.landing-page{--landing-shell: 1360px;margin:0;overflow-x:hidden;background:var(--difflane-paper-base);color:var(--difflane-ink-base);font-family:var(--difflane-font-ui);line-height:1.2}.landing-page main{overflow:hidden}.landing-page h1,.landing-page h2,.landing-page h3,.landing-page p{margin:0}.landing-page h1,.landing-page h2,.landing-page h3{letter-spacing:-0.045em}.landing-page a{text-decoration:none}.landing-page a:focus-visible,.landing-page button:focus-visible,.landing-page input:focus-visible{outline:var(--difflane-focus-ring-on-paper);outline-offset:var(--difflane-focus-offset)}.landing-shell{width:min(100% - 80px,var(--landing-shell));margin-inline:auto}.landing-label{color:var(--difflane-accent-primary);font:700 .7rem/1.2 var(--difflane-font-mono);letter-spacing:.08em}.landing-header{min-height:132px;display:flex;align-items:center;justify-content:space-between}.landing-brand{display:inline-flex;align-items:center;gap:14px;color:var(--difflane-ink-base);font-size:1.4rem;font-weight:700;letter-spacing:-0.035em}.landing-cta{min-height:var(--difflane-control-height-landing);padding:0 22px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--difflane-radius-control);background:var(--difflane-accent-primary);color:var(--difflane-accent-on-primary);font:700 .72rem/1 var(--difflane-font-mono);letter-spacing:.02em;text-align:center}.landing-cta{border:0;cursor:pointer}.early-access-modal{width:min(100% - 32px,560px);max-height:calc(100dvh - 32px);padding:0;overflow:auto;border:0;border-radius:var(--difflane-panel-radius);background:var(--difflane-paper-base);color:var(--difflane-ink-base)}.early-access-modal::backdrop{background:rgba(16,14,12,.72)}.early-access-modal__panel{padding:clamp(32px,7vw,56px);position:relative}.early-access-modal__close{width:44px;height:44px;position:absolute;right:18px;top:18px;border:0;background:rgba(0,0,0,0);color:var(--difflane-ink-base);cursor:pointer;font-size:2rem;line-height:1}.early-access-modal h2{max-width:420px;margin-top:22px;font-size:clamp(2.4rem,8vw,4rem);font-weight:800;line-height:.95}.early-access-modal h2+p{max-width:430px;margin-top:24px;color:var(--difflane-text-secondary-on-paper);font-size:1.1rem;line-height:1.35}.early-access-modal form{margin-top:36px}.early-access-modal__field{display:grid;gap:10px}.early-access-modal label,.early-access-modal__privacy{font:700 .68rem/1.2 var(--difflane-font-mono);letter-spacing:.05em}.early-access-modal input[type=email]{width:100%;min-height:var(--difflane-control-height-landing);padding:0 16px;border:1px solid var(--difflane-paper-border);border-radius:var(--difflane-radius-control);background:var(--difflane-paper-warm);color:var(--difflane-ink-base);font:600 1rem var(--difflane-font-ui)}.early-access-modal input[aria-invalid=true]{border-color:var(--difflane-accent-primary)}.early-access-modal form>.landing-cta,.early-access-modal__panel>.landing-cta{width:100%;margin-top:18px}.early-access-modal__privacy{margin-top:16px !important;color:var(--difflane-text-secondary-on-paper);text-align:center}.early-access-modal__error{margin-top:10px !important;color:var(--difflane-accent-primary);font:700 .78rem/1.35 var(--difflane-font-mono)}.early-access-modal[aria-busy=true] form{opacity:.72}.landing-hero{min-height:430px;padding:56px 0 90px;display:grid;grid-template-columns:minmax(0, 1.3fr) minmax(340px, 0.7fr);align-items:center;gap:clamp(50px,9vw,150px);position:relative}.landing-hero::after{width:520px;height:420px;position:absolute;right:-40px;top:-10px;z-index:-1;background:radial-gradient(circle, rgba(255, 104, 70, 0.15) 0, rgba(255, 104, 70, 0.06) 38%, transparent 72%);content:"";animation:landing-focus 8s ease-in-out infinite alternate}.landing-hero h1{margin-top:24px;font-size:clamp(4.6rem,7.2vw,7.3rem);font-weight:800;line-height:.85}.landing-hero__accent{margin-top:28px !important;color:var(--difflane-text-secondary-on-paper);font-size:clamp(2rem,3.1vw,3.25rem);font-weight:700;letter-spacing:-0.04em}.landing-hero__support{align-self:end;padding-bottom:8px}.landing-hero__support>p{max-width:470px;margin-bottom:44px;color:var(--difflane-text-secondary-on-paper);font-size:clamp(1.25rem,1.7vw,1.55rem);line-height:1.25}.route-preview,.proof-workspace{overflow:hidden;border-radius:var(--difflane-panel-radius);background:var(--difflane-ink-base);color:var(--difflane-text-primary-on-dark);display:grid;grid-template-columns:285px minmax(0, 1fr)}.route-preview{min-height:380px;margin-bottom:40px;box-shadow:0 32px 80px rgba(16,14,12,.12)}.route-preview__reason,.proof-workspace__route{padding:38px 30px;background:var(--difflane-surface-app)}.route-preview__reason h2{margin-top:24px;font-size:1.45rem;font-weight:700}.route-preview__count{margin-top:12px;color:var(--difflane-text-secondary-on-dark);font:500 .72rem var(--difflane-font-mono)}.route-progress{width:100%;height:4px;margin-top:28px;overflow:hidden;border-radius:99px;background:var(--difflane-surface-selected)}.route-progress span{width:58%;height:100%;display:block;border-radius:inherit;background:var(--difflane-accent-primary)}.landing-label--reason{margin-top:46px !important}.route-preview__reason strong,.proof-workspace__route strong{margin-top:22px;display:block;font-size:1rem}.route-preview__reason>p:last-child,.proof-workspace__route>p:not(.landing-label){margin-top:12px;color:var(--difflane-text-secondary-on-dark);font-size:.86rem;line-height:1.35}.code-preview{min-width:0;padding:38px 32px 28px}.code-preview h2,.code-preview h3{overflow:hidden;font:700 clamp(1rem, 1.7vw, 1.55rem)/1.2 var(--difflane-font-mono);letter-spacing:0;text-overflow:ellipsis;white-space:nowrap}.code-preview__meta{padding:18px 0 22px;border-bottom:1px solid var(--difflane-border-subtle);color:var(--difflane-text-secondary-on-dark);font:700 .62rem var(--difflane-font-mono);letter-spacing:.04em}.code-preview__lines{padding-top:20px}.code-preview code{min-width:640px;padding:11px 18px;display:block;color:var(--difflane-text-primary-on-dark);font:500 .75rem/1.4 var(--difflane-font-mono);white-space:pre}.code-preview code span{width:46px;display:inline-block;color:var(--difflane-text-secondary-on-dark)}.code-preview .code-preview__focus{border-left:4px solid var(--difflane-accent-primary);background:var(--difflane-surface-interactive)}.problem-section{min-height:900px;padding:130px 0;position:relative;background:var(--difflane-ink-base);color:var(--difflane-text-primary-on-dark)}.problem-section::before{width:560px;height:560px;position:absolute;right:4%;top:16%;background:radial-gradient(circle, rgba(255, 104, 70, 0.08), transparent 68%);content:"";animation:landing-focus 10s ease-in-out infinite alternate-reverse}.problem-section__grid,.attention-section{display:grid;grid-template-columns:minmax(330px, 0.85fr) minmax(560px, 1.15fr);gap:clamp(70px,9vw,150px)}.problem-section__copy h2,.attention-section h2{margin-top:28px;font-size:clamp(3.6rem,5vw,5.8rem);font-weight:800;line-height:.96}.problem-section__copy>p:last-child,.attention-section__copy>p{max-width:590px;margin-top:28px;color:var(--difflane-text-secondary-on-dark);font-size:1.3rem;line-height:1.25}.ordering-demo{min-width:0;position:relative;z-index:1}.ordering-demo__header{min-height:54px;display:flex;align-items:center;justify-content:space-between;gap:22px}.ordering-demo__header>p,.ordering-demo__mode,.ordering-demo__caption,.ordering-demo__explanation{color:var(--difflane-text-secondary-on-dark);font:700 .66rem/1.3 var(--difflane-font-mono);letter-spacing:.03em}.ordering-toggle{padding:4px;display:grid;grid-template-columns:1fr 1fr;border-radius:10px;background:var(--difflane-surface-app)}.ordering-toggle button{min-width:130px;min-height:40px;border:0;border-radius:8px;background:rgba(0,0,0,0);color:var(--difflane-text-secondary-on-dark);cursor:pointer;font:700 .66rem var(--difflane-font-mono)}.ordering-toggle button[aria-pressed=true]{background:var(--difflane-paper-warm);color:var(--difflane-ink-base)}.ordering-toggle button[data-mode=difflane][aria-pressed=true]{background:var(--difflane-accent-primary)}.ordering-demo__mode{margin-top:8px}.ordering-demo__explanation{min-height:34px;margin-top:8px;color:var(--difflane-text-secondary-on-dark);font-weight:500}.ordering-files{margin:16px 0 0;padding:0;display:grid;gap:16px;list-style:none}.ordering-files li{min-height:70px;padding:0 28px;display:grid;grid-template-columns:minmax(0, 1fr) auto;align-items:center;gap:20px;border-left:4px solid rgba(0,0,0,0);border-radius:10px;background:var(--difflane-surface-app);color:var(--difflane-text-secondary-on-dark);font:500 .78rem var(--difflane-font-mono);transition:transform 220ms ease,background 220ms ease,border-color 220ms ease}.ordering-files li span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ordering-files li.is-prioritized{border-left-color:var(--difflane-accent-primary);background:var(--difflane-surface-interactive);color:var(--difflane-text-primary-on-dark);transform:translateX(-8px)}.ordering-files li.is-deemphasized{border-left-color:var(--difflane-border-subtle);background:rgba(0,0,0,0)}.ordering-demo__caption{margin-top:24px;color:var(--difflane-accent-primary)}.attention-section{min-height:810px;padding:130px 0;align-items:center}.attention-section__copy>p{color:var(--difflane-text-secondary-on-paper)}.attention-section__copy>strong{margin-top:54px;display:block;color:var(--difflane-accent-primary);font:700 .68rem var(--difflane-font-mono);letter-spacing:.04em}.route-groups{margin:0;padding:42px;display:grid;gap:22px;border-radius:var(--difflane-panel-radius);background:var(--difflane-surface-app);list-style:none}.route-groups li{min-height:82px;padding:0 26px;display:grid;grid-template-columns:36px minmax(0, 1fr) auto;align-items:center;gap:20px;border-left:4px solid rgba(0,0,0,0);border-radius:10px;background:var(--difflane-surface-raised);color:var(--difflane-text-secondary-on-dark);font:500 .72rem var(--difflane-font-mono)}.route-groups li strong{font-size:.9rem}.route-groups .route-groups__focus{border-left-color:var(--difflane-accent-primary);background:var(--difflane-surface-interactive);color:var(--difflane-text-primary-on-dark)}.route-groups__focus span:first-child{color:var(--difflane-accent-primary);font-weight:700}.ai-section{padding:140px 0;background:var(--difflane-surface-app);color:var(--difflane-text-primary-on-dark)}.ai-section h2{margin-top:30px;font-size:clamp(3.4rem,5vw,5.4rem);font-weight:800}.ai-section__body{margin-top:86px;padding-bottom:90px;display:grid;grid-template-columns:1fr 1fr;gap:clamp(70px,12vw,190px);border-bottom:4px solid var(--difflane-accent-primary)}.ai-section__body p{color:var(--difflane-text-secondary-on-dark);font-size:1.25rem;line-height:1.35}.proof-section{padding:130px 0}.proof-section>h2{margin-top:28px;font-size:clamp(3.5rem,5vw,5.3rem);font-weight:800;line-height:.98}.proof-section__lede{margin-top:26px !important;color:var(--difflane-text-secondary-on-paper);font-size:1.2rem}.proof-workspace{min-height:510px;margin-top:80px;grid-template-columns:360px minmax(0, 1fr)}.proof-workspace__route{display:flex;flex-direction:column}.proof-workspace__route h3{margin-top:28px;color:var(--difflane-text-primary-on-dark);font:700 .95rem/1.3 var(--difflane-font-mono);letter-spacing:0;overflow-wrap:anywhere}.proof-workspace__progress{margin-top:auto;color:var(--difflane-text-secondary-on-dark);font:700 .62rem var(--difflane-font-mono)}.code-preview--proof{padding:48px 40px}.position-section{min-height:570px;padding:115px 0;display:flex;align-items:center;background:var(--difflane-accent-primary)}.position-section .landing-label{color:var(--difflane-accent-on-primary)}.position-section h2{margin-top:46px;max-width:1150px;font-size:clamp(4rem,6vw,6.5rem);font-weight:800;line-height:.95}.control-section{padding:130px 0 170px}.control-section>h2{margin-top:28px;font-size:clamp(3.6rem,5vw,5.5rem);font-weight:800}.control-principles{margin-top:100px;display:grid;grid-template-columns:repeat(3, 1fr);gap:48px}.control-principles article{padding-top:24px;border-top:1px solid var(--difflane-paper-border)}.control-principles span{color:var(--difflane-accent-primary);font:700 .65rem var(--difflane-font-mono)}.control-principles h3{margin-top:58px;font:700 .78rem var(--difflane-font-mono);letter-spacing:0}.control-principles p{margin-top:24px;color:var(--difflane-text-secondary-on-paper);font-size:1.05rem}.closing-section{min-height:760px;padding:120px 0 0;background:var(--difflane-ink-base);color:var(--difflane-text-primary-on-dark)}.closing-section__grid{min-height:500px;display:grid;grid-template-columns:1fr .8fr;align-items:center;gap:80px}.closing-section h2{margin-top:28px;font-size:clamp(4rem,6vw,6rem);font-weight:800;line-height:.9}.closing-section__grid>div:first-child>p:last-child{max-width:550px;margin-top:34px;color:var(--difflane-text-secondary-on-dark);font-size:1.25rem}.closing-section__status{display:grid;justify-items:start;gap:20px}.closing-section__status p{color:var(--difflane-text-secondary-on-dark);font:700 .62rem var(--difflane-font-mono);letter-spacing:.04em}.landing-footer{min-height:130px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:30px;color:var(--difflane-text-secondary-on-dark);font:700 .62rem var(--difflane-font-mono)}.landing-footer>span:last-child{text-align:right}.landing-footer nav{display:flex;gap:24px}.landing-footer a{color:var(--difflane-text-secondary-on-dark)}.landing-footer a:hover{color:var(--difflane-text-primary-on-dark)}@keyframes landing-focus{from{opacity:.55;transform:translate3d(-2%, 1%, 0) scale(0.96)}to{opacity:1;transform:translate3d(3%, -2%, 0) scale(1.04)}}@media(max-width: 980px){.landing-shell{width:min(100% - 48px,var(--landing-shell))}.landing-hero{grid-template-columns:1fr;gap:48px}.landing-hero__support{max-width:620px}.problem-section__grid,.attention-section{grid-template-columns:1fr;gap:70px}.problem-section{min-height:auto}.route-preview{grid-template-columns:240px minmax(0, 1fr)}.proof-workspace{grid-template-columns:300px minmax(0, 1fr)}}@media(max-width: 720px){.landing-shell{width:min(100% - 32px,var(--landing-shell))}.landing-header{min-height:92px}.landing-header>.landing-cta{display:none}.landing-hero{min-height:590px;padding:54px 0 76px}.landing-hero h1{font-size:clamp(3.8rem,19vw,5.3rem)}.landing-hero__accent{font-size:2rem}.landing-hero__support>p{font-size:1.2rem}.route-preview,.proof-workspace{grid-template-columns:1fr}.route-preview__reason{padding:30px 24px}.code-preview{overflow-x:auto;padding:30px 24px}.problem-section,.attention-section,.ai-section,.proof-section,.control-section{padding-block:88px}.problem-section__grid,.attention-section{grid-template-columns:minmax(0, 1fr);gap:58px}.problem-section__copy h2,.attention-section h2,.proof-section>h2,.control-section>h2{font-size:clamp(3rem,14vw,4.2rem)}.ordering-demo__header{align-items:flex-start;flex-direction:column}.ordering-toggle{width:100%}.ordering-toggle button{min-width:0}.ordering-files li{min-height:88px;padding:16px 18px;grid-template-columns:1fr;gap:8px}.ordering-files li span:last-child{color:var(--difflane-text-secondary-on-dark)}.route-groups{padding:18px}.route-groups li{padding:0 16px;grid-template-columns:26px minmax(0, 1fr)}.route-groups li span:last-child{grid-column:2}.ai-section__body{margin-top:58px;padding-bottom:58px;grid-template-columns:1fr;gap:34px}.proof-workspace{margin-top:54px}.proof-workspace__progress{margin-top:70px}.position-section{min-height:500px}.position-section h2{font-size:clamp(3.6rem,15vw,5rem)}.control-principles{margin-top:68px;grid-template-columns:1fr;gap:46px}.control-principles h3{margin-top:34px}.closing-section{padding-top:88px}.closing-section__grid{min-height:580px;grid-template-columns:1fr;gap:58px}.closing-section h2{font-size:clamp(3.6rem,17vw,5rem)}.landing-footer{min-height:170px;grid-template-columns:1fr 1fr}.landing-footer nav{grid-column:1/-1;grid-row:1}}@media(prefers-reduced-motion: reduce){.landing-page *,.landing-page *::before,.landing-page *::after{scroll-behavior:auto !important;animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}.landing-hero::after,.problem-section::before{opacity:.7;transform:none}}