/* 玄奘西行记 · 低多边形岛屿视觉系统
   粉彩、低对比、少色相；没有黑色，暗处只来自阴影。
   按钮像地块：顶面 + 侧面，按下即“沉入”。光线（昼/暮/夜）同时改变 3D 舞台与界面。 */
:root{
 --sky-top:#bcd8e5;--sky-bottom:#eef3ec;--sea:#2f8cb6;--sea-deep:#2775a3;--shallow:#86d4cc;--foam:#eff8f1;
 --sand:#efd6a0;--sand-side:#dcc08a;--grass:#8fc46c;--grass-side:#8b6a4a;--rock:#b6b4ad;
 --coral:#e0664a;--coral-side:#b94c36;--teal:#2b8c8c;--teal-side:#1d6a6b;--ochre:#e4b24c;--ochre-side:#b98a2c;--plum:#7f66aa;
 --ink:#22405a;--ink-soft:#4b677d;--muted:#768c9c;--line:rgba(34,64,90,.12);
 --card:rgba(255,255,255,.74);--card-solid:#fbfaf6;--card-edge:rgba(255,255,255,.92);--tile-top:#ffffff;--tile-side:#d3dce1;
 --shadow:0 26px 50px -30px rgba(34,64,90,.5);--shadow-sm:0 12px 26px -20px rgba(34,64,90,.55);
 --r:24px;--r-sm:15px;--gap:clamp(16px,2.4vw,28px);
 --font:"PingFang SC","HarmonyOS Sans SC","MiSans","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
 --spring:cubic-bezier(.34,1.56,.64,1);
 color-scheme:light;
}
html[data-time=dusk]{--sky-top:#a9b3da;--sky-bottom:#f7d4b2;--sea:#3a76a4;--shallow:#88c3c1;--foam:#f7e6d6;--card:rgba(255,250,246,.72);--tile-side:#dccbc4}
html[data-time=night]{--sky-top:#141c3c;--sky-bottom:#3d4479;--sea:#1d3b69;--shallow:#2f6d8e;--foam:#8db2cb;
 --ink:#eef1ff;--ink-soft:#c3c9ea;--muted:#9aa3cf;--line:rgba(220,226,255,.14);--card:rgba(32,38,78,.72);--card-solid:#262d5a;--card-edge:rgba(160,170,230,.22);
 --tile-top:#343d78;--tile-side:#1c2250;--shadow:0 26px 50px -30px rgba(5,8,30,.8);--shadow-sm:0 12px 26px -20px rgba(5,8,30,.9);color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;font-family:var(--font);color:var(--ink);line-height:1.7;letter-spacing:.01em;
 background:linear-gradient(180deg,var(--sky-top) 0%,var(--sky-bottom) 62%,var(--sky-bottom) 100%) fixed;background-color:var(--sky-bottom);transition:color .6s}
html[data-time=night] body{background-image:radial-gradient(1.2px 1.2px at 12% 18%,#fff8 50%,transparent),radial-gradient(1px 1px at 72% 9%,#fff7 50%,transparent),radial-gradient(1.4px 1.4px at 36% 6%,#fffa 50%,transparent),radial-gradient(1px 1px at 88% 28%,#fff6 50%,transparent),linear-gradient(180deg,var(--sky-top),var(--sky-bottom) 70%)}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid var(--ochre);outline-offset:3px;border-radius:10px}
img,svg{display:block;max-width:100%}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:16px;top:-60px;z-index:40;padding:10px 16px;border-radius:12px;background:var(--card-solid);box-shadow:var(--shadow-sm)}
.skip:focus{top:12px}
.noscript{max-width:640px;margin:40px auto;padding:20px;background:var(--card-solid);border-radius:var(--r)}

/* ---------- 地块按钮 ---------- */
.btn{--top:var(--coral);--side:var(--coral-side);--fg:#fff;display:inline-flex;align-items:center;justify-content:center;gap:.5em;min-height:46px;padding:10px 20px 10px;border:0;border-radius:16px;
 background:var(--top);color:var(--fg);font-weight:600;letter-spacing:.06em;text-decoration:none;box-shadow:0 5px 0 var(--side),0 14px 22px -14px rgba(34,64,90,.6);
 transform:translateY(0);transition:transform .22s var(--spring),box-shadow .22s var(--spring),filter .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 7px 0 var(--side),0 18px 26px -16px rgba(34,64,90,.6)}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--side),0 6px 12px -10px rgba(34,64,90,.6)}
.btn:disabled{filter:grayscale(.7) opacity(.55);cursor:not-allowed;transform:none}
.btn.teal{--top:var(--teal);--side:var(--teal-side)}
.btn.ochre{--top:var(--ochre);--side:var(--ochre-side);--fg:#3b2a10}
.btn.ghost{--top:var(--tile-top);--side:var(--tile-side);--fg:var(--ink)}
.btn.small{min-height:38px;padding:6px 14px;font-size:.92rem;border-radius:13px}
.tile-icon{display:inline-grid;place-items:center;width:44px;height:44px;border:0;border-radius:14px;background:var(--tile-top);color:var(--ink);font-weight:700;
 box-shadow:0 4px 0 var(--tile-side),0 10px 18px -14px rgba(34,64,90,.6);transition:transform .2s var(--spring),box-shadow .2s var(--spring)}
.tile-icon:hover{transform:translateY(-2px);box-shadow:0 6px 0 var(--tile-side),0 14px 20px -14px rgba(34,64,90,.6)}
.tile-icon:active,.tile-icon[aria-pressed=true]{transform:translateY(3px);box-shadow:0 1px 0 var(--tile-side)}
.tile-icon[aria-pressed=true]{background:var(--teal);color:#fff;--tile-side:var(--teal-side)}
.tile-select{min-height:44px;padding:8px 34px 8px 14px;border:0;border-radius:14px;background:var(--tile-top);box-shadow:0 4px 0 var(--tile-side);appearance:none;-webkit-appearance:none;
 background-image:linear-gradient(45deg,transparent 50%,currentColor 50%),linear-gradient(135deg,currentColor 50%,transparent 50%);background-position:calc(100% - 17px) 52%,calc(100% - 12px) 52%;background-size:5px 5px;background-repeat:no-repeat}
.segmented{display:inline-flex;gap:6px;padding:6px;border-radius:18px;background:rgba(255,255,255,.38);border:1px solid var(--card-edge)}
html[data-time=night] .segmented{background:rgba(20,26,60,.45)}
.segmented button{min-height:40px;padding:6px 14px;border:0;border-radius:12px;background:transparent;color:var(--ink-soft);font-weight:600;transition:transform .2s var(--spring),background .2s,box-shadow .2s}
.segmented button[aria-pressed=true]{background:var(--tile-top);color:var(--ink);box-shadow:0 3px 0 var(--tile-side)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 11px;border-radius:999px;background:rgba(43,140,140,.12);color:var(--teal);font-size:.8rem;font-weight:600;letter-spacing:.04em;white-space:nowrap}
html[data-time=night] .badge{color:#8fe0dc;background:rgba(143,224,220,.12)}
.badge.warm{background:rgba(224,102,74,.13);color:var(--coral)}
.badge.gold{background:rgba(228,178,76,.2);color:#9a6c12}
html[data-time=night] .badge.gold{color:#f2cf86}
.card{background:var(--card);border:1px solid var(--card-edge);border-radius:var(--r);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px) saturate(1.2);backdrop-filter:blur(16px) saturate(1.2)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--teal);font-size:.86rem;font-weight:700;letter-spacing:.24em}
html[data-time=night] .eyebrow{color:#8fe0dc}
.eyebrow::before{content:"";width:12px;height:14px;background:currentColor;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.kicker{color:var(--muted);font-size:.82rem;font-weight:600;letter-spacing:.14em}
.text-link{color:var(--teal);font-weight:600;text-decoration:none;border-bottom:2px solid currentColor;padding-bottom:2px}
html[data-time=night] .text-link{color:#8fe0dc}

/* ---------- 标题像地块一样从水线下升起 ---------- */
.rise{display:block;overflow:hidden;padding:.08em 0 .14em;margin:-.08em 0 -.14em;position:relative}
.rise .ch{display:inline-block;transform:translateY(115%);animation:rise .95s var(--spring) forwards;animation-delay:calc(var(--i)*42ms + 80ms)}
.rise .ch.sp{width:.3em}
@keyframes rise{0%{transform:translateY(115%)}62%{transform:translateY(-7%)}100%{transform:translateY(0)}}
@keyframes pop{0%{transform:scale(.2)}55%{transform:scale(1.18)}78%{transform:scale(.95)}100%{transform:scale(1)}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}

/* ---------- 顶栏 ---------- */
.header{position:sticky;top:10px;z-index:20;display:flex;align-items:center;gap:18px;width:min(1320px,calc(100% - 24px));margin:10px auto 0;padding:10px 12px 10px 16px;
 background:var(--card);border:1px solid var(--card-edge);border-radius:22px;box-shadow:var(--shadow-sm);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand-mark{width:44px;height:44px;display:grid;place-items:center}
.brand-mark svg{width:44px;height:44px}
.brand-copy{display:grid;line-height:1.25}
.brand-copy b{font-size:1.14rem;letter-spacing:.2em}
.brand-copy small{color:var(--muted);font-size:.72rem;letter-spacing:.18em}
.nav{display:flex;gap:4px;margin:0 auto}
.nav a{display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:13px;text-decoration:none;color:var(--ink-soft);font-weight:600;font-size:.93rem;transition:transform .2s var(--spring),background .2s,box-shadow .2s}
.nav a span{width:22px;height:22px;display:grid;place-items:center}
.nav a span svg{width:22px;height:22px}
.nav a:hover{background:rgba(255,255,255,.45)}
.nav a[aria-current=page]{background:var(--tile-top);color:var(--ink);box-shadow:0 3px 0 var(--tile-side)}
.prefs{display:flex;gap:8px;align-items:center;flex:none}
.prefs #time span{font-size:.95rem}
main{display:block;width:min(1280px,calc(100% - 32px));margin:0 auto;padding:var(--gap) 0 56px;outline:none}
.footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;width:min(1280px,calc(100% - 32px));margin:0 auto 26px;padding:18px 4px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.84rem}
.footer i{font-style:normal;color:var(--coral)}

/* ---------- 页标题 ---------- */
.page-heading{max-width:860px;margin:clamp(8px,2vw,24px) 0 var(--gap)}
.page-heading h1{margin:.3em 0 .2em;font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.18;letter-spacing:.1em;font-weight:700}
.page-heading p{margin:0;color:var(--ink-soft);font-size:1.02rem;max-width:62ch}

/* ---------- 舞台（3D 或 SVG 降级） ---------- */
.stage{--sky-top:#c4dde8;--sky-bottom:#eef4ef;position:relative;overflow:hidden;border-radius:30px;isolation:isolate;
 background:radial-gradient(120% 90% at 50% 105%,rgba(255,255,255,.45),transparent 60%),linear-gradient(180deg,var(--sky-top),var(--sky-bottom));transition:background .9s}
.stage[data-time=dusk]{--sky-top:#9eabd8;--sky-bottom:#f8cfa8}
.stage[data-time=night]{--sky-top:#121a3a;--sky-bottom:#363e74}
.stage[data-time=night]::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.85;
 background-image:radial-gradient(1.4px 1.4px at 14% 12%,#fff 50%,transparent),radial-gradient(1px 1px at 33% 22%,#fff 50%,transparent),radial-gradient(1.2px 1.2px at 58% 8%,#fff 50%,transparent),radial-gradient(1px 1px at 78% 18%,#fff 50%,transparent),radial-gradient(1.5px 1.5px at 90% 6%,#fff 50%,transparent),radial-gradient(1px 1px at 46% 30%,#fff9 50%,transparent)}
.stage-fallback{position:absolute;inset:0;display:grid;place-items:center;z-index:1;background:radial-gradient(70% 62% at 50% 56%,#3d9fc4,var(--sea) 62%,transparent 100%);transition:opacity .7s}
.stage-fallback svg{width:100%;height:100%}
.stage-canvas{position:absolute;inset:0;width:100%!important;height:100%!important;z-index:2;opacity:0;transition:opacity .8s;cursor:grab}
.stage.is-live .stage-canvas{opacity:1}
.stage.is-live .stage-fallback{opacity:0}
.stage.is-dragging .stage-canvas{cursor:grabbing}
.stage-labels{position:absolute;inset:0;z-index:3;pointer-events:none}
.stage-chip{position:absolute;z-index:4;left:16px;bottom:16px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;max-width:calc(100% - 32px);pointer-events:none}
.stage-chip .badge{background:rgba(255,255,255,.78);color:var(--ink-soft);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.stage[data-time=night] .stage-chip .badge{background:rgba(30,36,76,.78);color:#dfe3ff}
.stage-tools{position:absolute;z-index:4;right:14px;top:14px;display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
.stage-tools .tile-icon{width:40px;height:40px;font-size:1.05rem}
.stage-hint{position:absolute;z-index:4;right:16px;bottom:16px;color:#fff;font-size:.78rem;letter-spacing:.08em;text-shadow:0 2px 10px rgba(20,40,80,.55);pointer-events:none}

/* ---------- 首页 ---------- */
.hero{position:relative;min-height:min(78vh,760px);margin-top:4px}
.hero .stage{position:absolute;inset:0}
.hero-card{position:absolute;z-index:5;left:clamp(14px,2.4vw,30px);top:50%;transform:translateY(-50%);width:min(470px,calc(100% - 28px));padding:clamp(22px,3vw,34px)}
.hero-card h1{margin:.5em 0 .35em;font-size:clamp(2.3rem,5.2vw,4.1rem);line-height:1.12;letter-spacing:.08em}
.hero-card .intro{margin:0 0 22px;color:var(--ink-soft);font-size:1.03rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-proof{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.mini-discover{margin-top:20px;padding:14px;border-radius:18px;background:rgba(255,255,255,.5)}
html[data-time=night] .mini-discover{background:rgba(255,255,255,.06)}
.mini-discover p{margin:0 0 10px;font-weight:600}
.mini-discover div{display:flex;gap:10px;flex-wrap:wrap}
.section-top{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px 24px;margin:clamp(36px,6vw,64px) 0 18px}
.section-top h2{margin:.25em 0 .15em;font-size:clamp(1.5rem,3vw,2.3rem);letter-spacing:.1em}
.section-top p{margin:0;color:var(--ink-soft)}
.archipelago{display:grid;grid-template-columns:repeat(7,minmax(150px,1fr));gap:14px;overflow-x:auto;padding:6px 4px 22px;scroll-snap-type:x mandatory;scrollbar-width:thin}
.isle{scroll-snap-align:start;display:grid;align-content:start;padding:0;border:0;border-radius:22px;overflow:hidden;text-align:left;background:var(--card);box-shadow:var(--shadow-sm);border:1px solid var(--card-edge);
 transition:transform .3s var(--spring),box-shadow .3s}
.isle:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.isle[aria-pressed=true]{box-shadow:0 0 0 3px var(--teal),var(--shadow)}
.isle-art{aspect-ratio:1/.82;background:radial-gradient(70% 70% at 50% 55%,#3fa3c8,var(--sea) 70%,var(--sea-deep));display:grid;place-items:center;overflow:hidden}
.isle-art svg{width:112%;height:112%;transition:transform .5s var(--spring)}
.isle:hover .isle-art svg{transform:translateY(-4px) scale(1.04)}
.isle-copy{padding:12px 14px 16px}
.isle-copy span{color:var(--muted);font-size:.75rem;letter-spacing:.12em;font-weight:600}
.isle-copy h3{margin:2px 0 2px;font-size:1.08rem;letter-spacing:.1em}
.isle-copy p{margin:0;color:var(--ink-soft);font-size:.82rem;line-height:1.5}
.chapter-panel{display:grid;grid-template-columns:auto 1fr auto;gap:18px 26px;align-items:center;padding:clamp(18px,2.6vw,28px);margin-top:4px}
.chapter-panel .no{width:64px;height:72px;display:grid;place-items:center;background:var(--coral);color:#fff;font-size:1.6rem;font-weight:700;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.chapter-panel h3{margin:0;font-size:1.3rem;letter-spacing:.12em}
.chapter-panel p{margin:.3em 0 0;color:var(--ink-soft)}
.chapter-panel .actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:clamp(32px,5vw,56px)}
.entry{display:grid;grid-template-columns:76px 1fr;gap:14px;align-items:center;padding:18px;text-decoration:none;transition:transform .3s var(--spring)}
.entry:hover{transform:translateY(-4px)}
.entry .ico{width:76px;height:76px;display:grid;place-items:center;border-radius:20px;background:radial-gradient(circle at 50% 60%,rgba(127,212,204,.55),transparent 70%)}
.entry .ico svg{width:62px;height:62px}
.entry strong{display:block;font-size:1.05rem;letter-spacing:.08em}
.entry small{color:var(--ink-soft);font-size:.86rem}

/* ---------- 地图 ---------- */
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:16px}
.toolbar .grow{flex:1}
.search{min-height:46px;width:min(300px,100%);padding:10px 16px;border:0;border-radius:15px;background:var(--tile-top);box-shadow:inset 0 2px 0 rgba(34,64,90,.06),0 4px 0 var(--tile-side)}
.search::placeholder{color:var(--muted)}
.route-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:18px;align-items:start}
.map-stage{height:min(72vh,680px);min-height:440px}
.map-stage:focus-visible{outline-offset:4px}
.map-legend{position:absolute;z-index:4;left:14px;top:14px;display:flex;flex-direction:column;gap:6px;padding:10px 12px;border-radius:16px;background:rgba(255,255,255,.78);font-size:.78rem;color:var(--ink-soft);
 -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);max-width:min(260px,60%)}
.stage[data-time=night] .map-legend{background:rgba(30,36,76,.8);color:#dfe3ff}
.map-legend i{display:inline-block;width:12px;height:12px;margin-right:6px;vertical-align:-1px;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.map-label{position:absolute;left:0;top:0;display:flex;flex-direction:column;align-items:center;gap:2px;padding:0;border:0;background:none;pointer-events:auto;transform-origin:50% 100%;translate:-50% -100%;white-space:nowrap}
.map-label .tag{padding:2px 9px;border-radius:9px;background:rgba(255,255,255,.9);color:var(--ink);font-size:.76rem;font-weight:600;letter-spacing:.06em;box-shadow:0 3px 0 rgba(34,64,90,.12);transition:transform .25s var(--spring)}
.map-label .pin{width:9px;height:10px;background:var(--teal);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.map-label[data-leg=return] .pin{background:var(--coral)}
.map-label.visited .tag::after{content:" ✓";color:var(--teal)}
.map-label:hover .tag,.map-label:focus-visible .tag,.map-label.is-selected .tag{transform:scale(1.14);background:var(--ochre);color:#3b2a10}
.map-label.is-tucked .tag{display:none}
.map-label.is-dim{opacity:.35}
.map-label.is-off{visibility:hidden}
.region-label{position:absolute;left:0;top:0;translate:-50% -50%;color:rgba(34,64,90,.62);font-size:.82rem;font-weight:700;letter-spacing:.42em;text-shadow:0 1px 0 rgba(255,255,255,.7);pointer-events:none;white-space:nowrap}
.stage[data-time=night] .region-label{color:rgba(230,234,255,.72);text-shadow:none}
.region-label.is-tucked{opacity:0}
.stop-list{display:grid;gap:10px;max-height:min(72vh,680px);overflow:auto;padding:2px 6px 8px 2px;scrollbar-width:thin}
.stop-item{display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center;width:100%;padding:10px 12px;border:1px solid var(--card-edge);border-radius:18px;background:var(--card);text-align:left;box-shadow:var(--shadow-sm);transition:transform .25s var(--spring)}
.stop-item:hover,.stop-item:focus-visible{transform:translateX(4px)}
.stop-item .n{width:40px;height:44px;display:grid;place-items:center;background:var(--teal);color:#fff;font-weight:700;font-size:.86rem;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.stop-item[data-leg=return] .n{background:var(--coral)}
.stop-item b{display:block;letter-spacing:.08em}
.stop-item small{color:var(--muted)}
.stop-item .badge{font-size:.7rem}
.route-unlocated{margin-top:14px;padding:14px 16px}
.route-unlocated summary{cursor:pointer;font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.route-footer{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:16px;color:var(--ink-soft);font-size:.86rem}
.empty{padding:18px;color:var(--muted);text-align:center}

/* ---------- 弹窗 ---------- */
dialog{width:min(1000px,calc(100% - 24px));max-height:calc(100dvh - 24px);padding:0;border:0;border-radius:30px;background:var(--card-solid);color:var(--ink);box-shadow:0 40px 90px -30px rgba(20,40,70,.6);overflow:auto}
dialog::backdrop{background:rgba(30,60,90,.38);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}
dialog[open]{animation:dialog-in .5s var(--spring)}
@keyframes dialog-in{from{opacity:0;transform:translateY(26px) scale(.97)}}
.dialog-close{position:absolute;right:14px;top:14px;z-index:5;font-size:1.4rem}
.detail{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr)}
.detail-art{position:relative;min-height:340px;background:radial-gradient(70% 62% at 50% 55%,#3fa3c8,var(--sea) 70%,var(--sea-deep));display:grid;place-items:center;padding:20px 10px 70px}
.detail-art svg{width:100%;max-height:380px}
.detail-art .segmented{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);background:rgba(255,255,255,.6);white-space:nowrap}
.detail-art .art-note{position:absolute;left:16px;top:16px;max-width:70%}
.detail-art .art-note .badge{background:rgba(255,255,255,.85);color:var(--ink-soft)}
.detail-content{padding:clamp(22px,3vw,36px)}
.detail-content h2{margin:.3em 0 .1em;font-size:clamp(1.6rem,3vw,2.2rem);letter-spacing:.12em}
.detail-sub{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--ink-soft);margin-bottom:14px}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.fact{padding:12px 14px;border-radius:16px;background:rgba(127,212,204,.13)}
.fact h4{margin:0 0 4px;font-size:.86rem;color:var(--teal);letter-spacing:.1em}
html[data-time=night] .fact h4{color:#8fe0dc}
.fact p{margin:0;font-size:.92rem}
.quote{margin:16px 0;padding:14px 18px;border-left:5px solid var(--ochre);border-radius:4px 16px 16px 4px;background:rgba(228,178,76,.12);font-size:1.15rem;letter-spacing:.12em}
.quote small{display:block;margin-top:6px;color:var(--muted);font-size:.8rem;letter-spacing:.02em}
.note{margin:14px 0;padding:12px 16px;border-radius:16px;background:rgba(34,64,90,.06);color:var(--ink-soft);font-size:.9rem}
.note.warning{background:rgba(224,102,74,.1)}
.note summary{cursor:pointer;font-weight:600;color:var(--ink)}
.source-locator{margin:12px 0;font-size:.82rem;color:var(--muted)}
.source-links{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.source-links a{padding:4px 12px;border-radius:999px;background:var(--tile-top);box-shadow:0 2px 0 var(--tile-side);font-size:.82rem;text-decoration:none;color:var(--ink-soft)}
.detail-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}

/* ---------- 闯关 ---------- */
.passport{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:18px 24px;margin-bottom:22px}
.passport h3{margin:2px 0 0;letter-spacing:.1em}
.stamps{display:flex;flex-wrap:wrap;gap:8px}
.stamp{width:46px;height:52px;display:grid;place-items:center;background:rgba(34,64,90,.12);color:var(--muted);font-weight:700;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.stamp.earned{background:var(--coral);color:#fff;animation:pop .7s var(--spring) both;animation-delay:calc(var(--i)*70ms)}
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.game-card{display:grid;padding:0;border:1px solid var(--card-edge);border-radius:24px;overflow:hidden;text-align:left;background:var(--card);box-shadow:var(--shadow-sm);transition:transform .3s var(--spring),box-shadow .3s}
.game-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.game-cover{position:relative;aspect-ratio:16/10;background:radial-gradient(70% 70% at 50% 55%,#3fa3c8,var(--sea) 70%,var(--sea-deep));display:grid;place-items:center;overflow:hidden}
.game-cover svg{width:100%;height:115%}
.game-cover .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.9);color:var(--ink-soft)}
.game-cover .badge.done{background:var(--teal);color:#fff}
.game-card .copy{padding:14px 18px 18px;align-self:start}
.game-card h3{margin:2px 0 4px;letter-spacing:.1em}
.game-card p{margin:0;color:var(--ink-soft);font-size:.9rem}
.game-body{padding:clamp(22px,3vw,36px)}
.game-head{display:grid;grid-template-columns:120px 1fr;gap:18px;align-items:center;margin-bottom:8px}
.game-head .art{width:120px;height:104px;border-radius:20px;background:radial-gradient(70% 70% at 50% 55%,#3fa3c8,var(--sea) 70%);display:grid;place-items:center;overflow:hidden}
.game-head .art svg{width:130%;height:130%}
.game-head h2{margin:.2em 0 0;letter-spacing:.12em}
.game-prompt{font-size:1.08rem;font-weight:600;margin:12px 0 4px}
.hint{color:var(--muted);font-size:.86rem}
.game-options{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin:18px 0}
.option{position:relative;display:grid;justify-items:center;gap:6px;padding:14px 10px 12px;border:0;border-radius:18px;background:var(--tile-top);box-shadow:0 5px 0 var(--tile-side);text-align:center;font-weight:600;
 transition:transform .22s var(--spring),box-shadow .22s var(--spring),background .2s}
.option svg{width:64px;height:58px}
.option:hover{transform:translateY(-2px)}
.option[aria-pressed=true]{background:#fff3cf;box-shadow:0 2px 0 var(--ochre-side),0 0 0 3px var(--ochre);transform:translateY(3px)}
html[data-time=night] .option[aria-pressed=true]{background:#4b4470}
.option .order{position:absolute;right:10px;top:8px;width:26px;height:30px;display:grid;place-items:center;background:var(--coral);color:#fff;font-size:.8rem;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.option .order:empty{display:none}
.option:disabled{cursor:default}
.order-strip{padding:10px 14px;border-radius:14px;background:rgba(34,64,90,.06);font-size:.9rem;color:var(--ink-soft)}
.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}
.match-col{display:grid;gap:10px}
.match-col button{display:grid;gap:2px;padding:12px 16px;border:0;border-radius:16px;background:var(--tile-top);box-shadow:0 4px 0 var(--tile-side);text-align:left;font-weight:600;transition:transform .22s var(--spring)}
.match-col button[aria-pressed=true]{box-shadow:0 0 0 3px var(--ochre),0 2px 0 var(--ochre-side);transform:translateY(2px)}
.match-col button.matched{background:#e3f5f2}
html[data-time=night] .match-col button.matched{background:#2c5a63}
.match-col small{color:var(--teal);font-weight:600}
.feedback{margin:14px 0;padding:14px 16px;border-radius:16px;background:rgba(34,64,90,.06);color:var(--ink-soft)}
.feedback.success{background:rgba(143,196,108,.22);color:var(--ink)}
.feedback.success::before{content:"";display:inline-block;width:14px;height:16px;margin-right:8px;vertical-align:-2px;background:var(--grass);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);animation:pop .6s var(--spring)}
.game-actions{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
.game-actions div{display:flex;gap:10px}

/* ---------- 绘本 ---------- */
.story-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.story-tabs button{display:flex;align-items:center;gap:8px;padding:6px 14px 6px 6px;border:0;border-radius:16px;background:var(--tile-top);box-shadow:0 4px 0 var(--tile-side);font-weight:600;transition:transform .22s var(--spring)}
.story-tabs button span{width:30px;height:34px;display:grid;place-items:center;background:rgba(34,64,90,.1);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);font-size:.85rem}
.story-tabs button[aria-pressed=true]{background:var(--teal);color:#fff;box-shadow:0 4px 0 var(--teal-side)}
.story-tabs button[aria-pressed=true] span{background:rgba(255,255,255,.25)}
.storybook{position:relative;min-height:min(74vh,700px)}
.storybook .stage{position:absolute;inset:0}
.story-caption{position:absolute;z-index:5;right:clamp(14px,2vw,26px);top:50%;transform:translateY(-50%);width:min(430px,calc(100% - 28px));padding:clamp(20px,2.6vw,30px)}
.story-caption h3{margin:.3em 0 .4em;font-size:clamp(1.4rem,2.4vw,1.9rem);letter-spacing:.1em;line-height:1.35}
.story-caption p{margin:0 0 14px;color:var(--ink-soft);font-size:1.02rem}
.story-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.story-controls{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:18px}
.page-dots{display:flex;gap:8px}
.page-dots i{width:12px;height:14px;background:rgba(34,64,90,.18);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);transition:background .3s}
.page-dots i.active{background:var(--coral)}
.reduced-note{margin:12px 0 0;color:var(--muted);font-size:.78rem}
.read-btn{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border:0;border-radius:999px;background:var(--tile-top);box-shadow:0 2px 0 var(--tile-side);font-size:.82rem;font-weight:600}
.story-caption.turn{animation:caption-in .55s var(--spring)}
@keyframes caption-in{from{opacity:0;transform:translateY(calc(-50% + 22px))}}

/* ---------- AI 课堂 ---------- */
.classroom{display:grid;grid-template-columns:330px minmax(0,1fr);gap:18px;align-items:start}
.tutor-panel{padding:20px;display:grid;gap:12px}
.tutor-portrait{height:170px;border-radius:20px;background:radial-gradient(70% 70% at 50% 60%,rgba(127,212,204,.6),transparent 72%);display:grid;place-items:center}
.tutor-portrait svg{height:160px;animation:bob 3.6s ease-in-out infinite}
.tutor-panel h3{margin:0;letter-spacing:.12em}
.tutor-panel p{margin:0;color:var(--ink-soft);font-size:.88rem}
.tutor-scope{width:100%}
.suggestions{display:flex;flex-wrap:wrap;gap:8px}
.suggestions button{padding:7px 12px;border:0;border-radius:13px;background:var(--tile-top);box-shadow:0 3px 0 var(--tile-side);font-size:.85rem;text-align:left;transition:transform .2s var(--spring)}
.suggestions button:hover{transform:translateY(-2px)}
.model-consent{display:flex;gap:8px;align-items:flex-start;font-size:.84rem;color:var(--ink-soft)}
.chat{display:grid;grid-template-rows:auto 1fr auto;min-height:min(72vh,680px);overflow:hidden}
.chat-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line)}
.chat-top b{display:block;font-size:.95rem}
.chat-top small{display:block;color:var(--muted);font-size:.78rem}
.status-dot{display:inline-block;width:10px;height:11px;margin-right:8px;background:var(--grass);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.chat-log{padding:18px;overflow:auto;display:grid;align-content:start;gap:14px;max-height:min(58vh,560px)}
.msg{display:grid;gap:6px;max-width:min(680px,92%);animation:caption-in2 .45s var(--spring)}
@keyframes caption-in2{from{opacity:0;transform:translateY(14px)}}
.msg.user{justify-self:end}
.msg .label{font-size:.74rem;color:var(--muted);letter-spacing:.08em}
.msg.user .label{text-align:right}
.bubble{padding:12px 16px;border-radius:18px 18px 18px 6px;background:var(--tile-top);box-shadow:0 3px 0 var(--tile-side);white-space:pre-wrap}
.msg.user .bubble{background:var(--coral);color:#fff;box-shadow:0 3px 0 var(--coral-side);border-radius:18px 18px 6px 18px}
.evidence{padding:10px 14px;border-radius:14px;background:rgba(127,212,204,.14);font-size:.84rem;color:var(--ink-soft)}
.evidence b{color:var(--ink)}
.evidence details{margin-top:6px}
.chat-form{padding:14px 18px 16px;border-top:1px solid var(--line)}
.chat-entry{display:flex;gap:10px;align-items:flex-end}
.chat-entry textarea{flex:1;min-height:52px;max-height:160px;padding:12px 14px;border:0;border-radius:16px;background:var(--tile-top);box-shadow:inset 0 2px 0 rgba(34,64,90,.06),0 3px 0 var(--tile-side);resize:vertical}
.chat-privacy{margin:8px 0 0;color:var(--muted);font-size:.76rem}

/* ---------- 书院 ---------- */
.notes{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.notes article{padding:22px}
.notes h3{margin:.3em 0;letter-spacing:.1em}
.notes p{margin:0;color:var(--ink-soft)}
.study h2{margin:clamp(30px,5vw,48px) 0 14px;font-size:clamp(1.3rem,2.4vw,1.8rem);letter-spacing:.12em}
.library{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.source-card{padding:18px;display:grid;gap:8px;align-content:start}
.source-card .badge{justify-self:start}
.source-card h3{margin:0;font-size:1.05rem;letter-spacing:.06em}
.source-card p{margin:0;color:var(--ink-soft);font-size:.88rem}
.source-card a{color:var(--teal);font-weight:600;font-size:.88rem}
html[data-time=night] .source-card a{color:#8fe0dc}
.cast{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.cast figure{margin:0;padding:16px;text-align:center}
.cast svg{height:170px;margin:0 auto}
.cast figcaption{color:var(--ink-soft);font-size:.88rem;margin-top:6px}
.palette{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.palette span{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--ink-soft)}
.palette i{width:22px;height:25px;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.evidence-table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:20px;background:var(--card);box-shadow:var(--shadow-sm)}
.evidence-table th,.evidence-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:.9rem;vertical-align:top}
.evidence-table th{background:rgba(127,212,204,.18);letter-spacing:.08em}
.evidence-table tr:last-child td{border-bottom:0}
.credits{margin-top:clamp(30px,5vw,48px);padding:24px}
.credits h3{margin:0 0 8px;letter-spacing:.1em}
.credits p{color:var(--ink-soft);font-size:.92rem}
.inline-note{font-size:.8rem;color:var(--muted)}

/* ---------- 提示 ---------- */
#toast{position:fixed;left:50%;bottom:28px;z-index:60;max-width:min(520px,calc(100% - 32px));padding:12px 20px;border-radius:16px;background:var(--ink);color:var(--card-solid);font-weight:600;box-shadow:var(--shadow);
 transform:translate(-50%,30px) scale(.9);opacity:0;pointer-events:none;transition:transform .45s var(--spring),opacity .3s}
html[data-time=night] #toast{background:#f2f0ff;color:#20264f}
#toast.visible{transform:translate(-50%,0) scale(1);opacity:1}

/* ---------- 学段密度 ---------- */
html[data-age=kid]{font-size:17.5px}
html[data-age=kid] .btn{min-height:54px;padding:12px 24px;font-size:1.05rem}
html[data-age=kid] .option svg{width:84px;height:74px}
html[data-age=kid] .map-label .tag{font-size:.86rem}
html[data-age=research] .hero-card h1{font-size:clamp(2rem,4.4vw,3.4rem)}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){.nav a b{display:none}.nav a{padding:9px}.nav a span,.nav a span svg{width:26px;height:26px}}
@media (max-width:1020px){.route-layout,.classroom{grid-template-columns:1fr}.stop-list{max-height:none;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
 .entry-grid{grid-template-columns:1fr}.chapter-panel{grid-template-columns:auto 1fr}.chapter-panel .actions{grid-column:1/-1;justify-content:flex-start}
 .detail{grid-template-columns:1fr}.detail-art{min-height:280px}.notes{grid-template-columns:1fr}}
@media (max-width:860px){
 body{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
 .header{top:8px;gap:10px;padding:8px 10px;-webkit-backdrop-filter:none;backdrop-filter:none;background:color-mix(in srgb,var(--card-solid) 92%,transparent)}
 .brand-copy small{display:none}
 .nav{position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:30;display:grid;grid-template-columns:repeat(6,1fr);gap:2px;margin:0;padding:6px;
  background:var(--card);border:1px solid var(--card-edge);border-radius:22px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
 .nav a{flex-direction:column;gap:0;padding:6px 2px;font-size:.66rem;text-align:center}
 .nav a b{display:block;font-weight:600;white-space:nowrap}
 .nav a span,.nav a span svg{width:24px;height:24px}
 .prefs{margin-left:auto}
 .hero{min-height:0;display:grid}
 .hero .stage{position:relative;inset:auto;height:56vh;min-height:340px}
 .hero-card{position:relative;left:auto;top:auto;transform:none;width:auto;margin:-46px 10px 0}
 .storybook{min-height:0;display:grid}
 .storybook .stage{position:relative;inset:auto;height:52vh;min-height:320px}
 .story-caption{position:relative;right:auto;top:auto;transform:none;width:auto;margin:-40px 10px 0}
 .story-caption.turn{animation-name:caption-in2}
 .archipelago{grid-template-columns:repeat(7,minmax(150px,46%))}
 .map-stage{height:62vh;min-height:380px}
 .facts{grid-template-columns:1fr}
 .cast{grid-template-columns:1fr 1fr 1fr}
 .cast svg{height:110px}
}
@media (max-width:560px){
 main{width:calc(100% - 24px)}
 .prefs{gap:6px}.tile-icon{width:40px;height:40px}.tile-select{max-width:118px;padding-right:28px;font-size:.84rem}
 .brand-copy{display:none}
 .toolbar{gap:8px}.toolbar .segmented{width:100%;overflow-x:auto}.search{width:100%}
 .match-grid{grid-template-columns:1fr}
 .game-head{grid-template-columns:84px 1fr}.game-head .art{width:84px;height:76px}
 .game-options{grid-template-columns:1fr 1fr}
 .cast{grid-template-columns:1fr}
 .evidence-table th:nth-child(2),.evidence-table td:nth-child(2){display:none}
 .story-controls{flex-wrap:wrap}
 .detail-art .segmented{width:max-content;max-width:calc(100% - 20px)}
}

/* ---------- Q avatar + audited safe layout (2026-10-05) ---------- */
:root{--muted:#526e80;--coral:#bf4c34;--coral-side:#993822;--teal:#23777a;--teal-side:#1b6063}
[hidden]{display:none!important}#main:focus,#main:focus-visible{outline:none}html{scroll-padding-top:100px}
.badge{white-space:normal;overflow-wrap:anywhere;max-width:100%}.badge.warm{color:#a3422e}.badge.gold{color:#805813}html[data-time=night] .badge.warm{color:#ffbba6}
.hero{display:grid;grid-template-columns:minmax(330px,.82fr) minmax(0,1.18fr);gap:22px;align-items:stretch;min-height:0}
.hero .stage-frame{grid-column:2;grid-row:1;min-width:0}.hero-card{position:relative;left:auto;top:auto;transform:none;grid-column:1;grid-row:1;width:auto;margin:0;padding:28px}
.hero-card h1{font-size:clamp(2.1rem,3.6vw,3.1rem);letter-spacing:.035em;line-height:1.24}.hero-card .eyebrow{letter-spacing:.08em;font-size:.8rem}.hero-card .intro{font-size:.94rem}
.hero-guide{display:flex;align-items:center;gap:14px;margin-top:18px}.hero-guide>div{flex:0 0 95px}.hero-guide svg{width:95px;height:138px}.hero-guide p{margin:0;font-size:.82rem}.hero-guide b,.hero-guide span{display:block}.hero-guide span{color:var(--ink-soft);margin:5px 0}.hero-guide a{display:inline-flex;min-height:44px;align-items:center;font-size:.8rem}
.hero .stage,.storybook .stage{position:relative;inset:auto;height:100%;min-height:410px;border-radius:24px}
.stage-frame{display:grid;grid-template-rows:minmax(0,1fr) auto;min-width:0;border-radius:26px;border:1px solid var(--card-edge);background:var(--card);overflow:hidden}
.stage-footer{position:relative;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:14px 16px;border-top:1px solid var(--line);min-width:0}
.stage-footer .stage-chip,.stage-footer .stage-tools,.stage-footer .stage-hint,.stage-footer .map-legend{position:static;max-width:100%;transform:none;backdrop-filter:none;-webkit-backdrop-filter:none}
.stage-footer .stage-chip{flex:1;min-width:180px}.stage-footer .stage-hint{color:var(--ink-soft);text-shadow:none;font-size:.76rem}.stage-footer .stage-tools{flex-wrap:wrap}.stage-footer .tile-icon{width:44px;height:44px;flex-shrink:0}
.stage-footer .stage-chip .badge{background:transparent;color:var(--ink-soft);padding:0;font-weight:500}.stage-footer .map-legend{padding:0;background:transparent;font-size:.78rem;color:var(--ink-soft);flex-direction:row;flex-wrap:wrap;gap:8px 14px;flex:1}
.stage-footer .map-legend span:last-child{flex-basis:100%}.stage-footer .stage-hint{width:100%}
.storybook{display:grid;grid-template-columns:minmax(0,1.28fr) minmax(320px,.9fr);gap:20px;align-items:stretch;min-height:0}
.storybook .stage{min-height:440px}.story-caption{position:relative;top:auto;right:auto;transform:none;width:auto;margin:0;padding:24px}.story-caption.turn{animation-name:caption-in2}
.story-caption .badge{font-size:.77rem}.story-caption p{font-size:.96rem}.story-controls{flex-wrap:wrap}.story-controls .btn{min-height:44px}.story-caption .reduced-note{font-size:.76rem;line-height:1.8;margin-top:16px}
.stage[data-time=night] .map-label .tag{background:#293656;color:#eef2ff}.stage[data-time=night] .map-label:is(:hover,:focus-visible,.is-selected) .tag{background:#e4b24c;color:#3b2a10}
.map-label:focus-visible{z-index:10}.map-label.is-tucked:focus-visible .tag,.map-label.is-tucked:hover .tag{display:block}.map-label .tag{max-width:230px}.map-label.is-tucked{min-width:18px;min-height:18px}
.stop-item{min-width:0;grid-template-columns:36px minmax(0,1fr) auto;gap:9px}.stop-item .n{width:34px;height:39px}.stop-item small,.source-locator{overflow-wrap:anywhere}
.isle-art svg,.game-cover svg,.game-head .art svg{width:100%;height:100%}.game-cover{grid-template-rows:minmax(0,1fr) auto;aspect-ratio:auto}.game-cover svg{height:195px}.game-cover .badge{position:static;justify-self:start;margin:0 12px 12px}.isle-art{overflow:visible}
/* Modal header and scroll body have separate tracks; the close button never overlays content. */
dialog[open]{display:flex;flex-direction:column;overflow:hidden;max-height:calc(100dvh - 24px)}.dialog-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;flex:none;background:var(--card-solid);border-bottom:1px solid var(--line);font-size:.84rem;color:var(--ink-soft)}
.dialog-close{position:static;flex-shrink:0;width:44px;height:44px}.dialog-bar+div{flex:none}#detail-body{overflow:auto;overscroll-behavior:contain;min-height:0;scrollbar-gutter:stable;scroll-padding:16px}
#dialog-status{padding:10px 16px;background:rgba(127,212,204,.18);font-size:.84rem;max-height:100px;overflow:auto}
.detail{align-items:start}.detail-art{padding:18px;gap:14px;grid-template-rows:auto minmax(200px,1fr) auto;min-height:0;align-self:start;overflow:hidden}
.detail-art svg{grid-row:2;height:320px;max-height:none}.detail-art .art-note{position:static;grid-row:1;max-width:100%}.detail-art .art-note .badge{background:var(--card-solid);color:var(--ink-soft)}
.detail-art .segmented{position:static;transform:none;grid-row:3;max-width:100%;width:auto;justify-self:center;flex-wrap:wrap;white-space:normal;background:var(--card-solid)}.detail-art .segmented button{min-height:44px}
.game-head{grid-template-columns:150px minmax(0,1fr)}.game-head .art{width:150px;height:135px;overflow:visible}.game-head h2{overflow-wrap:anywhere}.game-actions>div{flex-wrap:wrap}.game-actions .btn{max-width:100%;min-height:44px}.game-actions{gap:16px;padding-bottom:7px}
.chat,.chat-entry,.chat-log,.tutor-panel,.msg{min-width:0}.chat-entry textarea{min-width:0;width:100%;font-size:16px}.bubble,.evidence,.source-links a{overflow-wrap:anywhere}.read-btn{min-height:44px}
.tutor-portrait{height:230px}.tutor-portrait svg{height:220px}.tutor-scope{min-width:0;max-width:100%}
#character-studio{scroll-margin-top:105px}.costume-switch{flex-wrap:wrap;margin:8px 0 20px}.costume-switch button{min-height:48px}.cast svg{height:255px;max-width:100%}
.character-turnaround{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:20px;border-radius:24px;padding:20px;background:var(--card)}.character-turnaround figure{min-width:0;margin:0;text-align:center}.character-turnaround svg{height:205px;margin:0 auto}.character-turnaround figcaption{font-size:.82rem;color:var(--ink-soft);margin-top:8px}
#toast{position:relative;left:auto;bottom:auto;transform:none;max-width:min(1280px,calc(100% - 32px));margin:0 auto;padding:0;max-height:0;overflow:hidden;opacity:0;border-radius:16px;transition:none}
#toast.visible{transform:none;opacity:1;max-height:none;margin-top:12px;padding:12px 18px}
@media(min-width:861px) and (max-width:1180px){.nav{gap:2px}.nav a{padding:8px 6px;font-size:.8rem}.nav a b{display:block}.nav a span{display:none}.header{gap:10px}.brand-copy b{font-size:1rem;letter-spacing:.06em}.prefs{gap:6px}.tile-select{max-width:158px}}
@media(max-width:1020px){.hero{grid-template-columns:minmax(290px,.9fr) minmax(0,1.1fr);gap:16px}.hero-card{padding:23px}.hero .stage{min-height:390px}.storybook{grid-template-columns:minmax(0,1fr)}.storybook .stage{height:440px;min-height:0}.detail-art svg{height:300px}.detail-art{grid-template-rows:auto 300px auto}.stage-footer .stage-chip{min-width:140px}}
@media(max-width:860px){.header{position:relative;top:auto}.nav a{min-height:54px}.hero{grid-template-columns:1fr;gap:14px}.hero .stage-frame{grid-row:1;grid-column:1}.hero-card{grid-row:2;grid-column:1;margin:0}.hero .stage{height:350px;min-height:0}.story-caption{margin:0}.story-controls{gap:12px}.stage-footer{padding:12px}.hero-proof{margin-top:14px}.cast svg{height:210px}html{scroll-padding-top:20px}#character-studio{scroll-margin-top:20px}.chapter-panel .actions a{max-width:100%;white-space:normal}.stage-frame{min-width:0}.route-layout>div{min-width:0}}
@media(max-width:560px){.hero .stage{height:280px}.hero-card h1,html[data-age=research] .hero-card h1{font-size:2.12rem}.hero-card{padding:22px}.hero-guide>div{flex-basis:84px}.hero-guide svg{width:84px;height:124px}.hero-guide p{font-size:.8rem}
 .hero-actions .btn{padding:11px 15px;min-height:48px;font-size:.86rem}.hero-guide{margin-top:14px}.stage-chip .badge{font-size:.74rem}.stage-footer .stage-hint{font-size:.7rem}.stage-footer .stage-tools{gap:8px}
 .page-heading h1{font-size:1.95rem;letter-spacing:.04em}.page-heading p{font-size:.9rem}.story-tabs{gap:9px}.story-tabs button{font-size:.83rem;min-height:44px}.storybook .stage{height:300px}.story-caption{padding:20px}.story-caption p{font-size:.93rem}.story-controls .btn{font-size:.83rem;padding:9px 12px}.page-dots{gap:5px}.page-dots i{width:9px;height:11px}
 .detail-art svg{height:235px}.detail-art{grid-template-rows:auto 235px auto;padding:14px}.detail-art .segmented{width:100%;justify-content:center;gap:4px}.detail-art .segmented button{font-size:.8rem;padding:7px 10px}.detail-content{padding:20px}.detail-actions .btn{font-size:.86rem;padding:10px 14px}.dialog-bar{padding:10px 14px}.game-head{grid-template-columns:100px minmax(0,1fr);gap:13px}.game-head .art{width:100px;height:94px}.game-body{padding:18px}.game-head h2{font-size:1.18rem;letter-spacing:.04em}.game-head .eyebrow{font-size:.73rem;letter-spacing:.04em}
 .game-actions .btn{font-size:.85rem;padding:10px 13px}.match-grid{grid-template-columns:1fr 1fr;gap:10px}.match-col button{padding:12px 10px;font-size:.84rem;min-width:0;min-height:60px}.game-options{gap:12px}.option{font-size:.88rem;min-height:115px}.game-cover svg{height:220px}
 .tutor-portrait{height:210px}.tutor-portrait svg{height:200px}.cast{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.cast figure{padding:10px 3px}.cast svg{height:145px}.cast figcaption{font-size:.68rem}.character-turnaround{gap:7px;padding:10px}.character-turnaround svg{height:130px}.character-turnaround figcaption{font-size:.7rem}.costume-switch{width:100%}.costume-switch button{flex:1;font-size:.8rem;padding:7px 10px}.evidence-table th:nth-child(2),.evidence-table td:nth-child(2){display:table-cell}.evidence-table th,.evidence-table td{padding:10px 8px;font-size:.76rem}
 html[data-age=kid] .game-actions .btn,html[data-age=kid] .hero-actions .btn{font-size:.87rem;padding:11px 14px}.search{font-size:16px}.tile-select.tutor-scope{max-width:100%;font-size:16px}.chat-entry button{flex:none;padding:10px 12px;font-size:.84rem}.stage-chip{min-width:0!important}
}
@media(max-width:360px){.header{padding:8px;gap:6px}.prefs{gap:5px}.brand-mark,.brand-mark svg{width:33px}.prefs .tile-select{max-width:107px;font-size:.73rem;padding-left:8px}.prefs .tile-icon{width:38px}.nav a{font-size:.6rem}.hero-card{padding:18px}.hero-card h1{font-size:1.85rem}.game-actions>div{width:100%;justify-content:space-between}.game-head h2{font-size:1.1rem}}

/* Folded colliding map labels must not intercept clicks on the visible label.
   Every location remains in the list; Tab focus expands its full map label. */
.map-label.is-tucked{pointer-events:none}.map-label.is-tucked:focus-visible{pointer-events:auto;z-index:12}.map-label:not(.is-tucked){z-index:2}
/* Small screens: navigation occupies its own header row instead of covering the
   story footer, map or submit buttons at the bottom of the visual viewport. */
@media(max-width:860px){
 body{padding-bottom:calc(14px + env(safe-area-inset-bottom))}
 .header{flex-wrap:wrap;position:relative;top:auto}.prefs{margin-left:auto}
 .nav{position:static;order:3;flex:0 0 100%;inset:auto;z-index:auto;width:100%;margin:2px 0 0;padding:8px 0 0;grid-template-columns:repeat(6,minmax(0,1fr));border:0;border-top:1px solid var(--line);border-radius:0;box-shadow:none;background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
 .nav a{min-width:0;min-height:54px;font-size:.7rem}.nav a span,.nav a span svg{width:22px;height:22px}
}
/* ---------- 减少动态效果 ---------- */
html[data-motion=off] *,html[data-motion=off] *::before,html[data-motion=off] *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
html[data-motion=off] .rise .ch{transform:none}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.rise .ch{transform:none}}
html[data-hidden=true] *{animation-play-state:paused!important}
@media print{.header,.footer,.stage,.nav,#toast{display:none!important}body{background:#fff}}