@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-ext-wght-normal.BOeWTOD4.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-wght-normal.DqGufNeO.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-ext-wght-normal.DlzME5K_.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-wght-normal.CkhJZR-_.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-vietnamese-wght-normal.CBcvBZtf.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-ext-wght-normal.DO1Apj_S.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-wght-normal.Dx4kXJAl.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-cyrillic-ext-wght-normal.DHTKMUil.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-cyrillic-wght-normal.B1g8a0vD.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-greek-wght-normal.BpXpdlRW.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-vietnamese-wght-normal.BsaNuasd.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-latin-ext-wght-normal.BVZ5su8S.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(/_astro/source-serif-4-latin-wght-normal.DMe4EKeb.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--navy-900:#071a33;--navy-800:#0b2545;--navy-700:#13315c;--navy-600:#1d4373;--teal-700:#0b6e69;--teal-600:#0e8a83;--teal-500:#14a89e;--teal-100:#d8f2ef;--teal-50:#eef9f8;--ink:#16202e;--ink-soft:#4a5668;--line:#dde4ec;--bg:#fff;--bg-soft:#f4f7fa;--amber-50:#fff8e6;--amber-600:#9a6700;--radius:14px;--radius-sm:8px;--shadow:0 1px 2px #0b25450f, 0 8px 24px #0b254514;--max:1180px;--prose:720px;--serif:"Source Serif 4 Variable", Georgia, "Times New Roman", serif;--sans:"Inter Variable", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--sans);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0;font-size:17px;line-height:1.65}img,svg{max-width:100%;height:auto}a{color:var(--teal-700);text-underline-offset:3px}a:hover{color:var(--navy-700)}h1,h2,h3,h4{font-family:var(--serif);color:var(--navy-800);letter-spacing:-.01em;margin:0 0 .5em;font-weight:600;line-height:1.2}h1{font-size:clamp(2rem,4.5vw,3.1rem)}h2{font-size:clamp(1.5rem,3vw,2rem)}h3{font-size:1.25rem}p{margin:0 0 1em}:focus-visible{outline:3px solid var(--teal-500);outline-offset:2px}.skip-link{background:var(--navy-800);color:#fff;z-index:100;padding:.6rem 1rem;position:absolute;top:0;left:-9999px}.skip-link:focus{left:1rem}.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}.section{padding:clamp(48px,8vw,88px) 0}.section--soft{background:var(--bg-soft)}.section-head{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:2rem;display:flex}.section-head p{color:var(--ink-soft);max-width:60ch;margin:0}.eyebrow{font-family:var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--teal-700);margin-bottom:.75rem;font-size:.78rem;font-weight:600;display:inline-block}.lede{color:var(--ink-soft);max-width:62ch;font-size:1.2rem}.btn{font:600 .98rem/1 var(--sans);cursor:pointer;border:2px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:.5rem;padding:.95rem 1.4rem;text-decoration:none;transition:background .15s,color .15s,border-color .15s;display:inline-flex}.btn--primary{background:var(--teal-600);color:#fff}.btn--primary:hover{background:var(--teal-700);color:#fff}.btn--ghost{color:var(--navy-800);background:0 0;border-color:currentColor}.btn--ghost:hover{background:var(--navy-800);border-color:var(--navy-800);color:#fff}.btn--light{color:#fff;border-color:#ffffff8c}.btn--light:hover{color:var(--navy-800);background:#fff}.site-header{z-index:50;backdrop-filter:saturate(180%)blur(10px);border-bottom:1px solid var(--line);background:#fffffff0;position:sticky;top:0}.site-header__inner{justify-content:space-between;align-items:center;gap:1rem;min-height:70px;display:flex}.brand{color:var(--navy-800);font-family:var(--serif);letter-spacing:-.01em;align-items:center;gap:.6rem;font-size:1.3rem;font-weight:700;text-decoration:none;display:inline-flex}.brand:hover{color:var(--navy-800)}.brand-mark{background:#fff;border-radius:10px;flex:none;width:46px;height:46px}.site-footer .brand-mark{width:52px;height:52px;padding:3px}.nav{align-items:center;gap:.25rem;display:flex}.nav a{color:var(--ink);border-radius:8px;padding:.5rem .7rem;font-size:.95rem;font-weight:500;text-decoration:none}.nav a:hover,.nav a[aria-current=page]{color:var(--teal-700);background:var(--teal-50)}.nav .btn{margin-left:.5rem;padding:.7rem 1.1rem;font-size:.92rem}.nav .btn:hover{color:#fff;background:var(--teal-700)}.nav-menu{position:relative}.nav-menu summary{cursor:pointer;border-radius:8px;align-items:center;gap:.35rem;padding:.5rem .7rem;font-size:.95rem;font-weight:500;list-style:none;display:inline-flex}.nav-menu summary::-webkit-details-marker{display:none}.nav-menu summary:after{content:"";border-bottom:2px solid;border-right:2px solid;width:7px;height:7px;transition:transform .15s;transform:translateY(-2px)rotate(45deg)}.nav-menu[open] summary:after{transform:translateY(1px)rotate(-135deg)}.nav-menu summary:hover,.nav-menu[open] summary,.nav-menu summary[aria-current=page]{color:var(--teal-700);background:var(--teal-50)}.nav-menu ul{border:1px solid var(--line);min-width:300px;box-shadow:var(--shadow);background:#fff;border-radius:12px;gap:2px;margin:0;padding:.5rem;list-style:none;display:grid;position:absolute;top:calc(100% + 8px);left:0}.nav-menu ul a{padding:.6rem .75rem;display:block}.nav-menu__all{border-top:1px solid var(--line);margin-top:.25rem;padding-top:.25rem}.nav-toggle{border:1px solid var(--line);cursor:pointer;color:var(--navy-800);background:0 0;border-radius:10px;padding:.55rem;display:none}@media (width<=960px){.nav-toggle{display:inline-flex}.nav{border-bottom:1px solid var(--line);box-shadow:var(--shadow);background:#fff;flex-direction:column;align-items:stretch;padding:.75rem 20px 1.25rem;display:none;position:absolute;top:70px;left:0;right:0}.nav.is-open{display:flex}.nav a{padding:.8rem .6rem}.nav-menu summary{justify-content:space-between;padding:.8rem .6rem;display:flex}.nav-menu ul{min-width:0;box-shadow:none;border:0;border-left:2px solid var(--teal-100);border-radius:0;margin:0 0 .5rem .6rem;padding:0 0 0 .5rem;position:static}.nav .btn{margin:.5rem 0 0}}.hero{color:#fff;background:radial-gradient(900px 500px at 85% -10%, #14a89e59, transparent 60%), radial-gradient(700px 400px at -10% 110%, #1d4373cc, transparent 60%), var(--navy-800);position:relative;overflow:hidden}.hero__inner{grid-template-columns:1.25fr 1fr;align-items:center;gap:3rem;padding:clamp(56px,9vw,110px) 20px;display:grid}.hero h1{color:#fff;font-size:clamp(2.2rem,5vw,3.6rem)}.hero .eyebrow{color:var(--teal-100)}.hero .lede{color:#ffffffd1}.hero__actions{flex-wrap:wrap;gap:.75rem;margin-top:2rem;display:flex}.hero__panel{background:#ffffff0f;border:1px solid #ffffff24;border-radius:20px;padding:1.75rem}.hero__panel h2{color:#fff;margin-bottom:1rem;font-size:1.15rem}.pillars{gap:1rem;margin:0;padding:0;list-style:none;display:grid}.pillars li{color:#ffffffd9;grid-template-columns:36px 1fr;gap:.85rem;font-size:.95rem;line-height:1.5;display:grid}.pillars strong{color:#fff;display:block}.pillars .icon{width:36px;height:36px;color:var(--teal-100);background:#14a89e38;border-radius:10px;place-items:center;display:grid}@media (width<=880px){.hero__inner{grid-template-columns:1fr}}.grid{gap:1.5rem;display:grid}.grid--3{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.grid--topics{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;padding:1.6rem;transition:box-shadow .2s,transform .2s,border-color .2s;display:flex;position:relative}.card:hover{box-shadow:var(--shadow);border-color:#c9d5e2;transform:translateY(-2px)}.card h3{margin-bottom:.6rem;font-size:1.3rem}.card h3 a{color:var(--navy-800);text-decoration:none}.card h3 a:after{content:"";position:absolute;inset:0}.card p{color:var(--ink-soft);font-size:.97rem}.card__meta{color:var(--ink-soft);flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:auto;font-size:.85rem;display:flex}.tag{letter-spacing:.02em;background:var(--teal-50);color:var(--teal-700);border-radius:999px;align-items:center;padding:.3rem .6rem;font-size:.75rem;font-weight:600;text-decoration:none;display:inline-flex}.tag--navy{color:var(--navy-700);background:#e8eef6}.tag--muted{background:var(--bg-soft);color:var(--ink-soft)}.topic-card{border-top:4px solid var(--teal-500)}.topic-card .status{margin-top:auto;padding-top:.75rem;font-size:.85rem;font-weight:600}.status--live{color:var(--teal-700)}.status--soon{color:var(--ink-soft)}.callout{border-radius:var(--radius);background:var(--teal-50);border:1px solid var(--teal-100);padding:1.5rem 1.6rem}.callout--note{background:var(--amber-50);border-color:#f2dfae}.callout h2,.callout h3{font-size:1.15rem}.callout p:last-child{margin-bottom:0}.signup{background:var(--navy-800);color:#fff;border-radius:20px;grid-template-columns:1fr 1.1fr;align-items:center;gap:2rem;padding:clamp(1.75rem,4vw,3rem);display:grid}.signup h2{color:#fff}.signup p{color:#fffc}.signup--compact{grid-template-columns:1fr;gap:1rem;padding:1.75rem}.signup--compact h2{margin-bottom:.25rem;font-size:1.35rem}@media (width<=820px){.signup{grid-template-columns:1fr}}.form{gap:.85rem;display:grid}.form__row{grid-template-columns:1fr 1fr;gap:.75rem;display:grid}@media (width<=560px){.form__row{grid-template-columns:1fr}}.form label.field{gap:.3rem;font-size:.85rem;font-weight:600;display:grid}.form input[type=text],.form input[type=email]{width:100%;font:inherit;color:#fff;background:#ffffff14;border:1px solid #ffffff40;border-radius:10px;padding:.85rem 1rem;font-size:1rem}.form input::placeholder{color:#ffffff8c}.form .consent{color:#ffffffd1;grid-template-columns:20px 1fr;gap:.6rem;font-size:.85rem;line-height:1.5;display:grid}.form .consent input{width:18px;height:18px;accent-color:var(--teal-500);margin-top:2px}.form .consent a{color:var(--teal-100)}.form .hp{width:1px;height:1px;position:absolute;left:-10000px;overflow:hidden}.form__status{min-height:1.4em;margin:0;font-size:.92rem}.form__status.is-error{color:#ffd2cc}.form__status.is-success{color:var(--teal-100)}.form--light input[type=text],.form--light input[type=email]{border-color:var(--line);color:var(--ink);background:#fff}.form--light input::placeholder{color:#8a96a8}.form--light .consent{color:var(--ink-soft)}.form--light .consent a{color:var(--teal-700)}.form--light .form__status.is-error{color:#b42318}.form--light .form__status.is-success{color:var(--teal-700)}.page-header{background:linear-gradient(180deg, var(--bg-soft), #fff);border-bottom:1px solid var(--line);padding:clamp(40px,7vw,72px) 0 clamp(32px,5vw,48px)}.page-header .lede{margin-bottom:0}.breadcrumbs{color:var(--ink-soft);margin-bottom:1rem;font-size:.85rem}.breadcrumbs a{color:var(--ink-soft)}.prose{max-width:var(--prose);margin:0 auto;font-size:1.07rem}.prose h2{margin-top:2.2em;font-size:1.65rem}.prose h3{margin-top:1.8em}.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em}.prose li{margin-bottom:.4em}.prose blockquote{border-left:4px solid var(--teal-500);color:var(--ink-soft);background:var(--bg-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:1.5em 0;padding:.5em 1.25em}.prose table{border-collapse:collapse;width:100%;margin:1.5em 0;font-size:.93rem;display:block;overflow-x:auto}.prose th,.prose td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:.7rem .8rem}.prose th{background:var(--navy-800);color:#fff;font-weight:600}.prose tr:nth-child(2n) td{background:var(--bg-soft)}.prose hr{border:0;border-top:1px solid var(--line);margin:2.5em 0}.prose h2#references+ol,.prose h2#references~ol{color:var(--ink-soft);word-break:break-word;font-size:.9rem}.article-header{max-width:var(--prose);margin:0 auto}.article-meta{color:var(--ink-soft);flex-wrap:wrap;gap:.4rem 1.2rem;margin-top:1.25rem;font-size:.92rem;display:flex}.evidence-box{max-width:var(--prose);background:var(--teal-50);border:1px solid var(--teal-100);border-radius:var(--radius);grid-template-columns:auto 1fr;align-items:start;gap:1.25rem;margin:2rem auto 2.5rem;padding:1.4rem 1.5rem;display:grid}.evidence-box h2{font-family:var(--sans);text-transform:uppercase;letter-spacing:.1em;color:var(--teal-700);margin:0 0 .35rem;font-size:.78rem}.evidence-box p{margin:0}.evidence-level{color:var(--navy-800);border:1px solid var(--teal-100);text-align:center;background:#fff;border-radius:10px;min-width:130px;padding:.6rem .8rem;font-size:.95rem;font-weight:700}.evidence-level small{text-transform:uppercase;letter-spacing:.08em;color:var(--ink-soft);font-size:.7rem;font-weight:500;display:block}@media (width<=560px){.evidence-box{grid-template-columns:1fr}}.article-footer{max-width:var(--prose);gap:1.5rem;margin:3rem auto 0;display:grid}.site-footer{background:var(--navy-900);color:#ffffffb8;padding:64px 0 32px;font-size:.93rem}.site-footer a{color:#ffffffd9;text-decoration:none}.site-footer a:hover{color:#fff;text-decoration:underline}.site-footer .brand{color:#fff}.footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:2.5rem;display:grid}.footer-grid h2{font-family:var(--sans);letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:1rem;font-size:.78rem}.footer-grid ul{gap:.55rem;margin:0;padding:0;list-style:none;display:grid}.footer-legal{color:#ffffff94;border-top:1px solid #ffffff1f;margin-top:3rem;padding-top:1.5rem;font-size:.82rem;line-height:1.6}@media (width<=760px){.footer-grid{grid-template-columns:1fr}}.split{grid-template-columns:1fr 1fr;align-items:center;gap:3rem;display:grid}@media (width<=820px){.split{grid-template-columns:1fr}}.checklist{gap:.7rem;margin:0 0 1.5rem;padding:0;list-style:none;display:grid}.checklist li{grid-template-columns:24px 1fr;gap:.6rem;display:grid}.checklist li:before{content:"";background:var(--teal-500) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='white' stroke-width='2.5'%3E%3Cpath d='M5 10.5l3.2 3L15 7'/%3E%3C/svg%3E") center/14px no-repeat;border-radius:50%;width:20px;height:20px;margin-top:4px}.book-cover{aspect-ratio:2/3;background:linear-gradient(90deg, #00000040 0 10px, transparent 10px), radial-gradient(400px 300px at 80% 0%, #14a89e73, transparent 60%), var(--navy-800);color:#fff;border-radius:6px 14px 14px 6px;flex-direction:column;justify-content:space-between;max-width:320px;margin:0 auto;padding:2.25rem 1.75rem 1.75rem 2.25rem;display:flex;box-shadow:0 30px 60px #071a3359}.book-cover .title{font-family:var(--serif);font-size:2.1rem;font-weight:700;line-height:1.1}.book-cover .rule{background:var(--teal-500);width:56px;height:4px;margin:1.25rem 0}.book-cover .author{letter-spacing:.15em;text-transform:uppercase;color:var(--teal-100);font-size:.85rem}.book-art{border-radius:4px;width:100%;max-width:340px;height:auto;margin:0 auto;display:block;box-shadow:0 30px 60px #071a3359}.book-3d{width:100%;max-width:440px;height:auto;margin:0 auto;display:block}.section--soft .book-3d{mix-blend-mode:multiply}.empty-state{border-radius:var(--radius);text-align:center;color:var(--ink-soft);background:var(--bg-soft);border:1px dashed #c9d5e2;padding:2rem}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;overflow:hidden;position:absolute!important}