/* ============================================================
   jmmaanhua.cn · JM漫画 档案室
   骨架D：顶部窄条铭牌(不吸顶) + 上下堆叠hero(通栏大字→横滑卷宗)
         + 调阅时间轴 + 借阅规则章程表 + 取件条下载 + 索引抽屉(tab切换) + 归还卡
   配色：牛皮纸 #ead9b8 / 档案褐 #33271a / 印章橙红 #c65a2e(logo主色) / 纸白 #f5efe2
   ============================================================ */
:root{
  --kraft:#ead9b8;
  --kraft2:#e2cda2;
  --brown:#33271a;
  --brown2:#57462f;
  --stamp:#c65a2e;
  --stamp-deep:#9e4319;
  --paper:#f5efe2;
  --muted:#8d7c62;
  --line:rgba(51,39,26,.18);
  --sans:'Noto Sans SC',sans-serif;
  --mono:'Roboto Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--kraft);color:var(--brown);line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button{font-family:inherit;border:0;background:none;cursor:pointer}

/* 纸纹理 */
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;background-image:repeating-linear-gradient(0deg,rgba(51,39,26,.025) 0 1px,transparent 1px 3px)}
main,header,footer{position:relative;z-index:1}

/* ---------- 顶部窄条铭牌（不吸顶） ---------- */
.plate{background:var(--brown);border-bottom:5px double var(--stamp)}
.plate-inner{max-width:1220px;margin:0 auto;padding:14px 26px;display:flex;align-items:center;gap:28px}
.p-brand{display:flex;align-items:center;gap:12px}
.p-brand img{width:42px;height:42px;border-radius:8px;box-shadow:0 0 0 2px rgba(198,90,46,.6)}
.p-txt b{display:block;color:var(--paper);font-size:19px;font-weight:900;letter-spacing:.14em}
.p-txt i{display:block;font-style:normal;font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;color:var(--stamp);margin-top:1px}
.p-nav{display:flex;gap:22px;margin-left:auto}
.p-nav a{color:rgba(245,239,226,.85);font-size:14.5px;padding:5px 2px;border-bottom:2px solid transparent;transition:.25s}
.p-nav a:hover{color:var(--stamp);border-bottom-color:var(--stamp)}
.p-cta{background:var(--stamp);color:#fff;font-weight:700;font-size:14.5px;padding:10px 22px;border-radius:4px;transition:.25s;flex:none}
.p-cta:hover{background:var(--stamp-deep);transform:translateY(-2px)}
.p-toggle{display:none;flex-direction:column;gap:5px;padding:8px;margin-left:auto}
.p-toggle span{width:22px;height:2px;background:var(--paper);border-radius:2px}
.m-menu{display:none;background:var(--brown);border-bottom:3px solid var(--stamp)}
.m-menu a{display:block;padding:14px 24px;color:rgba(245,239,226,.9);border-bottom:1px dashed rgba(245,239,226,.15)}
.m-menu .m-cta{color:var(--stamp);font-weight:700;border-bottom:0}

/* ---------- hero：上下堆叠 ---------- */
.hero{max-width:1220px;margin:0 auto;padding:64px 26px 44px;text-align:center}
.h-code{font-family:var(--mono);font-size:13px;letter-spacing:.3em;color:var(--stamp-deep);margin-bottom:22px}
.h-title{font-size:clamp(64px,10vw,124px);font-weight:900;line-height:1;letter-spacing:.04em;color:var(--brown)}
.h-title span{color:var(--stamp)}
.h-sub{margin-top:16px;font-size:clamp(15px,2vw,19px);font-weight:700;letter-spacing:.3em;color:var(--brown2)}
.h-lead{margin:18px auto 0;max-width:62ch;font-size:15.5px;color:var(--brown2)}
.h-cta{margin-top:30px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.btn-main{display:inline-block;background:var(--stamp);color:#fff;font-weight:700;font-size:16px;padding:15px 36px;border-radius:6px;box-shadow:0 10px 22px rgba(158,67,25,.35);transition:.25s}
.btn-main:hover{background:var(--stamp-deep);transform:translateY(-2px)}
.btn-ghost{display:inline-block;border:2px solid var(--brown);color:var(--brown);font-weight:700;font-size:15px;padding:13px 28px;border-radius:6px;transition:.25s}
.btn-ghost:hover{background:var(--brown);color:var(--paper)}
.h-note{margin-top:14px;font-size:12.5px;color:var(--muted);letter-spacing:.06em}

/* 横滑卷宗（显示宽 280/240/230 ≤ 源宽 450/300/270） */
.hero-drawer{margin-top:44px;display:flex;align-items:center;gap:16px}
.hd-track{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding:14px 6px 26px;scrollbar-width:none;flex:1}
.hd-track::-webkit-scrollbar{display:none}
.file{flex:0 0 auto;width:250px;scroll-snap-align:center;position:relative;background:var(--paper);border:2px solid var(--brown);border-radius:6px;padding:12px 12px 14px;box-shadow:6px 8px 0 rgba(51,39,26,.16);transition:.3s}
.file:hover{transform:translateY(-6px) rotate(-1deg)}
.file-no{display:inline-block;font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--paper);background:var(--stamp);padding:2px 12px;border-radius:3px;margin-bottom:10px}
.file img{width:100%;height:auto;border-radius:3px;border:1px solid var(--line)}
.hd-btn{width:46px;height:46px;border-radius:50%;background:var(--brown);color:var(--paper);font-size:22px;flex:none;box-shadow:0 8px 18px rgba(51,39,26,.3);transition:.25s}
.hd-btn:hover{background:var(--stamp)}
.h-stats{margin-top:30px;display:flex;justify-content:space-around;background:var(--brown);border-radius:10px;padding:24px 16px;box-shadow:0 14px 30px rgba(51,39,26,.25)}
.h-stats li{text-align:center;color:var(--paper)}
.h-stats span,.h-stats b{display:block;font-family:var(--mono);font-size:30px;font-weight:700;color:#e8a06b;line-height:1.2}
.h-stats i{font-style:normal;font-size:13px;letter-spacing:.18em;color:rgba(245,239,226,.75)}

/* ---------- 分节 ---------- */
.sec{max-width:1100px;margin:0 auto;padding:80px 26px}
.sec.alt{background:var(--paper);border-radius:14px;border:2px solid var(--brown);box-shadow:8px 8px 0 rgba(51,39,26,.14)}
.sec-head{margin-bottom:42px}
.sec-en{font-family:var(--mono);font-size:13px;letter-spacing:.3em;color:var(--stamp-deep);margin-bottom:8px}
.sec-head h2{font-size:clamp(27px,3.4vw,38px);font-weight:900;letter-spacing:.1em}
.sec-head h2::after{content:"";display:block;width:58px;height:4px;background:var(--stamp);margin-top:12px;border-radius:2px}
.sec-sub{margin-top:10px;font-size:14px;color:var(--muted);letter-spacing:.1em}

/* ---------- 01 时间轴 ---------- */
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:44px}
.timeline::before{content:"";position:absolute;left:13px;top:8px;bottom:8px;width:2px;background:repeating-linear-gradient(var(--brown) 0 6px,transparent 6px 12px)}
.tl{position:relative;padding-bottom:42px}
.tl:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-38px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--stamp);border:3px solid var(--kraft);box-shadow:0 0 0 2px var(--stamp)}
.tl-no{font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.2em;color:var(--stamp-deep);margin-bottom:6px}
.tl h3{font-size:21px;font-weight:900;margin-bottom:8px}
.tl p{font-size:14.5px;color:var(--brown2);max-width:58ch}

/* ---------- 02 规则章程表 ---------- */
.rule-board{max-width:760px;margin:0 auto}
.rules{width:100%;border-collapse:collapse;border:2px solid var(--brown)}
.rules tr{border-bottom:1px dashed var(--line)}
.rules tr:last-child{border-bottom:0}
.rules th{width:120px;text-align:left;padding:16px 18px;font-size:14px;font-weight:900;letter-spacing:.2em;color:var(--stamp-deep);border-right:2px solid var(--brown);background:var(--kraft);vertical-align:top}
.rules td{padding:16px 20px;font-size:14.5px;color:var(--brown2)}

/* ---------- 03 取件条 ---------- */
.pocket{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.slip-line{background:var(--paper);border:2px solid var(--brown);border-radius:8px;padding:4px;box-shadow:6px 8px 0 rgba(51,39,26,.14)}
.sl{display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:center;padding:20px 22px;border:2px dashed var(--line);border-radius:5px}
.sl-no{font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.16em;color:#fff;background:var(--stamp);padding:6px 12px;border-radius:4px;align-self:start}
.sl-no.alt{background:var(--brown2)}
.sl-body b{display:block;font-size:17px;font-weight:900;margin-bottom:4px}
.sl-body p{font-size:13.5px;color:var(--brown2)}
.pocket-tip{text-align:center;font-size:13px;color:var(--muted);letter-spacing:.12em}

/* ---------- 04 索引抽屉（tab） ---------- */
.drawer{max-width:760px;margin:0 auto}
.drawer-tabs{display:flex;gap:8px;flex-wrap:wrap}
.d-tab{font-size:14.5px;font-weight:700;letter-spacing:.1em;padding:11px 26px;border:2px solid var(--brown);border-bottom:0;border-radius:8px 8px 0 0;background:var(--kraft2);color:var(--brown2);transition:.25s;position:relative;top:2px}
.d-tab.active{background:var(--paper);color:var(--stamp-deep)}
.d-tab::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--stamp);margin-right:8px;vertical-align:middle}
.drawer-panel{background:var(--paper);border:2px solid var(--brown);border-radius:0 10px 10px 10px;padding:30px 30px 26px;box-shadow:8px 8px 0 rgba(51,39,26,.14)}
.drawer-panel h3{font-size:19px;font-weight:900;margin-bottom:10px}
.drawer-panel p{font-size:14.5px;color:var(--brown2)}

/* ---------- 05 归还卡 ---------- */
.r-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:880px;margin:0 auto}
.r-card{background:var(--paper);border:2px solid var(--brown);border-radius:8px;padding:22px 22px 20px;position:relative;transition:.3s;box-shadow:5px 6px 0 rgba(51,39,26,.12)}
.r-card:hover{transform:translateY(-5px) rotate(.5deg)}
.rc-head{display:flex;align-items:center;gap:12px;margin-bottom:10px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.rc-head img{width:40px;height:40px;border-radius:6px;border:2px solid var(--stamp)}
.rc-head b{display:block;font-size:15px;line-height:1.3}
.rc-head time{font-family:var(--mono);font-size:12px;color:var(--muted)}
.rc-stamp{position:absolute;right:16px;bottom:14px;font-size:11.5px;font-weight:700;letter-spacing:.16em;color:var(--stamp);border:2px solid var(--stamp);border-radius:4px;padding:2px 10px;transform:rotate(-8deg);opacity:.8}
.r-card p{font-size:14px;color:var(--brown2);padding-right:70px}

/* ---------- footer ---------- */
.foot{background:var(--brown);color:rgba(245,239,226,.8);margin-top:40px}
.foot-inner{max-width:1100px;margin:0 auto;padding:50px 26px 30px}
.foot-brand{display:flex;align-items:center;gap:14px;padding-bottom:22px;border-bottom:1px solid rgba(245,239,226,.14)}
.foot-brand img{width:42px;height:42px;border-radius:8px}
.foot-brand b{display:block;color:var(--paper);font-size:16px;font-weight:700;letter-spacing:.12em}
.foot-brand span{font-size:12.5px;color:#e8a06b;letter-spacing:.12em}
.foot-nav{display:flex;flex-wrap:wrap;gap:24px;padding:22px 0;font-size:14px}
.foot-nav a{color:rgba(245,239,226,.75);transition:.25s}
.foot-nav a:hover{color:var(--stamp)}
.foot-tip{font-size:12.5px;color:rgba(245,239,226,.55);letter-spacing:.06em}
.foot-copy{margin-top:8px;font-size:12px;color:rgba(245,239,226,.4)}

/* ---------- 悬浮投诉 & 返回顶部 ---------- */
.interaction-complaint-button{position:fixed;right:24px;bottom:110px;z-index:900;display:flex;flex-direction:column;align-items:center;gap:6px;background:var(--stamp);color:#fff;font-size:12px;padding:12px 10px;border-radius:10px;box-shadow:0 10px 24px rgba(158,67,25,.4)}
.interaction-complaint-button img{width:20px;height:20px}
.interaction-complaint-button:hover{background:var(--stamp-deep)}
.back-top{position:fixed;right:24px;bottom:40px;z-index:900;width:44px;height:44px;border-radius:8px;background:var(--brown);color:var(--paper);font-family:var(--sans);font-weight:900;font-size:15px;box-shadow:0 8px 20px rgba(51,39,26,.4);opacity:0;pointer-events:none;transform:translateY(14px);transition:.3s}
.back-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}

/* ---------- 滚动显现 ---------- */
.rev{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.rev.in{opacity:1;transform:none}

/* ---------- 移动端 ≤900 ---------- */
@media (max-width:900px){
  .plate-inner{padding:14px 16px;gap:14px}
  .p-nav{display:none}
  .p-cta{margin-left:0;padding:9px 16px;font-size:13.5px}
  .p-toggle{display:flex}
  .m-menu.open{display:block}
  .hero{padding:44px 18px 34px}
  .h-cta .btn-main,.h-cta .btn-ghost{width:100%;text-align:center}
  .hero-drawer{margin-top:30px}
  .hd-btn{display:none}
  .file{width:216px}
  .h-stats span,.h-stats b{font-size:24px}
  .sec{padding:58px 16px}
  .sec.alt{padding-left:16px;padding-right:16px}
  .timeline{padding-left:36px}
  .tl-dot{left:-30px}
  .rules th{width:86px;font-size:13px;padding:12px 12px}
  .rules td{padding:12px 14px;font-size:13.5px}
  .sl{grid-template-columns:1fr;gap:12px}
  .drawer-tabs{overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px}
  .d-tab{flex:none;padding:10px 20px;font-size:13.5px}
  .drawer-panel{padding:22px 18px}
  .r-cards{grid-template-columns:1fr}
  .r-card p{padding-right:0}
  .rc-stamp{position:static;display:inline-block;margin-top:10px;transform:rotate(-4deg)}
  .interaction-complaint-button{right:14px;bottom:96px}
  .back-top{right:16px;bottom:32px}
}