:root{--ink:#173029;--muted:#617168;--leaf:#1f6248;--leaf2:#2f7d5b;--water:#2f6f93;--cream:#f7f4e8;--paper:#fffdf7;--line:#d9dfd7;--rust:#b65f39;--gold:#d7a33d;--shadow:0 12px 34px rgba(26,56,44,.10);--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:linear-gradient(180deg,#fbfaf4 0,#f5f6ef 100%);line-height:1.65}a{color:#1c5e82;text-decoration-thickness:.08em;text-underline-offset:.15em}a:hover{text-decoration-thickness:.14em}img,svg{max-width:100%;height:auto}.wrap{width:min(1180px,calc(100% - 32px));margin:auto}.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:10px;z-index:100}.skip:focus{left:8px}.site-header{position:sticky;top:0;z-index:30;background:rgba(255,253,247,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.headrow{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);text-decoration:none;font-weight:800;letter-spacing:-.02em}.mark{width:38px;height:38px;border-radius:10px;background:var(--leaf);display:grid;place-items:center;box-shadow:inset 0 -8px 0 rgba(0,0,0,.08)}.mark svg{width:27px;height:27px}.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.nav a{color:var(--ink);text-decoration:none;padding:9px 11px;border-radius:10px;font-size:.94rem}.nav a:hover,.nav a:focus{background:#edf3ee}.menu-btn{display:none;border:1px solid var(--line);background:white;border-radius:10px;padding:8px 11px;font:inherit}.hero{padding:56px 0 38px;background:radial-gradient(circle at 82% 30%,rgba(47,111,147,.12),transparent 31%),radial-gradient(circle at 15% 25%,rgba(47,125,91,.14),transparent 28%)}.hero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:42px;align-items:center}.eyebrow{font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.11em;color:var(--leaf)}h1,h2,h3{line-height:1.16;letter-spacing:-.03em}h1{font-size:clamp(2.4rem,5vw,4.8rem);margin:.15em 0 .28em;max-width:920px}h2{font-size:clamp(1.55rem,3vw,2.35rem);margin-top:1.8em}h3{font-size:1.2rem}.lead{font-size:1.18rem;color:#365249;max-width:780px}.hero-card{background:var(--paper);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:28px;position:relative;overflow:hidden}.coil{height:260px;position:relative}.coil:before,.coil:after{content:"";position:absolute;border:13px solid var(--leaf2);border-radius:50%;inset:25px 10px 25px 30px;transform:rotate(-8deg)}.coil:after{inset:62px 40px 62px 2px;border-color:var(--water);transform:rotate(9deg)}.nozzle{position:absolute;width:96px;height:28px;background:var(--rust);right:7px;bottom:35px;border-radius:8px 15px 15px 8px;transform:rotate(-18deg);box-shadow:inset -12px 0 rgba(0,0,0,.08)}.nozzle:before{content:"";position:absolute;width:38px;height:45px;background:#d7a33d;right:-17px;top:-9px;border-radius:8px}.pill{display:inline-flex;gap:8px;align-items:center;background:#edf3ee;border:1px solid #d8e8dc;padding:7px 11px;border-radius:999px;font-size:.88rem;font-weight:700}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-block;padding:12px 16px;border-radius:12px;background:var(--leaf);color:#fff;text-decoration:none;font-weight:800}.btn.alt{background:transparent;color:var(--leaf);border:1px solid var(--leaf)}.section{padding:42px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 7px 18px rgba(28,61,48,.05)}.card h3{margin-top:0}.card p:last-child{margin-bottom:0}.kicker{color:var(--leaf);font-weight:800;font-size:.84rem;text-transform:uppercase;letter-spacing:.08em}.callout{border-left:5px solid var(--gold);background:#fff8df;padding:16px 18px;border-radius:0 14px 14px 0;margin:24px 0}.callout.bad{border-left-color:var(--rust);background:#fff2ec}.article-wrap{display:grid;grid-template-columns:minmax(0,760px) minmax(220px,300px);gap:48px;padding:44px 0}.article h1{font-size:clamp(2.2rem,4vw,3.7rem)}.article p,.article li{font-size:1.03rem}.article ul,.article ol{padding-left:1.25rem}.article table{width:100%;border-collapse:collapse;margin:22px 0;background:white}.article th,.article td{border:1px solid var(--line);padding:11px;text-align:left;vertical-align:top}.article th{background:#eef4ef}.breadcrumbs{font-size:.88rem;color:var(--muted);margin-bottom:16px}.meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.9rem;margin:14px 0 28px}.sidebar{align-self:start;position:sticky;top:92px}.sidebar .card{margin-bottom:16px}.sidebar ul{padding-left:1.15rem}.sidebar a{text-decoration:none}.sidebar a:hover{text-decoration:underline}.quickfacts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:24px 0}.fact{background:#eef4ef;border-radius:14px;padding:15px}.fact strong{display:block;font-size:1.05rem}.tool{background:white;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow);margin:24px 0}.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.field label{display:block;font-weight:800;margin-bottom:6px}.field input,.field select{width:100%;font:inherit;padding:11px;border:1px solid #bfc9c0;border-radius:10px;background:#fff}.result{margin-top:18px;padding:18px;border-radius:14px;background:#edf7f1;border:1px solid #cce2d4;font-weight:650}.scorebar{height:14px;background:#e7ece7;border-radius:999px;overflow:hidden}.scorebar span{display:block;height:100%;background:var(--leaf);width:0}.checkgrid{display:grid;gap:10px}.checkgrid label{display:flex;gap:10px;align-items:flex-start;background:#f8faf8;border:1px solid var(--line);padding:11px;border-radius:10px}.footer{margin-top:50px;background:#173029;color:#eef5f0;padding:42px 0 24px}.footer a{color:#d9f1e3}.footgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}.fine{font-size:.86rem;color:#b9c9c0}.legal-links{display:flex;flex-wrap:wrap;gap:10px 16px;margin-top:24px}.tag{display:inline-block;border:1px solid var(--line);background:#fff;padding:5px 9px;border-radius:999px;font-size:.82rem;color:var(--muted);margin:2px}.table-scroll{overflow-x:auto}.source-list li{margin-bottom:12px}.notice{font-size:.9rem;color:#52655a;background:#f0f2ed;border:1px solid var(--line);padding:13px 15px;border-radius:12px}.home-title{max-width:800px}.hero-stat{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px}.hero-stat div{background:#f1f6f2;border-radius:12px;padding:12px;text-align:center}.hero-stat strong{font-size:1.35rem;display:block}.index-links{columns:2;column-gap:30px}.index-links li{break-inside:avoid;margin-bottom:8px}
@media(max-width:900px){.hero-grid,.article-wrap,.footgrid{grid-template-columns:1fr}.sidebar{position:static}.grid{grid-template-columns:1fr 1fr}.hero-card{max-width:620px}.nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 16px}.nav.open{display:flex}.menu-btn{display:block}.headrow{position:relative}.index-links{columns:1}}
@media(max-width:620px){.wrap{width:min(100% - 22px,1180px)}.grid,.tool-grid,.quickfacts{grid-template-columns:1fr}.hero{padding-top:36px}.hero-stat{grid-template-columns:1fr}.coil{height:210px}.article-wrap{gap:22px}.card,.tool{padding:18px}h1{font-size:2.35rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}