/* ==========================================================================
   OnePE 一盘走天下 · 官网样式表
   设计语言：深空科技风 / 冷色 + 青蓝辉光 / 玻璃拟态卡片
   ========================================================================== */

:root{
  --bg-0:#04070f;
  --bg-1:#070c17;
  --bg-2:#0a1120;
  --bg-3:#0e1728;
  --line:rgba(120,180,255,.14);
  --line-2:rgba(120,180,255,.26);

  --txt:   #e8f0ff;
  --txt-1: #b6c6e0;
  --txt-2: #7c8db0;
  --txt-3: #556180;

  --cy:  #22d3ee;
  --cy-d:#0891b2;
  --bl:  #3b82f6;
  --pu:  #8b5cf6;
  --gn:  #34d399;
  --or:  #fbbf24;
  --rd:  #f87171;

  --glow-cy:0 0 0 1px rgba(34,211,238,.28), 0 12px 40px -10px rgba(34,211,238,.42);
  --glow-bl:0 0 0 1px rgba(59,130,246,.28), 0 12px 40px -10px rgba(59,130,246,.42);

  --r-s:8px;  --r-m:14px;  --r-l:22px;
  --maxw:1200px;
  --hdr:62px;

  --ff:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --fm:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  color:var(--txt-1);
  background:var(--bg-0);
  overflow-x:hidden;
}

/* 星域背景 */
body::before{
  content:"";
  position:fixed; inset:0; z-index:-2;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(34,211,238,.15), transparent 62%),
    radial-gradient(900px 560px at 88% 4%,  rgba(139,92,246,.13), transparent 60%),
    radial-gradient(1200px 700px at 50% 108%, rgba(59,130,246,.12), transparent 64%),
    linear-gradient(180deg,#04070f 0%,#060b16 46%,#04070f 100%);
}
body::after{
  content:"";
  position:fixed; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(rgba(120,180,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,180,255,.028) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 70% 46% at 50% 22%, #000 18%, transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 70% 46% at 50% 22%, #000 18%, transparent 72%);
}

img{max-width:100%;height:auto;display:block}
a{color:var(--cy);text-decoration:none;transition:color .18s}
a:hover{color:#67e8f9}

h1,h2,h3,h4{color:var(--txt);line-height:1.3;margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
li{margin-bottom:.42em}
code{font-family:var(--fm);font-size:.88em;background:rgba(34,211,238,.1);
  border:1px solid rgba(34,211,238,.2);border-radius:5px;padding:.1em .42em;color:#7dd3fc}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ============================ 顶部导航 ============================ */
.hdr{
  position:sticky;top:0;z-index:900;height:var(--hdr);
  background:rgba(4,7,15,.82);
  backdrop-filter:blur(18px) saturate(180%);
  -webkit-backdrop-filter:blur(18px) saturate(180%);
  border-bottom:1px solid var(--line);
}
.hdr .wrap{height:100%;display:flex;align-items:center;gap:24px}

.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--txt);
  font-size:17px;letter-spacing:-.02em;white-space:nowrap;flex-shrink:0}
.logo:hover{color:var(--txt)}
.logo-mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--cy) 0%,var(--bl) 52%,var(--pu) 100%);
  display:grid;place-items:center;
  box-shadow:0 4px 16px -3px rgba(34,211,238,.6), inset 0 1px 0 rgba(255,255,255,.28);
}
.logo-mark svg{width:19px;height:19px;display:block}
.logo-sub{font-size:11px;font-weight:600;color:var(--txt-3);letter-spacing:.06em;
  padding-left:10px;margin-left:2px;border-left:1px solid var(--line-2)}

.nav{display:flex;gap:2px;margin-left:auto;align-items:center}
.nav a{
  color:var(--txt-2);font-size:14px;font-weight:500;padding:8px 13px;border-radius:9px;
  transition:color .18s,background .18s;white-space:nowrap;
}
.nav a:hover{color:var(--cy);background:rgba(34,211,238,.08)}

.hdr-cta{
  display:inline-flex;align-items:center;gap:7px;flex-shrink:0;
  padding:8px 17px;border-radius:9px;font-size:14px;font-weight:700;color:#02121a!important;
  background:linear-gradient(135deg,var(--cy),var(--bl));
  box-shadow:0 5px 20px -6px rgba(34,211,238,.72);
  transition:transform .18s,box-shadow .18s;
}
.hdr-cta:hover{transform:translateY(-1px);box-shadow:0 8px 26px -6px rgba(34,211,238,.9);color:#02121a!important}
.hdr-cta svg{width:15px;height:15px}

.nav-toggle{display:none;background:none;border:1px solid var(--line-2);color:var(--txt-1);
  width:38px;height:34px;border-radius:9px;cursor:pointer;padding:0;place-items:center}
.nav-toggle svg{width:18px;height:18px}

/* ============================ 按钮 ============================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:11px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:transform .18s,box-shadow .22s,background .22s,border-color .22s;
  white-space:nowrap;line-height:1.2;
}
.btn svg{width:17px;height:17px;flex-shrink:0}

.btn-primary{
  color:#02121a;
  background:linear-gradient(135deg,var(--cy) 0%,var(--bl) 100%);
  box-shadow:0 8px 28px -8px rgba(34,211,238,.8), inset 0 1px 0 rgba(255,255,255,.3);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px -8px rgba(34,211,238,.95);color:#02121a}

.btn-ghost{
  color:var(--txt);background:rgba(120,180,255,.07);border-color:var(--line-2);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(120,180,255,.13);
  border-color:rgba(34,211,238,.5);color:var(--txt)}

.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:9px}
.btn-lg{padding:16px 34px;font-size:16.5px;border-radius:13px}

/* ============================ 通用板块 ============================ */
.sec{padding:74px 0;position:relative}
.sec-head{text-align:center;max-width:760px;margin:0 auto 46px}
.sec-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cy);margin-bottom:14px;
  padding:5px 13px;border-radius:100px;
  background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.24);
}
.sec h2{font-size:clamp(26px,3.6vw,36px);margin-bottom:14px}
.sec-head p{color:var(--txt-2);font-size:16px;margin:0}

.card{
  background:linear-gradient(160deg,rgba(14,23,40,.86) 0%,rgba(8,14,26,.86) 100%);
  border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px;position:relative;overflow:hidden;
  transition:transform .24s,border-color .24s,box-shadow .24s;
}
.card:hover{border-color:var(--line-2);transform:translateY(-3px);
  box-shadow:0 18px 44px -18px rgba(34,211,238,.32)}

.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ============================ Hero ============================ */
.hero{padding:70px 0 58px;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}

.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:100px;
  background:rgba(120,180,255,.08);border:1px solid var(--line-2);color:var(--txt-1);
}
.badge svg{width:13px;height:13px}
.badge.hot{background:rgba(251,191,36,.1);border-color:rgba(251,191,36,.32);color:#fcd34d}
.badge.new{background:rgba(52,211,153,.1);border-color:rgba(52,211,153,.32);color:#6ee7b7}

.hero h1{
  font-size:clamp(34px,5.2vw,54px);line-height:1.14;margin-bottom:20px;
  letter-spacing:-.028em;font-weight:800;
}
.hero h1 .grad{
  background:linear-gradient(120deg,#67e8f9 0%,#3b82f6 46%,#a78bfa 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  color:transparent;
}
.hero-lead{font-size:17px;color:var(--txt-1);max-width:600px;margin-bottom:26px;line-height:1.8}
.hero-lead strong{color:var(--cy);font-weight:700}

.ver-strip{
  display:flex;align-items:center;gap:11px;flex-wrap:wrap;
  padding:13px 17px;margin-bottom:26px;border-radius:13px;
  background:linear-gradient(100deg,rgba(34,211,238,.1),rgba(59,130,246,.05));
  border:1px solid rgba(34,211,238,.22);
}
.ver-strip .ver{font-family:var(--fm);font-size:15px;font-weight:700;color:#67e8f9}
.ver-strip .sep{width:1px;height:15px;background:var(--line-2)}
.ver-strip .meta{font-size:13px;color:var(--txt-2)}
.ver-strip .dot{width:7px;height:7px;border-radius:50%;background:var(--gn);
  box-shadow:0 0 0 3px rgba(52,211,153,.2);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.42}}

.hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-bottom:24px}

.stat-row{display:flex;gap:30px;flex-wrap:wrap;padding-top:22px;
  border-top:1px solid var(--line)}
.stat b{display:block;font-size:25px;font-weight:800;color:var(--txt);
  font-family:var(--fm);letter-spacing:-.02em;line-height:1.2}
.stat span{font-size:12.5px;color:var(--txt-3);font-weight:500}

/* Hero 右侧视觉 */
.hero-visual{position:relative}
.hero-visual .frame{
  border-radius:20px;overflow:hidden;border:1px solid var(--line-2);
  background:var(--bg-2);box-shadow:0 30px 70px -26px rgba(0,0,0,.9),
    0 0 0 1px rgba(34,211,238,.1);
  position:relative;
}
.hero-visual .frame img{width:100%;display:block}
.hero-visual .glow{
  position:absolute;inset:-30px;z-index:-1;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.22),transparent 66%);
  filter:blur(30px);
}
.float-tag{
  position:absolute;padding:9px 15px;border-radius:11px;font-size:12.5px;font-weight:700;
  background:rgba(6,12,22,.92);border:1px solid var(--line-2);color:var(--txt);
  backdrop-filter:blur(10px);box-shadow:0 10px 28px -10px rgba(0,0,0,.8);
  display:flex;align-items:center;gap:7px;white-space:nowrap;
}
.float-tag svg{width:14px;height:14px}
.float-tag.t1{top:-13px;left:-13px;color:#67e8f9;border-color:rgba(34,211,238,.4)}
.float-tag.t2{bottom:-13px;right:-13px;color:#6ee7b7;border-color:rgba(52,211,153,.4)}

/* ============================ 版本对比表 ============================ */
.tbl-wrap{overflow-x:auto;border-radius:var(--r-l);border:1px solid var(--line);
  background:rgba(8,14,26,.72);-webkit-overflow-scrolling:touch}
table.vt{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
table.vt th,table.vt td{padding:14px 16px;text-align:center;border-bottom:1px solid var(--line)}
table.vt th{background:rgba(34,211,238,.07);color:var(--txt);font-weight:700;font-size:13.5px;
  white-space:nowrap}
table.vt td:first-child,table.vt th:first-child{text-align:left;color:var(--txt-1);font-weight:600}
table.vt tbody tr:hover{background:rgba(120,180,255,.045)}
table.vt tbody tr:last-child td{border-bottom:none}
table.vt .yes{color:var(--gn);font-weight:700}
table.vt .no{color:var(--txt-3)}
table.vt .hl{color:var(--cy);font-weight:700}
table.vt td .sz{display:block;font-size:12px;color:var(--txt-3);font-family:var(--fm);margin-top:2px}

/* ============================ 步骤 ============================ */
.steps{display:grid;gap:16px;counter-reset:st}
.step{
  display:grid;grid-template-columns:48px 1fr;gap:18px;align-items:start;
  padding:20px 22px;border-radius:var(--r-m);
  background:rgba(10,17,32,.72);border:1px solid var(--line);
  transition:border-color .2s,transform .2s;
}
.step:hover{border-color:var(--line-2);transform:translateX(3px)}
.step-n{
  counter-increment:st;width:48px;height:48px;border-radius:13px;display:grid;place-items:center;
  font-family:var(--fm);font-size:18px;font-weight:800;color:#02121a;
  background:linear-gradient(135deg,var(--cy),var(--bl));
  box-shadow:0 6px 20px -7px rgba(34,211,238,.7);
}
.step-n::before{content:counter(st,decimal-leading-zero)}
.step h4{margin:0 0 5px;font-size:16px}
.step p{margin:0;font-size:14.5px;color:var(--txt-2)}

/* ============================ 特色卡 ============================ */
.feat-ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(59,130,246,.1));
  border:1px solid rgba(34,211,238,.26);
}
.feat-ico svg{width:23px;height:23px;stroke:#67e8f9}
.card h3{font-size:17.5px;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--txt-2);margin:0}
.card .foot{margin-top:14px;padding-top:13px;border-top:1px solid var(--line);
  font-size:13px;color:var(--txt-3);font-family:var(--fm)}

/* ============================ 截图画廊 ============================ */
.gal{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:start}
.gal figure{margin:0;border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);cursor:zoom-in;position:relative;
  transition:border-color .22s,transform .22s,box-shadow .22s}
.gal figure:hover{border-color:rgba(34,211,238,.5);transform:translateY(-3px);
  box-shadow:0 16px 40px -18px rgba(34,211,238,.5)}
/* 让图片按原始比例完整显示，不做裁剪 */
.gal figure img{width:100%;height:auto;object-fit:contain;background:#060b14}
.gal figcaption{padding:11px 14px;font-size:13px;color:var(--txt-2);
  border-top:1px solid var(--line);background:rgba(6,11,20,.7)}
.gal figure.wide{grid-column:span 2}

/* 灯箱 */
.lightbox{
  position:fixed;inset:0;z-index:2000;background:rgba(2,5,11,.94);
  backdrop-filter:blur(14px);display:none;place-items:center;padding:32px;
}
.lightbox.on{display:grid}
.lightbox img{max-width:94vw;max-height:88vh;width:auto;border-radius:12px;
  border:1px solid var(--line-2);box-shadow:0 40px 90px -30px rgba(0,0,0,.95)}
.lb-close{position:absolute;top:20px;right:24px;width:44px;height:44px;border-radius:12px;
  background:rgba(120,180,255,.1);border:1px solid var(--line-2);color:var(--txt);
  font-size:22px;cursor:pointer;display:grid;place-items:center;line-height:1}
.lb-close:hover{background:rgba(120,180,255,.2)}
.lb-cap{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);
  font-size:14px;color:var(--txt-2);background:rgba(6,12,22,.9);padding:9px 20px;
  border-radius:100px;border:1px solid var(--line-2);white-space:nowrap}

/* ============================ 下载区 ============================ */
#download{padding:74px 0 84px}
.dl-note{
  display:flex;gap:14px;align-items:flex-start;max-width:840px;margin:0 auto 34px;
  padding:16px 20px;border-radius:var(--r-m);
  background:linear-gradient(100deg,rgba(251,191,36,.09),rgba(251,191,36,.02));
  border:1px solid rgba(251,191,36,.26);
}
.dl-note svg{width:21px;height:21px;stroke:#fcd34d;flex-shrink:0;margin-top:2px}
.dl-note p{margin:0;font-size:14.5px;color:#fde68a;line-height:1.7}
.dl-note strong{color:#fbbf24}

.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

.dl-card{
  background:linear-gradient(165deg,rgba(14,23,40,.92),rgba(7,12,22,.92));
  border:1px solid var(--line);border-radius:var(--r-l);padding:24px;
  position:relative;overflow:hidden;text-align:center;
  transition:border-color .24s,transform .24s,box-shadow .24s;
}
.dl-card:hover{transform:translateY(-4px);box-shadow:0 22px 52px -22px rgba(0,0,0,.9)}
.dl-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--accent,linear-gradient(90deg,var(--cy),var(--bl)));
}
.dl-card.c-baidu{--accent:linear-gradient(90deg,#3b82f6,#60a5fa)}
.dl-card.c-quark{--accent:linear-gradient(90deg,#8b5cf6,#c4b5fd)}
.dl-card.c-xunlei{--accent:linear-gradient(90deg,#22d3ee,#0ea5e9)}
.dl-card.c-baidu:hover{border-color:rgba(59,130,246,.52)}
.dl-card.c-quark:hover{border-color:rgba(139,92,246,.52)}
.dl-card.c-xunlei:hover{border-color:rgba(34,211,238,.52)}

.dl-brand{display:flex;align-items:center;justify-content:center;gap:9px;margin-bottom:6px}
.dl-brand svg{width:24px;height:24px;flex-shrink:0}
.dl-brand h3{margin:0;font-size:19px}
.dl-sub{font-size:12.5px;color:var(--txt-3);margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;gap:7px}
.pill{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:100px}
.pill.fast{background:rgba(52,211,153,.14);color:#6ee7b7;border:1px solid rgba(52,211,153,.3)}
.pill.big{background:rgba(59,130,246,.14);color:#93c5fd;border:1px solid rgba(59,130,246,.3)}

.qr-box{
  display:inline-block;padding:11px;margin-bottom:12px;border-radius:15px;
  background:#fff;box-shadow:0 10px 30px -12px rgba(0,0,0,.75),0 0 0 1px rgba(34,211,238,.3);
  position:relative;
}
.qr-box img{width:168px;height:168px;border-radius:6px}
.qr-box .qr-shine{
  position:absolute;inset:0;border-radius:15px;pointer-events:none;
  background:linear-gradient(140deg,rgba(34,211,238,.16),transparent 46%);
}
.qr-tip{font-size:12.5px;color:var(--txt-2);margin-bottom:16px;line-height:1.6}
.qr-tip b{color:var(--cy)}

.dl-pwd{
  display:flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--fm);font-size:14px;margin-bottom:16px;
  padding:9px 12px;border-radius:9px;background:rgba(120,180,255,.06);
  border:1px dashed var(--line-2);
}
.dl-pwd .k{color:var(--txt-3);font-size:12.5px}
.dl-pwd .v{color:#67e8f9;font-weight:700;letter-spacing:.1em;font-size:16px}
.dl-pwd button{background:none;border:none;color:var(--txt-3);cursor:pointer;padding:2px;
  display:grid;place-items:center;border-radius:5px;transition:color .18s,background .18s}
.dl-pwd button:hover{color:var(--cy);background:rgba(34,211,238,.1)}
.dl-pwd button svg{width:14px;height:14px}

.dl-btn{width:100%;justify-content:center}
.dl-card.c-baidu .dl-btn{background:linear-gradient(135deg,#3b82f6,#60a5fa);
  box-shadow:0 8px 26px -9px rgba(59,130,246,.85)}
.dl-card.c-quark .dl-btn{background:linear-gradient(135deg,#8b5cf6,#a78bfa);
  box-shadow:0 8px 26px -9px rgba(139,92,246,.85)}
.dl-card.c-xunlei .dl-btn{background:linear-gradient(135deg,#06b6d4,#22d3ee);
  box-shadow:0 8px 26px -9px rgba(34,211,238,.85)}
.dl-btn:hover{transform:translateY(-2px)}

.dl-foot{
  margin-top:34px;padding:22px 26px;border-radius:var(--r-l);
  background:rgba(10,17,32,.66);border:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px 34px;align-items:center;justify-content:center;
  font-size:14px;color:var(--txt-2);
}
.dl-foot .it{display:flex;align-items:center;gap:9px}
.dl-foot svg{width:17px;height:17px;stroke:var(--cy);flex-shrink:0}
.dl-foot code{font-size:14px}

/* ============================ 校验信息 ============================ */
.checksum{display:grid;gap:14px}
.cs-item{border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  background:rgba(8,14,26,.7)}
.cs-head{display:flex;align-items:center;gap:12px;padding:14px 18px;
  background:rgba(34,211,238,.06);border-bottom:1px solid var(--line);cursor:pointer}
.cs-head h4{margin:0;font-size:15.5px}
.cs-head .sz{margin-left:auto;font-family:var(--fm);font-size:13px;color:var(--cy);font-weight:700}
.cs-head .cat{font-size:11.5px;padding:3px 9px;border-radius:100px;
  background:rgba(120,180,255,.1);border:1px solid var(--line-2);color:var(--txt-2)}
.cs-body{padding:14px 18px;font-family:var(--fm);font-size:12.5px;line-height:2;color:var(--txt-2)}
.cs-body .r{display:flex;gap:12px;word-break:break-all}
.cs-body .r b{color:var(--txt-3);font-weight:600;min-width:62px;flex-shrink:0}
.cs-body .r span{color:var(--txt-1)}

/* ============================ 更新日志 ============================ */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--cy),var(--bl) 46%,rgba(120,180,255,.1))}
.tl-item{position:relative;margin-bottom:30px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{content:"";position:absolute;left:-30px;top:7px;width:12px;height:12px;
  border-radius:50%;background:var(--bg-1);border:2px solid var(--cyan,var(--cy));
  box-shadow:0 0 0 4px rgba(34,211,238,.14)}
.tl-item.old::before{border-color:var(--txt-3);box-shadow:0 0 0 4px rgba(120,180,255,.07)}
.tl-date{font-family:var(--fm);font-size:15px;font-weight:700;color:var(--cy);margin-bottom:9px;
  display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tl-item.old .tl-date{color:var(--txt-2)}
.tl-date .tag{font-family:var(--ff);font-size:11px;font-weight:700;padding:2px 9px;
  border-radius:100px;background:rgba(52,211,153,.14);color:#6ee7b7;
  border:1px solid rgba(52,211,153,.3);letter-spacing:.02em}
.tl-body{font-size:14.5px;color:var(--txt-2);line-height:1.85}
.tl-body p{margin:0 0 .62em}
.tl-body ul{margin:.4em 0 .8em;padding-left:1.15em}
.tl-body li{margin-bottom:.3em}
.tl-body code{font-size:12.5px}

/* ============================ 常见问题 ============================ */
.faq{max-width:920px;margin:0 auto;display:grid;gap:11px}
.q{border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  background:rgba(10,17,32,.62);transition:border-color .2s}
.q[open]{border-color:var(--line-2);background:rgba(10,17,32,.85)}
.q summary{
  padding:16px 46px 16px 20px;font-size:15.5px;font-weight:600;color:var(--txt);
  cursor:pointer;list-style:none;position:relative;line-height:1.55;
}
.q summary::-webkit-details-marker{display:none}
.q summary::after{
  content:"";position:absolute;right:19px;top:50%;width:8px;height:8px;
  border-right:2px solid var(--txt-2);border-bottom:2px solid var(--txt-2);
  transform:translateY(-70%) rotate(45deg);transition:transform .22s,border-color .22s;
}
.q[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--cy)}
.q summary:hover{color:var(--cy)}
.q-body{padding:0 20px 18px;font-size:14.5px;color:var(--txt-2);line-height:1.82;
  border-top:1px solid var(--line);padding-top:15px}
.q-body p:last-child{margin-bottom:0}
.q-body strong{color:var(--txt-1)}

/* ============================ PE 内核卡 ============================ */
.pe-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pe-card{
  border:1px solid var(--line);border-radius:var(--r-l);padding:24px;
  background:linear-gradient(158deg,rgba(14,23,40,.9),rgba(7,12,22,.9));
  position:relative;overflow:hidden;transition:border-color .24s,transform .24s;
}
.pe-card:hover{border-color:var(--line-2);transform:translateY(-3px)}
.pe-card .era{font-family:var(--fm);font-size:12.5px;color:var(--cy);
  letter-spacing:.05em;margin-bottom:11px;display:flex;align-items:center;gap:9px}
.pe-card .era::before{content:"";width:18px;height:2px;background:var(--cy);border-radius:2px}
.pe-card h3{font-size:19px;margin-bottom:6px}
.pe-card .from{font-size:13px;color:var(--txt-3);margin-bottom:13px}
.pe-card p{font-size:14.5px;color:var(--txt-2);margin-bottom:14px}
.pe-meta{display:flex;flex-wrap:wrap;gap:8px;padding-top:14px;border-top:1px solid var(--line)}
.pe-meta span{font-size:12px;padding:4px 11px;border-radius:100px;
  background:rgba(120,180,255,.08);border:1px solid var(--line-2);color:var(--txt-2)}

/* ============================ 结构图 ============================ */
.arch{display:grid;gap:12px;max-width:820px;margin:0 auto}
.arch-row{
  display:grid;grid-template-columns:130px 1fr;gap:16px;align-items:center;
  padding:16px 20px;border-radius:var(--r-m);border:1px solid var(--line);
  background:rgba(10,17,32,.7);
}
.arch-row .n{font-family:var(--fm);font-size:13.5px;font-weight:700;color:var(--cy)}
.arch-row .n em{display:block;font-style:normal;font-size:11.5px;color:var(--txt-3);
  font-family:var(--ff);font-weight:500;margin-top:2px}
.arch-row .d{font-size:14px;color:var(--txt-2)}
.arch-row .d b{color:var(--txt-1)}
.arch-row.hide{background:linear-gradient(100deg,rgba(139,92,246,.09),rgba(10,17,32,.7))}
.arch-row.hide .n{color:#c4b5fd}

/* ============================ 页脚 ============================ */
.ftr{border-top:1px solid var(--line);padding:48px 0 30px;margin-top:20px;
  background:linear-gradient(180deg,transparent,rgba(4,7,15,.86))}
.ftr-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;margin-bottom:36px}
.ftr-brand .logo{margin-bottom:14px}
.ftr-brand p{font-size:13.5px;color:var(--txt-3);line-height:1.75;max-width:330px}
.ftr h5{color:var(--txt);font-size:14px;margin:0 0 14px;font-weight:700}
.ftr ul{list-style:none;padding:0;margin:0}
.ftr li{margin-bottom:9px}
.ftr li a{font-size:13.5px;color:var(--txt-3)}
.ftr li a:hover{color:var(--cy)}
.ftr-bot{padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
  font-size:12.5px;color:var(--txt-3)}
.ftr-bot .dis{max-width:640px;line-height:1.7}

/* 回到顶部 */
.totop{
  position:fixed;right:24px;bottom:24px;z-index:800;width:46px;height:46px;border-radius:13px;
  background:rgba(10,17,32,.9);border:1px solid var(--line-2);color:var(--txt-1);
  cursor:pointer;display:grid;place-items:center;backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s,visibility .24s,transform .24s,background .2s;
}
.totop.on{opacity:1;visibility:visible;transform:translateY(0)}
.totop:hover{background:rgba(34,211,238,.16);color:var(--cy)}
.totop svg{width:19px;height:19px}

/* 复制提示 */
.toast{
  position:fixed;left:50%;bottom:38px;transform:translate(-50%,18px);z-index:3000;
  padding:11px 22px;border-radius:100px;font-size:14px;font-weight:600;color:#02121a;
  background:linear-gradient(135deg,var(--cy),var(--bl));
  box-shadow:0 14px 40px -12px rgba(34,211,238,.9);
  opacity:0;visibility:hidden;transition:opacity .24s,visibility .24s,transform .24s;
  white-space:nowrap;
}
.toast.on{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* ============================ 响应式 ============================ */
@media (max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1;max-width:660px;margin:0 auto}
  .g4{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .ftr-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:860px){
  .nav{
    position:fixed;top:var(--hdr);left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(5,9,18,.98);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);padding:10px 16px 16px;gap:2px;
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transition:max-height .3s,opacity .24s,visibility .24s,padding .24s;
  }
  .nav.open{max-height:460px;opacity:1;visibility:visible}
  .nav a{padding:12px 14px;border-radius:10px;font-size:15px}
  .nav-toggle{display:grid;margin-left:auto}
  .hdr-cta{display:none}
  .g3,.g2,.pe-grid{grid-template-columns:1fr}
  .gal{grid-template-columns:repeat(2,1fr)}
  .gal figure.wide{grid-column:span 2}
  .sec{padding:56px 0}
  .arch-row{grid-template-columns:1fr;gap:8px}
}
@media (max-width:600px){
  body{font-size:15.5px}
  .wrap{padding:0 16px}
  .hero{padding:44px 0 40px}
  .hero h1{font-size:30px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stat-row{gap:20px}
  .stat b{font-size:21px}
  .g4{grid-template-columns:1fr 1fr}
  .gal{grid-template-columns:1fr}
  .gal figure.wide{grid-column:span 1}
  .ftr-top{grid-template-columns:1fr;gap:26px}
  .lightbox{padding:14px}
  .lb-cap{font-size:12.5px;padding:7px 14px;max-width:88vw;overflow:hidden;text-overflow:ellipsis}
  .float-tag{display:none}
  .card{padding:20px}
  .step{grid-template-columns:40px 1fr;gap:14px;padding:17px}
  .step-n{width:40px;height:40px;font-size:15px;border-radius:11px}
  .dl-card{padding:20px}
  .qr-box img{width:152px;height:152px}
  .totop{right:14px;bottom:14px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* 打印 */
@media print{
  body::before,body::after,.hdr,.totop,.lightbox{display:none!important}
  body{background:#fff;color:#000}
}