:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--navy-950:#04132a;--navy-900:#071a33;--navy-800:#0d2647;--navy-700:#14345e;--navy-600:#1d4478;--ink:#0b1a2b;--ink-soft:#41546b;--muted:#6b7c92;--line:#dde5f0;--line-strong:#c3d1e3;--surface:#fff;--surface-2:#f4f8fd;--page:#eef3fa;--accent:#2b6cff;--accent-strong:#1c50d8;--accent-soft:#e7efff;--radius-sm:10px;--radius:14px;--radius-lg:20px;--radius-pill:999px;--shadow-sm:0 1px 2px #071a330f, 0 1px 3px #071a330d;--shadow-md:0 10px 24px -12px #071a3338, 0 2px 6px #071a330d;--shadow-lg:0 26px 50px -24px #071a3357;--font-sans:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--wrap:1140px;--header-h:68px;--ease:cubic-bezier(.22, .61, .36, 1)}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{background:var(--surface);color:var(--ink);font-family:var(--font-sans);letter-spacing:.005em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;margin:0;font-size:16px;line-height:1.6}#root{flex-direction:column;min-height:100svh;display:flex}img,svg{max-width:100%;display:block}h1,h2,h3{color:var(--navy-900);letter-spacing:-.02em;text-wrap:balance;margin:0;line-height:1.15}h1{letter-spacing:-.032em;font-size:clamp(2.15rem,1.35rem + 3.1vw,3.5rem);font-weight:700}h2{font-size:clamp(1.45rem,1.2rem + 1vw,1.95rem);font-weight:700}h3{font-size:1.075rem;font-weight:640}p,ul{margin:0}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}::selection{background:var(--accent-soft)}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}.skip-link{z-index:100;border-radius:var(--radius-sm);background:var(--surface);color:var(--navy-900);box-shadow:var(--shadow-md);padding:10px 16px;font-weight:600;text-decoration:none;position:absolute;top:10px;left:-9999px}.skip-link:focus{left:16px}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}html{scroll-padding-top:calc(var(--header-h) + 16px)}.btn{border-radius:var(--radius-pill);white-space:nowrap;transition:transform .16s var(--ease), background .2s, border-color .2s, color .2s, box-shadow .22s;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:12px 20px;font-size:.95rem;font-weight:620;line-height:1.2;text-decoration:none;display:inline-flex}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn--accent{background:linear-gradient(180deg, #3b79ff, var(--accent));color:#fff;box-shadow:0 12px 22px -14px #2b6cfff2}.btn--accent:hover{background:linear-gradient(180deg, #4a83ff, var(--accent-strong));box-shadow:0 16px 26px -14px #1c50d8f2}.btn--ghost{background:var(--surface);border-color:var(--line-strong);color:var(--navy-800)}.btn--ghost:hover{border-color:var(--navy-600);box-shadow:var(--shadow-sm)}.btn--light{color:var(--navy-900);background:#fff}.btn--light:hover{box-shadow:0 14px 26px -16px #0009}.btn--sm{padding:9px 16px;font-size:.9rem}.btn[disabled]{opacity:.55;cursor:not-allowed;box-shadow:none;transform:none}.icon{flex:none;width:17px;height:17px}.badge{border-radius:var(--radius-pill);background:var(--accent-soft);color:var(--accent-strong);letter-spacing:.09em;text-transform:uppercase;align-items:center;gap:6px;padding:3px 9px;font-size:.68rem;font-weight:800;display:inline-flex}.badge--soon{color:#8a6100;background:#fff3d6}.badge--onAccent{color:#fff;background:#ffffff3d}.chip{border-radius:var(--radius-pill);background:var(--accent-soft);color:var(--accent-strong);letter-spacing:.09em;text-transform:uppercase;align-items:center;padding:5px 12px;font-size:.72rem;font-weight:760;display:inline-flex}.chip--onDark{color:#fff;background:#ffffff29}.site-header{z-index:50;background:linear-gradient(180deg, var(--navy-900), var(--navy-800));border-bottom:1px solid #ffffff17;position:sticky;top:0}.site-header__inner{height:var(--header-h);justify-content:space-between;align-items:center;gap:24px;display:flex;position:relative}.brand{color:#fff;letter-spacing:-.012em;align-items:center;gap:10px;font-size:1.06rem;font-weight:660;text-decoration:none;display:inline-flex}.brand__mark{background:linear-gradient(145deg, #4a83ff, var(--accent-strong));color:#fff;border-radius:10px;place-items:center;width:33px;height:33px;display:grid;box-shadow:0 8px 16px -10px #2b6cff}.brand__mark svg{width:20px;height:20px}.site-nav__list{align-items:center;gap:2px;padding:0;list-style:none;display:flex}.site-nav__link{border-radius:var(--radius-sm);color:#ffffffd1;padding:9px 13px;font-size:.93rem;font-weight:560;text-decoration:none;transition:background .18s,color .18s;display:block}.site-nav__link:hover{color:#fff;background:#ffffff1a}.site-nav__cta{margin-left:10px}.nav-toggle{border-radius:var(--radius-sm);color:#fff;background:#ffffff14;border:1px solid #fff3;place-items:center;width:42px;height:42px;display:none}.nav-toggle:hover{background:#ffffff29}.nav-toggle svg{width:22px;height:22px}.hero{background:linear-gradient(180deg, #fff 0%, var(--surface-2) 100%);border-bottom:1px solid var(--line)}.hero__inner{grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);align-items:center;gap:56px;padding-top:74px;padding-bottom:86px;display:grid}.eyebrow{color:var(--accent-strong);letter-spacing:.15em;text-transform:uppercase;font-size:.75rem;font-weight:800}.hero__title{margin-top:14px}.lede{max-width:46ch;color:var(--ink-soft);margin-top:18px;font-size:clamp(1.04rem,1rem + .34vw,1.2rem);line-height:1.6}.hero__actions{flex-wrap:wrap;gap:12px;margin-top:30px;display:flex}.hero__meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px;font-size:.88rem;display:flex}.hero__meta-dots{align-items:center;gap:7px;padding:0;list-style:none;display:inline-flex}.hero__meta-dots li{color:var(--navy-700);align-items:center;gap:7px;font-weight:620;display:inline-flex}.hero__meta-dots li+li:before{content:"";background:var(--line-strong);border-radius:50%;width:4px;height:4px}.hero__art{justify-self:end;width:100%;max-width:460px}.hero__art svg{width:100%;height:auto}.section{padding:64px 0}.section--alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section__head{max-width:62ch;margin-bottom:26px}.section__title{margin-top:12px}.section__lede{color:var(--ink-soft);margin-top:12px}.card-grid{grid-template-columns:repeat(auto-fit,minmax(272px,1fr));align-items:stretch;gap:20px;display:grid}.card{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-sm);transition:transform .2s var(--ease), box-shadow .24s, border-color .24s;flex-direction:column;gap:12px;padding:22px;display:flex;position:relative;overflow:hidden}.card:after{content:"";background:linear-gradient(90deg, var(--accent), #7aa2ff);opacity:0;height:3px;transition:opacity .24s;position:absolute;inset:0 0 auto}.card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md);transform:translateY(-3px)}.card:hover:after{opacity:1}.card__title{margin-top:4px}.card__desc{color:var(--ink-soft);font-size:.95rem}.card__foot{justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:12px;display:flex}.card__hint{color:var(--muted);font-size:.82rem}.card__explore{border:1px solid var(--line-strong);border-radius:var(--radius-pill);color:var(--navy-800);white-space:nowrap;background:0 0;align-items:center;gap:7px;padding:9px 16px;font-size:.9rem;font-weight:620;transition:background .2s,border-color .2s,color .2s;display:inline-flex}.card__explore:hover,.card__explore[aria-expanded=true]{background:var(--navy-900);border-color:var(--navy-900);color:#fff}.detail{border-radius:var(--radius-lg);background:linear-gradient(150deg, var(--navy-900), var(--navy-700));color:#e9f0fa;box-shadow:var(--shadow-lg);animation:detail-rise .28s var(--ease) both;margin-top:26px;padding:28px}@keyframes detail-rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.detail__head{justify-content:space-between;align-items:center;gap:16px;display:flex}.detail__title{color:#fff;margin-top:16px}.detail__desc{color:#e9f0fadb;max-width:70ch;margin-top:10px}.detail__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px;display:grid}.detail__block{border-radius:var(--radius);background:#ffffff12;border:1px solid #ffffff21;padding:16px}.detail__block-title{color:#fff;font-size:.95rem}.placeholder{color:#e9f0fab8;margin-top:10px;font-size:.92rem}.detail__foot{flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;display:flex}.detail__foot-note{color:#e9f0faa8;font-size:.85rem}.icon-btn{border-radius:var(--radius-sm);color:#fff;background:#ffffff1a;border:1px solid #ffffff2e;place-items:center;width:38px;height:38px;transition:background .2s;display:grid}.icon-btn:hover{background:#ffffff38}.icon-btn svg{width:19px;height:19px}.citations{gap:8px;margin-top:12px;padding:0;list-style:none;display:grid}.citations__empty{border-radius:var(--radius-sm);color:#e9f0fabd;border:1px dashed #ffffff4d;padding:12px;font-size:.88rem}.citations__empty--light{border-color:var(--line-strong);color:var(--muted)}.filters{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:24px;display:flex}.filter-list{flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none;display:flex}.filter-chip{border:1px solid var(--line-strong);border-radius:var(--radius-pill);background:var(--surface);color:var(--navy-800);padding:9px 16px;font-size:.9rem;font-weight:600;transition:background .18s,border-color .18s,color .18s}.filter-chip:hover{border-color:var(--navy-600);background:var(--surface-2)}.filter-chip[aria-pressed=true]{background:var(--navy-900);border-color:var(--navy-900);color:#fff}.filters__note{color:var(--muted);flex-basis:100%;margin-top:2px;font-size:.85rem}.steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:26px 0 0;padding:0;list-style:none;display:grid}.step{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm);padding:20px}.step__num{background:var(--accent-soft);width:30px;height:30px;color:var(--accent-strong);border-radius:50%;place-items:center;margin-bottom:12px;font-size:.85rem;font-weight:780;display:grid}.step__title{margin-bottom:6px}.step__copy{color:var(--ink-soft);font-size:.92rem}.step-panel{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-sm);flex-wrap:wrap;align-items:center;gap:16px;margin-top:22px;padding:20px;display:flex}.step-panel__copy{flex:320px}.tutor__panel{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-md);padding:24px}.tutor__row{align-items:flex-start;gap:12px;display:flex}.tutor__input{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface-2);resize:vertical;flex:auto;width:100%;min-height:96px;padding:13px 15px}.tutor__input:disabled{color:var(--muted);cursor:not-allowed;background:#f0f3f8}.tutor__citations{border-top:1px solid var(--line);margin-top:22px;padding-top:20px}.tutor__citation-title{font-size:.95rem}.note{color:var(--muted);font-size:.86rem}.note--warn{border-radius:var(--radius);color:#7a5a12;background:#fff8e6;border:1px solid #f2d79b;margin-top:16px;padding:13px 15px;font-size:.88rem}.site-footer{background:var(--navy-950);color:#e9f0fab3;margin-top:auto;padding:44px 0 34px}.site-footer__top{border-bottom:1px solid #ffffff1a;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;padding-bottom:22px;display:flex}.brand--footer{color:#fff;font-size:1rem}.site-footer__links{flex-wrap:wrap;gap:8px 20px;padding:0;list-style:none;display:flex}.site-footer__links a{color:#e9f0fad1;font-size:.92rem;text-decoration:none}.site-footer__links a:hover{color:#fff;text-underline-offset:3px;text-decoration:underline}.site-footer__note{max-width:78ch;margin-top:20px;font-size:.85rem;line-height:1.65}@media (width<=960px){.hero__inner{grid-template-columns:minmax(0,1fr);gap:40px;padding-top:58px;padding-bottom:66px}.hero__art{justify-self:stretch;max-width:520px}.detail__grid,.steps{grid-template-columns:minmax(0,1fr)}}@media (width<=900px){.nav-toggle{display:grid}.site-nav{inset:var(--header-h) 0 auto 0;background:var(--navy-900);border-bottom:1px solid #ffffff1f;padding:10px 24px 22px;position:absolute;box-shadow:0 22px 34px -22px #000c}.site-nav:not(.is-open){display:none}.site-nav__list{flex-direction:column;align-items:stretch;gap:2px}.site-nav__link{padding:13px 10px;font-size:1rem}.site-nav__cta{margin:12px 0 0}}@media (width<=720px){.section{padding:48px 0}.tutor__row{flex-direction:column;align-items:stretch}.tutor__row .btn{width:100%}.detail{padding:22px}}.ai-tutor__hint{margin-top:12px}.tutor__row .btn svg{flex:none;width:17px;height:17px}.tutor__row .btn{min-height:44px}.ai-response{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2);margin-top:22px;padding:20px}.ai-response:empty{background:0 0;border-width:0;margin-top:0;padding:0}.ai-response__title{margin-bottom:8px}.ai-response__body{max-width:72ch;color:var(--ink);white-space:pre-wrap;overflow-wrap:anywhere}.ai-response__note{border-top:1px solid var(--line);margin-top:16px;padding-top:14px}.ai-error{border-radius:var(--radius);color:#8f1d12;background:#fdf1f0;border:1px solid #f3c3bd;margin-top:16px;padding:13px 15px;font-size:.9rem}.btn.is-thinking[disabled]{opacity:1;cursor:progress;box-shadow:0 12px 22px -14px #2b6cfff2}.thinking{align-items:center;gap:6px;height:1em;display:inline-flex}.thinking__dot{background:currentColor;border-radius:50%;width:7px;height:7px;animation:1.15s cubic-bezier(.36,.07,.19,.97) infinite thinking-bounce}.thinking__dot:nth-child(2){animation-delay:.16s}.thinking__dot:nth-child(3){animation-delay:.32s}@keyframes thinking-bounce{0%,70%,to{opacity:.45;transform:translateY(0)scale(.9)}35%{opacity:1;transform:translateY(-5px)scale(1.05)}}.discover-more{justify-content:center;margin-top:32px;display:flex}.discover-more .btn{min-width:180px}.discover-more .btn:disabled{opacity:.6;cursor:not-allowed}