/* 组件样式：所有颜色/字号/时长均取自 design/tokens.css，不得写死 */
*{box-sizing:border-box}
body{margin:0;background:var(--c-archive-black);color:var(--c-text);font:400 var(--fs-body)/var(--lh-body) var(--f-sans);padding-bottom:env(safe-area-inset-bottom)}
h1,h2,h3{font-family:var(--f-serif)}
a{color:var(--c-link)}
.mono{font-family:var(--f-mono);letter-spacing:var(--ls-tag);font-variant-numeric:tabular-nums}
.bg{position:fixed;inset:0;z-index:-1}.bg>div{position:absolute;inset:0;will-change:opacity}
:root{--depth:0}
.bg1{background:var(--c-soil-black)}
.bg2{background:var(--c-sediment-black);opacity:clamp(0,calc(var(--depth) * 2),1)}
.bg3{background:var(--c-archive-black);opacity:clamp(0,calc(var(--depth) * 2 - 1),1)}
.screen{display:none}
body[data-state=S0] #S0,body[data-state=S1] #S1,body[data-state=SE] #SE,body[data-state=SP] #SP,body[data-state=S2] #S2,body[data-state=S3] #S2{display:block}
#S0,#S1,#SE,#SP{max-width:560px;margin:0 auto;padding:12vh 20px 80px}
#S1,#SE{text-align:center}
h1{font-size:var(--fs-town);font-weight:700;margin:0}
.sub{color:var(--c-text-2);margin:4px 0 24px}
.search{display:flex;gap:8px}
.search input{flex:1;min-width:0;background:var(--c-sediment-black);border:1px solid var(--c-text-3);border-radius:12px;color:var(--c-text);padding:12px 14px;font:var(--fs-body) var(--f-sans);outline:none}
.search input::placeholder{color:var(--c-text-3)}
.search input:focus{border-color:var(--c-text-2)}
button{font:500 var(--fs-btn) var(--f-sans);cursor:pointer}
.cta{background:var(--c-cinnabar);color:var(--c-text);border:0;border-radius:12px;padding:10px 18px}
.cta:hover,.cta:focus-visible{background:var(--c-cinnabar-hi)}
.ghost{background:none;border:1px solid var(--c-text-3);color:var(--c-text-2);border-radius:12px;padding:8px 14px}
.textbtn{background:none;border:0;color:var(--c-text-2);padding:4px}
.textbtn.red{color:var(--c-cinnabar)}
.row-btns{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:14px}
#SE .row-btns{justify-content:center}
.chk{color:var(--c-text-3-a11y);font-size:var(--fs-tag)}
.inline-err{margin-top:10px;color:var(--c-cinnabar-hi)}
.hint{color:var(--c-text-3-a11y);font-size:var(--fs-tag);margin-top:28px}
.history{margin-top:24px}.hist-head{display:flex;justify-content:space-between;font-size:var(--fs-src);color:var(--c-text-3-a11y)}
.chips{display:flex;flex-wrap:wrap;gap:8px}.chips button{background:var(--c-sediment-black);border:0;color:var(--c-text-2);border-radius:999px;padding:4px 12px;font-size:var(--fs-tag)}
.notice{background:var(--c-soil-black);color:var(--c-text-2);font-size:var(--fs-tag);padding:6px 14px;text-align:center;border-bottom:1px solid var(--c-cinnabar-fog)}
.notice:empty{display:none}
.compass{width:64px;height:64px;animation:spin var(--d-compass) linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-main{font:var(--fs-layer) var(--f-serif)}.step{font-size:var(--fs-tag);color:var(--c-text-3-a11y)}
.picklist{display:flex;flex-direction:column;gap:8px;margin:12px 0}
.picklist button{text-align:left;background:var(--c-sediment-black);border:1px solid var(--c-asphalt);color:var(--c-text);border-radius:10px;padding:10px 14px}
.picklist button small{display:block;color:var(--c-text-3-a11y);font-size:var(--fs-tag)}
.picklist .grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px}
.pill{font-size:var(--fs-src);border-radius:4px;padding:0 6px;margin-left:6px}
.pill.done{background:var(--c-bronze);color:var(--c-text)}.pill.pend{border:1px solid var(--c-text-3-a11y);color:var(--c-text-3-a11y)}
.topbar{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 16px;background:color-mix(in srgb,var(--c-archive-black) 95%,transparent);border-bottom:1px solid var(--c-asphalt)}
.depth{position:sticky;top:49px;z-index:5;display:flex;gap:12px;align-items:center;font-size:var(--fs-tag);padding:4px 16px;background:color-mix(in srgb,var(--c-archive-black) 90%,transparent);color:var(--c-text-2)}
.depth .bar{flex:1;height:3px;background:var(--c-asphalt);overflow:hidden}.depth i{display:block;height:3px;width:100%;background:var(--c-cinnabar);transform-origin:0 50%;transform:scaleX(var(--depth));will-change:transform}
#depthYear.flip{animation:flip var(--d-tag) ease-out}@keyframes flip{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.s2body{display:flex;max-width:980px;margin:0 auto}
.ruler{display:none}
main{flex:1;min-width:0;padding:16px}
@media(min-width:768px){.ruler{display:block;width:80px;flex:none;position:sticky;top:90px;align-self:flex-start;font-size:var(--fs-src);padding:16px 4px;color:var(--c-text-3-a11y)}
 .ruler div{padding:3px 0;border-right:2px solid transparent;transition:color var(--d-tag) ease-out}.ruler div.on{color:var(--c-cinnabar);border-color:var(--c-cinnabar)}}
.banner{background:var(--c-cinnabar-fog);border:1px solid var(--c-cinnabar);border-radius:12px;padding:14px 16px;margin-bottom:16px}
.card:not(.landmark-card){border-radius:12px}
.card{padding:20px;margin-bottom:16px}
.here{background:var(--c-sediment-black);border:1px solid var(--c-asphalt)}
.here .crumb{font-size:var(--fs-tag);color:var(--c-text-2)}.here h2{font-size:var(--fs-town);margin:2px 0}
.here b{color:var(--c-gold)}.note{color:var(--c-text-2);font-size:var(--fs-tag)}
.landmark .tl .tag{margin-right:4px}
.landmark h3,.modern h3{font-size:var(--fs-layer);color:var(--c-cinnabar);margin:0 0 6px}
.modern{background:var(--c-soil-black);border:1px solid var(--c-text-3)}
.tl{list-style:none;padding:0;margin:8px 0;border-left:1px solid var(--c-text-3)}
.tl li{padding-left:16px;position:relative;margin:6px 0}.tl li:before{content:"●";position:absolute;left:-6px;color:var(--c-cinnabar);font-size:10px}
.became{color:var(--c-gold);font-family:var(--f-serif)}
.estab{color:var(--c-text-2);font-size:var(--fs-tag);margin:0 0 12px}
.badge{display:inline-block;font:var(--fs-src)/1.6 var(--f-sans);border-radius:4px;padding:0 6px;background:var(--c-soil-black);color:var(--c-gold);border:1px solid var(--c-gold);vertical-align:middle}
.layer{position:relative;cursor:pointer;transition:transform var(--d-tap) var(--e-tap)}
.layer canvas{display:block;width:100%}
.layer:focus-visible{outline:2px solid var(--c-cinnabar);outline-offset:-2px}
/* 进入动画（tokens.css .layer-enter/.is-in）结束后才切换到敲击回弹，避免覆盖 stagger */
.layer.settled{transition:transform var(--d-tap) var(--e-tap)}
.layer.settled.tap{transform:scale(.98)}
.layer .lv{position:absolute;right:10px;top:8px}
.end{text-align:center;padding:40px 0 80px;color:var(--c-text-2)}
.mask{position:fixed;inset:0;background:#000;opacity:0;pointer-events:none;transition:opacity var(--d-sheet-out) var(--e-sheet-out);z-index:20}
.mask.on{opacity:var(--scrim);pointer-events:auto;transition:opacity var(--d-sheet-in) var(--e-sheet-in)}
.sheet{position:fixed;left:0;right:0;bottom:0;height:85vh;background:var(--c-sediment-black);border-radius:var(--radius-sheet) var(--radius-sheet) 0 0;z-index:21;transform:translateY(100%);transition:transform var(--d-sheet-out) var(--e-sheet-out);padding:12px 22px 40px;overflow:auto;max-width:720px;margin:0 auto}
.sheet.on{transform:none;transition:transform var(--d-sheet-in) var(--e-sheet-in)}
.handle{width:36px;height:4px;border-radius:2px;background:var(--c-text-3);margin:0 auto 12px}
.x{position:absolute;right:14px;top:8px;background:none;border:0;color:var(--c-text-2);font-size:24px}
.sheet h2{font-size:var(--fs-layer);margin:6px 0 0}.sheet .st{font-size:var(--fs-tag);color:var(--c-text-2)}
.src{margin-top:8px}
.toast{position:fixed;left:50%;bottom:60px;transform:translateX(-50%);background:var(--c-sediment-black);border:1px solid var(--c-text-3);padding:8px 16px;border-radius:10px;opacity:0;transition:opacity var(--d-tag);pointer-events:none;z-index:30}
.toast.on{opacity:1}
.attribution{font-size:var(--fs-src);color:var(--c-text-3-a11y);text-align:center;padding:12px;position:relative;z-index:1}

.unv{display:inline-block;font:var(--fs-src)/1.4 var(--f-sans);color:var(--c-text-3-a11y);border:1px dashed var(--c-text-3);border-radius:3px;padding:0 4px;vertical-align:middle;opacity:.8}
.layer .lv.unv{background:color-mix(in srgb,var(--c-archive-black) 60%,transparent)}
.src a{color:var(--c-link);text-decoration:none;word-break:break-all}.src a:hover{text-decoration:underline}
body.lock{overflow:hidden}
.sheet{touch-action:pan-y;will-change:transform}.sheet:focus{outline:none}
.share-modal{position:fixed;inset:0;z-index:40;background:color-mix(in srgb,var(--c-archive-black) 92%,transparent);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px}
.share-modal[hidden]{display:none}
.share-frame{position:relative;width:min(80vw,calc(70vh * 9 / 16));aspect-ratio:9/16}
.share-skel{position:absolute;inset:0;background:var(--c-sediment-black);border-radius:8px;display:flex;flex-direction:column;padding:18% 10% 12%;gap:2px;overflow:hidden}
.share-skel i{flex:1;opacity:.5;animation:skel var(--d-compass) linear infinite}
@keyframes skel{0%,100%{opacity:.25}50%{opacity:.6}}
.share-frame img{position:absolute;inset:0;width:100%;height:100%;border-radius:8px;opacity:0;transition:opacity var(--d-share) ease-out;cursor:pointer}
.share-modal.ready img{opacity:1}.share-modal.ready .share-skel{opacity:0;transition:opacity var(--d-share) ease-out}

.pick-filter{width:100%;margin-top:8px;background:var(--c-sediment-black);border:1px solid var(--c-text-3);border-radius:10px;color:var(--c-text);padding:10px 12px;font:var(--fs-body) var(--f-sans);outline:none}
.pick-filter:focus{border-color:var(--c-text-2)}
.picklist button[hidden]{display:none}
.picklist{max-height:none}

/* 视觉修正（designer） */
.share-modal{z-index:50;isolation:isolate;background:rgba(13,13,18,.97)}
.ruler div{white-space:nowrap}
@media(min-width:768px){.ruler{width:96px}
 .sheet{top:50%;bottom:auto;left:50%;right:auto;width:min(560px,92vw);height:auto;max-height:80vh;border-radius:var(--radius-sheet);margin:0;transform:translate(-50%,-40%);opacity:0;transition:transform var(--d-sheet-out) var(--e-sheet-out),opacity var(--d-sheet-out) var(--e-sheet-out)}
 .sheet.on{transform:translate(-50%,-50%);opacity:1;transition:transform var(--d-sheet-in) var(--e-sheet-in),opacity var(--d-sheet-in) var(--e-sheet-in)}}
@media(max-width:767px){.topbar,.depth{background:rgba(13,13,18,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}}
.sheet:not(.on){pointer-events:none}
@media(min-width:768px){.sheet:not(.on){visibility:hidden;transition-property:transform,opacity,visibility}}
html{scroll-padding-top:96px}

/* ======================= v3 视觉（designer）======================= */
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
body::after{content:'';position:fixed;inset:-50%;z-index:15;pointer-events:none;opacity:var(--grain-opacity);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");animation:grain .6s steps(3) infinite}
@keyframes grain{0%{transform:translate(0,0)}33%{transform:translate(-4%,3%)}66%{transform:translate(3%,-5%)}}
.bg1,.bg2,.bg3{background:var(--c-archive-black)}
.notice{position:relative;z-index:3}
/* ---- S0 hero ---- */
#S0{max-width:none;margin:0;padding:0;position:relative;min-height:100vh;min-height:100svh}
.hero-bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.brand{position:absolute;top:24px;left:clamp(20px,5vw,72px);z-index:2;display:flex;gap:12px;align-items:baseline;font:700 18px var(--f-serif);color:var(--c-gilt-hi)}
.brand i{font-style:normal;font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--c-text-3-a11y)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:clamp(24px,5vw,80px);align-items:center;min-height:100vh;min-height:100svh;padding:110px clamp(20px,7vw,120px) 72px}
.hero-main{max-width:760px}
.kicker{color:var(--c-gilt);font-size:11px;text-transform:uppercase;margin:0 0 24px}
.hero{font:700 var(--fs-hero)/1.02 var(--f-serif);letter-spacing:-.02em;color:var(--c-text);margin:0}
.hero .ln{display:block;overflow:hidden;padding:.04em 0 .1em}
.hero em{font-style:normal;background:linear-gradient(100deg,var(--c-gilt-lo) 0%,var(--c-gilt) 30%,#f6e3b0 48%,var(--c-gilt) 62%,var(--c-gilt-lo) 100%);background-size:250% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:sheen 6s var(--e-cine) infinite}
@keyframes sheen{0%,20%{background-position:100% 0}70%,100%{background-position:0 0}}
#S0 .sub{font-size:clamp(15px,1.3vw,19px);color:var(--c-text-2);margin:24px 0 40px}
.rv{display:block;opacity:0;transform:translateY(24px);transition:transform var(--d-hero) var(--e-cine),opacity 1.1s var(--e-cine)}
.hero .rv{display:inline-block;transform:translateY(105%) rotate(2deg)}
.loaded .rv{opacity:1;transform:none}
.loaded .ln:nth-child(1) .rv{transition-delay:.15s}.loaded .ln:nth-child(2) .rv{transition-delay:.3s}
.loaded .kicker{transition-delay:.05s}.loaded .sub{transition-delay:.5s}.loaded .search{transition-delay:.62s}.loaded .hero-main>.row-btns{transition-delay:.74s}.loaded .hint{transition-delay:.86s}
#S0 .search{position:relative;display:flex;align-items:center;gap:16px;border-bottom:1px solid rgba(201,164,92,.3);max-width:640px}
#S0 .search input{background:none;border:0;border-radius:0;padding:12px 0;font:700 clamp(18px,1.9vw,26px)/1.4 var(--f-serif);color:var(--c-text);caret-color:var(--c-cinnabar-hi)}
#S0 .search input::placeholder{color:var(--c-text-3);font-size:.72em;font-family:var(--f-sans);font-weight:400}
.uline{position:absolute;left:0;bottom:-1px;height:1px;width:100%;background:linear-gradient(90deg,var(--c-cinnabar-hi),var(--c-gilt));transform:scaleX(0);transform-origin:left;transition:transform .9s var(--e-cine);pointer-events:none}
#S0 .search:focus-within .uline{transform:scaleX(1)}
#S0 .search:focus-within{box-shadow:0 22px 40px -32px rgba(201,164,92,.9)}
#S0 .cta{flex:none;background:var(--c-cinnabar);border-radius:999px;padding:10px 26px;font-family:var(--f-serif);font-weight:700;letter-spacing:.1em;transition:background .3s,transform .3s var(--e-tap)}
#S0 .cta:hover{transform:translateY(-2px)}
#S0 .ghost{border-radius:999px;border-color:rgba(201,164,92,.35);color:var(--c-gilt-hi);transition:border-color .3s,background .3s}
#S0 .ghost:hover{border-color:var(--c-gilt);background:rgba(201,164,92,.08)}
#S0 .row-btns{margin-top:22px}
.chips button{border:1px solid #2c2a30!important;background:rgba(22,22,29,.7)!important;transition:border-color .3s,color .3s}.chips button:hover{border-color:var(--c-gilt)!important;color:var(--c-gilt-hi)!important}
#S0 .hint{margin-top:30px}#S0 .hint .textbtn{color:var(--c-text-2);border-bottom:1px solid transparent;padding:2px 0;transition:color .3s,border-color .3s}#S0 .hint .textbtn:hover{color:var(--c-gilt-hi);border-color:var(--c-gilt)}
.core{position:relative;width:clamp(120px,12vw,180px);height:min(70vh,640px);display:flex;flex-direction:column;gap:3px;filter:drop-shadow(0 30px 60px rgba(0,0,0,.7))}
.core::before{content:'地层样本 · 0 → 基岩';position:absolute;top:-30px;left:0;font:500 10px var(--f-mono);letter-spacing:.16em;color:var(--c-gilt);white-space:nowrap}
.core .s{position:relative;flex:1;clip-path:inset(0 0 100% -240px);transition:clip-path 1.1s var(--e-cine);transition-delay:calc(.6s + var(--i) * 90ms)}
.loaded .core .s{clip-path:inset(0 0 0 -240px)}
.core canvas{display:block;width:100%;height:100%;border-radius:3px}
.core .s span{position:absolute;right:calc(100% + 14px);top:50%;transform:translateY(-50%);font-size:10px;color:var(--c-text-3-a11y);white-space:nowrap}
.core .s:first-child span{color:var(--c-gilt-hi)}
@media (max-width:900px){.hero-grid{grid-template-columns:minmax(0,1fr);padding-top:96px}.core{display:none}}
@media (max-width:767px){.hero{font-size:clamp(56px,18vw,84px)}#S0 .search{gap:10px}#S0 .cta{padding:8px 18px}}
/* ---- S1/SE/SP 跟上新风格 ---- */
#S1 .loading-main,#SE .loading-main{font-size:clamp(20px,2vw,26px)}
#SP h2{font-size:clamp(22px,2.4vw,32px)}
.picklist button{border-color:#2a2830;transition:border-color .25s}.picklist button:hover{border-color:var(--c-gilt)}
/* ---- S2 ---- */
.topbar{padding:14px clamp(16px,4vw,48px);background:rgba(13,13,18,.82);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid rgba(201,164,92,.14);font:700 15px var(--f-serif);color:var(--c-gilt-hi)}
.depth{top:52px;padding:6px clamp(16px,4vw,48px);background:rgba(13,13,18,.82);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);color:var(--c-text-2)}
.depth .bar{height:2px;background:#25232a}.depth i{height:2px;background:linear-gradient(90deg,var(--c-gilt-hi),var(--c-gilt),var(--c-cinnabar-hi))}
html{scroll-padding-top:110px}
.s2body{max-width:1280px;gap:clamp(12px,3vw,40px);padding:0 clamp(0px,2vw,24px)}
main{padding:24px 16px}
.rail{display:none}
@media(min-width:768px){
 .rail{display:block;position:sticky;top:120px;align-self:flex-start;width:150px;flex:none;padding-top:8px}
 .rail .ruler{display:block;position:static;width:auto;padding:0 0 0 16px;max-height:calc(100vh - 260px);overflow:hidden}
 .gtrack{position:absolute;left:0;top:64px;bottom:0;width:2px;background:#25232a;border-radius:2px}
 .gtrack i{position:absolute;inset:0;background:linear-gradient(var(--c-gilt-hi),var(--c-gilt),var(--c-cinnabar-hi));transform-origin:top;transform:scaleY(var(--depth));box-shadow:0 0 12px rgba(201,164,92,.6)}
 .ruler div{border:0!important;padding:3px 0;transition:color .3s,transform .4s var(--e-cine)}.ruler div.on{color:var(--c-gilt-hi);transform:translateX(6px)}
}
.odo{display:flex;align-items:baseline;height:1.15em;overflow:hidden;font-size:clamp(24px,2.2vw,32px);letter-spacing:0;color:var(--c-gilt-hi);margin-bottom:22px;line-height:1.15}
.odo .d{display:flex;flex-direction:column;transition:transform .9s var(--e-cine)}.odo .d b{font-weight:500;height:1.15em;line-height:1.15em}
.odo .sg{padding-right:2px}.odo small{font-size:11px;color:var(--c-text-3-a11y);margin-left:6px;font-family:var(--f-sans)}
@media(max-width:767px){.rail{display:block;position:fixed;left:12px;bottom:calc(14px + env(safe-area-inset-bottom));z-index:6;width:auto;padding:6px 12px;border-radius:999px;background:rgba(13,13,18,.85);border:1px solid rgba(201,164,92,.3);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
 .rail .gtrack,.rail .ruler{display:none}.odo{font-size:16px;margin:0}}
body[data-state=S3] .rail{z-index:4}
/* here 卡 */
.here{background:none;border:0;padding:clamp(24px,6vh,72px) 0 28px}
.here .crumb{font-size:11px;color:var(--c-text-3-a11y);text-transform:none}
.here h2{font-size:var(--fs-town-xl);line-height:1.05;margin:16px 0 18px;letter-spacing:-.01em}
.here>div:not(.crumb):not(.src){color:var(--c-text-2)}
.here::after{content:'脚下千年 · 由近及远';display:block;margin-top:28px;font:700 var(--fs-quote)/1.3 var(--f-serif);color:var(--c-gilt);border-left:2px solid var(--c-cinnabar-hi);padding-left:20px}
.modern{background:linear-gradient(135deg,rgba(201,164,92,.07),rgba(22,22,29,.6));border:1px solid rgba(201,164,92,.22);border-radius:4px!important;padding:clamp(20px,3vw,36px)}
.modern h3,.landmark h3{font-size:clamp(18px,1.6vw,22px);color:var(--c-gilt-hi)}
.became{font-size:1.15em}
.banner{border-radius:4px}
/* 地层 */
#strata{display:flex;flex-direction:column;gap:3px;margin-top:24px}
.layer{min-height:var(--layer-h);display:flex;align-items:center;padding:clamp(32px,6vh,64px) clamp(20px,4vw,56px);overflow:hidden;border-radius:2px;isolation:isolate}
.band{position:absolute;inset:0;z-index:-1;overflow:hidden;clip-path:inset(0 var(--wipe,100%) 0 0);background:#1a1920}
.band canvas{position:absolute;left:0;top:-15%;width:100%;height:130%;transform:translate3d(0,calc(var(--par,0) * -60px),0);opacity:0;transition:opacity .6s}
.layer.drawn .band canvas{opacity:1}
.band::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,13,18,.93) 0%,rgba(13,13,18,.72) 45%,rgba(13,13,18,.18) 100%),linear-gradient(0deg,rgba(13,13,18,.5),transparent 30%)}
.band::before{content:'';position:absolute;left:0;right:0;top:0;height:1px;background:rgba(232,207,150,.25);z-index:1}
.lyr{position:absolute;right:3%;bottom:-.14em;z-index:-1;font:700 var(--fs-year-ghost)/1 var(--f-serif);color:transparent;-webkit-text-stroke:1px rgba(232,207,150,.42);transform:translate3d(0,calc(var(--par,0) * 110px),0);pointer-events:none;white-space:nowrap}
.lbody{position:relative;max-width:min(36em,78%);transform:translate3d(0,calc(var(--par,0) * -28px),0)}
.ltag{font-size:12px;color:var(--c-layer-tag);text-transform:none;display:flex;gap:12px;align-items:center}
.lno{color:var(--c-gilt);border:1px solid rgba(201,164,92,.4);border-radius:999px;padding:1px 8px;font-size:10px}
.ltitle{font:700 var(--fs-layer-xl)/1.15 var(--f-serif);margin:14px 0 14px;color:var(--c-text);text-shadow:0 2px 24px rgba(0,0,0,.5)}
.layer-intro{max-width:var(--intro-w);color:var(--c-text-2);font:400 clamp(15px,1.15vw,17px)/1.85 var(--f-serif);margin:0 0 12px;padding-left:14px;border-left:2px solid rgba(201,164,92,.55);text-shadow:0 1px 12px rgba(0,0,0,.6)}
.lsum{max-width:36em;color:var(--c-text);opacity:.86;margin:0;font-size:clamp(14px,1.05vw,16px);line-height:1.85;text-shadow:0 1px 12px rgba(0,0,0,.6)}
.lmore{display:inline-flex;gap:10px;align-items:center;margin-top:20px;font-size:11px;color:var(--c-gilt)}.lmore::before{content:'';width:28px;height:1px;background:var(--c-gilt);transition:width .5s var(--e-cine)}
.layer:hover .lmore::before,.layer:focus-visible .lmore::before{width:60px}
.layer>.layer-intro{display:none} /* app.js 旧追加位置，已在 .lbody 内渲染 */
.layer .lv{z-index:2}
.layer.settled.tap{transform:scale(.99)}
.k-l0 .lyr{font-size:clamp(64px,9vw,140px)}
@media(max-width:767px){.layer{padding:44px 20px 72px}.lbody{max-width:100%}.lyr{font-size:88px;right:12px}.band::after{background:linear-gradient(90deg,rgba(13,13,18,.9),rgba(13,13,18,.6))}}
.end{padding:72px 0 120px}.end p{font:700 clamp(20px,2vw,28px) var(--f-serif);color:var(--c-text-2)}
.end .cta{border-radius:999px;padding:12px 28px}
/* 详情卡 */
.sheet{background:#131218;border:1px solid rgba(201,164,92,.3);padding:20px clamp(22px,4vw,48px) 44px}
.sheet h2{font-size:clamp(28px,3.4vw,44px);line-height:1.15;color:var(--c-gilt-hi);margin:18px 0 8px}
.sheet .st{color:var(--c-layer-tag)}
.sheet p{color:var(--c-text);line-height:1.9}
.sheet .layer-intro{margin:18px 0 6px;font-size:17px;color:var(--c-text-2)}
.x{width:40px;height:40px;border-radius:50%;border:1px solid rgba(201,164,92,.4)!important;color:var(--c-gilt-hi);top:14px;right:14px;line-height:1}
.mask.on{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.attribution{border-top:1px solid #1e1d23}
@media (prefers-reduced-motion:reduce){body::after,.hero em{animation:none}.rv,.core .s{opacity:1;transform:none;clip-path:none;transition:none}.band{clip-path:none}.band canvas,.lyr,.lbody{transform:none}.odo .d{transition:none}}
#S0 .search input{flex:1;min-width:0;width:100%}.hero-main{min-width:0}
/* ---- QA fe20da9：对比度 AA + 移动端性能 ---- */
.textbtn.red{color:var(--c-cinnabar-hi)}
.unv{opacity:1;color:var(--c-text-3-a11y);border-color:var(--c-text-3-a11y)}
.inline-err{color:var(--c-cinnabar-hi)}
.band,.lyr,.lbody,.band canvas{will-change:auto}
@media (pointer:coarse),(max-width:767px){
 body::after{animation:none;inset:0}
 .topbar,.depth,.rail,.mask.on{-webkit-backdrop-filter:none!important;backdrop-filter:none!important}
 .topbar,.depth{background:rgba(13,13,18,.97)!important}.rail{background:rgba(13,13,18,.95)}
 .band canvas,.lyr,.lbody{transform:none!important}
 .hero em{animation:none;background-position:30% 0}
}
.tex-asphalt .band::after{background:linear-gradient(90deg,rgba(13,13,18,.86) 0%,rgba(13,13,18,.6) 45%,rgba(13,13,18,.05) 100%),linear-gradient(0deg,rgba(13,13,18,.4),transparent 30%)}
.cta,#S0 .cta{background:#b13a25}.cta:hover,.cta:focus-visible,#S0 .cta:hover{background:#a02f1c}
@media (pointer:coarse),(max-width:767px){.rv,.hero .rv{opacity:1;transform:none;transition:none}}

/* 选项入口 .picker：区列表 → 区内列表（designer） */
.picker{width:100%;max-width:680px;margin:24px 0 0}
.picker-tabs{display:flex;flex-wrap:wrap;gap:6px;padding:0 0 12px;border-bottom:1px solid color-mix(in srgb,var(--c-gold) 22%,transparent)}
.picker-tab{font:500 var(--fs-tag)/1 var(--f-sans);letter-spacing:.04em;color:var(--c-text-2);background:none;border:1px solid color-mix(in srgb,var(--c-text) 12%,transparent);border-radius:999px;padding:9px 14px;min-height:40px;cursor:pointer;transition:color var(--d-tap) ease-out,border-color var(--d-tap) ease-out,background var(--d-tap) ease-out}
.picker-tab:hover{color:var(--c-text);border-color:color-mix(in srgb,var(--c-gold) 40%,transparent)}
.picker-tab[aria-selected="true"]{color:var(--c-gold);border-color:color-mix(in srgb,var(--c-gold) 60%,transparent);background:color-mix(in srgb,var(--c-gold) 10%,transparent)}
.picker-tab:focus-visible,.picker-item:focus-visible{outline:2px solid var(--c-gold);outline-offset:2px}
.picker-group{margin:16px 0 0}
.picker-group-title{font:500 var(--fs-src)/1.2 var(--f-mono);letter-spacing:.14em;color:var(--c-gold);margin:0 0 8px;display:flex;align-items:center;gap:10px}
.picker-group-title::after{content:"";flex:1;height:1px;background:color-mix(in srgb,var(--c-gold) 20%,transparent)}
.picker-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:8px}
.picker-item{display:flex;flex-direction:column;gap:4px;width:100%;text-align:left;cursor:pointer;color:var(--c-text);font:600 1rem/1.3 var(--f-serif);background:color-mix(in srgb,var(--c-sediment-black) 85%,transparent);border:1px solid color-mix(in srgb,var(--c-text) 10%,transparent);border-left:2px solid color-mix(in srgb,var(--c-gold) 45%,transparent);border-radius:4px;padding:12px 14px;min-height:56px;transition:transform var(--d-tap) var(--e-tap),border-color var(--d-tap) ease-out,background var(--d-tap) ease-out}
.picker-item:hover{border-color:color-mix(in srgb,var(--c-gold) 60%,transparent);background:color-mix(in srgb,var(--c-gold) 7%,var(--c-sediment-black))}
.picker-item:active{transform:scale(.98)}
.picker-item-town{font:400 var(--fs-src)/1.3 var(--f-sans);color:var(--c-text-3-a11y)}
@media(max-width:767px){.picker{margin-top:18px}.picker-tabs{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -20px;padding:0 20px 12px;-webkit-mask:linear-gradient(90deg,transparent,#000 20px,#000 88%,transparent)}.picker-tabs::-webkit-scrollbar{display:none}.picker-tab{flex:none}.picker-list{grid-template-columns:1fr 1fr}.picker-item{padding:11px 12px;font-size:.95rem}}
@media(prefers-reduced-motion:reduce){.picker-tab,.picker-item{transition:none}}
/* picker: markup = .picker-list > .picker-group > ul > li > .picker-item */
.picker-list{display:block}
.picker-group{margin-top:20px}
.picker-group ul{list-style:none;margin:10px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.picker-group li{margin:0;padding:0}
.picker-group li::marker{content:none}
.picker-item{width:100%;height:100%;display:flex;flex-direction:column;align-items:flex-start;text-align:left}
.picker-item-name{font-family:var(--f-serif,"Noto Serif SC",serif);color:var(--c-text);font-size:1rem;line-height:1.3}
@media (max-width:600px){.picker-group ul{grid-template-columns:1fr 1fr;gap:8px}}