:root{--background:#FAF6EF;--paper:#FFFDF9;--surface:#fff;--surface-warm:#F6EEE2;--terracotta:#B9543C;--terracotta-dark:#913E2D;--forest:#295C4D;--forest-dark:#21483D;--forest-soft:#E6F0E8;--peach:#E9AA93;--butter:#E9C675;--lavender:#A296B8;--mist-blue:#7697A5;--ink:#302F2B;--body:#4D4A45;--muted:#6B6861;--border:#E8E0D5}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--background);color:var(--body);font:16px/1.8 system-ui,-apple-system,"Microsoft Yahei",sans-serif}a{color:var(--forest);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto;display:block}h1,h2,h3{color:var(--ink);line-height:1.3;margin:0 0 .65em}h1{font-size:clamp(29px,3.2vw,42px)}h2{font-size:clamp(23px,2.2vw,28px)}h3{font-size:18px}p{margin:.5em 0 1.2em}.wrap{max-width:1280px;margin:0 auto;padding-left:22px;padding-right:22px}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;background:white;z-index:100}.topbar{background:rgba(255,253,249,.97);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--border)}.topbar-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;line-height:1.3;min-width:195px}.brand strong{display:block;font-size:21px;color:var(--terracotta)}.brand small{font-size:12px;color:var(--muted)}.logo{width:90px;height:44px;object-fit:contain}.main-nav{display:flex;gap:26px;align-items:center}.main-nav a{font-size:14px;font-weight:650;color:var(--body)}.main-nav a[aria-current]{color:var(--terracotta);border-bottom:2px solid var(--terracotta);padding-bottom:5px}.top-actions{display:flex;gap:12px}.search-shortcut{font-size:26px}.menu-toggle{display:none}.menu-overlay[hidden]{display:none}.mobile-drawer{display:none}.menu-open{overflow:hidden}.section{margin:76px 0}.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;min-height:390px;margin-top:34px;background:var(--paper);border:1px solid var(--border);border-radius:26px;overflow:hidden}.hero-copy{padding:52px 46px}.eyebrow{display:inline-block;letter-spacing:.09em;font-size:12px;color:var(--terracotta);font-weight:750;margin-bottom:14px}.hero h1{font-size:clamp(32px,4vw,48px);letter-spacing:-.035em}.hero em{font-style:normal;color:var(--forest)}.hero-copy p{max-width:510px}.hero-art{position:relative;min-height:370px;background:linear-gradient(135deg,#f0d2b7,#d5e7d6 60%,#f5ddba);display:flex;justify-content:center;align-items:center;overflow:hidden}.hero-img{position:absolute;width:100%;height:100%;object-fit:cover}.postmark{position:absolute;right:12%;top:13%;border:2px dashed #7d6657;border-radius:50%;padding:15px;color:#745f4c;transform:rotate(16deg);font-size:13px;line-height:1.3;text-align:center;background:#fff9efaa}.hero-note{position:absolute;left:10%;bottom:12%;background:#fffdf3e6;border-radius:12px;padding:18px 24px;box-shadow:0 8px 24px #6e59401c;color:var(--forest);font-weight:700}.buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{background:var(--terracotta);color:white;border:1px solid var(--terracotta);border-radius:12px;padding:10px 20px;font-size:15px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;min-height:44px}.btn:hover{background:var(--terracotta-dark);text-decoration:none}.btn.ghost{background:transparent;color:var(--forest);border-color:#b4c9b8}.btn.light{background:#fff7ed;color:var(--forest);border-color:white}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:24px}.section-heading h2{margin:0}.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.category-card{background:var(--tint);border:1px solid #ffffff99;padding:22px;min-height:187px;border-radius:18px;transition:transform .2s}.category-card:hover{transform:translateY(-3px);text-decoration:none}.category-card .emoji{font-size:29px}.category-card h3{margin:10px 0 5px;color:var(--forest)}.category-card p{font-size:14px;line-height:1.6;color:var(--body)}.notebook{background:#f6efe4;padding:28px;border-radius:25px}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.topic-card{background:var(--paper);border:1px solid var(--border);padding:22px;border-radius:16px;min-width:0}.topic-card:nth-child(4n+2){background:#f4f1e9}.topic-card:nth-child(4n+3){background:#eff5f1}.topic-card h3{margin:9px 0}.topic-card p{font-size:14px}.small{font-size:13px;color:var(--muted)}.question{font-size:14px;padding:14px;background:#ffffffa8;border-left:3px solid var(--terracotta);margin:12px 0}.topic-card a{font-size:14px;font-weight:700}.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}.split.reverse{grid-template-columns:1fr 1fr}.photo-panel{min-height:325px;background:#e5e8d7;border-radius:24px;position:relative;display:flex;align-items:center;justify-content:center}.wide-photo{width:100%;height:325px;object-fit:cover;border-radius:24px}.art-emoji{font-size:90px;position:absolute;right:10%;bottom:5%;filter:drop-shadow(0 8px 8px #0002)}.text-link{font-weight:750}.connection-map{display:flex;gap:14px;align-items:center;justify-content:center;flex-wrap:wrap;background:radial-gradient(circle at center,#e7f1e7,#f8eee4 70%);padding:40px;border-radius:25px;min-height:260px}.connection-map a{background:white;border:1px solid #d1dfd2;padding:13px 18px;border-radius:50px;white-space:nowrap}.map-center{background:var(--forest);color:white;padding:22px;border-radius:50%;width:124px;height:124px;display:grid;place-items:center;text-align:center;line-height:1.35}.feature-strip{background:#f0ecf5;display:grid;grid-template-columns:1fr 240px;align-items:center;gap:40px;padding:40px;border-radius:25px}.record-disc{background:radial-gradient(circle,#e7c47c 0 10%,#332b43 11% 20%,#595269 21% 22%,#332b43 23% 40%,#625c75 41% 42%,#332b43 43% 100%);color:white;border-radius:50%;width:210px;aspect-ratio:1;display:grid;place-items:center;font-size:40px;box-shadow:12px 18px 35px #0002}.editor-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.editor-grid a{background:var(--paper);border:1px solid var(--border);padding:17px;border-radius:16px;min-width:0}.editor-grid img{width:100%;height:160px;object-fit:cover;border-radius:10px;margin-bottom:15px}.editor-grid span{font-size:12px;color:var(--terracotta);font-weight:700}.editor-grid h3{margin:8px 0}.editor-grid p{font-size:14px}.soft-block{background:var(--forest-soft);border-radius:22px;padding:32px}.big-icon{font-size:58px}.night-section{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:36px;background:var(--forest-dark);color:#f6e8d3;padding:44px;border-radius:26px}.night-section h2{color:#fff8eb}.night-section .eyebrow{color:#e9c675}.night-quote{font-family:serif;font-size:clamp(22px,3vw,33px);color:#f4d6b6;line-height:1.7;text-align:center}.room-mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.room-mini{display:flex;flex-direction:column;gap:4px;background:white;border-radius:16px;padding:21px;border:1px solid var(--border)}.room-mini span{font-size:27px}.room-mini small{color:var(--muted)}.muted{color:var(--muted);font-size:14px}.guide-row{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.guide-row article{border-top:2px solid var(--terracotta);padding-top:14px}.guide-row b{color:var(--terracotta)}.guide-row p{font-size:14px}.closing{text-align:center;background:#f6e2d0;padding:65px 20px;border-radius:24px;margin:76px 0}.closing span{font-size:12px;color:var(--terracotta);font-weight:750;letter-spacing:.08em}.closing .buttons{justify-content:center}.page-intro{padding:55px 0 35px;max-width:850px}.page-intro.compact{padding:38px 0 22px}.page-intro p{font-size:17px}.discover-layout{display:grid;grid-template-columns:195px minmax(0,1fr) 235px;gap:22px;align-items:start}.side-index,.side-note,.room-rules,.chat-info,.chat-tip,.about-side{background:var(--paper);border:1px solid var(--border);border-radius:16px;padding:18px}.side-index{position:sticky;top:88px}.side-index h2,.side-note h2,.chat-info h2,.chat-tip h2{font-size:18px}.side-index a{display:flex;justify-content:space-between;align-items:center;color:var(--body);padding:11px 7px;border-radius:9px;font-size:13px;gap:8px}.side-index a[aria-current]{background:var(--forest);color:white}.side-index small{font-size:11px}.side-note p,.side-note a{font-size:14px}.side-note hr{border:0;border-top:1px solid var(--border);margin:23px 0}.content-toolbar{display:flex;justify-content:space-between;gap:8px;margin-bottom:15px;color:var(--muted);font-size:14px}.pagination{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.pagination a{padding:7px 13px;background:white;border-radius:8px;border:1px solid var(--border)}.pagination a[aria-current]{background:var(--forest);color:#fff}.rooms-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px;align-items:start}.room-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.room-card{background:white;border:1px solid var(--border);border-radius:18px;padding:23px}.room-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.room-icon{width:54px;height:54px;display:grid;place-items:center;border-radius:14px;font-size:27px}.status{font-size:12px;color:var(--forest);background:#eaf2ed;border-radius:30px;padding:6px 10px}.room-card h2{font-size:22px}.room-card p{font-size:14px}.room-card a{font-weight:700}.room-rules{position:sticky;top:90px}.room-rules h2{font-size:19px}.room-rules h3{font-size:16px}.room-rules p{font-size:14px}.learning-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.learning-card{padding:25px;border-radius:17px;border:1px solid var(--border);background:white}.learning-card:nth-child(3n+2){background:#f1f5ef}.index-number{font-size:12px;letter-spacing:.2em;color:var(--terracotta);font-weight:700}.learning-card h3{margin:12px 0}.learning-card p{font-size:14px}.practice{background:#f8eee2;padding:13px;border-radius:10px}.practice p{margin:5px 0}.selected-topic{background:#fff4df;border:1px solid var(--border);padding:28px;border-radius:17px}.copy-line{display:flex;align-items:center;justify-content:space-between;gap:14px;border-bottom:1px solid var(--border);padding:12px 0}.copy-line button{border:1px solid var(--forest);color:var(--forest);background:transparent;border-radius:8px;padding:5px 12px;white-space:nowrap}.random-topic{display:grid;grid-template-columns:1fr 1fr;gap:24px;background:#e6f0e8;padding:32px;border-radius:19px}.random-quote{font-size:22px;color:var(--forest);font-weight:650}.random-topic .btn{margin:6px}.search-form{background:white;border:1px solid var(--border);border-radius:16px;padding:22px}.search-form label{display:block;font-weight:700;margin-bottom:10px}.search-controls{display:flex;gap:12px}.search-controls input{flex:1;min-width:0}.search-controls input,.search-controls select,.chat-form input,.chat-form textarea{border:1px solid #c9c9bd;background:#fffdf9;border-radius:10px;padding:10px 12px;min-height:44px;color:var(--ink)}.search-results{max-width:900px}.result{padding:17px 0;border-bottom:1px solid var(--border)}.result h3{margin:5px 0}.result p{font-size:14px}.error{color:#a12c28}.about-grid{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:48px;align-items:start}.about-grid section h2{margin-top:38px}.about-side a{display:block;margin:7px 0}.about-side h2{font-size:19px;margin-top:22px}.about-side h3{font-size:15px;margin-top:20px}.about-side p{font-size:14px}.chat-layout{display:grid;grid-template-columns:195px minmax(0,1fr) 220px;gap:18px;align-items:start}.chat-info p,.chat-tip p{font-size:13px}.chat-main{border:1px solid var(--border);border-radius:16px;background:white;overflow:hidden;min-width:0}.chat-bar{padding:15px 18px;display:flex;justify-content:space-between;gap:10px;border-bottom:1px solid var(--border);align-items:center}.unavailable{text-align:center;padding:65px 25px;min-height:350px}.unavailable span{font-size:55px}.unavailable h2{font-size:22px}.unavailable p{max-width:420px;margin:15px auto}.chat-notice{background:#fff4e5;font-size:12px;padding:8px 15px}.messages{height:380px;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:13px}.message-item{background:#f3f6f0;border-radius:14px;padding:11px 15px;overflow-wrap:anywhere}.message-meta{display:flex;gap:12px;align-items:center;font-size:12px}.message-meta time{color:var(--muted)}.message-item p{margin:3px 0;white-space:pre-wrap;font-size:14px}.chat-form{border-top:1px solid var(--border);padding:18px;display:grid;gap:7px}.chat-form label{font-size:13px;font-weight:700}.chat-form textarea{resize:vertical}.chat-send{display:flex;justify-content:space-between;align-items:center;gap:10px}.chat-send small{font-size:11px;color:var(--muted)}.form-feedback{margin:0;font-size:13px;color:var(--forest)}.site-footer{background:#e9e7dd;margin-top:65px;padding:35px 0 75px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:35px}.footer-grid a{display:block;font-size:14px;margin:6px 0}.footer-grid h3{font-size:16px}.footer-grid p{font-size:13px}.copyright{font-size:12px;border-top:1px solid #d4d0c3;padding-top:16px;margin-top:18px}.bottom-nav{display:none}.missing{text-align:center;padding:100px 0}
@media(max-width:1150px){.discover-layout{grid-template-columns:185px minmax(0,1fr)}.side-note{display:none}.chat-layout{grid-template-columns:175px minmax(0,1fr)}.chat-tip{display:none}.main-nav{gap:13px}.brand{min-width:auto}}@media(max-width:800px){.wrap{padding-left:18px;padding-right:18px}.main-nav{display:none}.menu-toggle{display:block;background:transparent;border:0;font-size:23px;color:var(--forest)}.menu-overlay{position:fixed;inset:0;background:#0007;z-index:29}.mobile-drawer{display:flex;position:fixed;top:0;right:0;bottom:0;background:var(--paper);z-index:30;width:min(310px,85vw);padding:25px;flex-direction:column;gap:18px;transform:translateX(110%);transition:transform .2s}.mobile-drawer.open{transform:translateX(0)}.mobile-drawer a{font-size:17px;border-bottom:1px solid var(--border);padding-bottom:8px}.close-menu{align-self:end;border:0;background:transparent;padding:10px}.hero{grid-template-columns:1fr}.hero-copy{padding:32px}.hero-art{min-height:250px}.category-grid{grid-template-columns:repeat(2,1fr)}.topic-grid{grid-template-columns:repeat(2,1fr)}.split,.split.reverse,.night-section,.random-topic{grid-template-columns:1fr}.feature-strip{grid-template-columns:1fr 160px}.record-disc{width:150px}.editor-grid{grid-template-columns:1fr 1fr}.room-mini-grid{grid-template-columns:repeat(2,1fr)}.guide-row{grid-template-columns:1fr 1fr}.discover-layout{display:block}.side-index{position:static;display:flex;overflow-x:auto;gap:6px;margin-bottom:20px;padding:10px}.side-index h2{display:none}.side-index a{white-space:nowrap;min-width:max-content}.rooms-layout{grid-template-columns:1fr}.room-rules{position:static}.about-grid{grid-template-columns:1fr;gap:16px}.chat-layout{display:block}.chat-info{margin-bottom:16px}.footer-grid{grid-template-columns:1fr 1fr}.bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fffdf9;border-top:1px solid var(--border);justify-content:space-around;padding:10px 6px env(safe-area-inset-bottom);z-index:21}.bottom-nav a{font-size:13px;padding:4px 8px}.site-footer{padding-bottom:110px}}@media(max-width:500px){.wrap{padding-left:16px;padding-right:16px}.topbar-inner{min-height:68px}.brand strong{font-size:19px}.brand small{font-size:11px}.hero-copy{padding:28px 22px}.section{margin:48px 0}.section-heading{align-items:start;flex-direction:column}.category-grid{gap:10px}.category-card{padding:17px;min-height:190px}.category-card h3{font-size:16px}.category-card p{font-size:12px}.topic-grid,.editor-grid,.guide-row,.room-grid,.learning-grid{grid-template-columns:1fr}.notebook{padding:18px}.feature-strip{grid-template-columns:1fr}.record-disc{margin:auto}.night-section{padding:27px}.page-intro{padding:35px 0 22px}.search-controls{flex-direction:column}.search-controls select{min-height:44px}.footer-grid{grid-template-columns:1fr;gap:15px}.copy-line{align-items:start;flex-direction:column}.chat-bar{align-items:start;flex-direction:column}.chat-send{align-items:stretch;flex-direction:column}.chat-send button{width:100%}.messages{height:360px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

.topic-photo{height:125px;width:100%;object-fit:cover;border-radius:10px;margin-bottom:13px}.circle-photo{height:75px;width:100%;object-fit:cover;border-radius:10px;margin-bottom:8px}.feature-photo{height:130px;width:100%;object-fit:cover;border-radius:12px;margin-bottom:12px}.scene-photo{max-height:170px;object-fit:cover;border-radius:13px;margin-bottom:10px}.night-quote .scene-photo{max-width:240px;margin:0 auto 15px}.soft-block .scene-photo{max-width:350px}
/* Edition Two: editorial boards and asymmetric feature system; retained original palette. */
.v2-hero{background:linear-gradient(132deg,var(--surface-warm),var(--paper));border-bottom:5px solid var(--forest);}
.v2-hero h1{letter-spacing:-.055em}.v2-featured{border-top:1px dashed var(--border);padding-top:40px}
.v2-featured .topic-grid .topic-card:nth-child(3n+2){transform:translateY(13px)}
.v2-featured .topic-grid .topic-card:nth-child(3n){border-top:4px solid var(--forest)}
.about-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:44px 0}
.about-panel{padding:28px;background:var(--paper);border:1px solid var(--border);border-radius:18px}
.about-panel:nth-child(2){background:var(--forest-soft)}.about-panel:nth-child(3){background:var(--peach-soft)}
.about-panel h2{margin:0 0 16px;color:var(--forest)}.about-panel h3{margin:20px 0 8px}.about-panel p{line-height:1.85}
@media(max-width:720px){.about-grid{grid-template-columns:1fr}.v2-featured .topic-grid .topic-card{transform:none!important}}
