:root{--bg:#07090d;--panel:#10131b;--panel2:#141925;--line:#232a38;--text:#f3f5f8;--muted:#9aa3b5;--lime:#c7ff45;--lime2:#a8e22c;--orange:#d97757;--radius:20px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,video{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.lime{color:var(--lime)}.muted{color:var(--muted)}
/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(7,9,13,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav .wrap{display:flex;align-items:center;height:68px;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:1px;white-space:nowrap}
.brand img{width:34px;height:34px;border-radius:9px}
.nav nav{display:flex;gap:26px;margin-left:auto;font-size:15px;color:#c9cfdb}
.nav nav a:hover,.nav nav a.on{color:var(--lime)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:999px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.2s}
.btn-lime{background:var(--lime);color:#0b0d12}.btn-lime:hover{background:#d6ff6e;transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:#dfe4ec}.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.nav .btn{padding:9px 18px;font-size:14px}
@media(max-width:860px){.nav nav{display:none}.nav .btn{margin-left:auto;white-space:nowrap}}
@media(max-width:420px){.nav .wrap{gap:12px;padding:0 16px}.brand{font-size:17px}.brand img{width:30px;height:30px}.nav .btn{padding:8px 12px;font-size:13px}}
/* hero */
.hero{position:relative;overflow:hidden;padding:84px 0 70px}
.hero:before{content:"";position:absolute;left:-200px;top:-120px;width:640px;height:640px;border-radius:50%;background:var(--lime);filter:blur(150px);opacity:.16}
.hero:after{content:"";position:absolute;right:-220px;bottom:-200px;width:640px;height:640px;border-radius:50%;background:var(--orange);filter:blur(150px);opacity:.14}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.tag{display:inline-block;padding:6px 14px;border-radius:999px;background:rgba(199,255,69,.1);border:1px solid rgba(199,255,69,.25);color:var(--lime);font-size:13px;font-weight:600}
.hero h1{font-size:56px;line-height:1.15;margin:20px 0 18px;font-weight:900;letter-spacing:1px}
.hero p.lead{font-size:18px;color:#c3cad6;max-width:540px}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.gift{display:inline-flex;align-items:center;gap:10px;margin-top:22px;padding:10px 18px;border-radius:14px;border:1px solid rgba(217,119,87,.45);background:rgba(217,119,87,.1);font-weight:700}
.gift b{color:var(--lime);font-size:20px}
.phone{justify-self:center;width:300px;border-radius:44px;padding:12px;background:#1a1e27;box-shadow:0 0 0 2px #2c3240,0 30px 90px rgba(0,0,0,.6),0 0 70px rgba(199,255,69,.08)}
.phone video{border-radius:34px;width:100%;aspect-ratio:9/16;object-fit:cover;background:#000}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}.hero h1{font-size:40px}.hero{padding:56px 0}}
/* sections */
section{padding:84px 0}
.sec-h{text-align:center;margin-bottom:46px}
.sec-h h2{font-size:36px;font-weight:900;letter-spacing:1px}
.sec-h p{color:var(--muted);margin-top:10px;font-size:16px}
.alt{background:linear-gradient(180deg,#0a0d13,#07090d)}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.g3,.g4,.g2{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.ico{width:46px;height:46px;border-radius:13px;background:rgba(199,255,69,.1);color:var(--lime);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.step{position:relative}
.step .n{font-size:44px;font-weight:900;color:var(--lime);line-height:1;margin-bottom:12px;opacity:.9}
/* compare */
.compare{position:relative;max-width:820px;margin:0 auto;border-radius:22px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;user-select:none;touch-action:none}
.compare svg{position:absolute;inset:0;width:100%;height:100%}
.compare .before{position:absolute;inset:0;clip-path:inset(0 50% 0 0)}
.compare .sub{position:absolute;left:0;right:0;bottom:7%;text-align:center;font-size:clamp(16px,3.4vw,32px);font-weight:900;color:#fff;-webkit-text-stroke:5px #000;paint-order:stroke fill;letter-spacing:2px}
.compare .bar{position:absolute;top:0;bottom:0;left:50%;width:4px;margin-left:-2px;background:var(--lime);box-shadow:0 0 16px var(--lime);cursor:ew-resize}
.compare .bar i{position:absolute;top:50%;left:50%;width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:var(--lime);color:#0b0d12;font-style:normal;font-weight:900;display:flex;align-items:center;justify-content:center}
.compare .lb{position:absolute;top:14px;padding:4px 12px;border-radius:8px;font-size:13px;font-weight:700}
.compare .lb.l{left:14px;background:rgba(0,0,0,.6)}.compare .lb.r{right:14px;background:var(--lime);color:#0b0d12}
/* pricing */
.price{text-align:center}
.price .v{font-size:46px;font-weight:900;color:var(--lime);line-height:1.2}
.price .v small{font-size:16px;color:var(--muted);font-weight:500}
.price.hot{border-color:rgba(199,255,69,.5);box-shadow:0 0 50px rgba(199,255,69,.08)}
.price ul{list-style:none;margin-top:16px;color:#c3cad6;font-size:14px;text-align:left}
.price li{padding:6px 0;border-top:1px dashed var(--line)}
.note{margin-top:22px;text-align:center;color:var(--muted);font-size:14px}
/* table */
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left}
th{color:var(--muted);font-weight:600}
/* faq */
.faq{max-width:860px;margin:0 auto}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:16px;margin-bottom:12px;overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:20px 24px;font-weight:700;font-size:16px;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--lime);font-size:22px;line-height:1}
.faq details[open] summary:after{content:"−"}
.faq details p{padding:0 24px 20px;color:#c3cad6;font-size:15px}
/* cta band */
.band{border-radius:28px;padding:56px 40px;text-align:center;background:radial-gradient(700px 300px at 50% 0%,rgba(199,255,69,.16),transparent 70%),var(--panel);border:1px solid var(--line)}
.band h2{font-size:34px;font-weight:900}
.band p{color:var(--muted);margin:10px 0 26px}
.band-act{display:flex;align-items:center;justify-content:center;gap:48px 48px;flex-wrap:wrap;margin-bottom:30px}
.qr{position:relative;display:inline-flex;color:var(--muted);font-size:13px}
.qr span{position:absolute;left:50%;top:100%;transform:translateX(-50%);margin-top:8px;white-space:nowrap}
.qr img{width:150px;height:150px;border-radius:16px;background:#fff;padding:8px}
/* article */
.article{max-width:820px;margin:0 auto}
.article h1{font-size:40px;line-height:1.3;font-weight:900;margin-bottom:14px}
.article h2{font-size:26px;margin:44px 0 14px}
.article h3{font-size:19px;margin:26px 0 10px}
.article p,.article li{color:#c9cfdb;font-size:16px}
.article p{margin:12px 0}
.article ol,.article ul{padding-left:22px;margin:12px 0}
.article li{margin:8px 0}
.article .tip{margin:20px 0;padding:16px 20px;border-left:4px solid var(--lime);background:var(--panel);border-radius:0 14px 14px 0;color:#c9cfdb}
.crumb{font-size:14px;color:var(--muted);margin-bottom:18px}
.crumb a:hover{color:var(--lime)}
.page-hero{padding:64px 0 10px}
/* footer */
footer{border-top:1px solid var(--line);padding:46px 0 30px;margin-top:40px;color:var(--muted);font-size:14px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
footer h4{color:var(--text);font-size:15px;margin-bottom:12px}
footer a{display:block;padding:3px 0}footer a:hover{color:var(--lime)}
footer .bottom{margin-top:34px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;font-size:13px}
@media(max-width:860px){footer .cols{grid-template-columns:1fr 1fr}}