:root{
  --bg:#E8E4DC;--bg-deep:#D6D0C6;--paper:#F6F3ED;--paper-2:#EFEBE3;--ink:#2C2A26;--text:#3A372F;
  --muted:#6B675E;--soft:#8A8478;--rock:#6B675E;--rock-deep:#3E3B36;--rock-light:#C8C2B6;--warm:#F7F3EB;
  --moss:#6A7A58;--clay:#A65A3A;--border:rgba(62,59,54,.16);--border-focus:rgba(166,90,58,.40);
  --shadow:0 12px 28px rgba(44,42,38,.08);--radius:10px;--max:1080px;
}
*{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",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
button{cursor:pointer}
.shell{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.stone-line{position:fixed;z-index:120;top:0;left:0;right:0;height:22px;background:var(--rock-deep);color:var(--warm);font-size:12px}
.stone-line__inner{height:22px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.text-button{border:0;background:transparent;color:var(--warm);padding:0 4px;min-height:22px}
.rock-bar{position:fixed;z-index:119;top:22px;left:0;right:0;height:56px;background:var(--bg-deep);border-bottom:1px solid var(--border)}
.rock-bar__inner{height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand-link{display:flex;align-items:center;min-height:44px;max-width:55%}
.brand-logo,.drawer-logo,.footer-logo{height:26px;width:auto;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:700;color:var(--ink)}
.rock-bar__actions{display:flex;align-items:center;gap:8px;white-space:nowrap}
.primary-action,.secondary-action,.drawer-close,.search-close{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:9px;font-size:14px;line-height:1;border:1px solid transparent;transition:.2s ease}
.primary-action{background:linear-gradient(135deg,#8A8478 0%,#6B675E 55%,#3E3B36 100%);color:var(--warm);box-shadow:var(--shadow)}
.primary-action.compact{min-height:40px;padding:0 14px}
.secondary-action,.drawer-close,.search-close{background:var(--warm);border-color:var(--clay);color:var(--rock-deep)}
.primary-action:hover,.primary-action:focus-visible{transform:translateY(-1px);filter:brightness(1.04)}
.secondary-action:hover,.secondary-action:focus-visible,.drawer-close:hover,.drawer-close:focus-visible,.search-close:hover,.search-close:focus-visible{border-color:var(--rock-deep);background:var(--paper)}
a:focus-visible,button:focus-visible{outline:3px solid var(--border-focus);outline-offset:2px}
.rock-tabs{position:fixed;z-index:118;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-tab{height:30px;min-width:72px;padding:0 14px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--rock-deep)}
.rock-tab:hover,.rock-tab:focus-visible{background:var(--paper-2)}
.rock-tab.is-current{background:var(--rock-deep);color:var(--warm)}
.site-main{padding-top:116px;min-height:60vh;padding-bottom:0}
.page-hero{padding:48px 0 28px}
.page-hero.compact{padding-bottom:12px}
.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--clay);font-weight:700;text-transform:uppercase}
h1,h2,h3,p{margin-top:0}
h1{font-size:24px;line-height:1.3;color:var(--ink);margin-bottom:16px}
h2{font-size:20px;line-height:1.4;color:var(--ink);margin-bottom:14px}
h3{font-size:16px;line-height:1.5;color:var(--ink);margin-bottom:8px}
p{margin-bottom:14px}
.lead{font-size:16px;line-height:1.8;max-width:760px}
.hero-actions,.section-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.section{padding:28px 0}
.section.alt{background:var(--bg-deep)}
.section.paper{background:var(--paper-2)}
.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-title p{margin:0;max-width:560px;color:var(--muted)}
.image-slot{background:var(--warm);border:1px solid var(--border);border-radius:var(--radius);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.landscape{height:190px}.image-slot.medium{height:168px}.image-slot.banner{height:220px}.image-slot.app{height:min(340px,70vw)}.image-slot.small-brand{width:80px;height:56px}
.card{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.muted{color:var(--muted)}
.chip{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:var(--paper-2);border:1px solid var(--border);font-size:12px;color:var(--rock-deep)}
.clay-note{border-left:3px solid var(--clay);padding:14px 16px;background:var(--warm);border-radius:0 8px 8px 0}
.moss-note{border-left:3px solid var(--moss);padding:14px 16px;background:var(--paper);border-radius:0 8px 8px 0}

/* 首页 */
.home-intro{padding:56px 0 34px;background:linear-gradient(180deg,var(--bg-deep),var(--bg))}
.home-intro__inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end}
.home-intro__copy{max-width:760px}
.home-intro__mark{align-self:center}
.home-intro__mark img{height:42px;width:auto;object-fit:contain}
.dual-observe{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.observe-panel{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:14px}
.observe-panel .image-slot{margin-bottom:16px}
.numbered-strip{display:grid;grid-template-columns:72px minmax(0,1fr);border-top:1px solid var(--border);background:var(--paper)}
.numbered-strip:last-child{border-bottom:1px solid var(--border)}
.numbered-strip__mark{padding:18px 14px;font-size:20px;font-weight:800;color:var(--clay);border-right:1px solid var(--border)}
.numbered-strip__body{padding:16px 20px}
.note-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.note-sheet{background:var(--warm);border:1px solid var(--border);border-radius:12px;padding:20px;min-height:210px}
.shelf-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--paper)}
.shelf-cell{padding:20px;border-right:1px solid var(--border);min-height:150px}
.shelf-cell:last-child{border-right:0}
.sequence-row{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.sequence-item{padding:16px;background:var(--paper);border:1px solid var(--border);border-radius:10px}
.sequence-item strong{display:block;color:var(--clay);font-size:18px;margin-bottom:6px}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);align-items:stretch;gap:0}
.timeline-node{min-width:0;position:relative;padding:38px 18px 16px;background:var(--warm);border:1px solid var(--border);border-right:0}
.timeline-node:last-child{border-right:1px solid var(--border);border-radius:0 10px 10px 0}.timeline-node:first-child{border-radius:10px 0 0 10px}
.timeline-node:before{content:"";position:absolute;top:18px;left:18px;width:10px;height:10px;border-radius:50%;background:var(--moss)}
.timeline-node:after{content:"";position:absolute;top:22px;left:32px;right:0;height:1px;background:var(--rock-light)}
.app-feature{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start}
.app-visual{display:grid;grid-template-columns:minmax(0,1fr) 64px;gap:12px;align-items:start}
.app-icon-box{width:64px;height:64px;background:var(--warm);border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;justify-content:center}.app-icon-box img{width:48px;height:48px;object-fit:contain}
.reading-points{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.reading-point{padding:18px;background:var(--paper);border-left:3px solid var(--moss);border-radius:0 10px 10px 0}
.faq-mini{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.faq-mini article{padding:18px;background:var(--warm);border:1px solid var(--border);border-radius:10px}
.brand-story{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}

/* 内页版式 */
.long-strips{border-radius:12px;overflow:hidden;border:1px solid var(--border)}
.long-strip{display:grid;grid-template-columns:86px minmax(0,1fr);background:var(--paper);border-bottom:1px solid var(--border)}.long-strip:last-child{border-bottom:0}
.long-strip__key{padding:22px 16px;font-size:18px;font-weight:800;color:var(--clay);background:var(--paper-2)}.long-strip__content{padding:20px 22px}
.observe-catalog{display:grid;grid-template-columns:240px minmax(0,1fr);gap:26px;align-items:start}
.observe-index{position:sticky;top:136px;background:var(--rock-deep);color:var(--warm);border-radius:12px;padding:20px}.observe-index span{display:block;padding:9px 0;border-bottom:1px solid rgba(247,243,235,.14)}.observe-index span:last-child{border-bottom:0}
.observe-chapter{padding:24px 0;border-bottom:1px solid var(--border)}.observe-chapter:last-child{border-bottom:0}
.card-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.wall-card{padding:20px}.wall-card:nth-child(3n){background:var(--warm)}
.memo-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.memo-stack{display:grid;gap:14px}.memo-card{padding:20px;background:var(--paper);border:1px solid var(--border);border-radius:10px}.memo-card header{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:10px}.memo-card header span{font-size:12px;color:var(--clay)}
.five-sequence{display:grid;grid-template-columns:1fr;gap:12px}.five-sequence article{display:grid;grid-template-columns:72px minmax(0,1fr);gap:18px;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:18px}.five-sequence b{font-size:22px;color:var(--clay)}
.status-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--border);border-radius:12px;overflow:hidden}.status-node{padding:20px;background:var(--paper);border-right:1px solid var(--border)}.status-node:last-child{border-right:0}.status-node .status{display:inline-flex;padding:3px 8px;border-radius:999px;background:var(--bg-deep);font-size:12px;color:var(--rock-deep);margin-bottom:10px}
.checklist{counter-reset:item;display:grid;gap:12px}.check-item{position:relative;padding:18px 18px 18px 58px;background:var(--paper);border:1px solid var(--border);border-radius:10px}.check-item:before{counter-increment:item;content:counter(item,"cjk-ideographic");position:absolute;left:18px;top:18px;width:28px;height:28px;border-radius:8px;background:var(--rock-deep);color:var(--warm);display:flex;align-items:center;justify-content:center;font-size:12px}
.method-steps{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.method-step{padding:22px;background:var(--warm);border-top:4px solid var(--moss);border-radius:8px}
.theme-list{display:grid;gap:12px}.theme-row{display:grid;grid-template-columns:180px minmax(0,1fr);gap:22px;padding:20px;background:var(--paper);border:1px solid var(--border);border-radius:10px}.theme-row h2{margin:0}
.rack{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--border);border-radius:12px;overflow:hidden}.rack article{min-height:190px;padding:20px;background:var(--paper);border-right:1px solid var(--border);border-bottom:1px solid var(--border)}.rack article:nth-child(3n){border-right:0}.rack article:nth-last-child(-n+3){border-bottom:0}
.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.product-panel{padding:22px;background:var(--paper);border:1px solid var(--border);border-radius:12px}.product-panel.wide{grid-column:1/-1}
.terms{display:grid;gap:14px}.term-section{padding:22px;background:var(--paper);border-left:4px solid var(--rock);border-radius:0 10px 10px 0}.term-section h2{margin-bottom:10px}
.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.help-card{padding:20px;background:var(--paper);border:1px solid var(--border);border-radius:10px}
.faq-list{display:grid;gap:14px}.faq-item{padding:20px 22px;background:var(--paper);border:1px solid var(--border);border-radius:10px}.faq-item h2{font-size:17px;margin-bottom:8px}
.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-path{padding:22px;background:var(--paper);border:1px solid var(--border);border-radius:10px}.contact-path small{display:block;color:var(--clay);font-size:12px;margin-bottom:8px}
.about-manifesto{padding:28px;background:var(--rock-deep);color:var(--warm);border-radius:12px}.about-manifesto h2{color:var(--warm)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.about-grid article{padding:20px;background:var(--paper);border:1px solid var(--border);border-radius:10px}

.site-footer{background:#2A2824;color:#E8E4DC;border-top:1px solid var(--rock-light);font-size:13px;margin-top:40px}
.footer-head{padding:34px 0 78px}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:28px}.footer-brand strong,.footer-brand span{display:block}.footer-brand strong{font-size:16px;color:var(--warm)}.footer-brand span{font-size:12px;color:var(--rock-light)}
.footer-columns{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-columns h2{font-size:13px;color:var(--warm);margin-bottom:8px}.footer-columns a{display:block;color:#E8E4DC;padding:4px 0}.footer-columns a:hover{text-decoration:underline}.footer-note{margin-top:28px;padding-top:20px;border-top:1px solid rgba(232,228,220,.16);color:#E8E4DC}.footer-copy{color:var(--rock-light);margin-bottom:0}
.rock-drawer{position:fixed;z-index:160;left:0;top:0;bottom:0;width:380px;max-width:88vw;background:var(--warm);box-shadow:18px 0 40px rgba(44,42,38,.16);transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;overflow-y:auto}.rock-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 16px;background:var(--bg-deep);border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-groups{padding:14px 16px 34px}.drawer-groups section{margin-bottom:18px}.drawer-groups h2{font-size:13px;color:var(--clay);margin-bottom:6px}.drawer-groups a{display:block;padding:11px 0;border-bottom:1px solid var(--border)}.drawer-groups a strong,.drawer-groups a span{display:block}.drawer-groups a span{font-size:12px;color:var(--muted);margin-top:2px}
.search-layer{position:fixed;z-index:155;top:78px;left:0;right:0;visibility:hidden;pointer-events:none;transform:translateY(-14px);opacity:0;transition:.2s ease}.search-layer.is-open{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{width:min(calc(100% - 32px),var(--max));margin:12px auto 0;padding:20px;background:var(--bg-deep);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.preset-links{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.preset-links a{display:inline-flex;min-height:44px;align-items:center;padding:0 14px;background:var(--warm);border:1px solid var(--border);border-radius:9px}.search-card p{margin-bottom:0;color:var(--muted)}
.site-overlay{position:fixed;z-index:150;inset:0;background:rgba(42,40,36,.42);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.site-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}
.mobile-bottom{display:none}

@media (max-width:840px){
  .shelf-grid{grid-template-columns:1fr 1fr}.shelf-cell:nth-child(2){border-right:0}.shelf-cell{border-bottom:1px solid var(--border)}.shelf-cell:nth-last-child(-n+2){border-bottom:0}
  .sequence-row{grid-template-columns:1fr 1fr}.sequence-item:last-child{grid-column:1/-1}
  .app-feature,.brand-story,.product-grid,.about-grid{grid-template-columns:1fr}
  .observe-catalog{grid-template-columns:1fr}.observe-index{position:static;display:flex;flex-wrap:wrap;gap:10px}.observe-index span{white-space:nowrap;border-bottom:0;border-right:1px solid rgba(247,243,235,.14);padding:8px 12px 8px 0}
  .timeline{grid-template-columns:1fr 1fr}.timeline-node:nth-child(2){border-right:1px solid var(--border)}.timeline-node:nth-child(n){border-radius:0}
  .status-track{grid-template-columns:1fr 1fr}.status-node{border-bottom:1px solid var(--border)}.status-node:nth-child(2){border-right:0}.status-node:nth-last-child(-n+2){border-bottom:0}
  .rack{grid-template-columns:1fr 1fr}.rack article:nth-child(3n){border-right:1px solid var(--border)}.rack article:nth-child(2n){border-right:0}.rack article:nth-last-child(-n+3){border-bottom:1px solid var(--border)}.rack article:nth-last-child(-n+2){border-bottom:0}
  .footer-columns{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .shell{width:calc(100% - 32px)}
  .rock-tabs{display:none}.site-main{padding-top:78px;padding-bottom:56px}
  .stone-line__inner{white-space:nowrap}.stone-line__inner>span{overflow:hidden;text-overflow:ellipsis}
  .brand-link{max-width:48%}.rock-bar__actions{gap:6px}.secondary-action,.primary-action.compact{padding:0 11px;min-width:58px}
  .page-hero{padding:34px 0 18px}.home-intro{padding:40px 0 26px}.home-intro__inner{grid-template-columns:1fr}.home-intro__mark{display:none}
  .dual-observe,.note-columns,.reading-points,.faq-mini,.memo-columns,.card-wall,.method-steps,.help-grid,.contact-paths{grid-template-columns:1fr}
  .shelf-grid{grid-template-columns:1fr}.shelf-cell{border-right:0!important;border-bottom:1px solid var(--border)!important}.shelf-cell:last-child{border-bottom:0!important}
  .sequence-row{grid-template-columns:1fr}.sequence-item:last-child{grid-column:auto}
  .app-visual{grid-template-columns:1fr}.app-icon-box{width:64px}
  .numbered-strip{grid-template-columns:54px minmax(0,1fr)}.numbered-strip__mark{padding:16px 10px}.numbered-strip__body{padding:14px}
  .long-strip{grid-template-columns:58px minmax(0,1fr)}.long-strip__key{padding:18px 10px}.long-strip__content{padding:18px 14px}
  .five-sequence article{grid-template-columns:48px minmax(0,1fr);padding:16px;gap:12px}
  .timeline{grid-template-columns:1fr}.timeline-node{border-right:1px solid var(--border);border-bottom:0}
  .status-track{grid-template-columns:1fr}.status-node{border-right:0;border-bottom:1px solid var(--border)!important}.status-node:last-child{border-bottom:0!important}
  .theme-row{grid-template-columns:1fr;gap:8px}
  .rack{grid-template-columns:1fr}.rack article{border-right:0!important;border-bottom:1px solid var(--border)!important}.rack article:last-child{border-bottom:0!important}
  .footer-columns{grid-template-columns:1fr 1fr;gap:18px 14px}.footer-head{padding-bottom:88px}
  .mobile-bottom{position:fixed;z-index:117;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;min-height:48px;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.is-current{background:var(--clay);color:var(--warm)}
  .search-layer{top:0;bottom:0;background:var(--rock-deep);padding:18px 0;overflow-y:auto}.search-card{margin:0 auto;background:var(--rock-deep);border-color:rgba(247,243,235,.18);color:var(--warm);box-shadow:none}.search-card h2,.search-card p{color:var(--warm)}.search-card .eyebrow{color:#E7B49E}.preset-links a{background:var(--warm);color:var(--rock-deep)}
  .section-title{display:block}.section-title p{margin-top:4px}
  .image-slot.banner{height:180px}.image-slot.landscape{height:170px}.image-slot.medium{height:156px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}