:root{
  --bg:#FAF7F1;
  --card:#FFFCF7;
  --text:#1F1F1B;
  --muted:#6E7168;
  --line:#E8E0D3;
  --green:#6F8A70;
  --green2:#7E9B86;
  --green-soft:#EEF5EC;
  --blue-soft:#EAF2F5;
  --purple-soft:#F1EDFA;
  --yellow-soft:#F8F1D8;
  --clay:#B98A63;
  --shadow:0 10px 30px rgba(31,31,27,.08);
  --shadow-soft:0 5px 18px rgba(31,31,27,.06);
  --nav-h:84px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:'Noto Sans SC',system-ui,sans-serif;background:linear-gradient(140deg,#e7e3da,#f8f5ee);color:var(--text)}
button,input,textarea{font:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
.app-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.phone{position:relative;width:390px;height:844px;background:var(--bg);border-radius:38px;overflow:hidden;box-shadow:0 24px 80px rgba(31,31,27,.25);border:1px solid rgba(255,255,255,.55)}
/* 不再绘制假状态栏。移动端会使用用户手机自己的状态栏/浏览器区域。 */
.screen{position:absolute;left:0;right:0;top:0;bottom:var(--nav-h);overflow-y:auto;padding:36px 24px 126px;scroll-behavior:smooth}
.screen::-webkit-scrollbar{width:4px}.screen::-webkit-scrollbar-thumb{background:rgba(31,31,27,.25);border-radius:8px}
.bottom-nav{position:absolute;z-index:30;left:0;right:0;bottom:0;height:var(--nav-h);background:rgba(255,252,247,.94);backdrop-filter:blur(14px);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr);padding:10px 8px 9px}
.nav-item{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:10px;color:#8E8B84;position:relative}.nav-icon{font-size:22px;line-height:1}.nav-item.active{color:var(--green);font-weight:700}.nav-item.active::after{content:'';width:4px;height:4px;border-radius:50%;background:var(--green);position:absolute;bottom:0}
.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);background:#1f1f1b;color:#fff;border-radius:999px;padding:10px 18px;opacity:0;pointer-events:none;transition:.24s;z-index:999;font-size:14px}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* typography */
.brand-small{display:flex;gap:9px;align-items:center;font-family:'Noto Serif SC',serif;font-size:15px;font-weight:700;margin-bottom:22px}.hamb{font-size:23px;line-height:1}
.hero-title{font-family:'Cormorant Garamond',serif;font-size:58px;line-height:.9;font-weight:700;margin:0 0 12px}.hero-sub{font-size:15px;color:#3F433A;margin:0 0 30px}
.page-head{display:flex;align-items:baseline;gap:9px;margin-bottom:8px}.back{font-size:29px;line-height:1;margin-left:-4px}.page-title{font-family:'Noto Serif SC',serif;font-size:31px;line-height:1.15;font-weight:700;margin:0}.page-en{font-family:'Cormorant Garamond',serif;font-size:23px;color:#3F433A;font-weight:600}.desc{font-size:14px;line-height:1.75;color:var(--muted);margin:0 0 20px}.section-title{font-size:18px;font-weight:800;margin:22px 0 12px;display:flex;align-items:center;gap:8px}.section-title::before{content:'';width:5px;height:28px;border-radius:4px;background:var(--green)}
.title-row{display:flex;justify-content:space-between;align-items:center}.link{font-size:12px;color:var(--muted)}

/* general components */
.card{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-soft)}
.soft-card{background:var(--green-soft);border:1px solid #D6E4D1;border-radius:22px;box-shadow:var(--shadow-soft)}
.search-bar{height:58px;border-radius:23px;background:var(--card);border:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 20px;margin-bottom:22px;box-shadow:var(--shadow-soft);color:#3f433a;font-weight:600}.search-icon{color:var(--green);font-size:20px}.scan{font-size:18px;color:var(--muted)}
.primary{height:54px;border-radius:19px;background:linear-gradient(135deg,#678A68,#0E4D2E);color:white;font-weight:800;font-size:16px;box-shadow:0 10px 22px rgba(37,85,55,.22);display:flex;align-items:center;justify-content:center;gap:10px}.secondary{height:50px;border-radius:18px;background:var(--card);border:1px solid #BFD2BC;color:var(--green);font-weight:700}.action-block{margin:28px 0 10px}.action-block .primary,.action-block .secondary{width:100%}.action-block.dual-action,.action-block.recap-actions{display:grid;gap:12px}.action-block.dual-action{grid-template-columns:1fr 1.35fr}.action-block.recap-actions{grid-template-columns:1fr 1.45fr}
.pill{display:inline-flex;align-items:center;gap:5px;padding:7px 12px;border-radius:999px;border:1px solid #D8DED2;background:rgba(255,252,247,.75);color:#3f433a;font-size:12.5px}.pill.green{background:var(--green-soft);border-color:#D6E4D1;color:#5F7F61;font-weight:700}.chip{border:1px solid var(--line);background:var(--card);border-radius:16px;padding:8px 13px;font-weight:600;font-size:13px;color:#3f433a}.chip.selected{background:var(--green-soft);border-color:var(--green);color:#4F734F;box-shadow:0 0 0 1px rgba(111,138,112,.24)}
.grid{display:grid;gap:14px}.two{grid-template-columns:1fr 1fr}.three{grid-template-columns:repeat(3,1fr)}
.img{width:100%;height:100%;object-fit:cover;display:block}.thumb{border-radius:14px;overflow:hidden;background:#eee}.muted{color:var(--muted)}.small{font-size:12px}.serif{font-family:'Noto Serif SC',serif}.en{font-family:'Cormorant Garamond',serif}.divider{height:1px;background:var(--line);margin:14px 0}

/* home */
.feature-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0}.feature{padding:18px 14px 17px;min-height:108px}.feature .blob{width:36px;height:34px;border-radius:43% 57% 50% 50%;display:flex;align-items:center;justify-content:center;margin-bottom:12px}.feature h3{font-size:16px;margin:0 0 7px}.feature p{font-size:12px;margin:0;color:var(--muted)}
.home-visual{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;padding:18px;border-radius:24px;align-items:center}.home-visual h2{font-family:'Noto Serif SC',serif;font-size:25px;line-height:1.25;margin:0 0 12px}.home-visual p{font-size:13px;color:#3f433a;line-height:1.7;margin:0 0 16px}.home-art{height:145px;border-radius:18px;overflow:hidden;position:relative}.round-arrow{width:36px;height:36px;background:#235B35;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px}

/* exhibition */
.exhibition-card{padding:18px;display:grid;grid-template-columns:1fr 150px;gap:15px;min-height:185px;overflow:hidden;position:relative}.tag-soft{display:inline-flex;padding:7px 12px;border-radius:999px;background:var(--green-soft);color:var(--green);font-weight:700;font-size:12px;margin-bottom:18px}.exhibition-card h2{font-family:'Noto Serif SC',serif;font-size:25px;line-height:1.25;margin:0 0 14px}.exhibition-card p{color:var(--muted);font-size:13px;line-height:1.5;margin:0}.exhibition-img{height:140px;border-radius:16px;overflow:hidden;align-self:center}
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.category{height:56px;border-radius:17px;background:var(--card);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;text-align:center;font-size:12.5px;font-weight:700;color:#5b5d55}.recent{padding:14px 16px;margin-bottom:10px}.recent h4{margin:0 0 6px;font-size:14px}.recent p{margin:0;color:var(--muted);font-size:12px}

/* analysis */
.analysis-orbit{height:165px;display:flex;align-items:center;justify-content:center;position:relative;color:var(--green);font-size:24px}.orbit{position:absolute;width:190px;height:72px;border-radius:50%;border:1px dashed #BFC9B7;transform:rotate(-11deg)}.bot{width:54px;height:54px;border-radius:50%;background:var(--green-soft);display:flex;align-items:center;justify-content:center;font-size:28px;box-shadow:var(--shadow-soft)}
.step-list{padding:16px 18px}.step{display:flex;justify-content:space-between;align-items:center;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14px}.step:last-child{border-bottom:0}.step .status{font-weight:800;color:var(--green)}.progress-card{padding:16px 18px;margin-top:18px}.progress-head{display:flex;justify-content:space-between;font-weight:700}.bar{height:8px;background:#E3E3D9;border-radius:8px;overflow:hidden;margin-top:12px}.bar-fill{height:100%;width:0;background:linear-gradient(90deg,#7E9B86,#0E4D2E);transition:width .18s linear}

/* summary */
.summary-exhibition{padding:14px;display:grid;grid-template-columns:84px 1fr 34px;gap:14px;align-items:center}.summary-exhibition .thumb{height:66px}.summary-exhibition h3{margin:0 0 5px;font-size:16px}.summary-exhibition p{margin:0;font-size:12px;color:var(--muted)}.check-round{width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}.keyword-wrap{display:flex;flex-wrap:wrap;gap:9px}.structure-card{padding:16px 18px;margin-bottom:12px}.structure-card h3{margin:0 0 8px;font-size:16px}.structure-card p{margin:0;color:#555852;font-size:13px;line-height:1.6}.route-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.route-option{padding:12px 8px;text-align:center;border-radius:16px;background:var(--card);border:1px solid var(--line);font-size:12px;font-weight:800;color:#4a4d45}

/* preference */
.option-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.option{min-height:52px;border:1px solid var(--line);background:var(--card);border-radius:18px;display:flex;align-items:center;justify-content:center;text-align:center;font-weight:700;color:#555852;position:relative}.option.selected{border-color:var(--green);background:var(--green-soft);color:#426B47}.option.selected::after{content:'✓';position:absolute;right:-6px;top:-8px;background:var(--green);color:white;width:25px;height:25px;border-radius:50%;font-size:14px;display:flex;align-items:center;justify-content:center}.purpose-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.purpose{min-height:84px;padding:16px 14px;border-radius:20px;background:var(--card);border:1px solid var(--line);position:relative}.purpose.selected{border-color:var(--green);background:linear-gradient(135deg,#F6FBF4,#FFFCF7);box-shadow:0 0 0 1px rgba(111,138,112,.24)}.purpose.selected::after{content:'✓';position:absolute;right:-6px;top:-8px;background:var(--green);color:white;width:25px;height:25px;border-radius:50%;display:flex;align-items:center;justify-content:center}.purpose b{display:block;font-size:16px;margin-bottom:6px}.purpose span{font-size:12px;color:var(--muted)}.interest-grid{display:flex;flex-wrap:wrap;gap:10px}.ai-input-card{padding:0;overflow:hidden}.ai-input{width:100%;min-height:138px;border:0;background:transparent;resize:vertical;padding:18px 20px;font-size:14px;line-height:1.8;color:#3f433a;outline:none}.input-tools{border-top:1px dashed var(--line);height:50px;display:flex;align-items:center;gap:18px;padding:0 18px;color:var(--muted)}.tool-icon{width:22px;height:22px;display:inline-block}.send-mini{margin-left:auto;width:40px;height:40px;border-radius:50%;background:var(--green);display:flex;align-items:center;justify-content:center;color:#fff}.hint{padding:12px 14px;border-radius:16px;background:var(--green-soft);color:#5F7F61;font-size:12.5px;line-height:1.5;margin-top:14px}

/* route */
.ai-card{padding:20px 20px 18px}.ai-card h3,.route-card h3{margin:0 0 12px;font-size:19px}.ai-card p{font-size:15px;line-height:1.9;color:#3f433a;margin:0 0 14px}.tag-list{display:flex;gap:8px;flex-wrap:wrap}.route-card{padding:20px;margin-top:18px}.route-card p{font-size:14px;color:#3f433a;line-height:1.8;margin:0 0 14px}.route-stats{display:flex;justify-content:space-around;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);padding:13px 0;margin:14px 0;font-size:12px;color:#4f734f;font-weight:800}.node{display:grid;grid-template-columns:34px 1fr auto;gap:12px;padding:14px 0;border-bottom:1px solid rgba(232,224,211,.7)}.node:last-child{border-bottom:0}.node-num{width:28px;height:28px;border-radius:50%;background:var(--green);color:white;display:flex;align-items:center;justify-content:center;font-weight:800}.node h4{margin:0 0 5px;font-size:15px}.node p{margin:0;color:var(--muted);font-size:12.5px;line-height:1.55}.node-time{font-size:12px;color:var(--green);font-weight:700}

/* guided */
.stop-progress{padding:10px 12px;display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.stop-tab{font-size:11px;text-align:center;color:var(--muted);padding:9px 3px;border-radius:14px;background:#F5F1EA}.stop-tab.active{background:var(--green);color:#fff;font-weight:800}.artwork-main{display:grid;grid-template-columns:148px 1fr;gap:14px;padding:14px}.artwork-main .thumb{height:150px}.artwork-main h2{font-family:'Noto Serif SC',serif;font-size:22px;margin:5px 0 8px}.artwork-main p{margin:0 0 12px;color:var(--muted);font-size:13px;line-height:1.6}.reason{padding:18px 18px}.reason p{font-size:14px;line-height:1.85;margin:10px 0 0;color:#3f433a}.tips{padding:18px}.tip{display:grid;grid-template-columns:32px 1fr 24px;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.tip:last-child{border-bottom:0}.tip-num{width:30px;height:30px;border-radius:10px;background:var(--green);color:white;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:12px}.tip h4{margin:0 0 5px;font-size:14px}.tip p{margin:0;color:var(--muted);font-size:12.5px;line-height:1.55}.question-card{padding:16px 18px;background:#FBF2E5;border:1px solid #EFE2CE}.culture-card{padding:16px 18px;background:var(--green-soft);border:1px solid #D6E4D1}.question-card h3,.culture-card h3{margin:0 0 9px;font-size:16px}.question-card p,.culture-card p{font-size:13px;line-height:1.75;margin:0;color:#3f433a}.dual-action{display:grid;grid-template-columns:1fr 1.35fr;gap:12px}
.favorite.on{background:#EFF7EF;color:#416F43;border-color:var(--green)}

/* recap */
.completion{padding:18px;display:grid;grid-template-columns:46px 1fr;gap:14px}.completion .check-big{width:42px;height:42px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:22px}.completion h3{margin:0 0 8px;font-size:18px}.completion p{margin:0;color:#3f433a;line-height:1.65;font-size:13px}.stats-grid{grid-column:1/3;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:14px}.stat{background:rgba(255,252,247,.7);border:1px solid #DDE7DA;border-radius:14px;padding:9px 6px;text-align:center}.stat b{display:block;color:var(--green);font-size:15px}.stat span{font-size:10px;color:var(--muted)}.takeaways{padding:17px 18px}.takeaway{display:flex;gap:10px;margin-bottom:12px}.takeaway:last-child{margin-bottom:0}.takeaway b{min-width:62px;color:var(--green)}.takeaway span{font-size:13px;line-height:1.65;color:#3f433a}.badge-list{display:grid;gap:10px}.badge{display:grid;grid-template-columns:44px 1fr;gap:12px;padding:13px;border-radius:18px;background:var(--card);border:1px solid var(--line)}.badge-icon{width:42px;height:42px;border-radius:50%;background:var(--yellow-soft);display:flex;align-items:center;justify-content:center;font-size:20px}.badge h4{margin:0 0 4px;font-size:14px}.badge p{margin:0;color:var(--muted);font-size:12px}.growth{padding:18px}.growth-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px}.share-card{padding:22px 22px 20px;border-radius:26px;background:linear-gradient(180deg,#FFFCF7,#F8F1E4);border:1px solid #D8D0C0;box-shadow:0 12px 30px rgba(31,31,27,.1);position:relative;overflow:hidden}.share-card::after{content:'';position:absolute;right:-28px;bottom:-28px;width:150px;height:150px;background:url('assets/landscape-art.svg') center/cover;opacity:.12;border-radius:50%}.share-card .label{font-family:'Cormorant Garamond',serif;letter-spacing:1px;color:var(--green);font-size:13px}.share-card h2{font-family:'Noto Serif SC',serif;font-size:25px;line-height:1.25;margin:12px 0}.share-card p{font-size:13px;line-height:1.8;color:#3f433a;margin:0 0 13px}.share-keywords{display:flex;flex-wrap:wrap;gap:7px;margin:13px 0}.share-card footer{font-family:'Cormorant Garamond',serif;color:var(--muted);font-size:13px;margin-top:12px}.recap-actions{display:grid;grid-template-columns:1fr 1.45fr;gap:12px;margin-top:16px}.profile-placeholder{text-align:center;padding:80px 20px;color:var(--muted)}

@media(max-width:520px){.app-shell{padding:0}.phone{width:100vw;height:100dvh;border-radius:0;border:0;box-shadow:none}.screen{padding:28px 22px calc(132px + env(safe-area-inset-bottom))}.bottom-nav{padding-bottom:calc(9px + env(safe-area-inset-bottom));height:calc(var(--nav-h) + env(safe-area-inset-bottom))}.hero-title{font-size:54px}}


/* v2 polish */
.page-head{margin-top:4px}.page-title{letter-spacing:-.02em}.page-en{white-space:nowrap}.primary{min-width:0}.reason{display:block!important}.reason h3{margin:0 0 10px}.reason p{width:100%;max-width:none;white-space:normal;word-break:normal;overflow-wrap:break-word;text-align:left}.artwork-main,.reason,.tips,.question-card,.culture-card,.route-card,.ai-card{min-width:0}.artwork-main{grid-template-columns:136px minmax(0,1fr)}.artwork-main .thumb{height:142px}.artwork-main h2{font-size:20px}.artwork-main .pill{font-size:11.5px;padding:6px 9px}.stop-progress{grid-template-columns:repeat(4,minmax(0,1fr))}.stop-tab{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.home-art .img,.exhibition-img .img,.summary-exhibition .img{object-position:center}.home-visual{grid-template-columns:1fr .92fr}.route-card{margin-bottom:18px}.node{align-items:start}.node-time{white-space:nowrap}.input-tools svg{display:block;width:22px;height:22px}.send-mini svg{width:20px;height:20px}.bottom-nav svg{width:22px;height:22px}.nav-item{gap:5px}.nav-icon{display:flex;align-items:center;justify-content:center;height:24px}

/* v3: static action buttons live at the bottom of each scroll page, never over content */
.action-block{position:static!important;background:none!important;padding:0!important;pointer-events:auto!important}
.action-block .primary{min-height:54px}
.home-art,.exhibition-img{background:linear-gradient(135deg,#eef5ec,#f8f1d8)}
.home-art .img,.exhibition-img .img,.summary-exhibition .thumb .img{object-fit:cover;object-position:center}
.summary-exhibition .thumb{background:linear-gradient(135deg,#eef5ec,#f8f1d8)}