/* ============================================================
   龚亦镈 个人品牌站 — Apple 风 refined minimalism
   ============================================================ */

:root{
  --bg:        #fbfbfd;
  --bg-soft:   #f5f5f7;
  --ink:       #1d1d1f;
  --ink-2:     #6e6e73;
  --ink-3:     #86868b;
  --line:      #d2d2d7;
  --accent:    #0071e3;
  --accent-ink:#0066cc;
  --card:      #ffffff;
  --radius:    20px;
  --radius-sm: 14px;
  --maxw:      1080px;
  --ease:      cubic-bezier(.22,.61,.36,1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "PingFang SC", "Helvetica Neue", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  line-height:1.5;
  overflow-x:hidden;
}
a{ color:inherit; text-decoration:none; }
::selection{ background:rgba(0,113,227,.16); }

/* ---------------- 导航 ---------------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  background:rgba(251,251,253,.72);
  border-bottom:1px solid transparent;
  transition:border-color .4s var(--ease), background .4s var(--ease);
}
.nav.scrolled{ border-bottom-color:rgba(0,0,0,.08); }
.nav-inner{
  max-width:var(--maxw); margin:0 auto;
  height:52px; padding:0 22px;
  display:flex; align-items:center; justify-content:space-between;
}
.nav-logo{ font-size:18px; font-weight:600; letter-spacing:.02em; }
.nav-links{ display:flex; gap:34px; }
.nav-links a{
  font-size:13px; color:var(--ink-2); font-weight:400;
  transition:color .25s var(--ease); position:relative;
}
.nav-links a:hover{ color:var(--ink); }
.lang-toggle{
  background:none; border:none; cursor:pointer; font-family:var(--font);
  font-size:13px; color:var(--ink-3); display:flex; align-items:center; gap:4px;
  padding:5px 10px; border-radius:980px; transition:background .25s var(--ease);
}
.lang-toggle:hover{ background:var(--bg-soft); }
.lang-opt{ transition:color .25s var(--ease); }
.lang-opt.is-active{ color:var(--ink); font-weight:600; }
.lang-sep{ color:var(--line); }

/* ---------------- 首屏 ---------------- */
.hero{
  position:relative; min-height:100vh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; padding:120px 22px 80px; overflow:hidden;
}
.hero-mesh{
  position:absolute; inset:-20% -10% auto -10%; height:90%;
  background:
    radial-gradient(40% 50% at 22% 20%, rgba(0,113,227,.14), transparent 70%),
    radial-gradient(38% 46% at 80% 12%, rgba(120,90,255,.10), transparent 70%),
    radial-gradient(50% 60% at 60% 80%, rgba(0,200,180,.08), transparent 70%);
  filter:blur(8px); pointer-events:none;
  animation:meshFloat 18s ease-in-out infinite alternate;
}
@keyframes meshFloat{
  from{ transform:translate3d(0,0,0) scale(1); }
  to{ transform:translate3d(0,-3%,0) scale(1.06); }
}
.hero-content{
  position:relative; width:100%; max-width:1080px;
  display:grid; grid-template-columns:1fr 1.05fr; gap:56px; align-items:center;
  text-align:left;
}
.hero-text{ min-width:0; }
.hero-org{
  font-size:15px; color:var(--accent-ink); font-weight:600; letter-spacing:.06em;
  margin-bottom:18px; opacity:0; animation:fadeUp .9s var(--ease) .1s forwards;
}
.hero-name{
  font-size:clamp(46px,6vw,82px); font-weight:600; letter-spacing:-.025em;
  line-height:1.02; margin-bottom:22px;
  opacity:0; animation:fadeUp .9s var(--ease) .22s forwards;
}
.hero-tagline{
  font-size:clamp(20px,3vw,28px); font-weight:500; color:var(--ink); letter-spacing:-.01em;
  margin-bottom:20px; opacity:0; animation:fadeUp .9s var(--ease) .34s forwards;
}
.hero-bio{
  font-size:17px; color:var(--ink-2); max-width:560px; margin:0; line-height:1.7;
  opacity:0; animation:fadeUp .9s var(--ease) .46s forwards;
}
.hero-photo{
  margin:0; width:100%;
  opacity:0; animation:fadeUp 1s var(--ease) .55s forwards;
}
.hero-photo img{
  width:100%; display:block; border-radius:22px;
  aspect-ratio:16 / 9; object-fit:cover; object-position:58% 38%;
  box-shadow:0 28px 70px rgba(0,0,0,.18); border:1px solid rgba(0,0,0,.05);
}
.hero-photo figcaption{
  margin-top:14px; font-size:13px; color:var(--ink-3); letter-spacing:.02em;
}
.hero-scroll{
  position:absolute; bottom:38px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-size:12px; color:var(--ink-3); letter-spacing:.04em;
  opacity:0; animation:fadeIn 1s var(--ease) 1s forwards;
}
.hero-scroll svg{ animation:bob 2.2s ease-in-out infinite; }
@keyframes bob{ 0%,100%{ transform:translateY(0);} 50%{ transform:translateY(5px);} }

@keyframes fadeUp{ from{ opacity:0; transform:translateY(22px);} to{ opacity:1; transform:translateY(0);} }
@keyframes fadeIn{ from{ opacity:0;} to{ opacity:1;} }

/* ---------------- 通用区块 ---------------- */
section{ scroll-margin-top:60px; }
.section-title{
  font-size:clamp(32px,5vw,46px); font-weight:600; letter-spacing:-.02em; text-align:center;
}
.section-sub{
  font-size:16px; color:var(--ink-2); text-align:center; margin-top:12px;
}
.block-label{
  font-size:13px; font-weight:600; color:var(--ink-3); letter-spacing:.08em;
  text-transform:uppercase; margin-bottom:20px;
}

/* ---------------- 数字条 ---------------- */
.stats{ max-width:var(--maxw); margin:0 auto; padding:0 22px; }
.stats-inner{
  display:flex; justify-content:center; gap:0; flex-wrap:wrap;
  border:1px solid var(--line); border-radius:var(--radius);
  background:var(--card); overflow:hidden;
}
.stat{
  flex:1 1 0; min-width:140px; text-align:center; padding:30px 20px;
  border-right:1px solid var(--bg-soft);
}
.stat:last-child{ border-right:none; }
.stat-value{ font-size:clamp(26px,3.4vw,38px); font-weight:600; letter-spacing:-.02em; color:var(--ink); }
.stat-label{ font-size:13px; color:var(--ink-3); margin-top:8px; letter-spacing:.02em; }

/* ---------------- 投资主线 / 观点 ---------------- */
.thesis{ max-width:var(--maxw); margin:0 auto; padding:96px 22px 0; }
.thesis-lead{
  font-size:clamp(18px,2.4vw,22px); color:var(--ink); font-weight:500;
  text-align:center; max-width:760px; margin:18px auto 0; line-height:1.6; letter-spacing:-.01em;
}
.thesis-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:44px;
}
.thesis-card{
  position:relative; background:var(--card); border:1px solid rgba(0,0,0,.05); border-radius:var(--radius);
  padding:32px 28px; transition:transform .4s var(--ease), box-shadow .4s var(--ease);
}
.thesis-card:hover{ transform:translateY(-4px); box-shadow:0 18px 40px rgba(0,0,0,.08); }
.thesis-num{
  display:block; font-size:13px; font-weight:600; color:var(--accent);
  letter-spacing:.1em; margin-bottom:14px;
}
.thesis-card h3{ font-size:20px; font-weight:600; letter-spacing:-.01em; margin-bottom:14px; }
.thesis-card p{ font-size:15px; color:var(--ink-2); line-height:1.75; }

/* 信条 */
.beliefs{ max-width:820px; margin:64px auto 0; }
.beliefs-title{
  font-size:13px; font-weight:600; color:var(--ink-3); letter-spacing:.1em;
  text-transform:uppercase; text-align:center; margin-bottom:8px;
}
.belief-list{ list-style:none; }
.belief-list li{
  position:relative; font-size:clamp(19px,2.6vw,24px); font-weight:500;
  color:var(--ink); letter-spacing:-.01em; line-height:1.5;
  padding:26px 0 26px 30px; border-bottom:1px solid var(--line);
}
.belief-list li:last-child{ border-bottom:none; }
.belief-list li::before{
  content:""; position:absolute; left:0; top:34px;
  width:14px; height:2px; border-radius:2px; background:var(--accent);
}

/* ---------------- 与创始人同行 ---------------- */
.founders{ background:var(--bg-soft); margin-top:96px; padding:84px 22px; }
.founders-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:18px;
  max-width:var(--maxw); margin:40px auto 0;
}
.founder-card{
  background:var(--card); border:1px solid rgba(0,0,0,.04); border-radius:var(--radius);
  padding:30px 28px; transition:transform .4s var(--ease), box-shadow .4s var(--ease);
}
.founder-card:hover{ transform:translateY(-4px); box-shadow:0 18px 40px rgba(0,0,0,.07); }
.founder-card h3{ font-size:18px; font-weight:600; letter-spacing:-.01em; margin-bottom:12px; }
.founder-card p{ font-size:15px; color:var(--ink-2); line-height:1.75; }

/* 组合结果信号 */
.portfolio-highlight{
  font-size:14.5px; color:var(--ink-2); text-align:center;
  max-width:660px; margin:16px auto 0; line-height:1.7;
}

/* ---------------- 关于 ---------------- */
.about{
  max-width:var(--maxw); margin:0 auto; padding:100px 22px;
  border-top:1px solid var(--line);
}
.about-grid{
  display:grid; grid-template-columns:1fr 1.4fr; gap:64px;
}
.edu-list, .pub-list{ list-style:none; }
.edu-list li{
  font-size:19px; font-weight:500; color:var(--ink); padding:10px 0;
  border-bottom:1px solid var(--bg-soft);
}
.pub-list li{
  padding:14px 0; border-bottom:1px solid var(--bg-soft);
}
.pub-title{ font-size:16px; font-weight:500; color:var(--ink); line-height:1.45; }
.pub-meta{ font-size:13px; color:var(--ink-3); margin-top:4px; font-style:italic; }

/* ---------------- 投资组合 ---------------- */
.portfolio{ max-width:var(--maxw); margin:0 auto; padding:60px 22px 100px; }
.portfolio-head{ text-align:center; margin-bottom:50px; }
.segmented{
  position:relative; display:inline-flex; margin-top:30px;
  background:var(--bg-soft); border-radius:980px; padding:4px;
}
.seg-btn{
  position:relative; z-index:2; border:none; background:none; cursor:pointer;
  font-family:var(--font); font-size:14px; font-weight:500; color:var(--ink-2);
  padding:9px 26px; border-radius:980px; transition:color .3s var(--ease);
}
.seg-btn.is-active{ color:var(--ink); }
.seg-thumb{
  position:absolute; z-index:1; top:4px; bottom:4px; left:4px;
  width:calc(50% - 4px); background:var(--card); border-radius:980px;
  box-shadow:0 2px 8px rgba(0,0,0,.10); transition:transform .35s var(--ease);
}
.seg-thumb.right{ transform:translateX(100%); }

.sector-group{ margin-bottom:56px; }
.sector-group:last-child{ margin-bottom:0; }
.sector-head{
  display:flex; align-items:baseline; gap:12px; margin-bottom:24px;
  padding-bottom:14px; border-bottom:1px solid var(--line);
}
.sector-head h3{ font-size:24px; font-weight:600; letter-spacing:-.01em; }
.sector-head .count{ font-size:14px; color:var(--ink-3); }

.card-grid{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:18px;
}
.card{
  position:relative; background:var(--card); border-radius:var(--radius);
  padding:24px; cursor:pointer; border:1px solid rgba(0,0,0,.04);
  transition:transform .4s var(--ease), box-shadow .4s var(--ease);
  opacity:0; transform:translateY(16px); animation:cardIn .6s var(--ease) forwards;
}
@keyframes cardIn{ to{ opacity:1; transform:translateY(0);} }
.card:hover{ transform:translateY(-6px); box-shadow:0 18px 40px rgba(0,0,0,.10); }
.card-icon{
  width:50px; height:50px; border-radius:14px; display:flex; align-items:center; justify-content:center;
  font-size:22px; font-weight:600; color:#fff; margin-bottom:18px; letter-spacing:-.02em;
}
.card-icon.has-logo{
  background:#fff; border:1px solid var(--line); padding:8px;
}
.card-icon.has-logo img{ max-width:100%; max-height:100%; object-fit:contain; }
.card-name{ font-size:19px; font-weight:600; letter-spacing:-.01em; margin-bottom:6px; }
.card-loc{ font-size:13px; color:var(--ink-3); margin-bottom:14px; }
.card-tags{ display:flex; flex-wrap:wrap; gap:6px; }
.tag{
  font-size:11.5px; color:var(--ink-2); background:var(--bg-soft);
  padding:4px 10px; border-radius:980px; white-space:nowrap;
}
.card-arrow{
  position:absolute; top:24px; right:24px; color:var(--ink-3); opacity:0;
  transform:translateX(-4px); transition:opacity .3s var(--ease), transform .3s var(--ease);
}
.card:hover .card-arrow{ opacity:1; transform:translateX(0); }

/* 时间视图 */
.time-row{ display:flex; gap:28px; margin-bottom:40px; align-items:flex-start; }
.time-year{
  flex:0 0 96px; text-align:right; font-size:30px; font-weight:600; color:var(--ink);
  letter-spacing:-.02em; padding-top:6px; position:sticky; top:70px;
}
.time-year.unknown{ font-size:17px; color:var(--ink-3); font-weight:500; }
.time-row .card-grid{ flex:1; }

/* ---------------- 联系 ---------------- */
.contact{
  max-width:var(--maxw); margin:0 auto; padding:100px 22px 110px;
  text-align:center; border-top:1px solid var(--line);
}
.contact-title{ font-size:clamp(30px,4.5vw,42px); font-weight:600; letter-spacing:-.02em; }
.contact-desc{ font-size:17px; color:var(--ink-2); margin-top:14px; }
.contact-cards{
  display:flex; gap:16px; justify-content:center; flex-wrap:wrap; margin-top:40px;
}
.contact-card{
  background:var(--card); border-radius:var(--radius-sm); padding:22px 34px;
  border:1px solid rgba(0,0,0,.05); min-width:200px;
  transition:transform .35s var(--ease), box-shadow .35s var(--ease);
}
.contact-card:hover{ transform:translateY(-4px); box-shadow:0 14px 30px rgba(0,0,0,.08); }
.contact-card .cc-label{ font-size:12px; color:var(--ink-3); letter-spacing:.06em; text-transform:uppercase; }
.contact-card .cc-value{ font-size:20px; font-weight:600; margin-top:8px; color:var(--accent-ink); }

.footer{
  text-align:center; font-size:13px; color:var(--ink-3);
  padding:30px 22px 40px; border-top:1px solid var(--line);
}

/* ---------------- 详情弹层 ---------------- */
.modal-overlay{
  position:fixed; inset:0; z-index:200; display:flex; align-items:center; justify-content:center;
  padding:22px; background:rgba(0,0,0,.32);
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  opacity:0; visibility:hidden; transition:opacity .35s var(--ease), visibility .35s var(--ease);
}
.modal-overlay.open{ opacity:1; visibility:visible; }
.modal-card{
  position:relative; background:var(--card); border-radius:26px; max-width:520px; width:100%;
  padding:44px; box-shadow:0 30px 80px rgba(0,0,0,.25); overflow:hidden;
  transform:scale(.94) translateY(12px); transition:transform .4s var(--ease);
}
.modal-overlay.open .modal-card{ transform:scale(1) translateY(0); }
.modal-close{
  position:absolute; top:20px; right:20px; width:34px; height:34px; border-radius:50%;
  border:none; background:var(--bg-soft); color:var(--ink-2); cursor:pointer;
  display:flex; align-items:center; justify-content:center; transition:background .25s var(--ease);
}
.modal-close:hover{ background:var(--line); }
.modal-photo{
  display:none; height:200px; margin:-44px -44px 0; border-radius:26px 26px 0 0;
  background-size:cover; background-position:center; background-repeat:no-repeat;
}
.modal-photo.show{ display:block; }
.modal-photo.show + .modal-icon{ margin-top:-32px; position:relative; box-shadow:0 6px 18px rgba(0,0,0,.18); }
.modal-icon{
  width:64px; height:64px; border-radius:18px; display:flex; align-items:center; justify-content:center;
  font-size:28px; font-weight:600; color:#fff; margin-bottom:22px;
}
.modal-icon.has-logo{ background:#fff; border:1px solid var(--line); padding:10px; }
.modal-icon.has-logo img{ max-width:100%; max-height:100%; object-fit:contain; }
.modal-name{ font-size:28px; font-weight:600; letter-spacing:-.02em; }
.modal-meta{ font-size:14px; color:var(--ink-3); margin-top:8px; }
.modal-tags{ display:flex; flex-wrap:wrap; gap:7px; margin-top:18px; }
.modal-summary{ font-size:16px; color:var(--ink); line-height:1.7; margin-top:22px; }
.modal-link{
  display:inline-flex; align-items:center; gap:6px; margin-top:24px;
  font-size:15px; font-weight:500; color:var(--accent);
}
.modal-link::after{ content:"›"; font-size:18px; }
.modal-link:hover{ color:var(--accent-ink); }
.modal-link.hidden{ display:none; }

/* ---------------- 响应式 ---------------- */
@media (max-width:900px){
  .hero-content{ grid-template-columns:1fr; gap:34px; text-align:center; max-width:620px; }
  .hero-bio{ margin-left:auto; margin-right:auto; }
  .hero-photo{ max-width:600px; margin:0 auto; }
}

@media (max-width:760px){
  .nav-links{ display:none; }
  .about-grid{ grid-template-columns:1fr; gap:44px; }
  .thesis-grid{ grid-template-columns:1fr; }
  .founders-grid{ grid-template-columns:1fr; }
  .stat{ flex-basis:50%; }
  .time-row{ flex-direction:column; gap:12px; }
  .time-year{ position:static; text-align:left; flex:none; }
  .modal-card{ padding:32px 26px; }
  .modal-photo{ height:170px; margin:-32px -26px 0; }
}