@charset "UTF-8";

/* =========================================================
   北京五景 · 视觉规范
   画幅：1350 × 1340（竖屏）
   ========================================================= */

:root{
  --paper:#F3EEE4;
  --paper-2:#EAE2D4;
  --ink:#17130F;
  --ink-2:#4C433A;
  --muted:#7A6E61;
  --red:#A6331F;
  --gold:#B08A46;
  --gold-l:#E2BE7A;
  --line:rgba(23,19,15,.14);
  --line-2:rgba(23,19,15,.28);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}

html{
  scroll-behavior:smooth;
  background:#E5DCCB;
}

body{
  width:1350px;
  margin:0 auto;
  font-family:var(--sans);
  font-size:22px;
  line-height:1.85;
  color:var(--ink);
  background:#E5DCCB;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{display:block;max-width:100%}
a{color:inherit}
button{font-family:inherit}

.page{
  position:relative;
  width:1350px;
  background:var(--paper);
  box-shadow:0 0 0 1px rgba(0,0,0,.06), 0 40px 120px rgba(40,28,14,.22);
  overflow:hidden;
}

/* 纸张颗粒 */
.grain{
  position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.16;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.42'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}

/* ================= 顶部导航 ================= */
.topbar{
  position:fixed;top:0;left:50%;z-index:50;
  width:1350px;
  background:rgba(243,238,228,.93);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transform:translateX(-50%) translateY(-102%);
  transition:transform .5s cubic-bezier(.2,.8,.2,1);
}
.topbar.show{transform:translateX(-50%) translateY(0)}

.topbar-inner{
  height:74px;padding:0 46px;
  display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:baseline;gap:14px;text-decoration:none}
.brand-cn{font-family:var(--serif);font-size:25px;font-weight:700;letter-spacing:.14em}
.brand-en{font-size:12px;letter-spacing:.24em;color:var(--muted)}

.nav{display:flex;gap:26px}
.nav a{
  position:relative;text-decoration:none;
  font-size:19px;letter-spacing:.08em;color:var(--ink-2);
  padding:6px 0;transition:color .3s;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--red);transition:width .3s ease;
}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{width:100%}
.nav a.active{color:var(--red)}
.nav a.active::after{width:100%}

.progress{height:2px;background:rgba(23,19,15,.06)}
.progress i{display:block;height:2px;width:0;background:var(--red)}

/* ================= 封面 ================= */
.hero{
  position:relative;
  width:1350px;height:1340px;
  overflow:hidden;color:#F7F2E8;background:#0D0A08;
}
.hero-bg{position:absolute;inset:0}
.hero-bg img{
  width:100%;height:100%;object-fit:cover;object-position:50% 44%;
  animation:kenburns 28s ease-out both;
}
@keyframes kenburns{from{transform:scale(1.09)}to{transform:scale(1)}}

.hero-veil{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(9,7,5,.58) 0%,rgba(9,7,5,.06) 24%,rgba(9,7,5,.14) 54%,rgba(9,7,5,.84) 86%,rgba(9,7,5,.97) 100%),
    linear-gradient(95deg,rgba(9,7,5,.74) 0%,rgba(9,7,5,.34) 40%,rgba(9,7,5,0) 64%);
}

.hero-top{
  position:absolute;top:52px;left:72px;right:72px;
  display:flex;justify-content:space-between;align-items:center;
  font-size:19px;letter-spacing:.26em;color:rgba(247,242,232,.86);
}
.hero-tag{padding-left:18px;border-left:2px solid var(--gold-l)}
.hero-coord{letter-spacing:.18em;font-variant-numeric:tabular-nums;opacity:.7;font-size:17px}

.hero-vtext{
  position:absolute;right:74px;top:286px;
  writing-mode:vertical-rl;
  font-family:var(--serif);font-size:25px;letter-spacing:.52em;
  color:rgba(247,242,232,.72);
  padding-right:16px;border-right:1px solid rgba(247,242,232,.34);
}

.hero-body{position:absolute;left:72px;bottom:240px;width:800px}
.hero-kicker{
  font-size:16px;letter-spacing:.36em;color:var(--gold-l);
  margin-bottom:24px;
}
.hero-title{
  display:flex;align-items:flex-end;gap:20px;
  font-family:var(--serif);font-weight:800;line-height:.82;
}
.h1-cn{font-size:196px;letter-spacing:.03em;text-shadow:0 10px 50px rgba(0,0,0,.45)}
.h1-sub{
  font-size:96px;letter-spacing:.1em;color:var(--gold-l);
  padding-bottom:14px;text-shadow:0 8px 30px rgba(0,0,0,.4);
}
.hero-lead{
  margin-top:32px;width:760px;
  font-size:24px;line-height:1.95;color:rgba(247,242,232,.94);
  text-shadow:0 2px 18px rgba(0,0,0,.55);
}
.hero-rule{width:110px;height:2px;background:var(--gold-l);margin:28px 0 18px}
.hero-meta{font-size:22px;letter-spacing:.12em;color:rgba(247,242,232,.78);text-shadow:0 2px 14px rgba(0,0,0,.5)}

.hero-index{
  position:absolute;right:72px;bottom:240px;width:404px;
  padding:10px 22px 14px;
  background:linear-gradient(180deg,rgba(10,8,6,.74) 0%,rgba(10,8,6,.52) 100%);
  border-top:1px solid rgba(247,242,232,.26);
  border-bottom:1px solid rgba(247,242,232,.26);
}
.hero-index::before{
  content:"";position:absolute;left:-56px;top:0;bottom:0;width:56px;
  background:linear-gradient(90deg,rgba(10,8,6,0),rgba(10,8,6,.62));
}
.hero-index a{
  display:flex;align-items:baseline;gap:14px;
  padding:14px 0;text-decoration:none;color:#F2EADA;
  border-top:1px solid rgba(247,242,232,.22);
  transition:transform .35s ease,color .35s ease;
}
.hero-index a:last-child{border-bottom:1px solid rgba(247,242,232,.22)}
.hero-index a:hover{transform:translateX(-8px);color:var(--gold-l)}
.hi-num{font-size:14px;letter-spacing:.2em;color:var(--gold-l);width:34px;flex:0 0 auto}
.hi-name{flex:1;font-family:var(--serif);font-size:27px;letter-spacing:.12em;text-shadow:0 2px 10px rgba(0,0,0,.55)}
.hi-time{font-size:17px;color:rgba(247,242,232,.58);letter-spacing:.06em}

.scroll-cue{
  position:absolute;left:72px;bottom:66px;
  display:flex;align-items:center;gap:16px;
  font-size:16px;letter-spacing:.26em;color:rgba(247,242,232,.62);
}
.scroll-cue span{
  display:block;width:1px;height:52px;
  background:linear-gradient(180deg,transparent,var(--gold-l));
  position:relative;overflow:hidden;
}
.scroll-cue span::after{
  content:"";position:absolute;left:0;top:-52px;width:1px;height:52px;
  background:linear-gradient(180deg,transparent,#fff);
  animation:drop 2.6s ease-in-out infinite;
}
@keyframes drop{0%{top:-52px}60%,100%{top:52px}}

/* ================= 通用版式 ================= */
.screen{
  position:relative;width:1350px;min-height:1340px;
  padding:96px 90px;
}
.screen::after{
  content:"";position:absolute;left:90px;right:90px;bottom:0;height:1px;
  background:var(--line);
}
.screen:last-of-type::after{display:none}

.eyebrow{
  font-size:16px;letter-spacing:.3em;color:var(--red);
  margin-bottom:18px;font-weight:500;
}
.sec-head h2{
  font-family:var(--serif);font-size:62px;line-height:1.2;
  letter-spacing:.03em;font-weight:700;
}
.en{
  font-size:14px;letter-spacing:.26em;color:var(--muted);
  font-weight:400;
}

/* ================= 概览 ================= */
.overview{padding-top:104px}
.ov-grid{
  margin-top:44px;
  display:grid;grid-template-columns:716px 1fr;gap:66px;align-items:start;
}
.ov-copy .lead{
  font-family:var(--serif);font-size:27px;line-height:1.75;
  color:var(--ink);margin-bottom:20px;
}
.ov-copy p{
  font-size:22px;line-height:1.9;color:var(--ink-2);
  margin-bottom:16px;text-align:justify;
}
.ov-stats{
  display:grid;grid-template-columns:1fr 1fr;
  border-top:1px solid var(--line-2);border-left:1px solid var(--line-2);
}
.stat{
  padding:22px 20px 20px;
  border-right:1px solid var(--line-2);border-bottom:1px solid var(--line-2);
  display:flex;flex-direction:column;gap:10px;
  background:rgba(255,255,255,.22);
}
.stat-k{font-size:17px;letter-spacing:.18em;color:var(--muted)}
.stat-v{font-family:var(--serif);font-size:44px;line-height:1;letter-spacing:.02em}
.stat-v i{font-style:normal;font-size:19px;color:var(--muted);margin-left:6px}
.stat-v.v-sm{font-size:30px;line-height:1.25;padding-top:6px;white-space:nowrap}

.ov-index{
  margin-top:44px;
  display:grid;grid-template-columns:repeat(5,1fr);
  border-top:1px solid var(--line-2);
}
.ov-item{
  display:block;text-decoration:none;
  padding:24px 16px 6px;
  border-right:1px solid var(--line);
  transition:background .4s ease;
}
.ov-item:last-child{border-right:none}
.ov-item img{
  width:100%;height:132px;object-fit:cover;
  filter:saturate(.9) contrast(1.02);
  transition:filter .5s ease,transform .5s cubic-bezier(.2,.8,.2,1);
}
.ov-item:hover{background:rgba(255,255,255,.4)}
.ov-item:hover img{filter:none;transform:translateY(-5px)}
.ov-item-head{
  margin-top:14px;display:flex;justify-content:space-between;align-items:baseline;gap:8px;
}
.ov-item-head b{font-family:var(--serif);font-size:23px;letter-spacing:.04em;font-weight:700}
.ov-item-sub{font-size:22px;line-height:1.55;color:var(--muted);margin-top:8px}
.ov-item-meta{font-size:16px;letter-spacing:.1em;color:var(--red);white-space:nowrap}

.ov-note{
  margin-top:34px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:24px;
}
.seal{
  flex:0 0 auto;width:62px;height:62px;
  display:grid;place-items:center;
  border:2px solid var(--red);color:var(--red);
  font-family:var(--serif);font-size:32px;line-height:1;
  transform:rotate(-3deg);opacity:.9;
}
.ov-note p{font-size:22px;line-height:1.7;color:var(--muted)}

/* ================= 景点 ================= */
.spot{padding:76px 90px 56px}
.spot-head{display:flex;align-items:flex-end;gap:30px}
.spot-num{
  font-family:var(--serif);font-size:118px;line-height:.78;font-weight:700;
  color:transparent;-webkit-text-stroke:1.4px rgba(23,19,15,.26);
  letter-spacing:-.01em;flex:0 0 auto;width:172px;
}
.spot-title{flex:1;padding-bottom:4px}
.spot-title .eyebrow{margin-bottom:8px}
.spot-title h2{
  font-family:var(--serif);font-size:74px;line-height:1.02;
  letter-spacing:.04em;font-weight:700;
}
.spot-title .en{margin-top:10px}
.spot-meta{width:262px;flex:0 0 auto;padding-bottom:6px}
.chip{
  display:flex;justify-content:flex-end;align-items:baseline;gap:12px;
  padding:5px 0;border-bottom:1px solid var(--line);
  font-size:19px;
}
.chip:first-child{padding-top:0}
.chip em{font-style:normal;font-size:15px;letter-spacing:.14em;color:var(--muted)}
.chip b{font-weight:600;letter-spacing:.02em;font-size:22px}

.shot{margin-top:28px}
.shot-frame{
  position:relative;width:1170px;height:480px;overflow:hidden;
  background:var(--paper-2);
}
.shot-main{
  width:100%;height:100%;object-fit:cover;object-position:50% 42%;
  cursor:zoom-in;transition:transform 1.2s cubic-bezier(.2,.8,.2,1);
}
.shot-frame:hover .shot-main{transform:scale(1.02)}
.shot-cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:70px 28px 20px;
  font-size:22px;letter-spacing:.04em;color:#FBF6EC;
  text-shadow:0 2px 12px rgba(0,0,0,.8);
  background:linear-gradient(0deg,rgba(6,5,3,.86) 0%,rgba(6,5,3,.45) 42%,rgba(6,5,3,0) 100%);
  pointer-events:none;
}
.shot-thumbs{position:absolute;right:20px;bottom:18px;display:flex;gap:9px}
.shot-thumbs button{
  width:86px;height:58px;padding:0;border:2px solid rgba(255,255,255,.45);
  background:none;overflow:hidden;cursor:pointer;opacity:.72;
  transition:opacity .3s ease,border-color .3s ease,transform .3s ease;
}
.shot-thumbs button img{width:100%;height:100%;object-fit:cover}
.shot-thumbs button:hover{opacity:1;transform:translateY(-3px)}
.shot-thumbs button.is-active{border-color:var(--gold-l);opacity:1}

.spot-grid{
  margin-top:32px;
  display:grid;grid-template-columns:664px 1fr;gap:54px;align-items:start;
}
.spot-copy p{
  font-size:22px;line-height:1.88;color:var(--ink-2);
  margin-bottom:14px;text-align:justify;
}
.spot-copy .tip{
  margin-top:16px;padding:12px 0 12px 20px;
  border-left:3px solid var(--red);
  color:var(--ink);font-size:22px;line-height:1.8;
}
.tip b{
  font-family:var(--serif);color:var(--red);letter-spacing:.08em;
  margin-right:10px;font-size:22px;
}

.spot-info{display:flex;flex-direction:column;gap:22px}
.info-card{border-top:1px solid var(--ink);padding-top:14px}
.info-card h3{
  font-family:var(--serif);font-size:23px;letter-spacing:.16em;
  font-weight:700;margin-bottom:10px;
}
.info-card p{font-size:22px;line-height:1.78;color:var(--ink-2);text-align:justify}
.info-card b{color:var(--red);font-weight:600}

/* ================= 行程 ================= */
.plan{padding-top:96px}
.plan-days{
  margin-top:40px;
  display:grid;grid-template-columns:1fr 1fr;gap:0 64px;
}
.day{padding:22px 0 24px;border-top:1px solid var(--line-2)}
.day-num{font-size:15px;letter-spacing:.3em;color:var(--red)}
.day h3{
  font-family:var(--serif);font-size:27px;line-height:1.35;
  margin:8px 0 12px;letter-spacing:.02em;
}
.day ul{list-style:none}
.day li{
  display:flex;gap:14px;
  font-size:22px;line-height:1.7;color:var(--ink-2);
  margin-bottom:6px;
}
.day time{
  flex:0 0 auto;font-variant-numeric:tabular-nums;
  color:var(--gold);font-size:19px;letter-spacing:.04em;padding-top:3px;
}

.planner{
  margin-top:36px;padding:28px 40px 30px;
  background:var(--paper-2);
  border:1px solid rgba(23,19,15,.08);
  display:grid;grid-template-columns:600px 1fr;gap:48px;
}
.planner-h{font-family:var(--serif);font-size:26px;letter-spacing:.1em}
.planner-hint{font-size:22px;color:var(--muted);margin:6px 0 16px}
.planner-list{display:flex;flex-wrap:wrap;gap:10px}
.pick{
  display:flex;align-items:center;gap:10px;
  padding:9px 16px;border:1px solid var(--line-2);
  background:rgba(255,255,255,.45);
  font-size:21px;cursor:pointer;user-select:none;
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.pick em{font-style:normal;font-size:15px;color:var(--muted)}
.pick input{
  appearance:none;-webkit-appearance:none;
  width:19px;height:19px;flex:0 0 auto;
  border:1px solid var(--ink-2);position:relative;cursor:pointer;
  background:transparent;transition:background .2s ease,border-color .2s ease;
}
.pick input:checked{background:var(--red);border-color:var(--red)}
.pick input:checked::after{
  content:"";position:absolute;left:5px;top:1px;width:6px;height:11px;
  border:solid #fff;border-width:0 2px 2px 0;transform:rotate(42deg);
}
.pick.on{border-color:var(--red);color:var(--red);background:rgba(166,51,31,.07)}
.pick.on em{color:var(--red);opacity:.7}

.planner-out{border-left:1px solid var(--line-2);padding-left:44px}
.out-top{display:flex;align-items:flex-start;gap:56px}
.out-hours strong,.out-days strong{
  display:block;
  font-family:var(--serif);font-size:56px;line-height:1;letter-spacing:.01em;
}
.out-hours span,.out-days span{
  display:block;font-size:16px;letter-spacing:.1em;color:var(--muted);margin-top:8px;
}
.out-line{margin-top:18px;font-size:22px;line-height:1.7;color:var(--ink-2)}
.out-order{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;list-style:none}
.out-order li{
  font-size:19px;letter-spacing:.04em;padding:4px 12px;
  border:1px solid var(--line-2);color:var(--ink-2);
}
.out-order li.is-first{border-color:var(--red);color:var(--red)}

/* ================= 贴士 ================= */
.tips{padding:96px 90px 60px}
.tips-grid{
  margin-top:40px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:48px;
}
.tip-no{
  font-family:var(--serif);font-size:54px;line-height:1;
  color:var(--gold);opacity:.85;
}
.tip-card h3{
  font-family:var(--serif);font-size:29px;line-height:1.4;
  margin:12px 0 18px;letter-spacing:.03em;
}
.tip-card ul{list-style:none}
.tip-card li{
  position:relative;padding-left:22px;
  font-size:22px;line-height:1.78;color:var(--ink-2);
  margin-bottom:10px;
}
.tip-card li::before{
  content:"";position:absolute;left:0;top:13px;
  width:7px;height:7px;background:var(--red);transform:rotate(45deg);
}
.tips-note{
  margin-top:34px;padding-top:28px;border-top:1px solid var(--line);
}
.tips-note p{
  font-family:var(--serif);font-size:26px;line-height:1.95;
  color:var(--ink);max-width:1120px;
}

/* 速查表 */
.quick{margin-top:32px}
.quick-head{
  display:flex;align-items:baseline;gap:16px;margin-bottom:6px;
}
.quick-head h3{font-family:var(--serif);font-size:25px;letter-spacing:.1em}
.quick-head span{font-size:16px;letter-spacing:.18em;color:var(--muted)}
table.quick-table{
  width:100%;border-collapse:collapse;font-size:22px;
}
.quick-table th{
  text-align:left;font-weight:500;font-size:16px;letter-spacing:.16em;
  color:var(--muted);padding:0 14px 9px 0;border-bottom:1px solid var(--ink-2);
}
.quick-table td{
  padding:9px 14px 9px 0;border-bottom:1px solid var(--line);
  vertical-align:top;line-height:1.5;color:var(--ink-2);
}
.quick-table td:first-child{
  font-family:var(--serif);font-size:23px;letter-spacing:.04em;color:var(--ink);
  white-space:nowrap;
}
.quick-table .num{font-variant-numeric:tabular-nums;white-space:nowrap}

/* ================= 页脚 ================= */
.footer{
  background:#17120E;color:#B9AE9D;
  padding:58px 90px 64px;
  display:flex;justify-content:space-between;gap:50px;align-items:flex-start;
}
.foot-left{width:420px;flex:0 0 420px}
.foot-brand{
  font-family:var(--serif);font-size:30px;letter-spacing:.16em;
  color:#F3EADA;margin-bottom:10px;
}
.foot-left p{font-size:19px;line-height:1.8;color:#8E8272}
.foot-right{flex:1}
.foot-right p{font-size:19px;line-height:1.8;color:#8E8272;margin-bottom:8px}
.foot-right b{color:#C9B896;font-weight:500}

/* ================= 灯箱 ================= */
.lightbox{
  position:fixed;inset:0;z-index:100;
  background:rgba(9,7,5,.95);
  display:flex;align-items:center;justify-content:center;gap:24px;
  padding:60px;
  animation:fade .28s ease;
}
.lightbox[hidden]{display:none}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb-figure{max-width:1180px}
.lb-figure img{
  max-width:100%;max-height:940px;width:auto;height:auto;
  box-shadow:0 30px 90px rgba(0,0,0,.65);
}
.lb-figure figcaption{
  margin-top:18px;display:flex;justify-content:space-between;align-items:baseline;
  font-size:21px;color:#E9E0CF;letter-spacing:.04em;
}
.lb-count{font-size:17px;color:#9C9081;letter-spacing:.14em}
.lb-close{
  position:absolute;top:32px;right:40px;
  width:52px;height:52px;border-radius:50%;
  border:1px solid rgba(255,255,255,.3);background:none;color:#F2EADA;
  font-size:30px;line-height:1;cursor:pointer;transition:background .25s,transform .25s;
}
.lb-close:hover{background:rgba(255,255,255,.12);transform:rotate(90deg)}
.lb-nav{
  width:60px;height:60px;border-radius:50%;flex:0 0 auto;
  border:1px solid rgba(255,255,255,.28);background:none;color:#F2EADA;
  font-size:34px;line-height:1;cursor:pointer;
  transition:background .25s,border-color .25s;
}
.lb-nav:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6)}

/* ================= 进场动画 ================= */
.js .reveal{opacity:0;transform:translateY(26px)}
.js .reveal.in{
  opacity:1;transform:none;
  transition:opacity .9s cubic-bezier(.2,.8,.2,1),transform .9s cubic-bezier(.2,.8,.2,1);
}
.reveal.d1{transition-delay:.08s}
.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-bg img{animation:none}
  .scroll-cue span::after{animation:none;display:none}
  .js .reveal{opacity:1;transform:none;transition:none}
}

@media print{
  html{scroll-behavior:auto}
  .js .reveal{opacity:1 !important;transform:none !important}
  .topbar,.grain,.scroll-cue,.lightbox{display:none !important}
  .screen,.hero{break-after:page}
}

/* 键盘可达性 */
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--red);outline-offset:3px;
}