:root{
  --bg:#fbfaf7;--bg2:#f2f6f8;--card:#ffffff;--ink:#14213d;--muted:#5b6b82;
  --brand:#0e7c86;--brand-d:#0a5f67;--accent:#f26a4b;--sand:#f6ede1;--line:#e4e9ee;
  --shadow:0 1px 2px rgba(20,33,61,.04),0 8px 28px rgba(20,33,61,.07);
  --r:18px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;
  font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo","PingFang SC","Microsoft YaHei","Noto Sans JP","Noto Sans SC",Arial,sans-serif}
html[lang=ja] body{line-height:1.85;letter-spacing:.02em}
html[lang=zh] body{letter-spacing:.01em}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* header */
header{position:sticky;top:0;z-index:20;background:rgba(251,250,247,.86);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:22px;color:var(--ink);letter-spacing:-.2px}
.logo:hover{text-decoration:none}
.logo span{color:var(--brand)}
.logo svg{width:30px;height:30px;flex:none}
nav{display:flex;align-items:center;gap:26px}
nav a{color:var(--muted);font-size:15px;font-weight:500}
nav a:hover{color:var(--ink);text-decoration:none}
.right{display:flex;align-items:center;gap:14px}
.lang{display:inline-flex;background:#eef2f5;border-radius:999px;padding:3px}
.lang button{border:0;background:transparent;font:inherit;font-size:13px;font-weight:600;color:var(--muted);padding:6px 13px;border-radius:999px;cursor:pointer;transition:.15s}
.lang button:hover{color:var(--ink)}
.lang button.on{background:#fff;color:var(--brand-d);box-shadow:0 1px 4px rgba(20,33,61,.15)}
@media(max-width:820px){nav{display:none}}
@media(max-width:420px){.logo{font-size:19px}.lang button{padding:6px 10px}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:999px;font-weight:700;font-size:16px;border:1.5px solid transparent;transition:.18s;cursor:pointer}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(14,124,134,.28)}
.btn.primary:hover{background:var(--brand-d)}
.btn.ghost{border-color:#cfd8e0;color:var(--ink);background:#fff}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}

/* hero */
.hero{position:relative;overflow:hidden;padding:84px 0 96px;background:
  radial-gradient(900px 420px at 85% -10%,rgba(14,124,134,.13),transparent 70%),
  radial-gradient(700px 360px at 0% 10%,rgba(242,106,75,.10),transparent 70%),var(--bg)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-d);background:#e3f2f3;padding:6px 14px;border-radius:999px;margin-bottom:22px}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(242,106,75,.2)}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.15;margin:0 0 20px;letter-spacing:-.02em;font-weight:800}
html[lang=ja] .hero h1{font-size:clamp(28px,3.9vw,42px);line-height:1.4;letter-spacing:0;word-break:auto-phrase;line-break:strict}
.hero h1 em{white-space:nowrap}
html[lang=ja] .hero p.lead{word-break:auto-phrase}
html[lang=zh] .hero h1{line-height:1.3;letter-spacing:0}
.hero h1 em{font-style:normal;color:var(--brand);background:linear-gradient(transparent 68%,rgba(242,106,75,.28) 68%)}
.hero p.lead{font-size:18px;color:var(--muted);max-width:540px;margin:0 0 32px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.pills{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:34px;color:var(--muted);font-size:14px;font-weight:500}
.pills span{display:inline-flex;align-items:center;gap:7px}
.pills svg{width:18px;height:18px;color:var(--brand)}
@media(max-width:900px){.hero{padding:56px 0 64px}.hero .wrap{grid-template-columns:1fr;gap:40px}}

/* hero visual */
.visual{position:relative;height:430px}
.vcard{position:absolute;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:18px 20px}
.v1{top:10px;left:0;width:78%;z-index:2}
.v2{bottom:20px;right:0;width:80%;z-index:3}
.v3{top:132px;right:0;width:62%;z-index:1;background:var(--sand);border-color:#ecdcc6}
.vrow{display:flex;align-items:center;gap:14px}
.vic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;flex:none}
.vic svg{width:24px;height:24px}
.vic.t{background:#e3f2f3;color:var(--brand)}
.vic.o{background:#ffe9e3;color:var(--accent)}
.vcard b{display:block;font-size:15px;line-height:1.4}
.vcard small{display:block;color:var(--muted);font-size:13px;line-height:1.5}
.bar{height:6px;border-radius:9px;background:#e8eef2;margin-top:14px;overflow:hidden}
.bar i{display:block;height:100%;width:68%;background:linear-gradient(90deg,var(--brand),#35b6bf);border-radius:9px}
.chip{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:99px;background:#e3f2f3;color:var(--brand-d);margin-top:10px}
.chip.o{background:#ffe9e3;color:#c74a2e}
.stars{color:#f5a623;letter-spacing:2px;font-size:14px;margin-top:6px}
@media(max-width:900px){.visual{height:380px;max-width:480px;margin:0 auto;width:100%}}

/* sections */
section{padding:84px 0}
section.alt{background:var(--bg2)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.12em;margin-bottom:12px}
html[lang=ja] .eyebrow,html[lang=zh] .eyebrow{letter-spacing:.06em;text-transform:none}
h2{font-size:clamp(26px,3.4vw,38px);line-height:1.25;margin:0 0 12px;letter-spacing:-.01em}
.sub{color:var(--muted);font-size:17px;max-width:620px;margin:0 0 44px}
.grid{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px 28px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 2px 4px rgba(20,33,61,.05),0 16px 38px rgba(20,33,61,.1)}
.card .ic{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;background:#e3f2f3;color:var(--brand);margin-bottom:18px}
.card .ic.o{background:#ffe9e3;color:var(--accent)}
.card .ic svg{width:26px;height:26px}
.card h3{margin:0 0 8px;font-size:19px;line-height:1.4}
.card p{margin:0;color:var(--muted)}
.card ul{margin:0;padding:0;list-style:none}
.card li{color:var(--muted);padding:5px 0 5px 24px;position:relative}
.card li::before{content:"";position:absolute;left:2px;top:14px;width:9px;height:9px;border-radius:50%;background:var(--brand);opacity:.7}

.steps{counter-reset:s}
.steps .card{padding-top:70px;position:relative}
.steps .card::before{counter-increment:s;content:"0" counter(s);position:absolute;top:24px;left:28px;font-size:30px;font-weight:800;color:var(--brand);opacity:.28;line-height:1}

.cta{position:relative;overflow:hidden;text-align:center;color:#fff;border-radius:28px;padding:64px 24px;background:linear-gradient(135deg,#0a5f67,#0e7c86 55%,#2aa3a8)}
.cta::before{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta::after{content:"";position:absolute;left:-60px;bottom:-100px;width:240px;height:240px;border-radius:50%;background:rgba(242,106,75,.18)}
.cta h2,.cta .sub{position:relative;z-index:1;color:#fff}
.cta .sub{margin:0 auto 30px;opacity:.9}
.cta .btn{position:relative;z-index:1;background:#fff;color:var(--brand-d)}
.cta .btn:hover{background:#fff7f0}

footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:14px;background:#fff}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center}
footer a{color:var(--muted);margin-right:20px}
footer a:last-child{margin-right:0}
footer a:hover{color:var(--brand)}

/* legal docs */
.doc{max-width:780px;margin:0 auto;padding:56px 24px 90px}
.doc h1{font-size:36px;letter-spacing:-.01em}
.doc h2{font-size:21px;margin-top:34px}
.doc p,.doc li{color:#3d4b61}
.note{background:#fff6e0;border:1px solid #f0d58a;padding:12px 16px;border-radius:12px;color:#7a5a00;font-size:14px}

@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}