:root{
  --brand:#1264a3; --brand-d:#0e4f86; --ink:#1d2630; --muted:#6b7682;
  --line:#e6ebf1; --bg:#f7f9fc; --green:#2a9d5b;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;color:var(--ink);background:#fff;line-height:1.7}
a{color:var(--brand);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:11px 22px;border-radius:11px;background:var(--brand);color:#fff;font-weight:700;font-size:14px;border:0;cursor:pointer}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink)}
.brand img{width:30px;height:30px;border-radius:8px}
.nav .links{margin-left:auto;display:flex;gap:22px;align-items:center}
.nav .links a{color:#46505b;font-size:14px;font-weight:600}
.nav .links a:hover{color:var(--brand)}
.nav .links a.btn{color:#fff}
.nav .links a.btn:hover{color:#fff}
@media(max-width:680px){.nav .links a:not(.btn){display:none}}
/* hero */
.hero{background:linear-gradient(160deg,#eef4fb,#fff 70%);padding:72px 0 64px;text-align:center}
.hero .logo{width:96px;height:96px;border-radius:24px;box-shadow:0 12px 36px rgba(18,95,165,.25);margin-bottom:22px}
.hero h1{font-size:42px;margin:0 0 10px;letter-spacing:.5px}
.hero .lead{font-size:18px;color:var(--muted);margin:0 auto 26px;max-width:620px}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
/* sections */
section{padding:64px 0}
section h2{font-size:28px;text-align:center;margin:0 0 8px}
section .sub{text-align:center;color:var(--muted);margin:0 0 40px}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:820px){.feat-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.feat-grid{grid-template-columns:1fr}}
.feat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
.feat .ic{width:42px;height:42px;border-radius:11px;background:#eaf2fb;color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:21px;margin-bottom:12px}
.feat h3{margin:0 0 6px;font-size:16px}
.feat p{margin:0;color:var(--muted);font-size:13.5px}
/* pricing */
.price-wrap{background:var(--bg)}
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:880px){.price-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.price-grid{grid-template-columns:1fr}}
.plan{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 18px;display:flex;flex-direction:column;position:relative}
.plan.pop{border-color:var(--green);box-shadow:0 10px 30px rgba(42,157,91,.12)}
.plan .tag{position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:var(--green);color:#fff;font-size:11px;font-weight:700;padding:3px 12px;border-radius:11px}
.plan .name{font-weight:800;font-size:17px}
.plan .price{font-size:26px;font-weight:800;color:var(--brand);margin:8px 0 2px}
.plan .price .per{font-size:13px;color:var(--muted);font-weight:600}
.plan .year{font-size:12px;color:var(--muted);margin-bottom:12px}
.plan ul{list-style:none;padding:0;margin:6px 0 18px;flex:1}
.plan li{padding-left:20px;position:relative;font-size:13px;color:#46505b;margin-bottom:8px}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}
.price-note{text-align:center;color:var(--muted);font-size:12.5px;margin-top:22px}
/* faq */
.faq{max-width:760px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:12px;padding:4px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;padding:12px 0;font-size:15px}
.faq p{color:var(--muted);margin:0 0 14px;font-size:14px}
/* footer */
footer{background:#0e1a26;color:#aeb8c2;padding:40px 0 28px;font-size:13px}
footer .cols{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between}
footer a{color:#cdd6df}
footer a:hover{color:#fff}
footer .fb{display:flex;align-items:center;gap:9px;color:#fff;font-weight:800;font-size:16px;margin-bottom:8px}
footer .fb img{width:26px;height:26px;border-radius:7px}
footer .flinks{display:flex;flex-direction:column;gap:7px}
footer .copy{margin-top:26px;border-top:1px solid #1e2c3a;padding-top:16px;color:#7d8893}
/* legal pages */
.legal{max-width:820px;margin:0 auto;padding:50px 20px 70px}
.legal h1{font-size:26px;margin:0 0 6px}
.legal .upd{color:var(--muted);font-size:13px;margin-bottom:24px}
.legal h2{font-size:18px;margin:30px 0 8px;border-top:1px solid var(--line);padding-top:22px}
.legal p,.legal li{font-size:14.5px;color:#3a444f}
.legal table{border-collapse:collapse;width:100%;margin:8px 0}
.legal th,.legal td{border:1px solid var(--line);padding:10px 12px;text-align:left;font-size:14px;vertical-align:top}
.legal th{background:var(--bg);width:34%;white-space:nowrap}
.fill{background:#fff3cd;padding:0 4px;border-radius:3px}
.backlink{display:inline-block;margin-bottom:20px;font-size:14px}
/* legal toggles */
.legal-toggles{padding:30px 0 56px}
.lt{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden}
.lt>summary{cursor:pointer;font-weight:700;font-size:16px;padding:16px 18px;list-style:none;display:flex;align-items:center}
.lt>summary::-webkit-details-marker{display:none}
.lt>summary::after{content:"＋";margin-left:auto;color:var(--muted);font-weight:400}
.lt[open]>summary::after{content:"−"}
.lt-body{padding:2px 18px 18px;border-top:1px solid var(--line)}
.lt-body .upd{color:var(--muted);font-size:12px;margin:12px 0 4px}
.lt-body h2{font-size:15px;margin:18px 0 6px;border:0;padding:0;text-align:left}
.lt-body p,.lt-body li{font-size:13.5px;color:#3a444f}
.lt-body table{border-collapse:collapse;width:100%}
.lt-body th,.lt-body td{border:1px solid var(--line);padding:8px 10px;font-size:13px;text-align:left;vertical-align:top}
.lt-body th{background:var(--bg);width:36%;white-space:nowrap}
/* tiny 特商法 in footer (black area) */
.toku-mini{margin-top:12px}
.toku-mini>summary{cursor:pointer;color:#6f7c88;font-size:11px;list-style:none;display:inline-block}
.toku-mini>summary::-webkit-details-marker{display:none}
.toku-mini>summary:hover{color:#cdd6df}
.toku-mini[open]>summary{color:#aeb8c2;margin-bottom:8px}
.toku-body{background:#0a131c;border:1px solid #1e2c3a;border-radius:8px;padding:10px 12px;max-width:780px}
.toku-body .upd{color:#5c6873;font-size:10px;margin:0 0 8px}
.toku-body table{border-collapse:collapse;width:100%}
.toku-body th,.toku-body td{border:1px solid #1e2c3a;padding:6px 8px;font-size:10.5px;color:#9aa7b3;text-align:left;vertical-align:top;line-height:1.6}
.toku-body th{width:34%;white-space:nowrap;color:#c2ccd6}
.toku-body .fill{background:#3a2f00;color:#e8c14a;padding:0 4px;border-radius:3px}

/* ===== scroll reveal ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
/* ===== decorative floating shapes ===== */
.deco{position:absolute;z-index:0;pointer-events:none;will-change:transform;animation:floaty 9s ease-in-out infinite}
.deco-circle{border-radius:50%;filter:blur(1px)}
.deco-square{border-radius:22%;transform:rotate(12deg);filter:blur(1px)}
.deco-spark{filter:drop-shadow(0 4px 10px rgba(0,0,0,.06))}
@keyframes floaty{0%,100%{margin-top:0}50%{margin-top:-16px}}
section .wrap,.hero .wrap{position:relative;z-index:1}
/* ===== install modal ===== */
.gi-ov{position:fixed;inset:0;background:rgba(10,20,32,.5);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;transition:opacity .25s;padding:18px}
.gi-ov.show{opacity:1}
.gi-box{background:#fff;border-radius:18px;max-width:380px;width:100%;padding:26px 24px 22px;text-align:center;box-shadow:0 24px 70px rgba(0,0,0,.4);transform:translateY(12px);transition:transform .25s}
.gi-ov.show .gi-box{transform:none}
.gi-box .gi-x{position:absolute;margin:-14px 0 0 320px;background:none;border:0;font-size:20px;color:#aab;cursor:pointer}
.gi-logo{width:64px;height:64px;border-radius:16px;margin-bottom:12px}
.gi-box h3{margin:0 0 6px;font-size:19px}
.gi-box p{margin:0 0 18px;color:var(--muted);font-size:13.5px;line-height:1.7}
.gi-btn{display:block;width:100%;padding:12px;border-radius:11px;border:0;font-size:14px;font-weight:700;cursor:pointer;margin-bottom:10px;background:#eef2f6;color:#2a333d}
.gi-btn.gi-primary{background:var(--brand);color:#fff}
.gi-btn.gi-primary:hover{background:var(--brand-d)}
.gi-btn.gi-ghost{background:#fff;border:1px solid var(--line);color:#46505b}
.gi-note{font-size:11px;color:#9aa3ac;margin-top:4px}
/* ===== language switch (header) ===== */
.lang-switch{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-left:6px}
.lang-switch a{padding:5px 9px;font-size:12px;font-weight:700;color:#8a929b}
.lang-switch a.on{background:var(--brand);color:#fff}