/* 色・文字・余白は DESIGN.md の値 */
:root{
  --paper:#FBFAF6;--dot:#E4DED3;--sheet:#FFFFFF;--ink:#1E1D1A;--ink-2:#5C5850;--ink-3:#757067;--line:#E6E1D7;
  --green:#17594A;--green-d:#0F4237;--green-soft:#E2EFE9;--coral:#FF6B4A;--coral-soft:#FFE3DA;--amber:#C98A0E;
  --pen-coral:#F0563A;--pen-green:#13896F;--pen-blue:#2F6FC6;
  --lift:0 1px 0 #E6E1D7,0 18px 40px -18px rgba(30,29,26,.18);
  --r-s:10px;--r-m:18px;--r-l:28px;
  --gutter:clamp(16px,5vw,56px);--section:clamp(72px,10vw,128px);
  --head:"Young Serif",Georgia,serif;--body:"Atkinson Hyperlegible Next",system-ui,sans-serif;--hand:Caveat,"Klee One",cursive;
}
html[lang=ja]{--head:"Zen Old Mincho","Hiragino Mincho ProN",serif;--body:"BIZ UDPGothic","Hiragino Sans",sans-serif;--hand:"Klee One",Caveat,cursive}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper) radial-gradient(var(--dot) 1.4px,transparent 1.4px) 0 0/24px 24px;color:var(--ink);font:400 18px/1.55 var(--body);-webkit-font-smoothing:antialiased}
html[lang=ja] body{line-height:1.85}
a{color:var(--green)}
button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--green);outline-offset:2px}
h1,h2,h3{font-family:var(--head);font-weight:400;margin:0;line-height:1.15;text-wrap:balance}
html[lang=ja] :is(h1,h2,h3){font-weight:700;line-height:1.35}
h1{font-size:clamp(40px,6vw,72px);letter-spacing:-.01em}
html[lang=ja] h1{font-size:clamp(28px,4vw,54px);letter-spacing:.01em}
h2{font-size:clamp(30px,3.6vw,44px)}
h3{font-size:22px}
p{margin:0}

.nav{display:flex;align-items:center;justify-content:space-between;max-width:1232px;margin:0 auto;padding:20px var(--gutter)}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;text-decoration:none;color:var(--ink);font:400 22px/1 "Young Serif",Georgia,serif}
.lang{display:flex;gap:2px;background:var(--sheet);border:1px solid var(--line);border-radius:999px;padding:3px}
.lang a{display:flex;align-items:center;text-decoration:none;border:0;background:transparent;min-height:44px;padding:0 14px;border-radius:999px;font-size:15px;color:var(--ink-2);cursor:pointer}
.lang a[aria-current=page]{background:var(--ink);color:var(--sheet)}

main{max-width:1232px;margin:0 auto;padding:0 var(--gutter)}
section{padding:var(--section) 0}

/* ヒーロー：右の板が主役 */
.hero{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(32px,5vw,72px);align-items:center;padding-top:clamp(24px,5vw,64px)}
.lead{font-size:20px;color:var(--ink-2);margin:24px 0 32px;max-width:32em}
html[lang=ja] .lead{max-width:24em}
.signup{display:flex;gap:8px;max-width:480px}
.signup input{flex:1;min-width:0;height:56px;border:1px solid var(--line);background:var(--sheet);border-radius:999px;padding:0 22px;font-size:18px}
.signup input::placeholder{color:var(--ink-3)}
.btn{height:56px;border:0;border-radius:999px;background:var(--green);color:#fff;font-weight:600;font-size:17px;padding:0 26px;cursor:pointer;white-space:nowrap}
html[lang=ja] .btn{font-weight:700}
.btn:hover{background:var(--green-d)}
.signup.sent{opacity:.55;pointer-events:none}
.form-err{color:#B3261E;font-size:15px;margin:10px 4px 0}
.form-err[hidden]{display:none}
.fine{font-size:15px;color:var(--ink-2);margin:12px 4px 0}

.board{background:var(--sheet);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--lift);padding:clamp(18px,2.4vw,28px)}
.said{display:flex;align-items:flex-start;gap:10px;min-height:56px;font-size:16px;color:var(--ink-2);padding-bottom:16px;border-bottom:1px dashed var(--line)}
.said .mic{flex:none;width:30px;height:30px;border-radius:50%;background:var(--coral);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px}
.wb{padding:28px 0 8px;text-align:center}
.wb-title{font:700 clamp(36px,4vw,48px)/1 var(--hand);display:inline-block;margin:0 0 22px;background:linear-gradient(transparent 60%,var(--coral-soft) 60%);padding:0 6px}
html[lang=ja] .wb-title{font-size:clamp(28px,3vw,36px);font-weight:600}
.wb-row{display:flex;align-items:flex-start;justify-content:center}
.step{position:relative;display:flex;flex-direction:column;align-items:center;width:30%;opacity:0;transform:translateY(12px) scale(.94)}
.step img{width:min(104px,20vw);height:min(104px,20vw)}
.step b{font:700 clamp(28px,2.8vw,36px)/1.05 var(--hand);margin-top:6px}
html[lang=ja] .step b{font-size:clamp(22px,2.2vw,28px);font-weight:600}
.step small{font:700 22px var(--hand);color:var(--ink-2)}
.wb .arrow{width:clamp(28px,4vw,48px);flex:none;margin-top:44px;opacity:0}
.ring{position:absolute;left:-8%;top:-12px;width:116%;height:calc(100% + 24px);overflow:visible}
.ring path{stroke-dasharray:640;stroke-dashoffset:640}
.board-foot{display:flex;justify-content:space-between;align-items:center;margin-top:18px;font-size:15px}
.timer{color:var(--ink-2);display:flex;align-items:center;gap:6px;opacity:0}
.gotit{background:var(--green-soft);color:var(--green);border-radius:999px;min-height:44px;padding:0 18px;font-weight:600;display:flex;align-items:center;gap:8px;opacity:0}
.board.play .step{animation:place .45s cubic-bezier(.2,.8,.2,1) forwards;animation-delay:calc(.2s + var(--d)*.11s)}
.board.play .wb .arrow{animation:show .3s forwards;animation-delay:calc(.2s + var(--d)*.11s)}
.board.play .ring path{animation:draw .6s ease-out forwards;animation-delay:1s}
.board.play .gotit{animation:show .3s forwards;animation-delay:1.9s}
.board.play .timer{animation:show .3s forwards;animation-delay:.9s}
.board.still .step,.board.still .wb .arrow,.board.still .gotit,.board.still .timer{animation-duration:0s!important;animation-delay:0s!important}
.board.still .ring path{animation-duration:0s!important;animation-delay:0s!important}
.board.clearing .wb-row,.board.clearing .board-foot{opacity:0;transition:opacity .5s}
@keyframes place{to{opacity:1;transform:none}}
@keyframes show{to{opacity:1}}
@keyframes draw{to{stroke-dashoffset:0}}
.cap{font-size:15px;color:var(--ink-2);margin:14px 6px 0}

/* 困りごと：左に見出し、右に3行 */
.split{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(32px,5vw,80px);align-items:start}
.pains ul{list-style:none;margin:0;padding:0}
.pains li{display:grid;grid-template-columns:40px 1fr;gap:16px;padding:28px 0;border-top:1px solid var(--line)}
.pains li:last-child{border-bottom:1px solid var(--line)}
.pains li>i{font-size:30px;color:var(--ink-2);margin-top:2px}
.pains p,.steps p,.promise p{color:var(--ink-2);margin-top:6px;max-width:34em}

/* 使い方：順番があるので番号を振る */
.steps ol{list-style:none;margin:48px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,4vw,48px);counter-reset:s}
.steps li{counter-increment:s}
.mini{height:132px;background:var(--sheet);border:1px solid var(--line);border-radius:var(--r-m);display:flex;align-items:center;justify-content:center;gap:10px;padding:16px;margin-bottom:20px}
.mini img{width:48px;height:48px}
.mini svg{width:28px;flex:none}
.mini .said-line{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--ink-2)}
.mini .said-line .mic{width:36px;height:36px;border-radius:50%;background:var(--coral);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;flex:none}
.mini .pill{min-height:44px;padding:0 16px;border-radius:999px;display:flex;align-items:center;gap:6px;font-size:16px;font-weight:600;border:1px solid var(--line);color:#8A5E00}
.mini .pill.got{background:var(--green);border-color:var(--green);color:#fff}
.steps li::before{content:counter(s);display:flex;align-items:center;justify-content:center;width:52px;height:52px;border:2.5px solid var(--ink);border-radius:50% 46% 52% 48%;font:700 30px/1 Caveat,cursive;margin-bottom:18px}

/* 守ること：1枚の白い紙に書いた約束 */
.promise .sheet{background:var(--sheet);border:1px solid var(--line);border-radius:var(--r-l);padding:clamp(28px,5vw,64px);display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,5vw,80px)}
.promise ul{list-style:none;margin:0;padding:0;display:grid;gap:28px}
.promise li{display:grid;grid-template-columns:36px 1fr;gap:14px}
.promise li>i{font-size:28px;color:var(--green)}

/* よくある質問 */
.faq dl{margin:0}
.faq dl>div{padding:24px 0;border-top:1px solid var(--line)}
.faq dl>div:last-child{border-bottom:1px solid var(--line)}
.faq dt{font:400 22px/1.3 var(--head)}
html[lang=ja] .faq dt{font-weight:700;line-height:1.5}
.faq dd{margin:8px 0 0;color:var(--ink-2);max-width:40em}

/* 最後の登録 */
.cta{text-align:center}
.cta h2{max-width:16em;margin:0 auto 32px}
.cta .signup{margin:0 auto}

.foot{max-width:1232px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:28px var(--gutter) 40px;color:var(--ink-2);font-size:15px;border-top:1px solid var(--line)}

.modal{position:fixed;inset:0;background:rgba(30,29,26,.4);display:flex;align-items:center;justify-content:center;padding:16px;z-index:10}
.modal[hidden]{display:none}
.dialog{background:var(--sheet);border-radius:var(--r-l);padding:32px;max-width:460px;width:100%}
.dialog h3{margin:14px 0 10px}
.dialog p{color:var(--ink-2);margin:0 0 24px}
.dialog .ok{color:var(--green);font-weight:600;display:flex;align-items:center;gap:8px;margin:0}
.dialog .row{display:flex;gap:10px;flex-wrap:wrap}
.quiet{height:56px;border:1px solid var(--line);background:transparent;border-radius:999px;padding:0 22px;cursor:pointer;color:var(--ink-2);font-size:17px}

@media (max-width:900px){
  .hero,.split,.promise .sheet{grid-template-columns:1fr}
  .steps ol{grid-template-columns:1fr}
}
@media (max-width:520px){
  .signup{flex-direction:column}
  .signup input{flex:none}
  .btn{width:100%}
  .board-foot{flex-wrap:wrap;gap:10px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .step,.wb .arrow,.gotit{opacity:1!important;transform:none!important;animation:none!important}
  .ring path{stroke-dashoffset:0!important;animation:none!important}
}
.ph{display:inline-block}