/* 9ping站长统计 · UI 设计系统（对标 Apple HIG / Google Material 的克制风格）*/
:root{
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Hiragino Sans","Microsoft YaHei","Nirmala UI","Leelawadee UI","Khmer UI","Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --bg:#f5f5f7; --surface:#fff; --surface-2:#fafafc;
  --text:#1d1d1f; --text-2:#6e6e73; --text-3:#767679;
  --line:#e5e5ea; --line-2:#d2d2d7;
  --accent:#0071e3; --accent-2:#0077ed; --accent-press:#0062c4;
  --green:#1b7a37; --red:#b3261e; --amber:#8a5a00;
  --radius:16px; --radius-sm:10px; --radius-xs:8px;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 10px 30px rgba(0,0,0,.07);
  --shadow-sm:0 1px 3px rgba(0,0,0,.06);
  /* #1 8px 网格间距阶(全站唯一来源,改一处全站随动) */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px;
  /* #10 发丝分割线:高分屏走真 0.5px 物理像素 */
  --hairline:1px;
  /* #76 骨架屏底色 */
  --skeleton:linear-gradient(90deg,var(--surface-2) 25%,var(--line) 37%,var(--surface-2) 63%);
  color-scheme:light dark;
}
@media (min-resolution:2dppx){:root{--hairline:0.5px}}
/* 按界面语言前置对应脚本字体：避免日文被中文字形渲染、补齐天城/泰/高棉脚本兜底 */
html[lang="ja"]{--font:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic",Meiryo,"Noto Sans JP","Segoe UI",sans-serif}
html[lang="zh-Hans"]{--font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei","Segoe UI",sans-serif}
html[lang="zh-Hant"]{--font:-apple-system,BlinkMacSystemFont,"PingFang TC","HarmonyOS Sans TC","Source Han Sans TC","Noto Sans CJK TC","Microsoft JhengHei","Segoe UI",sans-serif}
html[lang="hi"]{--font:"Nirmala UI","Noto Sans Devanagari",Mangal,-apple-system,"Segoe UI",sans-serif}
html[lang="th"]{--font:"Leelawadee UI","Noto Sans Thai","Sarabun",-apple-system,"Segoe UI",sans-serif}
html[lang="km"]{--font:"Khmer UI","Noto Sans Khmer","Kantumruy Pro",-apple-system,"Segoe UI",sans-serif}
html[lang="vi"]{--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",sans-serif}
/* 复杂脚本：上下标记需要更高行高，避免被裁切；泰文无词间空格允许按音节折行 */
html[lang="th"] body,html[lang="km"] body,html[lang="hi"] body{line-height:1.7}
html[lang="ja"] body,html[lang="zh-Hans"] body,html[lang="zh-Hant"] body{line-height:1.62;font-feature-settings:"palt" 1}
html[lang="th"]{word-break:break-word}
*{box-sizing:border-box}
html,body{margin:0}
/* #93 i18n 文本溢出防御:10 语言长词(德语复合词/URL/站点ID)不撑破布局。
   文本容器用 break-word(优先词边界);表格/代码等含长 token 的用 anywhere(可任意断) */
body,h1,h2,h3,h4,p,li,label,summary,.btn,.tag,.alert{overflow-wrap:break-word}
td,th,code,.mono,pre,.secret{overflow-wrap:anywhere}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{letter-spacing:-.02em;font-weight:600;margin:0}

/* 居中认证布局(#94 安全区:刘海/折叠屏不遮挡) */
.auth{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:max(24px,env(safe-area-inset-top)) max(24px,env(safe-area-inset-right)) max(24px,env(safe-area-inset-bottom)) max(24px,env(safe-area-inset-left))}
.auth main{width:100%;display:flex;justify-content:center}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:36px}
.auth .card{width:100%;max-width:400px}
.brand{display:flex;align-items:center;gap:9px;font-size:21px;font-weight:600;letter-spacing:-.02em}
.brand img,.hdrlogo{width:26px;height:26px;border-radius:7px;display:inline-block;vertical-align:middle;box-shadow:0 1px 2px rgba(0,0,0,.12)}
.sub{color:var(--text-2);font-size:13px;margin-top:4px}
.muted{color:var(--text-2);font-size:13px}

/* 表单 */
.field{margin-top:18px}
.label{display:block;font-size:13px;font-weight:500;color:var(--text-2);margin-bottom:7px}
.input{width:100%;padding:12px 14px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;border:1px solid var(--line-2);border-radius:var(--radius-sm);transition:border-color .15s,box-shadow .15s;outline:none}
.input:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(0,113,227,.15)}
.input::placeholder{color:#aeaeb2}
.input.code{letter-spacing:8px;text-align:center;font-size:20px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;width:100%;padding:12px 18px;font-size:15px;font-weight:500;font-family:inherit;border:1px solid transparent;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,transform .04s,box-shadow .15s;line-height:1.2}
.btn:active{transform:translateY(.5px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-2)}
.btn-primary:active{background:var(--accent-press)}
.btn-ghost{background:#f0f0f3;color:var(--text);border-color:transparent}
.btn-ghost:hover{background:#e8e8ec}
.btn-outline{background:#fff;color:var(--accent);border-color:var(--line-2)}
.btn-outline:hover{background:#f5f8ff;border-color:var(--accent)}
.btn-danger{background:#fff;color:var(--red);border-color:#f3c9c5}
.btn-danger:hover{background:#fff5f4}
.btn-sm{width:auto;padding:8px 14px;font-size:13px}
.btnrow{display:flex;gap:10px;margin-top:12px}
.btnrow .btn{flex:1}

/* 提示 */
.alert{padding:11px 14px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:14px;line-height:1.6}
.alert-err{background:#fff0ef;color:var(--red);border:1px solid #ffd6d2}
.alert-ok{background:#e9f9ee;color:var(--green);border:1px solid #c2efce}
.alert-warn{background:#fff8ec;color:var(--amber);border:1px solid #ffe2b0}

/* 等宽 / 代码块 */
.mono{font-family:var(--mono)}
.codebox{background:#1d1d1f;color:#30d158;border-radius:var(--radius-sm);padding:14px;font-family:var(--mono);font-size:13.5px;line-height:1.9;letter-spacing:1px;width:100%;border:0;resize:none;word-break:break-all}
.secret{background:#1d1d1f;color:#30d158;border-radius:var(--radius-xs);padding:10px 12px;font-family:var(--mono);font-size:13px;letter-spacing:1px;word-break:break-all}

.foot{text-align:center;margin-top:20px;font-size:13px;color:var(--text-2)}
.status{font-size:13px;min-height:18px;margin-top:8px;text-align:center;color:var(--green)}
:focus-visible{outline:3px solid #0071e3;outline-offset:2px}
/* 移动端表单字号 ≥16px，避免 iOS Safari 聚焦时自动放大 */
@media (max-width:768px){.input{font-size:16px}}

/* —— 语言切换器（地球/国旗下拉，复用 1xroll 风格，适配浅色设计系统）—— */
.lang-dd{position:relative;display:inline-flex}
.lang-dd.fixed{position:fixed;top:max(16px,env(safe-area-inset-top));right:max(18px,env(safe-area-inset-right));z-index:400}
.lang-btn{display:flex;align-items:center;gap:5px;background:#fff;border:1px solid var(--line-2);border-radius:999px;padding:4px 9px 4px 4px;cursor:pointer;box-shadow:0 1px 2px rgba(0,0,0,.05)}
.lang-btn:hover{background:#f5f5f7}
.btn-flag{width:24px;height:24px;border-radius:50%;object-fit:cover;display:block;flex:0 0 auto}
.lang-caret{font-size:11px;color:var(--text-3);line-height:1}
.lang-panel{display:none;position:absolute;right:0;top:42px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:7px;min-width:196px;box-shadow:0 14px 40px rgba(0,0,0,.16);z-index:500}
.lang-panel.open{display:flex;flex-direction:column;gap:1px}
.lp-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;color:var(--text);font-size:14px;text-decoration:none;white-space:nowrap}
.lp-item:hover{background:#f5f5f7;text-decoration:none}
.lp-item.active{background:#eef5ff;color:var(--accent);font-weight:600}
.lp-flag{width:22px;height:22px;border-radius:50%;object-fit:cover;flex:0 0 auto}

/* —— 深色模式（认证页/后台/演示页基底；token 重定义 + 个别硬编码白底修补）—— */
@media (prefers-color-scheme:dark){
  :root{
    --bg:#000000; --surface:#1c1c1e; --surface-2:#161617;
    --text:#f5f5f7; --text-2:#a1a1a6; --text-3:#8e8e93;
    --line:#2c2c2e; --line-2:#3a3a3c;
    --accent:#0a84ff; --accent-2:#409cff; --accent-press:#0060df;
    --green:#30d158; --red:#ff453a; --amber:#ffd60a;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 40px rgba(0,0,0,.5);
    --shadow-sm:0 1px 3px rgba(0,0,0,.5);
  }
  .input{background:#1c1c1e;color:var(--text)}
  .input::placeholder{color:#6e6e73}
  .btn-ghost{background:#2c2c2e;color:var(--text)}
  .btn-ghost:hover{background:#3a3a3c}
  .btn-outline{background:transparent}
  .btn-outline:hover{background:rgba(10,132,255,.12)}
  .btn-danger{background:transparent}
  .btn-danger:hover{background:rgba(255,69,58,.12)}
  .alert-err{background:rgba(255,69,58,.14);border-color:rgba(255,69,58,.4)}
  .alert-ok{background:rgba(48,209,88,.14);border-color:rgba(48,209,88,.4)}
  .alert-warn{background:rgba(255,214,10,.14);border-color:rgba(255,214,10,.4)}
  .lang-btn{background:#1c1c1e;border-color:#3a3a3c}
  .lang-btn:hover{background:#2c2c2e}
  .lang-panel{background:#1c1c1e;border-color:#2c2c2e}
  .lp-item:hover{background:#2c2c2e}
  .lp-item.active{background:rgba(10,132,255,.18)}
}

/* 屏幕阅读器专用(视觉隐藏,可被读出) */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* #44 onBlur 校验视觉态 */
.inp-invalid{border-color:#e5484d !important;box-shadow:0 0 0 3px rgba(229,72,77,.15) !important}
.inp-err{display:block;margin-top:4px;font-size:12px;color:#c5210a;line-height:1.4}
@media(prefers-color-scheme:dark){.inp-err{color:#ff6b6b}}

/* ========= 批 B 架构归一组件库（#10 #76 #78 全站可复用）========= */

/* #10 发丝分割线工具类:用 box-shadow 而非 border 实现真 0.5px */
.hr,.divider{height:0;border:0;border-top:var(--hairline) solid var(--line);margin:var(--s4) 0}
.hr-flush{height:var(--hairline);background:var(--line);border:0;margin:0}

/* #76 骨架屏(局部 loading,绝不全屏大白圈) */
.skeleton{background:var(--skeleton);background-size:400% 100%;border-radius:var(--radius-xs);animation:skeletonSlide 1.4s ease-in-out infinite}
.skeleton-text{height:1em;margin:.35em 0;border-radius:4px}
.skeleton-text.w-60{width:60%}.skeleton-text.w-80{width:80%}.skeleton-text.w-40{width:40%}
.skeleton-card{height:96px;border-radius:var(--radius-sm)}
.skeleton-row{height:40px;margin-bottom:8px;border-radius:var(--radius-xs)}
@keyframes skeletonSlide{0%{background-position:100% 0}100%{background-position:0 0}}

/* #76 按钮级 spinner(按钮内联,不锁全屏);用法:button.is-loading */
.btn.is-loading,button.is-loading{position:relative;color:transparent !important;pointer-events:none}
.btn.is-loading::after,button.is-loading::after{content:"";position:absolute;top:50%;left:50%;width:16px;height:16px;margin:-8px 0 0 -8px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;color:#fff;animation:btnSpin .6s linear infinite}
.btn-outline.is-loading::after,.btn-ghost.is-loading::after{color:var(--accent)}
@keyframes btnSpin{to{transform:rotate(360deg)}}

/* #78 空状态组件(杜绝简陋文字:线条插画 + 标题 + 描述 + CTA) */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:var(--s7) var(--s4);gap:var(--s2)}
.empty-state .es-art{width:72px;height:72px;color:var(--line-2);margin-bottom:var(--s2)}
.empty-state .es-art svg{width:100%;height:100%;display:block}
.empty-state .es-title{font-size:16px;font-weight:600;color:var(--text);margin:0}
.empty-state .es-desc{font-size:13.5px;color:var(--text-2);max-width:360px;line-height:1.6;margin:0}
.empty-state .es-cta{margin-top:var(--s3)}
.empty-state .es-cta .btn{width:auto}

/* 全局减弱动效兜底:骨架/spinner 降级为静态(避免眩晕) */
@media(prefers-reduced-motion:reduce){
  .skeleton{animation:none}
  .btn.is-loading::after,button.is-loading::after{animation-duration:1.2s}
}

/* 首次进入后台的语言选择弹窗(纯链接,CSP 安全) */
.lang-firstrun{position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(0,0,0,.4);-webkit-backdrop-filter:saturate(180%) blur(6px);backdrop-filter:saturate(180%) blur(6px)}
.lfr-card{background:#fff;border-radius:16px;padding:32px 28px;max-width:400px;width:100%;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.lfr-globe{font-size:40px;line-height:1}
.lfr-h{font-size:20px;font-weight:600;margin:12px 0 6px;color:#1d1d1f}
.lfr-p{font-size:14px;color:#6e6e73;margin:0 0 20px;line-height:1.6}
.lfr-opts{display:flex;flex-direction:column;gap:10px}
.lfr-opt{display:flex;align-items:center;gap:12px;padding:14px 16px;min-height:44px;border:1px solid #d2d2d7;border-radius:12px;text-decoration:none;color:#1d1d1f;font-size:15px;font-weight:500;transition:background .15s,border-color .15s}
.lfr-opt:hover{background:#f5f8ff;border-color:#0071e3;text-decoration:none}
.lfr-opt:focus-visible{outline:3px solid rgba(0,113,227,.35);outline-offset:2px}
.lfr-opt img{border-radius:50%;flex:0 0 auto}
.lfr-note{font-size:12px;color:#8e8e93;margin:16px 0 0}
@media(prefers-color-scheme:dark){.lfr-card{background:#1c1c1e}.lfr-h{color:#f5f5f7}.lfr-p{color:#a1a1a6}.lfr-opt{border-color:#3a3a3c;color:#f5f5f7}.lfr-opt:hover{background:#2c2c2e}}
@media(prefers-reduced-motion:reduce){.lfr-opt{transition:none}}