:root{--bg:#0D0D0D;--deep:#070707;--panel:#171717;--panel2:#222;--title:#F2F2F2;--text:#C8C8C8;--muted:#9A9A9A;--faint:#6E6E6E;--silver:#C8C8C8;--silver2:#E8E8E8;--ink:#1A1A1A;--mist:#B85A5A;--line:rgba(232,232,232,.12);--line-strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.overlay-open{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}a,button{-webkit-tap-highlight-color:transparent}.wrap{width:min(calc(100% - 32px),var(--max));margin:0 auto}.fixed-shell{position:fixed;z-index:70;top:0;left:0;right:0}.inkline{height:22px;background:#090909;border-bottom:1px solid var(--line);font-size:12px;color:var(--silver)}.inkline-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-button,.drawer-trigger,.close-btn{border:0;background:transparent;color:inherit;cursor:pointer}.text-button{height:22px;padding:0 4px;color:var(--silver2)}.material-bar{height:60px;background:var(--ink);border-bottom:1px solid var(--line)}.material-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-lockup{justify-self:start;min-height:44px;display:flex;align-items:center}.brand-lockup img,.footer-brand img,.drawer-brand img{height:28px;width:auto;object-fit:contain}.brand-fallback{font-weight:700;font-size:16px;color:var(--silver2)}.drawer-trigger{height:44px;min-width:92px;border:1px solid var(--line-strong);border-radius:11px;padding:0 15px;display:inline-flex;align-items:center;justify-content:center;gap:10px;color:var(--silver2);background:#111}.drawer-trigger b{font-size:18px;font-weight:500}.app-link{justify-self:end;height:44px;padding:0 17px;display:inline-flex;align-items:center;border-radius:11px;background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-weight:700;white-space:nowrap}.case-tabs{height:40px;background:#101010;border-bottom:1px solid 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13px}.muted{color:var(--muted)}.cover-slot,.media-slot{background:var(--ink);border:1px solid var(--line);border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}.cover-slot{height:260px}.media-slot{height:180px}.media-slot.tall{height:200px}.media-slot.app-visual{height:360px}.cover-slot img,.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.cover-copy{text-align:center;max-width:820px;margin:24px auto 0}.cover-copy .brand-name{font-size:16px;color:var(--silver2);font-weight:700;letter-spacing:.08em}.button-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}.btn{min-height:42px;padding:0 17px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;white-space:nowrap;border:1px solid transparent}.btn.primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D}.btn.secondary{background:#111;color:var(--silver2);border-color:var(--line-strong)}.btn:hover{transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:2px solid var(--silver2);outline-offset:3px}.three-grid,.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature-card,.number-card,.faq-card,.policy-card,.note-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.feature-card .media-slot{margin-bottom:16px}.number{font-size:28px;line-height:1;color:var(--silver2);font-weight:700;letter-spacing:.06em}.number.small{font-size:20px}.editorial-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.editorial-copy{padding:22px}.index-list{display:grid;gap:10px}.index-row{display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:14px;padding:13px 0;border-bottom:1px solid var(--line)}.index-row:last-child{border-bottom:0}.index-row .idx{color:var(--silver2);font-weight:700}.index-row .go{color:var(--muted)}.shelf{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.shelf-item{min-height:150px;background:linear-gradient(180deg,#202020,#131313);border:1px solid var(--line);border-left:3px solid var(--silver);border-radius:10px;padding:18px;display:flex;flex-direction:column;justify-content:space-between}.shelf-item small{color:var(--muted)}.proof-list{display:grid;gap:12px}.proof-item{display:grid;grid-template-columns:70px 1fr;gap:14px;padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.proof-item .proof-no{font-size:30px;color:var(--silver2);font-weight:700}.timeline{position:relative;padding-left:28px}.timeline:before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:1px;background:var(--line-strong)}.timeline-item{position:relative;padding:0 0 22px 22px}.timeline-item:before{content:"";position:absolute;left:-24px;top:7px;width:10px;height:10px;border-radius:50%;background:var(--silver2);box-shadow:0 0 0 4px #171717}.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border:1px solid var(--line-strong);border-radius:999px;color:var(--silver2);font-size:12px;margin-bottom:7px}.memo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.memo{background:#151515;border:1px dashed var(--line-strong);border-radius:12px;padding:20px}.app-showcase{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px;align-items:center}.app-icon-line{display:flex;align-items:center;gap:12px;margin-bottom:14px}.app-icon-line img{width:48px;height:48px;object-fit:contain}.legal-strip{border-left:3px solid var(--mist);background:#151313;padding:18px;border-radius:0 12px 12px 0}.page-head{padding:44px 0 18px}.page-head-inner{display:grid;grid-template-columns:1fr 280px;gap:22px;align-items:end}.page-head .media-slot{height:170px}.lead{font-size:16px;color:var(--silver);max-width:800px}.content-stack{display:grid;gap:16px}.content-section{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px}.content-section p:last-child{margin-bottom:0}.two-col{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.method-steps{counter-reset:step;display:grid;gap:12px}.method-steps article{counter-increment:step;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px 18px 18px 64px;position:relative}.method-steps article:before{content:counter(step,decimal-leading-zero);position:absolute;left:18px;top:18px;color:var(--silver2);font-size:22px;font-weight:700}.list-lines{display:grid;gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}.list-lines article{padding:18px;background:var(--panel);border-bottom:1px solid var(--line)}.list-lines article:last-child{border-bottom:0}.policy-list{display:grid;gap:14px}.policy-row{display:grid;grid-template-columns:180px 1fr;gap:18px;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.faq-list{display:grid;gap:12px}.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}.faq-item h2{font-size:17px}.site-footer{background:var(--deep);border-top:1px solid var(--line);padding:34px 0 24px;margin-top:38px;font-size:13px}.footer-top{display:grid;grid-template-columns:240px 1fr;gap:28px}.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:7px}.footer-brand strong{font-size:16px;color:var(--silver2)}.footer-brand span{font-size:12px;color:var(--muted);letter-spacing:.12em}.footer-columns{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-columns div{display:flex;flex-direction:column;gap:6px}.footer-columns b{color:var(--silver2);margin-bottom:4px}.footer-columns a{color:var(--muted)}.footer-columns a:hover{color:var(--silver2)}.footer-note,.footer-copy{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted)}.footer-copy{margin-top:12px}.drawer-mask{position:fixed;z-index:90;inset:0;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.drawer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}.material-drawer{position:fixed;z-index:100;top:0;left:0;width:min(400px,86vw);height:100dvh;background:#111;border-right:1px solid var(--line-strong);box-shadow:var(--shadow);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s}.material-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:12px;color:var(--silver2);font-weight:700}.close-btn{min-width:54px;min-height:44px;color:var(--silver2)}.drawer-scroll{height:calc(100dvh - 76px);overflow:auto;padding:18px}.drawer-scroll section{margin-bottom:20px}.drawer-scroll h2{font-size:13px;color:var(--muted);letter-spacing:.14em;margin:0 0 8px}.drawer-scroll a{display:grid;grid-template-columns:78px 1fr;gap:10px;padding:11px 0;border-bottom:1px solid var(--line)}.drawer-scroll a b{color:var(--silver2);font-size:14px}.drawer-scroll a span{color:var(--muted);font-size:12px}.search-layer{position:fixed;z-index:95;top:82px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(calc(100% - 32px),720px);margin:12px auto 0;background:var(--ink);border:1px solid var(--line-strong);border-radius:14px;padding:20px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between;color:var(--silver2)}.search-card p{color:var(--muted)}.search-presets{display:flex;gap:10px;flex-wrap:wrap}.search-presets a{min-height:44px;padding:0 16px;display:inline-flex;align-items:center;border:1px solid var(--line-strong);border-radius:10px;color:var(--silver2);background:#111}.mobile-bottom{display:none}
@media(max-width:800px){body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}.wrap{width:min(calc(100% - 32px),var(--max))}.case-tabs{display:none}.site-main{padding-top:82px}.material-inner{grid-template-columns:1fr auto 1fr;gap:8px}.brand-lockup img{max-width:112px}.drawer-trigger{min-width:76px;padding:0 12px}.app-link{padding:0 12px}.section{padding:34px 0}.cover-slot{height:260px}.three-grid,.card-grid,.shelf,.two-col,.memo-grid{grid-template-columns:1fr}.editorial-grid,.app-showcase,.page-head-inner,.footer-top{grid-template-columns:1fr}.page-head-inner .media-slot{height:190px}.footer-columns{grid-template-columns:repeat(2,1fr)}.policy-row{grid-template-columns:1fr}.search-layer{top:0;bottom:0;background:#0b0b0b}.search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;padding:calc(24px + env(safe-area-inset-top)) 16px 24px;box-shadow:none}.search-presets{display:grid;grid-template-columns:repeat(2,1fr)}.search-presets a{justify-content:center}.mobile-bottom{position:fixed;z-index:65;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#0a0a0a;border-top:1px solid var(--line-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--silver);min-width:0}.mobile-bottom a.is-active{background:var(--silver2);color:#0D0D0D}.site-footer{margin-bottom:0}.index-row{grid-template-columns:42px 1fr}.index-row .go{display:none}.proof-item{grid-template-columns:52px 1fr}.material-drawer{width:min(400px,86vw)}}
@media(max-width:420px){.material-inner{gap:5px}.brand-lockup img{max-width:94px}.drawer-trigger{min-width:66px}.drawer-trigger span{font-size:13px}.app-link{font-size:13px;padding:0 10px}.footer-columns{grid-template-columns:1fr 1fr}.cover-copy{text-align:left}.button-row{justify-content:flex-start}}