:root{--sky:#38bdf8;--sky-deep:#0ea5e9;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;}
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    height:100vh;overflow:hidden;display:flex;flex-direction:column;background:#f1f5f9;color:var(--ink);
    font-family:"Noto Sans JP","Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif;
  }

  .chip{position:absolute;top:-9px;right:-6px;z-index:6;font-size:10px;line-height:1;font-weight:700;color:#0369a1;
    background:#e0f2fe;border-radius:4px;padding:2px 4px;pointer-events:none;white-space:nowrap;}
  .cap{position:absolute;top:6px;left:12px;z-index:6;font-size:11px;font-weight:700;letter-spacing:.08em;color:#94a3b8;pointer-events:none;}
  .toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%,14px);z-index:99;background:rgba(15,23,42,.92);
    color:#fff;font-size:13px;padding:9px 18px;border-radius:999px;opacity:0;pointer-events:none;transition:.25s;max-width:80vw;}
  .toast.on{opacity:1;transform:translate(-50%,0);}

  /* ---------- 区域1 页头 ---------- */
  .r1{position:sticky;top:0;z-index:40;height:96px;flex:0 0 96px;display:flex;align-items:center;gap:14px;
    padding:0 26px;background:#fff;border-bottom:1px solid var(--line);}
  .r1 .logo{width:60px;height:60px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;
    font-weight:900;color:var(--sky-deep);font-size:20px;flex:0 0 60px;text-decoration:none;position:relative;}
  .r1 .logo:hover{border-color:var(--sky);}
  .r1 .sitname{font-weight:900;font-size:26px;letter-spacing:.04em;white-space:nowrap;color:var(--ink);
    text-decoration:none;position:relative;padding:4px 8px;}
  .r1 .sitname:hover{color:var(--sky-deep);}
  .r1 .search{flex:1;display:flex;align-items:center;gap:8px;padding:6px 8px 6px 18px;background:#f8fafc;
    border:1px solid var(--line);border-radius:999px;position:relative;}
  .r1 .search input{border:0;outline:0;flex:1;font:inherit;font-size:14px;background:transparent;color:var(--ink);}
  .r1 .search button{border:0;border-radius:999px;background:var(--sky);color:#fff;font:inherit;font-weight:700;padding:8px 20px;cursor:pointer;}
  .r1 .search button:hover{background:var(--sky-deep);}
  .r1 .user{display:flex;flex-direction:column;align-items:center;gap:4px;margin-left:6px;}
  .r1 .avatar{width:54px;height:54px;border-radius:50%;border:2px solid var(--line);
    background:linear-gradient(135deg,#f8fafc,#e2e8f0);display:grid;place-items:center;font-size:22px;
    cursor:pointer;text-decoration:none;position:relative;color:var(--ink);}
  .r1 .uname{font-size:12px;color:#334155;background:#f1f5f9;border:1px solid var(--line);border-radius:6px;
    padding:2px 8px;cursor:pointer;text-decoration:none;position:relative;}
  .r1 .uname:hover{background:var(--sky);border-color:var(--sky);color:#fff;}

  /* ---------- 区域c1：整体左右留白，居中放置 ---------- */
  .c1wrap{flex:1;min-height:0;display:flex;justify-content:center;padding:16px 0;}
  .c1{width:58%;display:flex;gap:14px;min-height:0;}

  /* c1.1 左栏（占 c1 宽度约 29%） */
  .c11{
    flex:0 0 29%;display:flex;flex-direction:column;align-items:center;gap:18px;
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 14px;
  }
  .c1111{position:relative;width:48%;aspect-ratio:1/1;border-radius:50%;border:2px solid var(--line);
    background:linear-gradient(135deg,#f8fafc,#e2e8f0);display:grid;place-items:center;font-size:44px;flex:0 0 auto;}
  .c112{position:relative;width:70%;background:#f8fafc;border:1px solid var(--line);border-radius:10px;
    padding:10px 12px;text-align:center;}
  .c112 .nm{font-size:18px;font-weight:900;line-height:1.3;}
  .c112 .lv{font-size:11px;color:var(--muted);margin-top:4px;}
  .c112 .lv b{color:var(--sky-deep);}
  /* c1.1.3 / c1.1.4：不要框，只有文本，点击文字即操作 */
  .c113{position:relative;width:46%;font:inherit;font-size:14px;font-weight:700;cursor:pointer;
    border:1px solid var(--line);background:#f8fafc;color:var(--ink);border-radius:9px;padding:9px 6px;transition:.18s;}
  .c113:hover{background:#e0f2fe;border-color:var(--sky);}
  .c113.liked{background:var(--sky);border-color:var(--sky);color:#fff;}
  .c114{margin-top:auto;width:56%;min-height:36px;}
  .c114 button{position:relative;font:inherit;font-size:14px;font-weight:700;cursor:pointer;width:100%;
    border:1px solid #fecdd3;background:#fff;color:#e11d48;border-radius:9px;padding:8px 6px;transition:.18s;}
  .c114 button:hover{background:#e11d48;border-color:#e11d48;color:#fff;}

  /* c1.2 右栏 */
  .c12{flex:1;min-width:0;display:flex;flex-direction:column;gap:14px;min-height:0;}

  /* c1.2.1 个人主页背景（约占右栏高度 1/3） */
  .c121{position:relative;flex:0 0 33%;border:1px solid var(--line);border-radius:14px;overflow:hidden;
    background:linear-gradient(120deg,#0ea5e9,#6366f1 55%,#22d3ee);}
  .c121 .hint{position:absolute;left:16px;bottom:12px;color:#fff;font-size:12px;opacity:.9;}

  /* 背景下方：文章区 + c1.back */
  .c12row{flex:1;min-height:0;display:flex;gap:12px;}
  .c13col{flex:1;min-width:0;display:flex;flex-direction:column;gap:10px;min-height:0;}

  /* c1.2.2 站内搜索（靠右） */
  .c122{display:flex;justify-content:flex-end;}
  .c122 .box{position:relative;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
    border-radius:999px;padding:5px 6px 5px 14px;width:26%;min-width:210px;}
  .c122 .box form{display:flex;align-items:center;gap:8px;flex:1;min-width:0;}
  .c122 input{border:0;outline:0;flex:1;min-width:0;font:inherit;font-size:13px;background:transparent;color:var(--ink);}
  .c122 button{border:0;border-radius:999px;background:var(--sky);color:#fff;font:inherit;font-weight:700;font-size:12px;padding:6px 14px;cursor:pointer;}
  .c122 button:hover{background:var(--sky-deep);}

  /* c1.3 文章区（内部滚动，右侧配 c1.block 滑块） */
  .c13wrap{flex:1;min-height:0;display:flex;gap:10px;}
  .c13{flex:1;min-width:0;overflow-y:auto;padding-right:4px;
    display:flex;flex-direction:column;gap:12px;
    scrollbar-width:none;-ms-overflow-style:none;}          /* 只保留 c1.block 一条滑块 */
  .c13::-webkit-scrollbar{width:0;height:0;}

  /* 文章行：封面占 1/3，右侧是标题内容 */
  .row{position:relative;display:grid;grid-template-columns:33% 1fr;gap:12px;background:#fff;
    border:1px solid var(--line);border-radius:12px;padding:12px;transition:.18s;}
  .row:hover{border-color:var(--sky);box-shadow:0 8px 20px rgba(15,23,42,.08);}
  .cov{position:relative;border-radius:9px;min-height:96px;cursor:pointer;}
  .txt{position:relative;display:flex;flex-direction:column;gap:6px;min-width:0;cursor:pointer;}
  .txt h3{margin:0;font-size:16px;line-height:1.4;}
  .txt h3:hover{text-decoration:underline;}
  .txt p{margin:0;font-size:12.5px;line-height:1.75;color:#475569;}
  .ft{margin-top:auto;display:flex;align-items:center;font-size:11px;color:var(--muted);}
  .share{position:relative;margin-left:auto;font-size:12px;font-weight:700;color:#0369a1;background:#e0f2fe;
    border:1px solid #bae6fd;border-radius:999px;padding:3px 11px;cursor:pointer;transition:.18s;}
  .share:hover{background:var(--sky);border-color:var(--sky);color:#fff;}
  .empty{font-size:13px;color:var(--muted);text-align:center;padding:30px 10px;line-height:1.9;
    background:#fff;border:1px dashed var(--line);border-radius:12px;}

  /* c1.block 滑块 */
  .slider{flex:0 0 16px;position:relative;border-radius:999px;background:#e2e8f0;touch-action:none;}
  .slider .thumb{position:absolute;left:0;top:0;width:16px;border-radius:999px;background:var(--sky);
    cursor:grab;box-shadow:0 2px 6px rgba(15,23,42,.2);}
  .slider .thumb:active{cursor:grabbing;}

  /* 未登录时的提示（不显示自己的个人界面） */
  .need-login{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:40px;text-align:center;}
  .need-login .nl-face{width:96px;height:96px;border-radius:50%;border:2px solid var(--line);
    background:linear-gradient(135deg,#f8fafc,#e2e8f0);display:grid;place-items:center;font-size:42px;}
  .need-login h2{margin:0;font-size:20px;}
  .need-login p{margin:0;font-size:13px;color:var(--muted);}
  .need-login .nl-btn{font-size:14px;font-weight:700;color:#fff;background:var(--sky);border-radius:999px;
    padding:10px 28px;text-decoration:none;transition:.18s;}
  .need-login .nl-btn:hover{background:var(--sky-deep);}

  /* c1.back 空白背景竖条 */
  .c1back{position:relative;flex:0 0 16px;background:#ffffff;border:1px solid var(--line);border-radius:10px;}
  .c1back span{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);writing-mode:vertical-rl;
    font-size:10px;font-weight:700;letter-spacing:.12em;color:#cbd5e1;}

  /* ---------- 区域4 页脚 ---------- */
  .r4{flex:0 0 auto;display:flex;align-items:center;gap:20px;padding:16px 26px;background:#fff;border-top:1px solid var(--line);}
  .r4 .logo{width:42px;height:42px;border-radius:9px;border:1px solid var(--line);display:grid;place-items:center;font-weight:900;color:var(--sky-deep);font-size:15px;flex:0 0 42px;text-decoration:none;}
  .r4 .sitname{font-size:17px;font-weight:900;text-decoration:none;color:var(--ink);}
  .r4 .beian{flex:1;font-size:12px;color:#475569;text-align:center;background:#f8fafc;border:1px solid var(--line);border-radius:9px;padding:10px;line-height:1.6;}
  .r4 .contact{font-size:12px;color:#475569;text-align:right;line-height:1.7;background:#f8fafc;border:1px solid var(--line);border-radius:9px;padding:10px 12px;}

/* ================= 移动端适配（空间页） ================= */
@media (max-width: 1024px) {
  body { height: auto !important; overflow: auto !important; }
  .c1wrap { padding: 12px 0; }
  .c1 { width: 100% !important; flex-direction: column; gap: 12px; }
  .c11 { flex: 0 0 auto; flex-direction: row; align-items: center; flex-wrap: wrap; gap: 12px; padding: 14px; }
  .c1111 { width: 64px; height: 64px; flex: 0 0 64px; font-size: 26px; }
  .c112 { flex: 1; width: auto !important; text-align: left; align-items: flex-start; }
  .c113, .c114 { width: auto !important; margin-top: 0 !important; font-size: 13.5px; }
  .c1back { display: none; }
  .c121 { min-height: 130px; }
  .c12row { flex-direction: column; }
  .c13col { width: 100%; }
  .c13 { max-height: none !important; overflow: visible; padding-right: 0; gap: 12px; }
  .slider { display: none; }
  .row { grid-template-columns: 1fr; gap: 10px; }
  .cov { height: 170px; }
}
@media (max-width: 480px) {
  .cov { height: 150px; }
  .c121 { min-height: 110px; }
}


/* ================= 移动端适配（页眉 / 页脚） ================= */
@media (max-width: 1024px) {
  .r1 { height: auto !important; flex: 0 0 auto !important; flex-wrap: wrap; padding: 10px 14px; gap: 10px; }
  .r1 .logo { width: 46px; height: 46px; flex: 0 0 46px; font-size: 17px; border-radius: 10px; }
  .r1 .sitname { font-size: 20px; padding: 2px 6px; }
  .r1 .search { order: 3; flex: 1 0 100%; padding: 5px 6px 5px 14px; }
  .r1 .search input { font-size: 13.5px; }
  .r1 .search button { padding: 7px 16px; font-size: 13px; }
  .r1 .user { flex-direction: row; align-items: center; gap: 8px; margin-left: auto; }
  .r1 .avatar { width: 40px; height: 40px; font-size: 16px; }
  .r1 .uname { font-size: 11px; padding: 2px 6px; }
  .r4 { flex-wrap: wrap; padding: 14px; gap: 10px; }
  .r4 .logo { font-size: 18px; }
  .r4 .beian { flex: 1 0 100%; order: 3; text-align: left; }
  .r4 .contact { text-align: left; margin-left: auto; }
}
@media (max-width: 480px) {
  .r1 { padding: 8px 10px; gap: 8px; }
  .r1 .sitname { font-size: 17px; }
  .r1 .search { padding-left: 12px; }
  .r4 { font-size: 12px; }
}


/* --- 手机端修正：背景条固定高度、搜索框整行 --- */
@media (max-width: 1024px) {
  .c121 { flex: 0 0 auto !important; height: 150px; min-height: 150px; }
  .c122 { flex: 0 0 auto; }
  .c122 > *, .c122 .box { width: 100% !important; min-width: 0 !important; }
  .c122 input { flex: 1; min-width: 0; }
}


/* ================= 移动端兜底：不允许横向溢出 ================= */
@media (max-width: 1024px) {
  html, body { max-width: 100%; overflow-x: hidden; }
  .r1 .search, .r1 .search input { min-width: 0; }
  .r4 { position: relative !important; margin-top: auto; }   /* 手机上页脚跟随内容：用 relative（不能用 static，否则背景层会铺满整页） */        /* 手机上页脚跟随内容，不吸在屏幕底部 */
  .r4 .beian, .r4 .contact { overflow-wrap: anywhere; }
  .card, .cards, .panel, .col, .row, .item, .msg, .post, .c13, .b2-scroll { min-width: 0; }
  .card .meta .t, .wall .msg, .post .ttl, .row h3, .row p,
  .card .cover .c-title, .paper h1 { overflow-wrap: anywhere; word-break: break-word; }
}