/* ============================================================
   jmcoomic.cn · jmcomic2 日刊印刷厂
   骨架B：吸顶细条导航(带淡投影) + 居中大字报hero(无图)
         + 胶片横滑样张 + 三栏报纸栅格 + 双栏问答 + 读者来信
   配色：漫画纸白 #f6f1e7 / 印刷橘红 #f06020(logo主色) / 墨黑 #1d1a16 / 版面蓝 #70c0e0(logo辅色)
   ============================================================ */
:root{
  --paper:#f6f1e7;
  --paper2:#efe7d6;
  --ink:#1d1a16;
  --ink2:#3a352e;
  --red:#f06020;
  --red-deep:#c94a12;
  --blue:#70c0e0;
  --muted:#8b8272;
  --line:rgba(29,26,22,.16);
  --sans:'Noto Sans SC',sans-serif;
  --en:'Archivo Black',sans-serif;
  --slab:'Roboto Slab',serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);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}

/* ---------- 吸顶细条导航（带淡投影） ---------- */
.topbar{position:sticky;top:0;z-index:950;background:rgba(246,241,231,.96);backdrop-filter:blur(8px);border-bottom:2px solid var(--ink);box-shadow:0 4px 14px rgba(29,26,22,.10)}
.tb-brand,.tb-inner{display:flex}
.topbar .tb-inner{max-width:1240px;margin:0 auto;padding:12px 26px;display:flex;align-items:center;gap:30px}
.tb-brand{align-items:center;gap:10px}
.tb-brand img{width:36px;height:36px;border-radius:8px}
.tb-brand span{font-family:var(--en);font-size:19px;letter-spacing:.06em;color:var(--ink)}
.tb-brand i{font-style:normal;color:var(--red)}
.tb-nav{display:flex;gap:24px;margin-left:auto}
.tb-nav a{font-size:14.5px;font-weight:500;color:var(--ink2);padding:6px 2px;border-bottom:2px solid transparent;transition:.25s}
.tb-nav a:hover{color:var(--red-deep);border-bottom-color:var(--red)}
.tb-cta{background:var(--ink);color:var(--paper);font-weight:700;font-size:14px;padding:10px 22px;border-radius:4px;transition:.25s;flex:none}
.tb-cta:hover{background:var(--red)}
.tb-toggle{display:none;flex-direction:column;gap:5px;padding:8px;margin-left:auto}
.tb-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px}
.m-menu{display:none;position:sticky;top:61px;z-index:940;background:var(--paper);border-bottom:2px solid var(--ink);box-shadow:0 8px 18px rgba(29,26,22,.12)}
.m-menu a{display:block;padding:14px 24px;border-bottom:1px dashed var(--line);font-weight:500}
.m-menu .m-cta{color:var(--red-deep);font-weight:700;border-bottom:0}

/* ---------- 大字报 hero ---------- */
.hero{position:relative;max-width:1100px;margin:0 auto;padding:88px 26px 60px;text-align:center;overflow:hidden}
.halftone{position:absolute;inset:0;background-image:radial-gradient(rgba(29,26,22,.10) 1.2px,transparent 1.2px);background-size:14px 14px;mask-image:radial-gradient(ellipse 70% 62% at 50% 38%,#000 30%,transparent 78%);-webkit-mask-image:radial-gradient(ellipse 70% 62% at 50% 38%,#000 30%,transparent 78%);pointer-events:none}
.hero-date{position:relative;font-family:var(--slab);font-size:13px;letter-spacing:.3em;color:var(--red-deep);margin-bottom:20px}
.hero-title{position:relative;font-family:var(--en)}
.hero-title .line1{display:block;font-size:clamp(54px,8.2vw,104px);line-height:1;letter-spacing:.01em;color:var(--ink);text-shadow:5px 5px 0 rgba(240,96,32,.22)}
.hero-title .line1 i{font-style:normal;color:var(--red)}
.hero-title .line2{display:block;margin-top:18px;font-family:var(--sans);font-weight:900;font-size:clamp(16px,2.4vw,23px);letter-spacing:.3em;color:var(--ink2)}
.hero-slogan{position:relative;margin-top:26px;font-weight:900;font-size:clamp(19px,2.6vw,26px);letter-spacing:.06em}
.hero-slogan em{font-style:normal;background:linear-gradient(transparent 62%,rgba(240,96,32,.30) 62%)}
.hero-lead{position:relative;margin:18px auto 0;max-width:60ch;font-size:15.5px;color:var(--ink2)}
.hero-cta{position:relative;margin-top:32px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.btn-main{display:inline-block;background:var(--red);color:#fff;font-weight:700;font-size:16px;padding:15px 36px;border-radius:6px;box-shadow:5px 5px 0 var(--ink);transition:.2s}
.btn-main:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--ink)}
.btn-ghost{display:inline-block;border:2px solid var(--ink);color:var(--ink);font-weight:700;font-size:15px;padding:13px 28px;border-radius:6px;background:var(--paper);transition:.2s}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.hero-note{position:relative;margin-top:16px;font-size:12.5px;color:var(--muted);letter-spacing:.08em}
.hero-stamp{position:absolute;right:4%;top:96px;width:96px;height:96px;border:4px solid var(--red);border-radius:50%;display:flex;align-items:center;justify-content:center;text-align:center;font-family:var(--serif);font-weight:900;font-size:20px;line-height:1.3;color:var(--red);transform:rotate(12deg);opacity:.85;letter-spacing:.1em}

/* ---------- 分节通用 ---------- */
.sec{max-width:1240px;margin:0 auto;padding:82px 26px}
.sec.paper{max-width:none;background:var(--paper2);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.sec-head.center{text-align:center;margin-bottom:42px}
.sec-en{font-family:var(--slab);font-size:13px;letter-spacing:.32em;color:var(--red-deep);margin-bottom:8px}
.sec-head h2{font-family:var(--slab);font-size:clamp(28px,3.4vw,40px);font-weight:700;letter-spacing:.1em}
.sec-head h2::after{content:"";display:block;width:64px;height:4px;background:var(--red);margin:14px auto 0}
.sec-sub{margin-top:12px;font-size:14px;color:var(--muted);letter-spacing:.1em}

/* ---------- 胶片样张 ---------- */
.film-strip{background:var(--ink);border-radius:14px;padding:26px 0;box-shadow:0 20px 44px rgba(29,26,22,.28)}
.film-perf{height:16px;background-image:radial-gradient(circle, var(--paper) 4px, transparent 4.5px);background-size:22px 16px;background-position:center;margin:0 26px}
.film-perf.top{margin-bottom:20px}
.film-perf.bottom{margin-top:20px}
.film-track{display:flex;gap:22px;overflow-x:auto;padding:0 26px;scroll-snap-type:x mandatory;scrollbar-width:none}
.film-track::-webkit-scrollbar{display:none}
.film-track figure{flex:0 0 auto;width:230px;scroll-snap-align:center}
.f-ph{height:386px;border-radius:6px;overflow:hidden;border:2px solid rgba(246,241,231,.35);background:#000}
.f-ph img{width:100%;height:100%;object-fit:cover;object-position:top}
.film-track figcaption{margin-top:12px;text-align:center;color:rgba(246,241,231,.85);font-size:13px;letter-spacing:.12em}
.film-btns{display:flex;justify-content:center;gap:14px;margin-top:22px}
.film-btns button{border:2px solid var(--ink);background:var(--paper);font-weight:700;font-size:14px;padding:10px 22px;border-radius:999px;transition:.25s}
.film-btns button:hover{background:var(--red);border-color:var(--red);color:#fff}
.press-stats{margin-top:44px;display:flex;justify-content:space-around;background:#fff;border:2px solid var(--ink);border-radius:12px;padding:24px 18px;box-shadow:6px 6px 0 rgba(29,26,22,.14)}
.press-stats li{text-align:center}
.press-stats span,.press-stats b{display:block;font-family:var(--en);font-size:32px;color:var(--red-deep);line-height:1.15}
.press-stats i{font-style:normal;font-size:13px;color:var(--muted);letter-spacing:.16em}

/* ---------- 01 三栏报纸栅格 ---------- */
.paper-cols{display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--ink);background:#fff;box-shadow:8px 8px 0 rgba(29,26,22,.14)}
.p-col{padding:34px 30px 38px}
.p-col + .p-col{border-left:2px solid var(--ink)}
.p-kicker{display:inline-block;font-family:var(--slab);font-weight:700;font-size:13px;letter-spacing:.24em;color:#fff;background:var(--red);padding:4px 14px;margin-bottom:16px}
.p-col:nth-child(2) .p-kicker{background:var(--ink)}
.p-col:nth-child(3) .p-kicker{background:#2c7da0}
.p-col h3{font-size:20px;font-weight:900;margin-bottom:12px;letter-spacing:.04em}
.p-col p{font-size:14.5px;color:var(--ink2)}

/* ---------- 02 付印流程 ---------- */
.press-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;counter-reset:step}
.press-flow li{background:#fff;border:2px solid var(--ink);border-radius:12px;padding:30px 26px;position:relative;text-align:center;box-shadow:6px 6px 0 rgba(29,26,22,.12)}
.pf-no{display:inline-flex;align-items:center;justify-content:center;width:58px;height:58px;border-radius:50%;background:var(--red);color:#fff;font-family:var(--serif);font-weight:900;font-size:22px;margin-bottom:16px}
.press-flow li:nth-child(2) .pf-no{background:var(--ink)}
.press-flow li:nth-child(3) .pf-no{background:#2c7da0}
.press-flow h3{font-size:19px;font-weight:900;margin-bottom:8px}
.press-flow p{font-size:14px;color:var(--ink2)}

/* ---------- 03 订报处 ---------- */
.sub-desk{display:grid;grid-template-columns:1.2fr 1fr;gap:26px;max-width:960px;margin:0 auto}
.sub-card{background:#fff;border:2px solid var(--ink);border-radius:12px;padding:34px 30px;text-align:center;box-shadow:6px 6px 0 rgba(29,26,22,.12);display:flex;flex-direction:column;align-items:center;gap:12px}
.sub-card.main{background:var(--ink);color:var(--paper);box-shadow:8px 8px 0 rgba(240,96,32,.5)}
.sub-card.main h3{color:var(--paper)}
.sub-card.main p{color:rgba(246,241,231,.78)}
.sub-tag{font-family:var(--slab);font-size:12px;font-weight:700;letter-spacing:.28em;color:#fff;background:var(--red);padding:4px 14px;border-radius:999px}
.sub-tag.alt{background:#2c7da0}
.sub-card h3{font-size:21px;font-weight:900}
.sub-card p{font-size:14px;color:var(--ink2);min-height:44px}
.sub-tip{text-align:center;margin-top:22px;font-size:13px;color:var(--muted);letter-spacing:.12em}

/* ---------- 04 问答专栏（双栏报纸式） ---------- */
.ask-cols{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:2px solid var(--ink)}
.ask-col{padding:8px 30px 0}
.ask-col:first-child{border-right:2px solid var(--ink)}
.qa{border-bottom:1px dashed var(--line);background:transparent}
.qa summary{display:flex;align-items:center;gap:12px;padding:20px 4px;cursor:pointer;list-style:none;font-weight:700;font-size:16px;user-select:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"Q";font-family:var(--en);font-size:15px;color:#fff;background:var(--red);width:30px;height:30px;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;flex:none}
.qa summary::after{content:"▸";margin-left:auto;color:var(--red-deep);transition:.3s;flex:none}
.qa[open] summary::after{transform:rotate(90deg)}
.qa p{padding:0 4px 20px 42px;font-size:14.5px;color:var(--ink2)}

/* ---------- 05 读者来信 ---------- */
.letters{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.letter{background:#fff;border:2px solid var(--ink);border-radius:10px;padding:22px;position:relative;transition:.3s;box-shadow:5px 5px 0 rgba(29,26,22,.10)}
.letter:hover{transform:translateY(-5px)}
.l-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.l-head img{width:40px;height:40px;border-radius:8px;border:2px solid var(--red)}
.l-head b{display:block;font-size:15px;line-height:1.3}
.l-head time{font-size:12px;color:var(--muted);font-family:var(--slab)}
.l-stamp{margin-left:auto;font-size:11px;color:var(--red-deep);border:1.5px solid var(--red);border-radius:4px;padding:2px 8px;transform:rotate(6deg);letter-spacing:.1em;flex:none}
.letter p{font-size:14px;color:var(--ink2)}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:rgba(246,241,231,.8);margin-top:40px}
.foot-inner{max-width:1240px;margin:0 auto;padding:52px 26px 32px}
.foot-brand{display:flex;align-items:center;gap:14px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.12)}
.foot-brand img{width:42px;height:42px;border-radius:9px}
.foot-brand b{display:block;color:var(--paper);font-family:var(--slab);font-size:16px;letter-spacing:.12em}
.foot-brand span{font-size:12.5px;color:var(--blue);letter-spacing:.14em}
.foot-nav{display:flex;flex-wrap:wrap;gap:24px;padding:22px 0;font-size:14px}
.foot-nav a{color:rgba(246,241,231,.75);transition:.25s}
.foot-nav a:hover{color:var(--red)}
.foot-tip{font-size:12.5px;color:rgba(246,241,231,.55);letter-spacing:.06em}
.foot-copy{margin-top:8px;font-size:12px;color:rgba(246,241,231,.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(--ink);color:var(--paper);font-size:12px;padding:12px 10px;border-radius:10px;box-shadow:0 10px 24px rgba(29,26,22,.35);border:1.5px solid var(--red)}
.interaction-complaint-button img{width:20px;height:20px}
.interaction-complaint-button:hover{background:var(--red)}
.back-top{position:fixed;right:24px;bottom:40px;z-index:900;width:44px;height:44px;border-radius:8px;background:var(--red);color:#fff;font-size:18px;box-shadow:4px 4px 0 var(--ink);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){
  .tb-inner{padding:12px 16px;gap:14px}
  .tb-nav{display:none}
  .tb-cta{margin-left:0;padding:9px 16px;font-size:13.5px}
  .tb-toggle{display:flex}
  .m-menu.open{display:block}
  .hero{padding:60px 18px 44px}
  .hero-stamp{width:72px;height:72px;font-size:15px;right:2%;top:60px}
  .hero-cta .btn-main,.hero-cta .btn-ghost{width:100%;text-align:center}
  .sec{padding:60px 16px}
  .sec.paper{padding-left:16px;padding-right:16px}
  .film-track figure{width:196px}
  .f-ph{height:328px}
  .press-stats span,.press-stats b{font-size:24px}
  .paper-cols{grid-template-columns:1fr}
  .p-col + .p-col{border-left:0;border-top:2px solid var(--ink)}
  .press-flow{grid-template-columns:1fr;gap:18px}
  .sub-desk{grid-template-columns:1fr}
  .ask-cols{grid-template-columns:1fr}
  .ask-col:first-child{border-right:0;padding-bottom:8px}
  .ask-col:last-child{border-top:2px solid var(--ink);padding-top:12px}
  .letters{grid-template-columns:1fr}
  .interaction-complaint-button{right:14px;bottom:96px}
  .back-top{right:16px;bottom:32px}
}
@media (max-width:520px){
  .hero-title .line2{letter-spacing:.14em}
}