
:root{--ink:#19313a;--deep:#123b45;--deep2:#0a2c35;--jade:#347e73;--rust:#c56c4b;--cream:#faf8f3;--sand:#f2eee5;--line:#d9dfdc;--white:#fff;--muted:#53656a;--radius:19px;--shadow:0 15px 45px rgba(17,46,53,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:94px}body{margin:0;background:var(--cream);color:var(--ink);font-size:17px;line-height:1.65}body,button,input{font-family:inherit}img{max-width:100%;display:block}a{color:#176457;text-decoration-thickness:1px;text-underline-offset:3px}a:hover{text-decoration-thickness:2px}button{cursor:pointer}strong{font-weight:700}.wrap{width:min(1160px,calc(100% - 48px));margin-inline:auto}.skip{position:absolute;top:-100px;left:16px;background:#fff;color:var(--deep);padding:10px;z-index:10000}.skip:focus{top:10px}.site-header{background:rgba(250,248,243,.98);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1000;backdrop-filter:blur(15px)}.head-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:88px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--deep);min-width:230px}.brand:hover{text-decoration:none}.brand-mark{width:42px;height:42px;background:var(--deep);border-radius:12px;display:flex;gap:4px;align-items:flex-end;justify-content:center;padding:10px}.brand-mark i{width:6px;border-radius:3px;background:#ffdbb1;display:block}.brand-mark i:nth-child(1){height:13px;background:var(--rust)}.brand-mark i:nth-child(2){height:23px;background:#a9d7cc}.brand-mark i:nth-child(3){height:17px;background:#ffdfb8}.brand-text{font-size:15px;font-weight:780;line-height:1.2;letter-spacing:-.02em}.brand-text small{display:block;font-size:11px;letter-spacing:.015em;font-weight:500;color:var(--muted);margin-top:4px}.menu{display:flex;align-items:center;gap:23px}.menu a{color:var(--ink);font-size:13px;line-height:1.2;font-weight:690;text-decoration:none;white-space:nowrap;padding:12px 0;position:relative}.menu a[aria-current="page"]{color:var(--jade)}.menu a[aria-current="page"]:after{content:'';position:absolute;bottom:4px;left:0;right:0;height:2px;background:var(--rust)}.menu a:hover{color:var(--jade)}.mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px 12px;color:var(--deep);font-size:15px;font-weight:700}.notice-line{font-size:12px;background:#e9f0ed;color:#355b5a;text-align:center;padding:6px 15px;border-bottom:1px solid #d9e5e0}.notice-line a{color:#246c62}main{min-height:60vh}.section{padding:86px 0}.section.tight{padding:55px 0}.section.soft{background:#edf2ef}.section.sand{background:var(--sand)}.section.deep{background:var(--deep);color:#fff}.section.deep a{color:#b3e4d7}.eyebrow{display:inline-block;font-size:13px;font-weight:750;letter-spacing:.01em;color:#ae593b;margin-bottom:14px}.deep .eyebrow{color:#eeb89e}h1,h2,h3{line-height:1.14;letter-spacing:-.035em;margin:0 0 18px;font-weight:760}h1{font-size:clamp(43px,5vw,75px)}h2{font-size:clamp(30px,3.4vw,46px)}h3{font-size:clamp(21px,2.1vw,28px);letter-spacing:-.023em}p{margin:0 0 17px}p:last-child{margin-bottom:0}.lead{font-size:clamp(18px,1.9vw,22px);line-height:1.52;color:#3f5960}.deep .lead{color:#d7e5e0}.muted{color:var(--muted)}.caps{text-transform:uppercase;letter-spacing:.07em;font-weight:750;font-size:12px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:10px;min-height:47px;padding:12px 19px;background:var(--rust);color:#fff;text-decoration:none;border-radius:9px;font-size:15px;line-height:1.25;font-weight:750;border:1px solid transparent;transition:transform .18s,background .18s}.btn:hover{background:#9f4f35;transform:translateY(-2px);text-decoration:none}.btn.secondary{background:#fff;color:var(--deep);border-color:#d8e1de}.btn.secondary:hover{background:#f2f6f3}.btn.dark{background:var(--deep);color:#fff}.btn.dark:hover{background:#1d5b61}.btn.ghost{background:transparent;color:var(--deep);border-color:#a7b8b7}.btn.ghost:hover{background:#fff}.btn-row{display:flex;flex-wrap:wrap;gap:11px;margin-top:26px}.home-hero{background:var(--sand);overflow:hidden}.home-hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;min-height:565px;gap:52px;padding-block:76px}.hero-text h1{max-width:620px}.hero-text h1 span{color:var(--jade)}.hero-text p{max-width:550px}.photo-frame{position:relative;padding:20px 0 26px 20px}.photo-frame:before{content:'';position:absolute;inset:55px -30px 0 60px;border-radius:140px 22px 23px 22px;background:#b2cfc3;transform:rotate(-4deg)}.photo-frame img{position:relative;aspect-ratio:1.14/1;object-fit:cover;object-position:center;border-radius:125px 20px 20px 20px;box-shadow:var(--shadow)}.photo-label{position:absolute;z-index:2;bottom:6px;left:-25px;background:var(--cream);padding:15px 20px;box-shadow:var(--shadow);border-left:4px solid var(--rust);max-width:250px;line-height:1.4;font-weight:700;font-size:14px}.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:start}.intro-grid p{max-width:500px}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px;margin-top:35px}.topic{background:#fff;padding:27px 24px 25px;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:var(--ink);display:flex;flex-direction:column;min-height:257px;transition:transform .2s,box-shadow .2s}.topic:hover{transform:translateY(-5px);box-shadow:var(--shadow);text-decoration:none}.topic .symbol{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:#e9f0e9;font-size:23px;color:var(--deep);margin-bottom:28px}.topic:nth-child(2) .symbol{background:#f5e6dc}.topic:nth-child(3) .symbol{background:#e2efec}.topic:nth-child(4) .symbol{background:#efece2}.topic h3{font-size:21px;margin-bottom:9px}.topic p{font-size:14px;line-height:1.55;color:var(--muted)}.topic .jump{font-size:13px;color:#a55033;font-weight:760;margin-top:auto}.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.feature-photo{border-radius:20px;overflow:hidden;position:relative}.feature-photo img{width:100%;height:420px;object-fit:cover}.simple-list{list-style:none;padding:0;margin:24px 0;display:grid;gap:12px}.simple-list li{position:relative;padding-left:31px}.simple-list li:before{content:'✓';position:absolute;left:0;top:0;color:var(--jade);font-weight:bold}.step-list{display:grid;gap:19px;margin:30px 0}.step{display:grid;grid-template-columns:48px 1fr;gap:18px;align-items:start}.step-index{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:#d2e6e0;color:var(--deep);font-weight:800}.step h3{font-size:21px;margin-bottom:7px}.step p{color:var(--muted)}.cta-band{display:flex;gap:40px;justify-content:space-between;align-items:center;background:#dbe9e4;border-radius:21px;padding:36px 42px}.cta-band h2{font-size:clamp(25px,3vw,36px);margin-bottom:10px}.cta-band p{max-width:620px}.cta-band .btn{flex-shrink:0}.page-hero{background:var(--sand);padding:52px 0 55px}.breadcrumb{font-size:13px;display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-bottom:28px;color:#617178}.breadcrumb a{color:#52696c}.page-hero-grid{display:grid;grid-template-columns:1.05fr .75fr;gap:65px;align-items:center}.page-hero h1{font-size:clamp(40px,4.3vw,63px)}.page-hero .hero-photo{width:100%;aspect-ratio:1.35/1;object-fit:cover;border-radius:18px 120px 18px 18px;box-shadow:var(--shadow)}.page-hero .lead{max-width:680px}.content-shell{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:70px;align-items:start}.article-content h2{margin:0 0 20px}.article-content h2:not(:first-child){margin-top:53px}.article-content h3{margin-top:27px}.article-content p{max-width:735px}.article-content ul:not(.simple-list),.article-content ol:not(.simple-list){padding-left:23px;margin:16px 0 24px}.article-content li{margin:9px 0}.aside{position:sticky;top:115px;display:grid;gap:16px}.aside-card{background:#fff;border:1px solid var(--line);padding:25px;border-radius:var(--radius)}.aside-card h3{font-size:20px}.aside-card a{display:block;font-size:14px;margin-top:12px;font-weight:670}.aside-card .note{font-size:14px;color:var(--muted)}.aside-card.tint{background:#e6eee9}.mini-facts{display:grid;grid-template-columns:repeat(3,1fr);border-radius:17px;overflow:hidden;background:#fff;border:1px solid var(--line);margin:28px 0}.mini-fact{padding:24px 24px;border-right:1px solid var(--line)}.mini-fact:last-child{border:0}.mini-fact b{display:block;color:var(--deep);font-size:30px;letter-spacing:-.05em;line-height:1.1}.mini-fact span{font-size:13px;color:var(--muted)}.callout{background:#e8f1ee;border-left:4px solid var(--jade);border-radius:0 12px 12px 0;padding:22px 24px;margin:27px 0}.callout.warn{background:#fbebdf;border-color:var(--rust)}.callout strong{display:block;margin-bottom:6px}.course-figure{display:flex;gap:8px;margin:30px 0 10px}.course-figure .part{padding:22px 18px;border-radius:11px;background:#dcebe7;color:var(--deep)}.course-figure .part.main{flex:6}.course-figure .part.extra{flex:1.8;background:#f1dccc}.course-figure b{font-size:27px;display:block;line-height:1.1}.course-figure small{font-size:13px}.sequence{border-left:2px solid #bbd4cb;margin:24px 0 22px 16px;padding-left:31px;display:grid;gap:23px}.sequence .sequence-row{position:relative}.sequence .sequence-row:before{content:'';position:absolute;left:-40px;top:6px;width:16px;height:16px;background:var(--rust);border:5px solid var(--cream);border-radius:50%;box-shadow:0 0 0 1px #cfded7}.sequence h3{margin:0 0 5px;font-size:20px}.sequence p{margin:0;color:var(--muted)}.faq{display:grid;gap:12px;margin:22px 0 0}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 20px}.faq summary{cursor:pointer;font-weight:730;padding:18px 23px 18px 0;position:relative;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';position:absolute;right:0;font-size:22px;font-weight:500;top:12px;color:var(--jade)}.faq details[open] summary:after{content:'−'}.faq details p,.faq details ul{font-size:15px;color:#52646a;margin:0 0 19px}.info-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.info-card{padding:27px;background:#fff;border:1px solid var(--line);border-radius:15px}.info-card h3{font-size:22px}.info-card p{font-size:15px;color:var(--muted)}.info-card .symbol{display:block;font-size:28px;margin-bottom:23px}.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:45px}.source-list{margin:24px 0 0;display:grid;gap:12px}.source-link{border:1px solid var(--line);background:#fff;border-radius:12px;padding:19px 21px;display:flex;gap:20px;justify-content:space-between;align-items:center;text-decoration:none;color:var(--ink)}.source-link:hover{text-decoration:none;border-color:#a5c0b7;background:#fafffc}.source-link b{display:block;font-size:16px}.source-link small{display:block;color:var(--muted);font-size:13px}.source-link em{font-style:normal;color:#b35e3f;font-weight:800;flex-shrink:0}.table-wrap{overflow-x:auto;margin:24px 0}table{width:100%;border-collapse:collapse;background:#fff;font-size:15px}th,td{padding:14px 17px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}th{background:#e5efe9;color:#214b47}tr:last-child td{border-bottom:none}.footer{background:var(--deep2);color:#d7e5e0;padding:58px 0 21px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:90px}.footer h2{font-size:21px;color:white;margin-bottom:13px}.footer h3{font-size:16px;color:white;margin-bottom:18px}.footer p{font-size:14px;max-width:360px}.footer a{color:#d7e5e0;display:block;text-decoration:none;font-size:14px;margin-bottom:10px}.footer a:hover{text-decoration:underline}.footer-bottom{border-top:1px solid rgba(255,255,255,.2);margin-top:37px;padding-top:20px;font-size:12px;display:flex;justify-content:space-between;gap:20px;color:#b8c8c8}.content-finish{margin-top:60px;padding:27px 30px;border-top:3px solid #bdd5cc;background:#fff;border-radius:0 0 12px 12px}.content-finish h2{font-size:26px!important;margin:0 0 13px!important}.content-finish p{font-size:15px}.jump-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}.jump-links a{font-size:13px;padding:7px 12px;border:1px solid #adc5bd;border-radius:99px;text-decoration:none;color:var(--deep)}.jump-links a:hover{background:#e4f0ea}.icon-bullet{font-size:21px;color:var(--jade);font-weight:800}.anchor-heading{scroll-margin-top:118px}.archive-note{font-size:13px;color:#617178}.focus-outline:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #d8774a;outline-offset:4px}
@media(max-width:1100px){.menu{gap:14px}.menu a{font-size:12px}.brand{min-width:206px}.content-shell{gap:40px}.home-hero .wrap{gap:35px}.footer-grid{gap:50px}}
@media(max-width:870px){.head-inner{min-height:72px;flex-wrap:wrap}.mobile-toggle{display:block}.menu{display:none;flex-direction:column;align-items:stretch;width:100%;padding:0 0 17px;gap:0}.menu[data-open="true"]{display:flex}.menu a{padding:13px 4px;font-size:16px;border-top:1px solid #e5e8e4}.menu a[aria-current="page"]:after{left:4px;right:auto;width:45px;bottom:4px}.home-hero .wrap{grid-template-columns:1fr;gap:25px;min-height:unset;padding-block:53px 66px}.hero-text h1{max-width:760px}.photo-frame{max-width:700px;width:90%;margin:auto}.topic-grid{grid-template-columns:repeat(2,1fr)}.split-feature,.intro-grid,.page-hero-grid{grid-template-columns:1fr;gap:30px}.page-hero-grid .hero-photo{max-height:410px;aspect-ratio:2/1;order:-1}.page-hero{padding:32px 0 50px}.content-shell{grid-template-columns:1fr}.aside{position:static;grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.2fr 1fr;gap:34px}.footer-grid>div:last-child{grid-column:span 2}.info-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.wrap{width:min(100% - 34px,1160px)}.section{padding:58px 0}.section.tight{padding:42px 0}.home-hero .wrap{padding:42px 0 54px}.home-hero h1{font-size:43px}.photo-frame{padding:5px 0 24px 0;width:94%;margin:0}.photo-frame:before{inset:25px -13px 3px 23px}.photo-frame img{border-radius:82px 16px 16px 16px;aspect-ratio:1.23/1}.photo-label{left:0;bottom:0;font-size:12px;padding:10px 13px;max-width:205px}.topic-grid,.info-cards,.two-cols{grid-template-columns:1fr}.topic{min-height:0;padding:22px}.topic .symbol{margin-bottom:17px}.split-feature{gap:24px}.feature-photo img{height:270px}.cta-band{display:block;padding:26px}.cta-band .btn{margin-top:22px}.page-hero h1{font-size:38px}.page-hero-grid{gap:25px}.page-hero-grid .hero-photo{aspect-ratio:1.7/1;border-radius:13px 75px 13px 13px}.mini-facts{grid-template-columns:1fr}.mini-fact{border-right:0;border-bottom:1px solid var(--line);padding:17px 22px}.mini-fact:last-child{border:0}.course-figure{display:grid;grid-template-columns:2fr 1fr}.course-figure .part{padding:18px 12px}.course-figure b{font-size:24px}.aside{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:28px}.footer-grid>div:last-child{grid-column:span 1}.footer-bottom{flex-direction:column;gap:5px}.btn-row{flex-direction:column;align-items:stretch}.btn-row .btn{width:100%}table{font-size:14px}th,td{padding:12px}.section.deep .wrap{width:min(100% - 34px,1160px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
