/* Self-contained product handbook */
.guide-hero{padding:60px 0 48px;gap:60px}.guide-hero h1{font-size:46px;letter-spacing:-1.8px}.guide-hero .hero-description{font-size:16px}.guide-hero .hero-note{font-size:12px;line-height:1.8}.handbook-art{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:30px;position:relative}.handbook-art h2{font-size:27px;line-height:1.5;margin:24px 0}.handbook-art>a{display:flex;align-items:center;gap:16px;padding:17px 0;border-top:1px solid color-mix(in srgb,var(--accent) 15%,transparent)}.handbook-art>a>b{font-size:23px;font-family:var(--serif);color:var(--accent);font-weight:400}.handbook-art>a>span{font-size:14px;font-weight:600;line-height:1.6}.handbook-art a small{display:block;color:var(--muted);font-size:11px;font-weight:400;margin-top:3px}.handbook-art a .icon{margin-left:auto;width:16px}.product-intro{display:grid;grid-template-columns:.65fr 1.35fr;gap:48px;padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);align-items:center}.product-intro h2{font-size:25px}.product-intro>p{font-size:16px;line-height:2;color:var(--muted);margin:0}.mode-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.mode-cards article{border-top:2px solid var(--accent);padding:22px 0 0}.mode-number{font-family:var(--serif);font-size:27px;color:var(--accent)}.mode-cards h3{font-size:20px;margin:12px 0}.mode-cards p{font-size:14px;color:var(--muted);line-height:1.95;margin:0}.home-interface{display:grid;grid-template-columns:1.06fr 1fr;gap:40px;align-items:start}.interface-map{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.map-bar{padding:16px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px}.map-bar>span{font-size:13px;font-weight:650;display:flex;gap:9px;align-items:center}.map-bar small{font-size:10px;white-space:nowrap;color:var(--muted)}.map-zones{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:22px}.map-zone{border:1px solid var(--line);border-radius:8px;background:var(--bg);padding:17px;display:flex;align-items:start;gap:12px;transition:background .2s}.map-zone:hover{background:var(--soft)}.map-zone>b{font-family:var(--serif);font-weight:400;font-size:22px;color:var(--accent);line-height:1.2}.map-zone>span{font-size:14px;line-height:1.6;font-weight:600}.map-zone small{display:block;font-size:11px;line-height:1.6;font-weight:400;color:var(--muted);margin-top:7px}.map-zone .icon{margin-left:auto;min-width:12px;width:12px;margin-top:4px}.map-caption{padding:0 22px 18px;font-size:11px;color:var(--muted)}.map-preview .map-zones{grid-template-columns:1fr 1fr;gap:10px;padding:17px}.map-preview .map-zone{padding:15px 12px;gap:10px}.map-preview .map-zone>span{font-size:12px}.map-preview .map-zone small{font-size:10px}.map-preview .map-zone .icon{display:none}.home-explainer{padding:5px 0}.home-explainer>h3{font-size:25px;margin-bottom:13px}.home-explainer>p{font-size:14px;color:var(--muted);line-height:1.9}.quick-area{border-top:1px solid color-mix(in srgb,var(--accent) 16%,transparent);padding:15px 0}.quick-area strong{font-size:14px}.quick-area p{font-size:13px;color:var(--muted);line-height:1.9;margin:5px 0 0}.function-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.function-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:25px;display:flex;flex-direction:column}.function-no{font-family:var(--serif);font-size:24px;color:var(--accent)}.function-card h3{font-size:19px;line-height:1.5;margin:13px 0}.function-card p{font-size:14px;color:var(--muted);line-height:1.9}.function-card .text-link{margin-top:auto;font-size:12px;padding-top:7px}.screen-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}.screen-tabs>a{display:flex;gap:12px;align-items:center;padding:11px 17px;border:1px solid var(--line);border-radius:7px;font-size:13px;background:var(--paper)}.screen-tabs .icon{width:14px}.screen-section{margin-bottom:58px;scroll-margin-top:110px}.screen-heading{display:flex;align-items:start;gap:19px;margin:30px 0 24px}.chapter-no{font-family:var(--serif);font-size:35px;line-height:1.2;color:var(--accent);flex:none;font-weight:400;letter-spacing:-1px}.screen-heading h2{font-size:28px;margin:0 0 12px}.screen-heading p{font-size:15px;color:var(--muted);line-height:1.9;margin:0;max-width:900px}.area-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px}.area-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:25px 28px;scroll-margin-top:110px}.area-heading{display:flex;align-items:center;gap:13px;margin-bottom:13px}.area-heading>b{font-family:var(--serif);color:var(--accent);font-size:24px;font-weight:400}.area-heading h3{font-size:21px;line-height:1.4;letter-spacing:-.02em}.location{font-size:12px;color:var(--accent);padding:8px 11px;border-radius:4px;background:var(--soft);margin-bottom:18px;line-height:1.8}.area-card>p{font-size:15px;line-height:1.95}.how-line,.tip-line{margin-top:16px}.how-line strong,.tip-line strong{font-size:12px;color:var(--accent)}.how-line p,.tip-line p{font-size:14px;color:var(--muted);line-height:1.95;margin:4px 0 0}.article-source{font-size:11px;color:var(--muted);padding-top:18px;margin-top:18px;border-top:1px solid var(--line);line-height:1.8}.article-source a{font-size:11px;overflow-wrap:anywhere}.article-source .icon{width:11px;height:11px;margin-left:3px}.official-shots{background:var(--paper);border:1px solid var(--line);border-radius:8px;margin-top:20px;padding:0 22px}.official-shots>summary{font-size:14px;cursor:pointer;padding:16px 0;font-weight:600;color:var(--accent)}.shot-intro{font-size:12px;color:var(--muted)}.official-shots figure{margin:0 0 25px}.official-image{display:block;width:100%;max-height:850px;object-fit:contain;object-position:center;background:var(--bg);border:1px solid var(--line)}.official-shots figcaption{font-size:11px;color:var(--muted);line-height:1.9;margin-top:10px}.official-shots .source-link{font-size:11px}.image-fallback{font-size:13px;color:var(--muted);padding:25px;background:var(--bg);border:1px solid var(--line)}.guide-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:35px;align-items:start;padding-bottom:60px}.guide-toc{position:sticky;top:110px;max-height:calc(100vh - 140px);overflow-y:auto;padding:23px 20px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}.guide-toc h2{font-size:17px;margin-bottom:16px}.guide-search{display:block;position:relative}.guide-search .icon{position:absolute;left:10px;top:13px;width:15px;height:15px;color:var(--muted)}.guide-search input{border:1px solid var(--line);background:var(--bg);border-radius:6px;width:100%;padding:11px 8px 11px 31px;font-size:11px;color:var(--ink);min-height:40px}.search-count{font-size:11px;color:var(--muted);margin:11px 0}.guide-toc nav>a{display:flex;gap:11px;line-height:1.7;font-size:12px;padding:11px 0;border-top:1px solid var(--line)}.guide-toc nav>a>span{font-size:10px;font-family:monospace;color:var(--accent);margin-top:2px}.feature-article{padding:31px 34px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);margin-bottom:23px;scroll-margin-top:110px}.feature-article-heading{display:flex;gap:18px;align-items:start;margin-bottom:22px}.feature-article-heading h2{font-size:27px;line-height:1.45;margin:0 0 9px}.feature-article-heading p{font-size:14px;color:var(--muted);margin:0;line-height:1.8}.feature-location{display:flex;gap:12px;align-items:start;padding:15px 17px;background:var(--soft);border-radius:5px;font-size:13px;line-height:1.8;margin-bottom:24px}.feature-location .icon{margin-top:3px;color:var(--accent);width:16px}.feature-article>p{font-size:16px;line-height:2;margin:0 0 16px}.feature-article>h3{font-size:17px;margin:26px 0 17px}.operation-list{list-style:none;padding:0;margin:0 0 24px}.operation-list li{display:flex;gap:13px;margin:13px 0;align-items:start;line-height:1.9;font-size:14px}.operation-list li>b{height:25px;width:25px;flex:none;text-align:center;background:var(--soft);color:var(--accent);border-radius:50%;font-size:11px;margin-top:1px;line-height:25px;font-weight:500}.scenario-note,.boundary-note{font-size:14px;line-height:1.9;padding:15px 18px;background:var(--bg);border-left:2px solid var(--accent);margin-top:15px}.scenario-note strong,.boundary-note strong{font-size:12px;color:var(--accent)}.scenario-note p,.boundary-note p{margin:5px 0 0;color:var(--muted)}.boundary-note{background:transparent;border-left-color:var(--line)}.boundary-note strong{color:var(--muted)}.feature-empty{padding:45px;background:var(--paper);border:1px dashed var(--line);border-radius:var(--radius)}.feature-empty h2{font-size:23px;margin-bottom:15px}.feature-empty p{font-size:14px;color:var(--muted)}.flow-section{display:grid;grid-template-columns:.65fr 1.35fr;gap:45px;border-top:1px solid var(--line);padding:32px 0 44px}.flow-title h2{font-size:26px;line-height:1.5;margin-bottom:16px}.flow-title>p{font-size:14px;color:var(--muted);line-height:1.95}.flow-steps{list-style:none;padding:0;margin:0}.flow-steps li{display:flex;gap:18px;margin:0 0 23px}.flow-steps li>span{font-family:var(--serif);color:var(--accent);font-size:29px;line-height:1.3;flex:none}.flow-steps h3{font-size:18px;margin-bottom:9px}.flow-steps p{font-size:15px;line-height:1.95;color:var(--muted);margin:0}.notes-panel>p{font-size:14px;line-height:1.95;color:var(--muted)}.glossary-section{margin-top:38px}.glossary-section>h2{font-size:27px}.faq-answer{font-size:15px}.glossary-item p{font-size:14px;line-height:1.9}.join-layout{display:grid;grid-template-columns:1fr 420px;gap:65px;align-items:start;padding:5px 0 55px}.join-copy{padding-top:12px}.join-copy .welcome-note{font-size:17px;line-height:2}.join-instructions{border-top:1px solid var(--line);padding-top:28px;margin-top:30px}.join-instructions h2{font-size:23px;margin-bottom:15px}.join-instructions p{font-size:14px;line-height:1.95;color:var(--muted)}.join-instructions .qr-date{background:var(--soft);color:var(--accent);padding:12px 16px;border-radius:5px;font-size:12px;margin:20px 0}.join-instructions .text-link{display:flex;margin-top:18px}.qr-panel{padding:0;margin:0;background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.qr-panel img{display:block;width:100%;height:auto}.qr-panel figcaption{padding:13px 15px;border-top:1px solid var(--line);font-size:11px;color:var(--muted);text-align:center}.qr-expired{padding:20px;border:1px solid var(--line);background:var(--soft);border-radius:8px;font-size:15px;margin-top:20px}.qr-expired p{margin-top:12px;margin-bottom:0}.event-status{border:1px solid #ffffff50;border-radius:50px;padding:9px 19px;font-size:13px;white-space:nowrap}.footer-external{font-size:11px}.footer-external .icon{width:12px;height:12px}.resource-card p{font-size:14px}.page-heading{max-width:860px}.page-heading h1{font-size:38px}.page-heading>p{font-size:15px}.header-entry .icon{width:13px;height:13px}
@media(max-width:1050px){.guide-hero{gap:35px}.guide-hero h1{font-size:39px}.handbook-art{padding:25px}.handbook-art h2{font-size:24px}.handbook-art>a>span{font-size:13px}.handbook-art .art-top{font-size:9px;letter-spacing:1px}.join-layout{grid-template-columns:1fr 360px;gap:35px}.guide-layout{grid-template-columns:240px minmax(0,1fr);gap:24px}.feature-article{padding:28px}.feature-article-heading h2{font-size:24px}.map-zone{padding:15px;gap:9px}.map-zone>span{font-size:13px}.home-interface{gap:25px}.product-intro{gap:30px}.product-intro h2{font-size:22px}}
@media(max-width:800px){.guide-hero{grid-template-columns:1fr;gap:30px;padding:40px 0}.guide-hero h1{font-size:43px}.handbook-art{max-width:600px}.product-intro{grid-template-columns:1fr;gap:15px}.mode-cards{gap:18px}.mode-cards h3{font-size:18px}.mode-cards p{font-size:13px}.home-interface{grid-template-columns:1fr;gap:25px}.map-zones{grid-template-columns:1fr 1fr}.map-preview .map-zone>span{font-size:14px}.map-preview .map-zone small{font-size:12px}.function-grid{grid-template-columns:1fr 1fr}.guide-layout{grid-template-columns:1fr}.guide-toc{position:static;max-height:none;padding:20px}.guide-toc h2{display:none}.guide-toc nav{display:flex;overflow-x:auto;gap:14px;margin-top:10px;scrollbar-width:thin}.guide-toc nav>a{flex:none;max-width:215px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:9px 0}.guide-search input{font-size:13px}.guide-toc .search-count{margin-bottom:0}.area-card{padding:23px}.area-heading h3{font-size:19px}.area-card>p{font-size:14px}.area-grid{gap:15px}.join-layout{grid-template-columns:1fr 330px;gap:25px}.join-copy .welcome-note{font-size:15px}.join-instructions p{font-size:13px}.flow-section{grid-template-columns:1fr;gap:10px}.flow-title{max-width:600px}.page-heading h1{font-size:34px}.screen-section,.area-card,.feature-article{scroll-margin-top:145px}}
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html{scroll-behavior:auto}

.title-phrase{display:inline-block}@media(max-width:540px){.qr-panel{order:-1}}

/* AIChen's own channels: original user-provided images */
.follow-section{margin:0 0 56px;scroll-margin-top:110px}.follow-section .section-head{margin-bottom:24px}.follow-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.follow-card{display:flex;flex-direction:column;min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;scroll-margin-top:110px}.follow-card-heading{padding:26px 28px 0}.follow-platform{display:inline-block;font-size:11px;font-weight:650;letter-spacing:.02em;padding:5px 11px;border-radius:30px;line-height:1.5}.follow-platform-xhs{color:#b51e36;background:#fff0f2}.follow-platform-wechat{color:#227148;background:#edf7ef}.follow-card h3{font-size:25px;line-height:1.5;margin:12px 0 6px}.follow-card-heading>p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}.follow-card-heading strong{color:var(--ink);font-weight:600}.follow-image{display:flex;align-items:center;justify-content:center;height:444px;padding:20px;background:#fff;margin:22px 28px 0;border:1px solid var(--line);border-radius:8px;overflow:hidden}.follow-image img{display:block;max-width:100%;height:auto;object-fit:contain}.follow-image-xhs img{width:296px;max-height:404px}.follow-image-wechat img{width:280px}.follow-card-bottom{padding:20px 28px 27px;margin-top:auto}.follow-card-bottom>p{font-size:13px;color:var(--muted);line-height:1.9;min-height:50px;margin:0 0 16px}.follow-actions{display:flex;align-items:center;flex-wrap:wrap;gap:15px 20px}.follow-actions .button{font-size:12px;min-height:43px;padding:11px 15px}.follow-actions .text-link{font-size:12px}.follow-actions .icon{width:13px;height:13px}.community-group-heading{margin-bottom:26px}.community-group-heading h2{font-size:28px;line-height:1.5}.community-group-heading p{font-size:14px;color:var(--muted);line-height:1.9;margin:10px 0 0}.footer-links{flex-wrap:wrap}
@media(max-width:800px){.follow-grid{gap:18px}.follow-card-heading{padding:22px 20px 0}.follow-image{height:370px;margin:18px 20px 0;padding:16px}.follow-image-xhs img{max-height:336px;width:auto}.follow-image-wechat img{width:240px}.follow-card-bottom{padding:18px 20px 23px}.follow-actions{align-items:flex-start;flex-direction:column;gap:13px}.follow-section,.follow-card{scroll-margin-top:145px}}
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