/* ip120.cn — 全站样式 */
:root{
  --bg:#e8e8e8;--bg-secondary:#f3f3f3;--bg-main:#fff;
  --text:#000;--text-secondary:#727272;--description:#232323;
  --border:#e6e6e6;--accent:#2563eb;--ok:#15803d;--warn:#b45309;--err:#c62828;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --shadow:0 10px 10px rgba(0,0,0,.1);
}
html[data-theme=dark]{
  --bg:#222;--bg-secondary:#444;--bg-main:#333;
  --text:#fff;--text-secondary:#999;--description:#ddd;
  --border:#4a4a4a;--accent:#60a5fa;--ok:#4ade80;--warn:#fbbf24;--err:#f87171;
  --shadow:0 10px 10px rgba(0,0,0,.35);
}
@media (prefers-color-scheme:dark){
  html:not([data-theme=light]){
    --bg:#222;--bg-secondary:#444;--bg-main:#333;
    --text:#fff;--text-secondary:#999;--description:#ddd;
    --border:#4a4a4a;--accent:#60a5fa;--ok:#4ade80;--warn:#fbbf24;--err:#f87171;
    --shadow:0 10px 10px rgba(0,0,0,.35);
  }
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;min-height:100vh}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:12px}
@media (min-width:768px){.container{padding:15px 24px 40px}}

/* 顶部导航 */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--bg-main);border-radius:32px;box-shadow:var(--shadow);padding:8px 12px;position:sticky;top:12px;z-index:10}
.topbar nav{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.topbar nav::-webkit-scrollbar{display:none}
.topbar nav a{white-space:nowrap;padding:8px 16px;border-radius:20px;color:var(--description);font-size:14px;line-height:20px}
.topbar nav a:hover{background:var(--bg-secondary)}
.topbar nav a.active{background:var(--bg-secondary);font-weight:500;color:var(--text)}
.theme-btn{flex:none;width:36px;height:36px;border:0;border-radius:50%;background:var(--bg-secondary);color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center}
.theme-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
html[data-theme=dark] .theme-btn .sun,html:not([data-theme=dark]) .theme-btn .moon{display:none}
@media (prefers-color-scheme:dark){html:not([data-theme=light]) .theme-btn .sun{display:none}html:not([data-theme=light]) .theme-btn .moon{display:block}}

/* 页面标题 */
h1{font-size:24px;font-weight:700;margin:28px 0 4px;line-height:1.3}
@media (max-width:767px){h1{font-size:20px;margin-top:20px}}
.desc{color:var(--text-secondary);font-size:14px;margin:0 0 17px}
.desc a{color:var(--accent)}

/* 卡片 */
.card{background:var(--bg-main);border-radius:8px;box-shadow:var(--shadow);padding:20px;margin-bottom:24px}
@media (min-width:768px){.card{padding:24px 28px}}
.card h2{font-size:16px;font-weight:700;margin:0 0 12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.card h2 small{font-weight:400;color:var(--text-secondary);font-size:12px}
.card h3{font-size:14px;font-weight:600;margin:16px 0 8px;color:var(--description)}
.card p{margin:0 0 8px;color:var(--description)}
.card .note{font-size:12px;color:var(--text-secondary);line-height:1.6}
.card .note code{font-family:var(--mono);background:var(--bg-secondary);padding:1px 5px;border-radius:4px}

/* 本机 IP 大字 */
.ip-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.ip-grid{grid-template-columns:1fr 1fr}}
.ip-box{background:var(--bg-secondary);border-radius:8px;padding:16px 18px;min-height:96px}
.ip-box .label{font-size:12px;color:var(--text-secondary);margin-bottom:6px;display:flex;justify-content:space-between;align-items:center}
.ip-box .ip{font-family:var(--mono);font-size:22px;font-weight:600;word-break:break-all;line-height:1.3}
@media (max-width:767px){.ip-box .ip{font-size:18px}}
.ip-box .geo{margin-top:6px;color:var(--description);font-size:13px}
.ip-box .ip.muted{color:var(--text-secondary);font-weight:400;font-size:15px}

/* 表格 */
.table-wrap{overflow-x:auto;margin:0 -4px}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}
th{text-align:left;font-weight:500;color:var(--text-secondary);font-size:12px;padding:8px;border-bottom:1px solid var(--border);white-space:nowrap}
td{padding:9px 8px;border-bottom:1px solid var(--border);vertical-align:top}
tr:last-child td{border-bottom:0}
td.mono,.mono{font-family:var(--mono);font-size:13px}
td .sub{display:block;color:var(--text-secondary);font-size:12px;margin-top:2px}
.group-row td{background:var(--bg-secondary);font-weight:600;font-size:13px;padding:6px 8px;color:var(--description)}
.copy{cursor:pointer;border-bottom:1px dashed var(--text-secondary)}
.copy:hover{color:var(--accent);border-color:var(--accent)}

/* 状态 */
.ok{color:var(--ok)}.err{color:var(--err)}.warn{color:var(--warn)}.muted{color:var(--text-secondary)}
.ms{color:var(--text-secondary);font-size:12px;font-family:var(--mono);white-space:nowrap}
.pill{display:inline-block;padding:1px 8px;border-radius:10px;font-size:12px;background:var(--bg-secondary);color:var(--description);margin-right:4px;white-space:nowrap}
.pill.ok{background:rgba(21,128,61,.12)}.pill.err{background:rgba(198,40,40,.12)}.pill.warn{background:rgba(180,83,9,.12)}
.spinner{display:inline-block;width:14px;height:14px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;vertical-align:-2px}
@keyframes spin{to{transform:rotate(360deg)}}

/* 表单 */
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
input[type=text]{flex:1;min-width:200px;padding:9px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg-secondary);color:var(--text);font:inherit;font-family:var(--mono);outline:none}
input[type=text]:focus{border-color:var(--accent)}
.btn{padding:9px 18px;border:0;border-radius:8px;background:var(--text);color:var(--bg-main);font:inherit;font-weight:500;cursor:pointer;white-space:nowrap}
.btn:hover{opacity:.85}.btn:disabled{opacity:.5;cursor:default}
.btn.secondary{background:var(--bg-secondary);color:var(--text)}

/* 连通性 */
.conn-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.conn-item{background:var(--bg-secondary);border-radius:8px;padding:10px 12px;display:flex;justify-content:space-between;align-items:center;gap:6px}
.conn-item .name{font-weight:500;font-size:13px}

/* 页脚 */
footer{color:var(--text-secondary);font-size:12px;text-align:center;padding:24px 0 12px;line-height:1.8}
footer a{color:var(--text-secondary)}footer a:hover{color:var(--accent)}
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%);background:var(--text);color:var(--bg-main);padding:8px 16px;border-radius:20px;font-size:13px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:99}
.toast.show{opacity:1}

/* ===== 首页新版布局 ===== */
.home-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:24px}
.home-grid .card{margin-bottom:0}
@media (min-width:900px){.home-grid{grid-template-columns:1fr 1fr}}
.ipsec{padding:4px 0 18px;position:relative}
.ipsec+.ipsec{border-top:1px solid var(--border);padding-top:18px}
.ipsec .label{font-size:12px;color:var(--text-secondary)}
.ipsec .flag-slot{position:absolute;right:0;top:4px}
.ipsec+.ipsec .flag-slot{top:18px}
.ipline{display:flex;align-items:center;gap:8px;margin:4px 0 12px;font-family:var(--mono);font-size:16px;word-break:break-all}
.icon-btn{border:0;background:none;padding:2px;cursor:pointer;color:var(--text-secondary);display:inline-flex;align-items:center}
.icon-btn:hover{color:var(--accent)}
.icon-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.fields .field{margin-bottom:10px}
.fields .k{font-size:12px;color:var(--text-secondary)}
.fields .v{font-size:14px;color:var(--text);margin-top:2px;min-height:20px}
.ipsec .fail{text-align:center;color:var(--text-secondary);padding:24px 0 8px}
.ipsec .fail .btn{margin-top:10px;padding:6px 16px}
.flag{width:28px;height:28px;border-radius:50%;object-fit:cover;box-shadow:0 0 0 1px var(--border);vertical-align:middle;background:var(--bg-secondary)}
.flag.sm{width:18px;height:18px;margin-right:6px;vertical-align:-4px}
.pill.cn{background:rgba(79,70,229,.12);color:#4338ca}
.pill.intl{background:rgba(22,163,74,.12);color:#15803d}
html[data-theme=dark] .pill.cn{color:#a5b4fc}html[data-theme=dark] .pill.intl{color:#86efac}
@media (prefers-color-scheme:dark){html:not([data-theme=light]) .pill.cn{color:#a5b4fc}html:not([data-theme=light]) .pill.intl{color:#86efac}}
.src-item{padding:12px 0;border-bottom:1px solid var(--border)}
.src-item:first-child{padding-top:0}.src-item:last-of-type{border-bottom:0}
.src-head{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px}
.src-head b{font-size:15px}
.src-ip{font-size:14px;color:var(--description);display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.src-ip .mono{font-size:14px}
.src-loc{font-size:14px;color:var(--description);margin-top:4px}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;flex-wrap:wrap}
.toolbar .info{color:var(--text-secondary);display:flex;align-items:center;gap:6px;font-size:13px}
.switch{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-size:14px;user-select:none}
.switch input{appearance:none;width:38px;height:22px;border-radius:11px;background:var(--bg-secondary);position:relative;transition:.2s;margin:0;cursor:pointer;box-shadow:inset 0 0 0 1px var(--border)}
.switch input::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:var(--bg-main);box-shadow:0 1px 3px rgba(0,0,0,.3);transition:.2s}
.switch input:checked{background:var(--accent)}.switch input:checked::after{left:18px}
.hide-ip .ipv{filter:blur(6px);user-select:none}
.conn-grid{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px 24px}
.conn-item{background:none;padding:0;display:block}
.conn-head{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.conn-head img{width:18px;height:18px;border-radius:4px}
.conn-head .name{font-weight:600;font-size:14px}
.conn-row{display:flex;align-items:center;gap:10px}
.conn-row .avg{font-family:var(--mono);font-weight:600;font-size:14px;min-width:52px}
.dots{display:flex;gap:5px;flex-wrap:wrap}
.dot{width:7px;height:7px;border-radius:50%;background:var(--border)}
.dot.g{background:#16a34a}.dot.y{background:#eab308}.dot.r{background:#dc2626}.dot.x{background:#9ca3af}

/* SEO 常见问题 */
.card.seo h3{font-size:14px;font-weight:600;margin:14px 0 4px;color:var(--text)}
.card.seo p{font-size:13px;color:var(--text-secondary);line-height:1.7;margin:0}
.faq-item+.faq-item{border-top:1px solid var(--border);padding-top:4px}