:root{--blue:#123b88;--blue2:#2464b5;--yellow:#ffc928;--orange:#ff8b1f;--ink:#17213a;--muted:#667085;--bg:#f3f6fb;--paper:#fff;--line:#d8dfeb;--green:#3aaa6d;--pink:#df6799;--shadow:0 18px 44px rgba(18,59,136,.12);--font:"Hiragino Sans GB","PingFang SC","Microsoft YaHei",sans-serif;--container:1220px;--reading:780px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;overflow-x:hidden;color:var(--ink);background:var(--bg);font-family:var(--font);font-size:16px;line-height:1.78;-webkit-font-smoothing:antialiased}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button{font:inherit}p,h1,h2,h3{margin-top:0}.container{width:min(calc(100% - 28px),var(--container));margin-inline:auto}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(255,201,40,.7);outline-offset:3px}
.site-header{position:sticky;z-index:40;top:0;border-bottom:1px solid var(--line);background:rgba(255,255,255,.96);backdrop-filter:blur(12px)}.header-inner{display:grid;grid-template-columns:auto 1fr auto;align-items:center;min-height:68px;gap:10px}.brand img{width:96px}.primary-nav{position:absolute;top:68px;right:14px;left:14px;display:none;padding:10px;border:2px solid var(--blue);background:var(--paper);box-shadow:var(--shadow)}.primary-nav.is-open{display:grid}.primary-nav a{padding:11px 12px;border-bottom:1px dashed var(--line);font-size:14px;font-weight:750}.primary-nav a:last-child{border-bottom:0}.primary-nav a:hover,.primary-nav a[aria-current=page]{color:var(--blue2);background:#eef5ff}.visit-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 14px;border:0;border-bottom:4px solid #c66a11;border-radius:4px;color:#fff;background:var(--orange);font-size:12px;font-weight:850;white-space:nowrap}.visit-link:hover{filter:brightness(.94)}.menu-toggle{position:relative;justify-self:end;width:44px;height:44px;padding:0;border:1px solid var(--blue);background:#fff}.menu-toggle:before,.menu-toggle:after{position:absolute;left:11px;width:20px;height:2px;background:var(--blue);content:""}.menu-toggle:before{top:16px}.menu-toggle:after{top:25px}.menu-toggle[aria-expanded=true]:before{top:21px;transform:rotate(45deg)}.menu-toggle[aria-expanded=true]:after{top:21px;transform:rotate(-45deg)}
.hero{padding:46px 0 62px;border-bottom:1px solid var(--line);background:linear-gradient(145deg,#edf4ff 0 58%,#fff8da 58%)}.hero-grid{display:grid;gap:34px;align-items:center}.kicker{display:inline-flex;margin-bottom:14px;padding:5px 10px;border:1px solid var(--blue);border-radius:999px;color:var(--blue);background:#fff;font-size:12px;font-weight:850;letter-spacing:.1em}.hero h1{max-width:12ch;margin-bottom:16px;font-size:clamp(34px,8vw,62px);line-height:1.12;letter-spacing:-.05em}.hero-copy>p:not(.kicker){max-width:39em;color:var(--muted)}.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}.hero-actions .visit-link{min-height:52px;padding-inline:22px;font-size:14px}.hero-note{max-width:20em;color:var(--muted);font-size:12px}.receipt{position:relative;padding:20px;border:2px solid var(--blue);background:#fff;box-shadow:10px 10px 0 rgba(255,201,40,.9)}.receipt:before{display:block;margin:-4px 0 15px;padding-bottom:10px;border-bottom:2px dashed var(--line);color:var(--blue);content:"DLsite / 数字内容入口";font-size:12px;font-weight:850}.receipt img{width:100%}.receipt small{display:block;margin-top:12px;color:var(--muted)}
.category-ribbon{background:#fff;border-bottom:1px solid var(--line)}.ribbon-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}.ribbon-item{padding:14px 8px;background:#fff;text-align:center;font-size:12px;font-weight:800}.ribbon-item:nth-child(1){border-top:5px solid var(--green)}.ribbon-item:nth-child(2){border-top:5px solid var(--blue2)}.ribbon-item:nth-child(3){border-top:5px solid var(--pink)}
.section{padding:64px 0;border-bottom:1px solid var(--line)}.section.white{background:#fff}.section-heading{max-width:780px;margin-bottom:28px}.section-heading h2{margin-bottom:10px;font-size:clamp(27px,5vw,40px);line-height:1.25;letter-spacing:-.035em}.section-heading p{color:var(--muted)}.catalog-list{display:grid;gap:10px}.catalog-row{display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:center;padding:18px;border:1px solid var(--line);background:#fff}.catalog-row b{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;color:#fff;background:var(--blue2)}.catalog-row h3{margin-bottom:3px;font-size:18px}.catalog-row p{margin-bottom:0;color:var(--muted);font-size:14px}.catalog-row:nth-child(2) b{background:var(--orange)}.catalog-row:nth-child(3) b{background:var(--green)}.catalog-row:nth-child(4) b{background:var(--pink)}
.split{display:grid;gap:32px;align-items:center}.split-copy h2{font-size:clamp(27px,5vw,40px);line-height:1.25;letter-spacing:-.035em}.split-copy p{color:var(--muted)}.screen-card{max-height:620px;padding:14px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);overflow:hidden}.screen-card.tall img{width:min(100%,360px);margin-inline:auto}.text-link{color:var(--blue2);font-weight:800;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}.check-list{display:grid;gap:0;margin:22px 0;padding:0;list-style:none;border-top:1px solid var(--blue)}.check-list li{padding:14px 0 14px 30px;border-bottom:1px dashed var(--line);color:var(--muted);position:relative}.check-list li:before{position:absolute;left:0;color:var(--orange);content:"✓";font-weight:900}.flow-grid{display:grid;gap:12px}.flow-card{padding:22px;border:1px solid var(--line);background:#fff}.flow-card span{color:var(--orange);font-size:12px;font-weight:900}.flow-card h3{margin:8px 0}.flow-card p{margin-bottom:0;color:var(--muted)}.notice{padding:24px;border:2px solid var(--blue);background:#fff8d8;box-shadow:6px 6px 0 var(--blue)}.notice strong{display:block;margin-bottom:8px;font-size:21px}.notice p{margin-bottom:0;color:var(--muted)}
.breadcrumb{padding-top:23px;color:var(--muted);font-size:13px}.breadcrumb a{color:var(--blue2);font-weight:800}.page-title{max-width:900px;padding:40px 0 54px}.page-title h1{margin-bottom:15px;font-size:clamp(32px,7vw,54px);line-height:1.12;letter-spacing:-.045em}.page-title>p:not(.kicker){max-width:48em;margin-bottom:0;color:var(--muted);font-size:18px}.article-body{width:min(calc(100% - 28px),var(--reading));margin-inline:auto;padding-bottom:68px}.content-section{padding:46px 0;border-top:1px solid var(--line)}.content-section h2{margin-bottom:18px;font-size:clamp(24px,4vw,32px);line-height:1.3}.content-section p,.content-section li{color:var(--muted)}.content-section ul,.content-section ol{display:grid;gap:8px;padding-left:22px}.content-image{margin:26px 0;padding:12px;border:1px solid var(--line);background:#fff}.content-image img{width:100%}.content-image.menu img{width:min(100%,390px);margin-inline:auto}.content-image figcaption{padding-top:10px;color:var(--muted);font-size:12px}.mini-grid{display:grid;gap:12px;margin-top:20px}.mini-card{padding:18px;border:1px solid var(--line);background:#fff;color:var(--muted)}.mini-card strong{display:block;margin-bottom:4px;color:var(--ink)}.note{margin:22px 0;padding:20px;border-left:5px solid var(--orange);background:#fff4e8;color:var(--muted)}.faq-group{padding:38px 0;border-top:1px solid var(--line)}.faq-group h2{font-size:26px}details{border-bottom:1px dashed var(--line)}summary{position:relative;padding:18px 40px 18px 0;cursor:pointer;font-weight:800;list-style:none}summary::-webkit-details-marker{display:none}summary:after{position:absolute;top:50%;right:4px;color:var(--blue2);content:"+";font-size:24px;transform:translateY(-50%)}details[open] summary:after{content:"−"}details p{padding:0 36px 18px 0;color:var(--muted)}
.site-footer{padding:38px 0;color:#fff;background:var(--blue)}.footer-inner{display:grid;gap:9px}.footer-brand{font-size:18px;font-weight:900}.site-footer p{max-width:760px;margin-bottom:0;color:#cddbf2;font-size:13px}
@media(prefers-reduced-motion:no-preference){.hero-copy,.receipt{animation:up .5s both}.receipt{animation-delay:.1s}}@keyframes up{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:760px){.container{width:min(calc(100% - 64px),var(--container))}.header-inner{min-height:76px}.brand img{width:122px}.menu-toggle{display:none}.primary-nav{position:static;display:flex;justify-content:center;padding:0;border:0;box-shadow:none}.primary-nav a{padding:10px;border:0}.hero{padding:76px 0 86px}.hero-grid{grid-template-columns:1fr 1fr;gap:7vw}.section{padding:88px 0}.catalog-row{grid-template-columns:54px 210px 1fr}.catalog-row h3,.catalog-row p{margin-bottom:0}.split{grid-template-columns:1fr 1fr;gap:7vw}.split.reverse .split-copy{order:2}.split.reverse .screen-card{order:1}.flow-grid{grid-template-columns:repeat(3,1fr)}.page-title{padding:54px 0 70px}.content-section{padding:58px 0}.mini-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1100px){.primary-nav a{padding-inline:14px}}@media(max-width:420px){.header-inner{grid-template-columns:auto auto 1fr}.menu-toggle{grid-column:2;grid-row:1}.visit-link{justify-self:end;padding-inline:9px;font-size:11px}.receipt{box-shadow:6px 6px 0 var(--yellow)}}