:root{--bg:#FFF7FA;--deep:#fff;--soft:#FFEAF2;--ink:#4A1630;--text:#5C2A3E;--muted:#8A4A62;--assist:#B07A90;--pink:#E85A8B;--bright:#FF7AA8;--dark:#C43B6E;--pale:#FFE1EC;--border:rgba(232,90,139,.16);--shadow:0 14px 34px rgba(196,59,110,.10);--wrap:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}html.layer-open{overflow:hidden}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(var(--wrap),calc(100% - 32px));margin:auto}.site-header{position:fixed;z-index:50;top:0;left:0;right:0}.core-line{height:18px;background:var(--dark);color:#fff;font-size:11px}.core-inner,.box-inner,.sign-inner{height:100%;display:flex;align-items:center}.core-inner{justify-content:space-between}.micro-brand{font-weight:700;letter-spacing:.03em}.text-button,.drawer-trigger{border:0;background:transparent;color:inherit;font:inherit;cursor:pointer}.text-button{color:#fff;padding:0 8px}.box-bar{height:60px;background:#fff;border-bottom:1px solid var(--border)}.box-inner{display:grid;grid-template-columns:1fr auto 1fr;gap:16px}.brand-home{justify-self:start;display:flex;align-items:center;min-width:0}.brand-logo,.drawer-logo,.footer-logo{object-fit:contain;object-position:left center}.brand-logo{height:36px;max-width:180px}.brand-text{font-weight:900;font-size:20px;color:var(--ink)}.drawer-trigger{justify-self:center;min-height:44px;padding:8px 18px;border:1px solid var(--border);border-radius:12px;color:var(--dark);background:var(--pale);font-weight:800}.app-link{justify-self:end;display:inline-flex;align-items:center;min-height:44px;color:var(--dark);font-weight:800}.sign-row{height:40px;background:var(--soft);border-bottom:1px solid var(--border)}.sign-inner{gap:8px}.sign-inner a{padding:6px 10px;border-radius:8px;color:var(--ink);font-size:14px}.sign-inner a.is-active{background:var(--dark);color:#fff}.site-main{padding-top:118px;min-height:60vh}.hero,.page-hero{padding:28px 0 16px}.page-hero h1,.hero h1{margin:.2em 0 .35em;color:var(--ink);font-size:clamp(28px,4vw,32px);line-height:1.25}.eyebrow{font-size:13px;font-weight:800;color:var(--dark);letter-spacing:.08em}.lead{max-width:840px;font-size:18px}.media-slot{background:var(--pale);border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center;background:#fff}.hero-media{max-height:300px;aspect-ratio:16/9}.hero-media img{max-height:300px}.buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 18px;border-radius:12px;font-weight:800;border:1px solid var(--border)}.button.primary{background:linear-gradient(135deg,#FF7AA8 0%,#E85A8B 55%,#C43B6E 100%);color:#fff;border:0}.button.secondary{background:#fff;color:var(--dark)}.section{padding:24px 0}.section h2{font-size:24px;line-height:1.35;color:var(--ink);margin:0 0 8px}.section-intro{color:var(--muted);max-width:820px;margin:0 0 18px}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:18px}.card .card-media{height:200px;margin:-2px -2px 14px;border-radius:14px;background:var(--pale);overflow:hidden}.card .card-media img{width:100%;height:100%;object-fit:contain;background:#fff}.card h3{margin:.3em 0;color:var(--ink);font-size:20px}.card p{margin:0}.number-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.number-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px}.num{font-size:42px;line-height:1;color:var(--pink);font-weight:900}.state-grid,.steps,.books,.letter-grid,.method-grid,.article-grid{display:grid;gap:14px}.state-grid{grid-template-columns:repeat(4,1fr)}.state-card{background:var(--soft);border:1px solid var(--border);padding:18px;border-radius:16px}.steps{grid-template-columns:repeat(5,1fr)}.step{background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px}.books{grid-template-columns:repeat(4,1fr)}.book{background:#fff;border-left:5px solid var(--pink);border-radius:14px;padding:18px;min-height:180px;box-shadow:var(--shadow)}.letter-grid{grid-template-columns:1fr 1fr}.letter{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px}.editor-note{font-size:13px;font-weight:800;color:var(--dark)}.method-grid{grid-template-columns:repeat(4,1fr)}.method{background:var(--pale);border-radius:16px;padding:18px}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px}.prose{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;box-shadow:var(--shadow)}.prose h2{color:var(--ink);font-size:22px;margin:1.35em 0 .45em}.prose h2:first-child{margin-top:0}.prose h3{color:var(--ink);font-size:18px}.prose p{margin:.75em 0}.side-card{background:var(--soft);border:1px solid var(--border);border-radius:18px;padding:18px;height:max-content;position:sticky;top:138px}.side-card a{display:block;padding:8px 0;color:var(--dark);font-weight:700}.section-media{height:240px;margin-bottom:18px}.app-showcase{display:grid;grid-template-columns:360px 1fr;gap:24px;align-items:center}.app-media{height:420px}.icon-row{display:flex;align-items:center;gap:14px}.app-icon{width:64px;height:64px;border-radius:16px;object-fit:contain;background:#fff;border:1px solid var(--border)}.faq-list details{background:#fff;border:1px solid var(--border);border-radius:16px;padding:14px 18px;margin:12px 0}.faq-list summary{cursor:pointer;color:var(--ink);font-weight:800}.site-footer{background:var(--ink);color:#F8D6E4;padding:42px 0 calc(24px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:22px}.footer-grid h2{font-size:15px;color:#fff}.footer-grid a{display:block;padding:5px 0;color:#F8D6E4}.footer-brand strong,.footer-brand span{display:block}.footer-logo{height:34px;margin-bottom:12px;filter:brightness(0) invert(1);max-width:180px}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:28px;padding-top:18px;font-size:13px}.overlay{position:fixed;inset:0;background:rgba(74,22,48,.28);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.sugar-drawer,.search-layer{position:fixed;z-index:80;left:50%;transform:translateX(-50%) translateY(-12px);top:78px;width:min(var(--wrap),calc(100% - 32px));background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:0 0 18px 18px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.sugar-drawer.is-open,.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.sugar-drawer{max-height:52vh;overflow:auto}.drawer-head,.search-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-logo{height:28px;max-width:140px}.drawer-head button,.search-head button{border:1px solid var(--border);background:#fff;border-radius:10px;min-height:40px;padding:0 12px;color:var(--dark);font-weight:800}.drawer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:16px 18px 22px}.drawer-groups h2{font-size:14px;color:var(--muted)}.drawer-groups a{display:block;padding:10px;border-radius:12px}.drawer-groups a:hover,.drawer-groups a:focus-visible{background:var(--soft);outline:none}.drawer-groups strong,.drawer-groups span{display:block}.drawer-groups span{font-size:13px;color:var(--muted);line-height:1.5;margin-top:3px}.search-layer{max-width:760px;padding-bottom:18px}.search-layer>p,.fake-search,.preset-links{margin-left:18px;margin-right:18px}.fake-search{border:1px solid var(--border);background:var(--bg);padding:13px 14px;border-radius:12px;color:var(--assist)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.preset-links a{background:var(--pale);color:var(--dark);padding:8px 12px;border-radius:10px;font-weight:700}.mobile-bottom{display:none}.list-clean{list-style:none;padding:0;margin:0}.list-clean li{padding:12px 0;border-bottom:1px solid var(--border)}.tag{display:inline-block;background:var(--pale);color:var(--dark);font-weight:800;font-size:12px;padding:4px 8px;border-radius:8px}.notice{background:var(--soft);border-left:4px solid var(--pink);padding:14px 16px;border-radius:12px}.table-like{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.table-like>div{background:#fff;border:1px solid var(--border);padding:16px;border-radius:14px}
a:focus-visible,button:focus-visible{outline:3px solid rgba(232,90,139,.35);outline-offset:2px}
@media (max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr)}.number-grid,.state-grid,.books,.method-grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.content-layout,.app-showcase{grid-template-columns:1fr}.side-card{position:static}.app-media{height:360px}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand{grid-column:1/-1}.drawer-groups{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){.sign-row{display:none}.site-main{padding-top:78px;padding-bottom:62px}.wrap{width:min(var(--wrap),calc(100% - 32px))}.box-inner{gap:8px}.brand-logo{height:32px;max-width:130px}.brand-text{font-size:18px}.drawer-trigger{padding:6px 12px}.app-link{font-size:14px}.card-grid,.number-grid,.state-grid,.books,.letter-grid,.method-grid,.table-like,.footer-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.hero,.page-hero{padding-top:20px}.card .card-media{height:190px}.section-media{height:210px}.sugar-drawer,.search-layer{top:78px;width:100%;border-radius:0;max-height:68vh}.drawer-groups{grid-template-columns:1fr}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:60;left:0;right:0;bottom:0;min-height:50px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:13px;color:var(--ink)}.mobile-bottom a:active{background:var(--pink);color:#fff}.site-footer{padding-bottom:calc(76px + env(safe-area-inset-bottom))}.app-media{height:340px}.footer-grid{gap:10px}.steps{gap:10px}}