:root{--canvas: #050505;--recess: #020202;--surface: #0e0e0e;--elevated: #161616;--hover: #1d1d22;--selected: rgba(201, 240, 59, .08);--line: #2a2a2a;--line-subtle: #1f1f1f;--line-strong: #3a3a3a;--fg: #f5f5f5;--fg-muted: #b5b5b5;--fg-dim: #707070;--accent: #c9f03b;--accent-hover: #d6ff4a;--accent-dim: #8ba628;--accent-bg: rgba(201, 240, 59, .12);--success: #4ade80;--warning: #ffc857;--danger: #ff5a5a;--cyan: #5ac8ff;--font-cjk: "PingFang SC", "Hiragino Sans GB", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "Noto Sans SC", "Microsoft YaHei", "WenQuanYi Micro Hei";--font-display: "Chakra Petch", ui-sans-serif, system-ui, var(--font-cjk), sans-serif;--font-sans: "Manrope", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, var(--font-cjk), sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, var(--font-cjk), monospace;--shadow-glow: 0 0 0 1px rgba(201, 240, 59, .45), 0 0 24px -4px rgba(201, 240, 59, .5);--shadow-soft: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);--shadow-lime: 0 6px 16px -4px rgba(201, 240, 59, .35);--nav-h: 62px;--hero-copy-w: 660px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}body{margin:0;background:var(--canvas);color:var(--fg);font-family:var(--font-sans);line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;background-image:radial-gradient(ellipse 60% 40% at 88% -8%,rgba(201,240,59,.05),transparent 60%),radial-gradient(ellipse 50% 30% at -10% 108%,rgba(90,200,255,.03),transparent 60%);background-attachment:fixed}h1,h2,h3{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:-.005em;margin:0 0 .5em}h1{font-size:clamp(2.3rem,4.6vw,3.9rem);line-height:1.02;letter-spacing:-.01em}h2{font-size:clamp(1.6rem,3.2vw,2.5rem);line-height:1.06}h3{font-size:1rem;font-weight:600;letter-spacing:.02em}p{margin:0 0 1em}a{color:var(--accent);text-decoration:none}button{font-family:inherit}em{font-style:italic;color:var(--fg-muted)}code{font-family:var(--font-mono);font-size:.88em;color:var(--accent)}:root:lang(zh) body{line-height:1.85}:root:lang(zh) h1{line-height:1.2;letter-spacing:.01em}:root:lang(zh) h2{line-height:1.28;letter-spacing:.01em}:root:lang(zh) h3{letter-spacing:.03em}:root:lang(zh) .kicker,:root:lang(zh) .brand-eyebrow,:root:lang(zh) .nav-link,:root:lang(zh) .btn,:root:lang(zh) .nav-btn,:root:lang(zh) .panel-label,:root:lang(zh) .check-kind,:root:lang(zh) .scene-tag,:root:lang(zh) .boot-step-label,:root:lang(zh) .boot-readout{letter-spacing:.06em}:root:lang(zh) em{font-style:normal;color:var(--fg);-webkit-text-emphasis:dot currentColor;text-emphasis:dot currentColor;-webkit-text-emphasis-position:under right;text-emphasis-position:under right}:root:lang(zh) .thought,:root:lang(zh) .section-intro,:root:lang(zh) .hero-pitch,:root:lang(zh) .why-card p,:root:lang(zh) .footer-note{line-height:1.9}::selection{background:var(--accent);color:var(--canvas)}*{scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}*::-webkit-scrollbar{width:9px;height:9px}*::-webkit-scrollbar-track{background:transparent}*::-webkit-scrollbar-thumb{background:var(--line)}*::-webkit-scrollbar-thumb:hover{background:var(--line-strong)}:focus-visible{outline:1px solid var(--accent);outline-offset:2px}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.kicker,.brand-eyebrow{font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--fg-dim);margin:0 0 14px;display:block}.kicker .act,.signal{color:var(--accent)}.notch-sm{clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,6px 100%,0 calc(100% - 6px))}.notch-md{clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px))}.notch-lg{clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,24px 100%,0 calc(100% - 24px))}.hexagon{clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}.brand-scan{background:repeating-linear-gradient(135deg,transparent 0 80px,rgba(201,240,59,.05) 80px 81px)}@keyframes scan-drift{0%{background-position:0 0}to{background-position:240px -240px}}.scan-drift{animation:scan-drift 24s linear infinite}.bracket-tl,.bracket-br{position:absolute;width:18px;height:18px;pointer-events:none;z-index:3}.bracket-tl{top:12px;left:12px;border-top:1px solid var(--fg-dim);border-left:1px solid var(--fg-dim)}.bracket-br{bottom:12px;right:12px;border-bottom:1px solid var(--fg-dim);border-right:1px solid var(--fg-dim)}.grain{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;pointer-events:none;opacity:.035;mix-blend-mode:overlay;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}@keyframes hover-trail{0%{transform:translate(-100%)}to{transform:translate(100%)}}.trail{position:relative;overflow:hidden}.trail:after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:linear-gradient(90deg,transparent,var(--accent),transparent);transform:translate(-100%);pointer-events:none}.trail:hover:after{animation:hover-trail .9s cubic-bezier(.2,.8,.2,1)}@keyframes letter-rise{0%{opacity:0;transform:translateY(.45em);filter:blur(5px)}to{opacity:1;transform:translateY(0);filter:blur(0)}}.lr-word{display:inline-block;white-space:nowrap}.lr-char{display:inline-block;white-space:pre;animation:letter-rise .52s cubic-bezier(.2,.8,.2,1) both}@keyframes fade-in-up{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fade-in-up .32s cubic-bezier(.2,.8,.2,1) both}@keyframes signal-pulse{0%,to{opacity:1}50%{opacity:.35}}.page{min-height:100vh}.boot{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9000;display:grid;place-items:center;padding:24px;background:var(--canvas);background-image:radial-gradient(ellipse 70% 55% at 50% 42%,rgba(201,240,59,.06),transparent 65%);opacity:1;transition:opacity .7s cubic-bezier(.2,.8,.2,1)}.boot-out{opacity:0;pointer-events:none}.boot-scan{position:absolute;top:0;right:0;bottom:0;left:0;opacity:.5;pointer-events:none;-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 45%,#000 15%,transparent 75%);mask-image:radial-gradient(ellipse 70% 60% at 50% 45%,#000 15%,transparent 75%)}.boot-panel{position:relative;width:min(560px,100%);padding:44px 42px 40px;border:1px solid var(--line);background:#0d0d0d;clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,24px 100%,0 calc(100% - 24px));animation:fade-in-up .42s cubic-bezier(.2,.8,.2,1) both}.boot-panel .kicker{margin:20px 0 6px}.boot-title{font-size:clamp(1.7rem,4vw,2.3rem);line-height:1;margin:0 0 28px}.boot-steps{display:flex;flex-direction:column;gap:1px;background:var(--line-subtle);border:1px solid var(--line-subtle);margin-bottom:22px}.boot-step{display:grid;grid-template-columns:16px 74px 1fr auto;gap:10px;align-items:baseline;padding:10px 13px;background:var(--recess);font-family:var(--font-mono);font-size:11px;letter-spacing:.06em}.boot-step-mark{color:var(--fg-dim)}.boot-step-label{letter-spacing:.18em;text-transform:uppercase;color:var(--fg-dim)}.boot-step-what{color:#5c5c5c}.boot-step-value{color:var(--fg-muted);white-space:nowrap}.boot-step-active .boot-step-mark{color:var(--accent);animation:signal-pulse 1.4s ease-in-out infinite}.boot-step-active .boot-step-label{color:var(--fg)}.boot-step-active .boot-step-value,.boot-step-done .boot-step-mark{color:var(--accent)}.boot-bar{position:relative;height:4px;background:var(--line-subtle);border:1px solid var(--line-subtle);overflow:hidden}.boot-bar-fill{display:block;height:100%;background:linear-gradient(90deg,var(--accent-dim),var(--accent));box-shadow:0 0 12px #c9f03b80;transform-origin:0 50%;transform:scaleX(0);transition:transform .22s cubic-bezier(.2,.8,.2,1)}.boot-readout{display:flex;align-items:baseline;gap:12px;margin-top:10px;font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase}.boot-pct{color:var(--accent);white-space:pre}.boot-file{color:var(--fg-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.boot-missing{margin-left:auto;color:var(--warning);white-space:nowrap}.boot-failed{margin:16px 0 0;font-family:var(--font-mono);font-size:11px;line-height:1.6;letter-spacing:.04em;color:var(--danger)}.boot-skip{margin-top:18px;transition:opacity .3s ease}.boot-skip-hidden{opacity:0;pointer-events:none}@media (max-width: 560px){.boot-panel{padding:32px 24px 30px}.boot-step{grid-template-columns:14px 1fr auto}.boot-step-what{display:none}}.nav{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--line-subtle);background:#050505b8;backdrop-filter:blur(14px) saturate(160%);-webkit-backdrop-filter:blur(14px) saturate(160%);transition:border-color .2s ease,background-color .2s ease}.nav-lifted{border-bottom-color:var(--line);background:#050505e0}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--nav-h);padding:0 clamp(16px,3vw,30px)}.nav-brand{display:inline-flex;align-items:center;gap:12px;color:inherit}.logo{display:inline-flex;align-items:center;gap:11px}.logo-rule{width:1px;align-self:stretch;background:var(--line)}.logo-word{font-family:var(--font-display);font-weight:700;letter-spacing:.18em;line-height:1;text-transform:uppercase;color:var(--fg);white-space:nowrap}.nav-product{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.2em;padding:3px 8px 2px;color:var(--accent);background:var(--accent-bg);border:1px solid rgba(201,240,59,.25)}.nav-links{display:flex;align-items:center;gap:22px}.nav-link{position:relative;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-muted);padding:4px 0;transition:color .15s ease}.nav-link:hover{color:var(--fg)}.nav-link-on{color:var(--accent)}.nav-link-on:after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--accent)}.lang-switch{display:inline-flex;align-items:center;gap:2px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em}.lang-slot{display:inline-flex;align-items:center;gap:2px}.lang-sep{color:var(--line-strong);-webkit-user-select:none;user-select:none}.lang-btn{padding:3px 5px;color:var(--fg-dim);background:none;border:0;font:inherit;letter-spacing:inherit;cursor:pointer;transition:color .15s ease}.lang-btn:hover{color:var(--fg)}.lang-btn-on{color:var(--accent)}.boot-lang{display:flex;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.nav-progress{position:absolute;left:0;right:0;bottom:-1px;height:1px;overflow:hidden}.nav-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--accent-dim),var(--accent));transform-origin:0 50%;transform:scaleX(0)}.btn,.nav-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;font-family:var(--font-display);font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--fg);background:transparent;border:1px solid var(--line-strong);cursor:pointer;white-space:nowrap;overflow:hidden;transition:background-color .15s ease,border-color .15s ease,color .15s ease,box-shadow .15s ease}.btn:hover,.nav-btn:hover{border-color:var(--accent);color:var(--accent)}.btn:disabled,.nav-btn:disabled{opacity:.32;cursor:default}.btn:disabled:hover,.nav-btn:disabled:hover{border-color:var(--line-strong);color:var(--fg)}.btn-lg{padding:14px 26px;font-size:13px}@keyframes send-fire{0%{transform:translate(-120%) skew(-12deg);opacity:0}20%{opacity:.9}to{transform:translate(220%) skew(-12deg);opacity:0}}.btn-primary,.nav-btn.nav-primary{background:var(--accent);border-color:var(--accent);color:var(--canvas);clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px))}.btn-primary:hover,.nav-btn.nav-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:var(--canvas);box-shadow:var(--shadow-lime)}.btn-primary:after,.nav-btn.nav-primary:after{content:"";position:absolute;top:0;left:0;width:40%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);opacity:0;pointer-events:none}.btn-primary:hover:after,.nav-btn.nav-primary:hover:after{animation:send-fire .9s cubic-bezier(.2,.8,.2,1)}.nav-btn.nav-danger{background:var(--danger);border-color:var(--danger);color:#1a0505;clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px))}.nav-btn.nav-danger:hover{background:#ff7070;border-color:#ff7070;color:#1a0505}.link-btn{background:none;border:none;padding:7px 0;text-align:left;cursor:pointer;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-dim);transition:color .15s ease}.link-btn:hover{color:var(--accent)}input[type=checkbox]{-webkit-appearance:none;-moz-appearance:none;appearance:none;flex:none;width:14px;height:14px;margin:0;background:var(--recess);border:1px solid var(--line-strong);cursor:pointer;transition:background-color .12s ease,border-color .12s ease}input[type=checkbox]:hover{border-color:var(--accent-dim)}input[type=checkbox]:checked{background:var(--accent);border-color:var(--accent);clip-path:polygon(0 0,calc(100% - 4px) 0,100% 4px,100% 100%,4px 100%,0 calc(100% - 4px))}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:3px;background:var(--line);cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:11px;height:15px;background:var(--accent);border:none;box-shadow:0 0 10px #c9f03b73}input[type=range]::-moz-range-thumb{width:11px;height:15px;border:none;border-radius:0;background:var(--accent)}.hero{position:relative;height:calc(100vh - var(--nav-h));min-height:640px;overflow:hidden;border-bottom:1px solid var(--line-subtle)}.hero-scene{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;padding-left:min(var(--hero-copy-w),52%)}.hero-video{width:100%;height:100%;max-width:828px;max-height:720px;object-fit:cover;display:block;-webkit-mask-image:radial-gradient(ellipse 78% 82% at 50% 50%,#000 58%,transparent 94%);mask-image:radial-gradient(ellipse 78% 82% at 50% 50%,#000 58%,transparent 94%)}.hero-fade{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(90deg,#050505f7,#050505e6 30%,#05050526 62%,#05050573),linear-gradient(0deg,#050505f2,#05050500 34%)}.hero-scan{position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;pointer-events:none;opacity:.55;-webkit-mask-image:radial-gradient(ellipse 80% 70% at 60% 45%,#000 20%,transparent 78%);mask-image:radial-gradient(ellipse 80% 70% at 60% 45%,#000 20%,transparent 78%)}.hero-copy{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;max-width:var(--hero-copy-w);padding:0 clamp(20px,6vw,72px)}.hero-copy h1{margin:0 0 22px}.hero-pitch{color:var(--fg-muted);font-size:1.02rem;max-width:58ch}.hero-pitch strong,.thought strong{color:var(--fg);font-weight:600}.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-subtle);border:1px solid var(--line-subtle);margin:28px 0 30px;width:fit-content}.stat{background:#050505d1;padding:13px 22px 12px;min-width:132px}.stat-n{font-family:var(--font-mono);font-size:1.55rem;font-weight:600;line-height:1.1;color:var(--accent);letter-spacing:-.01em}.stat-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-dim);margin-top:5px}.hero-ctas{display:flex;gap:12px;flex-wrap:wrap}.hero-note{margin:22px 0 0;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--fg-dim)}.live-dot{display:inline-block;width:6px;height:7px;margin-right:9px;vertical-align:1px;background:var(--accent);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);animation:signal-pulse 2.4s ease-in-out infinite}.panel-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--fg-dim);margin:22px 0 9px;padding-bottom:7px;border-bottom:1px solid var(--line-subtle);display:flex;justify-content:space-between;gap:10px;align-items:baseline}.panel-note{letter-spacing:.06em;color:#5c5c5c;text-transform:none}.section-head{max-width:900px;margin:0 auto;padding:92px 24px 34px}.section-intro{color:var(--fg-muted);font-size:1rem;max-width:74ch}.step-player{display:grid;grid-template-columns:minmax(400px,520px) 1fr;height:calc(100vh - var(--nav-h));min-height:680px;border-top:1px solid var(--line-subtle)}.step-rail{display:flex;flex-direction:column;border-right:1px solid var(--line);background:var(--surface);overflow:hidden}.step-rail-inner{flex:1;overflow-y:auto;padding:30px 30px 18px}.stage-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}.stage-tick{flex:none;display:grid;place-items:center;width:30px;height:34px;background:var(--accent-bg);color:var(--accent);font-family:var(--font-mono);font-size:12px;font-weight:600;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}.stage-head .kicker{margin:0}.step-rail h2{font-size:clamp(1.35rem,2.2vw,1.85rem);margin-bottom:.6em}.thought{color:var(--fg-muted);font-size:.95rem}.code-block{background:var(--recess);border:1px solid var(--line-subtle);border-left:2px solid var(--accent-dim);padding:15px 17px;overflow-x:auto;margin:0 0 4px;font-family:var(--font-mono);font-size:.77rem;line-height:1.62;color:#d4d4d4}.tok-comment{color:#5a5a5a;font-style:italic}.tok-string{color:#c9f03b}.tok-number{color:#ffc857}.tok-keyword{color:#9ba7b8}.tok-call{color:#e8e3db;font-weight:500}.diag-list{display:flex;flex-direction:column;gap:6px}.diag{position:relative;background:var(--elevated);border:1px solid var(--line-subtle);border-left:2px solid var(--line-strong);padding:9px 13px;font-size:.83rem;cursor:pointer;transition:background-color .14s ease,border-color .14s ease}.diag:hover{background:var(--hover)}.diag-clean{cursor:default;display:flex;gap:9px;align-items:baseline;color:var(--success);border-left-color:var(--success);font-family:var(--font-mono);font-size:.78rem;letter-spacing:.04em}.diag-clean:hover{background:var(--elevated)}.diag-error{border-left-color:var(--danger)}.diag-warn{border-left-color:var(--warning)}.diag-hint{border-left-color:var(--line-strong)}.diag-head{display:flex;gap:9px;align-items:baseline;font-family:var(--font-mono)}.diag-mark{font-weight:700}.diag-error .diag-mark,.diag-error .diag-code{color:var(--danger)}.diag-warn .diag-mark,.diag-warn .diag-code{color:var(--warning)}.diag-hint .diag-mark,.diag-hint .diag-code{color:var(--fg-dim)}.diag-code{font-size:.74rem;font-weight:600;letter-spacing:.06em}.diag-where{margin-left:auto;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--fg-dim)}.diag-what{color:var(--fg-muted);margin-top:3px}.diag-detail{margin-top:8px;padding-top:8px;border-top:1px solid var(--line-subtle);color:var(--fg-muted)}.diag-why{font-style:italic;margin-bottom:5px;font-size:.82rem}.diag-fix{font-family:var(--font-mono);font-size:.75rem;color:var(--accent)}.trace-list{display:flex;flex-direction:column;gap:1px;margin-top:8px;background:var(--line-subtle);border:1px solid var(--line-subtle)}.trace{display:flex;gap:10px;align-items:baseline;font-family:var(--font-mono);font-size:.72rem;padding:5px 11px;background:var(--recess)}.trace-ok{color:var(--fg-muted)}.trace-fail{color:var(--danger)}.trace-op{color:var(--accent);width:66px;flex:none;letter-spacing:.04em}.trace-note{color:#5c5c5c;margin-left:auto;padding-left:10px}.req-list{display:flex;flex-direction:column;gap:5px}.req{display:flex;gap:9px;align-items:baseline;flex-wrap:wrap;background:var(--elevated);border:1px solid var(--line-subtle);border-left:2px solid var(--line-strong);padding:8px 13px;font-size:.82rem}.req-mark{font-weight:700}.req-satisfied{border-left-color:var(--success)}.req-satisfied .req-mark,.req-satisfied .req-status{color:var(--success)}.req-violated{border-left-color:var(--danger)}.req-violated .req-mark,.req-violated .req-status{color:var(--danger)}.req-unchecked .req-mark,.req-unchecked .req-status{color:var(--fg-dim)}.req-id{font-family:var(--font-mono);font-size:.73rem;letter-spacing:.06em;color:var(--accent)}.req-text{color:var(--fg-muted)}.req-status{margin-left:auto;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase}.step-nav{display:flex;align-items:center;gap:14px;padding:14px 24px 8px;border-top:1px solid var(--line);background:var(--recess)}.step-dots{display:flex;gap:5px;flex:1;justify-content:center;flex-wrap:wrap}.dot{width:11px;height:13px;padding:0;border:none;cursor:pointer;background:var(--line);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);transition:background-color .16s ease,transform .16s ease}.dot:hover{background:var(--line-strong);transform:scale(1.18)}.dot-done{background:var(--accent-dim)}.dot-on{background:var(--accent);box-shadow:0 0 10px #c9f03b99;transform:scale(1.18)}.auto-toggle{display:flex;gap:9px;align-items:center;padding:4px 24px 13px;background:var(--recess);font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-dim);cursor:pointer}.step-scene{position:relative;background:var(--recess)}.scene-frame{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:2}.scene-caption{position:absolute;bottom:12px;right:16px;z-index:2;font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-dim);pointer-events:none}.scene-tag{position:absolute;top:14px;right:16px;z-index:2;display:flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);pointer-events:none}.scene-tag:before{content:"";width:6px;height:7px;background:var(--accent);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);animation:signal-pulse 2.4s ease-in-out infinite}.checks{border-top:1px solid var(--line-subtle);padding-bottom:72px}.check-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:12px;max-width:1240px;margin:0 auto;padding:0 24px}.check-card{position:relative;overflow:hidden;display:flex;flex-direction:column;gap:9px;text-align:left;background:var(--surface);border:1px solid var(--line);padding:18px 20px 16px;color:var(--fg);cursor:pointer;transition:background-color .16s ease,border-color .16s ease,transform .16s ease;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px))}.check-card:hover{background:var(--elevated);border-color:var(--line-strong);transform:translateY(-2px)}.check-card-open{border-color:var(--accent);background:var(--elevated)}.check-codes{display:flex;gap:6px;flex-wrap:wrap}.check-code{font-family:var(--font-mono);font-size:.65rem;font-weight:600;letter-spacing:.08em;color:var(--danger);background:#ff5a5a1a;border:1px solid rgba(255,90,90,.24);padding:3px 8px 2px}.check-kind-guarantee .check-code{color:var(--accent);background:var(--accent-bg);border-color:#c9f03b42}.check-title{font-family:var(--font-display);font-weight:600;text-transform:uppercase;letter-spacing:.02em;font-size:.98rem;line-height:1.2}.check-blurb{font-size:.83rem;color:var(--fg-muted);flex:1}.check-kind{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-dim);padding-top:3px;border-top:1px solid var(--line-subtle)}.check-detail{display:grid;grid-template-columns:minmax(380px,480px) 1fr;max-width:1240px;margin:18px auto 0;border:1px solid var(--line);overflow:hidden;background:var(--surface);min-height:580px;animation:fade-in-up .32s cubic-bezier(.2,.8,.2,1) both}.check-detail-rail{padding:26px 28px;overflow-y:auto;max-height:78vh}.check-detail-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:4px}.check-detail-head h3{font-size:1.15rem;font-weight:700;margin:0}.check-detail-codes{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 16px}.check-detail-scene{position:relative;min-height:580px;border-left:1px solid var(--line);background:var(--recess)}.fix-toggle{display:flex;gap:8px;margin:14px 0 12px}.audit{font-family:var(--font-mono);font-size:.74rem;line-height:1.6;color:var(--accent);background:var(--recess);border:1px solid var(--line-subtle);border-left:2px solid var(--accent-dim);padding:13px 15px;white-space:pre-wrap;margin-top:14px}.explorer{border-top:1px solid var(--line-subtle);padding-bottom:80px}.explorer-body{display:grid;grid-template-columns:312px 1fr;max-width:1340px;margin:0 auto;border:1px solid var(--line);overflow:hidden;background:var(--surface)}.explorer-controls{padding:22px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:2px;background:var(--surface)}.control-group{padding:6px 0 14px;border-bottom:1px solid var(--line-subtle)}.control-group:last-child{border-bottom:none}.control-group .panel-label{margin-top:10px}.check-line{display:flex;gap:10px;align-items:center;font-size:.83rem;color:var(--fg-muted);padding:5px 0;cursor:pointer;transition:color .14s ease}.check-line:hover{color:var(--fg)}.control-note{font-family:var(--font-mono);font-size:.7rem;line-height:1.6;letter-spacing:.03em;color:#5c5c5c;margin-top:8px}.check-line .control-note{margin:0;display:inline}.level-btns{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}.level-btns .nav-btn{padding:5px 11px;font-size:10px}.explorer-controls input[type=range]{margin:14px 0 4px}.explorer-scene{position:relative;min-height:76vh;background:var(--recess)}.pick-info .pick-id{font-family:var(--font-mono);font-size:.82rem;letter-spacing:.04em;color:var(--accent);word-break:break-all}.why{border-top:1px solid var(--line-subtle);padding-bottom:48px}.why-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:14px;max-width:1240px;margin:0 auto;padding:0 24px}.why-card{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--line);padding:24px 24px 26px;transition:border-color .18s ease,background-color .18s ease}.why-card:hover{border-color:var(--line-strong);background:var(--elevated)}.why-num{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--accent)}.why-card h3{margin:14px 0 10px;color:var(--fg);font-size:1rem}.why-card p{margin:0;color:var(--fg-muted);font-size:.88rem;line-height:1.62}.footer{border-top:1px solid var(--line-subtle);margin-top:64px;padding:40px clamp(20px,5vw,48px) 52px}.footer-inner{max-width:1240px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}.footer-meta{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-dim)}@media (max-width: 1080px){.nav-link{display:none}.nav-links{gap:14px}}@media (max-width: 980px){.step-player{grid-template-columns:1fr;height:auto}.step-scene{height:60vh}.step-rail{border-right:none;border-bottom:1px solid var(--line)}.step-rail-inner{max-height:none}.check-detail{grid-template-columns:1fr}.check-detail-scene{min-height:48vh;border-left:none;border-top:1px solid var(--line)}.explorer-body{grid-template-columns:1fr}.explorer-controls{border-right:none;border-bottom:1px solid var(--line)}.explorer-scene{min-height:58vh}.hero{height:auto;min-height:0;padding:0}.hero-scene{padding-left:0}.hero-copy{padding-top:88px;padding-bottom:72px;min-height:92vh}.hero-stats{grid-template-columns:repeat(2,1fr);width:100%}}@media (max-width: 560px){.nav-product{display:none}.hero-stats{grid-template-columns:1fr 1fr}.stat{min-width:0;padding:11px 14px}.stat-n{font-size:1.3rem}.section-head{padding-top:64px}.check-grid,.why-grid{padding:0 16px}.step-rail-inner{padding:24px 18px 14px}}.gate-page{min-height:100%}.gate{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;z-index:50}.gate-panel{gap:0}.gate-blurb{margin:10px 0 22px;white-space:pre-wrap;color:var(--fg-muted);font-size:14px;line-height:1.5;text-align:center}.gate-fields{display:flex;flex-direction:column;gap:10px;width:100%}.gate-input{width:100%;min-width:0;padding:12px 14px;background:var(--recess);border:1px solid var(--line-strong);color:var(--fg);font-family:var(--font-mono);font-size:15px;letter-spacing:.12em;transition:border-color .15s ease,box-shadow .15s ease}.gate-input-email{letter-spacing:.04em}.gate-input::placeholder{color:var(--fg-dim);letter-spacing:.04em}.gate-input:focus{outline:none;border-color:var(--accent-dim);box-shadow:var(--shadow-glow)}.gate-input:disabled{opacity:.6}.gate-btn{width:100%;margin-top:4px;padding:13px 20px}.gate-error{margin:12px 0 0;color:var(--danger);font-size:13px;text-align:center;max-width:36ch;line-height:1.45}.gate-notice{margin:16px 0 0;width:100%;color:var(--fg-dim);font-family:var(--font-mono);font-size:11px;line-height:1.5;letter-spacing:.04em;text-align:center}.gate-bar{margin-top:22px}.gate-lang{margin-top:20px}.gate-dev{margin:14px 0 0;color:var(--fg-dim);font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}#wm{position:fixed;right:12px;bottom:12px;z-index:9;pointer-events:none;-webkit-user-select:none;user-select:none;color:var(--fg-dim);font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;opacity:.38}