/* ============================================================
   山谱 SHANPU · 杂志编辑风 Demo
   令牌真相源：小程序 src/uni.scss
   底 #f6f6f4 / 主红 #c81818 / 正文 #17181a / 次要 #5a5e5c
   卡片 18 圆角 · 描边 #f0f0ec（小程序是描边卡不是投影卡）
   ============================================================ */

:root{
  /* —— 与小程序对齐 —— */
  --paper:#f6f6f4;
  --ink:#17181a;
  --red:#c81818;
  --red-bright:#e12b21;
  --red-deep:#b51414;
  --red-tint:#fdf3f2;
  --red-tint-line:#f2d5d1;
  --red-text:#9e2b22;
  --sub:#5a5e5c;
  --hint:#9a9e9c;
  --faint:#c4c8c6;
  --line:#ececea;
  --line-soft:#f0f0ec;
  --chip:#f4f4f1;
  --track:#ececea;

  /* —— 官网专用延展 —— */
  --paper-warm:#f6f6f4;   /* 杂志纸面（Hero/Footer 专用） */
  --ink-2:#232322;       /* 面板深底 */
  --ink-3:#2f2f2d;
  --serif:"SHANPU SERIF","Noto Serif SC","Songti SC",serif;
  --sans:"SHANPU SANS","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"SHANPU MONO","Oswald","DIN Alternate",sans-serif;
  --pad:80px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{display:block;width:100%;height:100%;object-fit:cover}
a{color:inherit;text-decoration:none}
.mono{font-family:var(--mono);letter-spacing:.08em}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:15px 32px;border-radius:999px;
  background:var(--red);color:#fff;
  font-size:16px;font-weight:600;
  transition:transform .3s cubic-bezier(.2,.8,.3,1),box-shadow .3s,background .3s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(200,24,24,.26)}
.btn-sm{padding:11px 22px;font-size:14px}
.btn-ghost{
  background:transparent;color:var(--ink);
  box-shadow:inset 0 0 0 1.5px var(--ink);
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);box-shadow:inset 0 0 0 1.5px var(--ink),0 10px 24px rgba(27,26,23,.2)}
.btn-white{background:#fff;color:var(--red)}
.btn-white:hover{box-shadow:0 10px 24px rgba(90,10,4,.3)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;padding:20px var(--pad);
  background:rgba(246,246,244,.9);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,box-shadow .3s;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 20px rgba(27,26,23,.05)}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:8px;
  background:var(--red);color:#fff;
  font-family:var(--serif);font-weight:900;font-size:20px;
  flex:none;
}
.brand-mark.sm{width:28px;height:28px;border-radius:7px;font-size:16px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-family:var(--serif);font-weight:900;font-size:20px}
.brand-text i{font-style:normal;font-size:9px;font-weight:500;color:var(--hint);letter-spacing:.06em}
.nav{display:flex;gap:36px;margin-left:auto}
.nav a{font-size:15px;font-weight:500;color:#17181a;position:relative;padding:4px 0}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:2px;background:var(--red);
  transition:width .3s cubic-bezier(.2,.8,.3,1);
}
.nav a:hover::after{width:100%}

/* ---------- Hero ---------- */
.hero{
  display:flex;align-items:center;gap:72px;
  padding:72px var(--pad) 88px;
  max-width:1600px;margin:0 auto;
}
.hero-left{flex:1;display:flex;flex-direction:column;gap:30px}
.kicker{display:flex;align-items:center;gap:12px;font-size:13px;font-weight:600;color:var(--red)}
.kicker .bar{width:6px;height:22px;background:var(--red)}
.hero-title{
  font-family:var(--serif);font-weight:900;font-size:clamp(46px,5.2vw,72px);
  line-height:1.28;letter-spacing:-.01em;
}
.hero-sub{font-size:17px;line-height:1.78;color:var(--sub);max-width:600px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-meta{font-size:13px;font-weight:500;color:var(--hint)}

/* Hero 杂志封面 —— 立起来的一本「路书」，下方叠三本旧册 */
.cover{
  width:462px;flex:none;
  perspective:1500px;
}
.cover-cap{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  margin-bottom:36px;padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.cc-k{font-family:var(--serif);font-weight:900;font-size:17px;letter-spacing:.04em}
.cc-t{font-size:11px;font-weight:500;color:var(--hint);transition:color .4s}
.cover:hover .cc-t{color:var(--red)}
.book-stand{position:relative;transform-style:preserve-3d}
/* 落地投影：把书「放」在桌面上，不再悬浮 */
.book-stand::after{
  content:"";position:absolute;left:4%;right:4%;bottom:-16px;height:30px;z-index:0;
  background:radial-gradient(ellipse at center,rgba(23,24,26,.26) 0%,rgba(23,24,26,0) 72%);
  transition:opacity .7s;
}
.cover:hover .book-stand::after{opacity:.7}

/* 立着的主书 */
.book-main{
  position:relative;
  display:flex;
  background:#fff;
  border-radius:5px 9px 9px 5px;
  box-shadow:
    0 34px 64px -16px rgba(26,23,18,.36),
    0 5px 12px rgba(26,23,18,.1);
  transform-origin:bottom center;
  transition:transform .7s cubic-bezier(.2,.8,.3,1),box-shadow .7s;
  z-index:3;
}
/* 书脊：加厚 + 竖排字 + 上下勒口 */
.book-spine{
  width:26px;flex:none;
  border-radius:5px 0 0 5px;
  background:linear-gradient(90deg,#B8912A 0%,#E8CE7A 26%,#C9A227 58%,#8E6E14 100%);
  position:relative;
  display:flex;align-items:center;justify-content:center;
}
.book-spine span{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-size:9px;font-weight:700;letter-spacing:.24em;
  color:rgba(70,48,0,.52);
}
.book-spine::before,.book-spine::after{
  content:"";position:absolute;left:0;right:0;height:13px;
}
.book-spine::before{top:0;background:linear-gradient(90deg,rgba(255,255,255,.3),rgba(255,255,255,0))}
.book-spine::after{bottom:0;background:linear-gradient(90deg,rgba(0,0,0,.18),rgba(0,0,0,0))}

.book-page{
  flex:1;padding:14px;display:flex;flex-direction:column;gap:12px;min-width:0;
  position:relative;z-index:2;background:#fff;
}
/* 书口：右侧露出的页块 */
.book-edge{
  width:9px;flex:none;border-radius:0 5px 5px 0;
  background:repeating-linear-gradient(to bottom,#fff 0 3px,#e6e6e1 3px 4px,#fff 4px 7px);
  box-shadow:inset 1px 0 2px rgba(0,0,0,.09);
}

.cover:hover .book-main{
  transform:rotateY(-13deg) rotateX(3deg) translateY(-12px);
  box-shadow:
    0 52px 96px -20px rgba(26,23,18,.46),
    0 7px 16px rgba(26,23,18,.12);
}

/* 红丝带书签：从书页间伸出，把品牌红带进 Hero（挂在 book-page 层，3D 翻转时不丢） */
.ribbon{
  position:absolute;top:-46px;right:40px;
  width:15px;height:104px;border-radius:2px 2px 0 0;
  background:linear-gradient(90deg,#b51414 0%,#e12b21 45%,#c81818 100%);
  box-shadow:0 6px 16px rgba(120,12,8,.3);
  transition:transform .8s cubic-bezier(.2,.8,.3,1);
}
.cover:hover .ribbon{transform:rotate(-4deg) translateY(-6px)}

/* 封面：图出血 + 上下双向压暗（保证白字对比度）+ 刊头压图 */
.cover-img{
  position:relative;aspect-ratio:432/610;
  background:url("assets/img/cover-ridge.jpg") center/cover no-repeat;
  border-radius:2px;overflow:hidden;
}
.cover-img::before{
  content:"";position:absolute;left:0;right:0;top:0;height:48%;z-index:0;
  background:linear-gradient(to bottom,rgba(23,24,26,.58),rgba(23,24,26,0));
}
.cover-img::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:54%;z-index:0;
  background:linear-gradient(to top,rgba(23,24,26,.86),rgba(23,24,26,0));
}
.cover-tag{
  position:absolute;top:16px;left:16px;z-index:1;
  padding:7px 12px;background:var(--red);color:#fff;
  font-size:12px;font-weight:600;
}
/* 刊头：山谱 大字压在图上 */
.masthead{
  position:absolute;left:0;right:0;top:23%;z-index:1;
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.masthead b{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(46px,4.6vw,66px);line-height:1;
  letter-spacing:.06em;color:#fff;
  text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.mh-rule{display:block;width:52px;height:3px;background:#fff;opacity:.9}
.masthead em{
  font-style:normal;font-family:var(--mono);
  font-size:11px;font-weight:500;letter-spacing:.3em;
  color:rgba(255,255,255,.94);
}
.cover-lede{
  position:absolute;left:22px;right:22px;bottom:22px;z-index:1;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:rgba(255,255,255,.95);
}
.cover-lede::before{
  content:"";display:inline-block;width:16px;height:3px;
  background:var(--red);vertical-align:middle;margin-right:9px;
}

/* 下方叠着的三本旧册（横躺，露出书口，像一摞） */
.book-stack{
  position:relative;height:60px;
  margin:-6px 0 0 12px;
  transform-style:preserve-3d;
  z-index:2;
}
.bk{
  position:absolute;left:0;right:0;bottom:0;
  display:flex;align-items:center;
  padding:0 18px 0 30px;
  border-radius:2px 5px 5px 2px;
  font-size:11px;letter-spacing:.14em;
  color:#8e928f;
  box-shadow:0 3px 8px rgba(26,23,18,.12);
  transition:transform .65s cubic-bezier(.2,.8,.3,1),box-shadow .65s;
  transform-origin:left center;
}
.bk i{font-style:normal}
.bk-1{height:26px;bottom:30px;background:#f6f2e8;transform:translateX(7px)}
.bk-2{height:23px;bottom:15px;background:#edeae2;transform:translateX(4px)}
.bk-3{height:20px;bottom:0;background:#e4e0d4;transform:translateX(0)}

/* 悬停：三本依次向左抽出、错位散开 */
.cover:hover .bk-1{transform:translateX(-36px) translateY(-5px) rotate(-1.8deg)}
.cover:hover .bk-2{transform:translateX(-19px) translateY(-1px) rotate(1deg)}
.cover:hover .bk-3{transform:translateX(3px) translateY(2px) rotate(-.7deg)}

/* 抽出后露出书口页边线 */
.bk::after{
  content:"";position:absolute;right:8px;top:4px;bottom:4px;width:1px;
  background:repeating-linear-gradient(to bottom,rgba(0,0,0,.1) 0 3px,transparent 3px 6px);
}
/* 旧册书脊：红 / 墨 / 金，让「一摞」读得出层次而不是三条灰线 */
.bk::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:9px;
  border-radius:2px 0 0 2px;
}
.bk-1::before{background:linear-gradient(90deg,#c81818 0%,#e12b21 45%,#a31414 100%)}
.bk-2::before{background:linear-gradient(90deg,#17181a 0%,#3a3c3f 50%,#0f1012 100%)}
.bk-3::before{background:linear-gradient(90deg,#C9A227 0%,#E8CE7A 45%,#8E6E14 100%)}

.book-foot{
  display:flex;justify-content:space-between;
  font-size:11px;font-weight:500;color:var(--hint);
}

/* ---------- 区块通用 ---------- */
.section{max-width:1600px;margin:0 auto;padding:96px var(--pad);display:flex;flex-direction:column;gap:52px}
.sec-head{display:flex;flex-direction:column;gap:14px}
.sec-head.row{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.kicker-r{font-size:13px;font-weight:600;color:var(--red)}
.sec-title{font-family:var(--serif);font-weight:900;font-size:clamp(30px,3vw,40px);line-height:1.25}
.more-link{font-size:14px;font-weight:600;color:var(--red);border-bottom:1px solid rgba(200,24,24,.35);padding-bottom:3px;transition:border-color .3s}
.more-link:hover{border-bottom-color:var(--red)}

/* ---------- 功能卡 ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.fcard{
  background:#fff;border-radius:16px;padding:30px;
  display:flex;flex-direction:column;gap:14px;
  cursor:pointer;
  border:2px solid transparent;
  transition:transform .4s cubic-bezier(.2,.8,.3,1),box-shadow .4s,border-color .3s;
}
.fcard:hover{transform:translateY(-8px);box-shadow:0 24px 44px -12px rgba(26,23,18,.2)}
.fcard.active{border-color:var(--red);box-shadow:0 24px 48px -12px rgba(200,24,24,.22)}
.fcard-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.fcard-top h3{font-family:var(--serif);font-weight:700;font-size:20px}
.fcard-top .no{font-family:var(--serif);font-weight:700;font-size:14px;color:#c4c8c6}
.fcard-desc{font-size:14px;line-height:1.72;color:var(--sub)}

.hint-pill{
  align-self:flex-start;
  padding:6px 14px;border-radius:999px;background:var(--chip);
  font-size:12px;font-weight:500;color:#5a5e5c;
}

/* ---------- hover 详情面板（页面延展，不套黑底框） ---------- */
.panel{
  display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:44px;
  transition:opacity .5s ease,transform .5s cubic-bezier(.2,.8,.3,1);
}
html.js .panel:not(.show){opacity:0;transform:translateY(16px)}
.panel.show{opacity:1;transform:none}
.panel-left{display:flex;flex-direction:column;gap:14px;min-width:0}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.panel-tag{font-size:12px;font-weight:600;color:var(--red)}
/* 画布宽 390 = 小程序 iPhone 稿基准，等比放大到面板里 */
.panel-stage{
  position:relative;width:100%;aspect-ratio:390/322;
  overflow:hidden;
}
.panel-stage svg{width:100%;height:100%;display:block}
.stage-note{
  font-size:11.5px;font-weight:600;color:var(--hint);
  letter-spacing:.02em;
}
.panel-stage.is-planned{box-shadow:0 0 0 2px var(--red-tint-line)}
.stage-badge{
  position:absolute;right:16px;top:16px;z-index:2;
  padding:5px 11px;border-radius:999px;background:#fdf3f2;
  border:1px solid #f2d5d1;color:#9e2b22;
  font-size:11px;font-weight:700;
}
.panel-right{display:flex;flex-direction:column;gap:20px;justify-content:center}
.panel-no{font-family:var(--serif);font-weight:700;font-size:13px;color:var(--red)}
.panel-title{font-family:var(--serif);font-weight:900;font-size:34px;color:var(--ink);line-height:1.25}
.panel-desc{font-size:16px;line-height:1.9;color:var(--sub)}
.panel-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.panel-list li{display:flex;gap:12px;font-size:14px;line-height:1.6;color:#454a47}
.panel-list b{font-family:var(--serif);font-weight:700;font-size:12px;color:var(--red);flex:none;width:22px;padding-top:2px}

/* 面板内动画（进入即播）
   注意：.an 基类不要设 opacity:0 —— 轨迹线/进度条类关键帧不含 opacity，
   基类若给 0 会让它们永远不可见。淡入由 popIn / fadeUp 自己的关键帧负责。 */
.panel.show .an{animation-play-state:running}
.an{animation-duration:3s;animation-iteration-count:infinite;animation-timing-function:ease-out;animation-fill-mode:both;animation-play-state:paused}
@keyframes popIn{0%{opacity:0;transform:translateY(14px) scale(.96)}14%{opacity:1;transform:none}26%{transform:none}100%{opacity:1;transform:none}}
@keyframes drawLine{0%{opacity:1;stroke-dashoffset:var(--len)}22%,100%{opacity:1;stroke-dashoffset:0}}
@keyframes growCircle{0%{opacity:1;stroke-dashoffset:var(--dash)}26%,100%{opacity:1;stroke-dashoffset:0}}
@keyframes growBar{0%{opacity:1;transform:scaleX(0)}22%,100%{opacity:1;transform:scaleX(1)}}
@keyframes slideX{0%{opacity:1;transform:translateX(0)}26%,100%{opacity:1;transform:translateX(var(--to))}}
@keyframes fadeUp{0%{opacity:0;transform:translateY(10px)}18%,100%{opacity:1;transform:none}}

/* ---------- 路线封面卡（一行 5 个 · 两行） ---------- */
.routes{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.rcard-frame{
  position:relative;aspect-ratio:3/4;
  background:#fff;padding:8px;border-radius:4px;
  display:flex;
  transition:transform .5s cubic-bezier(.2,.8,.3,1),box-shadow .5s;
}
.rcard-frame:hover{transform:translateY(-8px);box-shadow:0 30px 56px -16px rgba(26,23,18,.34)}
.rcard-img{position:absolute;inset:12px;border-radius:2px;overflow:hidden}
.rcard-img img{transition:transform .9s cubic-bezier(.2,.8,.3,1)}
.rcard-frame:hover .rcard-img img{transform:scale(1.06)}
/* 红框裱框 */
.rcard-frame::after{
  content:"";position:absolute;inset:8px;
  border:4px solid var(--red);border-radius:0;pointer-events:none;z-index:4;
}
.rcard-top{position:absolute;left:0;right:0;top:0;height:64px;z-index:2;
  background:linear-gradient(to bottom,rgba(23,21,18,.5),rgba(23,21,18,0))}
.rcard-scrim{position:absolute;left:0;right:0;bottom:0;height:190px;z-index:2;
  background:linear-gradient(to top,rgba(23,21,18,.9) 0%,rgba(23,21,18,.45) 45%,rgba(23,21,18,0) 100%)}
.rcard-mark{position:absolute;top:22px;left:20px;z-index:3;display:flex;align-items:center;gap:6px;
  font-size:10.5px;font-weight:600;color:#fff;letter-spacing:1px}
.rcard-mark i{width:16px;height:3px;background:var(--red)}
.rcard-diff{position:absolute;top:20px;right:20px;z-index:3;
  padding:4px 9px;border-radius:999px;
  background:rgba(23,21,18,.42);color:#fff;font-size:11px;font-weight:600;backdrop-filter:blur(4px)}
.rcard-info{position:absolute;left:20px;right:20px;bottom:20px;z-index:3;
  display:flex;flex-direction:column;gap:9px}
.red-rule{display:block;width:26px;height:3px;background:var(--red)}
.rcard-info h3{font-family:var(--serif);font-weight:900;font-size:23px;line-height:1.24;color:#fff}
.rcard-meta{display:flex;align-items:flex-start;gap:5px;font-size:11.5px;font-weight:500;color:rgba(255,255,255,.88);line-height:1.5}
.rcard-meta svg{width:12px;height:12px;flex:none;margin-top:2px}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chips span{padding:4px 9px;border-radius:999px;background:rgba(255,255,255,.2);
  color:#fff;font-size:10.5px;font-weight:500;backdrop-filter:blur(4px)}

/* ---------- 数据带 ---------- */
.stats{background:var(--ink);color:#fff;padding:80px var(--pad);
  max-width:1600px;margin:0 auto;border-radius:0}
.kicker-w{font-size:13px;font-weight:600;color:var(--red-bright);margin-bottom:48px}
.stats-row{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column;gap:8px}
.stat b{font-family:var(--serif);font-weight:900;font-size:56px;line-height:1;color:var(--red-bright)}
.stat span{font-size:14px;font-weight:500;color:#c4c8c6}
.stats-note{margin-top:48px;font-size:15px;line-height:1.75;color:#c4c8c6;max-width:820px}

/* ---------- CTA ---------- */
.cta{
  display:flex;align-items:center;justify-content:space-between;gap:64px;
  background:var(--red);color:#fff;
  padding:96px var(--pad);
  max-width:1600px;margin:0 auto;
}
.cta-left{display:flex;flex-direction:column;gap:26px;align-items:flex-start}
.kicker-c{font-size:13px;font-weight:600;color:#FFD9D2}
.cta h2{font-family:var(--serif);font-weight:900;font-size:clamp(34px,3.6vw,48px);line-height:1.2}
.cta-sub{font-size:16px;line-height:1.75;color:#FFE3DE;max-width:640px}
.qr{
  width:172px;flex:none;padding:14px;background:#fff;border-radius:20px;
  display:flex;flex-direction:column;align-items:center;gap:9px;
  box-shadow:0 18px 36px -6px rgba(90,10,4,.35);
}
.qr img{width:100%;height:auto;border-radius:8px;display:block}
.qr figcaption{font-size:12px;font-weight:500;letter-spacing:.02em;color:var(--hint);text-align:center}

/* ---------- Footer ---------- */
.site-footer{background:var(--paper);padding:72px var(--pad) 40px;max-width:1600px;margin:0 auto;
  display:flex;flex-direction:column;gap:44px}
.f-top{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap}
.f-brand{display:flex;flex-direction:column;gap:14px}
.f-logo{display:flex;align-items:center;gap:10px}
.f-logo b{font-family:var(--serif);font-weight:900;font-size:18px}
.f-brand p{font-size:13px;color:var(--hint)}
.f-links{display:flex;gap:96px}
.f-links>div{display:flex;flex-direction:column;gap:12px}
.f-links h4{font-size:13px;font-weight:600}
.f-links a{font-size:14px;color:#5a5e5c;transition:color .25s}
.f-links a:hover{color:var(--red)}
.f-div{height:1px;background:var(--line)}
.f-bottom{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;
  font-size:12px;color:var(--faint)}
.f-giant{
  font-family:var(--serif);font-weight:900;font-size:clamp(90px,14vw,168px);
  line-height:1;text-align:center;color:rgba(27,26,23,.07);
  user-select:none;pointer-events:none;
}

/* ---------- 滚动进场 ---------- */
.reveal{transition:opacity .8s cubic-bezier(.2,.8,.3,1),transform .8s cubic-bezier(.2,.8,.3,1)}
html.js .reveal:not(.in){opacity:0;transform:translateY(26px)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1400px){
  .panel{grid-template-columns:minmax(0,1fr) 320px;gap:32px}
}
@media (max-width:1180px){
  :root{--pad:48px}
  .hero{flex-direction:column;align-items:flex-start;gap:48px}
  .cover{width:100%;max-width:460px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .panel{grid-template-columns:1fr}
  .routes{grid-template-columns:repeat(3,1fr)}
  .nav{display:none}
}
@media (max-width:680px){
  :root{--pad:24px}
  .cards{grid-template-columns:1fr}
  .routes{grid-template-columns:repeat(2,1fr)}
  .stats-row{gap:28px}
  .stat b{font-size:42px}
  .cta{flex-direction:column;align-items:flex-start}
  .f-links{gap:48px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* ---------- 无障碍 / 无 JS 兜底 ---------- */
.skip-link{position:absolute;left:-9999px;top:0;z-index:99;
  background:var(--red);color:#fff;padding:10px 16px;font-size:13px}
.skip-link:focus{left:12px;top:12px}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}

/* ---------- 功能卡静态正文（搜索引擎与无 JS 可读；触屏端直接展开） ---------- */
.fcard-body{display:none;flex-direction:column;gap:10px}
html:not(.js) .fcard-body{display:flex}
.fcard-body p{font-size:13px;line-height:1.85;color:var(--sub)}
.fcard-body ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.fcard-body li{display:flex;gap:9px;font-size:12.5px;line-height:1.7;color:#5a5e5c}
.fcard-body li b{font-family:var(--serif);font-weight:700;font-size:11px;color:var(--red);flex:none;padding-top:2px}

/* ---------- 路线索引表 ---------- */
.route-index{margin-top:44px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:26px 30px;overflow-x:auto}
.route-index table{width:100%;min-width:720px;border-collapse:collapse;font-size:13px}
.route-index caption{text-align:left;font-family:var(--serif);font-weight:700;
  font-size:15px;color:var(--ink);padding-bottom:16px}
.route-index th,.route-index td{padding:11px 12px;text-align:left;
  border-bottom:1px solid var(--line);color:var(--sub);white-space:nowrap}
.route-index thead th{font-size:11.5px;font-weight:600;color:var(--hint);
  letter-spacing:.06em;border-bottom:2px solid var(--ink)}
.route-index tbody th{font-family:var(--serif);font-weight:700;font-size:14px;color:var(--ink)}
.route-index tbody tr:hover th,.route-index tbody tr:hover td{background:#fafaf8}
.route-index tbody tr:last-child th,.route-index tbody tr:last-child td{border-bottom:none}
.route-index .idx-note{margin-top:16px;font-size:12px;line-height:1.75;color:var(--hint);max-width:900px}

/* ---------- 常见问题 ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:18px 4px}
.faq summary{cursor:pointer;list-style:none;display:flex;align-items:baseline;
  justify-content:space-between;gap:24px;
  font-family:var(--serif);font-weight:700;font-size:17px;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:18px;color:var(--red);flex:none}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:12px;font-size:14px;line-height:1.9;color:var(--sub);max-width:900px}

/* ---------- 关于 ---------- */
.f-about{flex:1 1 420px;max-width:560px}
.f-about h2{font-family:var(--serif);font-weight:900;font-size:17px;margin-bottom:12px}
.f-about p{font-size:13px;line-height:1.9;color:var(--sub);margin-bottom:10px}

@media (max-width:1180px){
  .fcard-body{display:flex}
  .hint-pill{display:none}
}
@media (max-width:680px){
  .route-index{padding:18px 20px}
  .faq summary{font-size:15px}
}