .topbar-inner {
    width: 100% !important;
    padding: 0 10px !important;
    gap: 6px !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .topbar-inner::-webkit-scrollbar { display: none; }
  .logo { font-size: 15px !important; white-space: nowrap; }
  .logo span { display: none !important; }
  .nav { gap: 0 !important; flex-shrink: 0; }
  .nav a {
    padding: 5px 7px !important;
    font-size: 12px !important;
    white-space: nowrap;
  }
  .search { display: none !important; }
  .top-right { gap: 6px !important; margin-left: auto; }
  .top-user span:not(.top-avatar) { display: none; }
  .top-avatar { width: 28px; height: 28px; font-size: 12px; }
  .btn-logout { height: 26px; padding: 0 8px; font-size: 11px; }
  .auth-links { font-size: 12px; gap: 5px; }
  .auth-links .sep { margin: 0; }

  /* ---------- 通用容器 ---------- */
  .page, .wrap, .frame {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px !important;
    box-sizing: border-box;
    height: auto !important;
    min-height: auto !important;
    border-radius: 12px !important;
  }
  .page {
    display: block !important;
    grid-template-columns: none !important;
    gap: 0 !important;
  }
  .page > main, .page > aside { width: 100% !important; }
  .page > aside {
    margin-top: 16px;
    display: none;
  }

  /* ---------- 登录 / 注册 / 找回密码 ---------- */
  .frame { display: block !important; }
  .brand { display: none !important; }
  .panel {
    padding: 24px 20px !important;
    max-height: none !important;    /* 取消 720px 限制，避免卡片内二次滚动 */
    overflow: visible !important;
  }
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr !important;  /* 密码 / 确认密码、密保问题改单列 */
    gap: 12px !important;
  }
  .security { padding: 12px 14px 10px !important; }
  .security-grid {
    grid-template-columns: 1fr !important;  /* 三个密保问题纵向排列 */
    gap: 12px !important;
  }
  .security-grid label { font-size: 12.5px !important; }
  .security-grid input {
    height: 44px !important;
    font-size: 16px !important;             /* 避免 iOS 聚焦缩放 */
  }
  .foot { font-size: 12.5px; }

  /* ---------- 安装向导 ---------- */
  .wrap { display: block !important; }
  .side { display: none !important; }
  .main { padding: 20px !important; }

  /* ---------- 表单 ---------- */
  .field input, .field select {
    height: 44px;
    font-size: 16px !important;
  }
  .field textarea {
    font-size: 16px !important;
    min-height: 100px;
  }
  .with-btn input { padding-right: 50px; }
  .toggle { height: 44px; font-size: 12px; }

  /* ---------- 按钮 ---------- */
  .btn {
    height: 44px !important;
    font-size: 14px !important;
    padding: 0 16px !important;
  }

  /* ---------- 标题 ---------- */
  h1 { font-size: 20px !important; }
  h2 { font-size: 18px !important; }

  /* ---------- 卡片 ---------- */
  .card { padding: 18px 16px !important; }
  .side-card { padding: 14px 16px !important; }
  .panel-card { border-radius: 10px; }
  .ph { padding: 18px 16px 0 !important; }
  .pane { padding: 16px !important; }

  /* ---------- 弹窗 ---------- */
  .modal { padding: 12px !important; align-items: flex-end; }
  .modal-card {
    width: 100% !important;
    max-width: 100% !important;
    padding: 18px 16px !important;
    border-radius: 14px;
    max-height: 90vh;
  }
  .modal-card.sm { width: 100% !important; }

  /* ---------- admin 统计 ---------- */
  .stats {
    grid-template-columns: 1fr 1fr !important;
    gap: 10px !important;
  }
  .stat { padding: 12px 14px !important; }
  .stat .v { font-size: 20px !important; }

  /* ---------- admin 帖子行 ---------- */
  .post { padding: 12px 14px !important; gap: 10px !important; }
  .post-acts {
    flex-direction: row !important;
    flex-wrap: wrap;
    gap: 6px !important;
    padding-left: 0 !important;
    width: 100%;
    margin-top: 8px;
  }
  .post-acts button { flex: 1 1 auto; min-height: 32px; }
  .post-imgs img { width: 48px !important; height: 48px !important; }
  .post-imgs .more { width: 48px !important; height: 48px !important; }

  /* ---------- config / install 主题配色 ---------- */
  .theme-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 8px !important;
  }
  .theme-card { padding: 10px 6px !important; }
  .preview { padding: 12px 14px !important; }
  .actions { flex-direction: column-reverse; }
  .actions .btn { width: 100%; }

  /* ---------- 用户主页 hero ---------- */
  .hero-body {
    flex-direction: column !important;
    align-items: center !important;
    text-align: center;
    padding: 0 16px 16px !important;
    margin-top: -36px !important;
    gap: 12px !important;
  }
  .hero-av {
    width: 72px !important;
    height: 72px !important;
    font-size: 28px !important;
  }
  .hero-info {
    padding-top: 0 !important;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .name-row { justify-content: center !important; }
  .name-row h1 {
    font-size: 18px !important;
    max-width: 100% !important;
  }
  .stats {
    justify-content: center;
    gap: 14px !important;
    flex-wrap: wrap;
  }
  .hero-acts {
    padding-top: 0 !important;
    flex-direction: row !important;
    justify-content: center;
    width: 100%;
  }
  .btn-follow, .btn-edit {
    flex: 1;
    max-width: 160px;
    justify-content: center;
  }

  /* ---------- useredit ---------- */
  .av-row {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 10px !important;
  }
  .av-big {
    width: 60px !important;
    height: 60px !important;
    font-size: 24px !important;
  }
  .color-picker {
    flex-wrap: wrap !important;
    gap: 8px !important;
    margin-bottom: 16px !important;
  }
  .chips { gap: 6px !important; }
  .chip {
    padding: 6px 12px !important;
    font-size: 12px !important;
  }
  .custom-hobby { flex-wrap: nowrap; }
  .tabs { padding: 12px 16px 0 !important; }
  .tab {
    padding: 10px 12px !important;
    font-size: 13px !important;
  }
  .follow-item { padding: 10px 0; }

  /* ---------- edit 发表页 ---------- */
  .composer { padding: 14px 14px 12px !important; }
  .previews {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
  }
  .previews.single { max-width: 100% !important; }
  .toolbar { flex-wrap: wrap; gap: 8px; }
  .toolbar .right {
    width: 100% !important;
    justify-content: space-between;
    margin-top: 6px;
  }
  .publish {
    height: 38px !important;
    padding: 0 20px !important;
  }
  .emoji-panel {
    width: calc(100vw - 40px) !important;
    max-width: 340px;
  }

  /* ---------- 帖子正文 ---------- */
  .post-text {
    font-size: 15px !important;
    line-height: 1.75 !important;
  }
  .post-imgs.c1 { max-width: 100% !important; }
  .post-imgs.c2, .post-imgs.c3 { gap: 4px !important; }

  /* ---------- 评论输入 ---------- */
  .cmt-input, .comment-input {
    font-size: 16px !important;
    height: 38px !important;
  }
  .cmt-submit, .comment-submit { height: 38px !important; }

  /* ---------- 搜索框 ---------- */
  .search-box { max-width: 100% !important; }

  /* ---------- 分页 ---------- */
  .pager button {
    min-height: 34px;
    padding: 0 10px;
    font-size: 12px;
  }

  /* ---------- 通用 ---------- */
  img { max-width: 100%; height: auto; }
  .avatar {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }
  .preview, .installed p b { word-break: break-all; }
  .empty {
    padding: 44px 16px !important;
    font-size: 13px;
  }
}