:root{--bg: #05070c;--surface: #0b101a;--surface-2: #0f1622;--border: rgba(148, 163, 184, .16);--border-strong: rgba(148, 163, 184, .28);--text: #e8eef7;--text-soft: #c3cede;--muted: #8b9bb0;--accent: #38bdf8;--accent-2: #6366f1;--accent-3: #a78bfa;--ok: #34d399;--warn: #fbbf24;--danger: #fb7185;--grad: linear-gradient(100deg, #7dd3fc 0%, #a5b4fc 55%, #818cf8 100%);--radius: 18px;--nav-h: 68px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;--mono: ui-monospace, SFMono-Regular, "Cascadia Code", Menlo, Consolas, monospace}*{box-sizing:border-box;margin:0}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}::selection{background:#6366f173;color:#fff}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}a{color:inherit}img{max-width:100%;display:block}h1,h2,h3,h4{line-height:1.25;letter-spacing:-.02em}p{margin:0}.container{width:min(1140px,100% - 48px);margin-inline:auto}.container--narrow{width:min(820px,100% - 48px)}.section{padding:96px 0;scroll-margin-top:calc(var(--nav-h) - 8px)}.section--alt{background:linear-gradient(180deg,#ffffff04,#ffffff02);border-block:1px solid rgba(148,163,184,.07)}.sec-head{max-width:780px;margin:0 auto 54px;text-align:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1px solid rgba(56,189,248,.28);border-radius:999px;background:linear-gradient(120deg,#38bdf81a,#6366f11f);color:#a5d8f5;font-size:13px;font-weight:600;letter-spacing:.08em}.eyebrow:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}.h2{margin-top:18px;font-size:clamp(28px,4.4vw,42px);font-weight:800}.lead{margin-top:16px;color:var(--muted);font-size:clamp(15px,1.6vw,17px)}.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.skip{position:fixed;top:10px;left:10px;z-index:200;padding:8px 14px;border-radius:10px;background:var(--surface-2);border:1px solid var(--border-strong);color:var(--text);font-size:13px;transform:translateY(-140%);transition:transform .2s ease}.skip:focus{transform:none}.bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-2;overflow:hidden;pointer-events:none}.bg__orb{position:absolute;width:60vw;height:60vw;max-width:880px;max-height:880px;border-radius:50%;filter:blur(90px);opacity:.5}.bg__orb--a{top:-30%;left:-12%;background:radial-gradient(circle,rgba(56,189,248,.22),transparent 62%);animation:drift-a 22s ease-in-out infinite alternate}.bg__orb--b{top:8%;right:-18%;background:radial-gradient(circle,rgba(99,102,241,.24),transparent 62%);animation:drift-b 26s ease-in-out infinite alternate}.bg__grid{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(148,163,184,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.055) 1px,transparent 1px);background-size:52px 52px;-webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 20%,transparent 78%);mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 20%,transparent 78%)}.nav{position:sticky;top:0;z-index:100;height:var(--nav-h);backdrop-filter:blur(16px) saturate(1.4);-webkit-backdrop-filter:blur(16px) saturate(1.4);background:#05070cb8;border-bottom:1px solid rgba(148,163,184,.1)}.nav__inner{height:100%;display:flex;align-items:center;gap:24px}.nav__brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:16px;letter-spacing:-.01em}.nav__logo{border-radius:9px;box-shadow:0 0 0 1px #ffffff14,0 4px 18px #38bdf840}.nav__links{display:flex;align-items:center;gap:4px;margin-left:auto}.nav__link{position:relative;padding:8px 13px;border-radius:10px;color:var(--text-soft);font-size:14px;text-decoration:none;transition:color .18s ease,background .18s ease}.nav__link:hover{color:var(--text);background:#ffffff0d}.nav__actions{display:flex;align-items:center;gap:10px;margin-left:12px}.lang-toggle{padding:7px 14px;border-radius:999px;border:1px solid var(--border-strong);background:#ffffff0a;color:var(--text-soft);font:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:border-color .2s ease,color .2s ease,box-shadow .2s ease}.lang-toggle:hover{color:var(--text);border-color:var(--accent);box-shadow:0 0 16px #38bdf840}.nav__github{display:inline-flex;align-items:center;gap:7px;padding:8px 15px;border-radius:11px;background:linear-gradient(120deg,#38bdf829,#6366f12e);border:1px solid rgba(129,140,248,.4);color:var(--text);font-size:14px;font-weight:600;text-decoration:none;transition:transform .18s ease,box-shadow .2s ease}.nav__github:hover{transform:translateY(-1px);box-shadow:0 8px 24px #6366f14d}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 26px;border-radius:14px;font:inherit;font-size:16px;font-weight:700;text-decoration:none;transition:transform .18s ease,box-shadow .22s ease,border-color .2s ease}.btn--primary{color:#fff;background:linear-gradient(120deg,#0ea5e9,#6366f1);box-shadow:0 10px 34px #4f46e56b,inset 0 1px #ffffff47}.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px #4f46e58c,inset 0 1px #ffffff47}.btn--ghost{color:var(--text-soft);border:1px solid var(--border-strong);background:#ffffff08}.btn--ghost:hover{color:var(--text);border-color:#818cf899;transform:translateY(-2px)}.hero{position:relative;padding:clamp(48px,7vw,104px) 0 clamp(110px,12vw,168px);scroll-margin-top:0}.hero__inner{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(360px,.96fr);align-items:center;gap:clamp(40px,5vw,72px)}.hero__badge{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;border:1px solid rgba(56,189,248,.32);background:linear-gradient(120deg,#38bdf81a,#6366f124);color:#bcdcf3;font-size:13px;font-weight:600}.hero__badge:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 12px var(--ok)}.hero__title{margin-top:24px;font-size:clamp(36px,5.6vw,62px);font-weight:900;letter-spacing:-.035em}.hero__sub{max-width:56ch;margin-top:22px;color:var(--muted);font-size:clamp(15.5px,1.8vw,18px)}.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}.hero__note{display:inline-flex;align-items:center;gap:9px;margin-top:26px;color:var(--muted);font-size:13.5px}.hero__note-dot{width:7px;height:7px;border-radius:50%;background:linear-gradient(120deg,var(--accent),var(--accent-2))}.hero__visual{position:relative;padding:6px 0 22px 10px}.window{position:relative;overflow:hidden;border-radius:16px;border:1px solid rgba(148,163,184,.22);background:linear-gradient(180deg,#0d1522,#0a0f1a);box-shadow:0 30px 90px #020617cc,0 0 0 1px #6366f11f,0 0 70px #38bdf821;transform:perspective(1400px) rotateY(-6deg) rotateX(2deg)}.window__bar{display:flex;align-items:center;height:42px;padding:0 16px;border-bottom:1px solid rgba(148,163,184,.14);background:#ffffff08}.window__dots{display:inline-flex;gap:7px}.window__dots i{width:11px;height:11px;border-radius:50%;display:block}.window__dots i:nth-child(1){background:#f87171}.window__dots i:nth-child(2){background:#fbbf24}.window__dots i:nth-child(3){background:#34d399}.window__title{margin-inline:auto;padding-right:42px;color:var(--muted);font-size:12px;font-family:var(--mono)}.window__body{padding:20px 22px 24px;min-height:250px}.window__line{display:flex;gap:10px;align-items:baseline;font-family:var(--mono);font-size:13px;color:#b9c7da;opacity:0;animation:line-in .5s ease forwards}.window__line--ok{margin-top:10px;color:var(--ok)}.window__prompt{color:var(--accent);font-weight:700;flex:none}.window__caret{width:9px;height:16px;margin-top:8px;background:var(--ok);animation:blink 1.1s steps(2,start) infinite}.window__sheen{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(115deg,transparent 32%,rgba(255,255,255,.06) 46%,transparent 60%);transform:translate(-110%);animation:sheen 5.6s ease-in-out 2.4s infinite;pointer-events:none}.hero__chips{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.chip{position:absolute;display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;border:1px solid rgba(148,163,184,.28);background:#0f1622e0;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);font-family:var(--mono);font-size:12px;color:#cfe6f7;box-shadow:0 10px 26px #0206178c}.chip--1{top:-16px;right:4%;animation:float-a 6.5s ease-in-out infinite}.chip--2{bottom:4%;right:-8px;animation:float-b 7.5s ease-in-out infinite}.chip--3{top:34%;left:-30px;animation:float-a 8.5s ease-in-out infinite}.hero__scroll{position:absolute;left:50%;bottom:26px;transform:translate(-50%);display:inline-flex;flex-direction:column;align-items:center;gap:10px;text-decoration:none;color:var(--muted)}.hero__scroll-text{font-size:12px;letter-spacing:.05em;white-space:nowrap}.hero__scroll-line{width:1px;height:42px;background:linear-gradient(180deg,var(--accent),transparent);animation:drip 2s ease-in-out infinite;transform-origin:top}.download__auto{display:inline-flex;align-items:center;gap:8px;margin:-18px auto 26px;padding:8px 16px;border:1px solid rgba(52,211,153,.35);border-radius:999px;background:#34d39912;color:var(--text-soft);font-size:14px}.download__auto-dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 12px var(--ok)}.download__auto strong{color:var(--ok);font-weight:700}.download__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.os-card{position:relative;display:flex;flex-direction:column;min-height:230px;padding:26px 24px 22px;border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(180deg,#ffffff0b,#ffffff03);text-decoration:none;transition:transform .2s ease,border-color .2s ease,box-shadow .25s ease;overflow:hidden}.os-card:hover{transform:translateY(-5px);border-color:#818cf88c;box-shadow:0 22px 52px #0206178c,0 0 0 1px #818cf833}.os-card--rec{border-color:#34d39980;box-shadow:0 0 0 1px #34d39947,0 22px 60px #064e3b47}.os-card__head{display:flex;align-items:center;gap:10px}.os-dot{width:12px;height:12px;border-radius:50%}.os-dot--windows{background:linear-gradient(135deg,#38bdf8,#0284c7);box-shadow:0 0 14px #38bdf8cc}.os-dot--macos{background:linear-gradient(135deg,#e5e7eb,#9ca3af);box-shadow:0 0 14px #e5e7eb99}.os-dot--linux{background:linear-gradient(135deg,#fbbf24,#f59e0b);box-shadow:0 0 14px #fbbf24b3}.os-card__name{font-size:19px;font-weight:800}.os-card__rec{margin-left:auto;padding:3px 10px;border-radius:999px;background:#34d39924;border:1px solid rgba(52,211,153,.4);color:var(--ok);font-size:11px;font-weight:700}.os-card__file{margin-top:20px;font-family:var(--mono);font-size:13px;color:var(--accent)}.os-card__desc{margin-top:8px;color:var(--muted);font-size:14px;flex:1}.os-card__cta{margin-top:18px;display:inline-flex;align-items:center;gap:6px;color:var(--text-soft);font-size:14px;font-weight:600;transition:color .2s ease,gap .2s ease}.os-card:hover .os-card__cta{color:#a5d8f5;gap:9px}.download__meta{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:28px;padding:16px 22px;border-radius:14px;border:1px dashed var(--border-strong);color:var(--muted);font-size:14px}.download__all{color:#a5d8f5;text-decoration:none;font-weight:600}.download__all:hover{text-decoration:underline}.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feat-card{height:100%;padding:26px 24px;border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(180deg,#ffffff0b,#ffffff03);transition:transform .2s ease,border-color .2s ease,box-shadow .25s ease}.feat-card:hover{transform:translateY(-5px);border-color:#818cf880;box-shadow:0 22px 52px #02061780,0 0 40px #6366f11a}.feat-card__icon{display:grid;place-items:center;width:50px;height:50px;margin-bottom:18px;border-radius:14px;color:#c7ddf5;background:linear-gradient(135deg,#38bdf82e,#6366f133);border:1px solid rgba(129,140,248,.32);box-shadow:inset 0 1px #ffffff1a}.feat-card__title{font-size:18px;font-weight:800}.feat-card__desc{margin-top:10px;color:var(--muted);font-size:14.5px}.flow-steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px;counter-reset:step}.flow-card{position:relative;display:flex;gap:18px;height:100%;padding:22px 22px 22px 18px;border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(180deg,#ffffff0a,#ffffff03);overflow:hidden;transition:border-color .2s ease,transform .2s ease}.flow-card:hover{border-color:#38bdf873;transform:translateY(-3px)}.flow-card__num{flex:none;display:grid;place-items:center;width:54px;height:54px;border-radius:14px;font-family:var(--mono);font-size:14px;font-weight:800;color:#bcdcf3;background:linear-gradient(135deg,#38bdf824,#6366f12e);border:1px solid rgba(129,140,248,.3)}.flow-card__title{font-size:17px;font-weight:800}.flow-card__desc{margin-top:7px;color:var(--muted);font-size:14px}.flow-note{display:flex;align-items:flex-start;gap:12px;margin-top:26px;padding:16px 22px;border-radius:14px;border:1px solid rgba(56,189,248,.25);background:#38bdf80d;color:var(--text-soft);font-size:14.5px}.flow-note__mark{flex:none;display:grid;place-items:center;width:22px;height:22px;margin-top:1px;border-radius:50%;background:#38bdf833;border:1px solid rgba(56,189,248,.45);color:#a5d8f5;font-weight:800;font-size:13px}.rule-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.rule-card{position:relative;height:100%;padding:24px 24px 20px;border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(180deg,#ffffff0b,#ffffff03);overflow:hidden;transition:transform .2s ease,border-color .2s ease}.rule-card:hover{transform:translateY(-4px);border-color:#fbbf2473}.rule-card__idx{position:absolute;top:-10px;right:6px;font-family:var(--mono);font-size:64px;font-weight:900;line-height:1;color:#94a3b81a}.rule-card__title{position:relative;font-size:17px;font-weight:800;color:#fde68a}.rule-card__desc{position:relative;margin-top:10px;color:var(--muted);font-size:14px}.split{margin-top:34px;border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(180deg,#ffffff08,#ffffff02);overflow:hidden}.split__head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:20px 26px;border-bottom:1px solid var(--border)}.split__head h3{font-size:18px;font-weight:800}.split__head p{color:var(--muted);font-size:13.5px;max-width:60ch}.split__cols{display:grid;grid-template-columns:1fr 1fr}.split__col{padding:24px 26px 28px}.split__col+.split__col{border-left:1px solid var(--border)}.split__col h4{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:800;letter-spacing:0}.split__col--shell h4{color:#7dd3fc}.split__col--dsh h4{color:#c4b5fd}.split__col h4:before{content:"";width:9px;height:9px;border-radius:3px;background:currentColor;box-shadow:0 0 12px currentColor}.split__col ul{list-style:none;padding:0;margin-top:14px;display:grid;gap:9px}.split__col li{position:relative;padding-left:22px;color:var(--text-soft);font-size:14px}.split__col li:before{content:"✓";position:absolute;left:0;top:0;color:var(--muted);font-size:12.5px;font-weight:800}.split__col--shell li:before{color:#7dd3fc}.split__col--dsh li:before{color:#c4b5fd}.disclaimer{margin-top:34px;padding:26px 28px;border-radius:var(--radius);border:1px solid rgba(251,113,133,.35);background:linear-gradient(120deg,#fb718512,#fbbf240d)}.disclaimer__text{color:var(--text-soft);font-size:14.5px}.disclaimer__links{display:flex;flex-wrap:wrap;gap:18px;margin-top:16px}.disclaimer__links a{color:#fecdd3;font-size:14px;font-weight:600;text-decoration:none}.disclaimer__links a:hover{text-decoration:underline}.limit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.limit-card{height:100%;padding:24px;border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(180deg,#ffffff09,#ffffff02);transition:transform .2s ease,border-color .2s ease}.limit-card:hover{transform:translateY(-4px);border-color:#fbbf2480}.limit-card__mark{display:grid;place-items:center;width:30px;height:30px;margin-bottom:16px;border-radius:10px;background:#fbbf241f;border:1px solid rgba(251,191,36,.4);color:#fde68a;font-weight:900;font-size:15px}.limit-card__title{font-size:17px;font-weight:800}.limit-card__desc{margin-top:9px;color:var(--muted);font-size:14px}.faq-list{display:grid;gap:12px}.faq-item{border:1px solid var(--border);border-radius:15px;background:linear-gradient(180deg,#ffffff09,#ffffff02);overflow:hidden;transition:border-color .2s ease}.faq-item[open]{border-color:#818cf873}.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;cursor:pointer;list-style:none;-webkit-user-select:none;user-select:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item__q{font-size:15.5px;font-weight:700;color:var(--text)}.faq-item__icon{position:relative;flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--border-strong);transition:transform .25s ease,border-color .2s ease}.faq-item__icon:before,.faq-item__icon:after{content:"";position:absolute;top:50%;left:50%;translate:-50% -50%;background:var(--muted)}.faq-item__icon:before{width:11px;height:1.5px}.faq-item__icon:after{width:1.5px;height:11px;transition:opacity .2s ease}.faq-item[open] .faq-item__icon{transform:rotate(135deg);border-color:var(--accent)}.faq-item__a{padding:0 22px 20px;color:var(--muted);font-size:14.5px}.footer{border-top:1px solid rgba(148,163,184,.1);background:linear-gradient(180deg,rgba(255,255,255,.012),transparent);padding:64px 0 30px}.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}.footer__brand img{border-radius:11px}.footer__tagline{margin-top:16px;font-size:19px;font-weight:800}.footer__rights{margin-top:10px;color:var(--muted);font-size:13px;max-width:40ch}.footer__col h3{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.footer__col ul{list-style:none;padding:0;margin-top:14px;display:grid;gap:9px}.footer__col a{color:var(--text-soft);font-size:14px;text-decoration:none;transition:color .15s ease}.footer__col a:hover{color:#a5d8f5}.footer__bottom{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:46px;padding-top:20px;border-top:1px solid rgba(148,163,184,.1);color:var(--muted);font-size:12.5px}.footer__license{flex:none;font-family:var(--mono)}.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1);will-change:opacity,transform}.reveal.is-in{opacity:1;transform:none}@keyframes drift-a{0%{transform:translate(0) scale(1)}to{transform:translate(6vw,9vh) scale(1.12)}}@keyframes drift-b{0%{transform:translate(0) scale(1)}to{transform:translate(-5vw,6vh) scale(1.08)}}@keyframes line-in{0%{opacity:0;transform:translate(-8px)}to{opacity:1;transform:none}}@keyframes blink{50%{opacity:0}}@keyframes sheen{0%,55%{transform:translate(-110%)}85%,to{transform:translate(110%)}}@keyframes float-a{0%,to{transform:translateY(0)}50%{transform:translateY(-14px)}}@keyframes float-b{0%,to{transform:translateY(0)}50%{transform:translateY(12px)}}@keyframes drip{0%{transform:scaleY(0);opacity:0}30%{transform:scaleY(1);opacity:1}to{transform:scaleY(1);opacity:0}}@media (max-width: 1020px){.feat-grid,.rule-grid,.limit-grid,.download__grid{grid-template-columns:repeat(2,1fr)}.download__grid .os-card:last-child{grid-column:1 / -1;min-height:auto}}@media (max-width: 900px){.hero__inner{grid-template-columns:1fr}.hero__visual{max-width:560px;width:100%;margin-inline:auto}.hero{padding-bottom:140px}.hero__scroll{display:none}.split__cols{grid-template-columns:1fr}.split__col+.split__col{border-left:none;border-top:1px solid var(--border)}}@media (max-width: 820px){.nav__links{display:none}.nav__actions{margin-left:auto}}@media (max-width: 640px){.section{padding:72px 0}.feat-grid,.rule-grid,.limit-grid,.download__grid{grid-template-columns:1fr}.download__grid .os-card:last-child{grid-column:auto}.flow-steps{grid-template-columns:1fr}.footer__grid{grid-template-columns:1fr;gap:28px}.chip--3{display:none}.hero__title{font-size:clamp(34px,11vw,46px)}}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.window{transform:none}.window__line{opacity:1}.reveal{opacity:1;transform:none}}
