:root{
  --bg:#070914;--bg2:#0d1022;--card:rgba(255,255,255,.04);--border:rgba(255,255,255,.09);
  --text:#e8eaf3;--muted:#9aa1bd;--accent:#ff3b47;--accent2:#5a8bff;--accent3:#2ee6c5;
  --radius:18px;--shadow:0 20px 60px rgba(0,0,0,.45);--max:1180px;
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 22px}
h1,h2,h3,h4{line-height:1.2;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5vw,3.8rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.5rem)}
h3{font-size:1.25rem}
p{color:var(--muted)}
.lead{font-size:1.15rem}
.grad{background:linear-gradient(90deg,#fff,#ffb3b8 40%,#8fb0ff);-webkit-background-clip:text;background-clip:text;color:transparent}

/* background orbs */
.orbs{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.45;animation:float 18s ease-in-out infinite}
.orb.a{width:520px;height:520px;background:#ff3b47;top:-150px;right:-120px}
.orb.b{width:460px;height:460px;background:#3b6cff;bottom:-120px;left:-120px;animation-delay:-6s}
.orb.c{width:320px;height:320px;background:#2ee6c5;top:45%;left:55%;opacity:.22;animation-delay:-12s}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-40px,50px) scale(1.12)}}
.gridbg{position:fixed;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse at 50% 0%,#000 30%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 30%,transparent 80%)}

/* header */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px);background:rgba(7,9,20,.7);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;white-space:nowrap}
.logo .hex{width:34px;height:34px;background:linear-gradient(135deg,var(--accent),#ff7a5c);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);display:grid;place-items:center;font-size:.9rem;color:#fff;transition:transform .5s}
.logo:hover .hex{transform:rotateY(180deg)}
.menu{display:flex;gap:26px;align-items:center}
.menu a{color:var(--muted);font-weight:500;font-size:.95rem;position:relative;transition:color .2s}
.menu a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--accent);transition:width .25s}
.menu a:hover,.menu a.active{color:#fff}
.menu a:hover::after,.menu a.active::after{width:100%}
.lang{position:relative}
.lang-btn{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 12px 0 10px;border-radius:999px;background:var(--card);border:1px solid var(--border);color:#fff;font:inherit;font-size:.85rem;font-weight:600;cursor:pointer;transition:background .2s,border-color .2s}
.lang-btn:hover,.lang.open .lang-btn{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.2)}
.lang-btn svg{transition:transform .25s;opacity:.7}
.lang.open .lang-btn svg{transform:rotate(180deg)}
.fl{width:18px;height:18px;flex:none;border-radius:50%;box-shadow:0 0 0 1px rgba(255,255,255,.15)}
.lang-menu{position:absolute;top:calc(100% + 8px);right:0;min-width:190px;background:rgba(13,16,34,.97);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:14px;padding:6px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(-6px) scale(.98);transition:opacity .2s,transform .2s,visibility .2s;z-index:60}
.lang.open .lang-menu{opacity:1;visibility:visible;transform:none}
.lang-menu a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:9px;font-size:.9rem;font-weight:500;color:var(--text);white-space:nowrap}
.lang-menu a:hover{background:rgba(255,255,255,.07)}
.lang-menu a.on{color:#fff;background:rgba(255,59,71,.18)}
.lang-menu a.on::after{content:"✓";margin-left:auto;color:var(--accent)}
.burger{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:12px;background:var(--card);cursor:pointer;flex-direction:column;gap:5px;align-items:center;justify-content:center}
.burger span{width:20px;height:2px;background:#fff;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:14px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;font-size:1rem;font-family:inherit}
.btn.primary{background:linear-gradient(135deg,var(--accent),#ff6a4d);color:#fff;box-shadow:0 10px 30px rgba(255,59,71,.35)}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(255,59,71,.45)}
.btn.ghost{background:var(--card);border-color:var(--border);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-3px)}

/* hero */
.hero{position:relative;padding:90px 0 70px;perspective:1200px}
.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.hero .badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,59,71,.12);border:1px solid rgba(255,59,71,.3);color:#ffb3b8;font-size:.85rem;font-weight:600;margin-bottom:22px}
.hero .badge i{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(255,59,71,.7);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,59,71,.7)}100%{box-shadow:0 0 0 12px rgba(255,59,71,0)}}
.hero p.lead{margin:22px 0 32px;max-width:560px}
.actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{position:relative;transform-style:preserve-3d}
.hero-visual img{border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--border);transform:rotateY(-12deg) rotateX(6deg);transition:transform .6s cubic-bezier(.2,.8,.2,1)}
.hero-visual:hover img{transform:rotateY(-4deg) rotateX(2deg) scale(1.02)}
.hero-visual .chip{position:absolute;background:rgba(13,16,34,.85);backdrop-filter:blur(10px);border:1px solid var(--border);border-radius:14px;padding:12px 16px;font-size:.85rem;box-shadow:var(--shadow);animation:bob 5s ease-in-out infinite}
.hero-visual .chip b{display:block;font-size:1.05rem}
.hero-visual .chip.one{top:10%;left:-4%}
.hero-visual .chip.two{bottom:10%;right:2%;animation-delay:-2.5s}
.hero-visual .chip .ok{color:var(--accent3)}
.hero-visual .chip .bad{color:var(--accent)}
@keyframes bob{0%,100%{transform:translateY(0) translateZ(40px)}50%{transform:translateY(-14px) translateZ(40px)}}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:60px;grid-column:1/-1}
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center}
.stat b{font-size:2rem;display:block;background:linear-gradient(90deg,var(--accent2),var(--accent3));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--muted);font-size:.9rem}

section{padding:70px 0}
.section-head{max-width:700px;margin-bottom:44px}
.section-head p{margin-top:12px}
.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;margin-bottom:12px;display:block}

/* cards */
.grid{display:grid;gap:22px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;position:relative;transition:transform .35s cubic-bezier(.2,.8,.2,1),border-color .3s,box-shadow .3s;will-change:transform}
.card:hover{transform:translateY(-8px)}
.card:hover{border-color:rgba(255,255,255,.2);box-shadow:var(--shadow)}
.card .shine{position:absolute;inset:0;border-radius:inherit;background:radial-gradient(600px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.08),transparent 40%);opacity:0;transition:opacity .3s;pointer-events:none}
.card:hover .shine{opacity:1}
.card h3{margin:14px 0 8px}
.card p{font-size:.95rem}
.icon3d{width:84px;height:84px;overflow:hidden;border-radius:18px;display:grid;place-items:center;font-size:1.6rem;background:linear-gradient(135deg,rgba(255,255,255,.14),rgba(255,255,255,.02));border:1px solid var(--border);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 10px 30px rgba(0,0,0,.4)}
.icon3d img{width:100%;height:100%;border-radius:18px;object-fit:cover}

/* service cards */
.svc{display:flex;flex-direction:column;gap:14px}
.svc .top{display:flex;align-items:center;gap:16px}
.svc .shot{display:block;margin:-26px -26px 0;border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;aspect-ratio:16/9;border-bottom:1px solid var(--border)}
.svc .shot img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .6s cubic-bezier(.2,.8,.2,1)}
.svc:hover .shot img{transform:scale(1.05)}
.svc-shot{width:100%;height:auto;border-radius:22px;border:1px solid var(--border);box-shadow:var(--shadow);margin-bottom:26px}
.svc .top h3{margin:0}
.svc .tag{font-size:.75rem;color:var(--muted)}
.rating{display:flex;gap:2px;color:#ffc857;font-size:.9rem}
.badges{display:flex;flex-wrap:wrap;gap:6px}
.badges span{font-size:.72rem;padding:4px 10px;border-radius:999px;border:1px solid var(--border);background:rgba(255,255,255,.03);color:var(--muted)}
.badges span.v{border-color:rgba(46,230,197,.4);color:var(--accent3)}
.svc .more{margin-top:auto;color:var(--accent2);font-weight:600;font-size:.9rem}
.svc .more:hover{text-decoration:underline}

/* article cards */
.art{padding:0;overflow:hidden;display:flex;flex-direction:column}
.art img{aspect-ratio:16/9;object-fit:cover;transition:transform .6s}
.art:hover img{transform:scale(1.06)}
.art .body{padding:22px}
.art .meta{font-size:.78rem;color:var(--muted);display:flex;gap:10px;margin-bottom:8px}
.art h3{margin:0 0 8px;font-size:1.1rem}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{position:relative;padding:70px 24px 24px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius)}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-size:2.6rem;font-weight:900;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.3);position:absolute;top:12px;left:22px;line-height:1}
.step h3{font-size:1.05rem;margin-bottom:8px}

/* cta */
.cta{position:relative;overflow:hidden;border-radius:28px;padding:60px 40px;text-align:center;background:linear-gradient(135deg,rgba(255,59,71,.25),rgba(90,139,255,.2));border:1px solid var(--border)}
.cta::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:var(--accent);filter:blur(120px);opacity:.35;top:-200px;right:-100px;animation:float 14s ease-in-out infinite}
.cta h2{position:relative}
.cta p{position:relative;margin:14px auto 28px;max-width:600px}
.cta .btn{position:relative}

/* page header */
.page-head{padding:70px 0 30px}
.page-head p{max-width:720px;margin-top:14px}
.breadcrumbs{font-size:.85rem;color:var(--muted);margin-bottom:16px}
.breadcrumbs a:hover{color:#fff}

/* article */
.article{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:50px;padding-top:40px;padding-bottom:80px}
.article .content{font-size:1.05rem}
.article .content>img{border-radius:22px;margin-bottom:30px;box-shadow:var(--shadow)}
.article .content h2{margin:40px 0 14px;font-size:1.7rem}
.article .content h3{margin:28px 0 10px}
.article .content p,.article .content li{color:#c5cadb;margin-bottom:14px}
.article .content ul,.article .content ol{padding-left:22px;margin-bottom:16px}
.article .content code{background:rgba(255,255,255,.08);padding:2px 7px;border-radius:6px;font-size:.9em;word-break:break-all}
.article .content blockquote{border-left:3px solid var(--accent);padding:12px 20px;background:var(--card);border-radius:0 14px 14px 0;margin:20px 0}
.article .content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.95rem}
.article .content th,.article .content td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.article .content th{background:rgba(255,255,255,.05)}
.aside .box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin-bottom:22px;position:sticky;top:90px}
.aside .box h4{margin-bottom:12px}
.aside .box a{display:block;padding:8px 0;border-bottom:1px solid var(--border);color:var(--muted);font-size:.92rem}
.aside .box a:hover{color:#fff}
.aside .box a:last-child{border:0}

/* service detail */
.svc-hero{padding-top:50px;padding-bottom:30px}
.kv{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:30px 0}
.kv div{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px}
.kv small{color:var(--muted);display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}
.kv b{font-size:1.1rem}
.pros{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:30px 0}
.pros ul{list-style:none}
.pros li{padding:8px 0 8px 28px;position:relative;color:#c5cadb}
.pros li::before{position:absolute;left:0;top:8px}
.pros .p li::before{content:"✔";color:var(--accent3)}
.pros .c li::before{content:"✖";color:var(--accent)}

/* tool */
.tool{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:36px;max-width:820px;margin:0 auto}
.tool label{display:block;font-weight:600;margin-bottom:8px}
.tool input{width:100%;padding:16px 18px;border-radius:14px;border:1px solid var(--border);background:rgba(0,0,0,.35);color:#fff;font-size:1rem;font-family:ui-monospace,monospace;outline:none;transition:border-color .2s}
.tool input:focus{border-color:var(--accent2)}
.tool .row{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.result{margin-top:22px;padding:18px 22px;border-radius:14px;border:1px solid var(--border);display:none}
.result.ok{display:block;border-color:rgba(46,230,197,.5);background:rgba(46,230,197,.08)}
.result.bad{display:block;border-color:rgba(255,59,71,.5);background:rgba(255,59,71,.08)}
.result.warn{display:block;border-color:rgba(255,200,87,.5);background:rgba(255,200,87,.08)}
.result b{display:block;margin-bottom:6px}
.result .links{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.result .links a{font-size:.85rem;padding:6px 12px;border-radius:8px;background:rgba(255,255,255,.08)}

/* faq */
details{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px 22px;margin-bottom:12px}
summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center}
summary::after{content:"+";font-size:1.4rem;color:var(--accent);transition:transform .3s}
details[open] summary::after{transform:rotate(45deg)}
details p{margin-top:12px}

/* footer */
footer{border-top:1px solid var(--border);padding:50px 0 30px;margin-top:40px;background:rgba(0,0,0,.25)}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.fgrid h4{margin-bottom:14px;font-size:.95rem}
.fgrid a{display:block;color:var(--muted);font-size:.9rem;padding:4px 0}
.fgrid a:hover{color:#fff}
.copy{margin-top:36px;padding-top:20px;border-top:1px solid var(--border);font-size:.8rem;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.disclaimer{font-size:.8rem;color:#6d7490;margin-top:10px}

/* reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}

/* marquee */
.marquee{overflow:hidden;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:14px 0;background:rgba(255,255,255,.02)}
.marquee .track{display:flex;gap:40px;width:max-content;animation:scroll 40s linear infinite}
.marquee span{color:var(--muted);font-size:.9rem;white-space:nowrap}
.marquee span::before{content:"◆";color:var(--accent);margin-right:10px;font-size:.6rem}
@keyframes scroll{to{transform:translateX(-50%)}}

/* responsive */
@media (max-width:1000px){
  .hero .container{grid-template-columns:1fr}
  .hero-visual{margin-top:30px}
  .grid.c3,.grid.c4,.steps{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .article{grid-template-columns:1fr}
  .aside .box{position:static}
  .fgrid{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .menu{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:rgba(7,9,20,.97);padding:20px 22px 26px;border-bottom:1px solid var(--border);gap:18px}
  .menu.show{display:flex}
  .burger{display:flex}
  .logo{font-size:1rem;gap:8px}.logo .hex{width:30px;height:30px}
  .lang-btn{height:36px;padding:0 10px 0 8px;font-size:.8rem}
  .hero{padding:50px 0 40px}
  .grid.c2,.grid.c3,.grid.c4,.steps,.pros,.kv{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .hero-visual .chip.one{left:0}
  .hero-visual .chip.two{right:0}
  .hero-visual img{transform:none}
  .cta{padding:40px 22px}
  .tool{padding:22px}
  .fgrid{grid-template-columns:1fr}
  .lang a{padding:4px 8px}
}