/* ============================================================
   2026 人工智能产业大会 · 站点样式
   设计语言：极简 · 大留白 · 蓝色主调 · 毛玻璃导航
   ============================================================ */

:root{
  --c-bg:#ffffff;
  --c-bg-alt:#f5f5f7;
  --c-bg-dark:#000000;
  --c-text:#1d1d1f;
  --c-text-dim:#86868b;
  --c-text-invert:#f5f5f7;
  --c-accent:#0071e3;
  --c-accent-hover:#0077ed;
  --c-accent-deep:#0062c4;
  --c-accent-soft:rgba(0,113,227,.08);
  --c-accent-line:rgba(0,113,227,.22);
  --c-warn:#a85700;
  --c-warn-bg:rgba(255,159,10,.16);
  --c-line:rgba(0,0,0,.1);
  --c-line-soft:rgba(0,0,0,.06);
  --c-line-dark:rgba(255,255,255,.14);
  --r-card:18px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:980px;
  --w-text:692px;
  --w-page:1120px;
  --nav-pad-open:16px;
  --nav-pad-collapsed:8px;
  --nav-h-open:66px;
  --shadow-card:0 2px 12px rgba(0,0,0,.04);
  --shadow-lift:0 14px 40px rgba(0,0,0,.12);
  --ease:cubic-bezier(.4,0,.2,1);
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  scroll-padding-top:90px;
}

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue","PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  font-size:17px;
  line-height:1.47;
  letter-spacing:-.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

h1,h2,h3,h4{font-weight:500;letter-spacing:-.012em;line-height:1.14;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--c-accent);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;cursor:pointer}

::selection{background:var(--c-accent-soft);color:var(--c-accent-deep)}

/* ---------- 布局 ---------- */
.wrap{width:100%;max-width:var(--w-page);margin-inline:auto;padding-inline:22px}
.wrap--narrow{max-width:860px}

.section{padding-block:120px}
.section--tight{padding-block:88px}
.section--alt{background:var(--c-bg-alt)}
.section--dark{background:var(--c-bg-dark);color:var(--c-text-invert)}
.section--dark h2,.section--dark h3{color:#f5f5f7}
.section--dark .lede{color:#a1a1a6}
.section--dark .eyebrow{color:#2997ff}
.section--dark .card{background:#141416;border-color:var(--c-line-dark)}

.section--edge{padding-block:0}

/* ---------- 排版 ---------- */
.eyebrow{
  font-size:17px;font-weight:600;color:var(--c-accent);
  letter-spacing:-.01em;margin-bottom:12px;
}
.eyebrow--mono{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  opacity:.9;
}
.display{font-size:clamp(38px,6.4vw,76px);font-weight:600;letter-spacing:-.03em;line-height:1.05}
.headline{font-size:clamp(30px,4.4vw,46px);font-weight:600;letter-spacing:-.025em;line-height:1.12}
.subhead{font-size:clamp(22px,2.6vw,30px);font-weight:600;letter-spacing:-.02em}
.lede{font-size:clamp(17px,2vw,21px);line-height:1.5;color:var(--c-text-dim);max-width:var(--w-text)}
.lede--center{margin-inline:auto;text-align:center}
.muted{color:var(--c-text-dim)}
.small{font-size:14px;line-height:1.6}
.tiny{font-size:12.5px;line-height:1.65;color:var(--c-text-dim)}
.accent{color:var(--c-accent)}
.nowrap{white-space:nowrap}
.section-head{max-width:760px;margin-bottom:56px}
.section-head--center{margin-inline:auto;text-align:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-pill);
  background:var(--c-accent);color:#fff;font-size:16px;font-weight:500;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  text-decoration:none;white-space:nowrap;
}
.btn:hover{background:var(--c-accent-hover);text-decoration:none;box-shadow:0 6px 20px rgba(0,113,227,.28)}
.btn:active{transform:scale(.975)}
.btn--ghost{background:transparent;color:var(--c-accent);border-color:var(--c-accent-line)}
.btn--ghost:hover{background:var(--c-accent-soft);box-shadow:none}
.btn--light{background:#fff;color:var(--c-text)}
.btn--light:hover{background:#f0f0f2;box-shadow:0 6px 20px rgba(0,0,0,.25)}
.btn--sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

.link-more{display:inline-flex;align-items:center;gap:6px;font-size:16px;font-weight:500}
.link-more::after{content:"›";font-size:20px;line-height:1;transform:translateY(-1px);transition:transform .2s var(--ease)}
.link-more:hover{text-decoration:none}
.link-more:hover::after{transform:translate(4px,-1px)}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;border-radius:var(--r-card);padding:32px;
  border:1px solid var(--c-line);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.section--alt .card{background:#fff;border-color:transparent;box-shadow:var(--shadow-card)}
.card--flat{box-shadow:none}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--c-accent-line)}
.card__title{font-size:20px;font-weight:600;margin-bottom:10px}
.card__meta{font-size:14px;color:var(--c-text-dim)}
.grid{display:grid;gap:20px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;inset:0 0 auto;z-index:100;
  padding-block:var(--nav-pad-open);
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  box-shadow:0 1px 0 transparent;
  transition:padding-block .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease);
}
.nav.is-collapsed{padding-block:var(--nav-pad-collapsed);box-shadow:0 1px 0 var(--c-line);background:rgba(255,255,255,.86)}
.nav__inner{
  max-width:var(--w-page);margin-inline:auto;padding-inline:22px;
  display:flex;align-items:center;gap:26px;
}
.nav__brand{
  flex:none;display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:600;color:var(--c-text);letter-spacing:-.02em;white-space:nowrap;
  transition:font-size .28s var(--ease);
}
.nav.is-collapsed .nav__brand{font-size:17px}
.nav__brand:hover{color:var(--c-accent);text-decoration:none}
.nav__mark{
  width:26px;height:26px;flex:none;border-radius:8px;
  background:linear-gradient(135deg,#0071e3,#00a3ff);
  display:grid;place-items:center;color:#fff;font-size:12px;font-weight:700;letter-spacing:0;
}
.nav__brand .brand-long{display:inline}
.nav__brand .brand-short{display:none}
.nav__logo{height:30px;width:auto;display:block;flex:none;transition:height .28s var(--ease)}
.nav.is-collapsed .nav__logo{height:24px}
.hero__logo{width:min(380px,70vw);height:auto;display:block;margin:0 auto 26px}
.tile__img{
  width:30px;height:30px;flex:none;object-fit:contain;
  border-radius:8px;background:#fff;
  box-shadow:0 0 0 1px var(--c-line-soft);
}
.ex__img{
  width:54px;height:54px;flex:none;object-fit:contain;padding:5px;
  border-radius:13px;background:#fff;
  box-shadow:0 0 0 1px var(--c-line-soft);
}
.qr-card{text-align:center}
.qr-img{
  display:block;border-radius:14px;background:#fff;
  box-shadow:0 0 0 1px var(--c-line),0 4px 18px rgba(0,0,0,.06);
}

.nav__links{
  display:flex;gap:24px;margin-inline-start:8px;margin-inline-end:auto;
  min-width:0;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.nav__links::-webkit-scrollbar{display:none}
.nav__links a{
  font-size:14px;color:var(--c-text);opacity:.78;white-space:nowrap;
  transition:opacity .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav__links a:hover{opacity:1;color:var(--c-accent);text-decoration:none}
.nav__links a.is-current{opacity:1;color:var(--c-accent);box-shadow:0 2px 0 -1px currentColor}
.nav__cta{
  flex:none;padding:8px 18px;border-radius:999px;
  background:var(--c-accent);color:#fff;font-size:13.5px;font-weight:600;
  letter-spacing:-.01em;text-decoration:none;white-space:nowrap;
  transition:filter .2s var(--ease);
}
.nav__cta:hover{filter:brightness(1.1);text-decoration:none}

/* ---------- 英雄区 ---------- */
.hero{
  position:relative;
  padding-block:calc(var(--nav-h-open) + 84px) 40px;
  background:radial-gradient(ellipse 90% 62% at 50% 0%,var(--c-accent-soft),transparent 68%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0;height:1px;background:var(--c-line-soft);
}
.hero__inner{text-align:center;max-width:920px;margin-inline:auto}
.hero__tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-accent-line);
  font-size:13px;font-weight:600;color:var(--c-accent);letter-spacing:.02em;
  box-shadow:0 2px 10px rgba(0,113,227,.08);
}
.hero__tag .dot{
  width:7px;height:7px;border-radius:50%;background:#00b34a;
  box-shadow:0 0 0 0 rgba(0,179,74,.5);animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(0,179,74,.45)}
  70%{box-shadow:0 0 0 9px rgba(0,179,74,0)}
  100%{box-shadow:0 0 0 0 rgba(0,179,74,0)}
}
.hero h1{margin-top:26px}
.hero__theme{
  margin-top:20px;font-size:clamp(17px,2vw,21px);color:var(--c-text-dim);
}
.hero__theme strong{color:var(--c-text);font-weight:600}
.hero__meta{
  margin-top:26px;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;
  font-size:15px;color:var(--c-text);
}
.hero__meta span{display:inline-flex;align-items:center;gap:7px}
.hero__meta svg{width:17px;height:17px;flex:none;opacity:.55}
.hero__cta{margin-top:32px;justify-content:center}

/* 倒计时 */
.countdown{
  margin:44px auto 0;display:flex;flex-wrap:wrap;justify-content:center;
  gap:12px;align-items:stretch;
}
.cd-cell{
  min-width:96px;padding:16px 12px 14px;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--shadow-card);
}
.cd-num{
  font-size:clamp(30px,4.6vw,42px);font-weight:600;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;line-height:1;
  background:linear-gradient(180deg,#1d1d1f,#4a4a4f);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.cd-lab{margin-top:8px;font-size:12px;color:var(--c-text-dim);letter-spacing:.1em}
.cd-sep{align-self:center;font-size:26px;color:var(--c-line);font-weight:300;padding-bottom:14px}
.cd-note{margin-top:16px;font-size:13.5px;color:var(--c-text-dim)}
.cd-note b{color:var(--c-accent);font-weight:600}

/* ---------- 品牌跑马灯 ---------- */
.marquee{
  margin-top:8px;padding-block:36px 8px;
  display:grid;gap:14px;
  mask-image:linear-gradient(to right,transparent,#000 7%,#000 93%,transparent);
  -webkit-mask-image:linear-gradient(to right,transparent,#000 7%,#000 93%,transparent);
}
.mq{overflow:hidden}
.mq__track{display:flex;gap:14px;width:max-content;animation:mq-scroll 34s linear infinite}
.mq--rev .mq__track{animation-direction:reverse}
@keyframes mq-scroll{to{transform:translateX(-50%)}}
.tile{
  flex:none;display:flex;align-items:center;gap:11px;
  padding:13px 20px;border-radius:var(--r-md);
  background:var(--c-bg-alt);white-space:nowrap;
  border:1px solid transparent;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.tile:hover{border-color:var(--c-accent-line);background:#fff}
.tile__mark{
  width:28px;height:28px;flex:none;border-radius:8px;display:grid;place-items:center;
  background:var(--brand,#0071e3);color:#fff;font-size:13px;font-weight:700;
}
.tile__mark.is-round{border-radius:50%}
.tile__name{font-size:14.5px;font-weight:500;letter-spacing:-.01em}
.tile__cat{font-size:12px;color:var(--c-text-dim)}

/* ---------- 大会速览 ---------- */
.facts{display:grid;gap:0;border-top:1px solid var(--c-line)}
.fact{
  display:grid;grid-template-columns:150px 1fr;gap:24px;
  padding:28px 4px;border-bottom:1px solid var(--c-line);align-items:baseline;
}
.fact__k{font-size:14px;color:var(--c-text-dim);letter-spacing:.04em}
.fact__v{font-size:clamp(18px,2.2vw,24px);font-weight:600;letter-spacing:-.02em;line-height:1.3}
.fact__sub{margin-top:7px;font-size:14.5px;font-weight:400;color:var(--c-text-dim);letter-spacing:-.01em}

/* ---------- 数字 ---------- */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.stat{text-align:center;padding:6px}
.stat__n{
  font-size:clamp(30px,4vw,44px);font-weight:600;letter-spacing:-.035em;line-height:1;
  font-variant-numeric:tabular-nums;
}
.stat__n em{font-style:normal;font-size:.55em;font-weight:600;margin-left:2px}
.stat__l{margin-top:10px;font-size:14px;color:var(--c-text-dim);line-height:1.4}

/* ---------- 议程 ---------- */
.tabs{
  display:inline-flex;gap:4px;padding:4px;border-radius:var(--r-pill);
  background:var(--c-bg-alt);margin-bottom:44px;flex-wrap:wrap;
}
.tab{
  border:none;background:transparent;border-radius:var(--r-pill);
  padding:10px 20px;font-size:14.5px;font-weight:500;color:var(--c-text-dim);
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.tab[aria-selected="true"]{background:#fff;color:var(--c-text);box-shadow:0 2px 8px rgba(0,0,0,.08);font-weight:600}
.tab small{display:block;font-size:11.5px;font-weight:400;opacity:.7;margin-top:1px}

.day-panel[hidden]{display:none}
.part{margin-bottom:44px}
.part:last-child{margin-bottom:0}
.part__head{
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  padding-bottom:14px;margin-bottom:6px;border-bottom:2px solid var(--c-text);
}
.part__title{font-size:20px;font-weight:600;letter-spacing:-.02em}
.part__sub{font-size:14px;color:var(--c-text-dim)}

.prog{display:grid}
.prog__row{
  display:grid;grid-template-columns:132px 1fr;gap:24px;
  padding:22px 4px;border-bottom:1px solid var(--c-line);
  transition:background .2s var(--ease);
}
.prog__row:hover{background:var(--c-accent-soft)}
.prog__time{
  font-size:14.5px;font-weight:600;color:var(--c-accent);
  font-variant-numeric:tabular-nums;padding-top:2px;
}
.prog__body{display:flex;flex-direction:column;gap:6px}
.prog__title{font-size:17.5px;font-weight:600;letter-spacing:-.015em}
.prog__desc{font-size:14.5px;color:var(--c-text-dim);line-height:1.6}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:4px}
.tag{
  font-size:12.5px;padding:3px 11px;border-radius:var(--r-pill);
  background:var(--c-bg-alt);color:var(--c-text-dim);border:1px solid transparent;
}
.tag--accent{background:var(--c-accent-soft);color:var(--c-accent);border-color:var(--c-accent-line)}
.tag--warn{background:var(--c-warn-bg);color:var(--c-warn)}
.tag--dark{background:rgba(255,255,255,.08);color:#a1a1a6;border-color:var(--c-line-dark)}

/* 论坛列表 */
.forum-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.forum{
  display:flex;gap:16px;padding:20px 22px;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--c-line);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.forum:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift);border-color:var(--c-accent-line)}
.forum__t{
  flex:none;font-size:14px;font-weight:600;color:var(--c-accent);
  font-variant-numeric:tabular-nums;width:52px;padding-top:3px;
}
.forum__n{font-size:16.5px;font-weight:600;letter-spacing:-.015em;line-height:1.35}
.forum__d{margin-top:6px;font-size:13.5px;color:var(--c-text-dim);line-height:1.55}

/* 篇章标记 */
.chapter{display:flex;align-items:center;gap:12px;margin:38px 0 4px}
.chapter:first-child{margin-top:0}
.chapter__n{
  flex:none;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;letter-spacing:.1em;color:#fff;background:var(--c-accent);
  padding:4px 11px;border-radius:var(--r-pill);
}
.chapter__t{flex:none;font-size:16.5px;font-weight:600;letter-spacing:-.015em}
.chapter__rule{flex:1;height:1px;background:var(--c-line)}

/* 展区芯片 */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:var(--r-md);
  background:var(--c-bg-alt);border:1px solid transparent;
  font-size:14.5px;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{border-color:var(--c-accent-line);background:#fff}
.chip i{
  font-style:normal;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:11.5px;color:var(--c-accent);letter-spacing:.08em;
}

/* ---------- 参展厂商 ---------- */
.ex-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ex{
  padding:24px;border-radius:var(--r-card);background:#fff;
  border:1px solid var(--c-line);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.ex:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--c-accent-line)}
.ex__top{display:flex;align-items:center;gap:13px;margin-bottom:14px}
.ex__mark{
  width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:var(--brand,#0071e3);color:#fff;font-size:15px;font-weight:700;letter-spacing:-.02em;
}
.ex__mark.is-round{border-radius:50%}
.ex__name{font-size:17.5px;font-weight:600;letter-spacing:-.02em}
.ex__cat{font-size:12.5px;color:var(--c-accent);margin-top:2px;font-weight:500}
.ex__role{font-size:14px;color:var(--c-text-dim);line-height:1.55}

.ex--more{
  display:grid;place-items:center;text-align:center;
  background:transparent;border-style:dashed;border-color:var(--c-line);
}
.ex--more:hover{transform:none;box-shadow:none;border-color:var(--c-accent-line);background:var(--c-accent-soft)}

/* ---------- 展馆地图 ---------- */
.venue-map{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--shadow-card);
}
.vm__axis{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--c-text-dim);margin-bottom:14px;letter-spacing:.06em;
}
.vm__row{display:grid;gap:10px;margin-bottom:10px}
.vm__row--7{grid-template-columns:1.35fr repeat(6,1fr)}
.vm__row--6{grid-template-columns:repeat(6,1fr)}
.vm__row--misc{grid-template-columns:repeat(4,1fr);margin-top:22px;padding-top:22px;border-top:1px dashed var(--c-line)}
.hall{
  border-radius:var(--r-md);padding:16px 14px;min-height:96px;
  display:flex;flex-direction:column;justify-content:space-between;gap:8px;
  background:var(--c-bg-alt);border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.hall:hover{transform:translateY(-2px);background:#fff;border-color:var(--c-accent-line);box-shadow:var(--shadow-card)}
.hall__id{font-size:15px;font-weight:700;letter-spacing:-.02em;color:var(--c-accent)}
.hall__name{font-size:12.5px;color:var(--c-text-dim);line-height:1.45}
.hall--key{background:linear-gradient(160deg,rgba(0,113,227,.10),rgba(0,113,227,.03));border-color:var(--c-accent-line)}
.hall--misc{background:transparent;border:1px dashed var(--c-line)}

.legend{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;font-size:13.5px;color:var(--c-text-dim)}
.legend i{display:inline-block;width:12px;height:12px;border-radius:4px;margin-right:8px;vertical-align:-1px}

/* 展馆清单 */
.hall-list{display:grid;gap:0;margin-top:8px}
.hl{
  display:grid;grid-template-columns:80px 90px 1fr;gap:20px;align-items:center;
  padding:16px 4px;border-bottom:1px solid var(--c-line);font-size:14.5px;
}
.hl__zone{font-size:12.5px;color:var(--c-text-dim);letter-spacing:.06em}
.hl__id{font-weight:700;color:var(--c-accent)}
.hl__area{color:var(--c-text-dim);font-variant-numeric:tabular-nums;text-align:right}

/* ---------- 交通 ---------- */
.route{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.route:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--c-accent-line)}
.route__head{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.route__icon{
  width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:var(--c-accent-soft);color:var(--c-accent);
}
.route__icon svg{width:22px;height:22px}
.route__title{font-size:18px;font-weight:600;letter-spacing:-.02em}
.route__from{font-size:13px;color:var(--c-text-dim);margin-top:2px}
.steps{margin-top:18px;display:grid;gap:12px}
.step{display:grid;grid-template-columns:24px 1fr;gap:12px;font-size:14.5px;line-height:1.6;color:var(--c-text)}
.step__n{
  width:24px;height:24px;border-radius:50%;display:grid;place-items:center;
  background:var(--c-accent-soft);color:var(--c-accent);font-size:12px;font-weight:700;
  border:1px solid var(--c-accent-line);
}
.step--warn .step__n{background:var(--c-warn-bg);color:var(--c-warn);border-color:transparent}

.hotel-list{display:grid;gap:0;border-top:1px solid var(--c-line)}
.hotel{
  display:flex;justify-content:space-between;align-items:baseline;gap:20px;
  padding:17px 4px;border-bottom:1px solid var(--c-line);font-size:15.5px;
}
.hotel__d{font-size:13.5px;color:var(--c-text-dim);font-variant-numeric:tabular-nums;flex:none}

/* ---------- 资料 ---------- */
.doc{
  display:flex;align-items:center;gap:18px;padding:24px;border-radius:var(--r-card);
  background:#fff;border:1px solid var(--c-line);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.doc:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--c-accent-line)}
.doc__icon{
  width:48px;height:48px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:var(--c-accent-soft);color:var(--c-accent);
}
.doc__icon svg{width:24px;height:24px}
.doc__name{font-size:17px;font-weight:600;letter-spacing:-.02em}
.doc__meta{font-size:13.5px;color:var(--c-text-dim);margin-top:3px}
.doc__cta{margin-left:auto;flex:none}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--c-line);max-width:860px;margin-inline:auto}
.faq details{border-bottom:1px solid var(--c-line)}
.faq summary{
  list-style:none;cursor:pointer;padding:26px 46px 26px 4px;position:relative;
  font-size:18px;font-weight:600;letter-spacing:-.02em;line-height:1.4;
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c-accent)}
.faq summary::after{
  content:"";position:absolute;right:12px;top:50%;width:11px;height:11px;
  border-right:2px solid var(--c-text-dim);border-bottom:2px solid var(--c-text-dim);
  transform:translateY(-70%) rotate(45deg);transition:transform .28s var(--ease);
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--c-accent)}
.faq details[open] summary{color:var(--c-accent)}
.faq__a{padding:0 46px 28px 4px;font-size:15.5px;line-height:1.75;color:var(--c-text-dim)}
.faq__a strong{color:var(--c-text);font-weight:600}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:14px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--c-warn-bg);color:var(--c-warn);font-size:14px;line-height:1.65;
}
.notice--info{background:var(--c-accent-soft);color:var(--c-accent-deep)}
.notice--dark{background:rgba(255,255,255,.06);color:#a1a1a6}
.notice__icon{flex:none;width:18px;height:18px;margin-top:2px}
.notice b{font-weight:600}

/* ---------- 资料目录 ---------- */
.doclist{display:grid;border-top:1px solid var(--c-line)}
.doclist__row{
  display:grid;grid-template-columns:64px 230px 1fr;gap:22px;align-items:baseline;
  padding:20px 4px;border-bottom:1px solid var(--c-line);
}
.doclist__n{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;color:var(--c-accent);letter-spacing:.12em;
}
.doclist__t{font-size:16.5px;font-weight:600;letter-spacing:-.015em}
.doclist__d{font-size:14px;color:var(--c-text-dim);line-height:1.65}

/* ---------- 分栏 ---------- */
.split{display:grid;grid-template-columns:1.55fr 1fr;gap:36px;align-items:start}

/* ---------- 报名表单 ---------- */
.form{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:36px;box-shadow:var(--shadow-card)}
.field{margin-bottom:20px}
.field__lab{display:block;font-size:14px;font-weight:600;margin-bottom:9px}
.field__lab em{font-style:normal;color:#d70015;margin-left:3px}
.input,.select,.textarea{
  width:100%;padding:13px 15px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);background:var(--c-bg-alt);
  font:inherit;font-size:15.5px;color:var(--c-text);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.input::placeholder,.textarea::placeholder{color:#a1a1a6}
.input:focus,.select:focus,.textarea:focus{
  outline:none;background:#fff;border-color:var(--c-accent);
  box-shadow:0 0 0 4px var(--c-accent-soft);
}
.textarea{resize:vertical;min-height:104px}
.field__hint{font-size:13px;color:var(--c-text-dim);margin-top:7px}
.radio-row{display:flex;flex-wrap:wrap;gap:10px}
.radio{position:relative}
.radio input{position:absolute;opacity:0;pointer-events:none}
.radio span{
  display:inline-block;padding:10px 18px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;font-size:14.5px;cursor:pointer;
  transition:all .2s var(--ease);
}
.radio input:checked + span{border-color:var(--c-accent);background:var(--c-accent);color:#fff;font-weight:600}
.radio span:hover{border-color:var(--c-accent-line)}
.form__foot{margin-top:28px;padding-top:24px;border-top:1px solid var(--c-line);display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.foot{background:var(--c-bg-alt);padding-block:56px 40px;border-top:1px solid var(--c-line)}
.foot__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;margin-bottom:40px}
.foot__brand{font-size:19px;font-weight:600;letter-spacing:-.02em;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.foot__title{font-size:13px;font-weight:600;margin-bottom:14px;letter-spacing:.04em;color:var(--c-text)}
.foot__links{display:grid;gap:10px}
.foot__links a{font-size:14px;color:var(--c-text-dim)}
.foot__links a:hover{color:var(--c-accent);text-decoration:none}
.foot__disclaim{
  font-size:12.5px;line-height:1.75;color:var(--c-text-dim);
  max-width:820px;padding-top:26px;border-top:1px solid var(--c-line);
}
.foot__disclaim b{color:var(--c-text);font-weight:600}
.foot__bottom{margin-top:20px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:var(--c-text-dim)}

/* ---------- 悬浮按钮 ---------- */
.fab{
  position:fixed;right:22px;bottom:26px;z-index:60;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
}
.fab__btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border:1px solid var(--c-accent-line);border-radius:999px;
  background:#fff;color:var(--c-accent);font-size:14px;font-weight:600;
  box-shadow:0 6px 24px rgba(0,0,0,.10);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),opacity .2s var(--ease);
}
.fab__btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,.16)}
.fab__btn svg{width:18px;height:18px;flex:none}
.fab__btn[hidden]{display:none}

/* ---------- 内页页头 ---------- */
.page-head{
  position:relative;
  padding-block:calc(var(--nav-h-open) + 72px) 54px;
  background:radial-gradient(ellipse 78% 78% at 18% 0%,var(--c-accent-soft),transparent 62%);
  border-bottom:1px solid var(--c-line-soft);
}
.page-head__n{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;color:var(--c-accent);letter-spacing:.16em;margin-bottom:16px;
}
.page-head h1{font-size:clamp(34px,5vw,56px);font-weight:600;letter-spacing:-.03em;line-height:1.08}
.page-head .lede{margin-top:18px}

/* ---------- 滚动动效 ---------- */
.js [data-anim]{opacity:0;transform:translateY(22px)}
.js [data-anim].is-in{
  opacity:1;transform:none;
  transition:opacity .7s var(--ease),transform .7s var(--ease);
}
.js [data-anim][data-delay="1"].is-in{transition-delay:.08s}
.js [data-anim][data-delay="2"].is-in{transition-delay:.16s}
.js [data-anim][data-delay="3"].is-in{transition-delay:.24s}
.js [data-anim][data-delay="4"].is-in{transition-delay:.32s}
.js [data-anim][data-delay="5"].is-in{transition-delay:.40s}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .ex-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(3,1fr)}
  .vm__row--7{grid-template-columns:1.3fr repeat(3,1fr)}
  .vm__row--6{grid-template-columns:repeat(3,1fr)}
  .vm__row--misc{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .nav__links{gap:18px}
  .nav__links a{font-size:13px}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .forum-grid{grid-template-columns:1fr}
  .foot__grid{grid-template-columns:1fr 1fr;gap:30px}
  .split{grid-template-columns:1fr;gap:28px}
}
@media(max-width:734px){
  .section{padding-block:80px}
  .section--tight{padding-block:60px}
  body{font-size:16px}
  .fact{grid-template-columns:1fr;gap:6px;padding:22px 2px}
  .prog__row{grid-template-columns:1fr;gap:8px}
  .prog__time{padding-top:0}
  .grid--2,.grid--3,.grid--4,.ex-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:26px 12px}
  .hl{grid-template-columns:64px 76px 1fr;gap:12px;font-size:13.5px}
  .form{padding:24px}
  .foot__grid{grid-template-columns:1fr}
  .cd-sep{display:none}
  .doclist__row{grid-template-columns:54px 1fr;gap:6px 14px}
  .doclist__d{grid-column:1/-1}
}
@media(max-width:560px){
  .nav__inner{gap:12px;padding-inline:16px}
  .nav__links{margin-inline-start:0;gap:14px}
  .nav__brand .brand-long{display:none}
  .nav__brand .brand-short{display:inline}
  .nav__cta{padding:7px 14px;font-size:12.5px}
  .cd-cell{min-width:72px;padding:13px 10px 11px}
  .hero{padding-block:calc(var(--nav-h-open) + 48px) 28px}
  .fab{right:14px;bottom:16px}
  .fab__label{display:none}
  .fab__btn{padding:13px;border-radius:50%}
  .venue-map{padding:18px;border-radius:var(--r-md)}
  .vm__row--7,.vm__row--6,.vm__row--misc{grid-template-columns:repeat(2,1fr)}
  .hl{grid-template-columns:1fr auto;gap:6px 12px}
  .hl__zone{grid-column:1/-1}
  .hl__area{text-align:left}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .js [data-anim]{opacity:1;transform:none}
  .mq__track{animation:none}
  .mq{overflow-x:auto}
}

@media print{
  .nav,.fab,.marquee{display:none}
  .section{padding-block:28px}
  body{font-size:12pt}
}