:root{
    --bg:#E6E2DA;
    --deep-bg:#D4CFC6;
    --surface:#F4F1EA;
    --soft:#EBE7DF;
    --ink:#2C2A28;
    --text:#3A3732;
    --muted:#6A645C;
    --quiet:#8A847A;
    --elephant:#B8B3A8;
    --moss:#6A7A58;
    --clay:#A65A3A;
    --border:rgba(44,42,40,.14);
    --accent-border:rgba(166,90,58,.36);
    --shadow:0 12px 28px rgba(44,42,40,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
a:hover{color:var(--clay)}
button,input{font:inherit}
button{color:inherit}
img{display:block;max-width:100%}
.wrap{width:min(980px,calc(100% - 32px));margin:0 auto}
.narrow{max-width:760px}
.site-main{padding-top:120px;min-height:60vh}
.elephant-news{position:fixed;left:0;right:0;top:0;height:20px;background:var(--ink);color:var(--surface);z-index:70;font-size:12px}
.news-inner{height:20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.text-button{border:0;background:transparent;color:var(--surface);padding:0 4px;min-height:20px;cursor:pointer;font-size:12px}
.text-button:hover,.text-button:focus-visible{text-decoration:underline;text-decoration-color:var(--clay);text-underline-offset:3px;outline:none}
.elephant-header{position:fixed;left:0;right:0;top:20px;height:54px;background:var(--elephant);border-bottom:1px solid rgba(44,42,40,.24);z-index:70}
.header-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand-link{display:flex;align-items:center;min-height:44px;max-width:190px}
.brand-logo{height:24px;width:auto;object-fit:contain;object-position:left center}
.brand-fallback{font-size:16px;font-weight:700;letter-spacing:.08em;color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:6px}
.app-link,.drawer-trigger{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 14px;border:1px solid rgba(44,42,40,.18);background:rgba(244,241,234,.55);color:var(--ink);border-radius:8px;font-size:13px;cursor:pointer;white-space:nowrap}
.drawer-trigger{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.app-link:hover,.app-link:focus-visible,.drawer-trigger:hover,.drawer-trigger:focus-visible{outline:2px solid var(--clay);outline-offset:2px;color:inherit}
.elephant-step{position:fixed;left:0;right:0;top:74px;height:46px;background:var(--surface);border-bottom:1px solid var(--border);z-index:65}
.step-inner{height:46px;display:flex;align-items:stretch;justify-content:flex-start;gap:4px}
.step-link{display:inline-flex;align-items:center;gap:7px;min-height:44px;padding:0 16px;font-size:13px;color:var(--ink);position:relative}
.step-link span{font-size:12px;color:var(--clay)}
.step-link.is-current span{color:var(--ink)}
.step-link.is-current:after{content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;background:var(--clay)}
.step-link:hover,.step-link:focus-visible{background:var(--soft);color:var(--ink);outline:none}
.section-block{padding:58px 0}
.section-block.soft-bg{background:var(--soft)}
.section-block.deep-soft{background:var(--deep-bg)}
.section-heading{margin-bottom:22px;max-width:760px}
.eyebrow{display:inline-block;margin-bottom:8px;color:var(--clay);font-size:12px;font-weight:700;letter-spacing:.12em}
h1,h2,h3,p{margin-top:0}
h1{font-size:24px;line-height:1.3;color:var(--ink);letter-spacing:.01em;margin-bottom:14px}
h2{font-size:20px;line-height:1.4;color:var(--ink);margin-bottom:12px}
h3{font-size:16px;line-height:1.45;color:var(--ink);margin-bottom:8px}
p{margin-bottom:16px}
.lead{font-size:17px;line-height:1.65;color:var(--muted);margin-bottom:18px}
.big-number{font-size:72px;line-height:.9;font-weight:800;color:var(--clay);letter-spacing:-.06em;margin-bottom:18px}
.home-intro{padding-top:66px;padding-bottom:66px}
.button-row,.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:8px;font-size:14px;font-weight:700;white-space:nowrap;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.button.primary{background:linear-gradient(135deg,#B8B3A8 0%,#2C2A28 100%);color:var(--surface)}
.button.secondary{background:var(--surface);border-color:var(--clay);color:var(--ink)}
.button:hover,.button:focus-visible{transform:translateY(-1px);box-shadow:var(--shadow);outline:2px solid var(--clay);outline-offset:2px;color:inherit}
.text-link{display:inline-flex;align-items:center;min-height:44px;color:var(--clay);font-weight:700;text-decoration:underline;text-underline-offset:4px}
.media-slot{width:100%;height:180px;background:var(--elephant);border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin:18px 0 22px}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.compact-slot{height:180px;max-width:720px}
.frame-section .media-slot{height:180px}
.section-copy{max-width:820px}
.vertical-steps{display:flex;flex-direction:column;border-top:1px solid var(--border)}
.step-row{display:grid;grid-template-columns:74px 1fr;gap:24px;padding:28px 0;border-bottom:1px solid var(--border)}
.step-no{font-size:26px;font-weight:800;color:var(--clay);line-height:1}
.step-body{min-width:0}
.step-body p:last-child{margin-bottom:0}
.long-steps .step-row{padding:36px 0}
.long-steps .step-body{max-width:790px}
.quote-stack{display:flex;flex-direction:column;gap:18px}
.quote-card{margin:0;padding:26px;background:var(--surface);border-left:4px solid var(--clay);border-radius:8px;box-shadow:var(--shadow)}
.quote-card p{font-size:18px;line-height:1.7;color:var(--ink);margin-bottom:10px}
.quote-card footer{font-size:13px;color:var(--muted)}
.quote-image{height:180px;margin-top:0}
.large-quotes{gap:14px}
.quote-explain{padding:10px 28px 28px 36px;max-width:850px}
.two-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}
.info-card{background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:24px;box-shadow:var(--shadow)}
.info-card a{display:inline-flex;min-height:44px;align-items:center;color:var(--clay);font-weight:700}
.shelf-head{height:180px}
.timeline-image,.status-image{height:180px}
.period-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.period-list article{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:20px}
.period-list strong{display:block;color:var(--clay);margin-bottom:8px}
.status-bars{display:flex;flex-direction:column;gap:10px;margin:20px 0}
.status-bars>div{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:8px}
.status-bars span{color:var(--text)}
.status-bars b{font-size:13px;color:var(--moss);white-space:nowrap}
.product-section{background:var(--soft)}
.product-layout{display:grid;grid-template-columns:minmax(260px,.85fr) minmax(0,1.15fr);gap:42px;align-items:center}
.product-visual{min-width:0}
.app-portrait{height:320px;max-height:320px;background:var(--elephant)}
.app-icon-line{display:flex;align-items:center;gap:12px;margin-top:12px}
.icon-slot{width:48px;height:48px;background:var(--surface);border:1px solid var(--border);border-radius:9px;display:flex;align-items:center;justify-content:center;overflow:hidden;flex:0 0 48px}
.icon-slot img{width:48px;height:48px;object-fit:contain;object-position:center}
.app-icon-line strong,.app-icon-line span{display:block}
.app-icon-line span{font-size:13px;color:var(--muted)}
.prose-block{max-width:820px}
.prose-block p{max-width:800px}
.faq-preview details,.faq-list details{background:var(--surface);border:1px solid var(--border);border-radius:8px;margin-bottom:10px;padding:0 18px}
.faq-preview summary,.faq-list summary{min-height:52px;display:flex;align-items:center;cursor:pointer;font-weight:700;color:var(--ink)}
.faq-preview details p,.faq-list details p{padding-bottom:16px;margin-bottom:0;color:var(--text)}
.brand-end{border-top:1px solid var(--border)}
.page-hero{padding:62px 0 42px;background:var(--deep-bg);border-bottom:1px solid var(--border)}
.page-hero.frame-hero,.page-hero.timeline-hero,.page-hero.memo-hero,.page-hero.product-hero,.page-hero.about-hero{padding-bottom:54px}
.single-flow{max-width:860px}
.flow-block{padding:32px 0 32px 70px;border-bottom:1px solid var(--border);position:relative}
.flow-index{position:absolute;left:0;top:32px;font-size:26px;font-weight:800;color:var(--clay)}
.period-editorial{display:flex;flex-direction:column;gap:22px}
.period-panel{display:grid;grid-template-columns:130px 1fr;gap:30px;background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:28px;box-shadow:var(--shadow)}
.period-mark{font-size:22px;font-weight:800;color:var(--clay);padding-top:2px}
.period-summary{padding:30px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.status-page>article{max-width:820px;padding:24px 0;border-bottom:1px solid var(--border)}
.large-status{margin:28px 0}
.memo-list{display:flex;flex-direction:column;gap:14px}
.memo-card{display:grid;grid-template-columns:46px 1fr;gap:18px;background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:24px;box-shadow:var(--shadow)}
.check-mark{width:36px;height:36px;border-radius:50%;background:var(--moss);color:var(--surface);display:flex;align-items:center;justify-content:center;font-weight:800}
.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.method-section{background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:26px}
.method-section>span{display:inline-block;font-size:24px;font-weight:800;color:var(--clay);margin-bottom:8px}
.topic-list{display:flex;flex-direction:column}
.topic-row{display:grid;grid-template-columns:190px 1fr;gap:36px;padding:32px 0;border-bottom:1px solid var(--border)}
.topic-label{font-weight:800;color:var(--clay);font-size:17px}
.topic-footer{padding:36px 0;max-width:820px}
.centered-cards{max-width:820px}
.center-card{margin:0 auto 18px;background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:30px;text-align:center;box-shadow:var(--shadow)}
.center-card>span{display:inline-block;color:var(--clay);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:8px}
.center-card p{max-width:670px;margin-left:auto;margin-right:auto}
.mini-links{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:16px}
.mini-links a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border:1px solid var(--accent-border);border-radius:8px;color:var(--ink);background:var(--surface)}
.emphasis-card{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.emphasis-card h2,.emphasis-card p{color:var(--surface)}
.product-hero .product-layout{align-items:center}
.app-feature-list{display:flex;flex-direction:column;gap:0}
.app-feature-list article{display:grid;grid-template-columns:70px 1fr;gap:24px;padding:30px 0;border-bottom:1px solid var(--border)}
.feature-no{font-size:26px;font-weight:800;color:var(--clay)}
.install-sections{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.install-sections article{background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:26px}
.install-sections .button-row{grid-column:1/-1}
.legal-sections{max-width:840px}
.legal-sections article{padding:28px 0;border-bottom:1px solid var(--border)}
.help-panels{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.help-panels article{background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:26px}
.faq-list{max-width:860px}
.faq-list details{padding:0 22px;margin-bottom:12px}
.faq-list summary{min-height:58px;font-size:16px}
.contact-types{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.contact-types article{background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:26px;box-shadow:var(--shadow)}
.contact-types article>span{font-size:24px;font-weight:800;color:var(--clay)}
.contact-note{grid-column:1/-1}
.banner-slot{height:200px;background:var(--elephant)}
.brand-cover{height:240px;max-width:760px;margin-left:auto;margin-right:auto}
.about-flow{max-width:840px}
.about-flow>article{padding:28px 0;border-bottom:1px solid var(--border)}
.site-footer{background:#241F1C;color:#E6E2DA;border-top:1px solid var(--elephant);padding:44px 0 30px;font-size:13px}
.footer-brand-row{padding-bottom:24px;border-bottom:1px solid rgba(230,226,218,.18)}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand img{height:24px;width:auto;object-fit:contain;filter:none}
.footer-brand strong,.footer-brand span{display:block;color:#E6E2DA}
.footer-brand span{font-size:11px;letter-spacing:.12em;color:#B8B3A8}
.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:28px 0}
.footer-groups h2{font-size:13px;color:#F4F1EA;margin-bottom:10px}
.footer-groups a{display:block;color:#D4CFC6;padding:4px 0}
.footer-groups a:hover,.footer-groups a:focus-visible{color:#F4F1EA;text-decoration:underline;text-decoration-color:#A65A3A;outline:none}
.footer-note{border-top:1px solid rgba(230,226,218,.18);padding-top:20px;color:#B8B3A8}
.footer-note p{margin-bottom:8px}
.site-overlay{position:fixed;inset:0;background:rgba(36,31,28,.46);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease;z-index:90}
.site-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}
.elephant-drawer{position:fixed;left:0;top:0;bottom:0;width:320px;max-width:86vw;background:var(--surface);color:var(--ink);transform:translateX(-103%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;z-index:110;box-shadow:var(--shadow);display:flex;flex-direction:column}
.elephant-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{min-height:68px;padding:12px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px}
.drawer-brand{display:flex;align-items:center;gap:10px}
.drawer-brand img{height:24px;width:auto;object-fit:contain}
.drawer-brand strong{font-size:15px}
.icon-button{min-width:44px;min-height:44px;border:1px solid var(--border);background:var(--surface);color:var(--ink);border-radius:8px;cursor:pointer;padding:0 12px}
.icon-button:hover,.icon-button:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.drawer-scroll{overflow-y:auto;padding:10px 14px 28px}
.drawer-group{padding:12px 0;border-bottom:1px solid var(--border)}
.drawer-group h2{font-size:12px;color:var(--clay);letter-spacing:.12em;margin-bottom:6px}
.drawer-group a{display:block;padding:9px 8px;border-radius:7px}
.drawer-group a:hover,.drawer-group a:focus-visible{background:var(--soft);outline:none;color:var(--ink)}
.drawer-group strong,.drawer-group span{display:block}
.drawer-group strong{font-size:14px;color:var(--ink)}
.drawer-group span{font-size:12px;color:var(--muted);line-height:1.45;margin-top:2px}
.search-panel{position:fixed;left:0;right:0;top:74px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow);transform:translateY(-120%);opacity:0;visibility:hidden;pointer-events:none;transition:transform .2s ease,opacity .2s ease,visibility .2s ease;z-index:100}
.search-panel.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}
.search-card{padding:22px 0 26px}
.search-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}
.search-head h2{margin-bottom:8px}
.preset-links{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.preset-links a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border:1px solid var(--accent-border);border-radius:8px;background:var(--surface);color:var(--ink);font-weight:700}
.preset-links a:hover,.preset-links a:focus-visible{background:var(--soft);outline:2px solid var(--clay);outline-offset:1px;color:var(--ink)}
.search-note{font-size:13px;color:var(--muted);margin:8px 0 0}
.mobile-bar{display:none}

@media (max-width:760px){
    body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}
    .wrap{width:calc(100% - 32px)}
    .site-main{padding-top:74px}
    .elephant-step{display:none}
    .elephant-news{height:20px}
    .elephant-header{height:54px}
    .header-inner{height:54px}
    .brand-link{max-width:130px}
    .brand-logo{max-width:126px}
    .app-link,.drawer-trigger{padding:0 10px;font-size:12px}
    .header-actions{gap:4px}
    .section-block{padding:44px 0}
    .home-intro{padding-top:48px}
    .page-hero{padding:48px 0 34px}
    .big-number{font-size:58px}
    h1{font-size:24px}
    h2{font-size:20px}
    .two-cards,.method-grid,.install-sections,.help-panels,.contact-types{grid-template-columns:1fr}
    .period-list{grid-template-columns:1fr}
    .product-layout{grid-template-columns:1fr;gap:26px}
    .app-portrait{height:300px}
    .step-row{grid-template-columns:50px 1fr;gap:14px}
    .quote-explain{padding:8px 14px 24px 18px}
    .period-panel{grid-template-columns:1fr;gap:12px;padding:22px}
    .period-mark{font-size:18px}
    .topic-row{grid-template-columns:1fr;gap:10px;padding:28px 0}
    .memo-card{grid-template-columns:40px 1fr;gap:12px;padding:20px}
    .flow-block{padding-left:52px}
    .app-feature-list article{grid-template-columns:52px 1fr;gap:12px}
    .footer-groups{grid-template-columns:1fr 1fr;gap:18px}
    .site-footer{padding-bottom:78px}
    .mobile-bar{position:fixed;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(4,1fr);background:var(--surface);border-top:1px solid var(--border);z-index:80}
    .mobile-bar a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--ink)}
    .mobile-bar a.is-current{background:var(--ink);color:var(--surface)}
    .elephant-drawer{width:86vw;max-width:86vw}
    .search-panel{top:0;bottom:0;background:var(--ink);color:var(--surface);transform:translateY(-103%);overflow-y:auto}
    .search-panel.is-open{transform:translateY(0)}
    .search-card{padding-top:86px;padding-bottom:30px}
    .search-head h2,.search-head .eyebrow,.search-note{color:var(--surface)}
    .search-panel .icon-button{background:transparent;color:var(--surface);border-color:rgba(244,241,234,.3)}
    .preset-links a{background:transparent;color:var(--surface);border-color:rgba(244,241,234,.35)}
    .preset-links a:hover,.preset-links a:focus-visible{background:rgba(244,241,234,.08);color:var(--surface)}
    .contact-note{grid-column:auto}
    .install-sections .button-row{grid-column:auto}
}

@media (max-width:420px){
    .news-inner span{max-width:72%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .brand-fallback{font-size:15px}
    .app-link{padding:0 8px}
    .drawer-trigger{padding:0 9px}
    .footer-groups{grid-template-columns:1fr 1fr}
    .step-row{grid-template-columns:42px 1fr}
    .step-no,.feature-no{font-size:22px}
}
.grade-bands{display:flex;flex-direction:column;gap:14px}
.grade-bands article{padding:26px 28px;background:var(--surface);border:1px solid var(--border);border-radius:9px}
.grade-bands article:nth-child(even){margin-left:56px;background:var(--soft)}
.privacy-rails{display:flex;flex-direction:column;max-width:860px}
.privacy-rails article{display:grid;grid-template-columns:70px 1fr;gap:22px;padding:28px 0;border-bottom:1px solid var(--border)}
.privacy-no{font-size:24px;font-weight:800;color:var(--clay)}
@media (max-width:760px){.grade-bands article:nth-child(even){margin-left:0}.privacy-rails article{grid-template-columns:50px 1fr;gap:12px}}