:root{
  --bg:#06101d;
  --panel:#0d1b2e;
  --panel-2:#122641;
  --line:rgba(133,213,238,.18);
  --ice:#70e4ff;
  --ice-2:#a7f2ff;
  --white:#f3fbff;
  --muted:#9fb4c9;
  --ink:#dcecf7;
  --accent:#37b6ff;
  --shadow:0 30px 70px rgba(0,0,0,.36);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Yu Gothic UI","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.side-nav{position:fixed;z-index:20;left:0;top:0;bottom:0;width:184px;padding:28px 22px;background:rgba(6,16,29,.86);backdrop-filter:blur(14px);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:46px}
.brand{font-size:24px;font-weight:950;letter-spacing:.16em;color:var(--ice)}
.side-nav nav{display:grid;gap:18px}
.side-nav nav a{font-size:14px;color:var(--muted);font-weight:800}
.side-nav nav a:hover{color:var(--ice)}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:0;background:transparent;cursor:pointer;padding:0;position:relative}
.nav-toggle span{position:absolute;left:11px;right:11px;height:2px;background:var(--ice-2);border-radius:2px;transition:transform .25s ease,opacity .2s ease,top .25s ease}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.page{margin-left:184px}
.hero{position:relative;min-height:100vh;display:grid;align-items:end;overflow:hidden}
.hero-slide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.02);transition:opacity 900ms ease,transform 6200ms ease}
.hero-slide.is-active{opacity:1;transform:scale(1)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,16,29,.9),rgba(6,16,29,.55) 52%,rgba(6,16,29,.18)),linear-gradient(0deg,rgba(6,16,29,.95),transparent 38%)}
.hero-copy{position:relative;width:min(740px,calc(100% - 60px));padding:110px 0 140px clamp(34px,7vw,96px)}
.eyebrow,.section-kicker{font-size:12px;letter-spacing:.22em;font-weight:950;color:var(--ice);text-transform:uppercase}
.hero h1{font-size:clamp(46px,7.4vw,88px);line-height:1.02;margin:18px 0 22px;letter-spacing:0;color:var(--white)}
.hero p:not(.eyebrow){font-size:18px;color:#bfd0dd;max-width:610px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 24px;border-radius:6px;font-weight:950;border:0;cursor:pointer;font-size:15px}
.btn-primary{background:var(--ice);color:#04111e;box-shadow:0 14px 34px rgba(112,228,255,.24)}
.btn-ghost{background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--ice-2)}
.metric-panel{position:absolute;right:34px;bottom:34px;display:grid;grid-template-columns:repeat(3,150px);background:rgba(9,23,40,.76);backdrop-filter:blur(16px);border:1px solid var(--line);box-shadow:var(--shadow)}
.metric-panel div{padding:22px;border-right:1px solid var(--line)}
.metric-panel div:last-child{border-right:0}
.metric-panel span{display:block;font-size:11px;letter-spacing:.18em;color:var(--muted);font-weight:900}
.metric-panel strong{display:block;font-size:24px;color:var(--white);line-height:1.25;margin-top:6px}
.section{padding:96px clamp(28px,6vw,88px)}
.logic-section{background:linear-gradient(180deg,#06101d,#0a1829)}
.split-title{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:end;margin-top:10px}
h2{font-size:clamp(30px,4.6vw,54px);line-height:1.12;margin:0;color:var(--white);letter-spacing:0}
.checkout-copy h1{font-size:clamp(34px,5vw,58px);line-height:1.08;margin:8px 0 18px;color:var(--white);letter-spacing:0}
.split-title p,.product-spec p,.operation-copy p,.contact-section p{color:var(--muted);font-size:17px}
.logic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:52px}
.logic-grid article,.compare-grid article{background:var(--panel);border:1px solid var(--line);padding:30px;border-radius:6px}
.logic-grid span{font-size:34px;font-weight:950;color:var(--ice);opacity:.72}
.logic-grid h3,.compare-grid h3{font-size:21px;color:var(--ice-2);margin:14px 0 8px}
.logic-grid p,.compare-grid p{color:var(--muted);margin:0}
.product-section{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;background:radial-gradient(600px 260px at 80% 20%,rgba(55,182,255,.14),transparent),#081525}
.buy-section{display:grid;grid-template-columns:.95fr 1.05fr;gap:34px;align-items:center;background:#071426}
.buy-section p:not(.section-kicker){color:var(--muted)}
.buy-card{background:var(--panel);border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow);padding:34px}
.buy-card span{display:block;color:var(--muted);font-weight:950}
.buy-card strong{display:block;color:var(--ice);font-size:50px;line-height:1;margin:8px 0}
.buy-card small{display:block;color:var(--muted);margin-bottom:24px}
.buy-card label{display:block;margin-top:14px;font-size:14px;font-weight:950;color:var(--muted)}
.buy-card input,.buy-card select{width:100%;margin-top:7px;border:1.5px solid var(--line);border-radius:6px;padding:12px 14px;font:inherit;color:var(--ink);background:#071426}
.buy-card input:focus,.buy-card select:focus{outline:none;border-color:var(--ice)}
.buy-notes{display:grid;gap:10px;list-style:none;margin:24px 0;padding:0}
.buy-notes li{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:6px;padding:12px 14px;font-weight:850;color:var(--ice-2)}
.buy-notes li::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ice);margin-right:10px}
.buy-total{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:20px 0;padding:16px;border-radius:6px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.buy-total span{margin:0;color:var(--muted)}
.buy-total strong{font-size:30px;margin:0;white-space:nowrap}
.buy-actions{display:flex;flex-wrap:wrap;gap:12px}
.text-link{display:inline-flex;align-items:center;color:var(--ice);font-weight:950}
.checkout-section{background:#081525}
.checkout-copy{max-width:780px;margin-bottom:32px}
.checkout-copy p:not(.section-kicker){color:var(--muted)}
.checkout-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:start}
.checkout-form,.checkout-summary{background:var(--panel);border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow);padding:30px}
.checkout-form{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.checkout-form label{display:block;font-size:14px;font-weight:950;color:var(--muted)}
.checkout-form input,.checkout-form select,.checkout-form textarea{width:100%;margin-top:7px;border:1.5px solid var(--line);border-radius:6px;padding:12px 14px;font:inherit;color:var(--ink);background:#071426}
.checkout-form input:focus,.checkout-form select:focus,.checkout-form textarea:focus{outline:none;border-color:var(--ice)}
.checkout-summary{display:grid;gap:16px;position:sticky;top:30px}
.summary-row{display:flex;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.summary-row span{color:var(--muted);font-weight:900}
.summary-row strong{color:var(--ice-2);font-size:20px}
.checkout-summary p{margin:0;color:var(--muted)}
.thanks-section{background:#081525}
.thanks-hero{max-width:780px;margin-bottom:32px}
.thanks-hero h1{font-size:clamp(38px,6vw,66px);line-height:1.05;margin:8px 0 18px;color:var(--white)}
.thanks-hero p:not(.section-kicker){color:var(--muted);font-size:18px}
.thanks-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px;align-items:stretch}
.thanks-panel{background:var(--panel);border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow);padding:30px}
.thanks-panel span{display:block;color:var(--muted);font-weight:950}
.thanks-panel strong{display:block;color:var(--ice);font-size:34px;line-height:1.15;margin:10px 0 14px}
.thanks-panel p{margin:0;color:var(--muted)}
.next-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.next-steps article{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:22px}
.next-steps h2{font-size:20px;margin:0 0 8px;color:var(--ice-2)}
.next-steps p{margin:0;color:var(--muted)}
.thanks-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.policy-section{background:#081525}
.policy-head{max-width:820px;margin-bottom:34px}
.policy-head h1{font-size:clamp(36px,5vw,60px);line-height:1.08;margin:8px 0 18px;color:var(--white);letter-spacing:0}
.policy-head p:not(.section-kicker){color:var(--muted);font-size:18px}
.policy-list{display:grid;gap:14px}
.policy-list article{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:26px}
.policy-list h2{font-size:22px;line-height:1.35;margin:0 0 10px;color:var(--ice-2)}
.policy-list p{margin:0;color:var(--muted)}
.policy-list p + p{margin-top:10px}
.policy-list ul{margin:0;padding-left:1.2em;color:var(--muted)}
.policy-list li + li{margin-top:6px}
.policy-date{font-weight:950;color:var(--ice-2)!important}
.product-spec dl{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:34px 0 0}
.product-spec div{border:1px solid var(--line);background:rgba(255,255,255,.025);border-radius:6px;padding:18px}
.product-spec dt{color:var(--muted);font-size:12px;font-weight:900;letter-spacing:.16em}
.product-spec dd{margin:4px 0 0;color:var(--white);font-weight:950;font-size:20px}
.spec-card{min-height:430px;border:1px solid rgba(112,228,255,.35);border-radius:6px;background:linear-gradient(145deg,rgba(112,228,255,.22),rgba(18,38,65,.92));box-shadow:var(--shadow),inset 0 0 80px rgba(112,228,255,.18);display:flex;flex-direction:column;justify-content:flex-end;padding:36px;overflow:hidden;position:relative}
.spec-card::before{content:"";position:absolute;inset:-30% 50% -30% -10%;background:linear-gradient(110deg,rgba(255,255,255,.45),transparent);transform:rotate(16deg)}
.spec-card span,.spec-card strong,.spec-card small{position:relative}
.spec-card span{letter-spacing:.22em;color:var(--ice);font-weight:950}
.spec-card strong{font-size:44px;color:#fff;line-height:1;margin-top:10px}
.spec-card small{color:var(--muted);font-weight:800;margin-top:8px}
.spec-card .btn{position:relative;margin-top:24px;align-self:flex-start}
.target-section{background:#071426}
.target-layout{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch;margin-top:46px}
.target-layout img{width:100%;height:100%;min-height:440px;object-fit:cover;border-radius:6px;border:1px solid var(--line);box-shadow:var(--shadow)}
.target-list{display:grid;gap:14px}
.target-list article,.delivery-grid article{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:24px}
.target-list h3,.delivery-grid h3{margin:0 0 8px;color:var(--ice-2);font-size:21px}
.target-list p,.delivery-grid p{margin:0;color:var(--muted)}
.target-list a{display:inline-flex;margin-top:14px;color:var(--ice);font-weight:950}
.operation-section{display:grid;grid-template-columns:1.08fr .92fr;min-height:640px;background:#050b14}
.operation-section img{width:100%;height:100%;object-fit:cover}
.operation-copy{padding:clamp(36px,6vw,88px);align-self:center}
.ops-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:30px}
.ops-list span{border:1px solid var(--line);background:rgba(255,255,255,.03);border-radius:6px;padding:12px;font-weight:850;color:var(--ice-2)}
.freeze-section{position:relative;min-height:min(78vh,640px);display:grid;align-items:end;overflow:hidden;background:#050b14}
.freeze-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.freeze-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,16,29,.88),rgba(6,16,29,.5) 55%,rgba(6,16,29,.14)),linear-gradient(0deg,rgba(6,16,29,.92),transparent 46%)}
.freeze-copy{position:relative;padding:clamp(40px,7vw,92px);max-width:660px}
.freeze-copy h2{margin:14px 0 16px}
.freeze-copy p:not(.section-kicker){color:#cdddea;font-size:17px;margin:0 0 26px}
@media(prefers-reduced-motion:reduce){.freeze-video{display:none}.freeze-section{background:#050b14 center/cover no-repeat url(assets/freeze-poster.jpg)}}
.gallery-section{background:linear-gradient(180deg,#0a1829,#071426)}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:46px}
.gallery-grid figure{margin:0;position:relative;border-radius:6px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.gallery-grid img{display:block;width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform 600ms ease}
.gallery-grid figure:hover img{transform:scale(1.05)}
.gallery-grid figcaption{position:absolute;left:0;right:0;bottom:0;padding:16px 16px 12px;font-size:14px;font-weight:850;letter-spacing:.02em;color:#fff;background:linear-gradient(0deg,rgba(4,11,20,.86),rgba(4,11,20,.35) 60%,transparent)}
.gallery-note{margin-top:20px;font-size:12px;color:var(--muted);line-height:1.7}
.usecase-section{background:#071426}
.usecase-table{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin-top:44px;background:var(--line);border:1px solid var(--line)}
.usecase-table div{background:#071426;padding:26px;display:grid;gap:8px}
.usecase-table strong{color:var(--ice-2);font-size:20px}
.usecase-table span{color:var(--muted)}
.compare-section{background:#09192b}
.compare-section h2{max-width:820px;margin-top:10px}
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
.delivery-section{background:#071426}
.delivery-section h2,.legal-section h2{max-width:820px;margin-top:10px}
.delivery-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:36px}
.legal-section{background:#09192b}
.faq-section{background:#081525}
.faq-section h2{max-width:820px;margin-top:10px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:36px}
.faq-grid details{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:20px 22px}
.faq-grid summary{cursor:pointer;font-weight:950;color:var(--ice-2)}
.faq-grid p{color:var(--muted);margin:12px 0 0}
.contact-section{display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;align-items:start;background:#06101d}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:30px;box-shadow:var(--shadow)}
.contact-form label{font-size:14px;font-weight:900;color:var(--muted)}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;margin-top:7px;border:1.5px solid var(--line);border-radius:6px;padding:12px 14px;font:inherit;color:var(--ink);background:#071426}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--ice)}
.contact-cta article{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:6px;padding:24px}
.contact-cta h3{margin:0 0 8px;color:var(--ice-2);font-size:22px}
.contact-cta p{margin:0;color:var(--muted)}
.full{grid-column:1/-1}
/* ---------- Ice atmosphere ---------- */
:root{--flake:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round'><path d='M16 2v28M4.2 9l23.6 14M27.8 9L4.2 23'/><path d='M16 8.5l-3.6-3.4M16 8.5l3.6-3.4M16 23.5l-3.6 3.4M16 23.5l3.6 3.4'/><path d='M7.6 11l.5-4.8M7.6 11l-4.8-.5M24.4 21l-.5 4.8M24.4 21l4.8 .5M24.4 11l4.8-.5M24.4 11l-.5-4.8M7.6 21l-4.8 .5M7.6 21l.5 4.8'/></svg>")}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px}
.eyebrow::before,.section-kicker::before{content:"";width:15px;height:15px;flex:none;background:currentColor;-webkit-mask:var(--flake) center/contain no-repeat;mask:var(--flake) center/contain no-repeat}
/* frosted-glass cards */
.logic-grid article,.compare-grid article,.target-list article,.delivery-grid article,.faq-grid details{
  background:linear-gradient(157deg,rgba(112,228,255,.10),rgba(18,38,65,.55));
  border-color:rgba(133,213,238,.30);
  -webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(226,248,255,.16)
}
.logic-grid article{position:relative;overflow:hidden}
.logic-grid article::after{content:"";position:absolute;inset:-40% 55% auto -20%;height:70%;background:radial-gradient(closest-side,rgba(167,242,255,.20),transparent);pointer-events:none}
/* cold light accents on plain sections */
.usecase-section,.delivery-section,.faq-section,.legal-section{background-image:radial-gradient(560px 260px at 88% -12%,rgba(55,182,255,.10),transparent)}
/* frosted hairline between sections */
.section{position:relative}
.section::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(133,213,238,.35),transparent)}
/* ambient frost particle layer (canvas built in site.js) */
.frost-layer{position:fixed;inset:0;z-index:5;pointer-events:none;mix-blend-mode:screen}
@media(prefers-reduced-motion:reduce){.frost-layer{display:none}}

@media(max-width:980px){
  .side-nav{position:fixed;right:0;bottom:auto;width:auto;height:64px;flex-direction:row;align-items:center;padding:0 20px}.side-nav nav{display:none}.nav-toggle{display:flex}.side-nav.is-open nav{display:grid;position:absolute;top:64px;left:0;right:0;background:#0b1826;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:8px 0;gap:0}.side-nav.is-open nav a{padding:13px 20px;font-size:15px}.side-nav.is-open .nav-toggle span:nth-child(1){top:21px;transform:rotate(45deg)}.side-nav.is-open .nav-toggle span:nth-child(2){opacity:0}.side-nav.is-open .nav-toggle span:nth-child(3){top:21px;transform:rotate(-45deg)}.page{margin-left:0}.brand{font-size:20px}.hero-copy{padding:120px 24px 180px;width:100%}.metric-panel{left:20px;right:20px;grid-template-columns:1fr;bottom:20px}.metric-panel div{border-right:0;border-bottom:1px solid var(--line)}.metric-panel div:last-child{border-bottom:0}.split-title,.logic-grid,.buy-section,.checkout-layout,.checkout-form,.thanks-layout,.next-steps,.product-section,.target-layout,.operation-section,.usecase-table,.compare-grid,.delivery-grid,.faq-grid,.contact-section,.contact-form{grid-template-columns:1fr}.operation-section img{height:420px}.target-layout img{min-height:320px}.checkout-summary{position:static}.product-spec dl,.ops-list{grid-template-columns:1fr}.section{padding:72px 24px}.gallery-grid{grid-template-columns:repeat(2,1fr);gap:12px}
}