/* 语文屋 · 乙「水晶纸窗」（John 2026-09-06 拍板）
   浅底 + 一道七色散射光 + 薄玻璃白线边；一周七种颜色按七曜（月火水木金土日）走。
   两条硬规矩（John）：
   ① 按钮要有真正的立体感、玻璃感、玛瑙感——见 .gb 一族。
   ② 文字与底色反差必须够：正文墨色 --ink 永远是深色；曜色只上"面"（底、边、光），
      要上"字"的地方只用 --day-deep（亮度压到 46% 以下，黄橙两天压到 36-40%）。 */
:root {
  --h: 233; --s: 79%; --l: 65%; --h2: 270; --lb: 46%;
  --day: hsl(var(--h) var(--s) var(--l));
  --day2: hsl(var(--h2) var(--s) var(--l));
  --day-deep: hsl(var(--h) var(--s) var(--lb));
  --day-ink: hsl(var(--h) 45% 28%);
  --ink: #1b2436; --ink-soft: #4a5566; --ink-faint: #7b8494;
  --paper: hsl(var(--h) 34% 96%);
  --serif: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --kai: "Kaiti SC", "STKaiti", "KaiTi", "楷体", "LXGW WenKai", serif;
  --red: #c8332c;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.6; -webkit-font-smoothing: antialiased; position: relative; }
.hidden { display: none !important; }
a { color: inherit; }

/* ── 底：一块淡曜色的纸 + 两团光 + 一道七色散射 + 两根窗棂白线 ── */
.sky { position: fixed; inset: 0; z-index: -1; overflow: hidden; background:
  radial-gradient(45% 40% at 79% 18%, hsl(var(--h) var(--s) 84% / .9), transparent 70%),
  radial-gradient(38% 34% at 16% 82%, hsl(var(--h2) var(--s) 86% / .8), transparent 70%), var(--paper); }
.sky:before { content: ""; position: absolute; left: -10%; top: -32%; width: 120%; height: 60%; transform: rotate(-14deg);
  background: linear-gradient(90deg, transparent 0, hsl(0 90% 80%/.26) 18%, hsl(45 95% 75%/.28) 30%, hsl(140 80% 78%/.28) 42%, hsl(210 90% 80%/.3) 56%, hsl(275 85% 80%/.28) 70%, transparent 90%);
  filter: blur(26px); }
.sky:after { content: ""; position: absolute; inset: 0; background:
  linear-gradient(90deg, rgba(255,255,255,0) 0 24%, rgba(255,255,255,.5) 24.5%, rgba(255,255,255,0) 25%),
  linear-gradient(90deg, rgba(255,255,255,0) 0 66%, rgba(255,255,255,.38) 66.5%, rgba(255,255,255,0) 67.5%); }

/* ── 玻璃面：薄、脆、一根白线 + 一圈淡曜色描边 ── */
.glass { background: linear-gradient(135deg, rgba(255,255,255,.74), rgba(255,255,255,.46));
  backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255,255,255,.95); outline: 1px solid hsl(var(--h) var(--s) 70% / .3); outline-offset: -2px;
  box-shadow: inset 0 1px 0 #fff, 0 1px 2px hsl(var(--h) 40% 50% / .08), 0 20px 40px -26px hsl(var(--h) 60% 40% / .45); }
.card { position: relative; padding: 20px 22px; border-radius: 18px; }

/* ── 头 ── */
header.yw { display: flex; align-items: center; gap: 18px; padding: 14px 30px; font-size: 14px; position: sticky; top: 0; z-index: 10;
  background: linear-gradient(180deg, rgba(255,255,255,.8), rgba(255,255,255,.55)); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255,255,255,.9); }
header.yw .brand { font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: 2px; display: flex; align-items: center; gap: 10px; text-decoration: none; }
header.yw .brand img { width: 34px; height: 34px; border-radius: 9px; box-shadow: 0 2px 8px hsl(var(--h) 40% 40% / .25); }
header.yw nav { display: flex; gap: 18px; font-size: 15px; }
header.yw nav a { text-decoration: none; color: var(--ink-soft); padding-bottom: 3px; }
header.yw nav a.on { color: var(--ink); font-weight: 600; border-bottom: 2.5px solid var(--day-deep); }
header.yw .spacer { flex: 1; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; font-size: 12.5px; color: var(--ink);
  background: rgba(255,255,255,.75); border: 1px solid hsl(var(--h) var(--s) 70% / .45); box-shadow: inset 0 1px 0 #fff; }
.chip i { width: 10px; height: 10px; border-radius: 50%; background: var(--day-deep); box-shadow: inset 0 1px 0 rgba(255,255,255,.6); }
header.yw select { font: inherit; font-size: 13px; padding: 6px 12px; border-radius: 999px; border: 1px solid hsl(var(--h) var(--s) 70% / .45); background: rgba(255,255,255,.8); color: var(--ink); }

/* ── 版心 ── */
/* 主列必须 minmax(0,1fr)：grid 隐式列按 min-content 算，长卷四段 1300px 会把整页撑宽（手机上撑到 1400 多） */
main.yw { max-width: 1120px; margin: 0 auto; padding: 22px 26px 60px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 22px; min-width: 0; }
html, body { overflow-x: hidden; }
.today { display: grid; grid-template-columns: 1.55fr 1fr; gap: 16px; }
.kicker { font-size: 12px; letter-spacing: .12em; color: var(--ink-soft); margin: 0 0 8px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.kicker em { font-style: normal; font-family: var(--serif); font-size: 16px; letter-spacing: 0; padding: 2px 9px; border-radius: 8px; background: var(--day-deep); color: #fff; text-shadow: 0 1px 0 rgba(0,0,0,.2); }
.card h3 { font-family: var(--serif); font-weight: 400; font-size: 28px; margin: 0 0 4px; line-height: 1.25; }
.card h4 { font-family: var(--serif); font-weight: 400; font-size: 19px; margin: 0 0 8px; }
.card p { margin: 0; }
.sub { color: var(--ink-soft); margin: 0 0 12px; }
.why { font-size: 12.5px; color: var(--ink-soft); margin-top: 10px; }
.why:before { content: "为什么是今天 · "; color: var(--ink-faint); }
.poem { font-family: var(--kai); font-size: 20px; line-height: 1.95; margin: 6px 0 10px; letter-spacing: .06em; color: var(--ink); }
.poem .ln { display: block; transition: color .3s, text-shadow .3s; }
.poem .ln.hit { color: var(--day-ink); text-shadow: 0 0 12px hsl(var(--h) var(--s) 70% / .8); }
.poem .ln.veil { color: transparent; text-shadow: 0 0 14px rgba(27,36,54,.55); }
.poem small { display: block; font-family: var(--sans); font-size: 12px; color: var(--ink-soft); letter-spacing: 0; }
.hero:after { content: ""; position: absolute; right: -30px; top: -30px; width: 160px; height: 160px; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle at 35% 35%, rgba(255,255,255,.95), hsl(var(--h) var(--s) 80% / .4) 45%, transparent 70%); filter: blur(2px); }
.hero { overflow: hidden; }
.hero .spec { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(200px 140px at var(--mx, 80%) var(--my, 10%), rgba(255,255,255,.45), transparent 70%); }
.hero > * { position: relative; }
.btns { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; align-items: center; }
.words { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0 2px; }
.words span { font-family: var(--kai); font-size: 15px; padding: 3px 10px; border-radius: 9px; background: rgba(255,255,255,.7); border: 1px solid hsl(var(--h) var(--s) 70% / .4); color: var(--ink); }
.cover { width: 84px; height: 116px; border-radius: 8px; flex: none; object-fit: cover; background: linear-gradient(160deg, var(--day), var(--day2));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.6), 0 10px 20px -10px rgba(0,0,0,.45); }
.book { display: flex; gap: 14px; align-items: flex-start; }
.hook { font-family: var(--kai); font-size: 18px; color: var(--ink); margin: 0 0 6px; }

/* 迷你三行 */
.mini { display: grid; gap: 12px; align-content: start; }
.mini .row { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 14px; text-decoration: none; color: var(--ink); transition: transform .25s; }
.mini .row:hover { transform: translateY(-2px); }
.mini .row b { font-family: var(--serif); font-size: 22px; font-weight: 400; min-width: 38px; text-align: center; color: var(--day-ink); }
.mini .row span { flex: 1; }
.mini .row small { display: block; font-size: 12px; color: var(--ink-soft); }

/* 哈气擦玻璃 */
.fog { position: relative; margin-top: 14px; padding: 12px 14px; border-radius: 12px; overflow: hidden; min-height: 60px; }
.fog .txt { font-family: var(--kai); font-size: 18px; letter-spacing: .05em; color: var(--ink); }
.fog .txt small { display: block; font-family: var(--sans); font-size: 11.5px; color: var(--ink-soft); letter-spacing: 0; }
.fog canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; transition: opacity .8s; touch-action: none; }
.fog .tip { position: absolute; right: 12px; bottom: 8px; font-size: 11.5px; color: var(--ink-soft); pointer-events: none; }

/* ── 五扇门 ── */
.doors { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.door { position: relative; height: 150px; border-radius: 16px; padding: 14px 12px; display: flex; flex-direction: column; justify-content: space-between; text-decoration: none; color: var(--ink);
  background: linear-gradient(180deg, rgba(255,255,255,.88), hsl(var(--h) var(--s) 92% / .85)); border: 1px solid #fff;
  box-shadow: inset 0 1px 0 #fff, inset -1px 0 0 hsl(var(--h) var(--s) 75% / .4), 0 12px 24px -18px hsl(var(--h) 60% 40% / .5); transition: transform .35s cubic-bezier(.2,.7,.2,1), box-shadow .35s; }
.door:before { content: ""; position: absolute; left: 10px; right: 10px; top: 8px; height: 1px; background: linear-gradient(90deg, transparent, #fff, transparent); }
.door:hover { transform: translateY(-4px); box-shadow: inset 0 1px 0 #fff, 0 18px 30px -18px hsl(var(--h) 60% 40% / .6); }
.door .zi { font-family: var(--serif); font-size: 38px; line-height: 1; writing-mode: vertical-rl; color: var(--day-ink); }
.door .desc { font-size: 12px; color: var(--ink-soft); line-height: 1.4; }
.door .desc b { display: block; font-weight: 600; color: var(--ink); font-size: 13px; margin-bottom: 2px; }
.door.soon { opacity: .72; }
.door.soon .desc b:after { content: " · 快了"; color: var(--ink-faint); font-weight: 400; }

/* ── 底部三张（John 9/8：排版要 decent）：三等分、等高、同一套头部，按钮一律沉到卡底对齐 ── */
.bottom { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; align-items: stretch; }
.bottom .card { display: flex; flex-direction: column; gap: 6px; padding: 20px 22px 18px; }
.bottom .card h4 { margin: 0 0 6px; padding-bottom: 8px; border-bottom: 1px solid hsl(var(--h) 30% 60% / .25); font-size: 18px; letter-spacing: .04em; }
.bottom .card > .btns { margin-top: auto; padding-top: 12px; }
.bottom .card .line { line-height: 1.6; }
/* 用 grid 的 minmax(0,1fr)：flex 子项算 min-content 时会把 5 张封面的原始宽度算进去，手机上把整页撑到 1400 多像素 */
.cover-strip { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin: 8px 0 4px; }
.cover-strip a { min-width: 0; cursor: pointer; }
.cover-strip img { width: 100%; aspect-ratio: 3 / 4.2; object-fit: cover; border-radius: 6px; box-shadow: 0 8px 16px -10px rgba(0,0,0,.55); background: linear-gradient(160deg, var(--day), var(--day2)); display: block; transition: transform .25s; }
.cover-strip a:hover img { transform: translateY(-3px); }
.cover-strip small { display: block; font-size: 11.5px; color: var(--ink-soft); margin-top: 4px; line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: center; }
.shards { display: flex; gap: 8px; margin: 10px 0 8px; }
.shard { width: 34px; height: 44px; clip-path: polygon(50% 0, 100% 30%, 88% 100%, 12% 100%, 0 30%); display: grid; place-items: center; font-family: var(--serif); font-size: 13px; color: #fff; text-shadow: 0 1px 0 rgba(0,0,0,.25); background: var(--c); opacity: .3; position: relative; }
.shard.done { opacity: 1; }
.shard.visited { opacity: .6; }
.shard.now { opacity: 1; box-shadow: 0 0 0 2px #fff; }
.shard.now:after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.65) 48%, transparent 62%); animation: shine 2.6s linear infinite; }
@keyframes shine { from { transform: translateX(-100%) } to { transform: translateX(100%) } }
.wall { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; min-height: 48px; }
.stamp { width: 46px; height: 46px; border: 2px solid var(--red); color: var(--red); border-radius: 6px; display: grid; place-items: center; font-family: var(--kai); font-weight: 700; font-size: 22px; transform: rotate(-6deg); background: rgba(255,255,255,.4); box-shadow: inset 0 0 0 1px rgba(200,51,44,.35); }
.stamp.new { animation: stampin .55s cubic-bezier(.2,1.4,.4,1) both; }
.stamp.rainbow { border-color: transparent; background: conic-gradient(from 0deg, #f66, #fc6, #6d6, #6cf, #96f, #f6c, #f66); color: #fff; text-shadow: 0 1px 2px rgba(0,0,0,.4); }
@keyframes stampin { 0% { transform: scale(1.9) rotate(-18deg); opacity: 0 } 60% { transform: scale(.92) rotate(-4deg); opacity: 1 } 100% { transform: scale(1) rotate(-6deg); opacity: 1 } }
.wall .empty { font-size: 12.5px; color: var(--ink-soft); }
.line { font-size: 12.5px; color: var(--ink-soft); }

/* ── 3D 玛瑙玻璃按钮（John：每一个按钮都要漂亮） ──
   五层叠出来：顶部一道糖衣高光 / 玛瑙同心纹 / 主体上亮下深 / 内侧底部一圈暗 / 外侧曜色投影 + 1px 底座。 */
.gb { position: relative; font: inherit; font-size: 14px; font-weight: 600; padding: 10px 18px; border-radius: 14px; border: 0; cursor: pointer; color: #fff;
  letter-spacing: .02em; text-shadow: 0 1px 1px rgba(0,0,0,.35); display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  background:
    radial-gradient(120% 80% at 50% -20%, rgba(255,255,255,.55), rgba(255,255,255,0) 60%),
    repeating-radial-gradient(ellipse 140% 90% at 30% 130%, rgba(255,255,255,.10) 0 5px, rgba(255,255,255,0) 5px 13px),
    linear-gradient(180deg, hsl(var(--h) var(--s) calc(var(--lb) + 16%)), hsl(var(--h) var(--s) var(--lb)) 55%, hsl(var(--h) var(--s) calc(var(--lb) - 8%)));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.8), inset 0 -3px 6px hsl(var(--h) var(--s) 25% / .45), inset 0 0 0 1px hsl(var(--h) var(--s) 30% / .35),
    0 10px 20px -10px hsl(var(--h) var(--s) 40% / .9), 0 2px 0 hsl(var(--h) var(--s) calc(var(--lb) - 18%));
  transition: transform .15s cubic-bezier(.34,1.56,.64,1), box-shadow .15s, filter .15s; }
.gb:after { content: ""; position: absolute; left: 7%; right: 7%; top: 2px; height: 44%; border-radius: 12px 12px 40% 40% / 12px 12px 100% 100%;
  background: linear-gradient(180deg, rgba(255,255,255,.72), rgba(255,255,255,.06)); pointer-events: none; }
.gb:hover { transform: translateY(-1.5px); filter: brightness(1.06); }
.gb:active { transform: translateY(1px); box-shadow: inset 0 2px 6px rgba(0,0,0,.28), inset 0 0 0 1px hsl(var(--h) var(--s) 30% / .35), 0 1px 0 hsl(var(--h) var(--s) calc(var(--lb) - 18%)); }
.gb:focus-visible { outline: 3px solid hsl(var(--h) var(--s) 50% / .5); outline-offset: 2px; }
.gb:disabled { opacity: .45; cursor: not-allowed; transform: none; filter: grayscale(.4); }
.gb.big { font-size: 16px; padding: 13px 24px; border-radius: 16px; }
.gb.sm { font-size: 13px; padding: 7px 13px; border-radius: 11px; }
/* 白玛瑙：浅面上的次要按钮——字是深墨色，永远看得清 */
.gb.ghost { color: var(--ink); text-shadow: 0 1px 0 #fff;
  background:
    radial-gradient(120% 80% at 50% -20%, rgba(255,255,255,.9), rgba(255,255,255,0) 60%),
    repeating-radial-gradient(ellipse 140% 90% at 30% 130%, hsl(var(--h) var(--s) 80% / .12) 0 5px, rgba(255,255,255,0) 5px 13px),
    linear-gradient(180deg, #fff, hsl(var(--h) 45% 94%) 55%, hsl(var(--h) 40% 88%));
  box-shadow: inset 0 1px 0 #fff, inset 0 -2px 5px hsl(var(--h) 35% 70% / .5), inset 0 0 0 1px hsl(var(--h) 35% 78% / .8),
    0 8px 16px -10px hsl(var(--h) 40% 40% / .55), 0 2px 0 hsl(var(--h) 30% 78%); }
.gb.ghost:active { box-shadow: inset 0 2px 6px hsl(var(--h) 35% 60% / .35), 0 1px 0 hsl(var(--h) 30% 78%); }
/* 朱砂玛瑙：盖章、录音这种"落下去"的动作 */
.gb.red { --h: 6; --s: 70%; --lb: 46%; }
.gb.rec { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px hsl(6 70% 50% / .18), 0 10px 20px -10px hsl(6 70% 40% / .9), 0 2px 0 hsl(6 70% 28%); } }
/* 选项按钮：一整行的玻璃，选中变曜色 */
.opt { display: block; width: 100%; text-align: left; white-space: normal; font-weight: 500; line-height: 1.5; padding: 11px 14px; margin: 8px 0; border-radius: 14px; }
.opt.picked { color: #fff; text-shadow: 0 1px 1px rgba(0,0,0,.35);
  background: radial-gradient(120% 80% at 50% -20%, rgba(255,255,255,.5), rgba(255,255,255,0) 60%), linear-gradient(180deg, hsl(var(--h) var(--s) calc(var(--lb) + 14%)), hsl(var(--h) var(--s) var(--lb)) 60%, hsl(var(--h) var(--s) calc(var(--lb) - 6%)));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.8), inset 0 -3px 6px hsl(var(--h) var(--s) 25% / .45), 0 10px 20px -10px hsl(var(--h) var(--s) 40% / .9), 0 2px 0 hsl(var(--h) var(--s) calc(var(--lb) - 18%)); }
.opt.right { --h: 150; --s: 55%; --lb: 34%; }
.opt .ord { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: #fff; color: var(--day-ink); font-weight: 700; font-size: 12px; margin-right: 8px; box-shadow: 0 1px 2px rgba(0,0,0,.25); }
.opt.wrong { --h: 6; --s: 70%; --lb: 46%; }

/* ── 这一课 / 字卡 / 听写台 ── */
.lesson-now { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin: 2px 0 6px; }
.lesson-now b { font-family: var(--serif); font-weight: 400; font-size: 22px; color: var(--ink); }
.lesson-now .chip i { background: var(--day-deep); }
.stage { display: inline-flex; gap: 6px; align-items: center; font-size: 12.5px; color: var(--ink-soft); }
.stage .dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.9); box-shadow: inset 0 0 0 1px hsl(var(--h) var(--s) 70% / .6); }
.stage .dot.on { background: var(--red); box-shadow: none; }
.zigrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: 10px; margin: 8px 0 4px; }
.zi-card { position: relative; aspect-ratio: 1; border-radius: 14px; display: grid; place-items: center; cursor: pointer; text-decoration: none; color: var(--ink);
  background: linear-gradient(150deg, #fff, hsl(var(--h) var(--s) 93%) 55%, hsl(var(--h) var(--s) 88%)); border: 1px solid #fff;
  box-shadow: inset 0 1px 0 #fff, inset 0 -2px 5px hsl(var(--h) 35% 70% / .45), 0 8px 16px -10px hsl(var(--h) 40% 40% / .5); transition: transform .2s; }
.zi-card:hover { transform: translateY(-2px); }
.zi-card:before { content: ""; position: absolute; inset: 6px; border: 1px dashed hsl(var(--h) var(--s) 70% / .45); border-radius: 9px; pointer-events: none; }
.zi-card:after { content: ""; position: absolute; left: 50%; top: 6px; bottom: 6px; border-left: 1px dashed hsl(var(--h) var(--s) 70% / .3); pointer-events: none; }
.zi-card .hz { font-family: var(--kai); font-size: 30px; line-height: 1; position: relative; z-index: 1; }
.zi-card .py { position: absolute; top: 7px; left: 0; right: 0; text-align: center; font-size: 11px; color: var(--day-ink); letter-spacing: .02em; z-index: 1; }
.zi-card.read { box-shadow: inset 0 1px 0 #fff, 0 0 0 2px hsl(var(--h) var(--s) 60% / .55), 0 8px 16px -10px hsl(var(--h) 40% 40% / .5); }
.wordrow { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0; }
.wordrow .w { font-family: var(--kai); font-size: 18px; padding: 6px 12px; border-radius: 10px; background: rgba(255,255,255,.8); border: 1px solid #fff; box-shadow: inset 0 1px 0 #fff, 0 6px 12px -10px hsl(var(--h) 40% 40% / .5); cursor: pointer; }
.wordrow .w.read { background: hsl(var(--h) var(--s) 90%); }
.hub { display: grid; gap: 12px; }
.hub .row { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 16px; }
.hub .row b { font-family: var(--serif); font-size: 24px; font-weight: 400; min-width: 40px; text-align: center; color: var(--day-ink); }
.hub .row .t { flex: 1; }
.hub .row .t small { display: block; font-size: 12.5px; color: var(--ink-soft); }
.shot-preview { width: 100%; max-height: 42vh; object-fit: contain; border-radius: 14px; background: #10241c; }
/* 拍课本取景（John 9/8：课本/A4 都是竖的，取景要竖着框、框要大）：取景框占满可用高度，
   电脑横向摄像头用 cover 铺满，中间一个 1:1.41（16 开/A4）的竖框，框外压暗；拍下时只裁框内那一块 */
.cam-wrap { position: relative; height: min(72vh, 900px); border-radius: 14px; overflow: hidden; background: #10241c; }
#shot-cam { width: 100%; height: 100%; object-fit: cover; display: block; min-height: 0; max-height: none; border-radius: 0; }
.cam-guide { position: absolute; top: 3%; bottom: 3%; left: 50%; transform: translateX(-50%); aspect-ratio: 1 / 1.41; border: 2px dashed rgba(255,255,255,.8); border-radius: 10px; box-shadow: 0 0 0 9999px rgba(0,0,0,.38); pointer-events: none; }
.cam-guide:after { content: "把整页放进框里"; position: absolute; left: 50%; top: 10px; transform: translateX(-50%); font-size: 13px; color: rgba(255,255,255,.85); background: rgba(0,0,0,.35); padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
@media (max-width: 860px) { .cam-wrap { height: min(70vh, 720px); } }
.cand { padding: 12px 14px; border-radius: 14px; margin: 8px 0; display: flex; align-items: center; gap: 12px; }
.cand b { font-family: var(--serif); font-weight: 400; font-size: 20px; }
.cand .sc { font-size: 12px; color: var(--ink-faint); }

/* ── 课文朗读播放器（玻璃风格） ── */
.lp { padding: 14px 16px; border-radius: 16px; margin: 8px 0 10px; }
.lp-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.lp-head b { font-family: var(--serif); font-weight: 400; font-size: 17px; }
.lp-meta { flex: 1; font-size: 12.5px; color: var(--ink-soft); }
.lp-bar { position: relative; height: 10px; border-radius: 999px; background: linear-gradient(180deg, hsl(var(--h) 30% 88%), hsl(var(--h) 30% 94%)); box-shadow: inset 0 1px 3px hsl(var(--h) 30% 60% / .35), inset 0 -1px 0 #fff; cursor: pointer; touch-action: none; }
.lp-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; border-radius: 999px; background: linear-gradient(180deg, hsl(var(--h) var(--s) 62%), var(--day-deep)); box-shadow: inset 0 1px 0 rgba(255,255,255,.6); }
.lp-knob { position: absolute; top: 50%; left: 0; width: 20px; height: 20px; margin: -10px 0 0 -10px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fff 0 20%, hsl(var(--h) var(--s) 85%) 70%, hsl(var(--h) var(--s) 70%)); box-shadow: 0 3px 8px -2px rgba(0,0,0,.35), inset 0 -2px 4px hsl(var(--h) var(--s) 60% / .5); pointer-events: none; }
.lp-time { display: flex; justify-content: space-between; font: 12px/1.6 "IBM Plex Mono", ui-monospace, monospace; color: var(--ink-soft); margin: 4px 2px 6px; }
.lp-ctrls { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.lp-ctrls .gb.on { box-shadow: 0 0 0 3px hsl(var(--h) var(--s) 60% / .45), inset 0 1px 0 #fff; }
.lp-text { margin-top: 10px; font-family: var(--serif); font-size: 15.5px; line-height: 1.9; color: var(--ink-soft); max-height: 160px; overflow: auto; padding-right: 4px; }
.lp-text i { font-style: normal; cursor: pointer; border-radius: 4px; padding: 0 2px; }
.lp-text i.on { background: hsl(var(--h) var(--s) 88%); color: var(--ink); }

.chip.access { background: rgba(255,255,255,.7); color: var(--ink-faint); font-size: 12px; }
.chip.access.paid { color: #8a5a10; background: linear-gradient(180deg,#fff2c8,#f6dc8e); border-color: #e0b95a; }

/* ── 正门：课文地图 + 作家图鉴 ── */
.gate { margin-bottom: 16px; }
.map-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.map-head h4 { margin: 0; }
.map-grid { display: grid; grid-template-columns: 1.7fr 1fr; gap: 14px; margin-top: 8px; }
.map-main svg, .map-side svg { width: 100%; height: auto; display: block; border-radius: 14px; background: linear-gradient(160deg, hsl(var(--h) 40% 96% / .9), hsl(var(--h) 35% 90% / .8)); box-shadow: inset 0 1px 0 #fff; }
.map-side { display: flex; flex-direction: column; gap: 10px; }
#map-card .sphere { fill: hsl(var(--h) 45% 93%); }
#map-card .land-bg path { fill: hsl(var(--h) 15% 86%); stroke: #fff; stroke-width: .5; }
#map-card .land.cn { fill: hsl(var(--h) 35% 78%); stroke: #fff; stroke-width: 1; }
#map-card .pin { cursor: pointer; }
#map-card .pin text { font-size: 12.5px; fill: var(--ink); paint-order: stroke; stroke: rgba(255,255,255,.9); stroke-width: 3px; font-family: var(--serif); }
#map-card .pin.off text { fill: var(--ink-faint); }
#map-card .pin .core { fill: #b9bcc4; stroke: #fff; stroke-width: 1.5; }
#map-card .pin .halo { fill: transparent; }
#map-card .pin.lit .core { fill: #c2412d; }
#map-card .pin.lit .halo { fill: rgba(194,65,45,.18); }
#map-card .pin.today .core { fill: #d9a83a; }
#map-card .pin.today .halo { fill: rgba(217,168,58,.3); animation: pinpulse 1.6s ease-in-out infinite; transform-origin: center; transform-box: fill-box; }
@keyframes pinpulse { 0%,100% { transform: scale(.8); opacity: .8 } 50% { transform: scale(1.3); opacity: .3 } }
#map-card .pin:hover .core { stroke-width: 3; }
.map-pop { padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,.82); border: 1px solid #fff; }
.map-pop b { font-family: var(--serif); font-size: 18px; margin-right: 8px; }
.map-pop .blurb { font-size: 14px; line-height: 1.7; margin: 6px 0; color: var(--ink); }
.map-pop .quote { font-family: var(--kai); font-size: 15px; color: var(--day-ink); margin: 4px 0 8px; }
.acard-reveal { display: flex; gap: 16px; justify-content: center; margin: 14px 0; perspective: 900px; }
.acard { width: 150px; border-radius: 14px; text-align: center; }
.acard.flip { position: relative; height: 210px; transition: transform .8s; transform-style: preserve-3d; }
.acard.flip .face { position: absolute; inset: 0; backface-visibility: hidden; border-radius: 14px; overflow: hidden; background: #fff; border: 1px solid #fff; box-shadow: 0 10px 24px -14px rgba(0,0,0,.4); display: flex; flex-direction: column; align-items: center; justify-content: center; }
.acard.flip .back { background: linear-gradient(160deg, hsl(var(--h) var(--s) 88%), hsl(var(--h) var(--s) 70%)); font-family: var(--serif); font-size: 54px; color: #fff; }
.acard.flip .front { transform: rotateY(180deg); }
.acard.flip.open { transform: rotateY(180deg); }
.acard img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; }
.acard b { font-family: var(--serif); font-size: 15px; display: block; margin-top: 6px; }
.acard small { color: var(--ink-faint); font-size: 11px; display: block; margin-bottom: 6px; }
.acard-line { font-family: var(--kai); font-size: 17px; text-align: center; min-height: 28px; }
.acard-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(112px, 1fr)); gap: 12px; margin: 12px 0; }
.acard-grid .acard { width: auto; background: rgba(255,255,255,.8); border: 1px solid #fff; overflow: hidden; position: relative; }
.acard-grid .acard.got { cursor: pointer; }
.acard-grid .acard.off { opacity: .75; }
.acard .sil { aspect-ratio: 1; display: grid; place-items: center; font-family: var(--serif); font-size: 40px; color: #fff; background: linear-gradient(160deg, #cfd3da, #aeb4bf); }
.acard .new { position: absolute; top: 6px; right: 6px; font-style: normal; font-size: 11px; background: #c2412d; color: #fff; border-radius: 6px; padding: 1px 6px; }
.acard-detail { display: grid; grid-template-columns: 160px 1fr; gap: 16px; padding: 14px; border-radius: 14px; background: rgba(255,255,255,.85); border: 1px solid #fff; margin-top: 8px; }
.acard-detail img { width: 100%; border-radius: 12px; }
.acard-detail b { font-family: var(--serif); font-size: 20px; }
.acard-detail small { color: var(--ink-faint); margin-left: 8px; }
.acard-detail p { font-size: 15px; line-height: 1.7; margin: 6px 0; }
@media (max-width: 760px) { .map-grid { grid-template-columns: 1fr; } .acard-detail { grid-template-columns: 1fr; } }

/* ── 跟读影子 / 金句本 ── */
.sh-prog { display: flex; align-items: center; gap: 4px; margin: 6px 0 12px; }
.sh-prog i { flex: 1; height: 6px; border-radius: 3px; background: rgba(255,255,255,.7); border: 1px solid #fff; }
.sh-prog i.done { background: var(--day-deep); } .sh-prog i.now { background: hsl(var(--h) var(--s) 75%); }
.sh-prog span { font-size: 12px; color: var(--ink-faint); margin-left: 6px; }
.sh-sent { font-family: var(--kai); font-size: 26px; line-height: 1.8; margin: 8px 0 14px; letter-spacing: .04em; }
.sh-sent .ok { color: var(--ink); } .sh-sent .miss { color: #c2412d; border-bottom: 3px solid #c2412d; }
.sh-card { padding: 14px 18px; border-radius: 14px; background: rgba(255,255,255,.85); border: 1px solid #fff; margin: 10px 0; }
.sh-card ul { margin: 0 0 8px; padding-left: 20px; font-size: 15px; line-height: 1.8; }
.sh-next { margin: 0; font-size: 15px; } .sh-next b { color: var(--day-ink); margin-right: 8px; font-weight: 600; }
.gold-list { display: grid; gap: 10px; margin: 10px 0; }
.gold { padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,.82); border: 1px solid #fff; }
.gold.due { border-color: #d9a83a; box-shadow: 0 0 0 2px rgba(217,168,58,.25); }
.gold .gtext { font-family: var(--kai); font-size: 19px; margin: 0 0 4px; }
.gold .btns { margin-top: 6px; }

/* ── 课后甜点 ── */
.ds-steps { display: flex; gap: 6px; margin: 8px 0 14px; }
.ds-steps span { flex: 1; text-align: center; font-size: 12.5px; padding: 6px 4px; border-radius: 999px; background: rgba(255,255,255,.6); color: var(--ink-faint); border: 1px solid #fff; }
.ds-steps span.now { background: var(--day-deep); color: #fff; font-weight: 600; }
.ds-steps span.done { color: var(--day-ink); }
.ds-pic { height: 150px; border-radius: 14px; display: grid; place-items: center; background-size: cover; background-position: center; box-shadow: inset 0 1px 0 rgba(255,255,255,.5), 0 10px 20px -14px rgba(0,0,0,.45); }
.ds-pic span { font-family: var(--kai); font-size: 44px; color: #fff; text-shadow: 0 2px 8px rgba(0,0,0,.4); }
.ds-hook .ds-pic { height: 220px; }
.ds-big { font-family: var(--kai); font-size: 21px; line-height: 1.7; margin: 12px 0 8px; color: var(--ink); }
.ds-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; }
.ds-card { padding: 10px; border-radius: 16px; }
.ds-text { font-size: 15px; line-height: 1.75; margin: 8px 4px 2px; }
.ds-letter { font-family: var(--kai); font-size: 17px; line-height: 1.8; margin: 8px 4px 2px; }
.ds-video { margin-bottom: 12px; }
.ds-say { display: flex; gap: 8px; margin: 10px 0; }
.ds-say input { flex: 1; font: inherit; font-size: 16px; font-family: var(--kai); padding: 10px 14px; border-radius: 14px; border: 1px solid #fff; background: rgba(255,255,255,.85); box-shadow: inset 0 1px 0 #fff, inset 0 -2px 5px hsl(var(--h) 35% 70% / .35); color: var(--ink); }
.ds-say input:focus { outline: 3px solid hsl(var(--h) var(--s) 60% / .4); }
.bubbles { display: flex; gap: 10px; flex-wrap: wrap; }
.bub.on { color: #fff; text-shadow: 0 1px 1px rgba(0,0,0,.35); background: radial-gradient(120% 80% at 50% -20%, rgba(255,255,255,.5), rgba(255,255,255,0) 60%), linear-gradient(180deg, hsl(var(--h) var(--s) calc(var(--lb) + 14%)), var(--day-deep)); }
.ds-reveal { font-family: var(--kai); font-size: 17px; line-height: 1.8; padding: 10px 14px; border-radius: 12px; background: hsl(var(--h) var(--s) 92% / .8); margin: 10px 0; }
.ds-flips { display: flex; gap: 14px; flex-wrap: wrap; margin: 10px 0; }
.flip { width: 90px; height: 112px; border-radius: 14px; border: 1px solid #fff; background: linear-gradient(150deg, #fff, hsl(var(--h) var(--s) 93%) 55%, hsl(var(--h) var(--s) 88%)); display: grid; place-items: center; cursor: pointer; position: relative; box-shadow: inset 0 1px 0 #fff, 0 8px 16px -10px hsl(var(--h) 40% 40% / .5); transition: transform .3s; }
.flip .face { font-family: var(--kai); font-size: 40px; }
.flip small { position: absolute; bottom: 6px; font-size: 11px; color: var(--ink-faint); }
.flip.done { background: linear-gradient(150deg, #fff, #fff2c8); border-color: hsl(45 80% 70%); transform: rotateY(360deg); }
.flip:hover { transform: translateY(-3px); }
.tutor-line { margin-top: 10px; }
.tutor { display: flex; gap: 10px; align-items: flex-start; margin: 8px 0; }
.tutor .av { width: 32px; height: 32px; border-radius: 50%; background: var(--day-deep); color: #fff; display: grid; place-items: center; font-size: 14px; flex: none; font-family: var(--kai); }
.tutor p { margin: 0; background: rgba(255,255,255,.85); border: 1px solid #fff; border-radius: 12px; padding: 8px 12px; font-size: 15px; max-width: 80%; }
.tutor p.me { background: var(--day-deep); color: #fff; border-color: transparent; margin-left: auto; }
.ds-chat { max-height: 40vh; overflow: auto; padding: 4px; }
.ds-after { text-align: center; padding: 10px 0; }
.ds-line { font-family: var(--kai); font-size: 20px; color: var(--day-ink); }

/* ── 弹层：精读 / 荐书 / 目录 / 推荐阅读 ── */
#modal { position: fixed; inset: 0; z-index: 50; background: hsl(var(--h) 30% 20% / .35); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; padding: 20px; }
#modal .panel { width: min(960px, 100%); max-height: 92vh; overflow: auto; border-radius: 22px; padding: 24px 28px; }
#modal .panel h2 { font-family: var(--serif); font-weight: 400; font-size: 26px; margin: 0 0 4px; }
#modal .panel .close { position: sticky; top: 0; float: right; z-index: 2; }
/* 弹层里的小卡不再叠第二层磨砂：嵌套 backdrop-filter 在滚动容器里会整块白掉（实测截到过），
   弱设备也吃不消。弹层本身那一层磨砂够用，里面的卡改成实一点的白。 */
#modal .panel .glass { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(255,255,255,.84); }
#modal .panel { background: linear-gradient(135deg, rgba(255,255,255,.9), rgba(255,255,255,.78)); }
.reader { display: grid; grid-template-columns: 1.3fr 1fr; gap: 22px; }
.paper { font-family: var(--serif); font-size: 18px; line-height: 2.1; letter-spacing: .3px; padding: 18px 22px; border-radius: 14px; background:
  repeating-linear-gradient(180deg, transparent 0 36.8px, hsl(150 25% 75% / .45) 36.8px 37.8px), rgba(255,255,255,.75); border: 1px solid #fff; }
.paper p { margin: 0 0 10px; text-indent: 2em; }
.paper p.anchor { background: hsl(var(--h) var(--s) 85% / .7); border-radius: 6px; box-shadow: 0 0 0 4px hsl(var(--h) var(--s) 85% / .7); animation: glow 1.2s ease-out; }
@keyframes glow { from { background: hsl(var(--h) var(--s) 70% / .9) } }
.paper .vw { color: var(--day-ink); border-bottom: 2px dotted var(--day-deep); cursor: pointer; font-family: var(--kai); font-size: 19px; }
.vcard { font-size: 13.5px; padding: 12px 14px; border-radius: 12px; margin-top: 10px; }
.vcard b { font-family: var(--kai); font-size: 20px; color: var(--day-ink); margin-right: 8px; }
.qs .q { padding: 14px 16px; border-radius: 16px; margin-bottom: 12px; }
.qs .q .qt { font-weight: 600; margin: 0 0 4px; }
.qs .q .skill { font-size: 11.5px; color: var(--ink-faint); letter-spacing: .06em; }
.qs .hint { font-size: 13.5px; color: var(--day-ink); margin-top: 6px; padding: 8px 10px; border-radius: 10px; background: hsl(var(--h) var(--s) 92% / .8); }
.qs .hint.ans { color: var(--ink); background: hsl(150 40% 92%); }
.result { font-family: var(--serif); font-size: 22px; margin: 6px 0 12px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 14px; }
.grid .bk { text-align: center; cursor: pointer; text-decoration: none; color: var(--ink); }
.grid .bk img { width: 100%; aspect-ratio: 3/4.2; object-fit: cover; border-radius: 8px; box-shadow: 0 10px 20px -10px rgba(0,0,0,.5); background: linear-gradient(160deg, var(--day), var(--day2)); transition: transform .3s; }
.grid .bk:hover img { transform: translateY(-4px); }
.grid .bk small { display: block; font-size: 12.5px; margin-top: 6px; line-height: 1.3; }
.grid .bk .tv { display: inline-block; font-size: 11px; padding: 1px 6px; border-radius: 6px; background: var(--day-deep); color: #fff; margin-top: 3px; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 14px; }
video.tr { width: 100%; max-height: 56vh; border-radius: 14px; background: #000; }
.toc .unit { margin: 10px 0 14px; }
.toc .unit h5 { font-family: var(--serif); font-weight: 400; font-size: 17px; margin: 0 0 6px; color: var(--day-ink); }
.toc .les { display: flex; gap: 10px; align-items: baseline; padding: 6px 8px; border-radius: 10px; }
.toc .les:hover { background: rgba(255,255,255,.7); }
.toc .les b { font-weight: 500; min-width: 6.5em; }
.toc .les small { color: var(--ink-soft); font-size: 12.5px; }
.toc .les .zi { font-family: var(--kai); color: var(--ink); }
.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 60; padding: 10px 18px; border-radius: 999px; font-size: 14px; color: var(--ink); animation: up .3s ease-out; }
@keyframes up { from { transform: translate(-50%, 12px); opacity: 0 } }

@media (max-width: 860px) {
  .today, .bottom, .reader { grid-template-columns: minmax(0, 1fr); }
  .doors { grid-template-columns: repeat(5, minmax(118px, 1fr)); overflow-x: auto; padding-bottom: 6px; }
  header.yw { padding: 10px 12px; gap: 8px; }
  header.yw nav { display: none; }
  header.yw .brand { white-space: nowrap; font-size: 18px; letter-spacing: 1px; gap: 6px; }
  header.yw .brand img { width: 28px; height: 28px; }
  .chip { white-space: nowrap; font-size: 12px; padding: 4px 9px; }
  header.yw select { font-size: 12px; padding: 5px 9px; max-width: 5.5em; }
  .btns { gap: 8px; }
  .gb.big { font-size: 15px; padding: 11px 18px; }
  main.yw { padding: 14px 14px 50px; }
  .card { padding: 16px; }
  .card h3 { font-size: 24px; }
  #modal { padding: 8px; }
  #modal .panel { padding: 16px; border-radius: 16px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }