:root{
  --bg:#f7f1e8;--paper:#fffaf3;--ink:#2a1f17;--muted:#6f6052;--line:#e6d9c6;
  --crust:#b4652a;--crust-d:#8c4a1a;--wheat:#e9c98f;--rye:#4a3426;--ok:#3f7a4a;
  --r:18px;--shadow:0 1px 2px rgba(42,31,23,.06),0 8px 28px rgba(42,31,23,.07);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{display:block;max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;background:var(--ink);color:#fff;padding:8px 12px;border-radius:8px;z-index:9}

/* header */
header.top{position:sticky;top:0;z-index:5;background:rgba(247,241,232,.86);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
header.top.scrolled{border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;letter-spacing:-.01em}
.logo svg{width:34px;height:34px}
.logo-name{font-family:var(--serif);font-size:21px}
.logo-name i{font-style:normal;color:var(--crust)}
.nav ul{display:flex;gap:22px;list-style:none;margin:0 0 0 auto;padding:0}
.nav ul a{text-decoration:none;color:var(--muted);font-size:15px;font-weight:500}
.nav ul a:hover,.nav ul a[aria-current]{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:var(--paper);text-decoration:none;font-weight:600;font-size:15px;padding:12px 18px;border-radius:999px;border:0;cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{background:var(--rye);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper)}
.btn.crust{background:var(--crust)}.btn.crust:hover{background:var(--crust-d)}
.nav .btn{padding:10px 16px}

/* hero */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding:56px 0 40px}
.kicker{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--crust)}
h1,h2,h3{font-family:var(--serif);font-weight:700;letter-spacing:-.015em;line-height:1.1;margin:0}
h1{font-size:clamp(40px,6vw,68px);margin:14px 0 18px}
h1 em{font-style:italic;color:var(--crust)}
h2{font-size:clamp(28px,3.6vw,40px)}
h3{font-size:22px}
.lead{font-size:19px;color:var(--muted);max-width:34em;margin:0 0 28px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-art{position:relative;aspect-ratio:1/1;border-radius:32px;background:radial-gradient(120% 90% at 30% 20%,#f3dcb2 0,#e7c08a 45%,#c98a4f 100%);box-shadow:var(--shadow);overflow:hidden}
.hero-art svg{position:absolute;inset:0;width:100%;height:100%}
.hero-art .tag{position:absolute;left:18px;bottom:18px;background:var(--paper);border-radius:14px;padding:10px 14px;font-size:14px;box-shadow:var(--shadow)}
.hero-art .tag b{display:block;font-family:var(--serif);font-size:20px}
.strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:8px 0 24px}
.strip div{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:14px 16px;font-size:15px;color:var(--muted)}
.strip b{color:var(--ink)}

section{padding:64px 0}
[id]{scroll-margin-top:84px}
.sec-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{margin-top:8px}
.link{color:var(--crust-d);font-weight:600;text-decoration:none;white-space:nowrap}
.link:hover{text-decoration:underline}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.thumb{height:150px;display:grid;place-items:center;font-family:var(--serif);font-size:30px;font-weight:700;color:var(--paper)}
.t1{background:linear-gradient(135deg,#c9884d,#8c4a1a)}
.t2{background:linear-gradient(135deg,#7a5a3d,#3b2a1f)}
.t3{background:linear-gradient(135deg,#d9b277,#b4652a)}
.card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.meta{font-size:13px;color:var(--muted);font-weight:600}
.card p{margin:0;color:var(--muted);font-size:15px}
.go{margin-top:auto;padding-top:8px;color:var(--crust-d);font-weight:600;font-size:15px}

/* tool */
.tool{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;background:var(--rye);color:#f6ead9;border-radius:28px;padding:44px}
.tool .kicker{color:var(--wheat)}
.tool h2{color:#fff8ee;margin:10px 0 14px}
.tool p{color:#d9c7b1;margin:0 0 22px}
.tool ul.hint{margin:0;padding:0;list-style:none;display:grid;gap:10px;font-size:15px;color:#e9dccb}
.tool ul.hint li{display:flex;gap:10px}
.tool ul.hint li::before{content:"";flex:0 0 8px;height:8px;margin-top:8px;border-radius:50%;background:var(--wheat)}
.panel{background:var(--paper);color:var(--ink);border-radius:20px;padding:24px;box-shadow:0 20px 50px rgba(0,0,0,.18)}
.tabs{display:flex;gap:6px;background:#f0e5d5;padding:5px;border-radius:12px;margin-bottom:20px}
.tabs button{flex:1;border:0;background:transparent;font:600 14px var(--sans);color:var(--muted);padding:10px;border-radius:9px;cursor:pointer}
.tabs button[aria-selected=true]{background:var(--paper);color:var(--ink);box-shadow:0 1px 3px rgba(42,31,23,.12)}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label,.flabel{font-size:13px;font-weight:600;color:var(--muted)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.inp{position:relative}
.inp input{width:100%;font:600 17px var(--sans);color:var(--ink);background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:11px 40px 11px 12px;appearance:textfield;-moz-appearance:textfield}
.inp input::-webkit-outer-spin-button,.inp input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.inp input:focus{outline:none;border-color:var(--crust);box-shadow:0 0 0 3px rgba(180,101,42,.15)}
.inp span{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:14px;color:var(--muted);pointer-events:none}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label{font-size:14px;font-weight:600;padding:8px 12px;border-radius:999px;background:#f0e5d5;color:var(--muted);cursor:pointer;transition:background .15s,color .15s}
.seg input:checked+label{background:var(--ink);color:var(--paper)}
.seg input:focus-visible+label{outline:2px solid var(--crust);outline-offset:2px}
.result{margin-top:6px;border-top:1px dashed var(--line);padding-top:16px}
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.res{background:#f6ecdd;border-radius:12px;padding:10px 12px}
.res small{display:block;font-size:12px;color:var(--muted);font-weight:600}
.res b{font-family:var(--serif);font-size:24px}
.res b i{font-style:normal;font-size:14px;color:var(--muted);font-family:var(--sans);font-weight:600;margin-left:2px}
.total{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:15px;color:var(--muted)}
.total b{color:var(--ink);font-size:17px}
.badge{display:inline-block;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:#e5efe2;color:var(--ok)}
.badge.warn{background:#f8e6d3;color:var(--crust-d)}
.note{font-size:13px;color:var(--muted);margin:10px 0 0}
.steps{counter-reset:s;list-style:none;margin:0;padding:0;display:grid;gap:10px}
.steps li{counter-increment:s;display:grid;grid-template-columns:34px 1fr auto;gap:10px;align-items:center;background:#f6ecdd;border-radius:12px;padding:10px 12px;font-size:15px}
.steps li::before{content:counter(s);display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--paper);font-weight:700;font-size:13px}
.steps li b{font-family:var(--serif);font-size:18px;white-space:nowrap}

/* about / faq */
.about{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.about div{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.about h3{margin:6px 0 8px}
.about p{margin:0;color:var(--muted);font-size:15px}
.num{font-family:var(--serif);font-size:15px;color:var(--crust);font-weight:700}
.faq{max-width:780px}
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:4px 20px;margin-bottom:10px}
.faq summary{cursor:pointer;list-style:none;font-weight:600;font-size:17px;padding:14px 28px 14px 0;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:10px;font-size:24px;color:var(--crust);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 16px;color:var(--muted)}

/* article */
.article{max-width:720px;margin:0 auto;padding:48px 20px 24px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.article h1{font-size:clamp(34px,5vw,50px);margin:12px 0 14px}
.article .meta{margin-bottom:28px}
.article h2{font-size:28px;margin:36px 0 12px}
.article p,.article li{font-size:18px;line-height:1.7}
.article p{margin:0 0 18px}
.article ul,.article ol{padding-left:22px;margin:0 0 18px}
.article li{margin-bottom:8px}
.callout{background:var(--paper);border:1px solid var(--line);border-left:4px solid var(--crust);border-radius:12px;padding:16px 20px;margin:24px 0}
.callout p{margin:0;font-size:17px}
table.t{width:100%;border-collapse:collapse;margin:8px 0 24px;font-size:16px;background:var(--paper);border-radius:12px;overflow:hidden}
table.t th,table.t td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line)}
table.t th{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:#f3e8d8}
.next{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.list{display:grid;gap:16px}
.list .card{flex-direction:row}
.list .thumb{width:180px;height:auto;flex:0 0 180px}

footer{border-top:1px solid var(--line);margin-top:40px;padding:32px 0 40px;font-size:14px;color:var(--muted)}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--ink)}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

@media (max-width:920px){
  .hero{grid-template-columns:1fr;gap:28px;padding-top:32px}
  .hero-art{max-width:460px;aspect-ratio:4/3}
  .tool{grid-template-columns:1fr;padding:28px 20px;gap:24px}
  .cards,.about{grid-template-columns:1fr}
  .nav ul{display:none}
  .nav .btn{margin-left:auto}
}
@media (max-width:560px){
  .strip{grid-template-columns:1fr}
  .res-grid{grid-template-columns:repeat(2,1fr)}
  .row3{grid-template-columns:1fr 1fr}
  .sec-head{flex-direction:column;align-items:start}
  .panel{padding:18px}
  .list .card{flex-direction:column}
  .list .thumb{width:auto;height:120px;flex:none}
  .nav .btn .t{display:none}
  section{padding:44px 0}
}