.landing{font-size:15px;line-height:1.65;--section-width:1200px}
html{scroll-behavior:smooth;scroll-padding-top:100px}
.section-shell{width:min(var(--section-width),calc(100% - 96px));margin-inline:auto}
.site-header{height:88px;padding:0 48px;display:flex;align-items:center;justify-content:space-between;gap:30px;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg) 93%,transparent);position:sticky;top:0;z-index:20;backdrop-filter:blur(18px)}
.main-nav{display:flex;align-items:center;gap:30px;font-size:13px;color:var(--muted)}
.main-nav a:hover,.footer-links a:hover{color:var(--accent)}
.site-actions{display:flex;align-items:center;gap:18px}
.button{display:inline-flex;justify-content:center;align-items:center;gap:28px;min-height:51px;padding:14px 24px;border:1px solid transparent;border-radius:9px;background:var(--hero);color:var(--button-text);font-weight:650;font-size:14px;text-decoration:none;line-height:1.3;cursor:pointer;transition:transform .2s,box-shadow .2s}
.button:hover{transform:translateY(-2px);box-shadow:0 6px 20px color-mix(in srgb,var(--accent) 18%,transparent)}
.button-small{min-height:39px;padding:10px 15px;font-size:12px;gap:16px}
.button-outline{background:var(--panel);color:var(--text);border-color:var(--border)}
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.06fr);gap:58px;align-items:center;padding-block:85px 66px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:10px;font-weight:650;letter-spacing:1.4px;color:var(--muted)}
.landing h1{font-size:clamp(48px,5.2vw,72px);line-height:1.06;letter-spacing:-3.6px;font-weight:730;margin:25px 0}
.landing h1 br{display:block}
.gradient-text{background:var(--hero);background-clip:text;-webkit-background-clip:text;color:transparent}
.hero-description{font-size:16px;line-height:1.8;color:var(--muted);max-width:490px;margin:0}
.hero-actions{display:flex;align-items:center;gap:25px;margin-top:30px}
.text-button{font-size:13px;display:flex;align-items:center;gap:15px}
.text-button:hover{color:var(--accent)}
.small-note{font-size:11px;color:var(--muted);margin:15px 0 0}
.small-note>span:first-child{color:var(--success);margin-right:4px}
.geometry-demo{border:1px solid var(--border);border-radius:14px;background:var(--panel);overflow:hidden;box-shadow:0 16px 60px color-mix(in srgb,var(--accent) 6%,transparent);transform:rotate(-1deg)}
.demo-heading{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;font-size:9px;letter-spacing:.9px;color:var(--muted);border-bottom:1px solid var(--border);gap:8px}
.demo-heading>span:first-child{display:flex;gap:7px;align-items:center}
.demo-file{font-family:ui-monospace,Consolas,monospace;font-size:9px;letter-spacing:0;white-space:nowrap}
.demo-stage{position:relative;background:var(--canvas-bg)}
#geometry-demo{display:block;width:100%;height:auto}
.diagram-grid{stroke:var(--canvas-grid);stroke-width:.8}
.diagram-fill{fill:color-mix(in srgb,var(--accent) 5%,var(--canvas-bg));stroke:none}
.dimension{stroke:var(--muted);stroke-width:.7;fill:none;opacity:.6}
.dimension text{stroke:none;fill:var(--muted);font:10px ui-monospace,Consolas,monospace}
.origin-mark{stroke:var(--muted);stroke-width:1;fill:var(--muted);opacity:.65}
.origin-mark text{stroke:none;font:10px ui-monospace,Consolas,monospace}
#demo-original polyline{stroke:var(--original-line);stroke-width:1.6;fill:none}
#demo-original circle{fill:var(--original-node);stroke:var(--canvas-bg);stroke-width:1}
#demo-optimized path{stroke:var(--optimized-line);stroke-width:2.5;fill:none}
#demo-optimized circle{fill:var(--optimized-line);stroke:var(--canvas-bg);stroke-width:2}
#comparison-line{stroke:var(--accent);stroke-width:1;stroke-dasharray:4 4;opacity:.7}
#comparison-handle rect{fill:var(--panel);stroke:var(--accent);stroke-width:1}
#comparison-handle path{stroke:var(--accent);stroke-width:1.5;fill:none}
#comparison-slider{position:absolute;inset:0;width:100%;height:calc(100% - 35px);opacity:0;margin:0;cursor:ew-resize}
.demo-stage:has(#comparison-slider:focus-visible){outline:2px solid var(--accent);outline-offset:-2px}
.demo-caption{display:flex;justify-content:space-between;padding:0 17px 13px;color:var(--muted);font-size:9px}
.demo-badge{position:absolute;top:14px;display:flex;gap:6px;align-items:center;font-size:10px;color:var(--muted);pointer-events:none}
.badge-before{left:17px}.badge-after{right:17px}
.demo-badge i{width:5px;height:5px;border-radius:50%;background:var(--original-node)}
.badge-after i{background:var(--accent)}
.demo-bottom{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-top:1px solid var(--border);font-size:10px;color:var(--muted);gap:8px}
.demo-bottom>span{display:flex;gap:8px;align-items:center}
.node-symbol{width:18px;height:2px;background:var(--original-line);position:relative}
.node-symbol:after{content:'';position:absolute;width:5px;height:5px;top:-2px;left:7px;border-radius:50%;background:var(--original-node)}
.arc-symbol{width:17px;height:10px;border:2px solid var(--accent);border-bottom:0;border-radius:20px 20px 0 0}
.format-band{padding-block:26px;border-block:1px solid var(--border);display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px 24px}
.format-band .eyebrow{font-size:9px;letter-spacing:1.15px}
.format-list{display:flex;gap:28px;font-size:18px;font-weight:600;letter-spacing:-.5px;grid-column:2;grid-row:1 / 3}
.asterisk{color:var(--muted);font-size:10px;vertical-align:super;margin-left:2px}
.format-band p{font-size:10px;color:var(--muted);margin:0;max-width:440px}
.problem{display:grid;grid-template-columns:1fr 1fr;gap:90px;padding-block:85px}
.landing h2{font-size:clamp(28px,3vw,42px);line-height:1.2;letter-spacing:-1.6px;font-weight:650;margin:17px 0}
.problem h2{max-width:470px}
.problem-explanation p{color:var(--muted);font-size:14px;line-height:1.9;margin:0}
.problem-explanation .maker-note{color:var(--text);padding-left:15px;border-left:2px solid var(--accent);margin-top:22px;font-size:12px}
.section-space{padding-block:80px}
.workflow{border-top:1px solid var(--border)}
.section-title{max-width:660px}
.section-title p{font-size:13px;line-height:1.8;color:var(--muted);margin:16px 0 0}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:45px}
.steps article{padding-top:20px;border-top:1px solid var(--border);display:flex;flex-direction:column}
.step-number{color:var(--accent);font:11px ui-monospace,Consolas,monospace;display:flex;justify-content:space-between;align-items:center}
.step-number>span{font:26px var(--font);line-height:1}
.landing h3{font-size:18px;font-weight:600;letter-spacing:-.5px;line-height:1.4;margin:24px 0 10px}
.steps p,.benefits p{color:var(--muted);font-size:13px;line-height:1.85;margin:0}
.step-foot{display:flex;align-items:center;gap:14px;font:11px ui-monospace,Consolas,monospace;color:var(--muted);margin-top:auto;padding-top:28px}
.tolerance-line{display:inline-block;width:70px;height:3px;border-radius:3px;background:var(--hero);position:relative}
.tolerance-line:after{content:'';position:absolute;left:25px;top:-3px;border:2px solid var(--panel);width:9px;height:9px;border-radius:50%;background:var(--accent)}
.benefits-section{background:var(--panel);border-block:1px solid var(--border)}
.benefits{display:grid;grid-template-columns:repeat(4,1fr);gap:35px;margin-top:42px}
.feature-icon{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--accent);font-size:28px;line-height:1}
.benefits h3{font-size:16px;margin:20px 0 12px}
.benefits p{font-size:12px}
.pricing-heading{display:flex;justify-content:space-between;gap:32px;align-items:flex-end}
.pricing .section-title{max-width:610px}
.pricing-region{font-size:11px;color:var(--muted);white-space:normal;overflow-wrap:anywhere;max-width:100%;min-width:0}
.landing h1,.landing h2,.landing h3{overflow-wrap:break-word;hyphens:auto}
.price-card .plan-name{line-height:1.3}
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:45px;align-items:stretch}
.price-card{position:relative;background:var(--panel);border:1px solid var(--border);border-radius:13px;padding:30px;display:flex;flex-direction:column}
.price-card.featured{border-color:var(--accent);background:linear-gradient(160deg,color-mix(in srgb,var(--accent) 6%,var(--panel)),var(--panel) 65%)}
.plan-name{font-size:20px;font-weight:650;letter-spacing:-.7px}
.plan-audience{font-size:12px;color:var(--muted);margin:7px 0 24px;min-height:40px}
.price{display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}
.price>span{font-size:43px;letter-spacing:-2px;font-weight:650;line-height:1.3;font-variant-numeric:tabular-nums}
.price small{font-size:11px;color:var(--muted)}
.plan-quota{font-size:12px;font-weight:600;color:var(--accent);margin:12px 0 24px}
.price-card .button{width:100%;min-height:44px;font-size:12px}
.price-card ul{list-style:none;margin:25px 0 0;padding:22px 0 0;border-top:1px solid var(--border);font-size:11px;color:var(--muted)}
.price-card li{padding:6px 0;display:flex;gap:9px;align-items:baseline}
.price-card li:before{content:'✓';color:var(--accent)}
.plan-badge{position:absolute;top:-12px;right:20px;font-size:8px;font-weight:700;letter-spacing:1px;color:var(--button-text);background:var(--hero);border-radius:5px;padding:5px 9px}
.pricing-foot{font-size:11px;line-height:1.8;color:var(--muted);max-width:850px;margin:24px 0 0}
.faq{border-top:1px solid var(--border);display:grid;grid-template-columns:.8fr 1.2fr;gap:100px}
.faq details{border-bottom:1px solid var(--border);padding:20px 0}
.faq details:first-child{padding-top:0}
.faq summary{list-style:none;display:flex;justify-content:space-between;gap:18px;align-items:center;font-size:14px;font-weight:550;cursor:pointer}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:'+';font-size:20px;color:var(--muted);font-weight:400;flex-shrink:0}
.faq details[open] summary:after{content:'−';color:var(--accent)}
.faq details p{font-size:12px;line-height:1.9;color:var(--muted);margin:13px 25px 0 0}
.final-cta{display:flex;justify-content:space-between;gap:30px;align-items:center;border:1px solid var(--border);border-radius:16px;padding:45px 50px;margin-bottom:70px;background:linear-gradient(110deg,var(--panel),color-mix(in srgb,var(--accent) 8%,var(--panel)));position:relative;overflow:hidden}
.final-cta h2{font-size:34px;margin:14px 0}
.final-cta p{font-size:13px;color:var(--muted);margin:0}
.final-cta .button{flex-shrink:0}
.site-footer{border-top:1px solid var(--border);padding-block:35px 45px;display:flex;justify-content:space-between;gap:30px;align-items:center}
.site-footer .brand-word{gap:0;font-size:27px}
.site-footer p{font-size:10px;color:var(--muted);margin:7px 0 0}
.footer-links{display:flex;gap:25px;font-size:11px;color:var(--muted)}
.footer-end{font-size:10px;line-height:1.9;color:var(--muted);text-align:right}
#plan-dialog{width:min(490px,calc(100% - 32px));color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:38px;box-shadow:var(--shadow)}
#plan-dialog::backdrop{background:#060b14a6;backdrop-filter:blur(4px)}
#plan-dialog h2{font-size:27px;letter-spacing:-1px}
#plan-dialog p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:25px}
.dialog-close{position:absolute;right:15px;top:10px;background:none;border:0;color:var(--muted);font-size:27px}
@media(min-width:1500px){.landing{--section-width:1320px}.hero{gap:90px;padding-block:100px 80px}.landing h1{font-size:80px}}
@media(max-width:1100px){.site-header{padding-inline:28px;gap:20px}.main-nav{gap:20px}.main-nav a:nth-child(2){display:none}.site-actions{gap:12px}.section-shell{width:calc(100% - 64px)}.hero{gap:30px}.landing h1{font-size:56px}.hero-description{font-size:14px}.hero .eyebrow{font-size:8px}.problem,.faq{gap:50px}.pricing-heading{display:block}.pricing-region{margin-top:18px}.benefits{grid-template-columns:repeat(2,1fr);gap:35px 50px}}
@media(max-width:760px){.section-shell{width:calc(100% - 40px)}.site-header{height:75px;padding-inline:20px;gap:10px}.main-nav{display:none}.site-actions{gap:10px}.site-header .brand{gap:8px}.site-header .brand-mark{width:32px;height:32px}.site-header .brand-word{font-size:23px}.header-cta{display:none}.hero{grid-template-columns:1fr;gap:42px;padding-block:48px}.landing h1{font-size:clamp(48px,9vw,70px);letter-spacing:-2.8px}.hero .eyebrow{font-size:9px}.hero-description{font-size:15px;max-width:550px}.hero-copy{max-width:580px}.geometry-demo{transform:none;max-width:560px;width:100%;margin-inline:auto}.hero-actions{gap:22px}.demo-heading{font-size:8px}.format-band{display:flex;flex-direction:column;align-items:flex-start;gap:17px;padding-block:25px}.format-list{gap:25px;font-size:17px}.format-band p{font-size:10px}.problem{grid-template-columns:1fr;gap:20px;padding-block:55px}.problem h2{max-width:550px}.section-space{padding-block:55px}.steps{grid-template-columns:1fr;gap:28px;margin-top:28px}.steps article{position:relative;padding-left:48px}.step-number{position:absolute;top:24px;left:0}.step-number>span{display:none}.steps h3{margin-top:0}.step-foot{padding-top:16px}.benefits{gap:32px 25px;margin-top:30px}.price-grid{grid-template-columns:1fr;gap:28px;margin-top:35px}.price-card{padding:26px}.plan-audience{min-height:0;margin-bottom:18px}.price-card ul{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.price-card li{font-size:10px}.price-card .button{max-width:none}.faq{grid-template-columns:1fr;gap:25px}.faq-list details:first-child{padding-top:15px}.final-cta{padding:28px;flex-direction:column;align-items:flex-start;margin-bottom:40px}.final-cta h2{font-size:29px}.site-footer{align-items:flex-start;flex-wrap:wrap}.footer-links{gap:17px;flex-direction:column}.footer-end{width:100%;text-align:left}.landing h2{letter-spacing:-1.1px}.landing h3{letter-spacing:-.3px}}
@media(max-width:380px){.section-shell{width:calc(100% - 28px)}.site-header{padding-inline:12px}.site-header .brand-mark{display:none}.site-actions{gap:5px}.benefits{grid-template-columns:1fr}.format-list{gap:18px}.hero-actions{gap:15px}.button{padding-inline:20px}.demo-file{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button:hover{transform:none}}
@media(max-width:420px){.site-header{height:auto;min-height:75px;flex-wrap:wrap;padding:12px 16px;gap:10px}.site-actions{margin-left:auto}.landing h1{font-size:44px;letter-spacing:-2px}.hero-actions{flex-wrap:wrap}.price-card ul{grid-template-columns:1fr}.demo-heading{font-size:7px}.demo-file{display:none}}