:root{
  --bg:#160A12;--surface:#20101A;--surface2:#2B1522;--ink:#F4E7ED;--ink2:#B79AA8;--line:#3F2333;
  --accent:#E0407A;--accent-soft:rgba(224,64,122,.14);--accent-deep:#6B1A43;--gold:#E3BE7A;
  --green:#06C755;--green-dark:#05A94A;
  --serif:"Shippori Mincho","Hiragino Mincho ProN","Yu Mincho","YuMincho",serif;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo",sans-serif;
  --wrap:1080px;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:calc(72px + env(safe-area-inset-top,0px));scroll-behavior:smooth;background:var(--bg)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.9;-webkit-text-size-adjust:100%;overflow-wrap:anywhere}
img{max-width:100%;height:auto}
a{color:var(--accent)}
::selection{background:var(--accent);color:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
h1,h2{font-family:var(--serif);font-weight:600;line-height:1.4;letter-spacing:.04em;margin:0;text-wrap:balance}
h3{font-family:var(--serif);font-size:1.15rem;font-weight:600;letter-spacing:.03em;margin:0 0 .5rem;line-height:1.5}
p{margin:0 0 1rem}
small{font-size:.8em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.note{font-size:.85rem;color:var(--ink2)}
.placeholder{background:rgba(255,214,102,.2);color:#FFE7A3;padding:0 .2em;border-radius:2px}

/* header */
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(22,10,18,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.site-header .wrap{display:flex;align-items:center;gap:14px;min-height:64px}
.brand{font-family:var(--serif);font-weight:600;font-size:1.15rem;color:var(--ink);text-decoration:none;white-space:nowrap;line-height:1.2;letter-spacing:.04em}
.brand small{display:block;font-family:var(--sans);font-weight:500;font-size:.7rem;color:var(--ink2);letter-spacing:.02em}
.r18{font-size:.68rem;font-weight:700;letter-spacing:.06em;color:var(--accent);border:1px solid var(--accent);border-radius:3px;padding:1px 6px;line-height:1.5}
.nav{margin-left:auto;display:flex;gap:2px;align-items:center}
.nav a{color:var(--ink);text-decoration:none;padding:8px 11px;border-radius:4px;font-size:.92rem;white-space:nowrap}
.nav a[aria-current="page"]{color:var(--accent);box-shadow:inset 0 -2px 0 var(--accent)}
.nav a:hover{background:var(--surface2)}
.nav .btn{margin-left:8px}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:6px;padding:8px 12px;font:inherit;font-size:.9rem;color:var(--ink);cursor:pointer}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:6px;font-weight:700;text-decoration:none;border:1px solid transparent;cursor:pointer;font-size:1rem;line-height:1.3;font-family:inherit}
.btn-line{background:var(--green);color:#fff}
.btn-line:hover{background:var(--green-dark)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--accent)}
.btn-ghost:hover{background:var(--accent-soft)}
.btn-sm{padding:9px 16px;font-size:.9rem}
.btn-lg{padding:16px 32px;font-size:1.08rem}

/* hero */
.hero{padding:72px 0 64px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(55% 60% at 18% 20%,rgba(224,64,122,.32),transparent 70%),radial-gradient(40% 50% at 85% 90%,rgba(227,190,122,.12),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(2rem,3.4vw + .8rem,3.3rem)}
.hero .lead{font-size:1.08rem;color:var(--ink2);margin:22px 0 28px;max-width:32em}
.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero .note{margin-top:16px}
.plan-plate{background:var(--surface);border:1px solid var(--accent);box-shadow:0 0 60px rgba(224,64,122,.18)}
.plate-head{background:var(--accent);color:#fff;padding:10px 16px;font-size:.85rem;display:flex;justify-content:space-between;gap:12px}
.plan-plate .row{display:grid;grid-template-columns:118px 1fr;grid-template-rows:auto auto;column-gap:16px;padding:14px 16px;border-bottom:1px solid var(--line);align-items:center}
.plan-plate .row:last-of-type{border-bottom:0}
.plan-plate .price{grid-row:1/3;font-family:var(--serif);font-size:1.7rem;font-weight:600;color:var(--gold);line-height:1.1;letter-spacing:.02em}
.plan-plate .price small{font-size:.8rem;font-family:var(--sans);font-weight:500;margin-left:2px}
.plan-plate .gpu{font-size:.8rem;color:var(--ink2);letter-spacing:.04em}
.plan-plate .desc{font-size:.95rem;line-height:1.5}
.plate-foot{padding:10px 16px;font-size:.78rem;color:var(--ink2);border-top:1px solid var(--line)}

/* sections */
.section{padding:64px 0;border-top:1px solid var(--line)}
.section.surface{background:var(--surface)}
.section-head{margin-bottom:32px;max-width:40em}
.section-head h2{font-size:clamp(1.5rem,1.6vw + .8rem,2.1rem)}
.section-head p{color:var(--ink2);margin:10px 0 0}
.section h3+p{color:var(--ink2)}
.more{margin-top:24px}

.page-head{padding:48px 0 40px;border-bottom:1px solid var(--line);background:var(--surface);position:relative;overflow:hidden}
.page-head::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 80% at 10% 0%,rgba(224,64,122,.25),transparent 70%);pointer-events:none}
.page-head .wrap{position:relative}
.page-head h1{font-size:clamp(1.8rem,2.4vw + .8rem,2.6rem)}
.page-head .lead{color:var(--ink2);margin:14px 0 0;max-width:40em}
.crumbs{font-size:.82rem;color:var(--ink2);margin:0 0 12px;padding:0;list-style:none;display:flex;gap:6px;flex-wrap:wrap}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--line)}
.crumbs a{color:var(--ink2);text-decoration:none}

/* lists */
.pain-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:20px 40px}
.pain-list li{border-left:3px solid var(--accent);padding:2px 0 2px 16px}
.pain-list strong{display:block;margin-bottom:2px;font-family:var(--serif);font-size:1.08rem;letter-spacing:.03em}
.pain-list span{color:var(--ink2);font-size:.95rem}
.answer{margin-top:32px;padding:20px 24px;background:var(--accent-soft);border-left:3px solid var(--accent);max-width:44em}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}
.cols-3>div{border-top:2px solid var(--accent);padding-top:16px}
.cols-2{display:grid;grid-template-columns:repeat(2,1fr);gap:36px}
.cols-2>div{border-top:2px solid var(--accent);padding-top:16px}
.feature-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:28px 36px}
.feature-list li{border-top:1px solid var(--line);padding-top:14px}
.feature-list strong{display:block;margin-bottom:4px;font-family:var(--serif);font-size:1.05rem;letter-spacing:.03em}
.feature-list span{color:var(--ink2);font-size:.95rem}
.steps{list-style:none;margin:0;padding:0;counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.steps li{counter-increment:step;position:relative;padding-top:12px;border-top:1px solid var(--line)}
.steps li::before{content:counter(step,decimal-leading-zero);font-family:var(--serif);font-size:1.6rem;font-weight:600;color:var(--accent);display:block;line-height:1;margin-bottom:10px}
.steps p{color:var(--ink2);font-size:.95rem;margin:0}
.steps.vertical{grid-template-columns:1fr;gap:20px}
.steps.vertical li{display:grid;grid-template-columns:56px 1fr;gap:8px;padding-top:16px}
.steps.vertical li::before{margin:0}
.steps.vertical h3{margin-bottom:4px}
.check{list-style:none;margin:0;padding:0}
.check li{padding-left:26px;position:relative;margin-bottom:8px}
.check li::before{content:"";position:absolute;left:0;top:.6em;width:12px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}

/* tables */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;background:var(--surface);font-size:.95rem}
th,td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
thead th{background:var(--accent-deep);color:#fff;font-weight:700}
tbody th{background:var(--surface2);font-weight:700;width:30%}
.spec-table tbody th{width:22%}
.spec-table thead th:nth-child(3){background:var(--accent)}
.trust-table tbody th{width:26%}
.price{font-family:var(--serif);font-size:1.6rem;font-weight:600;color:var(--gold);letter-spacing:.02em}
.price small{font-family:var(--sans);font-weight:400;font-size:.75rem;color:var(--ink2)}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tier{background:var(--surface);border:1px solid var(--line);padding:24px}
.tier.featured{border:1px solid var(--accent);box-shadow:0 0 60px rgba(224,64,122,.2)}
.tier h3{font-size:1.35rem;margin-bottom:2px}
.tier .for{font-size:.9rem;color:var(--ink);margin-bottom:16px;line-height:1.6}
.tier .price{display:block;margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.tier ul{margin:0 0 20px;padding-left:1.2em;font-size:.93rem;color:var(--ink2)}
.tier ul li{margin-bottom:4px}

/* faq */
.faq details{background:var(--surface);border:1px solid var(--line);border-bottom:0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:16px 48px 16px 20px;font-weight:700;list-style:none;position:relative;line-height:1.6}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";font-family:var(--serif);color:var(--accent);margin-right:10px}
.faq summary::after{content:"+";position:absolute;right:20px;top:14px;font-size:1.4rem;color:var(--ink2);line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 20px 18px 20px;color:var(--ink2);border-top:1px dashed var(--line);padding-top:14px}
.faq .a p:last-child{margin:0}

/* scenes */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding:28px 0;border-top:1px solid var(--line)}
.scene:first-of-type{border-top:0;padding-top:0}
.scene h3{font-size:1.3rem}
.scene .before,.scene .after{margin:0}
.scene .before{color:var(--ink2)}
.scene .after{padding:14px 18px;background:var(--accent-soft);border-left:3px solid var(--accent)}
.scene .before::before{content:"課題";display:block;font-size:.78rem;color:var(--ink2);margin-bottom:4px}
.scene .after::before{content:"導入後";display:block;font-size:.78rem;color:var(--accent);margin-bottom:4px}
.cases{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.case{background:var(--surface);border:1px solid var(--line);padding:24px}
.case .who{font-size:.82rem;color:var(--ink2);margin-bottom:8px}
.case blockquote{margin:0;font-family:var(--serif);font-size:1.1rem;line-height:1.7}
.case .meta{margin:14px 0 0;font-size:.85rem;color:var(--ink2)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.qr{background:#fff;border-radius:8px;max-width:280px;display:flex;align-items:center;justify-content:center;padding:20px;margin-bottom:12px}
.qr img{display:block;width:100%;height:auto}
.line-id{font-family:var(--serif);font-size:1.4rem;font-weight:600}

/* cta band */
.cta-band{background:var(--accent-deep);color:#fff;padding:64px 0;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 100% at 50% 100%,rgba(224,64,122,.45),transparent 70%);pointer-events:none}
.cta-band .wrap{position:relative}
.cta-band h2{font-size:clamp(1.5rem,1.6vw + .8rem,2.1rem);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.82);margin-bottom:24px}
.cta-band .small{margin:16px 0 0;font-size:.85rem}
.cta-band a:not(.btn){color:#fff}

/* legal */
.legal{max-width:44em}
.legal h2{font-size:1.25rem;margin:36px 0 10px}
.legal h2:first-child{margin-top:0}
.legal ul{padding-left:1.3em}

/* footer */
.site-footer{background:#0D0509;color:var(--ink2);padding:48px 0 calc(40px + env(safe-area-inset-bottom,0px));font-size:.9rem;border-top:1px solid var(--line)}
.site-footer .wrap{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:32px}
.site-footer .brand{color:var(--ink)}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:6px}
.site-footer a{color:var(--ink2);text-decoration:none}
.site-footer a:hover{color:var(--ink);text-decoration:underline}
.site-footer .copy{grid-column:1/-1;border-top:1px solid var(--line);padding-top:16px;margin-top:8px;font-size:.8rem}
.site-footer .age{color:var(--ink);font-weight:700}

/* floating cta (mobile) */
.float-cta{display:none}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:32px}
  .cols-3,.feature-list{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .tiers{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .site-footer .wrap{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .menu-btn{display:inline-block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--surface);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 20px 16px;gap:0;box-shadow:0 20px 40px rgba(0,0,0,.5)}
  .nav a{padding:12px 4px;border-bottom:1px solid var(--line);border-radius:0}
  .nav a[aria-current="page"]{box-shadow:none;border-bottom-color:var(--accent)}
  .nav .btn{margin:14px 0 0;border-bottom:0;padding:12px 20px}
  body.nav-open .nav{display:flex}
}
@media (max-width:600px){
  body{font-size:15px}
  .hero{padding:48px 0 44px}
  .section{padding:48px 0}
  .pain-list,.cols-3,.cols-2,.feature-list,.steps,.scene,.cases{grid-template-columns:1fr}
  .steps.vertical li{grid-template-columns:48px 1fr}
  .plan-plate .row{grid-template-columns:104px 1fr}
  .plan-plate .price{font-size:1.5rem}
  .site-footer .wrap{grid-template-columns:1fr}
  .float-cta{display:block;position:fixed;left:0;right:0;bottom:0;z-index:40;padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));background:rgba(22,10,18,.94);border-top:1px solid var(--line);backdrop-filter:blur(8px)}
  .float-cta .btn{width:100%}
  body{padding-bottom:76px}
  .cta-band{padding:48px 0}
}