/* ============================================================
   2027年 知识产权 × AI 技能大赛官网 · 暗黑科技风设计系统
   ============================================================ */
:root{
  --bg:#070d1a;            /* 深空底 */
  --bg-2:#0b1424;          /* 分区底 */
  --bg-3:#0f1b30;          /* 卡片区底 */
  --card:rgba(148,196,220,.05);
  --card-hover:rgba(45,212,191,.08);
  --line:rgba(148,196,220,.14);
  --line-strong:rgba(45,212,191,.35);
  --teal:#2dd4bf;
  --teal-deep:#0d9488;
  --gold:#fbbf24;
  --gold-deep:#f59e0b;
  --txt:#e8f0f6;
  --txt-2:#9fb2c4;
  --txt-3:#6b7f94;
  --glow:0 0 42px rgba(45,212,191,.22);
  --radius:16px;
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);color:var(--txt);
  line-height:1.75;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(7,13,26,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-head .bar{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo .mark,.auth-logo .mark{
  width:auto;height:46px;flex-shrink:0;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(45,212,191,.55),rgba(16,150,132,.40));
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.45);
  box-shadow:0 0 18px rgba(45,212,191,.35),inset 0 1px 0 rgba(255,255,255,.45);
  object-fit:contain;
}
.logo .name{font-size:15px;font-weight:700;line-height:1.3}
.logo .name em{font-style:normal;color:var(--teal)}
.logo .name small{display:block;font-size:10.5px;font-weight:400;color:var(--txt-3);letter-spacing:1px}
nav.main{display:flex;gap:4px;margin-left:auto}
nav.main a{
  padding:8px 14px;border-radius:8px;font-size:14.5px;color:var(--txt-2);
  transition:.2s;position:relative;
}
nav.main a:hover{color:var(--txt);background:rgba(148,196,220,.06)}
nav.main a.on{color:var(--teal)}
nav.main a.on::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--teal),transparent);border-radius:2px;
}
.btn-cta{
  flex-shrink:0;padding:9px 20px;border-radius:10px;font-size:14.5px;font-weight:600;
  color:#06251f;background:linear-gradient(135deg,#2dd4bf,#0d9488);
  box-shadow:0 0 22px rgba(45,212,191,.35);transition:.2s;
}
.btn-cta:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(45,212,191,.5)}
.burger{display:none;margin-left:auto;background:none;border:none;cursor:pointer;padding:8px}
.burger span{display:block;width:22px;height:2px;background:var(--txt);margin:5px 0;border-radius:2px;transition:.25s}

/* ---------- Hero ---------- */
.hero{position:relative;padding:170px 0 110px;overflow:hidden}
.hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(45,212,191,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(45,212,191,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 35%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 35%,#000 30%,transparent 75%);
}
.glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none}
.glow.t{width:560px;height:560px;background:rgba(13,148,136,.28);top:-180px;left:-120px}
.glow.g{width:460px;height:460px;background:rgba(245,158,11,.12);bottom:-200px;right:-100px}
.hero .wrap{position:relative;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 20px;border-radius:100px;font-size:13.5px;letter-spacing:2px;
  color:var(--teal);border:1px solid var(--line-strong);
  background:rgba(45,212,191,.07);
  box-shadow:inset 0 0 20px rgba(45,212,191,.08);
}
.hero h1{
  margin:26px 0 0;font-size:52px;font-weight:800;letter-spacing:2px;line-height:1.25;
  color:#fff;
}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#2dd4bf,#5eead4);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{
  margin:22px auto 0;max-width:640px;font-size:20px;font-weight:600;letter-spacing:1px;
  background:linear-gradient(90deg,#fbbf24,#fde68a);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .desc{margin:18px auto 0;max-width:600px;font-size:15.5px;color:var(--txt-2)}
.hero .facts{margin-top:34px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.fact{
  padding:10px 22px;border-radius:12px;font-size:13.5px;color:var(--txt-2);
  border:1px solid var(--line);background:var(--card);
}
.fact b{color:var(--txt);font-weight:600;margin-right:6px}
.hero .acts{margin-top:40px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 34px;border-radius:12px;font-size:15.5px;font-weight:600;transition:.2s}
.btn.main{color:#06251f;background:linear-gradient(135deg,#2dd4bf,#0d9488);box-shadow:var(--glow)}
.btn.main:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(45,212,191,.45)}
.btn.ghost{color:var(--teal);border:1px solid var(--line-strong);background:rgba(45,212,191,.05)}
.btn.ghost:hover{background:rgba(45,212,191,.12)}

/* 子页页头 */
.page-hero{position:relative;padding:150px 0 64px;overflow:hidden;text-align:center}
.page-hero h1{font-size:40px;font-weight:800;letter-spacing:2px;color:#fff}
.page-hero h1 em{font-style:normal;color:var(--teal)}
.page-hero .crumb{margin-bottom:14px;font-size:13px;color:var(--txt-3);letter-spacing:1px}
.page-hero .crumb b{color:var(--teal);font-weight:500}
.page-hero .sub{margin:14px auto 0;max-width:640px;color:var(--txt-2);font-size:15.5px}

/* ---------- 区块 ---------- */
section.sec{padding:84px 0;position:relative}
section.sec.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head .kicker{font-size:13px;letter-spacing:3px;color:var(--teal);text-transform:uppercase}
.sec-head h2{margin-top:10px;font-size:32px;font-weight:800;letter-spacing:1px;color:#fff}
.sec-head h2 em{font-style:normal;color:var(--teal)}
.sec-head p{margin:14px auto 0;max-width:660px;color:var(--txt-2);font-size:15.5px}

/* 卡片 */
.cards{display:grid;gap:20px}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c4{grid-template-columns:repeat(4,1fr)}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.card{
  padding:30px 26px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--card);
  transition:.25s;position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--teal),transparent);
  opacity:0;transition:.25s;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--card-hover)}
.card:hover::before{opacity:1}
.card .ico{
  width:48px;height:48px;border-radius:12px;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;font-size:22px;
  background:rgba(45,212,191,.1);border:1px solid var(--line-strong);
  box-shadow:inset 0 0 16px rgba(45,212,191,.12);
}
.card .ico.gold{background:rgba(245,158,11,.1);border-color:rgba(245,158,11,.4);box-shadow:inset 0 0 16px rgba(245,158,11,.12)}
.card h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:10px}
.card h3 .tag{font-size:11.5px;font-weight:500;color:var(--teal);border:1px solid var(--line-strong);border-radius:100px;padding:2px 10px;margin-left:8px;vertical-align:2px}
.card h3 .tag.gold{color:var(--gold);border-color:rgba(245,158,11,.4)}
.card p{font-size:14px;color:var(--txt-2)}
.card p{text-wrap:pretty;line-break:strict;word-break:normal}
.card p b{color:var(--txt);font-weight:600}
.card .hl{color:var(--teal)}
.card .hl.gold{color:var(--gold)}
.card .org-logo{
  display:block;height:52px;width:auto;margin:0 0 18px;
  padding:9px 14px;background:#fff;border-radius:12px;
  border:1px solid var(--line-strong);
  box-shadow:0 0 22px rgba(45,212,191,.16);
  object-fit:contain;
}

/* 主题公式 */
.formula{
  max-width:820px;margin:0 auto;padding:48px 40px;text-align:center;border-radius:20px;
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(13,148,136,.14),rgba(11,20,36,.6) 55%);
  box-shadow:var(--glow);position:relative;overflow:hidden;
}
.formula::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(45,212,191,.14) 1px,transparent 1px);
  background-size:26px 26px;
  mask-image:radial-gradient(ellipse at center,#000 20%,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse at center,#000 20%,transparent 70%);
  pointer-events:none;
}
.formula .big{font-size:30px;font-weight:800;letter-spacing:1px;color:#fff;line-height:1.5}
.formula .big em{font-style:normal;color:var(--teal)}
.formula .fml{
  margin-top:18px;font-size:16.5px;font-weight:600;letter-spacing:2px;color:var(--gold);
}
.formula .fml i{font-style:normal;color:var(--txt-3);margin:0 14px}
.formula p{margin-top:16px;color:var(--txt-2);font-size:14.5px;position:relative}

/* 数字/百分比评分 */
.dims{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.dim{
  padding:26px 22px;border-radius:var(--radius);text-align:center;
  border:1px solid var(--line);background:var(--card);transition:.25s;
}
.dim:hover{border-color:var(--line-strong);background:var(--card-hover)}
.dim .pct{
  font-size:34px;font-weight:800;
  background:linear-gradient(90deg,#2dd4bf,#5eead4);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.dim h5{margin:6px 0 8px;font-size:16px;color:#fff;font-weight:700}
.dim p{font-size:12.5px;color:var(--txt-2)}
.bar{height:5px;border-radius:4px;background:rgba(148,196,220,.12);margin-top:16px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,#0d9488,#2dd4bf);box-shadow:0 0 10px rgba(45,212,191,.5)}

/* 时间轴 */
.tl{position:relative;max-width:860px;margin:0 auto;padding:10px 0}
.tl::before{
  content:"";position:absolute;left:26px;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--teal),rgba(45,212,191,.08));
}
.tl-item{position:relative;padding:0 0 44px 76px}
.tl-item:last-child{padding-bottom:0}
.tl-item .dot{
  position:absolute;left:15px;top:4px;width:24px;height:24px;border-radius:50%;
  background:var(--bg);border:2px solid var(--teal);
  box-shadow:0 0 16px rgba(45,212,191,.5);
}
.tl-item .dot.gold{border-color:var(--gold);box-shadow:0 0 16px rgba(245,158,11,.5)}
.tl-item .ph{font-size:13px;letter-spacing:2px;color:var(--teal);font-weight:600}
.tl-item .ph.gold{color:var(--gold)}
.tl-item h3{margin:6px 0 4px;font-size:21px;font-weight:700;color:#fff}
.tl-item .dt{font-size:14px;color:var(--gold);font-weight:600;margin-bottom:10px}
.tl-item p{font-size:14.5px;color:var(--txt-2);max-width:640px}
.tl-item .box{text-wrap:pretty;
  margin-top:14px;padding:16px 20px;border-radius:12px;font-size:14px;color:var(--txt-2);
  border:1px solid var(--line);background:var(--card);
}
.tl-item .box b{color:var(--teal)}

/* 表格 */
table.aw-tb{width:100%;border-collapse:collapse;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
table.aw-tb th{
  padding:16px 20px;text-align:left;font-size:14px;letter-spacing:1px;color:var(--teal);
  background:rgba(13,148,136,.14);border-bottom:1px solid var(--line-strong);font-weight:600;
}
table.aw-tb td{padding:18px 20px;font-size:14.5px;color:var(--txt-2);border-bottom:1px solid var(--line);background:rgba(148,196,220,.02)}
table.aw-tb tr:last-child td{border-bottom:none}
table.aw-tb td.aw{color:#fff;font-weight:700;white-space:nowrap}
table.aw-tb td.aw .special{font-size:11px;color:var(--gold);border:1px solid rgba(245,158,11,.4);border-radius:100px;padding:1px 8px;margin-left:8px;vertical-align:2px;font-weight:500}
.note{
  margin-top:18px;padding:14px 20px;border-radius:12px;font-size:13.5px;color:var(--txt-2);
  border:1px dashed var(--line);background:rgba(148,196,220,.03);
}
.note b{color:var(--gold)}

/* 二维码 */
.qr-row{display:flex;justify-content:center;gap:28px;flex-wrap:wrap}
.qr-item{
  width:230px;padding:24px 20px;border-radius:var(--radius);text-align:center;
  border:1px solid var(--line-strong);background:var(--card);transition:.25s;
}
.qr-item:hover{transform:translateY(-4px);box-shadow:var(--glow)}
.qr-item img{width:180px;height:180px;margin:0 auto 14px;border-radius:10px;background:#fff;padding:8px}
.qr-item span{font-size:14.5px;font-weight:600;color:var(--txt)}

/* 摘要导流卡（首页） */
.sum-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.sum-card{
  display:flex;align-items:flex-start;gap:18px;padding:28px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--card);transition:.25s;
}
.sum-card:hover{border-color:var(--line-strong);background:var(--card-hover);transform:translateY(-3px)}
.sum-card .n{
  font-size:26px;font-weight:800;line-height:1;flex-shrink:0;width:52px;
  background:linear-gradient(180deg,#2dd4bf,rgba(45,212,191,.25));-webkit-background-clip:text;background-clip:text;color:transparent;
}
.sum-card h3{font-size:17.5px;font-weight:700;color:#fff;margin-bottom:6px}
.sum-card p{font-size:13.5px;color:var(--txt-2)}
.sum-card .go{margin-left:auto;align-self:center;color:var(--teal);font-size:18px;flex-shrink:0;transition:.2s}
.sum-card:hover .go{transform:translateX(4px)}

/* CTA */
.cta{
  position:relative;text-align:center;padding:70px 30px;border-radius:22px;overflow:hidden;
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(13,148,136,.2),rgba(11,20,36,.7) 60%);
  box-shadow:var(--glow);
}
.cta h2{font-size:28px;font-weight:800;color:#fff;letter-spacing:1px}
.cta p{margin:12px auto 0;max-width:520px;color:var(--txt-2);font-size:15px}
.cta .btn{margin-top:26px}

/* 页脚 */
.site-foot{border-top:1px solid var(--line);background:var(--bg-2);padding:60px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:44px}
.foot-grid h4{font-size:14px;letter-spacing:2px;color:#fff;margin-bottom:16px}
.foot-grid p,.foot-grid a{font-size:13.5px;color:var(--txt-2);display:block;margin-bottom:9px;transition:.2s}
.foot-grid a:hover{color:var(--teal)}
.foot-grid .foot-nav{display:grid;grid-template-columns:1fr 1fr;gap:0 22px;margin-top:2px}
.foot-grid .fname{font-size:17px;font-weight:700;color:#fff;margin-bottom:10px}
.foot-grid .fname em{font-style:normal;color:var(--teal)}
.foot-grid .theme-line{font-size:13px;color:var(--gold)}
.foot-bar{border-top:1px solid var(--line);padding:18px 0;text-align:center;font-size:12.5px;color:var(--txt-3)}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.vis{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .cards.c3,.cards.c4,.dims{grid-template-columns:repeat(2,1fr)}
  .sum-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:38px}
  nav.main{display:none;position:fixed;top:64px;left:0;right:0;flex-direction:column;gap:2px;padding:12px 20px 18px;background:rgba(7,13,26,.97);border-bottom:1px solid var(--line)}
  nav.main.open{display:flex}
  nav.main a{padding:12px 14px;font-size:15px}
  .burger{display:block}
  .btn-cta{margin-left:auto;padding:8px 14px;font-size:13.5px}
  .burger{margin-left:0}
}
@media (max-width:600px){
  .cards.c3,.cards.c4,.cards.c2,.dims{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:140px 0 80px}
  .hero h1{font-size:30px;letter-spacing:1px}
  .hero .lead{font-size:17px}
  .page-hero h1{font-size:28px}
  .sec-head h2{font-size:24px}
  .formula{padding:36px 22px}
  .formula .big{font-size:21px}
  .formula .fml i{margin:0 8px}
  section.sec{padding:60px 0}
  .tl-item{padding-left:60px}
  .tl::before{left:16px}
  .tl-item .dot{left:5px}
  .logo .name small{display:none}
}

/* SVG 图标尺寸 */
.ico svg{width:24px;height:24px;display:block}

/* ---------- 报名表单 ---------- */
.form-sec{padding-top:54px}
.mat-card{
  max-width:980px;margin:0 auto 38px;padding:30px 32px;border-radius:var(--radius);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(13,148,136,.12),rgba(11,20,36,.5) 60%);
  box-shadow:var(--glow);position:relative;overflow:hidden;
}
.mat-card::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(45,212,191,.1) 1px,transparent 1px);background-size:22px 22px;mask-image:radial-gradient(ellipse at center,#000 15%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at center,#000 15%,transparent 70%);pointer-events:none}
.mat-card h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:6px;position:relative}
.mat-sub{font-size:14px;color:var(--txt-2);margin-bottom:20px;position:relative}
.mat-cols{display:grid;grid-template-columns:1.35fr 1fr;gap:30px;position:relative}
.mat-h{font-size:14px;font-weight:700;color:var(--teal);margin-bottom:12px;letter-spacing:1px}
.mat-h.req::before{content:"● ";color:var(--gold)}
.mat-list{list-style:none}
.mat-list li{position:relative;padding-left:18px;margin-bottom:14px;font-size:13.5px;color:var(--txt-2);line-height:1.7}
.mat-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--teal)}
.mat-list.opt li::before{background:var(--txt-3)}
.mat-list li b{color:var(--txt);font-weight:600}
.mat-note{margin-top:18px;padding:14px 16px;border-radius:12px;font-size:12.5px;color:var(--txt-2);border:1px dashed var(--line);background:rgba(148,196,220,.03);line-height:1.7}
.mat-note b{color:var(--gold)}

.form-card{max-width:980px;margin:0 auto;padding:38px 36px;border-radius:22px;border:1px solid var(--line);background:var(--card)}
.fset{border:none;border-top:1px solid var(--line);padding:30px 0 8px;margin:0}
.fset:first-of-type{border-top:none;padding-top:0}
.fset legend{font-size:17px;font-weight:700;color:#fff;padding:0;margin-bottom:20px;letter-spacing:.5px}
.fset legend .ln{color:var(--teal);margin-right:8px;font-weight:800}
.row{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.row.c3{grid-template-columns:repeat(3,1fr)}
.field{margin-bottom:20px}
.field label{display:block;font-size:13.5px;color:var(--txt-2);margin-bottom:8px;font-weight:500}
.req{color:var(--gold);margin-left:2px}
.hint{font-size:12.5px;color:var(--txt-3);margin-top:8px;line-height:1.6}
.inp,select.inp,textarea.inp{
  width:100%;padding:12px 14px;border-radius:10px;font-size:14.5px;font-family:inherit;color:var(--txt);
  background:rgba(7,13,26,.6);border:1px solid var(--line);transition:.2s;outline:none;
}
.inp:focus,select.inp:focus,textarea.inp:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(45,212,191,.12);background:rgba(7,13,26,.8)}
textarea.inp{resize:vertical;min-height:96px;line-height:1.7}
select.inp{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--txt-2) 50%),linear-gradient(135deg,var(--txt-2) 50%,transparent 50%);background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;cursor:pointer}
.inp.err,textarea.inp.err,select.inp.err{border-color:#f87171;box-shadow:0 0 0 3px rgba(248,113,113,.14)}

.radio-grid{display:flex;flex-wrap:wrap;gap:12px}
.pill{position:relative;cursor:pointer;display:inline-block}
.pill input{position:absolute;opacity:0;inset:0;cursor:pointer}
.pill span{padding:11px 22px;border-radius:10px;font-size:14.5px;color:var(--txt-2);border:1px solid var(--line);background:rgba(7,13,26,.5);transition:.2s;display:inline-block}
.pill:hover span{border-color:var(--line-strong)}
.pill input:checked + span{color:#06251f;font-weight:600;background:linear-gradient(135deg,#2dd4bf,#0d9488);border-color:var(--teal);box-shadow:0 0 16px rgba(45,212,191,.3)}
.radio-grid.err span{border-color:#f87171}

/* 成员 */
.members{margin-top:6px;border:1px dashed var(--line);border-radius:12px;padding:16px}
.member-row{position:relative;padding:14px 40px 4px 16px;margin-bottom:14px;border-radius:10px;background:rgba(148,196,220,.03);border:1px solid var(--line)}
.member-row .row{gap:14px}
.member-del{position:absolute;top:10px;right:10px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--txt-2);font-size:16px;cursor:pointer;line-height:1}
.member-del:hover{border-color:#f87171;color:#f87171}
.member-add{margin-top:4px;padding:11px 20px;border-radius:10px;border:1px dashed var(--line-strong);background:rgba(45,212,191,.05);color:var(--teal);font-size:14px;cursor:pointer;font-family:inherit;transition:.2s}
.member-add:hover:not(:disabled){background:rgba(45,212,191,.12)}
.member-add:disabled{color:var(--txt-3);cursor:not-allowed;border-color:var(--line)}
.member-count{font-size:12.5px;color:var(--txt-3);margin:10px 0 0}

/* 上传 */
.upload{margin-bottom:22px}
.upload .up-label{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--txt-2);margin-bottom:8px;font-weight:500;flex-wrap:wrap}
.upload-zone{position:relative;border:1.5px dashed var(--line);border-radius:12px;padding:22px;text-align:center;background:rgba(7,13,26,.4);transition:.2s;cursor:pointer}
.upload-zone:hover{border-color:var(--line-strong);background:rgba(45,212,191,.04)}
.upload-zone.drag{border-color:var(--teal);background:rgba(45,212,191,.08)}
.upload-zone.err{border-color:#f87171}
.upload-zone .up-ico{display:flex;justify-content:center;margin-bottom:8px}
.upload-zone .up-ico svg{width:30px;height:30px;stroke:var(--teal);opacity:.7}
.upload-zone .up-tip{font-size:13.5px;color:var(--txt-2)}
.upload-zone .up-tip b{color:var(--teal)}
.upload-zone .up-count{display:block;font-size:12px;color:var(--txt-3);margin-top:6px}
.file-list{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.file-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:9px;background:rgba(45,212,191,.06);border:1px solid var(--line)}
.file-item .fi-name{flex:1;font-size:13px;color:var(--txt);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-item .fi-size{font-size:12px;color:var(--txt-3);flex-shrink:0}
.file-item .fi-del{flex-shrink:0;width:22px;height:22px;border-radius:6px;border:none;background:rgba(248,113,113,.12);color:#f87171;cursor:pointer;font-size:14px;line-height:1}
.file-item .fi-del:hover{background:rgba(248,113,113,.25)}

/* 声明 / 提交 */
.agree{display:flex;align-items:flex-start;gap:10px;margin:8px 0 22px;font-size:13.5px;color:var(--txt-2);cursor:pointer}
.agree.err .agree-txt{color:#fca5a5}
.agree input{margin-top:3px;width:18px;height:18px;accent-color:var(--teal);flex-shrink:0;cursor:pointer}
.submit-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.btn-submit{padding:14px 40px;border-radius:12px;border:none;cursor:pointer;font-size:16px;font-weight:700;font-family:inherit;color:#06251f;background:linear-gradient(135deg,#2dd4bf,#0d9488);box-shadow:var(--glow);transition:.2s}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(45,212,191,.45)}
.btn-submit:active{transform:translateY(0)}
.form-err{display:none;margin-bottom:18px;padding:12px 16px;border-radius:10px;font-size:13.5px;color:#fecaca;background:rgba(248,113,113,.1);border:1px solid rgba(248,113,113,.3);line-height:1.6}
.form-err.show{display:block}

/* 成功页 */
.ok-screen{display:none;max-width:760px;margin:10px auto 0;text-align:center;padding:10px}
.ok-screen.show{display:block}
.ok-badge{width:84px;height:84px;border-radius:50%;margin:0 auto 22px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0d9488,#2dd4bf);box-shadow:0 0 34px rgba(45,212,191,.5)}
.ok-badge svg{width:42px;height:42px;stroke:#06251f}
.ok-screen h2{font-size:28px;font-weight:800;color:#fff;margin-bottom:8px}
.ok-screen .ok-id{display:inline-block;margin:4px 0 12px;padding:8px 20px;border-radius:100px;font-size:16px;font-weight:700;color:var(--teal);border:1px solid var(--line-strong);background:rgba(45,212,191,.07);letter-spacing:1px}
.ok-screen .ok-desc{color:var(--txt-2);font-size:14.5px;margin-bottom:8px;line-height:1.7}
.ok-summary{text-align:left;margin:24px auto 0;max-width:560px;padding:22px 24px;border-radius:14px;border:1px solid var(--line);background:var(--card)}
.ok-summary .ok-row{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.ok-summary .ok-row:last-child{border-bottom:none}
.ok-summary .ok-row .k{color:var(--txt-3);flex-shrink:0}
.ok-summary .ok-row .v{color:var(--txt);text-align:right;font-weight:500}
.ok-summary .ok-line{white-space:pre-wrap;font-size:13px;line-height:1.7;color:var(--txt);font-family:var(--font-mono,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace)}
.ok-acts{margin-top:24px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

@media (max-width:760px){
  .mat-cols{grid-template-columns:1fr;gap:20px}
  .row,.row.c3{grid-template-columns:1fr}
  .form-card{padding:26px 20px}
  .mat-card{padding:24px 20px}
}

/* ---------- 报名截止提示 / 倒计时 ---------- */
/* 参赛要求页：截止时间突出提示 */
.deadline-banner{
  margin-top:26px;display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  padding:20px 26px;border-radius:18px;position:relative;overflow:hidden;
  border:1px solid rgba(245,158,11,.45);
  background:linear-gradient(135deg,rgba(245,158,11,.15),rgba(11,20,36,.55));
  box-shadow:0 0 30px rgba(245,158,11,.18);
}
.deadline-banner::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--gold);
}
.deadline-banner .dl-ico{
  flex-shrink:0;width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(245,158,11,.12);border:1px solid rgba(245,158,11,.4);color:var(--gold);
}
.deadline-banner .dl-ico svg{width:26px;height:26px}
.deadline-banner .dl-txt{flex:1;min-width:190px}
.deadline-banner .dl-k{font-size:13px;letter-spacing:2px;color:var(--gold);font-weight:600}
.deadline-banner .dl-d{font-size:26px;font-weight:800;color:#fff;line-height:1.2;margin-top:3px}
.deadline-banner .dl-d span{color:var(--gold);font-size:17px;margin-left:6px;font-weight:700}
.deadline-banner .dl-note{flex:1.5;min-width:220px;font-size:13.5px;color:var(--txt-2);line-height:1.7}
.deadline-banner .btn{margin-left:auto;flex-shrink:0}

/* 首页：报名倒计时 */
.cd-wrap{margin-top:34px;display:flex;flex-direction:column;align-items:center;gap:14px}
.cd-label{font-size:14px;letter-spacing:1px;color:var(--gold);font-weight:600}
.cd-box{
  display:flex;align-items:center;gap:10px;
  padding:16px 24px;border-radius:16px;
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(245,158,11,.1),rgba(11,20,36,.55));
  box-shadow:0 0 26px rgba(245,158,11,.16);
}
.cd-unit{display:flex;flex-direction:column;align-items:center;min-width:62px}
.cd-num{
  font-size:40px;font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(90deg,#fbbf24,#fde68a);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.cd-cap{font-size:12px;color:var(--txt-2);margin-top:7px;letter-spacing:1px}
.cd-sep{font-size:30px;font-weight:700;color:var(--gold);opacity:.65;align-self:flex-start;margin-top:2px}

@media (max-width:760px){
  .deadline-banner{flex-direction:column;align-items:flex-start;gap:14px;padding:20px}
  .deadline-banner .btn{margin-left:0}
  .deadline-banner .dl-d{font-size:22px}
  .cd-box{padding:12px 14px;gap:6px}
  .cd-num{font-size:28px}
  .cd-unit{min-width:46px}
  .cd-sep{font-size:22px}
}
/* 超小屏：倒计时进一步收紧，避免被卡片裁切 */
@media (max-width:480px){
  .cta{padding:52px 16px}
  .cd-box{padding:10px 12px;gap:4px}
  .cd-num{font-size:23px}
  .cd-unit{min-width:38px}
  .cd-sep{font-size:17px}
}