:root{--bg:#f2f6f6;--ink:#10303c;--muted:#4a6670;--lake:#0e3b4c;--card:#fff;--line:#d3e0e2;--sun:#f2b705;--green:#3c7a4f;--blue:#0e5f8a;--warn:#fff6d9;--warnline:#e6c453}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b1d25;--ink:#e6f0f2;--muted:#9bb4bb;--lake:#06141a;--card:#12303b;--line:#24444f;--green:#8fd1a4;--blue:#7fc4e8;--warn:#2b2a14;--warnline:#6b5d1c}}
*{box-sizing:border-box}
html{scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.65 "Source Serif 4",Georgia,serif;padding-bottom:env(safe-area-inset-bottom,0)}
h1,h2,h3,nav,.tag,.btn,.crumb,.meta{font-family:"Bricolage Grotesque","Helvetica Neue",Arial,sans-serif}
a{color:inherit}
img{max-width:100%;height:auto}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--sun);color:#10303c;padding:8px 14px;z-index:99}.skip:focus{left:8px;top:8px}
header.top{background:var(--lake);color:#fff}
header.top nav{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 18px;padding:14px 0;font-weight:700}
header.top nav .logo{margin:0;font-size:19px;font-weight:800;color:#fff;text-decoration:none}
header.top nav div{display:flex;flex-wrap:wrap;gap:4px 18px}
header.top nav div a{color:#fff;text-decoration:none;font-weight:500;font-size:15px;padding:4px 0}
header.top nav div a:hover,header.top nav div a[aria-current]{text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--sun)}
.btn{display:inline-block;background:var(--sun);color:#10303c;padding:13px 22px;border-radius:6px;text-decoration:none;font-weight:700}
.btn:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent;color:#fff;border:2px solid #fff;padding:11px 20px}
.btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--sun);outline-offset:3px}
/* hero */
.hero{position:relative;color:#fff;background:var(--lake);overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 60%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,20,26,.55),rgba(6,20,26,.72))}
.hero .in{position:relative;z-index:1;padding:clamp(64px,12vw,140px) 20px clamp(64px,10vw,120px)}
.hero h1{font-size:clamp(34px,7vw,62px);line-height:1.05;margin:0 0 18px;font-weight:800;max-width:15em}
.hero p{max-width:36em;color:#e1eef1;margin:0 0 26px;font-size:19px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px}
section.s{padding:56px 0}
h2{font-size:clamp(26px,5vw,36px);margin:0 0 8px;line-height:1.15}
h3{line-height:1.2}
.lead{color:var(--muted);margin:0 0 28px;max-width:40em}
.alt{background:var(--card);border-block:1px solid var(--line)}
/* cards */
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;text-decoration:none;color:inherit}
.alt .card{background:var(--bg)}
.card:hover{border-color:var(--green)}
.card img{display:block;width:100%;aspect-ratio:3/2;object-fit:cover}
.card .b{padding:16px 18px 20px}
.card h3{margin:6px 0 6px;font-size:20px}
.card p{margin:0;font-size:16px;color:var(--muted)}
.card.plain .b{padding:20px}
.tag{display:inline-block;font-size:13px;font-weight:700;color:var(--green);border:1.5px solid var(--green);border-radius:20px;padding:1px 10px}
.tag.v{color:var(--blue);border-color:var(--blue)}
.tag.t{color:#b0561a;border-color:#b0561a}
@media (prefers-color-scheme:dark){.tag.t{color:#f0a674;border-color:#f0a674}}
.more{display:inline-block;margin-top:22px;font:700 16px "Bricolage Grotesque",Arial,sans-serif}
/* band */
.band{position:relative;margin:0;height:clamp(220px,32vw,400px);overflow:hidden}
.band img{width:100%;height:100%;object-fit:cover;object-position:50% 55%;display:block}
.band figcaption{position:absolute;left:0;right:0;bottom:0;padding:28px 20px 14px;color:#fff;font:500 15px "Bricolage Grotesque",Arial,sans-serif;background:linear-gradient(transparent,rgba(6,20,26,.7))}
/* method list */
.steps{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));counter-reset:n;padding:0;list-style:none;margin:0}
.steps li{counter-increment:n;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:18px 20px}
.steps li::before{content:counter(n);display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--sun);color:#10303c;font:800 15px "Bricolage Grotesque",Arial,sans-serif;margin-bottom:8px}
.steps b{display:block;font:700 18px "Bricolage Grotesque",Arial,sans-serif}
.steps span{font-size:16px;color:var(--muted)}
/* page head */
.phead{background:var(--lake);color:#fff;padding:40px 0 44px}
.phead h1{font-size:clamp(30px,6vw,48px);margin:6px 0 10px;line-height:1.08;max-width:18em}
.phead p{margin:0;color:#cfe2e6;max-width:40em}
.crumb{font-size:14px;color:var(--muted)}.crumb a{color:var(--muted)}
.phead .crumb,.phead .crumb a{color:#b9d3d9}
/* article */
.post{max-width:42em;margin:0 auto;padding:36px 20px 56px}
.post h2{font-size:25px;margin:38px 0 10px}
.post h3{font-size:20px;margin:24px 0 6px;font-family:"Bricolage Grotesque",Arial,sans-serif}
.post p{margin:0 0 16px}
.post ul,.post ol{padding-left:1.25em;margin:0 0 18px}
.post li{margin:4px 0}
.meta{font-size:14px;color:var(--muted);margin:0 0 18px}
.qb{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--sun);border-radius:8px;padding:16px 20px;margin:0 0 26px}
.qb b{font:800 16px "Bricolage Grotesque",Arial,sans-serif;display:block;margin-bottom:6px}
.qb ul{margin:0}
.note{background:var(--warn);border:1px solid var(--warnline);border-radius:8px;padding:14px 18px;margin:0 0 22px;font-size:16px}
.note b{font-family:"Bricolage Grotesque",Arial,sans-serif}
.tbl{overflow-x:auto;margin:0 0 22px}
table.crit{border-collapse:collapse;width:100%;min-width:480px;font-size:16px;background:var(--card)}
table.crit th,table.crit td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
table.crit th{background:var(--bg);font-family:"Bricolage Grotesque",Arial,sans-serif;font-size:14px}
.check{list-style:none;padding:0!important}
.check li{padding-left:28px;position:relative}
.check li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:8px;margin:0 0 10px;padding:0}
.faq summary{cursor:pointer;padding:13px 16px;font:700 17px "Bricolage Grotesque",Arial,sans-serif}
.faq details p{margin:0;padding:0 16px 14px;font-size:17px}
.affil{background:var(--card);border:2px solid var(--green);border-radius:10px;padding:18px 20px;margin:28px 0}
.affil h2{margin:0 0 6px!important;font-size:22px!important}
.affil ul{list-style:none;padding:0;margin:10px 0 0}
.affil li a{display:inline-block;margin:4px 0;font-weight:700;font-family:"Bricolage Grotesque",Arial,sans-serif}
.affil small{display:block;color:var(--muted);margin-top:8px;font-size:14px;line-height:1.4}
.related{display:grid;gap:12px;margin:12px 0 0;padding:0;list-style:none}
.related a{display:block;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:12px 16px;text-decoration:none;font:700 16px "Bricolage Grotesque",Arial,sans-serif}
.related span{display:block;font:400 15px/1.4 "Source Serif 4",Georgia,serif;color:var(--muted);margin-top:2px}
.disc{font-size:14px;color:var(--muted);border-top:1px solid var(--line);margin-top:30px;padding-top:14px}
/* footer */
footer{background:var(--lake);color:#9fc0c8;padding:34px 0;font-size:14px}
footer a{color:#fff}
footer .cols{display:flex;flex-wrap:wrap;gap:24px 48px;margin-bottom:18px}
footer h4{color:#fff;margin:0 0 6px;font:700 14px "Bricolage Grotesque",Arial,sans-serif}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin:2px 0}
@media(max-width:520px){body{font-size:17px}.hero p{font-size:17px}}
.g4{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}