:root{--bg:#E8E4DC;--deep:#D6D0C6;--paper:#F6F3ED;--paper2:#EFEBE3;--title:#2C2A26;--text:#3A372F;--muted:#6B675E;--soft:#8A8478;--rock:#6B675E;--dark:#3E3B36;--light:#C8C2B6;--warm:#F7F3EB;--moss:#6A7A58;--clay:#A65A3A;--border:rgba(62,59,54,.16);--accent:rgba(166,90,58,.40);--shadow:0 12px 28px rgba(44,42,38,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}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.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,a{touch-action:manipulation}button{font:inherit}.stone-line{position:fixed;top:0;left:0;right:0;height:22px;background:var(--dark);color:var(--warm);z-index:70;font-size:12px}.top-inner,.bar-inner{max-width:1080px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 20px}.text-action{border:0;background:transparent;color:var(--warm);min-height:22px;padding:0 8px;cursor:pointer}.rock-bar{position:fixed;top:22px;left:0;right:0;height:56px;background:var(--deep);border-bottom:1px solid var(--border);z-index:69}.brand-link{display:flex;align-items:center;min-height:44px}.brand-logo,.footer-logo{height:26px;max-width:170px;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;font-weight:700}.bar-actions{display:flex;gap:8px;align-items:center}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 16px;border-radius:9px;font-size:14px;white-space:nowrap;border:1px solid transparent;cursor:pointer;transition:.18s ease}.primary-button{background:linear-gradient(135deg,#8A8478 0%,#6B675E 55%,#3E3B36 100%);color:var(--warm)}.secondary-button{background:var(--warm);border-color:var(--clay);color:var(--dark)}.compact{height:40px}.primary-button:hover,.secondary-button:hover{transform:translateY(-1px);box-shadow:var(--shadow)}a:focus-visible,button:focus-visible{outline:3px solid var(--clay);outline-offset:3px}.rock-tabs{position:fixed;top:78px;left:0;right:0;height:38px;background:var(--warm);border-bottom:1px solid var(--border);z-index:68;display:flex;align-items:center;justify-content:center;gap:6px}.rock-tabs a{display:flex;align-items:center;justify-content:center;min-height:30px;padding:0 16px;border-radius:7px;font-size:13px}.rock-tabs a.active{background:var(--dark);color:var(--warm)}.site-main{max-width:1080px;margin:0 auto;padding:152px 20px 72px}.section{margin:0 0 44px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:700}.section h1,.section h2,.section h3{color:var(--title);margin-top:0}.section h1{font-size:24px;line-height:1.3;margin-bottom:14px}.section h2{font-size:20px;line-height:1.4;margin-bottom:10px}.section h3{font-size:16px;line-height:1.45;margin-bottom:8px}.lead{max-width:820px;font-size:16px}.intro-panel,.paper-panel,.note-card,.term-block,.method-block,.faq-item{background:var(--paper);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}.intro-panel{padding:34px}.intro-panel .primary-button{margin-top:8px}.media-slot{background:var(--paper2);border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.slot-168{height:168px}.slot-190{height:190px}.slot-220{height:220px}.slot-340{height:340px}.two-feature{display:grid;grid-template-columns:1fr 1fr;gap:18px}.feature-block{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px}.feature-block .media-slot{margin-bottom:14px}.number-strips{display:grid;gap:10px}.number-strip{display:grid;grid-template-columns:56px 1fr;gap:18px;align-items:start;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:16px}.number-strip .mark{width:40px;height:40px;border-radius:10px;background:var(--dark);color:var(--warm);display:flex;align-items:center;justify-content:center;font-weight:700}.number-strip p{margin:2px 0 0}.two-notes{display:grid;grid-template-columns:1fr 1fr;gap:18px}.note-card{padding:20px}.shelf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.shelf{min-height:150px;background:var(--paper);border:1px solid var(--border);border-top:4px solid var(--moss);border-radius:10px;padding:16px}.letter-list{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.letter-item{background:var(--deep);border:1px solid var(--border);border-radius:10px;padding:16px}.letter-item b{display:block;font-size:18px;color:var(--clay);margin-bottom:6px}.timeline{display:flex;gap:12px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}.timeline-node{min-width:190px;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:16px}.status{display:inline-flex;padding:3px 8px;border-radius:999px;background:var(--deep);color:var(--dark);font-size:12px;font-weight:700}.app-stack{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:24px}.app-icons{display:flex;align-items:center;gap:12px;margin:12px 0}.app-icon{width:48px;height:48px;object-fit:contain}.bullet-columns{columns:2;column-gap:28px}.bullet-columns p{break-inside:avoid;margin-top:0}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-item{padding:18px}.page-hero{margin-bottom:28px}.page-hero .media-slot{margin-top:18px}.observe-index{display:grid;grid-template-columns:160px 1fr;gap:14px}.observe-index .side-index{background:var(--dark);color:var(--warm);border-radius:12px;padding:18px;height:max-content}.observe-index .side-index a{display:block;padding:10px 0;border-bottom:1px solid rgba(247,243,235,.18)}.observe-sections{display:grid;gap:14px}.observe-sections article{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:20px}.card-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.wall-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px;min-height:210px}.memo-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.memo-column{display:grid;gap:14px}.memo-column .note-card:nth-child(even){background:var(--paper2)}.check-list{display:grid;gap:10px}.check-row{background:var(--paper);border-left:4px solid var(--clay);border-radius:8px;padding:15px 17px}.method-flow{display:grid;gap:14px}.method-block{padding:22px}.theme-list{display:grid;gap:12px}.theme-row{display:grid;grid-template-columns:170px 1fr;gap:18px;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:18px}.shelf-page{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.shelf-page section{background:var(--paper);border:1px solid var(--border);border-bottom:5px solid var(--light);border-radius:10px;padding:18px;min-height:230px}.product-layout{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:start}.product-copy{display:grid;gap:14px}.product-copy .paper-panel{padding:20px}.terms{display:grid;gap:14px}.term-block{padding:22px}.contact-options{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-options .paper-panel{padding:20px}.faq-full{display:grid;gap:12px}.faq-full .faq-item h2{font-size:16px}.site-footer{background:#2A2824;color:#E8E4DC;border-top:1px solid rgba(200,194,182,.2);font-size:13px}.footer-inner{max-width:1080px;margin:0 auto;padding:34px 20px 74px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-brand div{display:flex;flex-direction:column}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-grid h3{font-size:13px;color:#F7F3EB;margin:0 0 8px}.footer-grid a{display:block;color:#E8E4DC;padding:4px 0}.footer-note{margin-top:24px;padding-top:18px;border-top:1px solid rgba(200,194,182,.18);color:#C8C2B6}.copyright{color:#C8C2B6}.overlay{position:fixed;inset:0;background:rgba(42,40,36,.45);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.open{opacity:1;visibility:visible}.drawer{position:fixed;top:0;left:0;bottom:0;width:380px;max-width:88vw;background:var(--warm);z-index:100;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:.24s ease;overflow-y:auto;padding:18px}.drawer.open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px}.icon-button{min-height:44px;padding:0 12px;border-radius:8px;border:1px solid var(--border);background:var(--paper);color:var(--dark);cursor:pointer}.drawer-group{padding:16px 0;border-bottom:1px solid var(--border)}.drawer-group h3{font-size:13px;margin:0 0 8px;color:var(--clay)}.drawer-group a{display:block;padding:10px 8px;border-radius:8px}.drawer-group a:hover{background:var(--paper)}.drawer-group b{display:block;font-size:14px}.drawer-group span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.search-layer{position:fixed;top:78px;left:0;right:0;z-index:95;visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.search-layer.open{visibility:visible;opacity:1;pointer-events:auto}.search-card{max-width:900px;margin:12px auto;background:var(--paper);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:20px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-presets{display:flex;flex-wrap:wrap;gap:10px}.search-presets a{min-height:44px;padding:10px 16px;border:1px solid var(--accent);border-radius:8px;background:var(--warm);display:flex;align-items:center}.mobile-bottom{display:none}.muted{color:var(--muted)}.rule{height:1px;background:var(--border);margin:20px 0}.clay-box{background:var(--clay);color:var(--warm);border-radius:12px;padding:20px}.clay-box h2,.clay-box h3{color:var(--warm)}.dark-box{background:var(--dark);color:var(--warm);border-radius:12px;padding:20px}.dark-box h2,.dark-box h3{color:var(--warm)}@media(max-width:800px){.top-inner,.bar-inner{padding:0 16px}.rock-tabs{display:none}.site-main{padding:112px 16px 82px}.two-feature,.two-notes,.memo-grid,.card-wall,.faq-mini,.contact-options,.product-layout{grid-template-columns:1fr}.shelf-grid,.shelf-page{grid-template-columns:1fr 1fr}.letter-list{grid-template-columns:1fr}.observe-index{grid-template-columns:1fr}.observe-index .side-index{display:grid;grid-template-columns:repeat(2,1fr)}.theme-row{grid-template-columns:1fr}.bullet-columns{columns:1}.footer-grid{grid-template-columns:1fr 1fr}.mobile-bottom{position:fixed;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);z-index:65;display:grid;grid-template-columns:repeat(5,1fr)}.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)}.search-layer{top:0;bottom:0;background:var(--dark);padding:16px}.search-card{height:100%;margin:0;background:var(--dark);color:var(--warm);border-color:rgba(247,243,235,.2)}.search-card strong,.search-card p{color:var(--warm)}.search-presets a{background:#4d4943;color:var(--warm);border-color:rgba(247,243,235,.3)}.search-card .icon-button{background:var(--warm);color:var(--dark)}.slot-340{height:300px}.intro-panel{padding:24px}}@media(max-width:520px){.stone-line .top-inner span{max-width:72%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bar-actions{gap:6px}.bar-actions .compact{padding:0 12px}.shelf-grid,.shelf-page,.footer-grid{grid-template-columns:1fr}.number-strip{grid-template-columns:44px 1fr;gap:12px}.section{margin-bottom:36px}.section-head{align-items:start;flex-direction:column}.product-layout{gap:16px}}

.padded-panel{padding:24px}