:root {
  --primary:#0F766E;
  --primary-dark:#0B5F59;
  --primary-soft:#ECFDF5;
  --primary-soft-2:#F0FDFA;
  --accent:#0284C7;
  --accent-dark:#0369A1;
  --accent-soft:#EFF6FF;
  --heading:#0F172A;
  --body:#334155;
  --sub:#64748B;
  --soft-bg:#F8FAFC;
  --border:#E2E8F0;
  --white:#FFFFFF;
  --danger:#B91C1C;
  --radius-sm:10px;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-card:0 18px 50px rgba(15,23,42,.08);
  --shadow-float:0 28px 80px rgba(15,23,42,.15);
  --container:1180px;
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; font-family:"Noto Sans JP","Inter",sans-serif; color:var(--body); background:#fff; line-height:1.75; -webkit-font-smoothing:antialiased; }
body.menu-open { overflow:hidden; }
a { color:inherit; text-decoration:none; }
button,input { font:inherit; }
img { max-width:100%; display:block; }
h1,h2,h3,p { margin:0; }
h1,h2,h3 { color:var(--heading); line-height:1.3; letter-spacing:-.025em; }
h1 { font-size:clamp(42px,5.5vw,68px); font-weight:700; }
h2 { font-size:clamp(32px,4vw,48px); font-weight:700; }
h3 { font-size:22px; font-weight:600; }
.container { width:min(calc(100% - 40px),var(--container)); margin-inline:auto; }
.section { padding:104px 0; }
.section-soft { background:var(--soft-bg); }
.eyebrow { display:inline-block; margin-bottom:12px; color:var(--primary); font-family:"Inter",sans-serif; font-size:12px; font-weight:700; letter-spacing:.14em; }
.eyebrow.light { color:#CCFBF1; }
.section-heading { max-width:760px; margin-bottom:46px; }
.section-heading.centered { text-align:center; margin-inline:auto; }
.section-heading p { margin-top:16px; color:var(--sub); font-size:16px; }

.site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,.9); backdrop-filter:blur(16px); border-bottom:1px solid rgba(226,232,240,.72); transition:box-shadow .2s ease; }
.site-header.scrolled { box-shadow:0 8px 28px rgba(15,23,42,.06); }
.header-inner { min-height:78px; display:flex; align-items:center; justify-content:space-between; gap:32px; }
.brand img { width:176px; }
.site-nav { display:flex; align-items:center; gap:26px; color:var(--body); font-size:13px; font-weight:500; }
.site-nav > a:not(.btn):hover { color:var(--primary); }
.menu-button { display:none; width:42px; height:42px; padding:10px; border:0; border-radius:10px; background:transparent; }
.menu-button span { display:block; width:100%; height:2px; margin:4px 0; border-radius:9px; background:var(--heading); }

.btn { min-height:46px; padding:0 22px; display:inline-flex; align-items:center; justify-content:center; gap:8px; border:1px solid transparent; border-radius:10px; cursor:pointer; font-weight:600; font-size:14px; transition:transform .16s ease, box-shadow .16s ease, background .16s ease; }
.btn:hover { transform:translateY(-1px); }
.btn-primary { color:#fff; background:var(--primary); box-shadow:0 8px 22px rgba(15,118,110,.18); }
.btn-primary:hover { background:var(--primary-dark); }
.btn-secondary { color:var(--heading); background:#fff; border-color:var(--border); }
.btn-secondary:hover { border-color:#CBD5E1; box-shadow:0 8px 22px rgba(15,23,42,.06); }
.btn-white { color:var(--primary); background:#fff; }
.btn-sm { min-height:40px; padding-inline:18px; }
.btn-lg { min-height:54px; padding-inline:26px; font-size:15px; }
.btn.full { width:100%; }

.hero { position:relative; overflow:hidden; padding:92px 0 88px; background:linear-gradient(180deg,#fff 0%,#fff 68%,#F8FAFC 100%); }
.hero:before { content:""; position:absolute; width:520px; height:520px; right:-220px; top:-220px; border-radius:50%; background:radial-gradient(circle,rgba(2,132,199,.08),rgba(2,132,199,0) 68%); }
.hero-grid { position:relative; z-index:1; display:grid; grid-template-columns:.92fr 1.08fr; gap:70px; align-items:center; }
.product-kicker { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:20px; }
.product-kicker span,.product-kicker b { display:inline-flex; align-items:center; min-height:30px; padding:0 11px; border-radius:999px; font-family:"Inter",sans-serif; font-size:11px; letter-spacing:.04em; }
.product-kicker span { color:#fff; background:var(--primary); font-weight:700; }
.product-kicker b { color:var(--sub); background:var(--soft-bg); border:1px solid var(--border); font-weight:600; }
.hero-copy h1 span { color:var(--primary); white-space:nowrap; }
.hero-lead { max-width:650px; margin-top:24px; color:var(--sub); font-size:18px; line-height:1.9; }
.hero-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:32px; }

.hero-demo { position:relative; min-height:540px; }
.demo-glow { position:absolute; border-radius:50%; filter:blur(10px); opacity:.75; }
.demo-glow-a { width:300px; height:300px; right:20px; top:30px; background:#CCFBF1; }
.demo-glow-b { width:240px; height:240px; left:20px; bottom:20px; background:#DBEAFE; }
.browser-window { position:absolute; inset:22px 0 auto 26px; overflow:hidden; border:1px solid #CBD5E1; border-radius:18px; background:#fff; box-shadow:var(--shadow-float); transform:none; }
.browser-toolbar { height:48px; padding:0 14px; display:flex; align-items:center; gap:12px; border-bottom:1px solid var(--border); background:#F8FAFC; }
.browser-dots { display:flex; gap:5px; }
.browser-dots i { width:8px; height:8px; border-radius:50%; background:#CBD5E1; }
.address-bar { flex:1; height:28px; border-radius:7px; background:#fff; border:1px solid var(--border); display:flex; align-items:center; justify-content:center; color:#94A3B8; font-size:9px; }
.browser-page { padding:28px 30px 38px; }
.browser-page-label { color:var(--sub); font-size:9px; }
.browser-title { width:48%; height:18px; margin:8px 0 24px; border-radius:5px; background:#CBD5E1; }
.form-row { margin-top:12px; }
.form-row label { display:block; margin-bottom:5px; color:var(--sub); font-size:9px; }
.filled-input { min-height:38px; padding:8px 11px; display:flex; align-items:center; justify-content:space-between; border:1px solid #99F6E4; border-radius:8px; background:#F0FDFA; color:var(--heading); font-size:10px; }
.filled-input b { color:#16A34A; }
.filled-input.textarea { min-height:66px; align-items:flex-start; }
.submit-placeholder { width:100px; height:36px; margin-top:20px; border-radius:8px; display:flex; align-items:center; justify-content:center; background:#E2E8F0; color:#64748B; font-size:9px; }
.mini-control { position:absolute; right:-18px; bottom:6px; width:260px; padding:16px; border:1px solid rgba(15,118,110,.24); border-radius:16px; background:rgba(255,255,255,.96); box-shadow:0 22px 50px rgba(15,23,42,.18); backdrop-filter:blur(12px); transform:none; }
.mini-title { display:flex; align-items:center; gap:9px; }
.mini-title img { width:28px; height:28px; object-fit:contain; }
.mini-title div { min-width:0; flex:1; }
.mini-title small { display:block; color:var(--sub); font-family:"Inter",sans-serif; font-size:7px; font-weight:700; letter-spacing:.07em; }
.mini-title strong { display:block; margin-top:1px; color:var(--heading); font-size:12px; }
.ready-dot { color:#047857; background:#ECFDF5; border-radius:99px; padding:4px 7px; font-size:7px; font-weight:700; }
.mini-primary { width:100%; min-height:42px; margin-top:14px; border:0; border-radius:9px; color:#fff; background:var(--primary); font-size:11px; font-weight:600; }
.mini-actions { display:grid; grid-template-columns:repeat(3,1fr); gap:6px; margin-top:7px; }
.mini-actions button { min-height:31px; border:1px solid var(--border); border-radius:8px; background:#fff; color:var(--sub); font-size:9px; }


.problem-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.problem-card { min-height:240px; padding:28px; border:1px solid var(--border); border-radius:16px; background:#fff; }
.problem-card > span { width:38px; height:38px; display:grid; place-items:center; margin-bottom:26px; border-radius:10px; color:var(--primary); background:#ECFDF5; font-family:"Inter",sans-serif; font-size:11px; font-weight:700; }
.problem-card h3 { font-size:18px; }
.problem-card p { margin-top:12px; color:var(--sub); font-size:13px; }

.benefit-stack { display:grid; gap:18px; }
.benefit-row { min-height:390px; padding:50px; display:grid; grid-template-columns:64px .9fr 1.1fr; gap:40px; align-items:center; border:1px solid var(--border); border-radius:22px; background:#fff; box-shadow:0 14px 40px rgba(15,23,42,.04); }
.benefit-row.reverse .benefit-copy { order:3; }
.benefit-row.reverse .benefit-visual { order:2; }
.benefit-number { width:54px; height:54px; display:grid; place-items:center; border-radius:14px; color:#fff; background:var(--primary); font-family:"Inter",sans-serif; font-size:13px; font-weight:700; }
.benefit-number.blue { background:var(--accent); }
.benefit-label { color:var(--primary); font-family:"Inter",sans-serif; font-size:10px; font-weight:700; letter-spacing:.12em; }
.blue-text { color:var(--accent); }
.benefit-copy h3 { margin-top:8px; font-size:clamp(25px,3vw,34px); }
.benefit-copy p { margin-top:16px; color:var(--sub); font-size:14px; }
.benefit-visual { min-height:270px; position:relative; display:grid; place-items:center; overflow:hidden; border-radius:18px; background:linear-gradient(145deg,#ECFDF5,#EFF6FF); }
.confirm-box { width:70%; padding:28px; border:1px solid #CDEDE9; border-radius:16px; background:#fff; box-shadow:0 18px 45px rgba(15,23,42,.10); }
.confirm-box span { color:var(--sub); font-size:11px; }
.confirm-box strong { display:block; margin-top:5px; color:var(--heading); font-size:26px; }
.confirm-progress { height:8px; margin:16px 0 14px; border-radius:99px; background:#E2E8F0; overflow:hidden; }
.confirm-progress i { display:block; width:100%; height:100%; background:var(--primary); }
.confirm-box p { color:var(--sub); font-size:11px; }
.sheet { width:82%; overflow:hidden; border:1px solid var(--border); border-radius:14px; background:#fff; box-shadow:0 18px 45px rgba(15,23,42,.10); }
.sheet-row { min-height:52px; padding:0 18px; display:grid; grid-template-columns:1fr 28px 1fr; align-items:center; border-bottom:1px solid var(--border); color:var(--body); font-size:12px; }
.sheet-row.head { min-height:40px; background:#F8FAFC; color:var(--sub); font-size:9px; font-weight:600; }
.sheet-row.head span:last-child { grid-column:3; }
.sheet-row b { color:var(--accent); text-align:center; }
.sheet-note { padding:12px 18px; color:var(--accent); font-size:10px; font-weight:600; text-align:right; }
.dictionary-visual { min-height:300px; }
.dictionary-core { position:absolute; z-index:3; width:114px; height:114px; display:grid; place-items:center; border-radius:50%; color:#fff; background:var(--primary); font-size:14px; font-weight:700; box-shadow:0 16px 36px rgba(15,118,110,.25); }
.dictionary-word { position:absolute; padding:9px 14px; border:1px solid var(--border); border-radius:10px; background:#fff; color:var(--heading); font-size:11px; box-shadow:0 8px 18px rgba(15,23,42,.06); }
.dictionary-word:after { content:""; position:absolute; height:1px; background:#CBD5E1; transform-origin:left center; }
.dictionary-word.one { top:40px; left:34px; }
.dictionary-word.one:after { width:95px; right:-90px; top:28px; transform:rotate(22deg); }
.dictionary-word.two { top:52px; right:34px; }
.dictionary-word.two:after { width:92px; left:-84px; top:28px; transform:rotate(160deg); }
.dictionary-word.three { left:28px; bottom:48px; }
.dictionary-word.three:after { width:100px; right:-94px; top:0; transform:rotate(-20deg); }
.dictionary-word.four { right:34px; bottom:42px; }
.dictionary-word.four:after { width:94px; left:-86px; top:0; transform:rotate(198deg); }

.flow-list { list-style:none; padding:0; margin:56px 0 0; display:grid; grid-template-columns:1fr 34px 1fr 34px 1fr 34px 1fr; gap:10px; align-items:center; }
.flow-item { position:relative; min-height:260px; padding:28px 24px; border:1px solid var(--border); border-radius:16px; background:#fff; text-align:center; }
.flow-num { position:absolute; top:14px; left:14px; color:#94A3B8; font-family:"Inter",sans-serif; font-size:10px; font-weight:700; }
.flow-icon { width:58px; height:58px; margin:18px auto 22px; display:grid; place-items:center; border-radius:15px; color:var(--primary); background:#ECFDF5; font-family:"Inter",sans-serif; font-size:16px; font-weight:700; }
.browser-icon { color:var(--accent); background:#EFF6FF; font-size:28px; }
.check-icon { color:#047857; }
.flow-item h3 { font-size:17px; }
.flow-item p { margin-top:10px; color:var(--sub); font-size:12px; }
.flow-arrow { color:#CBD5E1; font-size:22px; text-align:center; }

.feature-showcase { overflow:hidden; }
.feature-tabs { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:16px; }
.feature-tab { min-height:42px; padding:0 17px; border:1px solid var(--border); border-radius:10px; background:#fff; color:var(--sub); cursor:pointer; font-size:12px; font-weight:600; }
.feature-tab.active { color:#fff; border-color:var(--primary); background:var(--primary); }
.feature-stage { min-height:520px; display:grid; grid-template-columns:.78fr 1.22fr; align-items:center; overflow:hidden; border:1px solid var(--border); border-radius:22px; background:#fff; }
.feature-stage-copy { padding:50px; }
.stage-kicker { color:var(--primary); font-family:"Inter",sans-serif; font-size:10px; font-weight:700; letter-spacing:.12em; }
.feature-stage-copy h3 { margin-top:10px; font-size:32px; }
.feature-stage-copy > p { margin-top:16px; color:var(--sub); font-size:14px; }
.stage-points { list-style:none; margin:22px 0 0; padding:0; display:grid; gap:10px; }
.stage-points li { position:relative; padding-left:25px; color:var(--body); font-size:12px; }
.stage-points li:before { content:"✓"; position:absolute; left:0; top:1px; width:18px; height:18px; display:grid; place-items:center; border-radius:50%; color:var(--primary); background:#CCFBF1; font-size:9px; font-weight:700; }
.feature-stage-screen { align-self:stretch; padding:44px 0 44px 44px; display:flex; align-items:center; background:linear-gradient(145deg,#F0FDFA,#EFF6FF); }
.mock-app { width:calc(100% + 34px); overflow:hidden; border:1px solid #CBD5E1; border-radius:16px 0 0 16px; background:#fff; box-shadow:0 22px 55px rgba(15,23,42,.12); }
.mock-app-top { height:48px; padding:0 16px; display:flex; align-items:center; gap:8px; border-bottom:1px solid var(--border); }
.mock-app-top img { width:24px; }
.mock-app-top span { color:var(--heading); font-family:"Inter",sans-serif; font-size:10px; font-weight:700; }
.mock-app-top b { margin-left:auto; color:var(--sub); font-size:9px; }
.mock-app-body { min-height:340px; display:grid; grid-template-columns:54px 1fr; }
.mock-side { padding-top:18px; border-right:1px solid var(--border); background:#F8FAFC; display:flex; flex-direction:column; align-items:center; gap:12px; }
.mock-side i { width:26px; height:26px; border-radius:7px; background:#E2E8F0; }
.mock-side i.active { background:#CCFBF1; border:1px solid #99F6E4; }
.mock-main { padding:22px; }
.mock-main-head { display:flex; align-items:center; justify-content:space-between; gap:20px; margin-bottom:18px; }
.mock-main-head small { display:block; color:var(--sub); font-size:9px; }
.mock-main-head strong { display:block; margin-top:2px; color:var(--heading); font-size:16px; }
.mock-main-head button { min-height:34px; padding:0 12px; border:0; border-radius:8px; background:var(--primary); color:#fff; font-size:9px; }
.record-head,.record-row { display:grid; grid-template-columns:1.1fr .8fr 1.2fr .6fr; gap:10px; align-items:center; min-height:42px; padding:0 12px; border-bottom:1px solid var(--border); font-size:8px; }
.record-head { min-height:34px; border-radius:7px 7px 0 0; background:#F8FAFC; color:var(--sub); font-weight:600; }
.record-row { color:var(--body); }
.record-row b { width:max-content; padding:4px 6px; border-radius:99px; color:#047857; background:#ECFDF5; font-size:7px; }
.record-row.faded { opacity:.6; }
.feature-grid-small { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:16px; }
.small-feature { padding:26px; border:1px solid var(--border); border-radius:16px; background:#fff; }
.small-feature > span { color:var(--accent); font-family:"Inter",sans-serif; font-size:10px; font-weight:700; }
.small-feature h3 { margin-top:12px; font-size:17px; }
.small-feature p { margin-top:9px; color:var(--sub); font-size:12px; }

.plan-layout { max-width:900px; margin:0 auto; display:grid; grid-template-columns:1fr 1fr; gap:18px; align-items:start; }
.plan-card { position:relative; padding:38px; border:1px solid var(--border); border-radius:20px; background:#fff; }
.standard-card { border:2px solid var(--primary); box-shadow:0 18px 48px rgba(15,118,110,.10); }
.plan-tag { display:inline-block; color:var(--sub); font-family:"Inter",sans-serif; font-size:9px; font-weight:700; letter-spacing:.11em; }
.plan-card h3 { margin-top:8px; font-size:26px; }
.price-free { margin:18px 0 6px; color:var(--heading); font-family:"Inter",sans-serif; font-size:44px; font-weight:700; line-height:1; }
.price-pending { margin:18px 0 6px; color:var(--heading); font-size:19px; font-weight:600; line-height:1; }
.price-pending span { display:block; margin-top:9px; color:var(--primary); font-size:30px; }
.plan-card > p { min-height:54px; color:var(--sub); font-size:12px; }
.plan-card > .btn { margin-top:20px; }
.plan-card ul { list-style:none; margin:26px 0 0; padding:22px 0 0; border-top:1px solid var(--border); display:grid; gap:12px; }
.plan-card li { display:flex; align-items:center; justify-content:space-between; gap:18px; color:var(--body); font-size:12px; }
.plan-card li span { min-width:0; }
.plan-card li strong { flex:none; color:var(--heading); font-family:"Inter","Noto Sans JP",sans-serif; font-size:12px; font-weight:700; text-align:right; }
.plan-card li.muted, .plan-card li.muted strong { color:#94A3B8; }
.recommend-badge { position:absolute; top:-14px; right:24px; padding:7px 12px; border-radius:99px; color:#fff; background:var(--primary); font-family:"Inter",sans-serif; font-size:9px; font-weight:700; letter-spacing:.08em; }
.payment-note { max-width:900px; margin:22px auto 0; padding:17px 20px; display:flex; flex-wrap:wrap; justify-content:center; gap:4px 10px; border:1px solid #CCFBF1; border-radius:12px; color:var(--sub); background:#F0FDFA; font-size:11px; text-align:center; }
.payment-note strong { color:#0F766E; font-weight:700; }

.faq-layout { display:grid; grid-template-columns:.7fr 1.3fr; gap:72px; align-items:start; }
.faq-list { display:grid; gap:9px; }
details { overflow:hidden; border:1px solid var(--border); border-radius:14px; background:#fff; }
summary { position:relative; cursor:pointer; list-style:none; padding:20px 54px 20px 22px; color:var(--heading); font-size:13px; font-weight:600; }
summary::-webkit-details-marker { display:none; }
summary:after { content:"+"; position:absolute; right:20px; top:50%; transform:translateY(-50%); color:var(--primary); font-size:22px; font-weight:400; }
details[open] summary:after { content:"−"; }
details p { padding:0 22px 20px; color:var(--sub); font-size:12px; }

.final-cta { padding-top:72px; }
.cta-card { padding:50px 56px; display:flex; align-items:center; justify-content:space-between; gap:40px; border-radius:24px; background:linear-gradient(135deg,#0F766E,#115E59); box-shadow:0 20px 50px rgba(15,118,110,.18); }
.cta-card h2 { color:#fff; font-size:clamp(30px,3.7vw,42px); }
.cta-card p { margin-top:10px; color:#CCFBF1; }
.cta-actions { min-width:230px; display:flex; flex-direction:column; align-items:center; gap:8px; }
.cta-actions small { color:#99F6E4; font-size:9px; text-align:center; }

.site-footer { margin-top:16px; padding:64px 0 22px; border-top:1px solid var(--border); background:#fff; }
.footer-top { display:grid; grid-template-columns:1fr 1.2fr; gap:80px; padding-bottom:44px; }
.footer-brand img { width:190px; }
.footer-brand p { margin-top:15px; color:var(--sub); font-size:13px; }
.footer-columns { display:grid; grid-template-columns:repeat(3,1fr); gap:34px; }
.footer-columns > div { display:flex; flex-direction:column; gap:9px; }
.footer-columns strong { margin-bottom:5px; color:var(--heading); font-size:13px; }
.footer-columns a { color:var(--sub); font-size:12px; }
.footer-columns a:hover { color:var(--primary); }
.footer-bottom { padding-top:20px; border-top:1px solid var(--border); display:flex; justify-content:space-between; gap:20px; color:#94A3B8; font-size:11px; }

.toast { position:fixed; z-index:200; right:24px; bottom:24px; max-width:min(360px,calc(100% - 48px)); padding:14px 18px; border:1px solid #99F6E4; border-radius:12px; color:#065F46; background:#F0FDFA; box-shadow:0 16px 36px rgba(15,23,42,.14); font-size:11px; opacity:0; transform:translateY(12px); pointer-events:none; transition:.2s ease; }
.toast.show { opacity:1; transform:none; }
.reveal { opacity:0; transform:translateY(14px); transition:opacity .55s ease,transform .55s ease; }
.reveal.is-visible { opacity:1; transform:none; }

@media (max-width: 1020px) {
  .hero-grid { grid-template-columns:1fr; }
  .hero-copy { max-width:760px; }
  .hero-demo { max-width:750px; width:100%; margin-inline:auto; }
  .problem-grid { grid-template-columns:1fr 1fr; }
  .benefit-row,.benefit-row.reverse { grid-template-columns:56px 1fr; }
  .benefit-row .benefit-visual,.benefit-row.reverse .benefit-visual { grid-column:2; grid-row:auto; order:initial; }
  .benefit-row.reverse .benefit-copy { order:initial; }
  .flow-list { grid-template-columns:1fr 1fr; gap:14px; }
  .flow-arrow { display:none; }
  .feature-stage { grid-template-columns:1fr; }
  .feature-stage-screen { min-height:430px; padding-left:60px; }
  .feature-grid-small { grid-template-columns:1fr 1fr; }
  .faq-layout,.footer-top { grid-template-columns:1fr; }
  .faq-layout { gap:34px; }
}

@media (max-width: 760px) {
  .container { width:min(calc(100% - 28px),var(--container)); }
  .header-inner { min-height:68px; }
  .brand img { width:150px; }
  .menu-button { display:block; }
  .site-nav { position:fixed; inset:68px 0 auto; padding:20px; display:none; flex-direction:column; align-items:stretch; gap:0; border-bottom:1px solid var(--border); background:#fff; box-shadow:0 18px 40px rgba(15,23,42,.08); }
  .site-nav.open { display:flex; }
  .site-nav > a:not(.btn) { padding:13px 4px; border-bottom:1px solid #F1F5F9; }
  .nav-cta { margin-top:14px; }
  .section { padding:78px 0; }
  .hero { padding:70px 0 72px; }
  .hero-demo { min-height:480px; }
  .browser-window { left:0; right:0; }
  .mini-control { right:0; }
  .problem-grid { grid-template-columns:1fr; }
  .problem-card { min-height:auto; }
  .benefit-row,.benefit-row.reverse { padding:30px; grid-template-columns:1fr; gap:22px; }
  .benefit-number { width:46px; height:46px; }
  .benefit-row .benefit-visual,.benefit-row.reverse .benefit-visual { grid-column:1; }
  .flow-list { grid-template-columns:1fr; }
  .flow-item { min-height:auto; text-align:left; padding-left:88px; }
  .flow-icon { position:absolute; left:20px; top:42px; margin:0; }
  .feature-stage-copy { padding:34px; }
  .feature-stage-screen { padding:28px 0 28px 28px; min-height:390px; }
  .feature-grid-small { grid-template-columns:1fr; }
  .plan-layout { grid-template-columns:1fr; }
  .scope-cards { grid-template-columns:1fr; }
  .cta-card { padding:38px 30px; flex-direction:column; align-items:flex-start; }
  .cta-actions { min-width:0; width:100%; align-items:flex-start; }
  .cta-actions .btn { width:100%; }
  .footer-columns { grid-template-columns:1fr 1fr; }
}

@media (max-width: 520px) {
  h1 { font-size:clamp(34px,10vw,40px); }
  .hero-copy h1 span { white-space:nowrap; }
  h2 { font-size:30px; }
  .hero-lead { font-size:16px; }
  .hero-actions { flex-direction:column; }
  .hero-actions .btn { width:100%; }
  .hero-demo { display:none; }
  .benefit-visual { min-height:240px; }
  .dictionary-word { font-size:9px; padding:7px 10px; }
  .dictionary-core { width:94px; height:94px; font-size:12px; }
  .feature-tabs { display:grid; grid-template-columns:1fr 1fr; }
  .feature-tab { width:100%; }
  .feature-stage-screen { display:none; }
  .record-head,.record-row { grid-template-columns:1fr 1fr; }
  .record-head span:nth-child(3),.record-head span:nth-child(4),.record-row span:nth-child(3),.record-row b { display:none; }
  .plan-card { padding:30px; }
  .footer-columns { grid-template-columns:1fr; }
  .footer-bottom { flex-direction:column; }
}

/* Purchase / Stripe Checkout */
.price-standard { margin:18px 0 6px; display:flex; align-items:flex-end; gap:10px; color:var(--heading); }
.price-standard span { padding-bottom:5px; color:var(--sub); font-size:13px; font-weight:600; }
.price-standard strong { color:var(--primary); font-family:"Inter","Noto Sans JP",sans-serif; font-size:38px; font-weight:700; line-height:1; letter-spacing:-.03em; }
.purchase-panel { max-width:900px; margin:28px auto 0; padding:34px; display:grid; grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr); gap:34px; border:1px solid var(--border); border-radius:20px; background:#fff; box-shadow:0 18px 50px rgba(15,23,42,.07); }
.purchase-copy h3 { margin:8px 0 10px; color:var(--heading); font-size:28px; line-height:1.35; }
.purchase-copy p { color:var(--sub); font-size:13px; line-height:1.8; }
.purchase-form { display:grid; gap:18px; }
.purchase-field label { display:flex; align-items:center; gap:8px; margin-bottom:8px; color:var(--heading); font-size:13px; font-weight:600; }
.purchase-field label span { padding:2px 6px; border-radius:999px; color:#fff; background:var(--primary); font-size:9px; font-weight:700; }
.purchase-field label small { color:var(--sub); font-size:10px; font-weight:500; }
.purchase-field input { width:100%; min-height:48px; padding:0 14px; border:1px solid var(--border); border-radius:10px; outline:none; color:var(--heading); background:#fff; font:inherit; font-size:14px; transition:border-color .16s ease, box-shadow .16s ease; }
.purchase-field input:focus { border-color:rgba(15,118,110,.65); box-shadow:0 0 0 3px rgba(15,118,110,.10); }
.purchase-field p { margin-top:7px; color:var(--sub); font-size:10px; line-height:1.6; }
.purchase-error { min-height:18px; color:#B91C1C; font-size:11px; font-weight:600; line-height:1.5; }
.purchase-submit:disabled { cursor:not-allowed; opacity:.65; transform:none; }
.purchase-legal { color:var(--sub); font-size:10px; line-height:1.7; text-align:center; }
.purchase-legal a { color:var(--primary); text-decoration:underline; text-underline-offset:2px; }

@media (max-width: 720px) {
  .purchase-panel { grid-template-columns:1fr; padding:26px; gap:22px; }
  .price-standard strong { font-size:34px; }
}