/* ============================================================
   NanoCloud — Nebula Edition
   深空紫 · 极光 · 星座主题 · 共享样式
============================================================ */

:root{
    --bg-0:#070313;
    --bg-1:#0b0620;
    --bg-2:#120a2e;
    --ink:#f5f2ff;
    --ink-2:#c3b8e4;
    --muted:#8678ad;
    --violet:#8b5cf6;
    --violet-deep:#6d3df5;
    --cyan:#22d3ee;
    --magenta:#e879f9;
    --green:#34d399;
    --line:rgba(148,116,255,.16);
    --line-strong:rgba(148,116,255,.34);
    --glass:rgba(255,255,255,.035);
    --glass-2:rgba(255,255,255,.06);
    --grad-brand:linear-gradient(120deg,#8b5cf6 0%,#6d3df5 45%,#22d3ee 110%);
    --grad-cta:linear-gradient(135deg,#7c3aed,#6d3df5 55%,#4f46e5);
    --grad-text:linear-gradient(100deg,#a78bfa 0%,#8b5cf6 35%,#22d3ee 100%);
    --shadow-lg:0 30px 90px rgba(3,0,20,.55);
    --shadow-glow:0 12px 48px rgba(109,61,245,.38);
    --r-lg:24px;
    --r-md:18px;
    --r-sm:12px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    background:var(--bg-0);
    color:var(--ink);
    line-height:1.75;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
::selection{background:rgba(139,92,246,.45);color:#fff}

/* ---------- 背景层 ---------- */
.sky{position:fixed;inset:0;z-index:-2;pointer-events:none;
    background:
        radial-gradient(1100px 640px at 82% -8%, rgba(109,61,245,.28), transparent 62%),
        radial-gradient(900px 560px at -10% 18%, rgba(34,211,238,.12), transparent 60%),
        radial-gradient(1000px 700px at 18% 88%, rgba(232,121,249,.10), transparent 62%),
        linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 46%,#05020e 100%);
}
.sky::after{content:"";position:absolute;inset:0;opacity:.5;
    background-image:
        linear-gradient(rgba(148,116,255,.05) 1px,transparent 1px),
        linear-gradient(90deg,rgba(148,116,255,.05) 1px,transparent 1px);
    background-size:72px 72px;
    mask-image:radial-gradient(1000px 620px at 50% 0%,#000 0%,transparent 78%);
    -webkit-mask-image:radial-gradient(1000px 620px at 50% 0%,#000 0%,transparent 78%);
}
.star{position:fixed;border-radius:50%;background:#fff;z-index:-1;pointer-events:none;
    animation:twinkle 3.6s ease-in-out infinite}
@keyframes twinkle{0%,100%{opacity:.14;transform:scale(.8)}50%{opacity:.9;transform:scale(1.15)}}
.shooting{position:fixed;width:150px;height:1px;z-index:-1;pointer-events:none;
    background:linear-gradient(90deg,transparent,rgba(199,180,255,.85),transparent);
    transform:rotate(24deg);
    animation:shoot 9s linear infinite;
    animation-delay:var(--d,0s);
    opacity:0}
@keyframes shoot{
    0%{transform:translate(-10vw,-6vh) rotate(24deg);opacity:0}
    3%{opacity:.9}
    9%{transform:translate(46vw,26vh) rotate(24deg);opacity:0}
    100%{opacity:0}
}

/* ---------- 通用 ---------- */
.container{width:min(1180px,calc(100% - 44px));margin:0 auto}
section{position:relative;padding:96px 0}
.kicker{
    display:inline-flex;align-items:center;gap:9px;
    font-size:12px;font-weight:800;letter-spacing:.34em;text-transform:uppercase;
    color:var(--cyan);
    padding:7px 16px;border-radius:999px;
    border:1px solid rgba(34,211,238,.28);
    background:rgba(34,211,238,.06);
}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;
    background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.sec-head{text-align:center;max-width:680px;margin:0 auto 56px}
.sec-head h2{
    font-size:clamp(28px,4vw,42px);font-weight:900;letter-spacing:-.02em;
    margin:20px 0 14px;line-height:1.3;
}
.sec-head p{color:var(--muted);font-size:15.5px}
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.nw{white-space:nowrap}
.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}

.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s cubic-bezier(.16,1,.3,1)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* ---------- 按钮 ---------- */
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
    padding:15px 30px;border-radius:14px;font-size:15px;font-weight:800;letter-spacing:.02em;
    transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
    position:relative;overflow:hidden;white-space:nowrap;
}
.btn::after{content:"";position:absolute;top:0;left:-80%;width:50%;height:100%;
    background:linear-gradient(100deg,transparent,rgba(255,255,255,.32),transparent);
    transform:skewX(-20deg);transition:left .55s ease}
.btn:hover::after{left:130%}
.btn-primary{
    color:#fff;background:var(--grad-cta);
    box-shadow:var(--shadow-glow),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 60px rgba(109,61,245,.55),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-ghost{
    color:var(--ink);border:1px solid var(--line-strong);background:var(--glass);
    backdrop-filter:blur(8px);
}
.btn-ghost:hover{transform:translateY(-3px);border-color:rgba(148,116,255,.6);background:rgba(139,92,246,.12)}

/* ---------- 导航 ---------- */
.header{position:fixed;top:0;left:0;right:0;z-index:100;transition:.35s ease}
.header .nav{
    height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.header.scrolled{
    background:rgba(9,5,26,.78);
    backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
    border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:900;letter-spacing:-.02em}
.brand-logo{
    width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
    background:var(--grad-brand);
    box-shadow:0 8px 24px rgba(109,61,245,.45),inset 0 1px 0 rgba(255,255,255,.35);
}
.brand-logo svg{width:23px;height:23px;color:#fff}
.brand small{display:block;font-size:10px;font-weight:700;letter-spacing:.28em;color:var(--muted);line-height:1}
.nav-links{display:flex;align-items:center;gap:28px;font-size:13.5px;font-weight:700;color:var(--ink-2)}
.nav-links a{position:relative;padding:6px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;
    background:var(--grad-brand);transition:width .25s ease}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-cta{padding:10px 20px;border-radius:12px;font-size:13.5px;font-weight:800;color:#fff;
    background:var(--grad-cta);box-shadow:0 8px 24px rgba(109,61,245,.4);transition:.25s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(109,61,245,.55)}
.nav-login{font-size:13.5px;font-weight:700;color:var(--ink-2);transition:.2s}
.nav-login:hover{color:#fff}
.burger{display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
    background:var(--glass);place-items:center}
.burger svg{width:20px;height:20px;color:var(--ink)}

.m-menu{display:none;position:fixed;top:74px;left:14px;right:14px;z-index:99;
    background:rgba(12,7,30,.96);backdrop-filter:blur(24px);
    border:1px solid var(--line);border-radius:20px;padding:14px;
    box-shadow:var(--shadow-lg)}
.m-menu.open{display:block}
.m-menu a{display:block;padding:13px 16px;border-radius:12px;font-weight:700;color:var(--ink-2)}
.m-menu a:hover{background:rgba(139,92,246,.12);color:#fff}
.m-menu .m-cta{margin-top:8px;text-align:center;color:#fff;background:var(--grad-cta)}

/* ---------- HERO（主页） ---------- */
.hero{padding:172px 0 80px;text-align:center;overflow:hidden}
.orbit{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);
    width:1180px;height:1180px;pointer-events:none;opacity:.5}
.orbit i{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(148,116,255,.10)}
.orbit i:nth-child(2){inset:130px;border-color:rgba(148,116,255,.14);border-style:dashed;animation:spin 90s linear infinite}
.orbit i:nth-child(3){inset:280px;border-color:rgba(148,116,255,.09)}
.orbit b{position:absolute;top:130px;left:50%;width:9px;height:9px;border-radius:50%;
    background:var(--cyan);box-shadow:0 0 16px var(--cyan)}
@keyframes spin{to{transform:rotate(360deg)}}
.constellation{position:absolute;pointer-events:none;opacity:.95;filter:drop-shadow(0 0 6px rgba(167,139,250,.55))}
.constellation circle{fill:#d8ccff}
.constellation .halo{fill:rgba(167,139,250,.28)}
.constellation line{stroke:rgba(178,155,255,.5);stroke-width:1;stroke-dasharray:3 5}

.hero-badge{
    display:inline-flex;align-items:center;gap:10px;
    padding:9px 20px;border-radius:999px;font-size:13px;font-weight:700;color:var(--ink-2);
    border:1px solid var(--line-strong);background:rgba(139,92,246,.09);
    backdrop-filter:blur(10px);
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);
    box-shadow:0 0 0 0 rgba(52,211,153,.6);animation:pulse 2.2s infinite}
@keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(52,211,153,.55)}
    70%{box-shadow:0 0 0 9px rgba(52,211,153,0)}
    100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}
}
.hero h1{
    margin:30px 0 22px;
    font-size:clamp(42px,7.4vw,84px);font-weight:900;letter-spacing:-.03em;line-height:1.14;
}
.hero h1 .row2{display:block;margin-top:6px}
.hero-desc{max-width:640px;margin:0 auto;color:var(--ink-2);font-size:clamp(15px,1.6vw,17.5px)}
.hero-desc strong{color:#fff;font-weight:800}
.hero-actions{margin-top:38px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.hero-note{margin-top:16px;font-size:12.5px;color:var(--muted)}
.hero-note b{color:var(--cyan);font-weight:800}

.hero-stats{
    margin:64px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
    width:min(920px,100%);
    list-style:none;
}
.stat{
    padding:24px 12px;border-radius:var(--r-md);
    border:1px solid var(--line);background:var(--glass);
    backdrop-filter:blur(14px);
    transition:.3s ease;
}
.stat:hover{transform:translateY(-5px);border-color:var(--line-strong);background:var(--glass-2)}
.stat .num{font-size:clamp(26px,3vw,36px);font-weight:900;letter-spacing:-.02em;
    background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{margin-top:4px;font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.08em}

/* ---------- 控制台 mockup ---------- */
.console-wrap{margin:74px auto 0;width:min(980px,100%);position:relative}
.console-wrap::before{content:"";position:absolute;inset:-1px;border-radius:26px;z-index:0;
    background:linear-gradient(120deg,rgba(139,92,246,.5),rgba(34,211,238,.35),rgba(232,121,249,.4));
    filter:blur(26px);opacity:.35}
.console{
    position:relative;z-index:1;border-radius:26px;overflow:hidden;
    border:1px solid var(--line-strong);
    background:linear-gradient(165deg,rgba(24,14,54,.92),rgba(10,5,28,.96));
    box-shadow:var(--shadow-lg);
    text-align:left;
}
.console-bar{display:flex;align-items:center;gap:8px;padding:15px 20px;
    border-bottom:1px solid var(--line);background:rgba(255,255,255,.025)}
.console-bar i{width:11px;height:11px;border-radius:50%}
.console-bar i:nth-child(1){background:#ff5f57}.console-bar i:nth-child(2){background:#febc2e}.console-bar i:nth-child(3){background:#28c840}
.console-bar span{margin-left:12px;font-size:12px;color:var(--muted);letter-spacing:.06em}
.console-body{display:grid;grid-template-columns:1.15fr .85fr;gap:0}
.cblock{padding:26px 28px}
.cblock + .cblock{border-left:1px solid var(--line)}
.clabel{font-size:11px;font-weight:800;letter-spacing:.22em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.flow{display:flex;align-items:center;gap:22px}
.ring{position:relative;width:108px;height:108px;flex:none}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring .track{fill:none;stroke:rgba(148,116,255,.16);stroke-width:9}
.ring .bar{fill:none;stroke:url(#ringGrad);stroke-width:9;stroke-linecap:round;
    stroke-dasharray:283;stroke-dashoffset:164;animation:fill 1.6s .4s cubic-bezier(.16,1,.3,1) both}
@keyframes fill{from{stroke-dashoffset:283}to{stroke-dashoffset:164}}
.ring .pct{position:absolute;inset:0;display:grid;place-items:center;font-size:19px;font-weight:900}
.flow-meta .big{font-size:24px;font-weight:900;letter-spacing:-.02em}
.flow-meta .sub{font-size:12.5px;color:var(--muted);margin-top:3px}
.chip-row{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.chip{font-size:11.5px;font-weight:700;padding:5px 11px;border-radius:999px;color:var(--cyan);
    border:1px solid rgba(34,211,238,.3);background:rgba(34,211,238,.07)}
.chip.v{color:#c4b5fd;border-color:rgba(148,116,255,.35);background:rgba(139,92,246,.1)}
.node-list{display:flex;flex-direction:column;gap:11px}
.node{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:13px;
    border:1px solid var(--line);background:var(--glass);font-size:13px;transition:.25s}
.node:hover{border-color:var(--line-strong);background:var(--glass-2)}
.node .st{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 8px rgba(52,211,153,.8);flex:none}
.node .nm{font-weight:800}
.node .ms{margin-left:auto;color:var(--muted);font-size:12px}
.node .ms b{color:var(--cyan);font-weight:800}
.spark{margin-top:20px}
.spark svg{width:100%;height:74px}
.demo-tag{position:absolute;top:56px;right:16px;z-index:2;font-size:10.5px;color:var(--muted);
    border:1px solid var(--line);border-radius:999px;padding:3px 10px;background:rgba(7,3,19,.7);letter-spacing:.1em}

/* ---------- 跑马灯 ---------- */
.marquee{padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    background:rgba(139,92,246,.04);overflow:hidden}
.mq-track{display:flex;gap:44px;width:max-content;animation:mq 30s linear infinite}
.mq-track span{display:inline-flex;align-items:center;gap:12px;font-size:14px;font-weight:800;
    letter-spacing:.14em;color:var(--ink-2);white-space:nowrap}
.mq-track span::before{content:"✦";font-size:12px;color:var(--violet)}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- 官方渠道 ---------- */
.official-note{
    display:flex;align-items:center;gap:12px;max-width:720px;margin:-18px auto 40px;
    padding:13px 20px;border-radius:14px;font-size:13.5px;color:var(--ink-2);
    border:1px solid var(--line);background:var(--glass);
}
.official-note svg{width:17px;height:17px;color:var(--cyan);flex:none}
.official-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.o-item{
    display:flex;align-items:center;gap:18px;padding:20px 22px;border-radius:var(--r-md);
    border:1px solid var(--line);background:var(--glass);
    transition:.28s ease;position:relative;overflow:hidden;
}
.o-item::before{content:"";position:absolute;inset:0;opacity:0;transition:.3s;
    background:radial-gradient(420px 120px at var(--mx,50%) var(--my,50%),rgba(139,92,246,.14),transparent 70%)}
.o-item:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--glass-2);box-shadow:0 18px 46px rgba(3,0,20,.5)}
.o-item:hover::before{opacity:1}
.o-num{
    font-size:12px;font-weight:900;color:var(--violet);letter-spacing:.1em;
    width:46px;height:46px;flex:none;display:grid;place-items:center;border-radius:13px;
    border:1px solid rgba(148,116,255,.3);background:rgba(139,92,246,.1);
}
.o-info{min-width:0}
.o-name{font-size:15.5px;font-weight:800;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.o-type{font-size:10px;font-weight:800;letter-spacing:.06em;padding:2.5px 9px;border-radius:999px;
    color:#c4b5fd;border:1px solid rgba(148,116,255,.35);background:rgba(139,92,246,.1)}
.o-type.hot{color:#fff;background:var(--grad-brand);border-color:transparent}
.o-url{font-size:12.5px;color:var(--muted);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.o-arrow{margin-left:auto;flex:none;color:var(--muted);transition:.28s;transform:rotate(-45deg)}
.o-item:hover .o-arrow{color:var(--cyan);transform:rotate(0)}
.o-arrow svg{width:18px;height:18px}

/* ---------- 特性 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.f-card{
    position:relative;padding:34px 30px;border-radius:var(--r-lg);overflow:hidden;
    border:1px solid var(--line);background:linear-gradient(170deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
    backdrop-filter:blur(14px);transition:.3s ease;
}
.f-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 24px 60px rgba(3,0,20,.55)}
.f-big{
    position:absolute;right:14px;bottom:-14px;font-size:88px;font-weight:900;letter-spacing:-.04em;
    color:transparent;-webkit-text-stroke:1px rgba(148,116,255,.22);line-height:1;pointer-events:none;
}
.f-icon{
    width:56px;height:56px;border-radius:16px;display:grid;place-items:center;margin-bottom:22px;
    color:#fff;background:var(--grad-brand);
    box-shadow:0 10px 30px rgba(109,61,245,.4),inset 0 1px 0 rgba(255,255,255,.35);
}
.f-icon svg{width:27px;height:27px}
.f-card h3{font-size:19px;font-weight:900;margin-bottom:10px;letter-spacing:-.01em}
.f-card p{font-size:14px;color:var(--muted)}

/* ---------- 套餐 ---------- */
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
.p-card{
    position:relative;display:flex;flex-direction:column;
    padding:30px 26px;border-radius:var(--r-lg);
    border:1px solid var(--line);background:var(--glass);
    backdrop-filter:blur(14px);transition:.3s ease;
}
.p-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 24px 60px rgba(3,0,20,.55)}
.p-top{display:flex;align-items:center;gap:10px}
.p-sign{font-size:22px;line-height:1;color:#c4b5fd}
.p-name{font-size:17.5px;font-weight:900;letter-spacing:-.01em}
.p-tagline{margin-top:5px;font-size:11.5px;font-weight:700;letter-spacing:.05em;color:var(--muted)}
.p-price{margin:22px 0 4px;display:flex;align-items:baseline;gap:6px}
.p-price .cur{font-size:16px;font-weight:800;color:var(--ink-2)}
.p-price .val{font-size:44px;font-weight:900;letter-spacing:-.04em;line-height:1;
    background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.p-price .per{font-size:12.5px;color:var(--muted);font-weight:700}
.p-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:18px 0 20px}
.p-meta i{font-style:normal;text-align:center;padding:8px 4px;border-radius:10px;
    font-size:12px;font-weight:800;color:var(--ink-2);
    border:1px solid var(--line);background:rgba(255,255,255,.03)}
.p-meta i b{display:block;font-size:13.5px;color:#fff}
.p-feats{list-style:none;display:flex;flex-direction:column;gap:11px;margin-bottom:26px}
.p-feats li{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-2)}
.p-feats li .ck{flex:none;width:18px;height:18px;border-radius:50%;display:grid;place-items:center;margin-top:2px;
    color:#fff;background:rgba(52,211,153,.18);border:1px solid rgba(52,211,153,.4)}
.p-feats li .ck svg{width:10px;height:10px}
.p-btn{margin-top:auto;text-align:center;padding:13px 18px;border-radius:13px;font-size:14px;font-weight:800;
    border:1px solid var(--line-strong);color:var(--ink);background:var(--glass-2);transition:.25s}
.p-btn:hover{border-color:rgba(148,116,255,.65);background:rgba(139,92,246,.14);transform:translateY(-2px)}

.p-card.popular{
    border:1px solid transparent;
    background:
        linear-gradient(170deg,rgba(38,20,84,.94),rgba(14,7,36,.96)) padding-box,
        linear-gradient(150deg,rgba(167,139,250,.9),rgba(34,211,238,.55),rgba(232,121,249,.7)) border-box;
    box-shadow:0 26px 70px rgba(76,29,149,.45);
    transform:translateY(-12px);
}
.p-card.popular:hover{transform:translateY(-18px)}
.pop-badge{
    position:absolute;top:-13px;left:50%;transform:translateX(-50%);
    display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
    font-size:11px;font-weight:900;letter-spacing:.12em;color:#fff;
    padding:6px 16px;border-radius:999px;background:var(--grad-cta);
    box-shadow:0 8px 24px rgba(109,61,245,.55);
}
.pop-badge svg{width:11px;height:11px}
.p-card.popular .p-btn{border:0;color:#fff;background:var(--grad-cta);
    box-shadow:var(--shadow-glow),inset 0 1px 0 rgba(255,255,255,.28)}
.p-card.popular .p-btn:hover{transform:translateY(-2px);box-shadow:0 16px 44px rgba(109,61,245,.6)}

/* ---------- Telegram ---------- */
.tg-wrap{position:relative;border-radius:28px;overflow:hidden;
    border:1px solid rgba(148,116,255,.3)}
.tg-bg{position:absolute;inset:0;
    background:
        radial-gradient(600px 300px at 85% 20%,rgba(34,211,238,.28),transparent 65%),
        radial-gradient(700px 340px at 12% 90%,rgba(232,121,249,.22),transparent 65%),
        linear-gradient(120deg,#2a1065 0%,#4c1d95 48%,#1e1b4b 100%)}
.tg-bg::after{content:"";position:absolute;inset:0;opacity:.35;
    background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
    background-size:26px 26px;
    mask-image:radial-gradient(700px 340px at 70% 30%,#000,transparent 75%);
    -webkit-mask-image:radial-gradient(700px 340px at 70% 30%,#000,transparent 75%)}
.tg-inner{position:relative;display:flex;align-items:center;gap:34px;padding:52px 54px}
.tg-icon{
    width:74px;height:74px;flex:none;border-radius:22px;display:grid;place-items:center;color:#fff;
    background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);
    backdrop-filter:blur(10px);box-shadow:0 14px 40px rgba(0,0,0,.3);
}
.tg-icon svg{width:38px;height:38px}
.tg-copy{flex:1;min-width:0}
.tg-copy .k{font-size:11.5px;font-weight:900;letter-spacing:.3em;color:rgba(255,255,255,.72)}
.tg-copy h3{font-size:clamp(22px,2.6vw,30px);font-weight:900;margin:8px 0 8px;letter-spacing:-.01em;color:#fff}
.tg-copy p{font-size:14px;color:rgba(255,255,255,.78);max-width:460px}
.tg-btn{flex:none;display:inline-flex;align-items:center;gap:10px;
    padding:16px 30px;border-radius:15px;font-size:15px;font-weight:900;
    background:#fff;color:#4c1d95;box-shadow:0 14px 40px rgba(0,0,0,.28);transition:.25s}
.tg-btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 20px 50px rgba(0,0,0,.4)}
.tg-btn svg{width:19px;height:19px}

/* ---------- 客户端 ---------- */
.client-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cl-card{
    padding:30px 26px;border-radius:var(--r-lg);text-align:center;
    border:1px solid var(--line);background:var(--glass);
    backdrop-filter:blur(14px);transition:.3s ease;position:relative;overflow:hidden;
}
.cl-card::before{content:"";position:absolute;top:-60px;left:50%;transform:translateX(-50%);
    width:200px;height:120px;border-radius:50%;filter:blur(38px);opacity:0;transition:.35s;
    background:rgba(139,92,246,.35)}
.cl-card:hover{transform:translateY(-6px);border-color:var(--line-strong)}
.cl-card:hover::before{opacity:1}
.cl-icon{width:62px;height:62px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;
    color:#c4b5fd;border:1px solid rgba(148,116,255,.3);background:rgba(139,92,246,.1)}
.cl-icon svg{width:30px;height:30px}
.cl-card h3{font-size:17px;font-weight:900}
.cl-card .plat{font-size:11.5px;color:var(--muted);font-weight:700;letter-spacing:.12em;margin:5px 0 20px}
.cl-dl{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:12px;
    font-size:13px;font-weight:800;color:var(--ink);
    border:1px solid var(--line-strong);background:var(--glass-2);transition:.25s}
.cl-dl:hover{color:#fff;border-color:rgba(148,116,255,.65);background:rgba(139,92,246,.16)}
.cl-dl svg{width:14px;height:14px}
.client-note{text-align:center;margin-top:26px;font-size:12.5px;color:var(--muted)}

/* ---------- 邀请 ---------- */
.invite-wrap{position:relative;border-radius:28px;overflow:hidden;
    border:1px solid rgba(148,116,255,.3);
    background:linear-gradient(150deg,rgba(38,20,84,.75),rgba(10,5,28,.9))}
.invite-wrap::before{content:"";position:absolute;inset:0;
    background:radial-gradient(560px 260px at 8% 10%,rgba(139,92,246,.3),transparent 60%),
               radial-gradient(460px 240px at 92% 88%,rgba(34,211,238,.16),transparent 60%)}
.invite-inner{position:relative;display:flex;align-items:center;gap:38px;padding:50px 54px}
.invite-num{
    flex:none;width:150px;height:150px;border-radius:34px;display:grid;place-items:center;
    font-size:74px;font-weight:900;letter-spacing:-.04em;color:#fff;
    background:var(--grad-brand);
    box-shadow:var(--shadow-glow),inset 0 2px 0 rgba(255,255,255,.35);
    position:relative;
}
.invite-num::after{content:"";position:absolute;inset:-9px;border-radius:41px;
    border:1px dashed rgba(255,255,255,.3);animation:spin 26s linear infinite}
.invite-copy h3{font-size:clamp(22px,2.6vw,30px);font-weight:900;letter-spacing:-.01em;margin:8px 0 10px}
.invite-copy p{font-size:14.5px;color:var(--ink-2);max-width:520px}
.invite-actions{margin-top:24px;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
details{
    border:1px solid var(--line);border-radius:var(--r-md);
    background:var(--glass);backdrop-filter:blur(12px);
    transition:.3s ease;overflow:hidden;
}
details[open]{border-color:var(--line-strong);background:var(--glass-2)}
summary{
    list-style:none;display:flex;align-items:center;gap:16px;cursor:pointer;
    padding:20px 24px;font-size:15.5px;font-weight:800;
}
summary::-webkit-details-marker{display:none}
summary .qi{flex:none;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;
    font-size:13px;font-weight:900;color:var(--violet);
    border:1px solid rgba(148,116,255,.35);background:rgba(139,92,246,.1)}
summary .tw{margin-left:auto;flex:none;width:26px;height:26px;border-radius:50%;position:relative;
    border:1px solid var(--line-strong);transition:.3s}
summary .tw::before,summary .tw::after{content:"";position:absolute;top:50%;left:50%;width:10px;height:1.6px;
    border-radius:2px;background:var(--ink-2);transform:translate(-50%,-50%);transition:.3s}
summary .tw::after{transform:translate(-50%,-50%) rotate(90deg)}
details[open] summary .tw{border-color:var(--violet);background:rgba(139,92,246,.16)}
details[open] summary .tw::after{transform:translate(-50%,-50%) rotate(0)}
details .ans{padding:0 24px 22px 70px;color:var(--muted);font-size:14px}
details .ans b{color:var(--ink-2)}

/* ---------- 页脚 ---------- */
footer{margin-top:40px;border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(12,6,30,.5),#05020e)}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px}
.f-brand .brand{margin-bottom:16px}
.f-brand p{font-size:13.5px;color:var(--muted);max-width:320px}
.f-col h4{font-size:12px;font-weight:900;letter-spacing:.22em;color:var(--ink-2);text-transform:uppercase;margin-bottom:18px}
.f-col a{display:block;font-size:13.5px;color:var(--muted);padding:5.5px 0;transition:.2s}
.f-col a:hover{color:#fff;transform:translateX(3px)}
.copyright{
    display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
    padding:22px 0 30px;border-top:1px solid var(--line);
    font-size:12.5px;color:var(--muted);
}
.copyright .links{display:flex;gap:20px}
.copyright a:hover{color:#fff}

/* ---------- 回顶 ---------- */
.to-top{position:fixed;right:26px;bottom:26px;z-index:90;width:46px;height:46px;border-radius:14px;
    display:grid;place-items:center;color:#fff;
    background:var(--grad-cta);box-shadow:var(--shadow-glow);
    opacity:0;transform:translateY(16px);pointer-events:none;transition:.35s}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{transform:translateY(-3px)}
.to-top svg{width:19px;height:19px}

/* ============================================================
   子页（官方渠道详情页）专属组件
============================================================ */

/* 面包屑 */
.crumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;
    padding:104px 0 0;font-size:12.5px;color:var(--muted)}
.crumb a{transition:.2s}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{opacity:.5}
.crumb b{color:var(--ink-2);font-weight:800}

/* 子页头 */
.page-hero{padding:56px 0 30px;text-align:center;position:relative}
.page-hero h1{font-size:clamp(30px,4.8vw,54px);font-weight:900;letter-spacing:-.02em;margin:24px 0 16px;line-height:1.22}
.page-hero .lede{max-width:640px;margin:0 auto;color:var(--ink-2);font-size:clamp(14.5px,1.5vw,16.5px)}
.domain-pill{
    display:inline-flex;align-items:center;gap:10px;margin-top:22px;
    padding:11px 24px;border-radius:999px;font-size:14px;font-weight:800;letter-spacing:.02em;
    color:#d8ccff;border:1px solid var(--line-strong);background:rgba(139,92,246,.1);
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.domain-pill::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);
    box-shadow:0 0 10px rgba(52,211,153,.8)}
.page-hero-actions{margin-top:30px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* 注册 CTA 大卡 */
.reg-cta{
    position:relative;max-width:820px;margin:44px auto 0;border-radius:24px;overflow:hidden;
    border:1px solid rgba(148,116,255,.35);
    background:linear-gradient(120deg,rgba(44,22,96,.85),rgba(14,7,36,.95));
}
.reg-cta::before{content:"";position:absolute;inset:0;
    background:radial-gradient(420px 200px at 88% 12%,rgba(34,211,238,.2),transparent 65%),
               radial-gradient(420px 200px at 8% 92%,rgba(232,121,249,.18),transparent 65%)}
.reg-inner{position:relative;display:flex;align-items:center;gap:28px;padding:34px 40px;flex-wrap:wrap}
.reg-copy{flex:1;min-width:250px}
.reg-copy h2{font-size:21px;font-weight:900;margin-bottom:6px}
.reg-copy p{font-size:13.5px;color:var(--muted)}

/* 正文 prose */
.prose{max-width:800px;margin:0 auto}
.prose h2{font-size:clamp(21px,2.6vw,27px);font-weight:900;letter-spacing:-.01em;margin:54px 0 16px}
.prose h2 .grad-text{margin-right:2px}
.prose h3{font-size:17px;font-weight:900;margin:30px 0 10px}
.prose p{color:var(--ink-2);font-size:15px;margin:13px 0}
.prose p b,.prose li b{color:#fff;font-weight:800}
.prose ul{list-style:none;margin:14px 0;display:flex;flex-direction:column;gap:10px}
.prose ul li{display:flex;gap:11px;color:var(--ink-2);font-size:14.5px}
.prose ul li::before{content:"✦";color:var(--violet);flex:none;margin-top:1px}
.prose .small-note{font-size:12.5px;color:var(--muted);margin-top:8px}

/* 步骤 */
.steps{list-style:none;counter-reset:step;display:flex;flex-direction:column;gap:14px;margin:20px 0 8px}
.steps li{
    counter-increment:step;position:relative;
    display:flex;gap:18px;align-items:flex-start;
    padding:18px 22px;border-radius:var(--r-md);
    border:1px solid var(--line);background:var(--glass);
}
.steps li::before{
    content:"0" counter(step);flex:none;
    font-size:13px;font-weight:900;color:var(--violet);letter-spacing:.06em;
    width:44px;height:44px;display:grid;place-items:center;border-radius:13px;
    border:1px solid rgba(148,116,255,.3);background:rgba(139,92,246,.1);
}
.steps li .st-body b{display:block;font-size:15px;font-weight:800;margin-bottom:3px}
.steps li .st-body{font-size:13.5px;color:var(--muted)}

/* 速览表 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass)}
.tbl{width:100%;border-collapse:collapse;font-size:13.5px;min-width:560px}
.tbl th{font-size:11.5px;font-weight:900;letter-spacing:.14em;text-transform:uppercase;
    color:var(--muted);text-align:left;padding:14px 18px;border-bottom:1px solid var(--line)}
.tbl td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.tbl tr:last-child td{border-bottom:0}
.tbl td b{color:#fff;font-weight:800}
.tbl .hl{color:var(--cyan);font-weight:800}
.tbl tr:hover td{background:rgba(139,92,246,.05)}

/* 场景/要点卡 */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0 8px}
.scene{
    padding:22px 22px;border-radius:var(--r-md);
    border:1px solid var(--line);background:var(--glass);transition:.28s
}
.scene:hover{border-color:var(--line-strong);transform:translateY(-4px)}
.scene .sc-ico{font-size:20px;margin-bottom:10px;display:block}
.scene b{display:block;font-size:14.5px;font-weight:800;margin-bottom:6px}
.scene p{font-size:12.5px;color:var(--muted);margin:0}

/* 相关入口 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}

/* 页内 FAQ 缩距 */
.faq-sub{max-width:800px;margin:0 auto}

/* 区块底部「查看全部」 */
.sec-foot{text-align:center;margin-top:40px}
.more-link{
    display:inline-flex;align-items:center;gap:8px;
    padding:12px 26px;border-radius:999px;
    font-size:13.5px;font-weight:800;color:var(--ink-2);
    border:1px solid var(--line-strong);background:var(--glass);
    transition:.25s;
}
.more-link:hover{color:#fff;border-color:rgba(148,116,255,.65);background:rgba(139,92,246,.14);transform:translateY(-2px)}
.more-link svg{width:15px;height:15px;transition:.25s}
.more-link:hover svg{transform:translateX(3px)}

/* FAQ 分组 */
.faq-group{max-width:800px;margin:0 auto 34px}
.faq-group h3{
    display:flex;align-items:center;gap:10px;
    font-size:14px;font-weight:900;letter-spacing:.1em;color:var(--ink-2);
    margin-bottom:14px;
}
.faq-group h3::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
    .pricing-grid{grid-template-columns:repeat(2,1fr)}
    .p-card.popular{transform:none}
    .p-card.popular:hover{transform:translateY(-6px)}
    .client-grid{grid-template-columns:repeat(2,1fr)}
    .footer-main{grid-template-columns:1fr 1fr}
    .console-body{grid-template-columns:1fr}
    .cblock + .cblock{border-left:0;border-top:1px solid var(--line)}
    .scene-grid,.related-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
    .nav-links,.nav-login{display:none}
    .burger{display:grid}
    .hero{padding-top:140px}
    .hero-stats{grid-template-columns:repeat(2,1fr)}
    .official-grid{grid-template-columns:1fr}
    .feature-grid{grid-template-columns:1fr}
    .tg-inner{flex-direction:column;text-align:center;padding:44px 28px}
    .tg-copy p{margin:0 auto}
    .invite-inner{flex-direction:column;text-align:center;padding:44px 28px}
    .invite-copy p{margin:0 auto}
    .invite-actions{justify-content:center}
    .invite-num{width:120px;height:120px;font-size:58px;border-radius:28px}
    .invite-num::after{inset:-8px;border-radius:34px}
    .f-brand{grid-column:1/-1}
    .reg-inner{flex-direction:column;text-align:center}
    .crumb{padding-top:96px}
}
@media (max-width:560px){
    section{padding:70px 0}
    .constellation{display:none}
    .pricing-grid{grid-template-columns:1fr}
    .client-grid{grid-template-columns:1fr}
    .hero-stats{gap:10px}
    .hero-actions .btn,.page-hero-actions .btn{width:100%}
    .footer-main{grid-template-columns:1fr;gap:26px}
    details .ans{padding-left:24px}
    .o-item{padding:17px 16px;gap:13px}
    .orbit{display:none}
    .scene-grid,.related-grid{grid-template-columns:1fr}
    .reg-inner{padding:28px 22px}
}
@media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
    html{scroll-behavior:auto}
}