/* 我的时间观念与严谨 · 演示页样式（浅橙暖色 · PPT 版式） */
:root{
  --bg:#faf3e9;
  --ink:#3c2e20;
  --ink-2:#8a7660;
  --accent:#c96f2e;
  --accent-deep:#a0521c;
  --card:#fffdf8;
  --line:#ead9bf;
  --shadow:0 12px 32px rgba(140,95,40,.10);
  --serif:'Noto Serif SC','Source Han Serif SC','STZhongsong','SimSun',serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;overflow:hidden}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(1100px 640px at 82% -12%,rgba(224,154,85,.14),transparent 62%),
    radial-gradient(900px 560px at -12% 112%,rgba(201,111,46,.10),transparent 62%),
    var(--bg);
}
.deck{position:fixed;inset:0;z-index:1}

/* 背景动效层：光斑 / 圆环 / 点阵 */
.bg-fx{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-fx .blob{position:absolute;border-radius:50%;filter:blur(70px)}
.bg-fx .b1{width:58vw;height:58vw;left:-20vw;top:-24vw;
  background:radial-gradient(circle,rgba(224,154,85,.38),transparent 65%);
  animation:drift1 26s ease-in-out infinite alternate}
.bg-fx .b2{width:50vw;height:50vw;right:-18vw;bottom:-22vw;
  background:radial-gradient(circle,rgba(201,111,46,.30),transparent 65%);
  animation:drift2 34s ease-in-out infinite alternate}
.bg-fx .ring{position:absolute;border-radius:50%}
.bg-fx .r1{width:46vh;height:46vh;right:6vw;top:-14vh;border:1px solid rgba(160,82,28,.15)}
.bg-fx .r2{width:74vh;height:74vh;left:-20vh;bottom:-26vh;
  border:1px dashed rgba(160,82,28,.13);animation:spin 90s linear infinite}
.bg-fx .grid{position:absolute;inset:0;opacity:.4;
  background-image:radial-gradient(rgba(160,82,28,.12) 1px,transparent 1px);
  background-size:28px 28px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 42%,#000 26%,transparent 74%);
  mask-image:radial-gradient(ellipse at 50% 42%,#000 26%,transparent 74%)}

/* 沙漏：右下角小尺寸，沙量随分享进行 21 分钟从满到空；上/下半可点击翻页 */
.hgf{position:absolute;right:24px;bottom:16px;
  height:58px;width:auto;opacity:.5;pointer-events:none}
.hgf .stream{animation:flow .6s linear infinite}
@keyframes flow{to{stroke-dashoffset:-7}}
.hg-ctl{position:fixed;right:20px;bottom:14px;z-index:21;
  display:flex;flex-direction:column}
.hg-ctl button{width:44px;height:31px;border:none;background:transparent;
  cursor:pointer;border-radius:8px;padding:0;transition:background .2s}
.hg-ctl button:hover{background:rgba(160,82,28,.12)}
.hg-ctl button:active{background:rgba(160,82,28,.22)}
@keyframes drift1{to{transform:translate(6vw,4vh) scale(1.08)}}
@keyframes drift2{to{transform:translate(-5vw,-4vh) scale(1.1)}}
@keyframes spin{to{transform:rotate(360deg)}}

/* 幻灯片切换 */
.slide{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  padding:6vh 8vw 10vh;
  opacity:0;visibility:hidden;
  transform:translateY(26px) scale(.988);
  transition:opacity .65s ease,transform .65s ease,visibility 0s linear .65s;
  overflow:hidden;
}
.slide.active{
  opacity:1;visibility:visible;transform:none;z-index:2;
  transition-delay:0s,0s,0s;
}
.wrap{width:100%;max-width:1060px;position:relative;z-index:1}

/* 章节底纹大数字 */
.ghost{
  position:absolute;right:-1vw;top:-7vh;z-index:0;
  font-family:var(--serif);font-size:26vh;font-weight:900;line-height:1;
  color:rgba(201,111,46,.05);
  -webkit-text-stroke:1.5px rgba(160,82,28,.18);
  user-select:none;pointer-events:none;
}
.slide.active .ghost{animation:ghostIn 1.4s cubic-bezier(.2,.7,.25,1) both}
@keyframes ghostIn{from{opacity:0;transform:scale(1.1) translateY(12px)}to{opacity:1;transform:none}}

/* 入场动画 */
.a,.a-l,.a-r,.a-s{opacity:0;
  transition:opacity .75s cubic-bezier(.2,.7,.25,1) var(--d,0s),
             transform .75s cubic-bezier(.2,.7,.25,1) var(--d,0s)}
.a{transform:translateY(26px)}
.a-l{transform:translateX(-36px)}
.a-r{transform:translateX(36px)}
.a-s{transform:scale(.92)}
.slide.active :is(.a,.a-l,.a-r,.a-s){opacity:1;transform:none}
.grow{transform:scaleX(0);transition:transform .9s cubic-bezier(.2,.7,.25,1) var(--d,0s)}
.slide.active .grow{transform:scaleX(1)}

/* 封面 / 结尾 */
.cover,.end{text-align:center}
.fx-canvas{position:absolute;inset:0;z-index:2;pointer-events:none;transition:opacity .8s ease}
.fx-canvas.done{opacity:0}
.s-cover h1.fx-pre{opacity:0;transform:none;transition:none}
.s-cover h1.fx-reveal{opacity:1;transform:none;transition:opacity .9s ease}
.kicker{display:inline-block;border:1px solid rgba(201,111,46,.55);color:var(--accent-deep);
  padding:5px 18px;border-radius:999px;font-size:13px;letter-spacing:4px;background:rgba(255,253,248,.7)}
.cover h1,.end h1{font-family:var(--serif);font-size:clamp(40px,6.6vw,76px);
  letter-spacing:10px;margin:30px 0 20px;font-weight:900}
.cover{position:relative}
.cover::before{content:"";position:absolute;left:50%;top:34%;transform:translate(-50%,-50%);
  width:52vh;height:52vh;border:1px solid rgba(160,82,28,.16);border-radius:50%;
  pointer-events:none;z-index:-1}
.cover::after{content:"";position:absolute;left:50%;top:34%;transform:translate(-50%,-50%);
  width:40vh;height:40vh;border:1px dashed rgba(160,82,28,.20);border-radius:50%;
  animation:spinC 80s linear infinite;pointer-events:none;z-index:-1}
@keyframes spinC{from{transform:translate(-50%,-50%) rotate(0)}to{transform:translate(-50%,-50%) rotate(360deg)}}
.cover .sub,.end .sub{font-size:clamp(15px,1.9vw,20px);color:var(--ink-2);letter-spacing:3px}
.divider{width:64px;height:3px;background:var(--accent);margin:30px auto;border-radius:2px}
.cover .greet{font-size:clamp(14px,1.7vw,18px);color:var(--accent-deep);letter-spacing:1px}
.cover .meta,.end .meta{margin-top:14px;font-size:13px;color:var(--ink-2);letter-spacing:2px}

/* 章节标题 */
.s-title{font-family:var(--serif);font-size:clamp(30px,4vw,46px);letter-spacing:3px;
  font-weight:900;position:relative;z-index:1}
.s-sub{margin-top:10px;color:var(--ink-2);font-size:clamp(14px,1.6vw,18px);letter-spacing:1px}

/* 要点条目 */
.pts{margin-top:28px;display:grid;gap:12px;position:relative;z-index:1}
.pt{display:flex;gap:12px;align-items:flex-start;background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:14px 18px;box-shadow:var(--shadow);
  font-size:clamp(13.5px,1.45vw,16.5px);line-height:1.85}
.pt::before{content:"";flex:0 0 8px;height:8px;border-radius:50%;background:var(--accent);margin-top:11px}
.pt b{color:var(--accent-deep)}

/* 案例卡片 */
.example{margin-top:14px;background:linear-gradient(135deg,rgba(201,111,46,.12),rgba(201,111,46,.04));
  border:1px solid rgba(201,111,46,.28);border-radius:14px;padding:14px 20px;
  line-height:1.85;font-size:clamp(13px,1.4vw,16px)}
.example .tag{display:inline-block;background:var(--accent);color:#fff;font-size:12px;
  padding:2px 10px;border-radius:999px;margin-right:8px;letter-spacing:2px}
.example b{color:var(--accent-deep)}

/* 自问清单 */
.qs{margin-top:14px;border:1px dashed rgba(201,111,46,.5);border-radius:14px;
  padding:12px 20px;background:rgba(255,253,248,.65)}
.qs h4{color:var(--accent-deep);font-size:14px;letter-spacing:1px;margin-bottom:6px}
.qs ol{margin-left:20px;display:grid;gap:2px;font-size:clamp(13px,1.35vw,15.5px);line-height:1.8}

/* 结论条 */
.take{margin-top:20px;padding:13px 20px;border-left:4px solid var(--accent);
  background:linear-gradient(90deg,rgba(201,111,46,.10),transparent 70%);
  border-radius:0 12px 12px 0;font-weight:700;letter-spacing:.5px;
  font-size:clamp(14px,1.55vw,18px)}

/* 双栏卡片（开场提问 / 对比） */
.duo,.vs{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px;position:relative;z-index:1}
.vs{margin-top:24px}
.box{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:20px 24px;box-shadow:var(--shadow)}
.box .lb{display:inline-block;font-size:12.5px;color:var(--accent-deep);
  border:1px solid rgba(201,111,46,.45);border-radius:999px;padding:3px 12px;
  letter-spacing:2px;margin-bottom:10px;background:rgba(201,111,46,.06)}
.box p{font-size:clamp(13.5px,1.5vw,16.5px);line-height:1.95}
.vsdot{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--shadow);z-index:2}

/* 标签组 / 定义行 / 补充说明 */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.chip{background:var(--card);border:1px solid var(--line);border-radius:999px;
  padding:8px 18px;font-weight:700;box-shadow:var(--shadow);
  font-size:clamp(13px,1.4vw,15.5px);color:var(--accent-deep)}
.def{margin-top:14px;font-size:clamp(14.5px,1.55vw,17.5px);font-weight:700;
  font-family:var(--serif);letter-spacing:.5px}
.note{margin-top:12px;color:var(--ink-2);font-size:clamp(13px,1.4vw,15.5px);line-height:1.8}

/* 左右对照行 */
.rows{margin-top:24px;display:grid;gap:12px;position:relative;z-index:1}
.rowhead{display:grid;grid-template-columns:1fr 46px 1fr;
  color:var(--accent-deep);font-size:13px;letter-spacing:2px;font-weight:700}
.rowhead span:first-child,.rowhead span:last-child{text-align:center}
.row{display:grid;grid-template-columns:1fr 46px 1fr;align-items:stretch}
.row .cell{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:13px 18px;box-shadow:var(--shadow);
  font-size:clamp(13px,1.4vw,16px);line-height:1.75;display:flex;align-items:center}
.row .cell.r{border-color:rgba(201,111,46,.4);
  background:linear-gradient(135deg,rgba(201,111,46,.10),var(--card));font-weight:600}
.row .arr{display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:20px;font-weight:700}

/* 四宫格 */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px;position:relative;z-index:1}
.card{position:relative;overflow:hidden;background:var(--card);border:1px solid var(--line);
  border-radius:16px;padding:20px 22px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.card::after{content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:linear-gradient(90deg,var(--accent),#e09a55);
  transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.card:hover::after{transform:scaleX(1)}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(140,95,40,.16)}
.card .cn{width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13.5px;font-weight:700;margin-bottom:10px}
.card h3{font-size:18px;margin-bottom:8px;letter-spacing:1px}
.card p{color:var(--ink-2);font-size:14px;line-height:1.85}

/* 金句页 */
.lines{margin-top:26px;display:grid;gap:12px;position:relative;z-index:1}
.s-quote .wrap::before,.s-quote .wrap::after{
  font-family:var(--serif);font-weight:900;position:absolute;z-index:-1;
  color:rgba(201,111,46,.22);font-size:18vh;line-height:1}
.s-quote .wrap::before{content:"「";left:0;top:-4vh}
.s-quote .wrap::after{content:"」";right:0;bottom:3vh}
.ql{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:15px 24px;box-shadow:var(--shadow);font-family:var(--serif);font-weight:700;
  font-size:clamp(15px,1.85vw,20px);letter-spacing:2px}
.ql b{color:var(--accent-deep)}
.close{margin-top:26px;text-align:center;color:var(--accent-deep);
  font-family:var(--serif);font-weight:900;letter-spacing:4px;
  font-size:clamp(18px,2.4vw,28px)}

/* 界面控件 */
.progress{position:fixed;left:0;bottom:0;height:4px;width:0;z-index:20;
  background:linear-gradient(90deg,var(--accent),#e09a55);
  transition:width .5s ease;border-radius:0 3px 3px 0}
.hud{position:fixed;left:26px;bottom:15px;z-index:20;
  font-size:12.5px;color:var(--ink-2);letter-spacing:2px}
.hud b{color:var(--accent-deep);font-size:14px}
.hud span{margin-left:8px}
/* 小屏适配 */
@media (max-width:760px){
  .slide{padding:7vh 6vw 13vh}
  .bg-fx .blob{filter:blur(44px)}
  .cover::before{width:64vw;height:64vw}
  .cover::after{width:50vw;height:50vw}
  .duo,.vs,.cards{grid-template-columns:1fr}
  .vsdot{display:none}
  .row,.rowhead{grid-template-columns:1fr 26px 1fr}
  .row .arr{font-size:15px}
  .ghost{font-size:15vh;top:-2vh}
  .hgf{height:44px;right:16px;bottom:12px}
  .hg-ctl{right:12px;bottom:10px}
  .hg-ctl button{width:38px;height:26px}
  .hud{left:14px;bottom:10px}
}
@media (max-height:640px){
  .slide{padding:4vh 7vw 9vh}
  .pts,.rows,.lines{margin-top:16px}
  .take{margin-top:12px;padding:10px 16px}
}