/* ===== YukiClient 官网 · 浅色主题 ===== */
:root{
  --bg:#f4f7fc;
  --bg-2:#eef3fb;
  --card:#ffffff;
  --card-2:#fbfcfe;
  --line:#e4eaf4;
  --line-strong:#cfdaea;
  --text:#0d1526;
  --muted:#566b82;
  --dim:#8497b0;
  --primary:#2563eb;
  --primary-2:#3b82f6;
  --primary-soft:#eaf1ff;
  --cyan:#0891b2;
  --pink:#ec4899;
  --green:#0f9f6e;
  --warn:#c2780a;
  --red:#dc2626;
  --radius:16px;
  --max:1200px;
  --font:"Inter","Segoe UI",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono","Cascadia Code",Consolas,monospace;
  --shadow-sm:0 1px 2px rgba(13,21,38,.05),0 8px 20px -18px rgba(13,21,38,.35);
  --shadow-md:0 1px 2px rgba(13,21,38,.05),0 18px 40px -26px rgba(13,21,38,.45);
  --shadow-lg:0 30px 70px -40px rgba(13,21,38,.5);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:15.5px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 480px at 82% -12%,rgba(37,99,235,.12),transparent 62%),
    radial-gradient(760px 420px at 4% 2%,rgba(6,182,212,.09),transparent 60%),
    radial-gradient(720px 520px at 96% 46%,rgba(236,72,153,.06),transparent 66%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(13,21,38,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(13,21,38,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 76% 52% at 50% 0%,#000 10%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 76% 52% at 50% 0%,#000 10%,transparent 72%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:rgba(37,99,235,.18)}

/* ---------- 顶栏 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--line);
}
.nav-inner{max-width:var(--max);margin:0 auto;padding:13px 22px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand img{width:36px;height:36px;border-radius:10px;box-shadow:0 4px 12px -6px rgba(13,21,38,.35),0 0 0 1px var(--line)}
.brand b{font-size:16.5px;letter-spacing:.2px}
.brand span{font-size:10.5px;color:var(--dim);display:block;line-height:1;margin-top:4px;letter-spacing:1.4px}
.nav-links{display:flex;gap:2px;margin-left:auto;align-items:center}
.nav-links a{padding:8px 12px;border-radius:9px;font-size:14px;color:var(--muted);transition:.18s}
.nav-links a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-links a.on{color:var(--primary);background:var(--primary-soft);font-weight:600}
.nav-cta{margin-left:8px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:11px;font-size:14.5px;font-weight:650;
  border:1px solid transparent;cursor:pointer;transition:transform .16s,box-shadow .2s,background .2s,border-color .2s,color .2s;
  white-space:nowrap;font-family:inherit;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,#2f6bf6,#1d4ed8);color:#fff;
  box-shadow:0 10px 24px -14px rgba(37,99,235,.95),inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover{background:linear-gradient(135deg,#3b78ff,#2456e0);box-shadow:0 16px 30px -14px rgba(37,99,235,1)}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--text);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:#a9c0e6;background:#fff;color:var(--primary)}
.btn-danger{background:#fff;border-color:#f3c2c2;color:var(--red)}
.btn-danger:hover{background:#fef2f2;border-color:#e79c9c}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:9px}
.btn-block{width:100%}

/* 用户入口 */
.user-chip{
  display:flex;align-items:center;gap:8px;padding:6px 12px 6px 6px;border-radius:999px;
  border:1px solid var(--line-strong);background:#fff;font-size:13px;box-shadow:var(--shadow-sm);
  color:var(--text);transition:.18s;
}
.user-chip:hover{border-color:#a9c0e6;color:var(--primary)}
.user-chip span{white-space:nowrap;max-width:130px;overflow:hidden;text-overflow:ellipsis}
.user-chip .ava{
  width:26px;height:26px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(135deg,#2f6bf6,#22d3ee);color:#fff;font-size:12px;font-weight:700;
}
.user-chip .ava.hide{display:none}

/* ---------- 通用 ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.section{padding:84px 0}
.section.tight{padding:56px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:2.2px;color:var(--primary);text-transform:uppercase;margin:0 0 14px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),var(--primary));border-radius:2px}
h2{font-size:clamp(26px,3.4vw,38px);line-height:1.25;margin:0 0 12px;letter-spacing:-.7px;font-weight:800}
.lead{color:var(--muted);font-size:16px;max-width:660px;margin:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px;flex-wrap:wrap}

/* ---------- Hero ---------- */
.hero{padding:70px 0 34px;position:relative}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1.16fr);gap:54px;align-items:center}
.hero-grid>*{min-width:0}
.pill{display:inline-flex;align-items:center;gap:9px;padding:6px 14px 6px 7px;border-radius:999px;
  background:#fff;border:1px solid #d9e4f7;box-shadow:var(--shadow-sm);font-size:12.5px;color:var(--muted);margin-bottom:22px}
.pill em{font-style:normal;background:linear-gradient(135deg,#2f6bf6,#22d3ee);color:#fff;
  font-weight:800;font-size:10.5px;padding:3px 9px;border-radius:999px;letter-spacing:.4px}
.hero h1{font-size:clamp(34px,4.9vw,58px);line-height:1.1;margin:0 0 20px;font-weight:850;letter-spacing:-1.8px}
.hero h1 .grad{
  background:linear-gradient(105deg,#2563eb 4%,#0891b2 44%,#db2777 96%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.sub{font-size:16.5px;color:var(--muted);margin:0 0 30px;max-width:520px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-meta{display:flex;gap:18px;margin-top:26px;flex-wrap:wrap;font-size:12.5px;color:var(--dim)}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(15,159,110,.15)}

/* 应用窗口图 */
.hero-visual{position:relative}
.hero-visual::before{
  content:"";position:absolute;inset:6% -4% -8% -4%;z-index:0;
  background:radial-gradient(closest-side,rgba(37,99,235,.18),transparent 72%);filter:blur(26px);
}
.app-mock{
  position:relative;z-index:1;border-radius:14px;overflow:hidden;background:#fff;
  border:1px solid #dfe7f3;box-shadow:var(--shadow-lg);
}
.app-bar{display:flex;align-items:center;gap:8px;padding:9px 13px;background:linear-gradient(180deg,#f8fafd,#eef2f9);
  border-bottom:1px solid var(--line)}
.app-bar i{width:10px;height:10px;border-radius:50%;display:block}
.app-bar i:nth-child(1){background:#ff5f57}.app-bar i:nth-child(2){background:#febc2e}.app-bar i:nth-child(3){background:#28c840}
.app-bar b{margin-left:8px;font-size:11.5px;color:var(--dim);font-weight:500;letter-spacing:.3px}
.app-mock img{width:100%;height:auto;max-width:100%}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;box-shadow:var(--shadow-md);overflow:hidden}
.stat{padding:24px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:27px;font-weight:800;letter-spacing:-.8px;
  background:linear-gradient(135deg,#0d1526,#2f6bf6);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12.5px;color:var(--dim)}

/* ---------- 功能 ---------- */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.tab{padding:9px 16px;border-radius:10px;font-size:13.5px;color:var(--muted);cursor:pointer;
  background:#fff;border:1px solid var(--line);transition:.18s;font-family:inherit;font-weight:550;box-shadow:var(--shadow-sm)}
.tab:hover{color:var(--primary);border-color:#bcd0ee}
.tab.active{color:#fff;background:linear-gradient(135deg,#2f6bf6,#1d4ed8);border-color:transparent;
  box-shadow:0 10px 22px -14px rgba(37,99,235,.9)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(292px,1fr));gap:16px}
.card{position:relative;padding:24px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:transform .2s,border-color .2s,box-shadow .25s;overflow:hidden}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .25s;
  background:radial-gradient(420px 180px at 10% 0%,rgba(37,99,235,.07),transparent 70%)}
.card:hover{transform:translateY(-3px);border-color:#c3d6f2;box-shadow:var(--shadow-md)}
.card:hover::after{opacity:1}
.card-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;margin-bottom:15px;
  background:linear-gradient(135deg,#eaf1ff,#e6f7fb);border:1px solid #d7e5fb;color:#2563eb}
.card-icon svg{width:21px;height:21px}
.card h3{font-size:16.5px;margin:0 0 8px;font-weight:700;letter-spacing:-.2px}
.card p{margin:0;color:var(--muted);font-size:13.8px;line-height:1.65}
.card ul{margin:12px 0 0;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:6px}
.card li{font-size:12.8px;color:var(--dim);padding-left:16px;position:relative}
.card li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:2px;
  background:linear-gradient(135deg,var(--cyan),var(--primary));opacity:.9}
.card code{font-family:var(--mono);font-size:12px;background:#f1f5fb;border:1px solid var(--line);
  padding:1px 5px;border-radius:5px;color:#1e40af}
.tag{display:inline-block;font-size:10.5px;padding:2px 8px;border-radius:6px;margin-left:8px;vertical-align:2px;font-weight:700;
  background:#e7f8f1;color:#0b7a55;border:1px solid #bfe9d8}
.tag.pink{background:#fdeef6;color:#be185d;border-color:#f8cfe4}

/* ---------- 截图 ---------- */
.shots{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.shot{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;
  cursor:zoom-in;position:relative;transition:border-color .2s,transform .2s,box-shadow .2s;box-shadow:var(--shadow-sm)}
.shot:hover{border-color:#c3d6f2;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.shot img{width:100%;background:#f8fafd}
.shot figcaption{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 16px;font-size:13px;color:var(--muted);border-top:1px solid var(--line)}
.shot figcaption b{color:var(--text);font-weight:650;font-size:13.5px}
.shot figcaption span{font-size:11.5px;color:var(--dim)}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(9,15,28,.78);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;padding:4vh 4vw;cursor:zoom-out}
.lightbox.on{display:flex}
.lightbox img{max-width:100%;max-height:92vh;border-radius:10px;box-shadow:0 40px 90px -20px rgba(0,0,0,.6)}

/* ---------- 下载 ---------- */
.dl-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:18px}
.dl-grid>*{min-width:0}
.dl-main{border:1px solid #d5e3fb;border-radius:18px;padding:30px;position:relative;overflow:hidden;
  background:radial-gradient(520px 240px at 100% 0%,#e8f1ff,transparent 68%),linear-gradient(180deg,#ffffff,#f7faff);
  box-shadow:var(--shadow-md)}
.dl-main h3{margin:0;font-size:20px}
.dl-main .ver{font-size:12.5px;color:var(--primary);font-weight:700;letter-spacing:1.2px}
.dl-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
.dl-meta div{background:#f7faff;border:1px solid var(--line);border-radius:10px;padding:11px 13px}
.dl-meta span{display:block;font-size:11px;color:var(--dim);letter-spacing:.6px}
.dl-meta b{font-size:13.5px;font-weight:650;word-break:break-all}
.sha{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11.5px;color:var(--muted);
  background:#f7faff;border:1px dashed var(--line-strong);border-radius:9px;padding:9px 12px;margin-bottom:22px;overflow:hidden}
.sha code{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;color:#1e40af}
.sha button{background:none;border:none;color:var(--dim);cursor:pointer;font-size:11px;font-family:inherit;flex-shrink:0}
.sha button:hover{color:var(--primary)}
.latest-notes{margin:22px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:7px}
.latest-notes li{font-size:13px;color:var(--muted);padding-left:16px;position:relative}
.latest-notes li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:2px;
  background:linear-gradient(135deg,var(--cyan),var(--primary))}
.fallback{color:var(--dim);font-size:13.5px;margin:0}
.dl-side{display:flex;flex-direction:column;gap:14px}
.dl-side .mini{border:1px solid var(--line);border-radius:14px;padding:19px 20px;background:#fff;box-shadow:var(--shadow-sm)}
.dl-side h4{margin:0 0 10px;font-size:14px;display:flex;align-items:center;gap:8px}
.dl-side p{margin:0;font-size:13px;color:var(--muted)}
.dl-side ol{margin:0;padding-left:18px;font-size:13px;color:var(--muted);line-height:1.9}
.req{display:flex;flex-direction:column;gap:7px;font-size:13px;color:var(--muted)}
.req div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed var(--line);padding-bottom:6px}
.req div:last-child{border:none}
.req em{font-style:normal;color:var(--text)}

.table-wrap{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line)}
th{font-size:11.5px;letter-spacing:1.2px;color:var(--dim);text-transform:uppercase;font-weight:700;background:#f8fafd}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#f8fbff}
td .v{font-family:var(--mono);color:#1e40af}
td .lk{color:var(--primary);font-weight:650}
td .lk:hover{text-decoration:underline}
.badge{font-size:11px;padding:2px 9px;border-radius:999px;background:#e7f8f1;color:#0b7a55;border:1px solid #bfe9d8;font-weight:650}

/* ---------- 公告 / 更新 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:34px}
.split>*{min-width:0}
.news-list{display:flex;flex-direction:column;gap:10px}
.news{display:flex;gap:14px;padding:15px 17px;border-radius:12px;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow-sm);transition:.2s}
.news:hover{border-color:#c3d6f2;box-shadow:var(--shadow-md)}
.news .date{font-family:var(--mono);font-size:11.5px;color:var(--dim);flex-shrink:0;padding-top:2px;width:74px}
.news b{display:block;font-size:14px;margin-bottom:3px;font-weight:650}
.news p{margin:0;font-size:12.8px;color:var(--muted);line-height:1.6}
.news .n-tag{font-size:10.5px;padding:1px 7px;border-radius:5px;margin-right:7px;
  background:var(--primary-soft);color:#1e40af;border:1px solid #d5e3fb}

.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,#93b4ec,rgba(13,21,38,.06))}
.tl-item{position:relative;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-24px;top:6px;width:9px;height:9px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.tl-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.tl-head b{font-size:15px}
.tl-head time{font-family:var(--mono);font-size:11.5px;color:var(--dim)}
.tl-item ul{margin:0;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:5px}
.tl-item li{font-size:13px;color:var(--muted);padding-left:15px;position:relative}
.tl-item li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:#c3d0e2}
.cl-group{margin:14px 0 0}
.cl-group em{display:inline-block;font-style:normal;font-size:11px;letter-spacing:1px;color:#1e40af;
  background:var(--primary-soft);border:1px solid #d5e3fb;padding:1px 9px;border-radius:6px;margin-bottom:8px}
.cl-group ul{margin:0;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:5px}
.cl-group li{font-size:13px;color:var(--muted);padding-left:15px;position:relative;line-height:1.65}
.cl-group li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:#c3d0e2}

/* ---------- 教程 ---------- */
.guides{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.guide{padding:24px;border-radius:var(--radius);border:1px solid var(--line);position:relative;overflow:hidden;
  background:#fff;box-shadow:var(--shadow-sm);transition:.22s}
.guide:hover{border-color:#c3d6f2;transform:translateY(-3px);box-shadow:var(--shadow-md)}
.guide .num{font-size:12px;font-family:var(--mono);color:var(--primary);letter-spacing:2px;font-weight:700}
.guide h3{font-size:16px;margin:9px 0 7px}
.guide p{margin:0;font-size:13px;color:var(--muted)}
.guide .go{margin-top:14px;font-size:12.5px;color:var(--primary);display:inline-flex;gap:6px;align-items:center;font-weight:600}

/* ---------- CTA ---------- */
.cta{border-radius:20px;padding:52px 44px;text-align:center;position:relative;overflow:hidden;
  border:1px solid #d5e3fb;background:radial-gradient(620px 300px at 50% -20%,#e3eeff,transparent 70%),#fff;
  box-shadow:var(--shadow-md)}
.cta h2{margin-bottom:10px}
.cta p{color:var(--muted);max-width:520px;margin:0 auto 26px}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);margin-top:40px;padding:44px 0 34px;background:#eef3fb}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.foot-brand p{font-size:12.8px;color:var(--dim);margin:12px 0 0;max-width:300px;line-height:1.7}
.foot-col h5{font-size:12px;letter-spacing:1.4px;color:var(--muted);margin:0 0 12px;text-transform:uppercase}
.foot-col a{display:block;font-size:13px;color:var(--dim);padding:4px 0;transition:color .15s}
.foot-col a:hover{color:var(--primary)}
.foot-bottom{max-width:var(--max);margin:34px auto 0;padding:18px 22px 0;border-top:1px solid var(--line-strong);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--dim)}
.disclaimer{font-size:11.5px;color:#95a6bc;line-height:1.75;max-width:var(--max);margin:14px auto 0;padding:0 22px}

/* ---------- 内页 ---------- */
.page-head{padding:60px 0 30px}
.page-head h1{font-size:clamp(30px,4vw,44px);margin:0 0 12px;letter-spacing:-1.2px;font-weight:820}
.crumb{font-size:12.5px;color:var(--dim);margin-bottom:16px}
.crumb a:hover{color:var(--primary)}
.guide-layout{display:grid;grid-template-columns:206px minmax(0,1fr);gap:44px;align-items:start}
.guide-layout>*{min-width:0}
.toc{position:sticky;top:86px}
.toc a{font-size:13px}
.prose{max-width:820px;min-width:0}
.prose pre{max-width:100%}
.prose h2{font-size:23px;margin:44px 0 14px;letter-spacing:-.4px}
.prose h3{font-size:17px;margin:28px 0 10px}
.prose p{color:var(--muted);font-size:14.5px;margin:0 0 14px}
.prose ul,.prose ol{color:var(--muted);font-size:14.5px;padding-left:22px;line-height:1.9}
.prose li{margin-bottom:4px}
.prose code{font-family:var(--mono);font-size:12.5px;background:#f1f5fb;border:1px solid var(--line);
  padding:2px 6px;border-radius:5px;color:#1e40af}
.prose pre{background:#0f1729;border:1px solid #1e293b;border-radius:12px;padding:16px 18px;
  overflow:auto;font-size:12.5px;line-height:1.75}
.prose pre code{background:none;border:none;padding:0;color:#d7e3f7}
.callout{border-left:3px solid var(--primary);background:#f2f7ff;border-radius:0 10px 10px 0;
  padding:14px 18px;margin:18px 0;font-size:13.8px;color:var(--muted)}
.callout.warn{border-color:#e0a02a;background:#fdf8ec}
.callout.danger{border-color:#e05353;background:#fdf1f1}
.callout b{color:var(--text)}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{position:relative;padding:0 0 22px 46px;counter-increment:s}
.steps li::before{content:counter(s);position:absolute;left:0;top:-2px;width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;font-size:13px;font-weight:700;color:#1e40af;
  background:#eaf1ff;border:1px solid #d5e3fb}
.steps b{display:block;color:var(--text);font-size:14.5px;margin-bottom:4px}
.steps p{margin:0;font-size:13.5px;color:var(--muted)}
.faq{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border:none}
.faq summary{padding:16px 20px;cursor:pointer;font-size:14.5px;font-weight:650;list-style:none;
  display:flex;justify-content:space-between;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--primary);font-weight:400;font-size:18px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq .ans{padding:0 20px 18px;font-size:13.8px;color:var(--muted);line-height:1.8}

/* ---------- 登录 / 账号 / 后台 ---------- */
.auth-shell{min-height:calc(100vh - 64px);display:grid;place-items:center;padding:48px 22px}
.auth-card{
  width:100%;max-width:420px;background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:34px;box-shadow:var(--shadow-lg);
}
.auth-card.wide{max-width:480px}
.auth-title{font-size:22px;font-weight:800;letter-spacing:-.5px;margin:0 0 6px}
.auth-sub{color:var(--muted);font-size:13.5px;margin:0 0 22px}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#f1f5fb;border:1px solid var(--line);
  border-radius:11px;padding:4px;margin-bottom:22px}
.auth-tabs button{
  border:none;background:none;padding:9px 12px;border-radius:8px;font-size:13.5px;font-weight:650;
  color:var(--muted);cursor:pointer;font-family:inherit;transition:.18s;
}
.auth-tabs button.active{background:#fff;color:var(--primary);box-shadow:var(--shadow-sm)}
.field{margin-bottom:16px}
.field label{display:block;font-size:12.5px;font-weight:650;color:var(--muted);margin-bottom:7px;letter-spacing:.3px}
.input{
  width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--line-strong);background:#fbfcfe;
  font-size:14px;font-family:inherit;color:var(--text);transition:.18s;
}
.input:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.alert{border-radius:10px;padding:11px 14px;font-size:13px;margin-bottom:16px;display:none}
.alert.show{display:block}
.alert.err{background:#fdf1f1;border:1px solid #f3c9c9;color:#a32020}
.alert.ok{background:#eefaf4;border:1px solid #c3ead9;color:#0b6b4b}
.hint{font-size:12px;color:var(--dim);margin-top:14px;text-align:center;line-height:1.6}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

.dash{max-width:1080px;margin:0 auto;padding:44px 22px 70px}
.dash-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:26px}
.dash-head h1{font-size:26px;margin:0;letter-spacing:-.6px}
.dash-head p{margin:4px 0 0;color:var(--muted);font-size:13.5px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:26px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-sm)}
.stat-card span{display:block;font-size:12px;color:var(--dim);letter-spacing:.4px}
.stat-card b{font-size:24px;font-weight:800;letter-spacing:-.6px}
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm);overflow:hidden;margin-bottom:20px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.panel-head h2{font-size:15.5px;margin:0;letter-spacing:-.2px}
.panel-body{padding:20px}
.tbl input[type=text],.tbl input[type=password]{width:100%;min-width:90px}
.row-actions{display:flex;gap:6px;flex-wrap:wrap}
.mini-btn{border:1px solid var(--line-strong);background:#fff;border-radius:7px;padding:4px 9px;font-size:12px;
  cursor:pointer;font-family:inherit;color:var(--muted);transition:.15s}
.mini-btn:hover{border-color:#a9c0e6;color:var(--primary)}
.mini-btn.danger:hover{border-color:#e79c9c;color:var(--red);background:#fef2f2}
.role{font-size:11px;padding:2px 8px;border-radius:999px;font-weight:700}
.role.admin{background:#eef0ff;color:#4338ca;border:1px solid #d6d9fb}
.role.user{background:#f1f5fb;color:#475569;border:1px solid var(--line-strong)}
.pill-online{font-size:11px;padding:1px 8px;border-radius:999px;font-weight:700;
  background:#e7f8f1;color:#0b7a55;border:1px solid #bfe9d8}
.pill-offline{font-size:11px;padding:1px 8px;border-radius:999px;font-weight:700;
  background:#f1f5fb;color:#7b8aa1;border:1px solid var(--line-strong)}
.pill-banned{font-size:11px;padding:1px 8px;border-radius:999px;font-weight:700;
  background:#fdf1f1;color:#a32020;border:1px solid #f3c9c9}
.pane{display:none}
.pane.on{display:block}
.ban-form{display:grid;grid-template-columns:1.2fr .8fr 1.4fr auto;gap:10px;align-items:end;margin-bottom:16px}
.ua-cell{font-size:11.5px;color:var(--dim);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tbl-mini td,.tbl-mini th{padding:10px 14px;font-size:13px}
.state-on{color:var(--green);font-weight:650;font-size:12.5px}
.state-off{color:var(--dim);font-weight:650;font-size:12.5px}
.empty{text-align:center;color:var(--dim);font-size:13.5px;padding:26px 0}

/* ---------- 个人中心 ---------- */
.profile-card{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-md);margin-bottom:20px;background:#fff}
.profile-bg{position:absolute;inset:0;background:
  linear-gradient(135deg,#dbeafe,#eff6ff 40%,#fdf2f8);background-size:cover;background-position:center}
.profile-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.05) 0%,rgba(255,255,255,.86) 58%,#fff 100%)}
.profile-bg.has-image::after{background:linear-gradient(180deg,rgba(9,15,28,0) 8%,rgba(255,255,255,.5) 62%,#fff 100%)}
.profile-main{position:relative;display:block;padding:150px 28px 26px}
.profile-info{min-width:0}
.profile-info h2{margin:0 0 6px;font-size:26px;letter-spacing:-.7px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.profile-info .sign{margin:0 0 10px;color:var(--muted);font-size:14.5px;min-height:22px;word-break:break-word}
.profile-info .meta{font-size:12.5px;color:var(--dim);display:flex;gap:8px;flex-wrap:wrap}
.profile-info .meta span{background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:999px;
  padding:3px 11px;backdrop-filter:blur(4px)}
.profile-actions{display:flex;gap:8px;flex-wrap:wrap}

.grid-2{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.grid-2>*{min-width:0}

.bg-preview{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;background:linear-gradient(135deg,#dbeafe,#eff6ff 45%,#fdf2f8);
  background-size:cover;background-position:center;display:grid;place-items:center;color:var(--dim);font-size:12.5px}
.bg-preview span{background:rgba(255,255,255,.82);padding:5px 12px;border-radius:999px;backdrop-filter:blur(4px)}

.dev-name{display:flex;align-items:center;gap:9px;font-weight:600}
.dev-ico{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;flex-shrink:0;
  background:var(--primary-soft);border:1px solid #d5e3fb;color:var(--primary)}
.pill-current{font-size:10.5px;padding:1px 7px;border-radius:999px;margin-left:6px;font-weight:700;
  background:#e7f8f1;color:#0b7a55;border:1px solid #bfe9d8}
.pill-expired{font-size:10.5px;padding:1px 7px;border-radius:999px;margin-left:6px;font-weight:700;
  background:#fdf1f1;color:#a32020;border:1px solid #f3c9c9}
.ip-tag{font-family:var(--mono);font-size:12px;color:var(--muted)}

.kv{display:grid;grid-template-columns:auto 1fr;gap:9px 16px;font-size:13px;color:var(--muted);
  margin-top:20px;padding-top:16px;border-top:1px dashed var(--line)}
.kv em{font-style:normal;color:var(--dim);font-size:12.5px}
.kv b{color:var(--text);font-weight:600;font-size:13px}

/* 签名颜色 / 字体 / 预览 */
.sig-colors{display:flex;gap:9px;flex-wrap:wrap;align-items:center}
.sig-color{width:27px;height:27px;border-radius:9px;border:2px solid #fff;cursor:pointer;
  box-shadow:0 0 0 1px var(--line-strong);transition:.15s}
.sig-color:hover{transform:translateY(-2px)}
.sig-color.active{box-shadow:0 0 0 2px var(--primary);transform:translateY(-1px)}
.sig-color.clear{display:grid;place-items:center;background:#fff;color:var(--dim);font-size:11px;font-weight:600}
.sig-preview{min-height:58px;border:1px dashed var(--line-strong);border-radius:10px;display:flex;
  align-items:center;padding:10px 16px;background:#fbfcfe;font-size:17px;overflow:hidden;word-break:break-word}
.sig-preview.empty{color:var(--dim);font-size:13px}
select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238497b0' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 13px center;padding-right:36px}

/* 账号信息卡片 */
.acct-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.ai{background:#f8fafd;border:1px solid var(--line);border-radius:11px;padding:10px 13px;min-width:0}
.ai span{display:block;font-size:11px;color:var(--dim);letter-spacing:.3px}
.ai b{display:block;font-size:13.5px;color:var(--text);font-weight:650;margin-top:2px;word-break:break-all}

/* ---------- 登录背景：客户端预览框 ---------- */
.bg-editor{display:grid;grid-template-columns:minmax(0,560px) minmax(0,1fr);gap:26px;align-items:start}
.bg-editor>*{min-width:0}
.bg-frame{border-radius:14px;overflow:hidden;border:1px solid var(--line-strong);background:#eef2f9;
  box-shadow:0 20px 44px -30px rgba(13,21,38,.55)}
.bg-frame-bar{display:flex;align-items:center;gap:7px;padding:9px 12px;background:#131c2e;border-bottom:1px solid rgba(255,255,255,.07)}
.bg-frame-bar i{width:9px;height:9px;border-radius:50%;display:block;background:#3f4d63}
.bg-frame-bar i:nth-child(1){background:#ff5f57}.bg-frame-bar i:nth-child(2){background:#febc2e}.bg-frame-bar i:nth-child(3){background:#28c840}
.bg-frame-bar b{margin-left:6px;font-size:11.5px;color:#93a4bd;font-weight:500;letter-spacing:.3px}
.bg-frame-body{position:relative;aspect-ratio:16/10;background:linear-gradient(135deg,#dbeafe,#eff6ff 45%,#fdf2f8);
  background-size:cover;background-position:center;transition:background-image .2s;border-radius:0}
.bg-frame-card{position:relative;width:62%;max-width:280px;background:rgba(255,255,255,.94);border-radius:14px;
  padding:18px 18px 16px;box-shadow:0 18px 40px -18px rgba(9,15,28,.55);backdrop-filter:blur(6px);text-align:center}
.bg-frame-logo{width:38px;height:38px;margin:0 auto 8px;border-radius:11px;overflow:hidden;box-shadow:0 6px 14px -8px rgba(13,21,38,.5)}
.bg-frame-logo img{width:100%;height:100%;object-fit:cover}
.bg-frame-title{font-size:13.5px;font-weight:800;letter-spacing:-.2px;color:#0d1526}
.bg-frame-sign{font-size:10.5px;color:#7b8aa1;margin:2px 0 12px;min-height:14px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.bg-frame-field{height:24px;border-radius:7px;background:#f1f5fb;border:1px solid #e2e9f4;margin-bottom:7px;
  display:flex;align-items:center;padding:0 9px;font-size:10px;color:#9aa9bd}
.bg-frame-btn{height:26px;border-radius:7px;background:linear-gradient(135deg,#2f6bf6,#1d4ed8);color:#fff;
  font-size:10.5px;font-weight:700;display:grid;place-items:center;margin-top:10px}
.bg-frame-badge{position:absolute;left:12px;top:12px;font-size:10.5px;padding:3px 9px;border-radius:999px;
  background:rgba(255,255,255,.88);color:#0b6b4b;font-weight:700;backdrop-filter:blur(4px);z-index:2}
.bg-frame-badge.pending{background:rgba(255,244,214,.95);color:#8a5a00}
.bg-frame-hint{position:absolute;right:12px;bottom:10px;font-size:10.5px;color:rgba(255,255,255,.9);
  text-shadow:0 1px 3px rgba(0,0,0,.4)}
.bg-frame.drag{outline:2px dashed var(--primary);outline-offset:4px}

.bg-side h4{margin:0 0 6px;font-size:13.5px}
.bg-side p{margin:0 0 14px;font-size:12.5px;color:var(--muted);line-height:1.7}
.bg-side .meta-line{font-size:12px;color:var(--dim);margin:0 0 14px;font-family:var(--mono)}
.bg-swatches{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 16px}
.bg-swatch{width:34px;height:34px;border-radius:10px;border:2px solid #fff;box-shadow:0 0 0 1px var(--line-strong);
  cursor:pointer;transition:.16s}
.bg-swatch:hover{transform:translateY(-2px);box-shadow:0 0 0 1px var(--primary)}

/* ---------- 登录页个人背景 ---------- */
.login-bg{position:fixed;inset:0;z-index:-1;background-size:cover;background-position:center;
  filter:blur(7px) saturate(120%);transform:scale(1.05);opacity:0;transition:opacity .5s}
.login-bg.on{opacity:1}
.login-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(244,247,252,.42),rgba(244,247,252,.72))}
body.has-login-bg{background:#f4f7fc}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(16px);
  transition:opacity .55s cubic-bezier(.2,.7,.3,1),transform .55s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1 !important;transform:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media(max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:640px}
  .dl-grid,.split{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .guides{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .stat-row{grid-template-columns:1fr 1fr}
}
@media(max-width:920px){
  .guide-layout{grid-template-columns:1fr;gap:16px}
  .toc{position:static;border:1px solid var(--line);border-radius:12px;padding:14px 18px;background:#fff;box-shadow:var(--shadow-sm)}
  .toc .foot-col h5{margin-bottom:8px}
  .toc .foot-col a{padding:3px 0}
  .grid-2{grid-template-columns:1fr}
  .bg-editor{grid-template-columns:1fr;gap:18px}
  .profile-main{padding:104px 18px 20px;gap:14px}
  .profile-info h2{font-size:20px}
  .profile-actions{width:100%;justify-content:flex-start}
  .panel-head{flex-wrap:wrap;gap:6px}
  .panel-head h2{white-space:nowrap}
}
@media(max-width:720px){
  .section{padding:58px 0}
  .shots{grid-template-columns:1fr}
  .dl-meta{grid-template-columns:1fr}
  .hero{padding:42px 0 22px}
  .cta{padding:38px 22px}
  .stat{padding:18px}
  .stat b{font-size:22px}
  .foot-grid{grid-template-columns:1fr}
  .news .date{width:64px}
  .auth-card{padding:26px 20px}
  .field-row{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr 1fr}
  .dash{padding:28px 16px 60px}
}
@media(max-width:560px){
  .bg-frame-card{width:74%;max-width:220px;padding:12px 12px 10px;border-radius:11px}
  .bg-frame-logo{width:28px;height:28px;margin-bottom:5px;border-radius:8px}
  .bg-frame-title{font-size:11.5px}
  .bg-frame-sign{font-size:9px;margin:2px 0 8px}
  .bg-frame-field{height:19px;margin-bottom:5px;font-size:9px;border-radius:6px}
  .bg-frame-btn{height:21px;font-size:9.5px;margin-top:7px;border-radius:6px}
  .bg-frame-hint{display:none}
  .bg-frame-badge{font-size:9.5px;padding:2px 7px;left:8px;top:8px}
}