:root{
  --bg:#08060f; --bg2:#0d0a18; --panel:#141026; --panel2:#1a1430;
  --line:rgba(167,139,250,.16); --line2:rgba(167,139,250,.30);
  --txt:#eae6f5; --dim:#a79fc4; --mute:#7a719a;
  --pink:#ff3ea5; --cyan:#22d3ee; --violet:#a855f7; --amber:#fbbf24; --green:#4ade80; --red:#fb7185;
  --grad:linear-gradient(135deg,#ff3ea5,#a855f7 52%,#22d3ee);
  --grad2:linear-gradient(135deg,#22d3ee,#a855f7 60%,#ff3ea5);
  --r:16px; --r-s:10px;
  --header-h:64px;
  --sp-section:84px; --sp-section-sm:56px; --sp-head:22px; --gutter:24px; --side:250px; --gap-doc:44px;
  --wrap:1240px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 20px)}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font:16px/1.78 "PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  overflow-x:hidden;letter-spacing:.2px;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(720px 460px at 12% -6%, rgba(255,62,165,.20), transparent 62%),
    radial-gradient(660px 420px at 88% 4%, rgba(34,211,238,.16), transparent 62%),
    radial-gradient(900px 560px at 50% 108%, rgba(168,85,247,.16), transparent 66%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(167,139,250,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(167,139,250,.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(1200px 720px at 50% 0%, #000 0%, transparent 78%);
          mask-image:radial-gradient(1200px 720px at 50% 0%, #000 0%, transparent 78%);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--pink)}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:.4px}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:22px}
li{margin:5px 0}
code,kbd{font-family:"Cascadia Mono",Consolas,"Courier New",monospace}

/* ---------- 布局 ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
main{display:block}
section{padding:var(--sp-section) 0}
section.sm{padding:var(--sp-section-sm) 0}
.band{background:linear-gradient(180deg,rgba(20,16,38,.86),rgba(13,10,24,.86));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:relative}
.band::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,62,165,.5),rgba(34,211,238,.5),transparent)}
.wrap > .band{margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);
  padding-left:calc(50vw - 50%);padding-right:calc(50vw - 50%)}
.grid{display:grid;gap:var(--gutter)}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-asym{grid-template-columns:1.32fr 1fr}
.g-side{grid-template-columns:.82fr 1.18fr}

/* ---------- 进度条 ---------- */
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:90;background:var(--grad);transition:width .12s linear}

/* ---------- header ---------- */
.header{position:sticky;top:0;z-index:60;background:rgba(8,6,15,.82);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:18px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{height:28px;width:auto}
.brand .tag{font-size:11px;color:var(--pink);border:1px solid rgba(255,62,165,.45);
  border-radius:999px;padding:2px 8px;letter-spacing:1px;white-space:nowrap}
.nav{display:flex;gap:6px;margin-left:auto;flex-wrap:nowrap}
.nav a{color:var(--dim);font-size:14.5px;padding:8px 11px;border-radius:9px;white-space:nowrap;transition:.18s}
.nav a:hover{color:#fff;background:rgba(167,139,250,.12)}
.nav a.active{color:#fff;background:rgba(255,62,165,.16);box-shadow:inset 0 0 0 1px rgba(255,62,165,.32)}
.burger{display:none;margin-left:auto;width:42px;height:38px;border:1px solid var(--line);
  background:var(--panel);border-radius:10px;color:var(--txt);font-size:18px;cursor:pointer}
.mnav{display:none;position:fixed;inset:var(--header-h) 0 0;background:rgba(8,6,15,.98);
  z-index:59;padding:18px 22px 40px;overflow-y:auto}
.mnav a{display:block;padding:14px 4px;border-bottom:1px solid var(--line);color:var(--txt);font-size:16px}
.mnav.open{display:block}

/* ---------- 面包屑 ---------- */
.crumbs{padding-top:22px;font-size:13px;color:var(--mute)}
.crumbs a{color:var(--dim)}
.crumbs span{margin:0 7px;opacity:.55}
.crumbs b{color:var(--dim);font-weight:500}

/* ---------- 标题区 ---------- */
.section-head{text-align:center;max-width:760px;margin:0 auto var(--sp-head)}
.section-head h2{font-size:clamp(1.42rem,2.5vw,2rem);margin-bottom:12px}
.section-head p{color:var(--dim);font-size:15px;margin:0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-bottom:14px;margin-bottom:var(--sp-head);border-bottom:1px solid var(--line);position:relative}
.sec-head::after{content:"";position:absolute;left:0;bottom:-1px;width:96px;height:2px;background:var(--grad)}
.sec-head h2{font-size:clamp(1.3rem,2.2vw,1.72rem)}
.sec-head p{color:var(--mute);font-size:14px;margin:0;text-align:right;max-width:420px}
.rail-head{position:relative;padding-left:16px;margin-bottom:18px}
.rail-head::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--pink),var(--cyan))}
.rail-head h2{font-size:clamp(1.18rem,2vw,1.5rem)}

/* ---------- hero ---------- */
.hero{padding:70px 0 60px;position:relative}
.hero .pill{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--cyan);
  border:1px solid rgba(34,211,238,.35);background:rgba(34,211,238,.08);
  border-radius:999px;padding:5px 14px;margin-bottom:20px;letter-spacing:.6px}
.hero h1{font-size:clamp(2rem,4.6vw,3.25rem);line-height:1.22;font-weight:800;margin-bottom:18px}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{color:var(--dim);font-size:17px;max-width:720px}
.hero-act{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero-stat{display:flex;gap:26px;flex-wrap:wrap;margin-top:26px;font-size:13px;color:var(--mute)}
.hero-stat b{display:block;font-size:20px;color:var(--txt);font-weight:700;letter-spacing:.5px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:11px;border:1px solid var(--line2);
  background:var(--panel2);color:var(--txt);font-size:15px;cursor:pointer;
  transition:.18s;font-family:inherit;text-decoration:none}
.btn:hover{transform:translateY(-2px);border-color:var(--pink);color:#fff}
.btn-primary{background:var(--grad);border:0;color:#fff;font-weight:600;
  box-shadow:0 10px 30px -12px rgba(255,62,165,.75)}
.btn-primary:hover{color:#fff;box-shadow:0 14px 34px -12px rgba(255,62,165,.9)}
.btn-lg{padding:15px 30px;font-size:16.5px;border-radius:13px}
.btn-ghost{background:transparent}

/* ---------- 卡片 ---------- */
.card{background:linear-gradient(180deg,rgba(26,20,48,.72),rgba(20,16,38,.72));
  border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.2s}
.card:hover{transform:translateY(-4px);border-color:rgba(255,62,165,.42);
  box-shadow:0 16px 42px -22px rgba(255,62,165,.6)}
.card h3{font-size:1.08rem;margin-bottom:10px}
.card p{color:var(--dim);font-size:14.5px;margin:0}
.card--plain{background:rgba(20,16,38,.5);padding:20px}
.card--accent{position:relative;overflow:hidden}
.card--accent::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad)}
.card--row{display:grid;grid-template-columns:42px minmax(0,1fr);gap:4px 16px;align-items:start}
.card--row .ico{grid-row:1 / span 2;width:42px;height:42px;border-radius:12px;display:flex;
  align-items:center;justify-content:center;font-size:19px;background:rgba(255,62,165,.12);
  border:1px solid rgba(255,62,165,.3)}
.card--row h3{margin:0 0 4px}
.card ul{margin:0;padding-left:18px}
.card li{font-size:14.5px;color:var(--dim);margin:4px 0}

/* ---------- 速答区 ---------- */
.seo-quick{background:rgba(34,211,238,.06);border:1px solid rgba(34,211,238,.22);
  border-left:3px solid var(--cyan);border-radius:12px;padding:20px 24px;margin:26px 0 0}
.seo-quick h2{font-size:1.05rem;margin-bottom:10px;color:var(--cyan)}
.seo-quick p{color:var(--dim);font-size:15px;margin:0 0 8px}
.seo-quick p:last-child{margin:0}

/* ---------- 步骤 / 泳道 ---------- */
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:16px}
.steps li{counter-increment:s;position:relative;padding:18px 20px 18px 62px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-s)}
.steps li::before{content:counter(s);position:absolute;left:16px;top:16px;width:30px;height:30px;
  border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
  background:var(--grad);color:#fff}
.steps li b{display:block;margin-bottom:4px;font-size:15.5px}
.steps li span{color:var(--dim);font-size:14.5px}
.lane{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin:0;padding:0;list-style:none}
.lane-item{position:relative;padding:20px 18px 0 0}
.lane-item::before{content:attr(data-n);width:34px;height:34px;border-radius:50%;display:flex;
  align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff;
  background:var(--grad2);margin-bottom:12px}
.lane-item::after{content:"";position:absolute;top:17px;left:38px;right:6px;height:1px;
  background:linear-gradient(90deg,rgba(255,62,165,.5),rgba(34,211,238,.25))}
.lane-item:last-child::after{display:none}
.lane-item b{display:block;margin-bottom:5px;font-size:15px}
.lane-item span{color:var(--dim);font-size:14px}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--panel)}
table{width:100%;min-width:620px;border-collapse:collapse;font-size:14.6px}
thead th{background:rgba(168,85,247,.14);text-align:left;padding:13px 16px;
  font-size:13.5px;letter-spacing:.6px;color:#fff;border-bottom:1px solid var(--line)}
tbody td{padding:12px 16px;border-bottom:1px solid rgba(167,139,250,.09);color:var(--dim)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:rgba(168,85,247,.07);color:var(--txt)}
td.k{color:var(--txt);font-weight:600}
code.ch{font-family:Consolas,monospace;color:var(--amber);background:rgba(251,191,36,.10);
  border:1px solid rgba(251,191,36,.28);border-radius:6px;padding:2px 8px;font-size:13.5px;
  letter-spacing:1px;display:inline-block;user-select:all}

/* ---------- 代码块 / 复制 ---------- */
.code{position:relative;background:#0b0817;border:1px solid var(--line);border-radius:var(--r-s);
  padding:16px 18px;margin:0 0 14px}
.code .t{font-size:12.5px;color:var(--mute);margin-bottom:8px;letter-spacing:.6px}
.code pre{margin:0;overflow-x:auto}
.code code{color:var(--dim);font-size:13.8px;line-height:1.9;white-space:pre-wrap;word-break:break-word}
.code .copy{position:absolute;top:12px;right:12px;font-size:12px;padding:5px 12px;border-radius:8px;
  border:1px solid var(--line2);background:var(--panel2);color:var(--dim);cursor:pointer;font-family:inherit}
.code .copy:hover{color:#fff;border-color:var(--pink)}
.code .copy.ok{color:var(--green);border-color:rgba(74,222,128,.5)}

/* ---------- 下载区 ---------- */
.dl-hero{display:grid;grid-template-columns:1.22fr .78fr;gap:26px;align-items:stretch;
  background:linear-gradient(135deg,rgba(255,62,165,.14),rgba(34,211,238,.10));
  border:1px solid var(--line2);border-radius:20px;padding:34px;margin-top:8px}
.dl-hero-lead .pill{display:inline-block;font-size:12px;color:var(--pink);
  border:1px solid rgba(255,62,165,.4);border-radius:999px;padding:4px 12px;margin-bottom:14px;letter-spacing:1px}
.dl-hero-lead h2{font-size:clamp(1.35rem,2.4vw,1.85rem);margin-bottom:12px}
.dl-hero-lead p{color:var(--dim);font-size:15px;margin:0 0 22px}
.dl-hero-act{display:flex;gap:12px;flex-wrap:wrap}
.dl-hero-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.dl-hero-meta span{font-size:12.5px;color:var(--dim);background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:999px;padding:4px 12px}
.dl-hero-side{display:flex;flex-direction:column;justify-content:center;gap:12px}
.files{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--panel)}
.files-row{display:grid;grid-template-columns:250px 1fr;gap:0;border-bottom:1px solid rgba(167,139,250,.10)}
.files-row:last-child{border-bottom:0}
.files-row .n{padding:14px 18px;font-size:14.5px;color:var(--txt);font-weight:600;
  background:rgba(168,85,247,.07);border-right:1px solid var(--line)}
.files-row .d{padding:14px 18px;font-size:14.3px;color:var(--dim)}
.notice{border-left:3px solid var(--red);background:rgba(251,113,133,.08);
  border-radius:10px;padding:16px 20px;font-size:14.5px;color:var(--dim)}
.notice b{color:var(--red)}
.qr-card{background:#f7f9fc;border-radius:12px;padding:12px;display:inline-block;line-height:0}
.qr-card a{display:block;line-height:0}
.qr-card img{width:150px;height:150px}
.qr-card--lg img{width:212px;height:212px}

/* ---------- 弹窗 ---------- */
.dl-modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:18px}
.dl-modal[hidden]{display:none}
.dl-modal-mask{position:absolute;inset:0;background:rgba(4,2,10,.76);backdrop-filter:blur(4px)}
.dl-modal-box{position:relative;width:min(760px,100%);max-height:calc(100vh - 36px);overflow-y:auto;
  background:linear-gradient(160deg,#181230,#0d0a18);border:1px solid var(--line2);
  border-radius:20px;padding:28px;box-shadow:0 40px 90px -30px rgba(0,0,0,.9)}
.dl-modal-x{position:absolute;top:14px;right:16px;width:34px;height:34px;border-radius:9px;
  border:1px solid var(--line);background:transparent;color:var(--dim);font-size:20px;cursor:pointer;line-height:1}
.dl-modal-x:hover{color:#fff;border-color:var(--pink)}
.dl-modal-head .pill{display:inline-block;font-size:12px;color:var(--pink);border:1px solid rgba(255,62,165,.4);
  border-radius:999px;padding:4px 12px;margin-bottom:12px;letter-spacing:1px}
.dl-modal-head h2{font-size:1.45rem;margin-bottom:8px}
.dl-modal-head p{color:var(--dim);font-size:14.5px;margin:0}
.dl-modal-body{display:grid;grid-template-columns:262px minmax(0,1fr);gap:26px;margin:22px 0 16px;align-items:start}
.dl-modal-qr{text-align:center}
.dl-modal-qr p{font-size:13px;color:var(--mute);margin:10px 0 0}
.dl-modal-act{display:flex;flex-direction:column;gap:12px}
.dl-modal-act .btn{width:100%}
.dl-mini{list-style:none;padding:0;margin:6px 0 0;font-size:13px;color:var(--mute)}
.dl-mini li{padding-left:16px;position:relative;margin:5px 0}
.dl-mini li::before{content:"✓";position:absolute;left:0;color:var(--green)}
.dl-modal-foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:14px;font-size:12.5px;color:var(--mute)}
body.dl-lock{overflow:hidden}

/* ---------- FAQ 手风琴 ---------- */
.acc{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--panel)}
.acc-item{border-bottom:1px solid rgba(167,139,250,.10)}
.acc-item:last-child{border-bottom:0}
.acc-q{width:100%;text-align:left;background:transparent;border:0;color:var(--txt);
  font-family:inherit;font-size:15.4px;padding:17px 52px 17px 22px;position:relative;cursor:pointer;line-height:1.6}
.acc-q::after{content:"＋";position:absolute;right:22px;top:17px;color:var(--pink);font-size:17px}
.acc-item.open .acc-q::after{content:"－"}
.acc-q:hover{color:#fff}
.acc-a{display:none;padding:0 22px 18px;color:var(--dim);font-size:14.6px}
.acc-item.open .acc-a{display:block}
.acc-a p:last-child{margin-bottom:0}

/* ---------- 文档双栏 ---------- */
.doc{display:grid;grid-template-columns:var(--side) minmax(0,1fr);gap:var(--gap-doc);align-items:start}
.doc-main{min-width:0}
.doc-toc{position:sticky;top:calc(var(--header-h) + 24px);max-height:calc(100vh - var(--header-h) - 60px);
  overflow-y:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--panel);padding:16px 14px}
.doc-toc .toc-toggle{display:none;width:100%;text-align:left;background:transparent;border:0;color:var(--txt);
  font-family:inherit;font-size:15px;padding:4px 0;cursor:pointer}
.doc-toc .toc-toggle .ico{float:right;color:var(--pink)}
.doc-toc nav a{display:block;padding:8px 10px;border-radius:8px;color:var(--dim);font-size:14px;line-height:1.5}
.doc-toc nav a:hover{background:rgba(168,85,247,.10);color:#fff}
.doc-toc nav a.on{background:rgba(255,62,165,.14);color:#fff;box-shadow:inset 0 0 0 1px rgba(255,62,165,.3)}
.doc-main > section{padding:0 0 52px}
.doc-main > section:last-of-type{padding-bottom:0}
.doc-h2{font-size:clamp(1.22rem,2vw,1.55rem);padding-bottom:12px;margin-bottom:16px;
  border-bottom:1px solid var(--line);position:relative}
.doc-h2::after{content:"";position:absolute;left:0;bottom:-1px;width:74px;height:2px;background:var(--grad)}
.doc-h3{font-size:1.06rem;margin:22px 0 10px;color:#fff}
.doc-main p{color:var(--dim)}
.doc-main ul li{color:var(--dim)}
h2,h3,section[id]{scroll-margin-top:calc(var(--header-h) + 24px)}

/* ---------- 时间线 ---------- */
.tl{list-style:none;padding:0;margin:0;position:relative}
.tl::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--pink),var(--violet),var(--cyan))}
.tl li{position:relative;padding:0 0 26px 34px}
.tl li::before{content:"";position:absolute;left:3px;top:8px;width:14px;height:14px;border-radius:50%;
  background:#0d0a18;border:2px solid var(--pink)}
.tl li .d{font-size:12.5px;color:var(--cyan);letter-spacing:.8px;margin-bottom:3px}
.tl li b{display:block;font-size:16px;margin-bottom:4px}
.tl li p{color:var(--dim);font-size:14.5px;margin:0}

/* ---------- 内链模块 ---------- */
.seo-related{border:1px dashed var(--line2);border-radius:var(--r);padding:22px 24px;margin-top:8px;
  background:rgba(168,85,247,.06)}
.seo-related h2{font-size:1.05rem;margin-bottom:12px;color:var(--violet)}
.seo-related ul{margin:0;padding-left:18px;columns:2;column-gap:28px}
.seo-related li{margin:6px 0;font-size:14.5px}

/* ---------- 截图墙 ---------- */
.shot-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.shot-card{margin:0;position:relative;border-radius:14px;overflow:hidden;
  border:1px solid var(--line);background:var(--panel);transition:.2s}
.shot-card:hover{transform:translateY(-4px);border-color:rgba(255,62,165,.5);
  box-shadow:0 16px 40px -22px rgba(255,62,165,.7)}
.shot-btn{display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in;position:relative;line-height:0}
.shot-btn img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.shot-zoom{position:absolute;right:10px;bottom:10px;width:30px;height:30px;border-radius:9px;
  background:rgba(8,6,15,.72);color:#fff;font-size:15px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.18);opacity:0;transition:.2s}
.shot-card:hover .shot-zoom{opacity:1}
.shot-card figcaption{padding:10px 14px;font-size:13.5px;color:var(--dim);line-height:1.55;
  border-top:1px solid var(--line)}
@media (max-width:900px){.shot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.shot-grid{grid-template-columns:1fr}}

/* ---------- 灯箱 ---------- */
.lb{position:fixed;inset:0;z-index:130;display:flex;align-items:center;justify-content:center;padding:24px}
.lb[hidden]{display:none}
.lb-mask{position:absolute;inset:0;background:rgba(4,2,10,.9);backdrop-filter:blur(6px)}
.lb-img{position:relative;max-width:min(1100px,100%);max-height:calc(100vh - 130px);
  border-radius:12px;border:1px solid var(--line2);box-shadow:0 40px 90px -30px #000;background:#0b0817}
.lb-x,.lb-prev,.lb-next{position:absolute;z-index:2;border:1px solid var(--line2);
  background:rgba(20,16,38,.9);color:var(--txt);border-radius:12px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-family:inherit}
.lb-x{top:16px;right:18px;width:40px;height:40px;font-size:22px}
.lb-prev,.lb-next{top:50%;transform:translateY(-50%);width:46px;height:60px;font-size:26px}
.lb-prev{left:16px}
.lb-next{right:16px}
.lb-x:hover,.lb-prev:hover,.lb-next:hover{border-color:var(--pink);color:#fff}
.lb-cap{position:absolute;left:0;right:0;bottom:16px;text-align:center;color:var(--dim);font-size:14px;padding:0 24px}
body.lb-lock{overflow:hidden}
@media (max-width:560px){
  .lb{padding:12px}
  .lb-prev,.lb-next{width:40px;height:52px;font-size:22px}
  .lb-prev{left:6px}
  .lb-next{right:6px}
}

/* ---------- CTA ---------- */
.cta{text-align:center;padding:64px 0}
.cta h2{font-size:clamp(1.5rem,2.8vw,2.1rem);margin-bottom:14px}
.cta p{color:var(--dim);max-width:620px;margin:0 auto 26px}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);background:rgba(13,10,24,.7);padding:52px 0 28px;margin-top:20px}
.footer .fg{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.footer h4{font-size:14.5px;margin-bottom:14px;color:#fff}
.footer a,.footer p{color:var(--mute);font-size:14px}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{margin:7px 0}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.foot-brand img{height:26px;width:auto}
.foot-desc{font-size:13.6px;color:var(--mute);line-height:1.8}
.foot-bot{border-top:1px solid var(--line);margin-top:34px;padding-top:20px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.8px;color:var(--mute)}

/* ---------- 回顶 ---------- */
.totop{position:fixed;right:20px;bottom:22px;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line2);background:rgba(20,16,38,.92);color:var(--txt);font-size:18px;
  cursor:pointer;display:none;z-index:55;backdrop-filter:blur(8px)}
.totop.show{display:block}
.totop:hover{border-color:var(--pink);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  :root{--sp-section:66px;--sp-section-sm:46px}
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer .fg{grid-template-columns:1fr 1fr}
  .lane{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 0}
  .lane-item::after{display:none}
}
@media (max-width:1020px){
  .doc{grid-template-columns:minmax(0,1fr)}
  .doc-toc{position:static;max-height:none;margin-bottom:26px}
  .doc-toc .toc-toggle{display:block}
  .doc-toc nav{display:none}
  .doc-toc nav.open{display:block;margin-top:10px}
}
@media (max-width:900px){
  .nav{display:none}
  .burger{display:block}
  .g-3,.g-asym,.g-side{grid-template-columns:1fr}
  .dl-hero{grid-template-columns:1fr;padding:26px}
  .dl-hero-side{border-top:1px solid var(--line);padding-top:20px}
  .dl-modal-body{grid-template-columns:1fr;gap:20px}
  .dl-modal-qr{order:2}
  .sec-head{flex-direction:column;align-items:flex-start}
  .sec-head p{text-align:left}
  .files-row{grid-template-columns:1fr}
  .files-row .n{border-right:0;border-bottom:1px solid var(--line)}
  .seo-related ul{columns:1}
}
@media (max-width:720px){
  table.stack{min-width:0}
  table.stack thead{display:none}
  table.stack,table.stack tbody{display:block}
  table.stack tbody tr{display:block;padding:8px 16px 12px;border-bottom:1px solid var(--line)}
  table.stack tbody td{display:grid;grid-template-columns:96px minmax(0,1fr);gap:12px;
    padding:8px 0;border:0}
  table.stack tbody td::before{content:attr(data-label);font-size:12.6px;color:var(--mute)}
  .code code{white-space:pre-wrap;word-break:break-word}
}
@media (max-width:560px){
  :root{--gutter:16px;--sp-section:52px}
  .g-2,.g-4{grid-template-columns:1fr}
  .hero{padding:46px 0 34px}
  .hero-act .btn,.dl-hero-act .btn{width:100%}
  .brand .tag{display:none}
  .footer .fg{grid-template-columns:1fr}
  .dl-modal{padding:10px}
  .dl-modal-box{padding:20px 16px}
  .cta{padding:44px 0}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}