:root{
  --navy:#15294D; --navy2:#1E3A66; --navy3:#2c4d80;
  --gold:#C8A24B; --gold-d:#a9852f;
  --ink:#1f2733; --gray:#5b6675; --gray2:#8a93a3;
  --line:#e3e8ef; --bg:#f6f8fb; --soft:#eef2f8; --white:#fff;
  --ok:#2e8b57; --radius:12px; --shadow:0 2px 10px rgba(21,41,77,.06);
  --maxw:1080px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;}
a{color:var(--navy2);text-decoration:none;}
a:hover{color:var(--gold-d);}
img{max-width:100%;display:block;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px;}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--navy);font-size:19px;letter-spacing:.5px;}
.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--gold);display:inline-block;}
.nav-links{display:flex;gap:26px;list-style:none;margin:0;padding:0;align-items:center;}
.nav-links a{font-size:15px;color:var(--ink);font-weight:500;position:relative;padding:4px 0;}
.nav-links a:hover{color:var(--gold-d);}
.nav-links a.active{color:var(--navy);font-weight:700;}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--gold);}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px;}
.nav-toggle span{width:24px;height:2px;background:var(--navy);display:block;border-radius:2px;}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:12px 26px;border-radius:30px;font-weight:700;font-size:15px;
  transition:.2s;cursor:pointer;border:0;}
.btn-primary{background:var(--gold);color:#1d1d1d;}
.btn-primary:hover{background:var(--gold-d);color:#fff;}
.btn-ghost{background:transparent;color:var(--navy);border:1.5px solid var(--navy);}
.btn-ghost:hover{background:var(--navy);color:#fff;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;padding:74px 0 64px;}
.hero .tag{display:inline-block;background:rgba(200,162,75,.16);color:var(--gold);
  border:1px solid rgba(200,162,75,.5);padding:5px 14px;border-radius:20px;font-size:13.5px;letter-spacing:1px;margin-bottom:18px;}
.hero h1{font-size:clamp(28px,5vw,46px);margin:0 0 16px;line-height:1.25;letter-spacing:.5px;}
.hero h1 .hl{color:var(--gold);}
.hero p.lead{font-size:18px;color:#d4ddee;max-width:680px;margin:0 0 28px;}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- Sections ---------- */
section{padding:60px 0;}
.section-head{margin-bottom:34px;}
.section-head .eyebrow{color:var(--gold-d);font-weight:700;font-size:14px;letter-spacing:2px;text-transform:uppercase;}
.section-head h2{font-size:30px;color:var(--navy);margin:8px 0 6px;}
.section-head p{color:var(--gray);max-width:720px;margin:0;}
.bg-soft{background:var(--bg);}

/* ---------- Cards / Grid ---------- */
.grid{display:grid;gap:20px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);transition:.2s;}
.card:hover{transform:translateY(-3px);border-color:var(--gold);}
.card .ico{width:46px;height:46px;border-radius:12px;background:var(--soft);color:var(--navy);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;margin-bottom:14px;}
.card h3{margin:0 0 8px;font-size:19px;color:var(--navy);}
.card p{color:var(--gray);font-size:14.5px;margin:0;}

/* IP feature */
.ip-card{border-left:4px solid var(--gold);}
.ip-tag{font-size:12.5px;color:var(--gold-d);font-weight:700;letter-spacing:1px;}

/* ---------- Trust strip ---------- */
.trust{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.trust .item{flex:1;min-width:150px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  border-radius:10px;padding:16px;text-align:center;color:#fff;}
.trust .num{font-size:24px;font-weight:800;color:var(--gold);}
.trust .lbl{font-size:13px;color:#cdd8ea;margin-top:4px;}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center;}
.stats .n{font-size:34px;font-weight:800;color:var(--navy);}
.stats .l{color:var(--gray);font-size:14px;margin-top:4px;}

/* ---------- Article / prose ---------- */
.prose h2{font-size:24px;color:var(--navy);margin:34px 0 12px;border-left:4px solid var(--gold);padding-left:14px;}
.prose h3{font-size:19px;color:var(--navy2);margin:24px 0 8px;}
.prose p{margin:12px 0;color:#2c3540;}
.prose ul,.prose ol{margin:12px 0;padding-left:22px;color:#2c3540;}
.prose li{margin:7px 0;}
.prose blockquote{margin:18px 0;padding:14px 20px;background:var(--soft);border-left:4px solid var(--gold);
  border-radius:0 8px 8px 0;color:var(--navy);font-style:italic;}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line);border-radius:10px;margin-bottom:12px;overflow:hidden;background:#fff;}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:18px 20px;font-size:16.5px;font-weight:600;
  color:var(--navy);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;}
.faq-q .sign{color:var(--gold-d);font-size:22px;flex:none;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 20px;color:var(--gray);}
.faq-a.open{padding:0 20px 18px;max-height:400px;}

/* ---------- Placeholder note ---------- */
.ph-note{background:#fff8ec;border:1px dashed var(--gold-d);border-radius:10px;padding:14px 18px;
  font-size:14px;color:#7a5c14;margin:16px 0;}
.ph-note b{color:var(--gold-d);}

/* ---------- Case grid ---------- */
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);position:relative;cursor:pointer;}
.case-card .top{background:var(--navy);color:#fff;padding:14px 18px;font-weight:700;}
.case-card .body{padding:16px 18px 34px;font-size:14.5px;color:var(--gray);}
.case-card .body b{color:var(--navy);}
/* 三段各限 3 行，保证全部卡片等高；点击卡片展开全文 */
.case-card .cs-line{margin:0 0 10px;line-height:1.7;min-height:5.1em;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.case-card .cs-line:last-child{margin-bottom:0;}
.case-card .top{min-height:78px;box-sizing:border-box;}
.case-card::after{content:"展开全文";position:absolute;right:16px;bottom:11px;font-size:12px;color:var(--gray2);transition:.2s;}
.case-card:hover::after{color:var(--gold);}
.case-card.expanded .cs-line{display:block;overflow:visible;-webkit-line-clamp:unset;}
.case-card.expanded::after{content:"收起";}

/* ---------- View tabs (「最新动态 / 文章洞察」双栏目切换条) ---------- */
.view-tabs{padding:6px 0 26px;}
.view-tabs-inner{max-width:980px;display:flex;gap:14px;}
.view-tab{flex:1;display:flex;flex-direction:column;gap:3px;padding:14px 20px;
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  color:var(--navy);font-weight:700;font-size:15.5px;text-decoration:none;transition:.2s;}
.view-tab small{color:var(--gray2);font-weight:400;font-size:12.5px;letter-spacing:.3px;}
.view-tab:hover{border-color:var(--gold);transform:translateY(-2px);box-shadow:var(--shadow);}
.view-tab.active{background:var(--navy);color:#fff;border-color:var(--navy);}
.view-tab.active small{color:rgba(255,255,255,.75);}
@media (max-width:600px){.view-tabs-inner{flex-direction:column;}}

/* ---------- Events summary card (「超一在现场」列表摘要卡，对标 36氪/澎湃) ---------- */
.ev-summary-list{display:flex;flex-direction:column;gap:22px;max-width:980px;margin:0 auto;}
.ev-summary-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);display:grid;grid-template-columns:240px 1fr;gap:0;
  overflow:hidden;transition:.2s;}
.ev-summary-card:hover{transform:translateY(-3px);border-color:var(--gold);}
.ev-thumb{display:block;width:240px;height:135px;align-self:center;justify-self:center;overflow:hidden;background:var(--soft);}
.ev-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.ev-summary-card:hover .ev-thumb img{transform:scale(1.04);}
.ev-summary-text{padding:22px 26px 22px;display:flex;flex-direction:column;gap:8px;min-width:0;}
.ev-meta{font-size:13px;color:var(--gray2);letter-spacing:.3px;}
.ev-summary-text h3{margin:2px 0 0;font-size:20px;color:var(--navy);line-height:1.4;font-weight:700;}
.ev-excerpt{color:#2c3540;font-size:14.8px;margin:0;line-height:1.78;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
  flex:1;}
.ev-more{font-weight:700;color:var(--navy2);font-size:14.5px;align-self:flex-start;margin-top:auto;}
.ev-more:hover{color:var(--gold-d);}
@media (max-width:860px){
  .ev-summary-card{grid-template-columns:1fr;}
  .ev-thumb{width:100%;height:auto;aspect-ratio:16/9;}
}

/* ---------- Live detail page (/live/{slug}.html) ---------- */
.live-detail{padding:30px 0 60px;background:#fff;}
.live-detail .wrap{max-width:880px;}
.live-detail .ev-full-body{max-width:100%;padding:36px 38px 30px;border:1px solid var(--line);
  border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);}
.live-detail .ev-full-head{padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:22px;}
.live-detail .ev-full-head h1{font-size:30px;color:var(--navy);margin:6px 0 0;line-height:1.3;font-weight:800;}
.live-detail .ev-full-head .ip-tag{margin-top:8px;display:inline-block;}
.live-detail .ev-full-head .ev-meta{margin-bottom:6px;}
/* 详情页底部：公众号原文 + 上下篇 */
.ev-full-foot-cta{text-align:center;margin-bottom:24px;}
.ev-full-foot-cta .ev-more{font-size:15.5px;padding:10px 20px;border:2px solid var(--navy2);
  border-radius:6px;transition:.2s;}
.ev-full-foot-cta .ev-more:hover{background:var(--navy2);color:#fff;border-color:var(--navy2);}
.ld-prev-next{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;
  margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.ld-nav-link{display:flex;flex-direction:column;gap:4px;color:var(--navy);text-decoration:none;
  font-size:14px;line-height:1.5;transition:color .2s;max-width:280px;}
.ld-nav-link:hover{color:var(--gold-d);}
.ld-nav-link span{font-size:12px;color:var(--gray2);font-weight:600;}
.ld-nav-link.ld-nav-next{text-align:right;margin-left:auto;}
.ld-nav-back{padding:8px 14px;border:1px solid var(--line);border-radius:6px;color:var(--navy);
  font-size:14px;font-weight:600;text-decoration:none;transition:.2s;white-space:nowrap;}
.ld-nav-back:hover{background:var(--soft);border-color:var(--navy2);}
@media (max-width:860px){
  .live-detail .ev-full-body{padding:24px 20px 20px;}
  .live-detail .ev-full-head h1{font-size:24px;}
  .ld-prev-next{grid-template-columns:1fr;gap:12px;}
  .ld-nav-link.ld-nav-next{text-align:left;margin-left:0;}
}

/* ---------- 详情页正文样式（ev-full-body 共享） ---------- */
.ev-full-body h4{font-size:17px;color:var(--navy);margin:22px 0 8px;font-weight:700;}
.ev-full-body blockquote{margin:18px 0;padding:10px 16px;border-left:4px solid var(--gold);
  background:var(--soft);color:var(--navy);font-size:15.5px;line-height:1.8;font-weight:600;border-radius:0 6px 6px 0;}
.ev-full-body blockquote p{margin:0;}
.ev-full-body ul{margin:10px 0;padding-left:24px;}
.ev-full-body ul li{font-size:15.5px;color:#2c3540;line-height:1.85;margin:6px 0;list-style:disc;}
.ev-full-body .ev-lead{font-size:16px;color:#2c3540;line-height:1.85;margin:0 0 14px;}
.ev-full-body h3{font-size:19px;color:var(--navy2);margin:30px 0 10px;
  border-left:4px solid var(--gold);padding-left:12px;line-height:1.4;}
.ev-full-body p{font-size:15.5px;color:#2c3540;line-height:1.85;margin:10px 0;}
.ev-full-body figure{margin:26px 0;text-align:center;}
.ev-full-body figure img{max-width:100%;height:auto;border-radius:8px;box-shadow:0 2px 12px rgba(21,41,77,.08);}
.ev-full-body figcaption{font-size:13px;color:var(--gray2);margin-top:8px;letter-spacing:.2px;}
.ev-about{margin-top:28px;padding:14px 18px;background:var(--soft);border-left:4px solid var(--gold);
  border-radius:0 8px 8px 0;font-size:14.5px;color:var(--navy);font-weight:600;}
.ev-about-note{font-size:13.5px;color:var(--gray);line-height:1.75;margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);}

/* ---------- Home news teaser (超一在现场 入口) ---------- */
.news-teaser{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;}
.news-teaser .section-head h2{color:#fff;}
.news-teaser .section-head p{color:#cdd8ea;}
.news-teaser .nt-list{display:grid;gap:14px;margin:8px 0 26px;}
.news-teaser .nt-item{display:flex;gap:16px;align-items:baseline;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:16px 18px;}
.news-teaser .nt-date{font-weight:800;color:var(--gold);font-size:15px;white-space:nowrap;min-width:96px;}
.news-teaser .nt-text{color:#e7eefb;font-size:15px;}
.news-teaser .nt-text b{color:#fff;}

/* ---------- Tables ---------- */
table.tbl{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px;}
table.tbl th,table.tbl td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top;}
table.tbl th{background:var(--navy);color:#fff;font-weight:600;}
table.tbl tr:nth-child(even) td{background:var(--bg);}

/* ---------- Contact form ---------- */
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field label{display:block;font-weight:600;color:var(--navy);margin-bottom:6px;font-size:14.5px;}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:8px;font-size:15px;font-family:inherit;background:#fff;color:var(--ink);}
.field input:focus,.field textarea:focus{border-color:var(--navy2);outline:none;}

/* ---------- Breadcrumb ---------- */
.crumb{font-size:13.5px;color:var(--gray2);padding:16px 0 0;}
.crumb a{color:var(--gray2);}
.crumb span{margin:0 6px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#cdd8ea;padding:46px 0 28px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
.site-footer h4{color:#fff;font-size:16px;margin:0 0 14px;}
.site-footer a{color:#cdd8ea;display:block;margin:7px 0;font-size:14.5px;}
.site-footer a:hover{color:var(--gold);}
.site-footer .copy{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;
  font-size:13px;color:#9fb0c9;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .nav-links{position:absolute;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:8px 0;display:none;box-shadow:var(--shadow);}
  .nav-links.open{display:flex;}
  .nav-links li{width:100%;}
  .nav-links a{display:block;padding:13px 22px;}
  .nav-links a.active::after{display:none;}
  .nav-toggle{display:flex;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  section{padding:44px 0;}
}