/* BioBuddy 黑客松 · 全站共用样式 */
:root{
  --blue:#006EFF;
  --blue-deep:#0052D9;
  --blue-light:#EAF2FF;
  --blue-mid:#5EA3FF;
  --green:#76B900;
  --ink:#0E2260;
  --ink-2:#3D4559;
  --ink-3:#7A869A;
  --bg:#F2F6FF;
  --bg-soft:#F2F6FF;
  --line:#E1E8F5;
  --r:12px;
  --ease:cubic-bezier(.16,1,.3,1);
  --num:"DIN Alternate","Bahnschrift","SF Pro Display","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px}
section{padding:112px 0;position:relative}
.ico{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:3px;color:var(--blue);text-transform:uppercase;margin-bottom:14px}
.h2{font-size:44px;font-weight:800;line-height:1.2;letter-spacing:-.5px}
.lead{font-size:17px;color:var(--ink-2);max-width:60ch;margin-top:16px}

/* 顶部阅读进度（CSS scroll-driven，不支持的浏览器自动隐藏） */
.progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:120;background:linear-gradient(90deg,var(--blue),var(--green));transform-origin:0 50%;transform:scaleX(0);display:none}
@supports (animation-timeline: scroll()){
  .progress{display:block;animation:grow linear both;animation-timeline:scroll(root)}
  @keyframes grow{to{transform:scaleX(1)}}
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:10px;white-space:nowrap;
  padding:15px 30px;border-radius:999px;font-size:16px;font-weight:700;
  border:none;transition:background .25s,box-shadow .25s,color .25s;will-change:transform;
}
.btn:active{scale:.97}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 30px rgba(0,110,255,.28)}
.btn-primary:hover{background:var(--blue-deep);box-shadow:0 14px 36px rgba(0,110,255,.38)}
.btn-line{background:rgba(255,255,255,.7);color:var(--ink);border:1.5px solid var(--line);backdrop-filter:blur(8px)}
.btn-line:hover{border-color:var(--blue);color:var(--blue)}
.btn .ico{width:18px;height:18px;transition:transform .3s var(--ease)}
.btn:hover .ico{transform:translateX(4px)}
.btn-sm{padding:9px 22px;font-size:14px}

/* ===== Nav ===== */
nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,box-shadow .3s,border-color .3s;border-bottom:1px solid transparent}
nav.solid{background:rgba(251,252,254,.86);backdrop-filter:blur(16px);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;white-space:nowrap}
.brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--blue-mid));display:grid;place-items:center;color:#fff}
.brand-mark .ico{width:16px;height:16px;stroke-width:2}
.nav-links{display:flex;gap:28px;font-size:14.5px;color:var(--ink-2)}
.nav-links a{position:relative;padding:4px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--blue);transform:scaleX(0);transition:transform .3s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-links a.active::after{transform:scaleX(1)}

/* ===== Hero ===== */
.hero{min-height:100dvh;padding:120px 0 72px;display:flex;align-items:center;position:relative;overflow:hidden;
  background:radial-gradient(900px 600px at 0% 0%,rgba(0,110,255,.09),transparent 60%),radial-gradient(700px 500px at 100% 100%,rgba(118,185,0,.08),transparent 60%),var(--bg)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;width:100%}
.hero-pill{display:inline-flex;align-items:center;gap:12px;padding:7px 8px 7px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--ink-2);box-shadow:0 6px 20px rgba(20,27,45,.05)}
.hero-pill b{background:var(--blue-light);color:var(--blue);padding:3px 12px;border-radius:999px;font-weight:700}
.hero h1{margin-top:26px;font-weight:900;line-height:1.02;letter-spacing:-2px}
.hero h1 .l1{display:block;font-size:72px;font-family:var(--num);letter-spacing:-2px}
.hero h1 .l2{display:block;font-size:64px;margin-top:6px}
.hero h1 .l1 span{display:inline-block;opacity:0;transform:translateY(40%) rotate(4deg);animation:rise .9s var(--ease) forwards}
.hero h1 .accent{color:var(--blue)}
@keyframes rise{to{opacity:1;transform:none}}
.hero-sub{margin-top:24px;font-size:18px;color:var(--ink-2);max-width:30em;opacity:0;animation:fadeup .9s var(--ease) .5s forwards}
.hero-cta{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap;opacity:0;animation:fadeup .9s var(--ease) .65s forwards}
@keyframes fadeup{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* KV 留位 */
.kv{position:relative;aspect-ratio:4/3.4;border-radius:28px;background:rgba(255,255,255,.55);backdrop-filter:blur(6px);
  border:1.5px dashed #B6C8E6;display:grid;place-items:center;text-align:center;color:var(--ink-3);
  opacity:0;animation:fadeup 1s var(--ease) .35s forwards;box-shadow:0 30px 80px rgba(0,110,255,.10)}
.kv::before,.kv::after{content:"";position:absolute;width:28px;height:28px;border:3px solid var(--blue);border-radius:4px}
.kv::before{top:-2px;left:-2px;border-right:none;border-bottom:none}
.kv::after{bottom:-2px;right:-2px;border-left:none;border-top:none}
.kv .ico{width:44px;height:44px;margin:0 auto 12px;opacity:.55}
.kv strong{display:block;font-size:15px;color:var(--ink-2)}
.kv small{font-size:12.5px}

/* ===== Marquee ===== */
.marquee{background:var(--ink);color:#fff;overflow:hidden;padding:18px 0;white-space:nowrap}
.mq-track{display:inline-flex;animation:mq 34s linear infinite}
.mq-track span{display:inline-flex;align-items:center;gap:40px;padding-right:40px;font-size:15px;font-weight:700;letter-spacing:2px}
.mq-track i{width:7px;height:7px;border-radius:50%;background:var(--blue-mid);display:inline-block}
@keyframes mq{to{transform:translateX(-50%)}}
.marquee:hover .mq-track{animation-play-state:paused}

/* ===== Manifesto ===== */
.manifesto p.big{font-size:38px;font-weight:700;line-height:1.55;letter-spacing:-.3px;max-width:26em;color:var(--ink)}
.manifesto mark{background:none;color:var(--blue);position:relative;white-space:nowrap}
.manifesto mark::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:10px;background:var(--blue-light);z-index:-1;transform:scaleX(0);transform-origin:left;transition:transform 1s var(--ease) .3s}
.manifesto.in mark::after{transform:scaleX(1)}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);margin-top:72px;border-top:1px solid var(--line)}
.stat{padding:32px 24px 0 0}
.stat + .stat{padding-left:24px;border-left:1px solid var(--line)}
.stat b{display:block;font-family:var(--num);font-size:52px;font-weight:700;line-height:1;color:var(--ink);letter-spacing:-1px}
.stat b small{font-size:.5em;color:var(--blue);margin-right:2px;vertical-align:.45em}
.stat > span{display:block;margin-top:10px;color:var(--ink-3);font-size:14px}

/* ===== Bento（为什么参加） ===== */
.why{background:var(--bg-soft)}
.bento{display:grid;grid-template-columns:repeat(3,1fr);grid-template-areas:"a d e";gap:20px;margin-top:56px}
.tile{position:relative;border-radius:var(--r);padding:32px;background:#fff;border:1px solid var(--line);overflow:hidden;transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.tile:hover{transform:translateY(-4px);box-shadow:0 20px 50px rgba(0,110,255,.10)}
/* 光标聚光边框 */
.tile::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(360px circle at var(--mx,50%) var(--my,50%),rgba(59,141,255,.14),transparent 60%)}
.tile:hover::after{opacity:1}
.tile .ico-wrap{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--blue-light);color:var(--blue);margin-bottom:22px}
.tile h3{font-size:22px;font-weight:800;line-height:1.35}
.tile p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.t-a{grid-area:a;background:linear-gradient(150deg,var(--blue) 0%,var(--blue-deep) 100%);color:#fff;border:none;display:flex;flex-direction:column;justify-content:space-between;min-height:340px}
.t-a::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.18) 1.2px,transparent 1.2px);background-size:22px 22px;mask-image:linear-gradient(200deg,#000 10%,transparent 70%);-webkit-mask-image:linear-gradient(200deg,#000 10%,transparent 70%)}
.t-a .ico-wrap{background:rgba(255,255,255,.14);color:#fff}
.t-a .mega{font-family:var(--num);font-size:96px;font-weight:700;line-height:.9;letter-spacing:-4px;position:relative}
.t-a .mega small{font-size:.42em;vertical-align:baseline;margin-right:8px;letter-spacing:0;font-weight:600}
.t-a p{color:rgba(255,255,255,.82)}
.t-a::after{background:radial-gradient(360px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.12),transparent 60%)}
.t-d{grid-area:d;background:var(--ink);color:#fff;border:none;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:0}
.t-d .ico-wrap{background:rgba(255,255,255,.1);color:#fff}
.t-d p{color:rgba(255,255,255,.7)}
.t-d .money{font-family:var(--num);font-size:96px;font-weight:700;line-height:.95;letter-spacing:-3px;white-space:nowrap;display:inline-flex;align-items:baseline}
.t-d .money small{font-size:.45em;color:rgba(255,255,255,.85);vertical-align:baseline;margin-right:10px;font-weight:600}
.t-e{grid-area:e;display:flex;flex-direction:column;justify-content:space-between;align-items:flex-start;background:linear-gradient(160deg,#F3F9E8,#fff 70%);border-color:#DCEBC0}
.t-e .ico-wrap{background:#E4F2C8;color:#4E7A00}
.t-e .e-text{flex:1}

/* ===== Journey（赛程） ===== */
.journey-track{position:relative;display:grid;grid-template-columns:repeat(5,1fr);margin-top:64px}
.journey-line{position:absolute;top:27px;left:10%;right:10%;height:4px;border-radius:4px;background:var(--line)}
.journey-fill{height:100%;width:0;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--blue-mid));transition:width 1.6s var(--ease)}
.node{position:relative;background:none;border:none;text-align:center;padding:0 8px;color:var(--ink)}
.node .dot{width:58px;height:58px;margin:0 auto 18px;border-radius:50%;background:#fff;border:2px solid var(--line);display:grid;place-items:center;color:var(--ink-3);transition:all .4s var(--ease);position:relative;z-index:1}
.node .dot .ico{width:24px;height:24px}
.node.done .dot{border-color:var(--blue);color:var(--blue)}
.node.now .dot{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 0 0 8px rgba(0,110,255,.12)}
.node.now .dot::after{content:"";position:absolute;inset:-8px;border-radius:50%;border:2px solid var(--blue);animation:ring 2s ease-out infinite}
@keyframes ring{from{opacity:.6;transform:scale(.9)}to{opacity:0;transform:scale(1.35)}}
.node.sel .dot{transform:scale(1.1)}
.node:hover .dot{border-color:var(--blue);color:var(--blue)}
.node.now:hover .dot{color:#fff}
.node .d{font-family:var(--num);font-size:15px;font-weight:700;color:var(--blue)}
.node .t{font-size:17px;font-weight:800;margin-top:2px}
.node .s{display:inline-block;margin-top:8px;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px;background:var(--bg-soft);color:var(--ink-3)}
.node.now .s{background:var(--blue-light);color:var(--blue)}
.node.done .s{background:#EEF6E0;color:#4E7A00}
.journey-panel{margin-top:44px;border-radius:var(--r);background:#fff;border:1px solid var(--line);padding:40px 44px;display:grid;grid-template-columns:240px 1fr;gap:40px;align-items:center;box-shadow:0 20px 60px rgba(20,27,45,.05)}
.jp-date{font-family:var(--num);font-size:56px;font-weight:700;line-height:1;color:var(--blue);letter-spacing:-1px}
.jp-date small{display:block;font-family:inherit;font-size:14px;color:var(--ink-3);letter-spacing:0;margin-top:10px;font-weight:600}
.jp-body h3{font-size:24px;font-weight:800}
.jp-body p{margin-top:8px;color:var(--ink-2);font-size:15.5px}
.jp-body ul{list-style:none;margin-top:16px;display:flex;flex-wrap:wrap;gap:10px}
.jp-body li{font-size:13.5px;padding:6px 14px;border-radius:999px;background:var(--bg-soft);color:var(--ink-2)}
.swap{animation:swap .5s var(--ease)}
@keyframes swap{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ===== Cities（站点 tabs） ===== */
.cities{background:var(--bg-soft)}
.city-wrap{display:grid;grid-template-columns:380px 1fr;gap:28px;margin-top:56px}
.city-list{display:flex;flex-direction:column;gap:10px}
.city-tab{display:flex;align-items:center;justify-content:space-between;padding:22px 26px;border-radius:16px;border:1.5px solid transparent;background:#fff;text-align:left;transition:all .35s var(--ease);color:var(--ink)}
.city-tab .cn{font-size:22px;font-weight:800}
.city-tab .en{font-size:12px;letter-spacing:2.5px;color:var(--ink-3);text-transform:uppercase}
.city-tab .dt{font-family:var(--num);font-size:20px;font-weight:700;color:var(--ink-3)}
.city-tab:hover{border-color:#C6D6F2}
.city-tab.on{border-color:var(--blue);box-shadow:0 12px 32px rgba(0,110,255,.12)}
.city-tab.on .dt{color:var(--blue)}
.city-tab.final{background:var(--ink);color:#fff}
.city-tab.final .en,.city-tab.final .dt{color:rgba(255,255,255,.6)}
.city-tab.final.on{border-color:var(--blue-mid)}
.city-tab.final.on .dt{color:#fff}
.city-panel{border-radius:var(--r);padding:48px;background:#fff;border:1px solid var(--line);position:relative;overflow:hidden;min-height:440px;display:flex;flex-direction:column;justify-content:space-between}
.city-panel.final{background:linear-gradient(150deg,var(--blue-deep),var(--blue));color:#fff;border:none}
.cp-ghost{position:absolute;right:-4px;top:-26px;font-family:var(--num);font-size:150px;opacity:.75;font-weight:700;line-height:1;color:var(--blue-light);letter-spacing:-8px;pointer-events:none;user-select:none}
.city-panel.final .cp-ghost{color:rgba(255,255,255,.08)}
.cp-tag{display:inline-block;font-size:12.5px;font-weight:700;padding:4px 14px;border-radius:999px;background:var(--blue-light);color:var(--blue)}
.city-panel.final .cp-tag{background:rgba(255,255,255,.16);color:#fff}
.cp-title{font-size:40px;font-weight:900;margin-top:18px;position:relative}
.cp-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:14px;color:var(--ink-2);font-size:15px;position:relative}
.cp-meta span{display:inline-flex;align-items:center;gap:8px}
.cp-meta .ico{width:18px;height:18px;color:var(--blue)}
.city-panel.final .cp-meta{color:rgba(255,255,255,.85)}
.city-panel.final .cp-meta .ico{color:#fff}
.cp-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;position:relative;margin-top:40px}
.cp-fact{padding:18px 20px;border-radius:14px;background:var(--bg-soft)}
.city-panel.final .cp-fact{background:rgba(255,255,255,.1)}
.cp-fact b{display:block;font-family:var(--num);font-size:26px;font-weight:700;line-height:1.2}
.cp-fact span{font-size:13px;color:var(--ink-3)}
.city-panel.final .cp-fact span{color:rgba(255,255,255,.7)}

/* ===== Awards（领奖台） ===== */
.podium{display:grid;grid-template-columns:1fr 1.15fr 1fr;align-items:end;gap:20px;margin-top:64px;max-width:980px;margin-left:auto;margin-right:auto}
.pod{text-align:center}
.pod-head{margin-bottom:18px}
.pod-head .rank{font-size:14px;font-weight:700;color:var(--ink-3);letter-spacing:1px}
.pod-head .amt{font-family:var(--num);font-size:46px;font-weight:700;line-height:1.1;letter-spacing:-1px}
.pod-head .amt small{font-size:.45em;vertical-align:.75em;color:var(--blue);margin-right:2px}
.pod-head .q{font-size:13.5px;color:var(--ink-3)}
.pod-bar{border-radius:18px 18px 6px 6px;background:linear-gradient(180deg,#DCE8FB,#EEF3FB);transform-origin:bottom;transform:scaleY(0);transition:transform 1.1s var(--ease);display:grid;place-items:center;font-family:var(--num);font-size:64px;font-weight:700;color:rgba(0,110,255,.25)}
.pod:nth-child(1) .pod-bar{height:170px;transition-delay:.25s}
.pod:nth-child(2) .pod-bar{height:250px;background:linear-gradient(180deg,var(--blue),var(--blue-deep));color:rgba(255,255,255,.28)}
.pod:nth-child(3) .pod-bar{height:130px;transition-delay:.4s}
.pod.champ .pod-head .amt{font-size:64px;color:var(--blue)}
.pod.champ .pod-head .amt small{color:var(--blue)}
.pod.champ .rank{color:var(--blue)}
.podium.in .pod-bar{transform:scaleY(1)}
.token-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px}
.tk{border-radius:16px;padding:22px 24px;background:#fff;border:1px solid var(--line);transition:transform .4s var(--ease),border-color .3s}
.tk:hover{transform:translateY(-4px);border-color:#C6D6F2}
.tk span{font-size:13.5px;color:var(--ink-3)}
.tk b{display:block;font-family:var(--num);font-size:32px;font-weight:700;line-height:1.2;margin-top:4px}
.tk b small{font-size:14px;color:var(--ink-3);font-family:"PingFang SC",sans-serif;font-weight:600;margin-left:4px}
.tk.hl{background:var(--blue-light);border-color:transparent}
.tk.hl b{color:var(--blue)}
.awards-note{margin-top:28px;display:flex;align-items:center;gap:14px;color:var(--ink-3);font-size:14px}
.awards-note::before{content:"";flex:0 0 24px;height:1px;background:var(--line)}

/* ===== Topics（封存赛题） ===== */
.vault{position:relative;border-radius:28px;padding:72px 64px;overflow:hidden;color:#fff;
  background:radial-gradient(600px 300px at 85% 0%,rgba(59,141,255,.45),transparent 60%),linear-gradient(140deg,#0B1A3A,#0F2C6B 60%,var(--blue-deep));
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.vault::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:36px 36px;mask-image:radial-gradient(ellipse at 70% 40%,#000,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at 70% 40%,#000,transparent 70%)}
.vault::after{content:"";position:absolute;top:0;bottom:0;width:40%;left:-40%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.08),transparent);animation:sweep 5s ease-in-out infinite}
@keyframes sweep{0%,30%{left:-40%}70%,100%{left:110%}}
.vault > *{position:relative;z-index:1}
.vault .lock{width:64px;height:64px;border-radius:18px;background:rgba(255,255,255,.1);display:grid;place-items:center;margin-bottom:28px}
.vault .lock .ico{width:30px;height:30px}
.vault h2{font-size:44px;font-weight:900;line-height:1.2}
.vault p{margin-top:14px;color:rgba(255,255,255,.75);font-size:16.5px;max-width:28em}
.vault .slots{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.vault .slots span{padding:8px 18px;border-radius:999px;border:1.5px dashed rgba(255,255,255,.3);color:rgba(255,255,255,.55);font-size:13.5px}
.cd-label{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:16px}
.cd{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.cd div{border-radius:16px;padding:20px 8px;text-align:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(6px)}
.cd b{display:block;font-family:var(--num);font-size:46px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.cd span{display:block;margin-top:8px;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:1px}

/* ===== Get involved（三种身份） ===== */
.roles{margin-top:56px;border-top:1px solid var(--line)}
.role{position:relative;display:grid;grid-template-columns:80px 1fr auto;gap:28px;align-items:center;padding:36px 28px;border-bottom:1px solid var(--line);overflow:hidden;isolation:isolate}
.role::before{content:"";position:absolute;inset:0;background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .6s var(--ease);z-index:-1}
.role:hover::before{transform:scaleX(1)}
.role .r-ico{width:64px;height:64px;border-radius:18px;background:var(--blue-light);color:var(--blue);display:grid;place-items:center;transition:all .4s var(--ease)}
.role .r-ico .ico{width:30px;height:30px}
.role h3{font-size:28px;font-weight:800;transition:color .3s}
.role p{color:var(--ink-2);margin-top:4px;transition:color .3s}
.role .r-go{width:56px;height:56px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;color:var(--ink);transition:all .4s var(--ease)}
.role:hover h3,.role:hover p{color:#fff}
.role:hover .r-ico{background:rgba(255,255,255,.16);color:#fff}
.role:hover .r-go{background:#fff;border-color:#fff;color:var(--blue);transform:rotate(-45deg)}

/* ===== Partners ===== */
.partners{background:var(--bg-soft)}
.p-groups{display:grid;grid-template-columns:1fr 1fr 2fr;gap:20px;margin-top:56px}
.p-group h4{font-size:13.5px;font-weight:700;color:var(--ink-3);margin-bottom:12px}
.p-cells{display:grid;gap:12px}
.p-group.wide .p-cells{grid-template-columns:repeat(3,1fr)}
.logo-cell{height:120px;border-radius:16px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;font-weight:800;font-size:20px;letter-spacing:-.3px;transition:transform .4s var(--ease),box-shadow .4s}
.logo-cell:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(20,27,45,.07)}
.logo-cell .nv{color:var(--green);letter-spacing:1px}
.logo-cell.open{border:1.5px dashed #BACBE6;background:transparent;color:var(--ink-3);font-size:14px;font-weight:600;gap:6px;grid-template-rows:auto auto;align-content:center}
.logo-cell.open .ico{width:22px;height:22px;margin:0 auto}
.logo-cell.open:hover{border-color:var(--blue);color:var(--blue)}
.p-note{margin-top:16px;font-size:12.5px;color:var(--ink-3)}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 28px;margin-top:56px;align-items:start}
.qa{border-radius:16px;background:#fff;border:1px solid var(--line);transition:border-color .3s,box-shadow .3s}
.qa.open{border-color:var(--blue);box-shadow:0 14px 34px rgba(0,110,255,.08)}
.qa button{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 24px;background:none;border:none;font-size:16.5px;font-weight:700;text-align:left;color:var(--ink)}
.qa .pm{width:30px;height:30px;border-radius:50%;background:var(--bg-soft);display:grid;place-items:center;color:var(--blue);transition:transform .4s var(--ease),background .3s}
.qa .pm .ico{width:16px;height:16px;stroke-width:2}
.qa.open .pm{transform:rotate(45deg);background:var(--blue-light)}
.qa .ans{display:grid;grid-template-rows:0fr;transition:grid-template-rows .45s var(--ease)}
.qa.open .ans{grid-template-rows:1fr}
.qa .ans > div{overflow:hidden}
.qa .ans p{padding:0 24px 22px;color:var(--ink-2);font-size:15px}

/* ===== Final CTA ===== */
.final-sec{padding:0 0 112px}
.final-box{position:relative;border-radius:32px;overflow:hidden;padding:96px 64px;text-align:center;color:#fff;background:linear-gradient(140deg,var(--blue) 0%,var(--blue-deep) 100%)}
.final-box canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55}
.final-box > *:not(canvas){position:relative}
.final-box h2{font-size:56px;font-weight:900;line-height:1.15;letter-spacing:-1px}
.final-box p{margin:18px auto 40px;max-width:32em;color:rgba(255,255,255,.82);font-size:17px}
.final-box .btn-primary{background:#fff;color:var(--blue);box-shadow:0 14px 40px rgba(0,0,0,.2)}
.final-box .btn-primary:hover{background:#F0F5FF}

footer{background:var(--ink);color:#8F99AD;padding:64px 0 36px;font-size:14px}
.f-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08)}
.f-top .brand{color:#fff;margin-bottom:14px}
.f-top h5{color:#fff;font-size:14px;margin-bottom:14px}
.f-top a{display:block;margin-bottom:10px;transition:color .2s}
.f-top a:hover{color:#fff}
.f-bot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:28px}

/* reveal */
.rv{opacity:0;transform:translateY(32px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}.rv.d4{transition-delay:.32s}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv,.hero h1 .l1 span,.hero-sub,.hero-cta,.kv{opacity:1!important;transform:none!important}
  .pod-bar{transform:none!important}
  .manifesto mark::after{transform:none!important}
}

@media (max-width:1024px){
  .nav-links{display:none}
  .hero-grid,.vault,.city-wrap,.journey-panel{grid-template-columns:1fr}
  .kv{aspect-ratio:16/10}
  .bento{grid-template-columns:1fr 1fr;grid-template-areas:"a d" "e e"}
  .p-groups{grid-template-columns:1fr 1fr}
  .p-group.wide{grid-column:1/-1}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  section{padding:72px 0}
  .hero{padding-top:100px}
  .hero h1 .l1{font-size:44px}
  .hero h1 .l2{font-size:40px}
  .h2,.vault h2{font-size:32px}
  .manifesto p.big{font-size:24px}
  .stat-row{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){padding-left:0;border-left:none}
  .stat b{font-size:40px}
  .bento{grid-template-columns:1fr;grid-template-areas:"a" "d" "e"}
  .t-a{min-height:340px}.t-a .mega{font-size:88px}
  .t-d,.t-e{flex-direction:column;align-items:flex-start}
  .journey-track{grid-template-columns:1fr;gap:18px}
  .journey-line{display:none}
  .node{display:grid;grid-template-columns:58px 1fr;gap:16px;text-align:left;align-items:center}
  .node .dot{margin:0}
  .journey-panel{padding:28px}
  .cp-facts{grid-template-columns:1fr}
  .city-panel{padding:32px 24px}
  .podium{grid-template-columns:1fr;gap:28px}
  .pod:nth-child(2){order:-1}
  .pod-bar{display:none}
  .token-row{grid-template-columns:1fr 1fr}
  .vault{padding:44px 24px}
  .role{grid-template-columns:56px 1fr;padding:28px 12px}
  .role .r-go{display:none}
  .role h3{font-size:22px}
  .p-groups{grid-template-columns:1fr}
  .p-group.wide .p-cells{grid-template-columns:1fr 1fr}
  .faq-grid{grid-template-columns:1fr}
  .final-box{padding:64px 24px}
  .final-box h2{font-size:36px}
  .f-top{grid-template-columns:1fr 1fr}
}

/* =====================================================
   多页结构新增
   ===================================================== */
:root{--radius:16px;--shadow:0 8px 32px rgba(0,110,255,.08);--red:#D93826;--nv-green:#76B900}

/* Nav：右侧按钮组 + 移动端菜单 */
.nav-right{display:flex;align-items:center;gap:12px}
nav .btn-sm{padding:9px 22px;font-size:14px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);place-items:center}
.nav-toggle .ico{width:20px;height:20px}
nav.open{background:#fff;border-bottom-color:var(--line)}

/* 子页头图 */
.page-hero{position:relative;overflow:hidden;padding:172px 0 96px;border-bottom:1px solid var(--line);
  background:radial-gradient(800px 480px at 0% 0%,rgba(0,110,255,.09),transparent 60%),radial-gradient(600px 420px at 100% 100%,rgba(118,185,0,.07),transparent 60%),var(--bg)}
.page-hero canvas{position:absolute;inset:0;width:100%;height:100%}
.page-hero .wrap{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;margin-bottom:28px;font-size:13.5px;color:var(--ink-3);animation:fadeup .8s var(--ease) both}
.crumb a:hover{color:var(--blue)}
.crumb i{font-style:normal;opacity:.5}
.page-hero .eyebrow{animation:fadeup .8s var(--ease) .05s both}
.page-hero h1{font-size:76px;font-weight:900;line-height:1.08;letter-spacing:-1.5px;animation:fadeup .9s var(--ease) .1s both}
.page-hero h1 .accent{color:var(--blue)}
.page-hero .lead{font-size:18px;animation:fadeup .9s var(--ease) .2s both}
.ph-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;animation:fadeup .9s var(--ease) .3s both}
.ph-facts span{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink-2)}
.ph-facts .ico{width:16px;height:16px;color:var(--blue)}
.ph-index{position:absolute;right:28px;bottom:-34px;z-index:0;font-family:var(--num);font-size:240px;font-weight:700;line-height:1;letter-spacing:-10px;color:rgba(0,110,255,.06);pointer-events:none;user-select:none}

/* 区块标题 */
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap}
.more{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--blue);font-size:15px}
.more .ico{width:18px;height:18px;transition:transform .3s var(--ease)}
.more:hover .ico{transform:translateX(4px)}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.soft{background:var(--bg-soft)}

/* 首页：各页入口 */
.explore{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:56px}
.ex{position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:36px;min-height:320px;padding:30px 28px;border-radius:var(--r);background:#fff;border:1px solid var(--line);overflow:hidden;transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .3s}
.ex::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .3s;background:radial-gradient(320px circle at var(--mx,50%) var(--my,50%),rgba(59,141,255,.14),transparent 60%)}
.ex:hover{transform:translateY(-6px);box-shadow:0 24px 56px rgba(0,110,255,.12);border-color:#C6D6F2}
.ex:hover::after{opacity:1}
.ex-no{font-family:var(--num);font-size:13px;font-weight:700;letter-spacing:2.5px;color:var(--ink-3)}
.ex h3{font-size:26px;font-weight:800;margin-top:10px}
.ex p{font-size:14.5px;color:var(--ink-2);margin-top:6px}
.ex-foot{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;position:relative}
.ex-big{font-family:var(--num);font-size:46px;font-weight:700;line-height:1;letter-spacing:-1px;color:var(--blue)}
.ex-big small{font-size:.45em;vertical-align:.8em;margin-right:2px}
.ex-big.txt{font-family:inherit;font-size:22px;font-weight:800;letter-spacing:0;line-height:1.3}
.ex-cap{display:block;margin-top:8px;font-size:13px;color:var(--ink-3)}
.ex .go{flex-shrink:0;width:46px;height:46px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;transition:all .4s var(--ease)}
.ex .go .ico{width:18px;height:18px}
.ex:hover .go{background:var(--blue);border-color:var(--blue);color:#fff;transform:rotate(-45deg)}
.ex.dark{background:linear-gradient(150deg,var(--blue),var(--blue-deep));color:#fff;border:none}
.ex.dark::after{background:radial-gradient(320px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.14),transparent 60%)}
.ex.dark p,.ex.dark .ex-no,.ex.dark .ex-cap{color:rgba(255,255,255,.72)}
.ex.dark .ex-big{color:#fff}
.ex.dark .go{border-color:rgba(255,255,255,.35)}
.ex.dark:hover .go{background:#fff;border-color:#fff;color:var(--blue)}

/* 步骤卡（奖项路径 / 赛题准备） */
.steps{display:grid;grid-template-columns:repeat(var(--cols,3),1fr);gap:20px;margin-top:56px}
.step{position:relative;padding:32px 30px;border-radius:var(--r);background:#fff;border:1px solid var(--line);transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.step:hover{transform:translateY(-4px);box-shadow:0 20px 50px rgba(0,110,255,.10)}
.st-top{display:flex;align-items:center;justify-content:space-between}
.st-no{font-family:var(--num);font-size:52px;font-weight:700;line-height:1;color:#D6E3F8;letter-spacing:-1px}
.step .ico-wrap{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--blue-light);color:var(--blue)}
.step h3{font-size:21px;font-weight:800;margin-top:22px}
.step p{margin-top:8px;font-size:15px;color:var(--ink-2)}
.st-tag{display:inline-block;margin-top:18px;font-size:13px;font-weight:700;padding:5px 14px;border-radius:999px;background:var(--blue-light);color:var(--blue)}
.step.hl{background:var(--ink);color:#fff;border:none}
.step.hl p{color:rgba(255,255,255,.7)}
.step.hl .st-no{color:rgba(255,255,255,.14)}
.step.hl .ico-wrap{background:rgba(255,255,255,.1);color:#fff}
.step.hl .st-tag{background:rgba(255,255,255,.14);color:#fff}
.step a.more{margin-top:18px}

/* 下一页 */
.next-sec{padding:0 0 112px}
.next-page{position:relative;isolation:isolate;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:48px 52px;border-radius:28px;background:var(--ink);color:#fff}
.next-page::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(120deg,var(--blue),var(--blue-deep));transform:scaleX(0);transform-origin:left;transition:transform .7s var(--ease)}
.next-page:hover::before{transform:scaleX(1)}
.next-page small{display:block;font-size:13px;font-weight:700;letter-spacing:3px;color:rgba(255,255,255,.6);text-transform:uppercase}
.next-page b{display:block;margin-top:6px;font-size:44px;font-weight:900;line-height:1.15}
.next-page .np-sub{display:block;margin-top:6px;font-size:15px;color:rgba(255,255,255,.7)}
.next-page .go{flex-shrink:0;width:76px;height:76px;border-radius:50%;border:1.5px solid rgba(255,255,255,.3);display:grid;place-items:center;transition:all .5s var(--ease)}
.next-page .go .ico{width:28px;height:28px}
.next-page:hover .go{background:#fff;border-color:#fff;color:var(--blue);transform:rotate(-45deg)}

@media (prefers-reduced-motion: reduce){
  .crumb,.page-hero .eyebrow,.page-hero h1,.page-hero .lead,.ph-facts{animation:none!important;opacity:1!important;transform:none!important}
}
@media (max-width:1024px){
  .nav-toggle{display:grid}
  nav.open .nav-links{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;padding:8px 32px 20px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 40px rgba(20,27,45,.08)}
  nav.open .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  nav.open .nav-links a::after{display:none}
  .explore{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .page-hero h1{font-size:60px}
  .ph-index{font-size:180px}
}
@media (max-width:767px){
  .page-hero{padding:120px 0 64px}
  .page-hero h1{font-size:42px;letter-spacing:-.5px}
  .ph-index{font-size:120px;right:12px;bottom:-18px;letter-spacing:-5px}
  .explore,.steps{grid-template-columns:1fr}
  .ex{min-height:auto}
  .next-sec{padding-bottom:72px}
  .next-page{padding:32px 24px}
  .next-page b{font-size:30px}
  .next-page .go{width:56px;height:56px}
  nav.open .nav-links{padding:8px 20px 20px}
  nav .btn-sm{padding:8px 16px}
}

/* =====================================================
   CSIG 市场部制式（参考《CSIG市场部邮件EDM模板》）
   - 腾讯云蓝 #006EFF 头图 Banner + 品牌 Logo
   - 浅蓝底 #F2F6FF 上堆叠白色圆角内容卡
   - 卡片标题居中 + 虚线分隔；小标题蓝色竖条
   - 蓝色页脚：联系我们 / 关注我们 / 隐私保护指引 / Copyright
   ===================================================== */
body{background:var(--bg)}
.btn,.btn-sm{border-radius:6px}

/* ---------- 品牌 Logo（导航） ---------- */
.brand{display:flex;align-items:center;gap:14px;font-weight:800;font-size:17px;white-space:nowrap}
.brand-logo,.brand-home{display:flex;align-items:center;gap:14px}
.brand img{height:24px;width:auto;display:block}
.brand-div{width:1px;height:18px;background:currentColor;opacity:.3}
.brand-name{font-size:16px;font-weight:800}
nav .logo-w{display:none}
nav:not(.solid):not(.open) .logo-w{display:block}
nav:not(.solid):not(.open) .logo-c{display:none}
nav:not(.solid):not(.open) .brand{color:#fff}
nav:not(.solid):not(.open) .nav-links{color:rgba(255,255,255,.82)}
nav:not(.solid):not(.open) .nav-links a:hover,nav:not(.solid):not(.open) .nav-links a.active{color:#fff}
nav:not(.solid):not(.open) .nav-links a::after{background:#fff}
nav:not(.solid):not(.open) .btn-primary{background:#fff;color:var(--blue);box-shadow:none}
nav:not(.solid):not(.open) .nav-toggle{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);color:#fff}
nav.solid{background:rgba(255,255,255,.94)}
.nl-cta{display:none}

/* ---------- 蓝色头图 Banner（首页 + 子页） ---------- */
.hero,.page-hero{color:#fff;border-bottom:none;
  background:radial-gradient(520px 520px at 82% 38%,rgba(94,163,255,.55),transparent 70%),linear-gradient(115deg,#006EFF 0%,#0A5BF0 55%,#0052D9 100%)}
.hero::before,.page-hero::before{content:"";position:absolute;right:-260px;top:50%;width:1100px;height:1100px;transform:translateY(-50%);border-radius:50%;pointer-events:none;
  background:repeating-radial-gradient(circle,rgba(255,255,255,.08) 0 1px,transparent 1px 84px);
  mask-image:radial-gradient(circle,#000 30%,transparent 70%);-webkit-mask-image:radial-gradient(circle,#000 30%,transparent 70%)}
.hero{min-height:min(100dvh,880px)}
.hero h1 .accent,.page-hero h1 .accent{background:linear-gradient(90deg,#7DF2C6,#A9DCFF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:rgba(255,255,255,.86)}
.hero-pill{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);color:#fff;box-shadow:none;backdrop-filter:blur(8px)}
.hero-pill img{height:20px;width:auto;display:block}
.hero-pill i{font-style:normal;opacity:.6}
.hero-pill b{background:#fff;color:var(--blue)}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:18px;font-size:15px;color:rgba(255,255,255,.9);opacity:0;animation:fadeup .9s var(--ease) .58s forwards}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta .ico{width:18px;height:18px}
.hero .btn-primary,.page-hero .btn-primary{background:#fff;color:var(--blue);box-shadow:0 10px 30px rgba(0,30,90,.25)}
.hero .btn-primary:hover{background:#EAF2FF}
.hero .btn-line{background:transparent;border:1.5px solid rgba(255,255,255,.6);color:#fff}
.hero .btn-line:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.1)}
.kv{border-radius:var(--r);background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.45);color:rgba(255,255,255,.75);box-shadow:none}
.kv::before,.kv::after{border-color:#fff}
.kv strong{color:#fff}
.crumb{color:rgba(255,255,255,.7)}
.crumb a:hover{color:#fff}
.page-hero .eyebrow{color:#A9D2FF}
.page-hero .lead{color:rgba(255,255,255,.86)}
.ph-facts span{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#fff}
.ph-facts .ico{color:#fff}
.ph-index{color:rgba(255,255,255,.08)}

/* ---------- 浅蓝底 + 白色内容卡 ---------- */
section,.why,.cities,.partners,.soft{background:transparent}
section{padding:12px 0}
header + section,header + .marquee + section{padding-top:32px}
section > .wrap{width:calc(100% - 64px);max-width:1176px;padding:64px 56px;background:#fff;border-radius:var(--r);box-shadow:0 2px 16px rgba(14,34,96,.04)}
.final-sec > .wrap,.next-sec > .wrap{background:none;box-shadow:none;padding:0}
.final-sec,.next-sec{padding:12px 0 48px}
/* 卡片标题：居中 + 虚线分隔（对齐 EDM「重磅嘉宾」样式） */
section .eyebrow{text-align:center}
.h2{text-align:center;font-size:36px;color:var(--ink);margin:0 -56px;padding:0 56px 28px;border-bottom:1px dashed #CBD7EE}
section .lead{text-align:center;margin:24px auto 0}
/* 小标题：蓝色竖条（对齐 EDM「尊敬的嘉宾」样式） */
.jp-body h3,.p-group h4,.step h3{position:relative;padding-left:16px}
.jp-body h3::before,.p-group h4::before,.step h3::before{content:"";position:absolute;left:0;top:.25em;bottom:.25em;width:4px;border-radius:2px;background:var(--blue)}
.step.hl h3::before{background:#fff}
.p-group h4{font-size:15px;color:var(--ink)}
/* 卡片内元素换成浅底 */
.tile:not(.t-a):not(.t-d):not(.t-e),.step:not(.hl),.tk:not(.hl),.qa,.logo-cell:not(.open),.journey-panel,.city-tab:not(.final),.city-panel:not(.final),.ex:not(.dark){background:#F7F9FF;border-color:#E6ECF8;box-shadow:none}
.cp-fact{background:#fff}
.journey-panel{box-shadow:none}
.manifesto p.big{font-size:32px;margin:0 auto;text-align:center}
.manifesto mark{white-space:normal}
.stat-row{margin-top:56px}
.vault,.final-box,.next-page{border-radius:var(--r)}
.vault{background:radial-gradient(600px 300px at 85% 0%,rgba(94,163,255,.45),transparent 60%),linear-gradient(140deg,#0E2260,#0B2F86 60%,var(--blue-deep))}
.logo-cell.brand-cell img{height:40px;width:auto}
.logo-cell.has-sub{grid-template-rows:auto auto;align-content:center;justify-items:center;gap:2px}
.logo-cell.has-sub small{font-size:12.5px;font-weight:600;color:var(--blue)}

/* ---------- 底部邀约卡（对齐 EDM「诚邀您参与活动」） ---------- */
.final-box{background:#fff;color:var(--ink);padding:72px 48px;box-shadow:0 2px 16px rgba(14,34,96,.04)}
.final-box canvas{opacity:1}
.final-box .eyebrow{text-align:center}
.final-box h2{font-size:40px;color:var(--ink)}
.final-box p{color:var(--ink-2);margin:14px auto 32px}
.final-box .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 30px rgba(0,110,255,.28);padding:15px 64px}
.final-box .btn-primary:hover{background:var(--blue-deep)}

/* ---------- 页脚（CSIG 制式） ---------- */
footer.csig-foot{background:#006EFF;color:rgba(255,255,255,.88);padding:48px 0 32px;font-size:14px}
.cf-top{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap}
.cf-logo{height:28px;width:auto;display:block;margin-bottom:22px}
.csig-foot h5{display:inline-flex;align-items:center;gap:4px;font-size:17px;font-weight:800;color:#fff;margin-bottom:8px}
.csig-foot h5 .ico{width:18px;height:18px;stroke-width:2}
.cf-contact{max-width:560px}
.cf-contact p{line-height:1.8}
.cf-links{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin-top:14px;font-weight:700;color:#fff}
.cf-links i{font-style:normal;opacity:.5;font-weight:400}
.cf-links a:hover{text-decoration:underline}
.cf-qrs{display:flex;gap:24px;margin-top:6px}
.qr{text-align:center;font-size:12.5px}
.qr-box{width:96px;height:96px;border-radius:6px;background:rgba(255,255,255,.12);border:1.5px dashed rgba(255,255,255,.5);display:grid;place-items:center;font-size:12px;color:rgba(255,255,255,.8);margin-bottom:8px}
.cf-bot{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.2);font-size:12.5px;color:rgba(255,255,255,.8)}
.cf-privacy{display:inline-block;font-size:14px;font-weight:700;color:#fff;margin-bottom:4px}
.cf-privacy:hover{text-decoration:underline}

@media (max-width:1024px){
  nav.open .nav-links .nl-cta{display:block;color:var(--blue);font-weight:700;border-bottom:none}
}
@media (max-width:767px){
  section > .wrap{width:calc(100% - 32px);padding:40px 20px}
  .h2{font-size:28px;margin:0 -20px;padding:0 20px 22px}
  .manifesto p.big{font-size:22px}
  .final-box{padding:48px 20px}
  .final-box h2{font-size:28px}
  .brand{gap:10px}
  .brand img{height:20px}
  .brand-name{font-size:14px}
  nav .nav-right .btn-sm{display:none}
  .hero-meta{gap:12px 20px}
  .cf-qrs{gap:16px}
}

/* 报名页锚点 + 微盘提交入口 */
.panel,.form-zone{scroll-margin-top:84px}
.steps-4{--cols:4}
@media (max-width:1024px){.steps-4{--cols:2}}
@media (max-width:767px){.steps-4{--cols:1}}
.wedrive{display:inline-flex;align-items:center;gap:10px;margin-top:26px;padding:11px 24px;border-radius:6px;border:1.5px solid rgba(255,255,255,.5);color:#fff;font-size:14.5px;font-weight:700;transition:all .3s var(--ease)}
.wedrive .ico{width:18px;height:18px}
.wedrive:hover{background:#fff;color:var(--blue);border-color:#fff}

/* 头图内链接 + BioBuddy 产品页 */

a.logo-cell{color:inherit}
a.logo-cell:hover{border-color:#C6D6F2}

/* 首页：了解 BioBuddy 独立按钮 */
.hero-buddy{margin-top:16px;opacity:0;animation:fadeup .9s var(--ease) .72s forwards}
.btn-buddy{display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border-radius:6px;
  background:rgba(255,255,255,.1);border:1.5px solid rgba(255,255,255,.4);color:#fff;
  font-size:15px;font-weight:700;backdrop-filter:blur(8px);transition:background .3s,border-color .3s}
.btn-buddy .bb-dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#7DF2C6,#00D4D8);flex-shrink:0}
.btn-buddy .ico{width:17px;height:17px;transition:transform .3s var(--ease)}
.btn-buddy:hover{background:rgba(255,255,255,.2);border-color:#fff}
.btn-buddy:hover .ico{transform:translateX(4px)}

/* 亮点区决赛卡：金额说明 */
a.tile.t-d{color:#fff}
.t-d .money-cap{margin-top:8px;font-size:14px;font-weight:700;color:rgba(255,255,255,.85)}
.t-d .d-more{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:14px;font-weight:700;color:rgba(255,255,255,.75);transition:color .3s}
.t-d .d-more .ico{width:16px;height:16px;transition:transform .3s var(--ease)}
.t-d:hover .d-more{color:#fff}
.t-d:hover .d-more .ico{transform:translateX(4px)}

/* 奖项页：分区块布局 */
.token-row.cols-3{grid-template-columns:repeat(3,1fr)}
.token-row.cols-1{grid-template-columns:1fr;max-width:560px;margin-left:auto;margin-right:auto}
.tk-cond{margin-top:10px;font-size:13.5px;font-weight:700;color:var(--blue)}
@media (max-width:767px){.token-row.cols-3{grid-template-columns:1fr}}

/* 决赛卡：数字为主角 */
.t-d .d-cap{font-size:13px;font-weight:800;letter-spacing:2px;color:rgba(255,255,255,.55);text-transform:uppercase;margin-bottom:14px}
.t-d .d-desc{margin-top:22px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);align-self:stretch;font-size:14.5px;color:rgba(255,255,255,.75)}
.t-d .d-more{margin-top:26px}
.t-d .money-cap{display:none}
@media (max-width:1024px){.t-d .money{font-size:72px}}
@media (max-width:767px){.t-d .money{font-size:64px}}

/* 首页 Slogan */
.hero-slogan{margin-top:22px;font-size:26px;font-weight:800;letter-spacing:6px;color:#fff;
  opacity:0;animation:fadeup .9s var(--ease) .42s forwards}
@media (max-width:767px){.hero-slogan{font-size:19px;letter-spacing:3px}}

/* 子页头图按钮 */
.ph-cta{margin-top:30px;animation:fadeup .9s var(--ease) .26s both}

/* =====================================================
   设计升级 v2（Hero 倒计时 / 宣言两段式 / 票根 / 平台栈 / 非对称 Bento）
   ===================================================== */

/* ---------- ¥ 全站基线对齐 ---------- */
.stat b small,.pod-head .amt small,.ex-big small,.tk-num small{vertical-align:baseline;font-weight:600;letter-spacing:0}
.stat b small{font-size:.48em;margin-right:4px}
.pod-head .amt small{font-size:.5em;margin-right:4px}
.ex-big small{font-size:.5em;margin-right:4px}

/* ---------- Hero 阶段倒计时 ---------- */
.hero-clock{margin-top:28px;max-width:540px;padding:20px 24px 18px;border-radius:12px;
  background:linear-gradient(135deg,rgba(255,255,255,.14),rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.24);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18),0 18px 40px rgba(0,30,110,.18);
  opacity:0;animation:fadeup .9s var(--ease) .52s forwards}
.hc-head{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:13.5px;color:rgba(255,255,255,.78)}
.hc-label b{color:#fff;font-weight:800;margin:0 3px}
.hc-date{font-family:var(--num);font-size:13px;font-weight:700;letter-spacing:1px;padding:3px 10px;border-radius:4px;background:rgba(255,255,255,.16);color:#fff}
.hc-nums{display:flex;align-items:flex-start;gap:12px;margin-top:12px}
.hc-nums > div{min-width:62px}
.hc-nums b{display:block;font-family:var(--num);font-size:48px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;color:#fff;letter-spacing:-1px}
.hc-nums span{display:block;margin-top:7px;font-size:11.5px;color:rgba(255,255,255,.6);letter-spacing:2px}
.hc-nums > i{font-style:normal;font-family:var(--num);font-size:34px;line-height:1.15;color:rgba(255,255,255,.32)}
.hc-tbd{font-size:17px;font-weight:700;color:#fff;padding:6px 0}
.hc-steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.16)}
.hc-steps li{position:relative;display:flex;flex-direction:column;padding-top:18px;font-size:11.5px;color:rgba(255,255,255,.5)}
.hc-steps li::before{content:"";position:absolute;top:4px;left:14px;right:6px;height:1.5px;background:rgba(255,255,255,.18)}
.hc-steps li:last-child::before{display:none}
.hc-steps li i{position:absolute;top:0;left:0;width:10px;height:10px;border-radius:50%;border:1.5px solid rgba(255,255,255,.45)}
.hc-steps li b{font-size:13px;font-weight:700;color:rgba(255,255,255,.72);line-height:1.3}
.hc-steps li span{font-family:var(--num);letter-spacing:.5px}
.hc-steps li.done i{background:#fff;border-color:#fff}
.hc-steps li.done::before{background:rgba(255,255,255,.7)}
.hc-steps li.now i,.hc-steps li.next i{border-color:#7DF2C6;background:#7DF2C6}
.hc-steps li.now i::after,.hc-steps li.next i::after{content:"";position:absolute;inset:-5px;border-radius:50%;border:1.5px solid #7DF2C6;animation:ring 2s ease-out infinite}
.hc-steps li.now b,.hc-steps li.next b{color:#fff}
.hc-steps li.now span,.hc-steps li.next span{color:#7DF2C6}

/* ---------- 宣言：两段式 ---------- */
.beats{display:grid;grid-template-columns:1fr 1fr;gap:0 64px;align-items:start}
.beat{position:relative;padding-top:26px;border-top:2px solid var(--ink)}
.beat-2{margin-top:88px;border-top-color:var(--blue)}
.beat-tag{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;letter-spacing:3px;color:var(--ink-3)}
.beat-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink)}
.beat-2 .beat-tag{color:var(--blue)}
.beat-2 .beat-tag::before{background:var(--blue)}
.beat-txt{position:relative;z-index:0;margin-top:16px;font-size:26px;font-weight:700;line-height:1.65;letter-spacing:-.2px;color:var(--ink)}
.beat-2 .beat-txt{font-size:30px;font-weight:800}

/* ---------- 票根数据卡 ---------- */
.tickets{--cut:112px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:72px}
.ticket{position:relative;display:flex;flex-direction:column;border-radius:12px;background:#F4F7FE;color:var(--ink);
  -webkit-mask:radial-gradient(circle 9px at 0 var(--cut),transparent 96%,#000) left/51% 100% no-repeat,radial-gradient(circle 9px at 100% var(--cut),transparent 96%,#000) right/51% 100% no-repeat;
          mask:radial-gradient(circle 9px at 0 var(--cut),transparent 96%,#000) left/51% 100% no-repeat,radial-gradient(circle 9px at 100% var(--cut),transparent 96%,#000) right/51% 100% no-repeat;
  transition:transform .5s var(--ease)}
.ticket:hover{transform:translateY(-4px)}
.tk-top{height:var(--cut);padding:20px 22px 0;display:flex;flex-direction:column;justify-content:space-between}
.tk-kind{font-size:12px;font-weight:800;letter-spacing:3px;color:var(--ink-3)}
.tk-num{display:flex;align-items:baseline;font-family:var(--num);font-size:46px;font-weight:700;line-height:1;letter-spacing:-1px;white-space:nowrap;padding-bottom:18px;color:var(--ink)}
.tk-num small{font-size:.48em;margin-right:4px;color:var(--blue)}
.tk-num small.unit{font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;font-weight:700;margin:0 0 0 6px;color:var(--ink-3)}
.tk-bot{position:relative;flex:1;padding:16px 22px 20px;margin:0 14px;border-top:1.5px dashed #C3D2EC}
.tk-bot{padding-left:8px;padding-right:8px}
.tk-bot b{display:block;font-size:15px;font-weight:800;line-height:1.4}
.tk-bot span{display:block;margin-top:4px;font-size:13px;color:var(--ink-3)}
.ticket::after{content:"";position:absolute;right:20px;top:22px;width:34px;height:14px;opacity:.22;
  background:repeating-linear-gradient(90deg,currentColor 0 2px,transparent 2px 4px,currentColor 4px 5px,transparent 5px 8px)}
.ticket.hl{background:var(--ink);color:#fff}
.ticket.hl .tk-kind,.ticket.hl .tk-bot span{color:rgba(255,255,255,.6)}
.ticket.hl .tk-num{color:#fff}
.ticket.hl .tk-num small{color:#7DF2C6}
.ticket.hl .tk-bot{border-top-color:rgba(255,255,255,.22)}
.ticket.hl::after{opacity:.35}

/* ---------- 平台栈 ---------- */
.stack-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:center;margin-top:56px}
.sc-lead{font-size:21px;font-weight:700;line-height:1.75;color:var(--ink)}
.sc-lead b{color:var(--blue)}
.sc-sub{margin-top:16px;font-size:15.5px;color:var(--ink-2);padding-left:16px;border-left:3px solid var(--blue)}
.stack-copy .more{margin-top:0}
.sc-links{display:flex;flex-direction:column;align-items:flex-start;gap:14px;margin-top:28px;padding-top:24px;border-top:1px dashed #CBD7EE}
.stack{display:flex;flex-direction:column;gap:10px}
.layer{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;padding:22px 24px;border-radius:12px;transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.layer b{display:block;font-size:19px;font-weight:800;line-height:1.3}
.layer small{display:block;margin-top:3px;font-size:13px}
.ly-tag{width:76px;text-align:center;font-size:12px;font-weight:800;letter-spacing:2px;padding:5px 10px;border-radius:4px}
.ly-ico{width:22px;height:22px}
.l-top{margin:0 56px;border:1.5px dashed #9DB8E8;color:var(--ink);
  background:repeating-linear-gradient(135deg,rgba(0,110,255,.035) 0 10px,transparent 10px 20px),#fff}
.l-top .ly-tag{background:var(--blue-light);color:var(--blue)}
.l-top small{color:var(--ink-3)}
.l-top .ly-ico{color:var(--blue)}
.l-mid{margin:0 28px;color:#fff;background:linear-gradient(120deg,var(--blue),var(--blue-deep));box-shadow:0 16px 36px rgba(0,110,255,.26)}
.l-mid .ly-tag{background:rgba(255,255,255,.18);color:#fff}
.l-mid small{color:rgba(255,255,255,.78)}
.l-mid .ly-ico{transition:transform .3s var(--ease)}
.l-mid:hover{transform:translateY(-3px);box-shadow:0 22px 44px rgba(0,110,255,.34)}
.l-mid:hover .ly-ico{transform:translateX(4px)}
.l-top:hover{border-color:var(--blue);border-style:solid;transform:translateY(-3px)}
.l-top:hover .ly-ico{transform:translateY(-2px)}
.l-base:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(14,34,96,.28)}
.l-top .ly-ico,.l-base .ly-ico{transition:transform .3s var(--ease)}
.l-base{color:#fff;background:var(--ink)}
.l-base .ly-tag{background:rgba(118,185,0,.2);color:#A9D63B}
.l-base small{color:rgba(255,255,255,.66)}
.l-base .ly-ico{color:#A9D63B}
.stack-fuel{display:flex;align-items:center;gap:10px;margin-top:8px;padding:14px 18px;border-radius:8px;background:#F4F7FE;font-size:13.5px;font-weight:600;color:var(--ink-2)}
.stack-fuel .ico{width:18px;height:18px;color:var(--blue)}

/* ---------- 非对称 Bento ---------- */
.bento-v2{grid-template-columns:1.2fr 1fr;grid-template-areas:"d a" "d e";gap:16px}
.bento-v2 .t-d{min-height:440px;padding:44px;justify-content:flex-end;isolation:isolate}
.bento-v2 .t-d::before{content:"";position:absolute;z-index:-1;right:-160px;top:-160px;width:480px;height:480px;border-radius:50%;
  background:repeating-radial-gradient(circle,rgba(255,255,255,.07) 0 1px,transparent 1px 40px)}
.bento-v2 .t-d .money{font-size:112px}
.bento-v2 .t-a{min-height:0;justify-content:flex-start;padding:32px}
.t-a .d-cap{font-size:13px;font-weight:800;letter-spacing:2px;color:rgba(255,255,255,.7);margin-bottom:12px;position:relative}
.bento-v2 .t-a .mega{font-size:72px;letter-spacing:-2px}
.bento-v2 .t-a p{margin-top:16px;position:relative}
.bento-v2 .t-e{flex-direction:row;align-items:flex-start;gap:20px}
.bento-v2 .t-e .ico-wrap{margin-bottom:0}

@media (prefers-reduced-motion: reduce){
  .hero-clock,.hero-slogan,.hero-buddy,.ph-cta{animation:none!important;opacity:1!important;transform:none!important}
}
@media (max-width:1024px){
  .beats{grid-template-columns:1fr;gap:40px}
  .beat-2{margin-top:0;margin-left:48px}
  .tickets{grid-template-columns:1fr 1fr}
  .stack-grid{grid-template-columns:1fr;gap:40px}
  .bento-v2{grid-template-columns:1fr 1fr;grid-template-areas:"d d" "a e"}
  .bento-v2 .t-d{min-height:340px}
  .bento-v2 .t-d .money{font-size:88px}
}
@media (max-width:767px){
  .hero-clock{padding:16px 16px 14px}
  .hc-nums{gap:6px}
  .hc-nums > div{min-width:0;flex:1}
  .hc-nums b{font-size:34px}
  .hc-nums > i{font-size:24px}
  .hc-steps li b{font-size:12px}
  .hc-steps li span{font-size:10.5px}
  .beat-2{margin-left:20px}
  .beat-txt{font-size:20px}
  .beat-2 .beat-txt{font-size:22px}
  .tickets{--cut:92px;gap:12px;margin-top:48px}
  .tk-top{padding:16px 16px 0}
  .tk-num{font-size:32px;padding-bottom:14px}
  .tk-num small.unit{font-size:13px}
  .tk-bot{margin:0 10px;padding:12px 6px 16px}
  .tk-bot b{font-size:13.5px}
  .tk-bot span{font-size:12px}
  .ticket::after{display:none}
  .sc-lead{font-size:18px}
  .l-top{margin:0 24px}.l-mid{margin:0 12px}
  .layer{gap:14px;padding:18px 16px}
  .layer b{font-size:16px}
  .ly-tag{width:64px;letter-spacing:1px;padding:4px 6px}
  .bento-v2{grid-template-columns:1fr;grid-template-areas:"d" "a" "e"}
  .bento-v2 .t-d{padding:32px 24px;min-height:320px}
  .bento-v2 .t-d .money{font-size:64px}
  .bento-v2 .t-a .mega{font-size:64px}
  .bento-v2 .t-e{flex-direction:column}
}

/* ---------- 合作伙伴页：合作场景节目单 ---------- */
.scenes{list-style:none;margin-top:44px;border-top:2px solid var(--ink)}
.scene{display:grid;grid-template-columns:72px 1.1fr 112px 1.6fr;gap:24px;align-items:center;padding:24px 8px;border-bottom:1px solid var(--line);transition:background .3s}
.scene:hover{background:#F7F9FF}
.sc-no{font-family:var(--num);font-size:32px;font-weight:700;line-height:1;color:#C9D7EF;letter-spacing:-1px}
.sc-name b{display:block;font-size:19px;font-weight:800;line-height:1.35}
.sc-name small{display:block;margin-top:2px;font-size:13px;color:var(--ink-3)}
.sc-role{justify-self:start;font-size:12.5px;font-weight:800;letter-spacing:2px;padding:5px 12px;border-radius:4px;background:var(--blue-light);color:var(--blue);white-space:nowrap}
.scene p{font-size:15px;color:var(--ink-2)}
.scene.hl{background:var(--ink);border-bottom-color:var(--ink);border-radius:0 0 12px 12px;margin:0 -12px;padding-left:20px;padding-right:20px}
.scene.hl .sc-no{color:#7DF2C6}
.scene.hl .sc-name b{color:#fff}
.scene.hl .sc-role{background:rgba(125,242,198,.16);color:#7DF2C6}
.scene.hl p{color:rgba(255,255,255,.75)}
@media (max-width:767px){
  .scene{grid-template-columns:44px 1fr;gap:6px 14px;padding:20px 4px}
  .sc-no{font-size:24px;grid-row:span 3;align-self:start}
  .sc-role{grid-column:2}
  .scene p{grid-column:2;font-size:14px}
  .scene.hl{margin:0 -10px;padding:20px 14px}
}

/* 平台栈：三层均可点击（作品提交 / 产品页 / BioNeMo 官网） */
.sc-links{display:flex;flex-direction:column;align-items:flex-start;gap:14px;margin-top:28px;padding-top:24px;border-top:1px dashed #CBD7EE}
.l-top .ly-ico,.l-base .ly-ico{transition:transform .3s var(--ease)}
.l-top:hover{border-color:var(--blue);border-style:solid;transform:translateY(-3px)}
.l-top:hover .ly-ico{transform:translateY(-2px)}
.l-base:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(14,34,96,.28)}
.l-base:hover .ly-ico{transform:translateX(3px)}

/* 平台栈：三层均可点击（作品提交 / 产品页 / BioNeMo 官网） */
.sc-links{display:flex;flex-direction:column;align-items:flex-start;gap:14px;margin-top:28px;padding-top:24px;border-top:1px dashed #CBD7EE}
.l-top .ly-ico,.l-base .ly-ico{transition:transform .3s var(--ease)}
.l-top:hover{border-color:var(--blue);border-style:solid;transform:translateY(-3px)}
.l-top:hover .ly-ico{transform:translateY(-2px)}
.l-base:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(14,34,96,.28)}
.l-base:hover .ly-ico{transform:translateX(3px)}

/* 奖项页：领取说明居中 */
.awards-note.center{justify-content:center;text-align:center;line-height:1.8}
.awards-note.center::before{display:none}

/* 首页三步加入：编号代替图标 */
.role .r-no{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.5px}

/* 首页 Hero 胶囊「10.16 招募开启」→ 报名登记页 */
.hero-pill .pill-go{display:inline-flex;color:inherit}
.hero-pill .pill-go b{display:inline-flex;align-items:center;gap:6px;transition:box-shadow .25s,transform .25s}
.hero-pill .pill-go .ico{width:14px;height:14px;transition:transform .25s}
.hero-pill .pill-go:hover b{box-shadow:0 6px 16px rgba(0,0,0,.18);transform:translateY(-1px)}
.hero-pill .pill-go:hover .ico{transform:translateX(3px)}

/* 平台栈：BioBuddy Enterprise 层使用产品 Logo */
.layer .ly-logo{line-height:0;margin:0}
.layer .ly-logo img{height:68px;width:auto;max-width:100%;display:block}
.l-mid{gap:16px;padding-top:20px;padding-bottom:20px}
.l-mid small{margin-top:8px;padding-left:2px}
@media(max-width:720px){
  .layer .ly-logo img{height:50px}
  .l-mid{gap:12px}
  .l-mid small{margin-top:6px;font-size:12px}
}

/* 页头 / 页脚：BioBuddy Enterprise Logo */
.brand img.bb-logo{height:40px;margin:0 -2px 0 -4px}
.brand-home .brand-name{font-size:16px}
.cf-brands{display:flex;align-items:center;gap:18px;margin-bottom:22px}
.cf-brands .cf-logo{margin-bottom:0}
.cf-brands .cf-bb{height:46px}
.cf-div{width:1px;height:26px;background:rgba(255,255,255,.35)}
@media(max-width:720px){
  .brand img.bb-logo{height:28px}
  .brand-home .brand-name{font-size:13px}
  .cf-brands{gap:12px}
  .cf-brands .cf-bb{height:36px}
}

/* 晋级说明强提醒 */
.rule-alert{display:flex;align-items:center;gap:16px;max-width:880px;margin:36px auto 0;padding:18px 24px;border:1px solid #B9D5FF;border-left:4px solid var(--blue);border-radius:12px;background:var(--blue-light);box-shadow:0 6px 20px rgba(0,110,255,.08)}
.rule-alert .ra-ico{flex:0 0 44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center}
.rule-alert .ra-ico .ico{width:24px;height:24px;stroke-width:1.8}
.rule-alert p{margin:0;font-size:16.5px;line-height:1.7;color:var(--ink);font-weight:500}
.rule-alert .ra-tag{display:inline-block;margin-right:10px;padding:2px 10px;border-radius:6px;background:var(--blue);color:#fff;font-size:13.5px;font-weight:700;letter-spacing:1px;vertical-align:2px}
.rule-alert em{font-style:normal;font-weight:700;color:var(--blue-deep)}
.form-card .rule-alert,.rule-alert.in-form{margin:0 0 26px;max-width:none;padding:14px 18px}
@media (max-width:640px){.rule-alert{align-items:flex-start;gap:12px;padding:14px 16px}.rule-alert .ra-ico{flex-basis:36px;height:36px}.rule-alert .ra-ico .ico{width:20px;height:20px}.rule-alert p{font-size:15px}}
.rule-alert em{white-space:nowrap}
.rule-alert em{white-space:nowrap}

/* =====================================================
   衬线体标题（人文感）：Latin 用 Source Serif 4，中文用 Noto Serif SC（思源宋体）
   字体由各页 <head> 从 fonts.googleapis.cn 加载；加载前/失败时回退到系统宋体
   ===================================================== */
:root{--serif:"Source Serif 4","Noto Serif SC","Source Han Serif SC","Songti SC","STSong",Georgia,serif}
.h2,.hero h1,.hero h1 .l1,.hero-slogan,.page-hero h1,.final-box h2,.vault h2,.next-page b,.cp-title,.city-tab .cn,
.beat-txt,.tile h3,.role h3,.ex h3,.ex-big.txt,.step h3,.jp-body h3,.node .t,.layer b,.success h2,.closed h2,.sc-lead{font-family:var(--serif)}
.h2{font-weight:700;letter-spacing:0;line-height:1.25}
.hero h1{letter-spacing:-.5px}
.hero h1 .l1{font-weight:900;letter-spacing:-1px}
.hero h1 .l2{font-weight:900}
.hero-slogan{font-weight:700}
.page-hero h1{font-weight:900;letter-spacing:0}
.final-box h2,.vault h2,.next-page b,.cp-title{font-weight:900;letter-spacing:0}
.tile h3,.role h3,.ex h3,.step h3,.jp-body h3,.city-tab .cn,.layer b,.ex-big.txt,.success h2,.closed h2{font-weight:700}
.node .t{font-weight:700}
.beat-txt{font-weight:600;letter-spacing:0}
.beat-2 .beat-txt{font-weight:700}
.sc-lead{font-weight:600}

/* ---------- 语言切换 中 / EN ---------- */
.lang-sw{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 13px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:13px;font-weight:700;letter-spacing:.5px;color:var(--ink-3);transition:border-color .2s,color .2s,background .2s;white-space:nowrap}
.lang-sw span.on{color:var(--blue)}
.lang-sw i{width:1px;height:12px;background:currentColor;opacity:.35}
.lang-sw:hover{border-color:var(--blue);color:var(--ink-2)}
nav:not(.solid):not(.open) .lang-sw{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.35);color:rgba(255,255,255,.62)}
nav:not(.solid):not(.open) .lang-sw span.on{color:#fff}
nav:not(.solid):not(.open) .lang-sw:hover{border-color:#fff;color:rgba(255,255,255,.9)}

/* ---------- 英文版专属 ---------- */
html[lang="en"] .brand-logo.en img{height:30px}
html[lang="en"] .cf-logo.cf-th-en{height:40px}
html[lang="en"] .hero-pill .pill-logo img{height:26px}
html[lang="en"] .hero h1 .accent,html[lang="en"] .page-hero h1 .accent{font-style:italic;padding-right:.06em}
html[lang="en"] .hero-slogan{letter-spacing:.2px;font-style:italic;font-weight:600}
html[lang="en"] .h2{letter-spacing:-.3px}
html[lang="en"] .page-hero h1{letter-spacing:-.8px}
html[lang="en"] .beat-txt{letter-spacing:-.1px}
html[lang="en"] .eyebrow{letter-spacing:2.5px}
html[lang="en"] .rule-alert em{white-space:normal}
@media (max-width:767px){
  html[lang="en"] .brand-logo.en img{height:24px}
  html[lang="en"] .hero-slogan{font-size:19px;letter-spacing:0}
  .lang-sw{height:32px;padding:0 10px;font-size:12px;gap:6px}
}

/* Hero 品牌名：按词换行，不在单词中间断开 */
.hero h1 .l1{font-size:clamp(40px,4.3vw,62px)}
.hero h1 .l1 span.w{display:inline-block;white-space:nowrap;opacity:1;transform:none;animation:none}
@media (max-width:767px){.hero h1 .l1{font-size:40px}}

/* 手机端页头：加入语言切换后收紧间距，窄屏隐藏「黑客松 / Hackathon」字样 */
.hero-pill .pill-go b{white-space:nowrap}
@media (max-width:520px){
  .brand,.brand-logo,.brand-home{gap:8px}
  .brand-home .brand-name{display:none}
  .nav-right{gap:8px}
  html[lang="en"] .brand-logo.en img{height:22px}
  html[lang="en"] .hero-pill{gap:8px;padding-left:12px;font-size:12.5px}
  html[lang="en"] .hero-pill .pill-logo img{height:20px}
}

/* Explore 卡片底部对齐：大字与箭头同一行、说明文字独占整行；数字/文字两种大字统一高度与底线 */
.ex-foot{display:grid;grid-template-columns:1fr auto;column-gap:12px;align-items:end}
.ex-foot>div{display:contents}
.ex-foot .ex-big{grid-column:1;grid-row:1;height:46px;display:flex;align-items:flex-end;white-space:nowrap}
.ex-foot .go{grid-column:2;grid-row:1}
.ex-foot .ex-cap{grid-column:1/-1;grid-row:2;margin-top:10px;line-height:1.5}
.ex-big.txt{font-size:30px;line-height:1;padding-bottom:3px}
html[lang="en"] .ex-big.txt{font-size:22px;letter-spacing:-.2px;padding-bottom:4px}
html[lang="en"] .ex-foot .ex-cap{min-height:3em}

/* 衬线标题统一行高，避免继承正文行高导致两行标题间距过大 */
.tile h3,.role h3,.ex h3,.step h3,.jp-body h3,.layer b,.cp-title,.node .t{line-height:1.35}
/* 避免段尾只剩一两个字（孤字）、标题两行长短悬殊 */
p,.lead,.ex-cap{text-wrap:pretty}
.h2,h1,h2,h3{text-wrap:balance}
/* 中文长句加宽，避免末行只剩一两个字 */
.final-box p{max-width:40em}
.page-hero .lead{max-width:44em}
.cf-contact{max-width:640px}
/* 中文衬线标题：仅把逗号收为半角（site.js 包裹 span.halt），避免逗号后留一整格空白；问号等保持全角 */
.halt{font-feature-settings:"halt"}

/* 中等宽度（1025–1279px）：页头加入语言切换后空间变紧，收紧导航间距，链接不换行 */
.nav-links a{white-space:nowrap}
@media (min-width:1025px) and (max-width:1279px){
  .nav-inner{gap:16px}
  .nav-links{gap:18px;font-size:14px}
  .brand-home .brand-name{display:none}
  .nav-right{gap:10px}
}

/* 平台栈层级标签：英文词更长（YOUR WORK / PLATFORM），按内容自适应宽度，三层保持同宽 */
.ly-tag{box-sizing:border-box;white-space:nowrap}
html[lang="en"] .ly-tag{width:112px;letter-spacing:1.2px;padding:5px 8px}
@media (max-width:767px){html[lang="en"] .ly-tag{width:84px;font-size:10.5px;letter-spacing:.6px;padding:4px 4px}}

/* 页脚：联系邮箱 + 公众号说明 */
.cf-mails{display:flex;flex-wrap:wrap;gap:8px 12px;margin-top:12px}
.cf-mails a{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);color:#fff;font-size:14px;font-weight:600;transition:background .2s,border-color .2s}
.cf-mails a:hover{background:rgba(255,255,255,.2);border-color:#fff}
.cf-mails .ico{width:16px;height:16px;stroke-width:1.6;flex-shrink:0}
.qr{text-align:left}
.qr .qr-box{margin:0 0 10px}
.qr span{display:block;line-height:1.55;white-space:nowrap}

/* 页脚品牌行：腾讯云 / CodeBuddy / WorkBuddy / BioBuddy */
.cf-family{display:flex;align-items:center;flex-wrap:wrap;gap:16px 28px;padding-bottom:28px;margin-bottom:32px;border-bottom:1px solid rgba(255,255,255,.2)}
.cf-family a{display:block;line-height:0;opacity:.95;transition:opacity .2s}
.cf-family a:hover{opacity:1}
.cf-family img{display:block;width:auto}
.cf-family .fam-tc{height:28px}
html[lang="en"] .cf-family .fam-tc{height:26px}
.cf-family .fam-buddy{height:40px}
.cf-family .fam-bb{height:44px;margin:0 -2px 0 -4px}
.cf-family .cf-div{height:24px}
@media (max-width:720px){
  .cf-family{display:grid;grid-template-columns:1fr 1fr;align-items:stretch;gap:0;padding-bottom:20px}
  .cf-family .cf-div{display:none}
  .cf-family a{display:flex;align-items:center;justify-content:center;height:64px;padding:0 8px;opacity:1}
  .cf-family a:nth-of-type(odd){border-right:1px solid rgba(255,255,255,.2)}
  .cf-family a:nth-of-type(-n+2){border-bottom:1px solid rgba(255,255,255,.2)}
  .cf-family img{max-width:100%;margin:0}
  .cf-family .fam-tc{height:28px}
  html[lang="en"] .cf-family .fam-tc{height:22px}
  .cf-family .fam-buddy{height:38px}
  .cf-family .fam-bb{height:38px;margin:0}
}

/* 赛制说明 */
.rules-list{list-style:none;margin:40px auto 0;padding:0;max-width:920px;display:grid;grid-template-columns:1fr 1fr;gap:16px;counter-reset:none}
.rules-list li{display:flex;align-items:center;gap:16px;padding:22px 24px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:border-color .2s,box-shadow .2s}
.rules-list li:hover{border-color:#B9D5FF;box-shadow:0 6px 20px rgba(0,110,255,.08)}
.rules-list .rl-n{flex:0 0 34px;height:34px;border-radius:50%;background:var(--blue-light);color:var(--blue);font-weight:700;font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.rules-list p{margin:0;font-size:16px;line-height:1.7;color:var(--ink-2);text-align:left}
.rules-list b{color:var(--ink);font-weight:600}
.rules-box{margin:0 0 24px;padding:18px 20px 20px;border:1px solid var(--line);border-radius:12px;background:var(--bg-soft)}
.rules-box .rl-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:12px}
.rules-list.compact{margin:0;max-width:none;gap:8px;grid-template-columns:1fr}
.rules-list.compact li{padding:12px 14px;gap:12px;border-radius:10px}
.rules-list.compact .rl-n{flex-basis:26px;height:26px;font-size:13.5px}
.rules-list.compact p{font-size:14.5px;line-height:1.65}
@media (max-width:720px){
  .rules-list{grid-template-columns:1fr;gap:12px;margin-top:28px}
  .rules-list li{padding:16px 18px;gap:14px}
  .rules-list p{font-size:15px}
  .rules-list.compact{margin:0}
}

/* 快速上手文档 */
.qs-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:920px;margin:40px auto 0}
.qs-card{display:flex;flex-direction:column;align-items:flex-start;padding:28px 28px 22px;border:1px solid var(--line);border-radius:16px;background:#fff;color:inherit;text-decoration:none;transition:border-color .2s,box-shadow .2s,transform .2s}
.qs-card:hover{border-color:#B9D5FF;box-shadow:0 10px 28px rgba(0,110,255,.1);transform:translateY(-2px)}
.qs-logo{height:44px;display:flex;align-items:center;margin-bottom:16px}
.qs-logo img{height:44px;width:auto;display:block}
.qs-tag{display:inline-block;padding:3px 10px;border-radius:999px;background:var(--blue-light);color:var(--blue-deep);font-size:12.5px;font-weight:600;margin-bottom:12px}
.qs-card p{margin:0 0 20px;font-size:15px;line-height:1.75;color:var(--ink-2);text-align:left;flex:1}
.qs-go{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--blue)}
.qs-go .ico{width:18px;height:18px;transition:transform .2s}
.qs-card:hover .qs-go .ico{transform:translateX(3px)}
.qs-url{margin-top:6px;font-size:12px;color:var(--ink-3);word-break:break-all}
.qs-mini{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 20px;margin:24px auto 0;font-size:14px}
.qs-mini span{color:var(--ink-3);font-weight:600}
.qs-mini a{display:inline-flex;align-items:center;gap:4px;color:var(--blue);font-weight:600}
.qs-mini a .ico{width:15px;height:15px}
.qs-mini a:hover{color:var(--blue-deep)}
.rules-box .qs-mini{justify-content:flex-start;margin:12px 0 0;font-size:13.5px}
@media (max-width:720px){
  .qs-grid{grid-template-columns:1fr;gap:14px;margin-top:28px}
  .qs-card{padding:22px 20px 18px}
  .qs-logo,.qs-logo img{height:38px}
}
.qs-grid.qs-3{grid-template-columns:repeat(3,1fr);max-width:1060px}
.qs-logo img.qs-wordmark{height:24px}
@media (max-width:1024px){.qs-grid.qs-3{grid-template-columns:1fr 1fr}}
@media (max-width:720px){.qs-grid.qs-3{grid-template-columns:1fr}.qs-logo img.qs-wordmark{height:21px}}
.token-row.cols-2{grid-template-columns:repeat(2,1fr);max-width:760px;margin-left:auto;margin-right:auto}
@media (max-width:767px){.token-row.cols-2{grid-template-columns:1fr}}

/* KV 正式图 */
.kv.kv-img{margin:0;aspect-ratio:16/9;border:none;padding:0;overflow:hidden;background:#040B25;backdrop-filter:none;
  border-radius:var(--r);box-shadow:0 30px 80px rgba(0,10,40,.45),0 0 0 1px rgba(255,255,255,.14)}
.kv.kv-img::before,.kv.kv-img::after{display:none}
.kv.kv-img img{display:block;width:100%;height:100%;object-fit:cover}
@media (min-width:1025px){
  .hero-grid:has(.kv-img){grid-template-columns:minmax(0,500px) minmax(0,1fr);gap:40px}
  /* KV 向右出血：左侧文字仍与导航对齐，右侧突破版心，最多外扩 260px */
  .hero-grid .kv.kv-img{margin-right:clamp(-260px, calc((1176px - 100vw) / 2 + 28px), 0px)}
  .hero-grid:has(.kv-img) h1 .l1{font-size:clamp(40px,3.9vw,56px)}
  .hero-grid:has(.kv-img) h1 .l1{font-size:clamp(40px,3.9vw,56px)}
}

/* 页脚品牌行：腾讯云黑客松 */
.cf-family .fam-tch{height:21px}
@media (max-width:720px){
  .cf-family .fam-tch{height:17px}
  .cf-family a:nth-of-type(-n+2){border-bottom:none}
  .cf-family a:nth-of-type(-n+4){border-bottom:1px solid rgba(255,255,255,.2)}
  .cf-family a:last-of-type{grid-column:1 / -1;border-right:none}
}