* { margin:0; padding:0; box-sizing:border-box; }
:root{
  --ink:#2b2f38; --ink-soft:#5b6272; --line:#e6e2da;
  --paper:#fbf9f5; --paper2:#fff; --shadow:0 10px 30px rgba(60,50,40,.10);
  --accent:#C2703D; --accentd:#a86236; --radius:18px;
  --k-koujue:#c9962b; --k-joke:#7b5ea7; --k-cheer:#3f9463; --k-heart:#c9607f; --k-warn:#c0554b;
}
html,body{ height:100%; }
body{
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  color:var(--ink); background:var(--paper); line-height:1.75; -webkit-font-smoothing:antialiased;
}
img{ display:block; max-width:100%; }
button{ font-family:inherit; cursor:pointer; border:none; background:none; color:inherit; }
a{ color:inherit; text-decoration:none; }

/* ---------- 首页 ---------- */
.hero{
  position:relative; min-height:64vh; display:flex; flex-direction:column; justify-content:center;
  padding:8vh 6vw 6vh; overflow:hidden; background:#f3ede4;
}
.hero-bg{ position:absolute; inset:0; background-size:cover; background-position:68% 32%; }
.hero-bg::after{
  content:""; position:absolute; inset:0;
  background:
    linear-gradient(90deg, rgba(255,252,247,.96) 0%, rgba(255,252,247,.86) 38%, rgba(255,252,247,.34) 72%, rgba(255,252,247,.55) 100%),
    linear-gradient(180deg, rgba(255,252,247,.25) 0%, rgba(255,252,247,.55) 70%, var(--paper) 100%);
}
.hero-inner{ position:relative; z-index:2; max-width:1100px; margin:0 auto; width:100%; }
.hero h1{ font-size:clamp(30px,5vw,54px); letter-spacing:2px; font-weight:800; }
.hero h1 span{ color:var(--accent); }
.hero .sub{ margin-top:14px; color:var(--ink-soft); font-size:clamp(13px,1.6vw,16px); }
.hero .meta{ margin-top:22px; display:flex; flex-wrap:wrap; gap:10px; }
.pill{
  background:rgba(255,255,255,.8); border:1px solid var(--line); border-radius:999px;
  padding:6px 14px; font-size:13px; color:var(--ink-soft); backdrop-filter:blur(6px);
}
.pill b{ color:var(--ink); }

.bar{ width:100%; height:10px; border-radius:999px; background:#eae4da; overflow:hidden; }
.bar > i{ display:block; height:100%; background:linear-gradient(90deg,#e5a34a,#c2703d); border-radius:999px; transition:width .4s; }
.hero-progress{ margin-top:26px; max-width:520px; }
.hero-progress .lbl{ display:flex; justify-content:space-between; font-size:13px; color:var(--ink-soft); margin-bottom:8px; }

.wrap{ max-width:1180px; margin:0 auto; padding:26px 5vw 120px; }
.sec-title{ display:flex; align-items:baseline; gap:12px; margin:34px 0 18px; }
.sec-title h2{ font-size:20px; letter-spacing:1px; }
.sec-title .n{ font-size:13px; color:var(--ink-soft); }

.cards{ display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); gap:18px; }
.card{
  position:relative; border-radius:var(--radius); overflow:hidden; background:var(--paper2);
  box-shadow:var(--shadow); border:1px solid var(--line); display:flex; flex-direction:column;
  transition:transform .18s, box-shadow .18s;
}
.card:hover{ transform:translateY(-4px); box-shadow:0 16px 40px rgba(60,50,40,.16); }
.card-img{ height:140px; background-size:cover; background-position:center; position:relative; }
.card-img::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.72)); }
.card-stripe{ position:absolute; left:0; top:0; bottom:0; width:7px; z-index:3; }
.card-body{ padding:16px 18px 18px; position:relative; z-index:2; }
.card-body h3{ font-size:17px; margin-bottom:6px; }
.card-body .no{ font-size:12px; color:#fff; background:var(--accentd,var(--accent)); border-radius:8px; padding:2px 8px; margin-right:8px; }
.card-body .desc{ font-size:13px; color:var(--ink-soft); min-height:38px; }
.card-foot{ margin-top:12px; display:flex; align-items:center; gap:10px; font-size:12px; color:var(--ink-soft); }
.card-foot .bar{ flex:1; height:7px; }
.card-foot .bar > i{ background:var(--accent); }
.card .icon{ position:absolute; right:14px; top:14px; font-size:22px; z-index:3;
  background:rgba(255,255,255,.85); width:40px; height:40px; border-radius:12px; display:grid; place-items:center; }

/* ---------- 小节页 ---------- */
.banner{ position:relative; min-height:38vh; display:flex; align-items:flex-end; padding:60px 6vw 26px; overflow:hidden; }
.banner-bg{ position:absolute; inset:0; background-size:cover; background-position:center 26%; }
.banner-bg::after{ content:""; position:absolute; inset:0;
  background:
    linear-gradient(90deg, rgba(255,253,250,.95) 0%, rgba(255,253,250,.78) 42%, rgba(255,253,250,.30) 78%, rgba(255,253,250,.60) 100%),
    linear-gradient(180deg, rgba(255,253,250,.30) 0%, rgba(255,253,250,.60) 65%, var(--paper) 100%); }
.banner-inner{ position:relative; z-index:2; max-width:900px; margin:0 auto; width:100%; }
.crumb{ font-size:13px; color:var(--ink-soft); display:flex; align-items:center; gap:8px; margin-bottom:10px; }
.crumb .back{ border:1px solid var(--line); background:rgba(255,255,255,.8); border-radius:999px; padding:4px 12px; }
.crumb .back:hover{ background:#fff; }
.banner h1{ font-size:clamp(22px,3.4vw,34px); line-height:1.35; }
.banner h1 .num{ color:var(--accent); }
.banner .who{ margin-top:10px; font-size:13px; color:var(--ink-soft); }

.shell{ max-width:900px; margin:0 auto; padding:10px 5vw 140px; }
.chips{ display:flex; flex-wrap:wrap; gap:8px; margin:14px 0 22px; }
.chip{
  border:1px solid var(--line); background:var(--paper2); border-radius:999px; padding:6px 13px;
  font-size:12.5px; color:var(--ink-soft); transition:.15s;
}
.chip:hover{ border-color:var(--accent); color:var(--accent); }
.chip.on{ background:var(--accentd,var(--accent)); border-color:var(--accentd,var(--accent)); color:#fff; }

.toolbar{ display:flex; flex-wrap:wrap; gap:10px; align-items:center; margin-bottom:18px; }
.tbtn{ border:1px solid var(--line); background:var(--paper2); border-radius:12px; padding:7px 13px; font-size:13px; color:var(--ink-soft); }
.tbtn.on{ background:var(--accentd,var(--accent)); border-color:var(--accentd,var(--accent)); color:#fff; }
.tbtn:hover{ border-color:var(--accent); }

.item{
  position:relative; background:var(--paper2); border:1px solid var(--line); border-radius:14px;
  padding:14px 16px 14px 46px; margin-bottom:12px; transition:.15s; cursor:pointer;
}
.item:hover{ box-shadow:var(--shadow); }
.item .idx{
  position:absolute; left:12px; top:14px; width:24px; height:24px; border-radius:8px;
  background:var(--accentd,var(--accent)); color:#fff; font-size:12.5px; display:grid; place-items:center; font-weight:700;
}
.item .txt{ font-weight:650; font-size:15.5px; }
.item .subs{ margin-top:10px; display:flex; flex-direction:column; gap:7px; }
.sub{ position:relative; padding-left:20px; font-size:14px; color:var(--ink); }
.sub::before{ content:""; position:absolute; left:6px; top:11px; width:6px; height:6px; border-radius:50%; background:var(--accent); opacity:.55; }
.sub.lv2{ margin-left:16px; color:#3d434f; font-size:13.6px; }
.sub.lv2::before{ background:var(--accent); opacity:.35; }
.sub.lv3{ margin-left:34px; color:var(--ink-soft); font-size:13.2px; }
.sub.lv3::before{ background:#c9c3b8; }
.item.done{ background:linear-gradient(180deg,rgba(255,255,255,1),rgba(245,247,242,1)); border-color:#cfe0d2; }
.item.done .idx{ background:#3f9463; }
.item.done::after{ content:"已掌握"; position:absolute; right:14px; top:14px; font-size:11px; color:#3f9463; }
.item .lock{ display:none; }
body.quiz .item .subs{ filter:blur(6px); opacity:.5; transition:.2s; }
body.quiz .item:hover .subs{ filter:none; opacity:1; }

/* 批注气泡 */
.note{
  position:relative; margin:16px 0 18px; border-radius:16px; padding:14px 18px 14px 56px;
  border:1px dashed var(--nc); background:color-mix(in srgb, var(--nc) 8%, #fff);
  font-size:14px; color:#3a3f49;
}
.note .tag{
  position:absolute; left:16px; top:14px; width:30px; height:30px; border-radius:10px;
  background:var(--nc); color:#fff; display:grid; place-items:center; font-size:13px;
}
.note.k-koujue{ --nc:var(--k-koujue); } .note.k-joke{ --nc:var(--k-joke); }
.note.k-cheer{ --nc:var(--k-cheer); } .note.k-heart{ --nc:var(--k-heart); }
.note.k-warn{ --nc:var(--k-warn); }
.note .who{ display:block; font-size:11.5px; color:var(--nc); font-weight:700; margin-bottom:3px; letter-spacing:.5px; }
.note.head{ margin-top:6px; }
.note.ene img{ position:absolute; left:12px; top:12px; width:38px; height:38px; border-radius:12px; object-fit:cover; border:2px solid #fff; box-shadow:0 2px 8px rgba(0,0,0,.12); }

/* ---------- 番茄钟 ---------- */
.pomo{
  position:fixed; right:22px; bottom:22px; z-index:50; width:290px;
  background:rgba(255,255,255,.94); backdrop-filter:blur(10px);
  border:1px solid var(--line); border-radius:20px; box-shadow:0 16px 40px rgba(70,55,40,.18);
  overflow:hidden; transition:transform .25s;
}
.pomo-head{ display:flex; align-items:center; gap:8px; padding:10px 14px; cursor:pointer; background:var(--accentd,var(--accent)); color:#fff; }
.pomo-head .t{ font-size:13.5px; font-weight:700; letter-spacing:.5px; }
.pomo-head .mini{ margin-left:auto; font-size:11.5px; opacity:.9; }
.pomo-body{ padding:14px; }
.pomo.collapsed .pomo-body{ display:none; }
.pomo-img{ height:96px; border-radius:14px; background-size:cover; background-position:center; margin-bottom:12px; }
.pomo-time{ font-size:44px; font-weight:800; text-align:center; letter-spacing:2px; font-variant-numeric:tabular-nums; }
.pomo-time.run{ color:var(--accent); }
.pomo-state{ text-align:center; font-size:12.5px; color:var(--ink-soft); margin-top:2px; min-height:20px; }
.pomo-btns{ display:flex; gap:8px; margin-top:12px; }
.pomo-btns button{ flex:1; border-radius:12px; padding:9px 0; font-size:13.5px; border:1px solid var(--line); }
.pomo-btns .main{ background:var(--accentd,var(--accent)); border-color:var(--accentd,var(--accent)); color:#fff; font-weight:700; }
.pomo-presets{ display:flex; gap:6px; margin-top:10px; }
.pomo-presets button{ flex:1; font-size:12px; border:1px solid var(--line); border-radius:10px; padding:5px 0; color:var(--ink-soft); }
.pomo-presets button.on{ background:var(--accentd,var(--accent)); border-color:var(--accentd,var(--accent)); color:#fff; }
.pomo-foot{ margin-top:10px; font-size:12px; color:var(--ink-soft); text-align:center; }
.pomo.flash{ animation:flash .8s ease-in-out 4; }
@keyframes flash{ 50%{ box-shadow:0 0 0 8px rgba(194,112,61,.28); } }

/* ---------- 底部心声 ---------- */
.foot{ max-width:900px; margin:40px auto 0; padding:0 5vw; }
.foot-card{
  background:linear-gradient(135deg,#fff6ee,#fdf2f6); border:1px solid #f0e2d8; border-radius:20px;
  padding:20px 22px 20px 92px; position:relative; font-size:14px; color:#4a4148; min-height:96px;
}
.foot-card img{ position:absolute; left:18px; top:20px; width:58px; height:58px; border-radius:16px; object-fit:cover; border:2px solid #fff; }
.foot-card .who{ font-size:12px; color:var(--k-heart); font-weight:700; margin-bottom:4px; letter-spacing:1px; }
.foot-note{ text-align:center; color:#a9a29a; font-size:12px; margin:26px 0 0; }

@media (max-width:720px){
  .pomo{ right:10px; bottom:10px; width:min(92vw,300px); }
  .pomo-time{ font-size:38px; }
  .item{ padding-left:42px; }
  .banner{ min-height:26vh; padding-bottom:18px; }
}
@media print{ .pomo,.toolbar{ display:none; } }

/* wide screen: shift text column left so the pomodoro does not cover it */
@media (min-width:1300px){
  .shell, .foot{ margin-left:max(24px, calc(50% - 660px)); margin-right:auto; }
}

/* 全节背完的奖励条 */
.done-all{ display:flex; gap:16px; align-items:center; margin:18px 0 6px; padding:14px 18px; border-radius:18px;
  border:1px solid color-mix(in srgb, var(--accent) 35%, #fff);
  background:linear-gradient(135deg,#fff8f0,#fdf1f6); font-size:14px; color:#4a4148; }
.done-all img{ width:126px; height:88px; object-fit:cover; border-radius:14px; flex:0 0 auto; }
.done-all.hide{ display:none; }

/* ==========================================================================
   2026-10-15 加：转横屏 · 页面背景（亮／深／自定义）· 字号 · 番茄钟自定义时间
   照题库那套搬过来的，但背记台本来是浅色的，深色这套覆盖是自己写的。
   ========================================================================== */

/* 字号：整页一起 zoom（字、条目、按钮都跟着变）。抽屉和番茄钟在 #app 外面，单独跟上 */
#app, .pomo, .drawer, .toast{ zoom:var(--fs,1); }

/* ---------- 右上角两个按钮 ---------- */
.topbtns{ position:fixed; right:16px; top:14px; z-index:60; display:flex; gap:8px; }
.topbtns .tbtn{ background:rgba(255,255,255,.88); backdrop-filter:blur(8px); box-shadow:0 4px 14px rgba(60,50,40,.12); }
.tbtn.mini{ font-size:12px; padding:5px 10px; border-radius:10px; }
.hidefile{ display:none; }

/* ---------- 外观抽屉 ---------- */
.drawer{ position:fixed; right:16px; top:58px; z-index:62; width:min(92vw,392px); max-height:calc(100vh - 96px);
  overflow:auto; display:none; background:rgba(255,255,255,.97); backdrop-filter:blur(10px);
  border:1px solid var(--line); border-radius:20px; box-shadow:0 18px 44px rgba(70,55,40,.22); }
.drawer.on{ display:block; }
.drawer-head{ display:flex; align-items:center; gap:8px; padding:11px 14px; background:var(--accentd,var(--accent)); color:#fff;
  position:sticky; top:0; z-index:2; }
.drawer-head .t{ font-size:13.5px; font-weight:700; letter-spacing:.5px; }
.drawer-head .mini{ margin-left:auto; font-size:11.5px; opacity:.92; cursor:pointer; }
.drawer-body{ padding:13px; }
.card2{ border:1px solid var(--line); border-radius:16px; padding:13px 14px; background:#fff; margin-bottom:12px; }
.card2:last-child{ margin-bottom:0; }
.card2 h3{ font-size:15px; margin-bottom:10px; }
.card2 .row{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.card2 .hint{ font-size:12px; color:var(--ink-soft); margin-top:8px; line-height:1.65; }
.card2 input[type=color]{ width:42px; height:30px; padding:2px; border:1px solid var(--line); border-radius:9px; background:#fff; }
.card2 input[type=range]{ flex:1 1 110px; max-width:200px; accent-color:var(--accent); }
.chips{ display:flex; flex-wrap:wrap; gap:7px; }
.chip2{ border:1px solid var(--line); background:#fff; border-radius:999px; padding:6px 12px; font-size:12.5px;
  color:var(--ink-soft); transition:.15s; }
.chip2:hover{ border-color:var(--accent); }
.chip2.on{ background:var(--accentd,var(--accent)); border-color:var(--accentd,var(--accent)); color:#fff; }
.chip2.swatch{ display:inline-flex; align-items:center; gap:7px; }
.chip2.swatch::before{ content:''; width:13px; height:13px; border-radius:4px; background:var(--sw,#888); border:1px solid rgba(0,0,0,.12); }
.tag{ display:inline-block; border:1px solid var(--line); border-radius:999px; padding:3px 9px; font-size:12px; color:var(--ink-soft); }
.bg-prev{ margin-top:11px; border-radius:12px; border:1px solid var(--line); min-height:74px; padding:12px;
  display:flex; align-items:center; justify-content:center; background:#fbf9f5; }
.bg-prev .demo{ background:#fff; border:1px solid var(--line); border-radius:10px; padding:7px 11px; font-size:12.5px; color:var(--ink); }
.bg-prev.dark .demo{ background:#1a1f29; color:#e9e6e0; border-color:#2d323d; }

/* ---------- 页面背景 ---------- */
/* 亮色（默认）不用挂类，就是原来那层米白；自定义色／图只换窗外那层底 */
body.bg-color{ background:var(--bg,#f2eee2); }
body.bg-img{ background:transparent; }
body.bg-img::before{ content:''; position:fixed; inset:0; z-index:-2;
  background-image:var(--bg-img); background-position:center center; background-size:cover; background-repeat:no-repeat; }
body.bg-img::after{ content:''; position:fixed; inset:0; z-index:-1; pointer-events:none; background:rgba(0,0,0,var(--bdim,.3)); }
/* 深色：整套变量翻过来，再单独收拾几块写死颜色的地方 */
body.bg-dark{
  --ink:#e9e6e0; --ink-soft:#a7a39b; --line:#2d323d; --paper:#12151d; --paper2:#1a1f29;
  --shadow:0 10px 30px rgba(0,0,0,.42);
  background:#12151d; color:var(--ink);
}
body.bg-dark .hero{ background:#12151d; }
body.bg-dark .hero-bg::after{ background:
  linear-gradient(90deg, rgba(18,21,29,.96) 0%, rgba(18,21,29,.86) 38%, rgba(18,21,29,.36) 72%, rgba(18,21,29,.58) 100%),
  linear-gradient(180deg, rgba(18,21,29,.26) 0%, rgba(18,21,29,.58) 70%, #12151d 100%); }
body.bg-dark .banner-bg::after{ background:
  linear-gradient(90deg, rgba(16,19,26,.96) 0%, rgba(16,19,26,.80) 42%, rgba(16,19,26,.32) 78%, rgba(16,19,26,.62) 100%),
  linear-gradient(180deg, rgba(16,19,26,.30) 0%, rgba(16,19,26,.62) 65%, #12151d 100%); }
body.bg-dark .pill{ background:rgba(255,255,255,.07); border-color:var(--line); }
body.bg-dark .bar{ background:#262b35; }
body.bg-dark .card-img::after{ background:linear-gradient(180deg,rgba(18,21,29,.12),rgba(18,21,29,.74)); }
body.bg-dark .card .icon{ background:rgba(255,255,255,.12); }
body.bg-dark .crumb .back{ background:rgba(255,255,255,.08); border-color:var(--line); }
body.bg-dark .crumb .back:hover{ background:rgba(255,255,255,.15); }
body.bg-dark .chip:not(.on), body.bg-dark .tbtn:not(.on){ background:var(--paper2); border-color:var(--line); color:var(--ink-soft); }
body.bg-dark .topbtns .tbtn{ background:rgba(20,24,32,.88); }
body.bg-dark .chip2:not(.on){ background:var(--paper2); border-color:var(--line); color:var(--ink-soft); }
body.bg-dark .card2{ background:var(--paper2); }
body.bg-dark .drawer{ background:rgba(20,24,32,.97); }
body.bg-dark .bg-prev{ background:#12151d; }
body.bg-dark .bg-prev .demo{ background:var(--paper2); border-color:var(--line); color:var(--ink); }
body.bg-dark .sub.lv2{ color:#cfd3da; }
body.bg-dark .sub.lv3{ color:var(--ink-soft); }
body.bg-dark .sub::before{ background:var(--accent); opacity:.5; }
body.bg-dark .item.done{ background:linear-gradient(180deg,#1c222c,#1a2028); border-color:#31503f; }
body.bg-dark .item.done::after{ color:#6fc48f; }
body.bg-dark .note{ background:color-mix(in srgb, var(--nc) 15%, #171b24); color:#dfe2e8;
  border-color:color-mix(in srgb, var(--nc) 45%, #2d323d); }
body.bg-dark .note.k-koujue{ background:color-mix(in srgb, var(--k-koujue) 15%, #171b24); }
body.bg-dark .note.ene img{ border-color:#1a1f29; }
body.bg-dark .done-all{ background:linear-gradient(135deg,#1e2129,#221c24);
  border-color:color-mix(in srgb, var(--accent) 40%, #2d323d); color:#dfe2e8; }
body.bg-dark .foot-card{ background:linear-gradient(135deg,#1e2129,#221c24); border-color:#2d323d; color:#d9dce2; }
body.bg-dark .foot-note{ color:#7d7b76; }
body.bg-dark .pomo{ background:rgba(20,24,32,.95); border-color:var(--line); }
body.bg-dark .pomo-btns button, body.bg-dark .pomo-presets button, body.bg-dark .pomo-custom .st{
  background:var(--paper2); border-color:var(--line); color:var(--ink-soft); }
body.bg-dark .pomo-btns .main{ background:var(--accentd,var(--accent)); border-color:var(--accentd,var(--accent)); color:#fff; }
body.bg-dark .pomo-presets button.on{ background:var(--accentd,var(--accent)); border-color:var(--accentd,var(--accent)); color:#fff; }
body.bg-dark .toast{ background:rgba(240,238,234,.95); color:#1b1f27; }

/* ---------- 番茄钟：自定义分钟 ---------- */
.pomo-custom{ display:flex; align-items:center; gap:5px; margin-top:10px; font-size:11.5px; color:var(--ink-soft); }
.pomo-custom .lb{ font-size:11.5px; }
.pomo-custom .st{ width:26px; height:26px; border:1px solid var(--line); border-radius:9px; background:#fff;
  font-size:14px; line-height:1; color:var(--ink-soft); }
.pomo-custom .st:hover{ border-color:var(--accent); color:var(--accent); }
.pomo-custom .v{ min-width:26px; text-align:center; font-size:13px; font-weight:700; color:var(--ink); font-variant-numeric:tabular-nums; }

/* ---------- toast ---------- */
.toast{ position:fixed; left:50%; top:62px; transform:translateX(-50%) translateY(-8px); z-index:80;
  background:rgba(43,47,56,.94); color:#fff; font-size:13px; padding:9px 15px; border-radius:999px;
  opacity:0; pointer-events:none; transition:.22s; max-width:86vw; text-align:center; box-shadow:0 8px 24px rgba(40,30,20,.22); }
.toast.on{ opacity:1; transform:translateX(-50%) translateY(0); }

/* ---------- 横屏兜底：锁不住方向就把整页转 90°（跟题库一套写法） ---------- */
body.force-land{ position:fixed; top:0; left:0; width:100vh; height:100vw; min-height:0;
  transform:rotate(90deg) translateY(-100%); transform-origin:top left;
  overflow-y:auto; overflow-x:hidden; -webkit-overflow-scrolling:touch; }
body.force-land .wrap, body.force-land .shell{ max-width:1040px; }
body.force-land .cards{ grid-template-columns:repeat(3,minmax(0,1fr)); }
body.force-land .hero{ min-height:40vh; padding:5vh 6vw 4vh; }
body.force-land .banner{ min-height:26vh; padding-top:34px; }
body.force-land .topbtns{ position:absolute; }
body.force-land .drawer{ width:min(92vh,392px); max-height:calc(100vw - 96px); }
html.force-land-on{ overflow:hidden; }

@media print{ .topbtns, .drawer, .toast{ display:none; } }