/* ============================================================
   AI 汇客厅 · 会议海报站
   视觉基调：绿系为骨、米金为引
   —— 页面结构 / 按钮 / 页头走赋智营 v2.0 墨绿体系（骨架）
   —— 海报框 / 期数徽章 / 嘉宾卡 / 分区底色用米金（呼应海报本身）
   ============================================================ */

@font-face{
  font-family:"Sarasa Gothic SC";
  src:url("/fonts/sarasa-gothic-sc-400.woff2") format("woff2");
  font-weight:400;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Sarasa Gothic SC";
  src:url("/fonts/sarasa-gothic-sc-600.woff2") format("woff2");
  font-weight:600;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Sarasa Gothic SC";
  src:url("/fonts/sarasa-gothic-sc-700.woff2") format("woff2");
  font-weight:700;font-style:normal;font-display:swap;
}
/* 回退字体度量补偿：Sarasa 字面率 87.6%，雅黑 91.2%，不补偿会整页跳动 */
@font-face{
  font-family:"Sarasa Fallback";
  src:local("Source Han Sans SC"),local("Noto Sans SC"),
      local("PingFang SC"),local("Microsoft YaHei");
  size-adjust:96%;
  ascent-override:96.9%;
  descent-override:24.1%;
  line-gap-override:0%;
}

:root{
  /* —— 绿系（骨） —— */
  --ink-bg:#05140E;
  --ink:#0A1F16;
  --surface:#F4F8F3;
  --green:#2FD07A;
  --green-deep:#12784A;
  --teal:#13DDC4;
  --mint:#9BF5C9;

  /* —— 米金（引，取自海报同源色） —— */
  --sand:#FBF7EF;
  --sand-2:#F5EDDD;
  --sand-3:#EFE3CE;
  --gold-warm:#B8935A;
  --gold-deep:#96733F;
  --gold-line:rgba(184,147,90,.26);
  --gold-line-soft:rgba(184,147,90,.16);

  /* —— 中性 —— */
  --white:#FFFFFF;
  --muted:#5C6F65;
  --muted-light:#8A9A91;
  --line:rgba(10,31,22,.10);
  --line-strong:rgba(10,31,22,.16);

  --grad-rule:linear-gradient(90deg,#B8935A 0%,#2FD07A 100%);
  --grad-btn:linear-gradient(180deg,#3CDC89 0%,#2FD07A 54%,#27C473 100%);

  --shadow-card:0 6px 24px rgba(5,20,14,.07);
  --shadow-poster:0 18px 46px rgba(5,20,14,.20),0 2px 8px rgba(5,20,14,.08);
  --r-card:20px;
  --r-sm:12px;
  --r-pill:999px;

  --font:"Sarasa Gothic SC","Sarasa Fallback",-apple-system,BlinkMacSystemFont,
         "PingFang SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}

/* [hidden] 的默认 display:none 会被任何显式 display 规则覆盖
   （.dropzone-preview 用了 inline-block，曾导致预览层压在上传区上） */
[hidden]{display:none !important}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
  /* 内容不足一屏时页脚贴底，避免页脚悬在页面中间 */
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
main{flex:1 0 auto}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}

.wrap{max-width:1120px;margin:0 auto;padding:0 28px}

.skip{
  position:absolute;left:-9999px;top:0;z-index:99;
  background:var(--ink);color:var(--white);padding:10px 18px;border-radius:0 0 8px 0;
}
.skip:focus{left:0}

/* ================= 页头 ================= */

.site-head{background:var(--ink-bg);position:relative}
.head-row{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;gap:20px;
}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand-logo{width:132px;height:auto;flex:none}
.brand-divider{width:1px;height:18px;background:rgba(255,255,255,.22);flex:none}
.brand-name{
  color:#EAF6EF;font-size:14.5px;font-weight:600;letter-spacing:.06em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.site-nav{display:flex;align-items:center;gap:8px;flex:none}
.site-nav a{
  color:#B7CFC2;font-size:14px;padding:8px 14px;border-radius:var(--r-pill);
  transition:color .18s,background .18s;
}
.site-nav a:hover{color:var(--white);background:rgba(255,255,255,.07)}
.site-nav a.on{color:var(--ink-bg);background:var(--mint);font-weight:600}
.site-nav .nav-admin{
  border:1px solid rgba(255,255,255,.22);color:var(--mint);
}
.head-rule{height:2px;background:var(--grad-rule)}

/* ================= 通用元件 ================= */

.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold-warm);font-weight:600;margin:0 0 14px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;background:var(--green);
  box-shadow:0 0 0 3px rgba(47,208,122,.18);
}
.period-chip{
  font-size:12px;letter-spacing:.04em;padding:3px 10px;border-radius:var(--r-pill);
  background:var(--sand-2);color:var(--gold-deep);
  border:1px solid var(--gold-line);text-transform:none;
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;
  border:none;transition:transform .16s,box-shadow .2s,background .2s,color .2s;
}
.btn:active{transform:translateY(1px)}
.btn-solid{background:var(--ink);color:var(--white)}
.btn-solid:hover{background:#0F2E22;box-shadow:0 8px 22px rgba(5,20,14,.22)}
.btn-ghost{
  background:transparent;color:var(--ink);
  box-shadow:inset 0 0 0 1px var(--line-strong);
}
.btn-ghost:hover{box-shadow:inset 0 0 0 1px rgba(10,31,22,.34);background:rgba(255,255,255,.6)}
.btn-sand{
  background:var(--sand-2);color:var(--gold-deep);
  box-shadow:inset 0 0 0 1px var(--gold-line);
}
.btn-sand:hover{background:var(--sand-3)}
.btn-ghost-light{
  background:transparent;color:#C8F7DF;
  box-shadow:inset 0 0 0 1px rgba(155,245,201,.36);
}
.btn-ghost-light:hover{background:rgba(155,245,201,.10)}
.btn-block{display:flex;width:100%}

.block-title{
  font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--gold-deep);
  margin:0 0 10px;text-transform:uppercase;
}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.03em;font-weight:600}

/* ================= 首页 Hero ================= */

.hero{
  /* 光晕用背景渐变实现：右上一点米金暖光，其余保持墨底，
     这样不必用伪元素圆，避免在宽屏上露出生硬的色块边界 */
  background:
    radial-gradient(760px 540px at 88% -8%, rgba(184,147,90,.13), rgba(184,147,90,0) 64%),
    radial-gradient(680px 460px at 6% 108%, rgba(47,208,122,.09), rgba(47,208,122,0) 62%),
    var(--ink-bg);
  color:var(--white);
  position:relative;
  overflow:hidden;
  padding:64px 0 76px;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;align-items:center;
}
.hero-copy{min-width:0}
.hero .eyebrow{color:var(--mint)}
.hero .eyebrow .dot{background:var(--teal);box-shadow:0 0 0 3px rgba(19,221,196,.2)}
.hero .period-chip{
  background:rgba(184,147,90,.16);color:#E6C68E;
  border-color:rgba(184,147,90,.42);
}
.hero-title{
  font-size:clamp(32px,4.6vw,54px);
  line-height:1.18;font-weight:700;letter-spacing:-.01em;
  margin:0 0 16px;color:var(--white);
  text-wrap:balance;
}
.hero-sub{
  font-size:17px;color:#B7CFC2;margin:0 0 30px;line-height:1.6;
  max-width:34em;
}
.facts{list-style:none;margin:0 0 32px;padding:0;display:grid;gap:2px}
.facts li{
  display:flex;align-items:baseline;gap:18px;
  padding:12px 0;border-top:1px solid rgba(255,255,255,.09);
}
.facts li:last-child{border-bottom:1px solid rgba(255,255,255,.09)}
.fact-k{
  flex:none;width:80px;font-size:13px;color:var(--gold-warm);
  letter-spacing:.06em;
}
.fact-v{color:#EAF6EF;font-size:16px;min-width:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

.copy-btn{
  display:inline-flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#EAF6EF;padding:6px 14px;border-radius:var(--r-pill);
  cursor:pointer;font-size:16px;transition:background .18s,border-color .18s;
}
.copy-btn:hover{background:rgba(155,245,201,.12);border-color:rgba(155,245,201,.4)}
.copy-hint{
  font-size:11.5px;color:var(--mint);letter-spacing:.06em;
  padding-left:10px;border-left:1px solid rgba(255,255,255,.16);
}
.copy-btn.copied .copy-hint{color:var(--green)}

/* 海报框：米金细边 + 白衬底 + 投影，让米白海报从墨底上"立"起来 */
.poster-frame{
  display:block;background:var(--white);
  padding:8px;border-radius:var(--r-card);
  box-shadow:var(--shadow-poster);
  border:1px solid var(--gold-line);
  transition:transform .28s cubic-bezier(.2,.8,.3,1),box-shadow .28s;
}
.poster-frame:hover{
  transform:translateY(-4px);
  box-shadow:0 26px 60px rgba(5,20,14,.28),0 3px 10px rgba(5,20,14,.1);
}
.poster-frame img{
  width:100%;height:auto;border-radius:calc(var(--r-card) - 8px);
  background:var(--sand);
}
.hero-poster{position:relative}

/* 空状态 hero */
.hero-empty{padding:110px 0 130px;text-align:center}
.hero-empty .wrap{max-width:640px}
.hero-empty .eyebrow{justify-content:center}
.hero-empty .hero-title{margin-bottom:22px}
.hero-lead{color:#B7CFC2;font-size:16.5px;margin:0 0 32px;line-height:1.7}

/* ================= 往期 ================= */

.section{padding:64px 0 72px}
.section-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:20px;margin-bottom:28px;
}
.section-head h2{
  font-size:23px;font-weight:700;margin:0;letter-spacing:-.01em;
}
.section-head h2::before{
  content:"";display:inline-block;width:10px;height:10px;border-radius:3px;
  background:var(--gold-warm);margin-right:12px;vertical-align:2px;
}
.more{
  font-size:14px;color:var(--green-deep);font-weight:600;
  padding:6px 0;border-bottom:1px solid transparent;transition:border-color .18s;
}
.more:hover{border-bottom-color:var(--green)}

.poster-grid{
  display:grid;gap:26px 24px;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.pcard{
  display:flex;flex-direction:column;
  background:var(--white);border-radius:var(--r-card);
  border:1px solid var(--gold-line-soft);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .26s cubic-bezier(.2,.8,.3,1),box-shadow .26s,border-color .26s;
}
.pcard:hover{
  transform:translateY(-5px);
  box-shadow:0 20px 44px rgba(5,20,14,.14);
  border-color:var(--gold-line);
}
.pcard-img{
  background:var(--sand-2);
  /* 海报是 9:16 竖版，缩略图裁成 4:5 只留标题与嘉宾区，
     否则整张海报原样缩小，卡片会高到一屏只放得下一行 */
  aspect-ratio:4/5;
  overflow:hidden;
}
.pcard-img img{
  width:100%;height:100%;object-fit:cover;object-position:top center;
  transition:transform .5s cubic-bezier(.2,.8,.3,1);
}
.pcard:hover .pcard-img img{transform:scale(1.025)}
.pcard-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:4px}
.pcard-period{
  margin:0;font-size:12px;letter-spacing:.1em;color:var(--gold-warm);font-weight:600;
}
.pcard-theme{
  margin:0;font-size:16.5px;font-weight:600;line-height:1.42;
  color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;
}
.pcard-speaker{margin:2px 0 0;font-size:13.5px;color:var(--muted)}
.pcard-date{margin:2px 0 0;font-size:12.5px;color:var(--muted-light)}

/* ================= 往期页 ================= */

.archive-head{padding:56px 0 12px;max-width:820px}
.page-title{
  font-size:clamp(28px,3.6vw,38px);font-weight:700;margin:0 0 12px;
  letter-spacing:-.01em;line-height:1.24;
}
.page-lead{font-size:16px;color:var(--muted);margin:0 0 8px;line-height:1.7}
.page-lead strong{color:var(--green-deep);font-size:19px}
.poster-grid--all{padding-bottom:72px}

.empty-box{
  text-align:center;padding:72px 28px;
  background:var(--white);border-radius:var(--r-card);
  border:1px dashed var(--gold-line);margin:32px auto 72px;
}
.empty-box p{margin:0 0 12px;color:var(--muted)}
.muted{color:var(--muted)}

/* ================= 详情页 ================= */

.detail-wrap{padding-top:34px;padding-bottom:80px}
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted-light);margin-bottom:30px;
}
.crumb a{color:var(--muted);transition:color .18s}
.crumb a:hover{color:var(--green-deep)}
.crumb-cur{color:var(--gold-deep);font-weight:600}

.detail{
  display:grid;grid-template-columns:340px minmax(0,1fr);
  gap:56px;align-items:start;
}
.detail-poster{position:sticky;top:28px}
.poster-frame--detail{padding:10px}
.poster-tip{
  font-size:12.5px;color:var(--muted-light);text-align:center;margin:12px 0 0;
}

.detail-info{min-width:0}
.detail-theme{
  font-size:clamp(26px,3.4vw,40px);line-height:1.24;font-weight:700;
  margin:0 0 14px;letter-spacing:-.01em;text-wrap:balance;
}
.detail-sub{
  font-size:17px;color:var(--muted);margin:0 0 32px;line-height:1.62;
}

.info-list{
  margin:0 0 34px;padding:22px 24px;
  background:var(--white);border-radius:var(--r-card);
  border:1px solid var(--gold-line-soft);
}
.info-row{
  display:grid;grid-template-columns:88px minmax(0,1fr);gap:16px;
  padding:11px 0;border-bottom:1px solid var(--line);
}
.info-row:last-child{border-bottom:none}
.info-row dt{font-size:13px;color:var(--gold-deep);letter-spacing:.04em}
.info-row dd{margin:0;font-size:15.5px;color:var(--ink);min-width:0}
.info-list .copy-btn{
  background:var(--sand);border-color:var(--gold-line);color:var(--ink);
  font-size:15px;
}
.info-list .copy-btn:hover{background:var(--sand-2)}
.info-list .copy-hint{color:var(--green-deep);border-left-color:var(--gold-line)}
.co-orgs{display:flex;flex-wrap:wrap;gap:7px}
.tag{
  font-size:13px;padding:3px 11px;border-radius:var(--r-pill);
  background:var(--sand);color:var(--gold-deep);
  border:1px solid var(--gold-line-soft);white-space:nowrap;
}

/* 嘉宾卡：米金底，是"引"最集中的地方 */
.speaker-box{
  background:var(--sand);
  border:1px solid var(--gold-line-soft);
  border-left:3px solid var(--gold-warm);
  border-radius:var(--r-card);
  padding:24px 26px;margin-bottom:24px;
}
.speaker-name{font-size:20px;font-weight:700;margin:0 0 8px}
.speaker-title{
  font-size:14.5px;color:#5B4A33;line-height:1.78;margin:0;
}
.speaker-bio{
  font-size:14.5px;color:var(--muted);line-height:1.78;margin:12px 0 0;
  padding-top:12px;border-top:1px solid var(--gold-line-soft);
}

.note-box{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;margin-bottom:24px;
}
.note-text{font-size:15px;color:var(--muted);line-height:1.78;margin:0;white-space:pre-wrap}

.detail-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ================= 错误页 ================= */

.error-page{text-align:center;padding:100px 28px 120px;max-width:560px}
.error-code{
  font-size:76px;font-weight:700;line-height:1;margin:0 0 8px;
  color:var(--sand-3);letter-spacing:-.03em;
}
.error-title{font-size:24px;margin:0 0 12px}
.error-msg{color:var(--muted);margin:0 0 32px}
.error-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ================= 页脚 ================= */

.site-foot{background:var(--ink-bg);color:#B7CFC2;padding:44px 0 40px}
.foot-inner{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.foot-line{margin:0 0 6px;font-size:15px;color:#EAF6EF;letter-spacing:.06em}
.foot-sub{margin:0;font-size:13.5px;color:#7E9A8D}
.foot-right{text-align:right}
.foot-org{margin:0 0 6px;font-size:13.5px;color:#EAF6EF}
.foot-org::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--gold-warm);margin-right:8px;vertical-align:1px;
}
.foot-en{margin:0;font-size:11px;letter-spacing:.14em;color:#6B8478}

/* ================= 后台通用 ================= */

.admin-bar{background:var(--white);border-bottom:1px solid var(--line)}
.admin-bar-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:58px;gap:20px;
}
.admin-tabs{display:flex;gap:6px}
.admin-tabs a{
  font-size:14px;padding:7px 14px;border-radius:var(--r-pill);color:var(--muted);
  transition:background .18s,color .18s;
}
.admin-tabs a:hover{background:var(--surface);color:var(--ink)}
.admin-tabs a.on{background:var(--ink);color:var(--white);font-weight:600}
.admin-who{display:flex;align-items:center;gap:14px;font-size:13.5px}
.admin-name{color:var(--muted)}
.link-btn{
  background:none;border:none;padding:0;cursor:pointer;
  color:var(--green-deep);font-size:13.5px;text-decoration:underline;
  text-underline-offset:3px;
}
.inline-form{display:inline;margin:0}

.admin-page{padding:36px 28px 80px}
.admin-page--narrow{max-width:760px}
.admin-head{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:24px;margin-bottom:28px;flex-wrap:wrap;
}
.admin-head .page-title{display:flex;align-items:center;gap:14px;margin-bottom:6px}

.flash{
  margin:0 0 20px;padding:13px 18px;border-radius:var(--r-sm);
  font-size:14.5px;border-left:3px solid;
}
.flash.ok{background:#EAF7F0;border-color:var(--green);color:#0F5B3A}
.flash.warn{background:var(--sand);border-color:var(--gold-warm);color:#6B5326}
.flash.err{background:#FCEFEC;border-color:#D9534F;color:#8A2B22}

.badge{
  display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;
  border-radius:var(--r-pill);letter-spacing:.04em;
}
.badge.live{background:#E4F8EE;color:#0F6B43}
.badge.draft{background:var(--sand-2);color:var(--gold-deep)}
.ok-num{color:var(--green-deep)}
.draft-num{color:var(--gold-deep)}

.table-wrap{overflow-x:auto;background:var(--white);border-radius:var(--r-card);border:1px solid var(--line)}
.admin-table{width:100%;border-collapse:collapse;font-size:14px;min-width:760px}
.admin-table th{
  text-align:left;font-size:12.5px;font-weight:600;color:var(--muted);
  letter-spacing:.06em;padding:13px 16px;border-bottom:1px solid var(--line);
  background:var(--surface);white-space:nowrap;
}
.admin-table td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:middle}
.admin-table tr:last-child td{border-bottom:none}
.admin-table tr:hover td{background:#FCFEFC}
.col-poster{width:64px}
.thumb{
  width:44px;height:auto;border-radius:6px;border:1px solid var(--gold-line-soft);
  background:var(--sand);
}
.cell-period{margin:0;font-size:12px;color:var(--gold-warm);letter-spacing:.06em}
.cell-theme{margin:2px 0 0;font-weight:600;font-size:14.5px;line-height:1.4}
.col-speaker,.col-time{color:var(--muted);font-size:13.5px}
.cell-date{display:block}
.cell-time{display:block;font-size:12.5px;color:var(--muted-light)}
.col-act{white-space:nowrap}
.mini-btn{
  display:inline-block;font-size:12.5px;padding:5px 11px;border-radius:var(--r-pill);
  background:var(--surface);color:var(--ink);border:1px solid var(--line-strong);
  cursor:pointer;margin-right:5px;transition:background .16s,border-color .16s;
}
.mini-btn:hover{background:var(--white);border-color:rgba(10,31,22,.3)}
.mini-btn.primary{background:var(--ink);color:var(--white);border-color:var(--ink)}
.mini-btn.primary:hover{background:#0F2E22}
.mini-btn.danger{color:#9B2C22;border-color:rgba(155,44,34,.28)}
.mini-btn.danger:hover{background:#FCEFEC}

/* ================= 上传页 ================= */

.upload-form{margin-bottom:36px}
.dropzone{
  display:block;position:relative;cursor:pointer;
  border:2px dashed var(--gold-line);border-radius:var(--r-card);
  background:var(--white);padding:56px 28px;text-align:center;
  transition:border-color .2s,background .2s;
}
.dropzone:hover,.dropzone.drag{border-color:var(--gold-warm);background:var(--sand)}
.dropzone input[type=file]{
  position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%;
}
.dz-icon{width:46px;height:46px;margin:0 auto 14px;color:var(--gold-warm)}
.dz-title{font-size:16px;font-weight:600;margin:0 0 6px}
.dz-hint{font-size:13px;color:var(--muted-light);margin:0}
.dropzone-preview{position:relative;display:inline-block;max-width:300px}
.dropzone-preview img{border-radius:var(--r-sm);box-shadow:var(--shadow-card);margin:0 auto}
.dz-change{
  position:absolute;bottom:10px;left:50%;transform:translateX(-50%);
  background:rgba(5,20,14,.82);color:var(--white);border:none;
  padding:6px 16px;border-radius:var(--r-pill);font-size:12.5px;cursor:pointer;
}
.upload-meta{
  text-align:center;font-size:13px;color:var(--muted);
  margin:14px 0 20px;word-break:break-all;
}
.form-note{font-size:13px;color:var(--muted-light);margin:12px 0 0;text-align:center}
.form-alert{
  background:#FCEFEC;border-left:3px solid #D9534F;color:#8A2B22;
  padding:13px 18px;border-radius:var(--r-sm);margin:0 0 20px;font-size:14.5px;
}

.tip-box{
  background:var(--sand);border:1px solid var(--gold-line-soft);
  border-radius:var(--r-card);padding:22px 24px;
}
.tip-list{margin:0;padding-left:20px;color:#5B4A33;font-size:14px;line-height:1.85}
.tip-list strong{color:var(--gold-deep)}

/* 上传等待遮罩 */
.overlay{
  position:fixed;inset:0;z-index:60;
  background:rgba(5,20,14,.86);
  display:flex;align-items:center;justify-content:center;
  backdrop-filter:blur(3px);
}
.overlay[hidden]{display:none}
.overlay-box{text-align:center;color:var(--white)}
.spinner{
  width:44px;height:44px;margin:0 auto 22px;border-radius:50%;
  border:3px solid rgba(155,245,201,.22);border-top-color:var(--green);
  animation:spin .9s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.overlay-title{font-size:17px;font-weight:600;margin:0 0 8px}
.overlay-sub{font-size:13.5px;color:#9BB5A8;margin:0}

/* ================= 编辑页 ================= */

.edit-grid{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:start}
.edit-side{position:sticky;top:24px}
.poster-frame--side{padding:7px;border-radius:14px}
.poster-frame--side img{border-radius:9px}
.side-actions{display:grid;gap:10px;margin:20px 0 0}
.side-actions .btn{height:40px;font-size:13.5px}

.ai-raw{
  margin-top:24px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:12px 14px;font-size:12.5px;
}
.ai-raw summary{cursor:pointer;color:var(--muted);font-weight:600;font-size:13px}
.ai-meta{display:grid;gap:4px;margin:12px 0 10px;font-size:12px}
.ai-meta > div{display:flex;gap:8px}
.ai-meta dt{flex:none;width:44px;color:var(--muted-light)}
.ai-meta dd{margin:0;color:var(--ink);word-break:break-all}
.ai-json{
  margin:0;padding:10px;background:var(--ink-bg);color:#9BF5C9;
  border-radius:8px;font-size:11px;line-height:1.6;max-height:260px;
  overflow:auto;white-space:pre-wrap;word-break:break-all;
  font-family:ui-monospace,Consolas,monospace;
}

.edit-form{min-width:0}
.form-group{
  border:none;border-top:1px solid var(--line);
  padding:22px 0 6px;margin:0 0 8px;
}
.form-group legend{
  font-size:12.5px;font-weight:600;letter-spacing:.12em;color:var(--gold-deep);
  padding:0 10px 0 0;text-transform:uppercase;
}
.field{display:block;margin-bottom:16px}
.field--sm{flex:1}
.field-row{display:flex;gap:16px}
.field-label{
  display:block;font-size:13px;color:var(--muted);margin-bottom:6px;
}
.field-label .req{
  font-style:normal;color:#B4402F;font-size:11.5px;margin-left:4px;
}
.field-label .opt{font-style:normal;color:var(--muted-light);font-size:11.5px;margin-left:4px}
.field input,.field textarea{
  width:100%;font-family:inherit;font-size:16px;line-height:1.6;
  padding:11px 14px;border-radius:var(--r-sm);
  border:1px solid var(--line-strong);background:var(--white);color:var(--ink);
  transition:border-color .18s,box-shadow .18s;
}
.field textarea{resize:vertical;min-height:64px}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--green);
  box-shadow:0 0 0 3px rgba(47,208,122,.16);
}
.form-actions{
  display:flex;gap:12px;justify-content:flex-end;
  padding-top:24px;border-top:1px solid var(--line);margin-top:16px;
}

/* ================= 登录页 ================= */

.login-body{
  display:flex;align-items:center;justify-content:center;
  min-height:100vh;background:var(--ink-bg);padding:28px;
}
.login-body::before{
  content:"";position:fixed;top:-160px;right:-100px;width:560px;height:560px;
  border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(184,147,90,.18) 0%,rgba(184,147,90,0) 68%);
}
.login-wrap{
  position:relative;width:100%;max-width:400px;
  display:flex;flex-direction:column;align-items:stretch;
}
/* 浅绿字标必须落在墨底上才看得见，不能放进白色卡片里 */
.login-logo{
  width:140px;height:auto;margin:0 0 22px 4px;align-self:flex-start;
}
.login-card{
  position:relative;width:100%;
  background:var(--white);border-radius:24px;padding:32px 30px 28px;
  box-shadow:0 30px 80px rgba(0,0,0,.35);
}
.login-title{font-size:21px;font-weight:700;margin:0 0 6px}
.login-sub{font-size:12.5px;color:var(--muted-light);margin:0 0 24px}
.login-form{display:grid;gap:15px}
.login-back{
  display:block;text-align:center;font-size:13px;color:var(--muted);
  margin-top:20px;
}
.login-back:hover{color:var(--green-deep)}

/* ================= 响应式 ================= */

@media (max-width:1000px){
  .hero-grid{grid-template-columns:minmax(0,1fr) 272px;gap:36px}
  .detail{grid-template-columns:290px minmax(0,1fr);gap:36px}
  .edit-grid{grid-template-columns:220px minmax(0,1fr);gap:28px}
}

@media (max-width:860px){
  .wrap{padding:0 20px}
  .hero{padding:44px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-poster{max-width:290px;margin:0 auto;order:2}
  .hero-copy{order:1}
  /* 海报在移动端不必占满整屏，但信息要压在前面 */
  .facts li{gap:12px}
  .fact-k{width:68px;font-size:12.5px}

  .detail{grid-template-columns:1fr;gap:30px}
  .detail-poster{position:static;max-width:320px}
  .poster-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px}
  .section{padding:44px 0 52px}

  .edit-grid{grid-template-columns:1fr}
  .edit-side{position:static;display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;align-items:start}
  .edit-side .poster-tip{grid-column:2;margin:0;text-align:left}
  .edit-side .side-actions{grid-column:2;margin:0}
  .edit-side .ai-raw{grid-column:1/-1}

  .foot-inner{flex-direction:column;gap:20px}
  .foot-right{text-align:left}
  .site-foot{padding:34px 0 30px}

  .brand-name{display:none}
  .form-actions{justify-content:stretch;flex-direction:column-reverse}
  .form-actions .btn{width:100%}
}

@media (max-width:560px){
  .wrap{padding:0 16px}
  .head-row{height:60px}
  .brand-logo{width:112px}
  .site-nav a{padding:6px 10px;font-size:13.5px}
  .hero-title{font-size:29px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1;min-width:140px;padding:0 18px}

  /* iOS 上输入框小于 16px 会触发自动放大，必须锁住 */
  .field input,.field textarea{font-size:16px}

  .poster-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 12px}
  .pcard-body{padding:12px 13px 15px}
  .pcard-theme{font-size:14.5px}
  .pcard-period{font-size:11px}

  .detail-theme{font-size:26px}
  .info-list{padding:16px 18px}
  .info-row{grid-template-columns:76px minmax(0,1fr);gap:12px}
  .speaker-box,.note-box{padding:18px 18px}
  .speaker-title,.speaker-bio{font-size:14px}

  .admin-page{padding:24px 16px 64px}
  .admin-head{flex-direction:column;align-items:stretch}
  .admin-head .btn{width:100%}
  .admin-tabs a{padding:6px 10px;font-size:13px}
  .admin-name{display:none}

  .detail-actions{gap:10px}
  .detail-actions .btn{flex:1}
}

@media (max-width:360px){
  .poster-grid{grid-template-columns:1fr}
  /* 单列时卡片更宽，图片区压成正方形，避免一屏只放得下两张 */
  .pcard-img{aspect-ratio:1/1}
}
@media (max-width:400px){
  .hero-title{font-size:26px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}