:root{
  --bg:#E8E4DC; --deep:#D6D0C6; --paper:#F6F3ED; --soft:#EFEBE3; --title:#2C2A26; --text:#3A372F; --muted:#6B675E; --assist:#8A8478; --rock:#6B675E; --dark:#3E3B36; --light:#C8C2B6; --warm:#F7F3EB; --moss:#6A7A58; --clay:#A65A3A; --border:rgba(62,59,54,.16); --accent-border:rgba(166,90,58,.40); --shadow:0 12px 28px rgba(44,42,38,.08);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}img{max-width:100%;display:block}.site-width{width:min(1080px,calc(100% - 32px));margin-inline:auto}.stone-line{position:fixed;z-index:80;top:0;left:0;right:0;height:22px;background:var(--dark);color:var(--warm);font-size:12px}.stone-line-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-action{border:0;background:transparent;color:var(--warm);height:22px;padding:0 4px;cursor:pointer}.rock-bar{position:fixed;z-index:79;top:22px;left:0;right:0;height:56px;background:var(--bg);border-bottom:1px solid var(--border)}.rock-bar-inner{height:56px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand-link{display:flex;align-items:center;min-height:44px}.brand-logo,.footer-logo,.drawer-brand img{height:26px;width:auto;object-fit:contain}.brand-fallback{font-size:16px;font-weight:800;color:var(--title)}.rock-actions{display:flex;gap:8px;align-items:center}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 16px;border-radius:10px;font-size:14px;white-space:nowrap;transition:.2s ease;cursor:pointer}.primary-button{background:linear-gradient(135deg,#8A8478 0%,#6B675E 55%,#3E3B36 100%);color:var(--warm);border:1px solid transparent}.secondary-button{background:var(--warm);color:var(--dark);border:1px solid var(--clay)}.primary-button:hover,.secondary-button:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.primary-button:focus-visible,.secondary-button:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(166,90,58,.25);outline-offset:2px}.compact-button{min-width:96px}.rock-tabs{position:fixed;z-index:78;top:78px;left:0;right:0;height:38px;background:var(--warm);border-bottom:1px solid var(--border)}.rock-tabs-inner{height:38px;display:flex;align-items:center;justify-content:center;gap:8px}.rock-tabs a{height:30px;min-width:72px;padding:0 14px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--dark)}.rock-tabs a.active{background:var(--dark);color:var(--warm)}.site-main{padding-top:116px;min-height:70vh}.page-shell{padding:34px 0 68px}.page-hero{padding:28px 0 18px}.eyebrow{font-size:13px;color:var(--clay);font-weight:800;letter-spacing:.08em;margin-bottom:8px}.page-hero h1,.stone-intro h1{font-size:24px;line-height:1.3;margin:0;color:var(--title)}h2{font-size:20px;line-height:1.35;margin:0 0 12px;color:var(--title)}h3{font-size:16px;line-height:1.45;margin:0 0 8px;color:var(--title)}p{margin:0 0 14px}.lede{max-width:760px;margin-top:14px;color:var(--muted)}.image-slot{background:var(--soft);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.image-slot.empty::after{content:"";width:52px;height:7px;border-radius:99px;background:rgba(62,59,54,.12)}.image-slot.banner{height:220px}.image-slot.medium{height:190px}.image-slot.small{height:168px}.image-slot.app-shot{height:320px;max-width:560px;margin:18px auto 0}.section-block{padding:28px 0}.section-muted{background:var(--soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.surface{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px;box-shadow:var(--shadow)}.surface.deep{background:var(--dark);color:var(--warm)}.surface.deep h2,.surface.deep h3{color:var(--warm)}.tag{display:inline-flex;align-items:center;min-height:28px;padding:3px 9px;border-radius:999px;background:rgba(106,122,88,.12);color:var(--moss);font-size:12px;font-weight:700}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.stone-intro{padding:40px 0 34px}.stone-intro .intro-wrap{max-width:820px}.stone-intro .brand-mini{height:26px;width:auto;object-fit:contain;margin-bottom:18px}.stone-intro .slogan{font-size:18px;font-weight:800;color:var(--clay);margin:10px 0 12px}.two-observe{display:grid;grid-template-columns:1fr 1fr;gap:18px}.observe-panel{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:16px}.observe-panel .image-slot{margin-bottom:14px}.number-strips{display:grid;gap:10px}.number-strip{display:grid;grid-template-columns:64px 1fr;gap:16px;align-items:start;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:14px}.number-strip .mark{width:44px;height:44px;border-radius:10px;background:var(--dark);color:var(--warm);display:flex;align-items:center;justify-content:center;font-weight:800}.note-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.note-column{border-left:4px solid var(--clay);background:var(--warm);padding:18px;border-radius:0 10px 10px 0}.shelf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.shelf-cell{min-height:150px;padding:16px;border:1px solid var(--border);border-radius:10px;background:var(--paper);position:relative}.shelf-cell::after{content:"";position:absolute;left:12px;right:12px;bottom:10px;height:2px;background:var(--light)}.letter-list{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.letter-item{background:var(--deep);padding:16px;border-radius:10px}.letter-item strong{font-size:22px;color:var(--clay);display:block;margin-bottom:6px}.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.time-node{min-width:0;border-top:4px solid var(--moss);background:var(--paper);padding:14px;border-radius:8px;box-shadow:var(--shadow)}.status{display:inline-flex;padding:3px 8px;border-radius:999px;font-size:12px;background:rgba(106,122,88,.13);color:var(--moss);margin-bottom:8px}.method-list,.memo-list,.theme-list,.terms-list{display:grid;gap:12px}.method-item,.memo-item,.theme-item,.term-item{padding:18px;background:var(--paper);border:1px solid var(--border);border-radius:10px}.method-item:nth-child(even),.memo-item:nth-child(even){background:var(--warm)}.card-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card-wall article{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px;min-height:200px}.catalog-list{display:grid;gap:10px}.catalog-row{display:grid;grid-template-columns:84px 1fr;gap:14px;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:16px}.catalog-row .label{font-weight:800;color:var(--clay)}.app-feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.app-feature{background:var(--paper);padding:18px;border:1px solid var(--border);border-radius:12px}.app-icon{height:48px;width:48px;object-fit:contain;margin-bottom:12px}.faq-list{display:grid;gap:12px}.faq-item{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:18px}.faq-item h2{font-size:16px}.about-band{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}.about-band .surface{height:100%}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px}.small-note{font-size:13px;color:var(--muted)}.site-footer{background:#2A2824;color:#E8E4DC;border-top:1px solid rgba(200,194,182,.22);padding:30px 0 calc(26px + env(safe-area-inset-bottom));font-size:13px}.footer-brand{display:flex;gap:12px;align-items:center;border-bottom:1px solid rgba(200,194,182,.16);padding-bottom:18px}.footer-brand div{display:flex;flex-direction:column}.footer-brand span{color:#C8C2B6;font-size:12px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:22px 0}.footer-grid h2{font-size:13px;color:#F7F3EB;margin-bottom:8px}.footer-grid a{display:block;color:#E8E4DC;padding:3px 0}.footer-note{border-top:1px solid rgba(200,194,182,.16);padding-top:16px;color:#C8C2B6}.footer-note p:last-child{margin-bottom:0}.site-mask{position:fixed;z-index:120;inset:0;background:rgba(42,40,36,.42);opacity:0;pointer-events:none;transition:.2s}.site-mask.show{opacity:1;pointer-events:auto}.rock-drawer{position:fixed;z-index:130;top:0;bottom:0;left:0;width:min(380px,88vw);background:var(--warm);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:.24s ease;box-shadow:18px 0 40px rgba(44,42,38,.18);overflow-y:auto}.rock-drawer.open{transform:none;visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:var(--warm);display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border);z-index:1}.drawer-brand{display:flex;align-items:center;gap:10px}.icon-button{min-width:44px;min-height:44px;border-radius:9px;border:1px solid var(--border);background:var(--paper);color:var(--dark);cursor:pointer}.drawer-groups{padding:10px 16px 24px}.drawer-groups section{padding:10px 0;border-bottom:1px solid var(--border)}.drawer-groups h2{font-size:13px;color:var(--clay);margin-bottom:6px}.drawer-groups a{display:block;padding:9px 8px;border-radius:8px}.drawer-groups a:hover{background:var(--soft)}.drawer-groups strong{display:block;font-size:15px}.drawer-groups span{display:block;color:var(--muted);font-size:12px}.site-search{position:fixed;z-index:125;top:78px;left:0;right:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);opacity:0;transition:.2s}.site-search.open{visibility:visible;pointer-events:auto;transform:none;opacity:1}.search-card{background:var(--bg);border:1px solid var(--border);border-radius:0 0 12px 12px;padding:16px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{display:flex;align-items:center;min-height:44px;padding:0 14px;background:var(--paper);border:1px solid var(--border);border-radius:9px}.mobile-bottom{display:none}
@media(max-width:820px){.timeline{grid-template-columns:repeat(2,minmax(0,1fr))}.rock-tabs{display:none}.site-main{padding-top:78px;padding-bottom:58px}.stone-intro{padding-top:32px}.two-observe,.note-columns,.about-band,.app-feature-grid,.contact-grid{grid-template-columns:1fr}.shelf-grid{grid-template-columns:repeat(2,1fr)}.letter-list{grid-template-columns:1fr 1fr}.letter-item:last-child{grid-column:1/-1}.card-wall{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.site-search{top:0;bottom:0;background:var(--dark);color:var(--warm);display:flex;align-items:flex-start;padding-top:80px}.search-card{width:min(680px,calc(100% - 24px));background:var(--dark);border-color:rgba(247,243,235,.22);border-radius:12px}.search-head strong{color:var(--warm)}.search-presets a{background:#4A4741;color:var(--warm);border-color:rgba(247,243,235,.18)}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);z-index:75;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--warm);border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:12px}.mobile-bottom a.active{background:var(--clay);color:var(--warm)}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}}
@media(max-width:600px){.timeline{grid-template-columns:1fr}.site-width{width:calc(100% - 32px)}.stone-line-inner span{max-width:78%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rock-actions{gap:6px}.secondary-button,.compact-button{padding-inline:12px;min-width:74px}.shelf-grid,.card-wall,.letter-list{grid-template-columns:1fr}.letter-item:last-child{grid-column:auto}.number-strip{grid-template-columns:52px 1fr}.catalog-row{grid-template-columns:1fr}.image-slot.banner{height:190px}.image-slot.medium{height:176px}.image-slot.small{height:160px}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.page-shell{padding-top:26px}.site-search{padding-top:72px}}