/* 明朝那些事 · 阅读式互动小说样式（v0.1 形态回归） */
:root{
  --ink:#161210;
  --paper:#e9dcc0;
  --dim:#a8977a;
  --red:#b83a2e;
  --gold:#d4b06a;
}
*{margin:0;padding:0;box-sizing:border-box}
body{
  min-height:100vh;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(184,58,46,.10), transparent 60%),
    radial-gradient(900px 500px at 90% 110%, rgba(212,176,106,.06), transparent 60%),
    var(--ink);
  color:var(--paper);
  font-family:"Noto Serif SC","Source Han Serif SC","STZhongsong","STSong","SimSun",serif;
  line-height:2.05;
  letter-spacing:.03em;
}
/* ---------- 顶栏 ---------- */
#topbar{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 20px;border-bottom:1px solid rgba(212,176,106,.18);
  position:sticky;top:0;z-index:10;
  background:linear-gradient(rgba(22,18,16,.92),rgba(22,18,16,.75));
  backdrop-filter:blur(4px);
}
#brand{color:var(--gold);font-size:14px;letter-spacing:.25em;white-space:nowrap}
#hud{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.chip{
  font-size:12px;color:var(--dim);
  border:1px solid rgba(212,176,106,.35);border-radius:3px;
  padding:1px 8px;white-space:nowrap;
}
.chip b{color:var(--gold);font-weight:normal}
#chapl{font-size:12px;color:var(--red);letter-spacing:.15em;margin-right:6px}
.mini{
  font-family:inherit;font-size:12px;color:var(--dim);background:none;
  border:1px solid transparent;border-radius:3px;cursor:pointer;
  padding:6px 10px;min-height:32px;
}
.mini:hover{color:var(--gold)}
/* ---------- 正文 ---------- */
#stage{max-width:860px;margin:0 auto;padding:40px 26px 90px}
.para{
  margin:0 0 1.25em;font-size:18px;text-indent:2em;
  opacity:0;animation:fadeUp .7s ease forwards;
  animation-delay:calc(var(--i)*.14s);
}
.para .spk{color:var(--gold);text-indent:0;margin-right:.5em}
.hl{font-style:normal;color:var(--gold)}
.poem{
  margin:1.7em 0;text-align:center;font-size:18px;color:var(--gold);
  text-indent:0;letter-spacing:.15em;line-height:2.3;
  opacity:0;animation:fadeUp .9s ease forwards;
  animation-delay:calc(var(--i)*.14s);
}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
/* 史实批注框：关键史实醒目呈现 */
.callout{
  border:1px solid rgba(212,176,106,.5);border-left:3px solid var(--gold);
  background:rgba(212,176,106,.07);border-radius:3px;
  padding:14px 20px;margin:1.5em 0;font-size:16px;text-indent:0;line-height:1.95;
  opacity:0;animation:fadeUp .8s ease forwards;animation-delay:calc(var(--i)*.14s);
}
.callout .c-tag{
  display:block;color:var(--gold);font-size:12px;letter-spacing:.4em;
  margin-bottom:8px;
}
/* ---------- 选项 ---------- */
#choices{margin-top:2.2em;display:flex;flex-direction:column;gap:12px;
  opacity:0;animation:fadeUp .7s ease forwards}
.btn{
  text-align:left;font-family:inherit;font-size:16px;line-height:1.8;
  color:var(--paper);background:rgba(233,220,192,.04);
  border:1px solid rgba(212,176,106,.35);border-left:3px solid rgba(212,176,106,.5);
  padding:12px 18px;cursor:pointer;border-radius:2px;
  transition:all .2s ease;
}
.btn:hover{
  border-left-color:var(--red);border-color:rgba(184,58,46,.7);
  background:rgba(184,58,46,.08);transform:translateX(6px);
}
.btn .fx{color:var(--gold);font-size:13px;margin-left:10px}
/* ---------- 章节卡 / 结局卡 ---------- */
.card{
  text-align:center;padding:56px 0 16px;
  opacity:0;animation:fadeUp 1s ease forwards;
}
.card .num{color:var(--red);letter-spacing:.4em;font-size:14px}
.card h2{font-size:clamp(26px,4.5vw,34px);letter-spacing:.3em;margin:14px 0 8px;font-weight:normal}
.card .sub{color:var(--dim);font-size:14px;letter-spacing:.2em}
.card.end h2{color:var(--red)}
.seal{
  width:62px;height:62px;margin:26px auto 0;line-height:62px;
  border:2px solid var(--red);color:var(--red);font-size:30px;
  border-radius:6px;transform:rotate(-4deg);
}
.stat-line{display:block;color:var(--dim);font-size:15px;letter-spacing:.12em;margin:6px 0}
.stat-line b{color:var(--gold);font-weight:normal}
/* ---------- 记录抽屉 ---------- */
#log-panel{
  position:fixed;top:0;right:-380px;width:min(360px,92vw);height:100vh;z-index:45;
  background:rgba(20,16,13,.97);border-left:1px solid rgba(212,176,106,.4);
  padding:18px 20px;overflow:auto;transition:right .3s ease;
}
#log-panel.show{right:0}
#log-panel h3{color:var(--gold);font-size:14px;letter-spacing:.25em;margin-bottom:12px;font-weight:normal}
.log-item{margin-bottom:12px;line-height:1.9}
.log-item .lwho{color:var(--gold);font-size:13px;letter-spacing:.15em;display:block}
.log-item .ltext{font-size:14px;color:var(--paper)}
#btn-log-close{margin-top:10px;border:1px solid rgba(212,176,106,.4)}
/* ---------- 插图（预留：场景含 illust 字段时显示右侧按钮） ---------- */
#illust-btn{
  position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:20;
  writing-mode:vertical-rl;letter-spacing:.35em;
  font-family:inherit;font-size:14px;color:var(--gold);cursor:pointer;
  background:rgba(22,18,16,.8);border:1px solid rgba(212,176,106,.45);
  padding:16px 8px;border-radius:3px;display:none;
}
#illust-btn:hover{border-color:var(--gold)}
#illust-overlay{
  position:fixed;inset:0;z-index:48;display:none;align-items:center;justify-content:center;
  background:rgba(8,6,5,.9);padding:24px;
}
#illust-overlay.show{display:flex}
#illust-box{max-width:min(920px,94vw);text-align:center}
#illust-box img{max-width:100%;max-height:78vh;display:none;margin:0 auto}
#illust-tip{color:var(--dim);font-size:14px;letter-spacing:.2em;padding:30px 10px}
#btn-illust-close{margin-top:16px;border:1px solid rgba(212,176,106,.4)}
/* ---------- 提示气泡 ---------- */
#toasts{position:fixed;top:60px;left:50%;transform:translateX(-50%);z-index:60;
  display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{
  background:rgba(22,18,16,.95);border:1px solid var(--gold);color:var(--gold);
  font-size:13px;padding:6px 14px;border-radius:3px;letter-spacing:.1em;
  animation:toastIn .3s ease, toastOut .5s ease 2.4s forwards;max-width:88vw;text-align:center;
}
.toast.bad{border-color:var(--red);color:var(--red)}
@keyframes toastIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1}}
@keyframes toastOut{to{opacity:0;transform:translateY(-8px)}}
#foot{
  text-align:center;color:rgba(168,151,122,.45);font-size:12px;
  padding:26px 20px 34px;letter-spacing:.08em;max-width:860px;margin:0 auto;
}
#foot .src{color:rgba(212,176,106,.55);letter-spacing:.15em;margin-bottom:10px}
#foot .disc{line-height:1.9;text-align:justify;text-align-last:center}
/* ---------- 标题页 ---------- */
#title-screen{
  position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:12px;text-align:center;padding:20px;
  background:
    radial-gradient(900px 500px at 50% 30%, rgba(184,58,46,.14), transparent 65%),
    var(--ink);
  transition:opacity .8s ease;
}
#title-screen.hide{opacity:0;pointer-events:none}
#title-screen h1{font-size:clamp(38px,7vw,56px);letter-spacing:.35em;text-indent:.35em;font-weight:normal}
.t-kicker,.t-sub{color:var(--dim);letter-spacing:.4em;font-size:14px;text-indent:.4em}
.t-sub{color:var(--gold);margin-top:6px}
.title-btn{text-align:center;min-width:230px}
.title-btn:hover{transform:none}
.t-tip{color:var(--dim);font-size:13px;max-width:440px;margin-top:26px;line-height:2}
.t-src{color:rgba(168,151,122,.55);font-size:12px;letter-spacing:.15em;margin-top:14px}
/* ---------- 移动端 ---------- */
@media (max-width:640px){
  #topbar{padding:8px 10px}
  #brand{font-size:12px}
  .chip{font-size:11px;padding:2px 6px}
  .mini{font-size:12px;padding:7px 8px}          /* ≥32px 触达，行内按钮 */
  #chapl{display:none}                            /* 手机端章节名只出现在正文 */
  #stage{padding:26px 16px 70px}
  .para{font-size:16.5px}
  .poem{font-size:16.5px}
  .btn{font-size:15px;padding:12px 14px}          /* ≥44px 触达高度 */
  #illust-btn{right:8px;padding:12px 6px}
  #log-panel{width:100vw;right:-100vw}
}