/* ============================================================
   听自悟 · 动态排版样式
   —— 流式字阶(clamp) + 渐变流动 + 入场动效 + 滚动显影
   ============================================================ */

:root{
  --ink:#22282e;
  --ink-2:#5a6470;
  --ink-3:#8b95a1;
  --paper:#f7f4ec;
  --paper-2:#fffdf8;
  --line:#e5dfd1;
  --accent:#2f7cf6;
  --accent-deep:#1c4f9e;
  --accent-soft:rgba(47,124,246,.08);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,sans-serif;
  --shadow:0 10px 30px rgba(34,40,46,.08);
  --shadow-lg:0 24px 60px rgba(34,40,46,.14);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;color-scheme:light}
body{
  font-family:var(--sans);
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    radial-gradient(1200px 500px at 85% -10%, var(--accent-soft), transparent 60%);
  line-height:1.9;
  font-size:16px;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
ul,ol{padding-left:1.2em}
li{margin:.35em 0}
::selection{background:var(--accent);color:#fff}

/* ---------- 流式字阶：随视口动态缩放 ---------- */
.t-hero{font-size:clamp(2.6rem,7.5vw,5.2rem);line-height:1.12;letter-spacing:.06em}
.t-h1{font-size:clamp(1.7rem,4.2vw,2.5rem);line-height:1.3}
.t-h2{font-size:clamp(1.35rem,3vw,1.8rem);line-height:1.4}
.t-sub{font-size:clamp(1rem,2.2vw,1.2rem)}
.t-small{font-size:.86rem}

/* ---------- 动态渐变文字 ---------- */
.flow-text{
  background:linear-gradient(120deg,var(--accent),var(--accent-deep) 30%,var(--accent) 60%,var(--accent-deep));
  background-size:300% 100%;
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
  animation:flow 9s linear infinite;
}
@keyframes flow{to{background-position:300% 0}}

/* ---------- 版芯 ---------- */
.wrap{max-width:1120px;margin:0 auto;padding:0 clamp(16px,4vw,40px)}
.narrow{max-width:820px;margin:0 auto}

/* ---------- 顶部导航 ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(247,244,236,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar .wrap{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand svg{width:34px;height:34px;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.brand:hover svg{transform:rotate(-8deg) scale(1.08)}
.brand b{font-family:var(--serif);font-size:1.25rem;letter-spacing:.28em}
.nav{display:flex;gap:2px;margin-left:auto;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{
  padding:8px 11px;font-size:.9rem;color:var(--ink-2);white-space:nowrap;
  transition:letter-spacing .35s,color .3s;position:relative;
}
.nav a::after{
  content:"";position:absolute;left:11px;right:11px;bottom:4px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .35s cubic-bezier(.2,.8,.2,1);
}
.nav a:hover{color:var(--ink);letter-spacing:.12em}
.nav a:hover::after{transform:scaleX(1)}
.nav a.on{color:var(--ink);font-weight:600}
.nav a.on::after{transform:scaleX(1)}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;padding:clamp(60px,10vw,120px) 0 clamp(40px,7vw,80px);overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none;animation:drift 14s ease-in-out infinite alternate}
.blob.b1{width:420px;height:420px;left:-120px;top:-80px;background:var(--accent-soft)}
.blob.b2{width:340px;height:340px;right:-90px;bottom:-60px;background:radial-gradient(circle,rgba(232,164,26,.18),transparent 70%);animation-delay:-6s}
@keyframes drift{to{transform:translate(50px,36px) scale(1.12)}}

.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.85rem;letter-spacing:.42em;color:var(--ink-2);
  animation:rise .8s .1s both;
}
.kicker::before,.kicker::after{content:"";width:36px;height:1px;background:var(--ink-3)}
.hero h1{font-family:var(--serif);font-weight:700;margin:18px 0 10px;animation:rise .9s .25s both}
.hero .slogan{color:var(--ink-2);max-width:34em;animation:rise 1s .45s both}
.caret{display:inline-block;width:.08em;min-width:2px;background:var(--accent);margin-left:.08em;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}

.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px;animation:rise 1s .6s both}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;
  font-size:.95rem;border:1px solid var(--line);background:var(--paper-2);
  transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .35s,background .35s,color .35s;
}
.btn:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.primary:hover{background:var(--accent);border-color:var(--accent)}

.hero-stats{display:flex;gap:clamp(20px,5vw,64px);margin-top:52px;flex-wrap:wrap;animation:rise 1s .75s both}
.hero-stats div b{font-family:var(--serif);font-size:clamp(1.5rem,3.4vw,2.1rem);display:block}
.hero-stats div span{font-size:.85rem;color:var(--ink-3);letter-spacing:.18em}

/* ---------- 跑马灯 ---------- */
.ticker{border-block:1px solid var(--line);background:var(--paper-2);overflow:hidden;padding:12px 0}
.ticker-inner{display:flex;gap:44px;width:max-content;animation:ticker 46s linear infinite}
.ticker:hover .ticker-inner{animation-play-state:paused}
.ticker a{color:var(--ink-2);font-size:.9rem;white-space:nowrap;transition:color .3s}
.ticker a:hover{color:var(--accent)}
.ticker a i{font-style:normal;color:var(--accent);margin-right:8px;font-family:var(--serif)}
@keyframes ticker{to{transform:translateX(-50%)}}

/* ---------- 通用小节标题 ---------- */
.sec{padding:clamp(44px,7vw,84px) 0}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:clamp(24px,4vw,40px);flex-wrap:wrap}
.sec-head h2{font-family:var(--serif)}
.sec-head .num{
  font-family:var(--serif);font-size:.95rem;color:var(--accent);letter-spacing:.2em;
}
.sec-head .more{margin-left:auto;font-size:.88rem;color:var(--ink-3);transition:color .3s,letter-spacing .3s}
.sec-head .more:hover{color:var(--accent);letter-spacing:.1em}
.rule{height:1px;background:linear-gradient(90deg,var(--ink-3),transparent);flex:1;min-width:40px;align-self:center}

/* ---------- 栏目卡片：错落交错 ---------- */
.cols{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:22px}
.col-card{
  position:relative;padding:26px 24px 22px;border:1px solid var(--line);border-radius:18px;
  background:var(--paper-2);overflow:hidden;
  transition:transform .45s cubic-bezier(.2,.8,.2,1),box-shadow .45s,border-color .45s;
  animation:rise .8s both;
}
.col-card:nth-child(odd){transform:translateY(0)}
.col-card:nth-child(even){transform:translateY(14px)}
.col-card:hover{transform:translateY(-6px) !important;box-shadow:var(--shadow-lg);border-color:var(--accent)}
.col-card::before{
  content:attr(data-no);position:absolute;right:14px;top:6px;
  font-family:var(--serif);font-size:3rem;font-weight:700;line-height:1;
  color:var(--ink);opacity:.06;transition:opacity .4s,transform .4s;
}
.col-card:hover::before{opacity:.14;transform:translateY(-4px)}
.col-card h3{font-family:var(--serif);font-size:1.25rem;margin-bottom:8px;transition:letter-spacing .4s}
.col-card:hover h3{letter-spacing:.1em}
.col-card p{color:var(--ink-2);font-size:.9rem}
.col-card .go{
  display:inline-block;margin-top:16px;font-size:.85rem;color:var(--accent);letter-spacing:.14em;
}
.col-card .go::after{content:"→";display:inline-block;margin-left:6px;transition:transform .35s}
.col-card:hover .go::after{transform:translateX(6px)}
.col-card .tag{
  display:inline-block;font-size:.75rem;color:var(--ink-3);
  border:1px solid var(--line);border-radius:999px;padding:1px 10px;margin-bottom:14px;
}

/* 阶梯式入场延迟（动态排版的节奏感） */
.cols .col-card:nth-child(1){animation-delay:.05s}
.cols .col-card:nth-child(2){animation-delay:.12s}
.cols .col-card:nth-child(3){animation-delay:.19s}
.cols .col-card:nth-child(4){animation-delay:.26s}
.cols .col-card:nth-child(5){animation-delay:.33s}
.cols .col-card:nth-child(6){animation-delay:.40s}
.cols .col-card:nth-child(7){animation-delay:.47s}
.cols .col-card:nth-child(8){animation-delay:.54s}
.cols .col-card:nth-child(9){animation-delay:.61s}
.cols .col-card:nth-child(10){animation-delay:.68s}

/* ---------- 最新文章列表 ---------- */
.latest{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.post-card{
  display:flex;gap:14px;padding:18px;border-radius:14px;border:1px solid var(--line);
  background:var(--paper-2);transition:transform .4s cubic-bezier(.2,.8,.2,1),box-shadow .4s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.post-card .d{
  flex:none;width:52px;text-align:center;border-radius:10px;background:var(--accent-soft);
  color:var(--accent-deep);padding:6px 0;align-self:flex-start;font-size:.8rem;line-height:1.3;
}
.post-card .d b{display:block;font-family:var(--serif);font-size:1.25rem}
.post-card h4{font-size:1rem;font-weight:600;line-height:1.55}
.post-card h4 a:hover{color:var(--accent)}
.post-card .c{font-size:.78rem;color:var(--ink-3);margin-top:6px;display:block}

/* ---------- 引言带 ---------- */
.quote-band{
  position:relative;border-block:1px solid var(--line);
  background:linear-gradient(120deg,var(--paper-2),var(--accent-soft),var(--paper-2));
  background-size:220% 100%;animation:flow 16s linear infinite;
  padding:clamp(36px,6vw,60px) 0;text-align:center;
}
.quote-band blockquote{
  font-family:var(--serif);font-size:clamp(1.15rem,2.6vw,1.6rem);line-height:2;max-width:26em;margin:0 auto;
}
.quote-band cite{display:block;margin-top:14px;font-style:normal;font-size:.85rem;color:var(--ink-3);letter-spacing:.3em}

/* ---------- 栏目页 Hero ---------- */
.chero{
  position:relative;overflow:hidden;
  padding:clamp(44px,7vw,76px) 0;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(700px 260px at 12% 0%,var(--accent-soft),transparent 70%),
    var(--paper-2);
}
.chero .crumb{font-size:.85rem;color:var(--ink-3);animation:rise .7s .05s both}
.chero .crumb a:hover{color:var(--accent)}
.chero h1{font-family:var(--serif);margin:14px 0 12px;animation:rise .8s .15s both}
.chero .desc{color:var(--ink-2);max-width:44em;animation:rise .9s .3s both}
.chero .meta{display:flex;gap:22px;margin-top:24px;flex-wrap:wrap;font-size:.85rem;color:var(--ink-3);animation:rise 1s .45s both}
.chero .meta b{color:var(--accent-deep);font-family:var(--serif);font-size:1rem}

/* ---------- 版式A：账簿式行目（大序号） ---------- */
.ledger{counter-reset:art}
.ledger-row{
  display:flex;align-items:baseline;gap:clamp(14px,3vw,30px);
  padding:22px clamp(4px,2vw,14px);border-bottom:1px dashed var(--line);
  transition:background .35s,padding-left .35s;position:relative;
}
.ledger-row::before{
  counter-increment:art;content:counter(art,decimal-leading-zero);
  font-family:var(--serif);font-size:1.5rem;color:var(--ink-3);min-width:2.2em;
  transition:color .35s,transform .35s;
}
.ledger-row:hover{background:var(--paper-2);padding-left:clamp(14px,3vw,30px)}
.ledger-row:hover::before{color:var(--accent);transform:scale(1.15)}
.ledger-row h3{font-size:1.06rem;font-weight:600;line-height:1.6}
.ledger-row h3 a:hover{color:var(--accent)}
.ledger-row .ext{margin-left:auto;color:var(--ink-3);font-size:.82rem;white-space:nowrap;flex:none}
.ledger-row .new{font-size:.72rem;color:#fff;background:var(--accent);border-radius:999px;padding:1px 9px;margin-left:8px;vertical-align:2px}

/* ---------- 版式B：卡片矩阵 ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.art-card{
  border:1px solid var(--line);border-radius:16px;background:var(--paper-2);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .45s cubic-bezier(.2,.8,.2,1),box-shadow .45s;
}
.art-card:hover{transform:translateY(-6px) rotate(-.4deg);box-shadow:var(--shadow-lg)}
.art-card .bar{height:5px;background:linear-gradient(90deg,var(--accent),transparent);opacity:.75}
.art-card .in{padding:20px 20px 16px;display:flex;flex-direction:column;gap:10px;flex:1}
.art-card h3{font-size:1rem;font-weight:600;line-height:1.6}
.art-card h3 a:hover{color:var(--accent)}
.art-card .foot{margin-top:auto;display:flex;justify-content:space-between;font-size:.78rem;color:var(--ink-3)}

/* ---------- 版式C：杂志式 ---------- */
.mag-feature{
  display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(20px,4vw,44px);align-items:center;
  padding:clamp(22px,4vw,36px);border:1px solid var(--line);border-radius:20px;
  background:var(--paper-2);margin-bottom:34px;transition:box-shadow .4s;
}
.mag-feature:hover{box-shadow:var(--shadow)}
.mag-feature .k{font-size:.8rem;letter-spacing:.34em;color:var(--accent);margin-bottom:12px}
.mag-feature h3{font-family:var(--serif);font-size:clamp(1.3rem,3vw,1.8rem);line-height:1.5;margin-bottom:12px}
.mag-feature h3 a:hover{color:var(--accent)}
.mag-feature p{color:var(--ink-2);font-size:.92rem}
.mag-feature .side{
  font-family:var(--serif);font-size:clamp(4rem,9vw,7rem);line-height:1;font-weight:700;
  color:var(--accent);opacity:.14;text-align:center;
}
.mag-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.mag-item{
  border-left:3px solid var(--line);padding:6px 0 6px 18px;transition:border-color .35s,padding-left .35s;
}
.mag-item:hover{border-color:var(--accent);padding-left:26px}
.mag-item h3{font-size:.98rem;font-weight:600;line-height:1.6}
.mag-item h3 a:hover{color:var(--accent)}
.mag-item span{font-size:.78rem;color:var(--ink-3)}

/* ---------- 文章页 ---------- */
.article{padding:clamp(34px,6vw,64px) 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(24px,4vw,48px)}
@media(min-width:960px){
  .article-layout.with-aside{grid-template-columns:minmax(0,1fr) 260px}
}
.a-head .crumb{font-size:.85rem;color:var(--ink-3)}
.a-head .crumb a:hover{color:var(--accent)}
.a-head h1{font-family:var(--serif);font-size:clamp(1.55rem,3.8vw,2.2rem);line-height:1.5;margin:14px 0}
.a-meta{display:flex;gap:20px;flex-wrap:wrap;font-size:.83rem;color:var(--ink-3);padding-bottom:22px;border-bottom:1px solid var(--line)}
.a-meta b{color:var(--accent-deep);font-weight:600}

.prose{font-size:1.02rem;color:#333a41}
.prose p{margin:1.1em 0}
.prose h3{
  font-family:var(--serif);font-size:1.25rem;margin:1.9em 0 .8em;padding-left:14px;
  border-left:4px solid var(--accent);line-height:1.5;
}
.prose h3::before{content:"§ ";color:var(--accent);font-size:.85em}
.prose ul,.prose ol{margin:1em 0}
.prose li::marker{color:var(--accent)}
.prose blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:4px solid var(--accent);
  background:var(--accent-soft);border-radius:0 12px 12px 0;color:var(--ink-2);
  font-family:var(--serif);
}
.prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:.92rem}
.prose th,.prose td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.prose th{background:var(--paper-2);font-weight:600}
.prose strong{color:var(--accent-deep)}
.prose .tip{
  border:1px dashed var(--accent);border-radius:12px;padding:14px 18px;margin:1.6em 0;
  background:var(--accent-soft);font-size:.95rem;
}
.prose .tip b{color:var(--accent-deep)}
.prose .qa{margin:1.3em 0}
.prose .qa q{font-weight:600;color:var(--ink)}
.prose figure{margin:1.8em 0;text-align:center;color:var(--ink-3);font-size:.88rem}
.prose .wave{
  text-align:center;font-family:var(--serif);color:var(--ink-3);letter-spacing:1.2em;margin:2em 0;
}

/* 文章首段下沉（动态排版的经典手法） */
.shell-drop .prose > p:first-of-type::first-letter{
  float:left;font-family:var(--serif);font-size:3.1em;line-height:.9;
  padding:.06em .14em 0 0;color:var(--accent);font-weight:700;
}

/* 侧栏 */
.aside-box{border:1px solid var(--line);border-radius:16px;background:var(--paper-2);padding:22px;margin-bottom:20px;position:sticky;top:84px}
.aside-box h4{font-family:var(--serif);font-size:1rem;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.aside-box ul{list-style:none;padding:0}
.aside-box li{padding:8px 0;border-bottom:1px dashed var(--line);font-size:.9rem}
.aside-box li:last-child{border-bottom:none}
.aside-box li a:hover{color:var(--accent)}
.aside-box li span{display:block;font-size:.76rem;color:var(--ink-3)}

/* 上下篇 & 相关 */
.pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:44px}
.pn a{
  border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--paper-2);
  transition:transform .35s,box-shadow .35s;
}
.pn a:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.pn a.next{text-align:right}
.pn small{display:block;color:var(--ink-3);font-size:.78rem;margin-bottom:4px;letter-spacing:.1em}
.pn b{font-size:.92rem;font-weight:600}

.related{margin-top:40px}
.related h4{font-family:var(--serif);margin-bottom:16px}
.related ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.related li a{
  display:block;border:1px solid var(--line);border-radius:12px;padding:12px 16px;
  background:var(--paper-2);font-size:.9rem;transition:border-color .3s,transform .3s,color .3s;
}
.related li a:hover{border-color:var(--accent);transform:translateX(4px);color:var(--accent)}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--line);background:var(--paper-2);margin-top:40px}
.foot-in{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;padding:clamp(30px,5vw,48px) 0}
.foot-in .about{max-width:38em;color:var(--ink-2);font-size:.9rem}
.foot-in .links{display:flex;gap:26px;flex-wrap:wrap;font-size:.88rem}
.foot-in .links a{color:var(--ink-2);transition:color .3s,letter-spacing .3s}
.foot-in .links a:hover{color:var(--accent);letter-spacing:.1em}
.copy{border-top:1px solid var(--line);padding:18px 0;font-size:.82rem;color:var(--ink-3);display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.copy a:hover{color:var(--accent)}

/* ---------- 滚动显影（现代浏览器渐进增强） ---------- */
@supports (animation-timeline: view()){
  @media (prefers-reduced-motion:no-preference){
    .reveal{animation:rise .9s both;animation-timeline:view();animation-range:entry 0% entry 58%}
    .reveal-d1{animation:rise .9s both;animation-timeline:view();animation-range:entry 5% entry 65%}
    .reveal-d2{animation:rise .9s both;animation-timeline:view();animation-range:entry 10% entry 72%}
  }
}
@supports not (animation-timeline:view()){.reveal,.reveal-d1,.reveal-d2{animation:rise .8s both}}

/* ---------- 深色模式适配：让预览/系统在暗色下也能体面 ---------- */
@media (prefers-color-scheme: dark){
  :root{
    --ink:#e8edf2;
    --ink-2:#9ba5b1;
    --ink-3:#6d7783;
    --paper:#151a20;
    --paper-2:#1d242c;
    --line:#2b343d;
    --shadow:0 10px 30px rgba(0,0,0,.25);
    --shadow-lg:0 24px 60px rgba(0,0,0,.35);
  }
  .topbar{background:rgba(21,26,32,.86);border-bottom-color:var(--line)}
  .ticker{background:var(--paper-2)}
  .quote-band{background:linear-gradient(120deg,var(--paper-2),var(--accent-soft),var(--paper-2));border-color:var(--line)}
  .btn{background:var(--paper-2);border-color:var(--line)}
  .btn.primary{background:var(--ink);border-color:var(--ink)}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* ---------- 响应式 ---------- */
@media(max-width:760px){
  .mag-feature{grid-template-columns:1fr}
  .mag-feature .side{display:none}
  .pn{grid-template-columns:1fr}
  .pn a.next{text-align:left}
  .ledger-row .ext{display:none}
  .brand b{letter-spacing:.14em;font-size:1.05rem}
}