:root{--abyss:#020c15;--deep:#051827;--panel:#0a2536;--teal:#4ddbc9;--aqua:#79f0e4;--amber:#efa85a;--white:#e8f7f5;--muted:#7899a2;--line:#164255}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--white);background:var(--abyss);font-family:"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.72}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.wrap{width:min(1220px,calc(100% - 46px));margin:auto}.skip{position:fixed;z-index:99;top:6px;left:6px;padding:8px 13px;color:#021016;background:var(--teal);transform:translateY(-150%)}.skip:focus{transform:none}
.header{position:sticky;z-index:50;top:0;background:rgba(2,12,21,.93);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav{min-height:76px;display:flex;align-items:center;gap:29px}.brand{display:flex;align-items:center;gap:11px;font-weight:900}.sonar{width:40px;height:40px;display:grid;place-items:center;color:var(--teal);border:1px solid var(--teal);border-radius:50%;box-shadow:inset 0 0 0 6px rgba(77,219,201,.08)}.links{margin-left:auto;display:flex;gap:25px;color:#8aa8ae;font-size:11px}.links a:hover,.links a[aria-current=page]{color:var(--teal)}.lang{color:#587984;font:10px Consolas,monospace}.btn{display:inline-flex;min-height:43px;align-items:center;justify-content:center;padding:9px 18px;color:var(--teal);background:transparent;border:1px solid #27706f;border-radius:4px;font:700 11px Consolas,monospace;white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb}.btn:hover{color:#021016;background:var(--teal)}.btn-main{color:#021016;background:var(--teal);border-color:var(--teal)}.menu{display:none;margin-left:auto;width:43px;height:43px;color:var(--teal);background:none;border:1px solid var(--line)}
.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 72% 50%,rgba(22,122,133,.22),transparent 29%),linear-gradient(180deg,#020b13,#031726)}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(77,219,201,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(77,219,201,.035) 1px,transparent 1px);background-size:60px 60px;mask-image:linear-gradient(to bottom,#000,transparent)}.hero-grid{position:relative;min-height:790px;display:grid;grid-template-columns:1fr 540px;align-items:center;gap:55px;padding:75px 0}.eyebrow{color:var(--teal);font:10px Consolas,monospace;letter-spacing:.16em}.hero h1,.page-hero h1{margin:21px 0;font-size:clamp(52px,7vw,88px);line-height:.99;letter-spacing:-.065em}.hero h1 span{display:block;color:var(--teal)}.lead{max-width:640px;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}.porthole{position:relative;width:520px;height:520px;display:grid;place-items:center;border:19px solid #0b2936;border-radius:50%;box-shadow:0 0 0 1px #2c5261,0 0 0 34px rgba(6,38,52,.55),inset 0 0 90px #000}.porthole:before,.porthole:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(77,219,201,.26)}.porthole:before{inset:8%}.porthole:after{inset:22%;border-style:dashed}.porthole img{width:72%;height:72%;object-fit:contain;filter:drop-shadow(0 18px 30px rgba(0,0,0,.5))}.sweep{position:absolute;width:44%;height:1px;left:50%;top:50%;background:linear-gradient(90deg,var(--teal),transparent);transform-origin:left;transform:rotate(-33deg);box-shadow:0 0 10px var(--teal)}.depth{position:absolute;padding:8px 12px;color:#83a5aa;background:rgba(1,13,21,.88);border:1px solid var(--line);font:9px Consolas,monospace}.d1{top:10%;left:-8%}.d2{right:-8%;bottom:15%}.depth b{display:block;color:var(--amber);font-size:13px}
.trust{display:grid;grid-template-columns:repeat(3,1fr);border-block:1px solid var(--line);background:#04131f}.trust span{padding:19px;text-align:center;color:#8ca6ab;font-size:11px}.trust span+span{border-left:1px solid var(--line)}.trust b{color:var(--teal);margin-right:7px}.section{padding:110px 0}.section-panel{background:var(--deep)}.section-surface{color:#173944;background:#e7f3f2}.head{display:grid;grid-template-columns:190px 1fr;gap:55px;margin-bottom:55px}.head h2{margin:0;max-width:820px;font-size:clamp(36px,5vw,58px);line-height:1.08;letter-spacing:-.045em}.head p{grid-column:2;margin:0;max-width:680px;color:var(--muted)}.section-surface .head p{color:#5f7e84}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.metric{padding:28px;background:#082130}.metric+.metric{border-left:1px solid var(--line)}.metric strong{display:block;color:var(--teal);font:700 34px Consolas,monospace}.metric span{color:#7f9aa1;font-size:10px}.fine{margin-top:10px;color:#537781;font-size:9px;text-align:right}
.mac-focus{display:grid;grid-template-columns:420px 1fr;min-height:540px;border:1px solid #b7d1d1;background:#fff}.mac-media{padding:35px;background:linear-gradient(145deg,#d2ebea,#b9dfde)}.mac-media img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 25px 30px rgba(19,85,90,.18))}.mac-copy{padding:60px;display:flex;flex-direction:column;justify-content:center}.mac-copy code{color:#267779;font-size:10px}.mac-copy h3{margin:18px 0;font-size:38px}.mac-copy p{color:#5e7c82}.compat{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:23px 0}.compat span{padding:11px;background:#edf7f6;border:1px solid #d0e5e3;font-size:11px}
.systems{display:grid;grid-template-columns:repeat(3,1fr);gap:11px}.system{padding:29px;background:#fff;border:1px solid #bdd4d4}.system-icon{width:50px;height:50px;display:grid;place-items:center;color:#fff;background:#267f7c;border-radius:50%}.system h3{margin:55px 0 10px;font-size:24px}.system p{color:#617f84;font-size:12px}
.depth-map{display:grid;grid-template-columns:1fr 390px;gap:15px}.map{height:500px;border:1px solid var(--line);background:radial-gradient(circle,#0b5660,#031b2a)}.map img{width:100%;height:100%;object-fit:contain;opacity:.55;filter:hue-rotate(140deg) saturate(.75)}.nodes{display:grid;gap:7px}.node{display:grid;grid-template-columns:1fr 85px 70px;align-items:center;padding:19px;background:#082436;border:1px solid var(--line)}.node small{color:#7898a0;font:9px Consolas,monospace}.node b{color:var(--teal);font:10px Consolas,monospace;text-align:right}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:11px}.review{padding:27px;background:#fff;border:1px solid #bdd4d4}.review img{width:100%;height:130px;object-fit:cover;filter:grayscale(.8) hue-rotate(120deg)}.stars{margin-top:19px;color:#267f7c;letter-spacing:3px}.review blockquote{margin:15px 0;color:#47686d}.review footer{color:#829a9e;font-size:10px}
.plans{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}.plan{min-height:440px;padding:31px;display:flex;flex-direction:column;background:#07202f}.plan+.plan{border-left:1px solid var(--line)}.plan.best{background:linear-gradient(145deg,#0a5d64,#07394d)}.plan small{color:var(--teal)}.price{font:700 42px Consolas,monospace}.price span{color:#7e9ba2;font-size:10px}.plan ul{padding:0;list-style:none;color:#95adb2;font-size:12px}.plan li{padding:6px 0}.plan li:before{content:"○";color:var(--teal);margin-right:8px}.plan .btn{width:100%;margin-top:auto}
.faq{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.qa{padding:26px;background:#fff;border:1px solid #bdd4d4}.qa code{color:#267f7c;font-size:9px}.qa h3{margin:20px 0 8px}.qa p,.qa li{color:#617f84;font-size:12px}
.page-hero{padding:100px 0 70px;background:radial-gradient(circle at 80% 45%,rgba(22,122,133,.24),transparent 27%),var(--deep)}.page-grid{display:grid;grid-template-columns:1fr 410px;align-items:center;gap:70px}.page-hero h1{font-size:clamp(45px,6vw,72px)}.mini-porthole{height:390px;padding:24px;background:#082a39;border:16px solid #0e3643;border-radius:50%;box-shadow:0 0 0 1px #2f5964,inset 0 0 65px #000}.mini-porthole img{width:100%;height:100%;object-fit:contain}
.downloads{border:1px solid #b9d2d2}.download{display:grid;grid-template-columns:85px 1fr 220px;align-items:center;gap:28px;padding:24px;background:#fff}.download+.download{border-top:1px solid #c3d9d8}.download.primary{background:#f0fbf9}.os{width:57px;height:57px;display:grid;place-items:center;color:#fff;background:#267f7c;border-radius:50%;font-weight:900}.download h3{margin:0}.download p{margin:4px 0;color:#617e83;font-size:10px}.steps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.step{padding:27px;background:#082436}.step+.step{border-left:1px solid var(--line)}.step b{color:var(--teal);font:9px Consolas,monospace}.step h3{margin:38px 0 9px}.step p{color:#8da7ad;font-size:11px}
.guide{display:grid;grid-template-columns:270px 1fr;gap:70px}.guide-nav{position:sticky;top:98px;height:max-content;background:#fff;border:1px solid #bdd4d4}.guide-nav a{display:block;padding:11px 13px;color:#627e83;border-bottom:1px solid #d6e6e5;font-size:10px}.guide-nav a:hover{color:#fff;background:#267f7c}.guide-body h2{margin:55px 0 13px;font-size:31px}.guide-body h2:first-child{margin-top:0}.guide-body p,.guide-body li{color:#617e83}.notice{padding:22px;background:#fff;border:1px solid #bdd4d4;border-left:5px solid #267f7c}
.cta{margin-top:75px;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:30px;background:#082b3d;border:1px solid var(--teal)}.cta h2{margin:0}.cta p{margin:4px 0;color:#95b1b6}.footer{padding:55px 0 22px;background:#010810;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:45px}.footer p{max-width:340px;color:#5d7b83;font-size:10px}.footer h3{color:var(--teal);font:10px Consolas,monospace}.footer-links{display:grid;gap:8px;color:#79949b;font-size:10px}.copy{display:flex;justify-content:space-between;margin-top:42px;padding-top:17px;border-top:1px solid var(--line);color:#4e6c75;font-size:9px}
@media(max-width:930px){.links{position:absolute;top:76px;right:24px;left:24px;display:none;padding:17px;background:#051827;border:1px solid var(--line);flex-direction:column}.links.open{display:flex}.menu{display:block}.lang,.nav>.btn{display:none}.hero-grid,.head,.page-grid,.mac-focus,.depth-map{grid-template-columns:1fr}.head{gap:16px}.head p{grid-column:1}.porthole{width:470px;height:470px;margin:auto}.systems,.reviews{grid-template-columns:1fr}.guide{grid-template-columns:1fr}.guide-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.wrap{width:calc(100% - 28px)}.hero-grid{min-height:auto;padding:65px 0}.hero h1{font-size:49px}.porthole{width:320px;height:320px;border-width:12px}.trust,.metrics,.plans,.faq,.steps{grid-template-columns:1fr}.trust span+span,.metric+.metric,.plan+.plan,.step+.step{border-left:0;border-top:1px solid var(--line)}.section{padding:75px 0}.mac-copy{padding:35px}.download{grid-template-columns:60px 1fr}.download .btn{grid-column:1/-1}.cta,.copy{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}