/*
Theme Name: Contemporary Youth Home
Theme URI: https://modernyouth.work
Description: 当代青年官网首页——三审美橱窗（实验室冷静美学 / 美式自然健康 / 水的克制哲学）。分屏 + 轮换双模式，三套主题皮肤一键切换。
Version: 1.0.0
Author: 当代青年
License: GPL v2 or later
Text Domain: cy-home
*/
*{margin:0;padding:0;box-sizing:border-box;-webkit-user-select:text!important;user-select:text!important}
:root{
  --bg:#F7F8FA;--fg:#1A2230;--muted:#5A6678;--line:#E3E7EE;
  --accent:#1565C0;--accent-soft:rgba(21,101,192,.08);
  --card:#FFFFFF;--shadow:0 8px 32px rgba(16,42,80,.08);
  --radius:18px;--font:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --num:'SF Mono',Consolas,'Menlo',monospace;
  --header-bg:rgba(255,255,255,.85);--hero-fg:#FFFFFF;
}
:root[data-theme="ns"]{
  --bg:#FAF6EE;--fg:#2B2A26;--muted:#7A756A;--line:#EDE4D3;
  --accent:#E07B1F;--accent-soft:rgba(224,123,31,.10);
  --card:#FFFDF7;--shadow:0 8px 32px rgba(140,90,20,.10);
  --header-bg:rgba(255,253,247,.85);--hero-fg:#2B2A26;
}
:root[data-theme="pv"]{
  --bg:#F6FAFC;--fg:#16303D;--muted:#5E7683;--line:#DCE9F0;
  --accent:#0E4C6E;--accent-soft:rgba(14,76,110,.07);
  --card:#FFFFFF;--shadow:0 4px 20px rgba(10,40,60,.06);
  --header-bg:rgba(246,250,252,.85);--hero-fg:#FFFFFF;
}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--fg);font-family:var(--font);
  transition:background .6s ease,color .6s ease;min-height:100vh;overflow-x:hidden;
}
.bg-deco{position:fixed;inset:0;pointer-events:none;z-index:0;transition:opacity .6s ease;opacity:0}
.bg-deco.bm{background:
  linear-gradient(var(--line) 1px,transparent 1px),
  linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;opacity:.5}
.bg-deco.ns{background:radial-gradient(1200px 500px at 85% -10%,#FFE3B8 0%,transparent 55%),radial-gradient(900px 420px at 5% 110%,#DCEBD2 0%,transparent 50%);opacity:.9}
.bg-deco.pv{background:radial-gradient(1000px 600px at 50% -20%,#E2F0F7 0%,transparent 60%);opacity:.8}
.bg-deco.active{opacity:1}
.wrap{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:0 32px}

header.cy-header{
  position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);
  background:var(--header-bg);border-bottom:1px solid var(--line);
  transition:background .6s ease,border-color .6s ease;
}
.nav{max-width:1200px;margin:0 auto;padding:16px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.logo{font-weight:800;font-size:20px;letter-spacing:.02em;display:flex;align-items:center;gap:10px}
.logo .dot{width:10px;height:10px;border-radius:50%;background:var(--accent);transition:background .6s ease}
.logo small{font-weight:400;font-size:12px;color:var(--muted);letter-spacing:.08em}
.theme-switch{display:flex;gap:6px;background:var(--accent-soft);padding:4px;border-radius:99px;border:1px solid var(--line);transition:all .6s ease}
.theme-switch button{
  border:0;background:transparent;color:var(--muted);font-family:var(--font);
  font-size:13px;font-weight:600;padding:8px 16px;border-radius:99px;cursor:pointer;
  transition:all .3s ease;letter-spacing:.04em;
}
.theme-switch button.active{background:var(--accent);color:#fff;box-shadow:0 4px 14px var(--accent-soft)}

/* ===== 全宽海报级 Hero ===== */
.hero-section{position:relative;display:flex;align-items:center;min-height:70vh;overflow:hidden;margin:0 -32px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:opacity .6s ease;opacity:1}
.hero-bg{background-image:url('images/skin-bm.png')}
:root[data-theme="ns"] .hero-bg{background-image:url('images/skin-ns.png')}
:root[data-theme="pv"] .hero-bg{background-image:url('images/skin-pv.png')}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(rgba(0,0,0,.35),rgba(0,0,0,.55));transition:background .6s ease}
:root[data-theme="ns"] .hero-overlay{background:linear-gradient(rgba(255,255,255,.4),rgba(255,255,255,.2))}
.hero-inner{position:relative;z-index:2;max-width:1200px;width:100%;margin:0 auto;padding:140px 32px 120px;color:var(--hero-fg)}
.hero-inner .kicker{font-family:var(--num);font-size:12px;letter-spacing:.22em;color:var(--accent);margin-bottom:18px;font-weight:700}
.hero-inner h1{font-size:clamp(32px,5.2vw,58px);line-height:1.16;font-weight:900;letter-spacing:-.01em}
.hero-inner h1 em{font-style:normal;color:var(--accent)}
.hero-inner .sub{margin-top:22px;max-width:640px;color:var(--hero-fg);font-size:clamp(15px,1.7vw,18px);line-height:1.9;opacity:.92}
.hero-inner .sub b{color:var(--hero-fg);font-weight:800}
.hero-inner .tags{margin-top:34px;display:flex;gap:10px;flex-wrap:wrap}
.hero-inner .tags span{font-size:13px;font-weight:600;padding:9px 18px;border-radius:99px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.1);color:var(--hero-fg);transition:all .4s ease;backdrop-filter:blur(4px)}
:root[data-theme="ns"] .hero-inner .tags span{border-color:rgba(43,42,38,.18);background:rgba(255,253,247,.65)}
.hero-inner .tags span b{color:var(--accent);font-weight:800}

.section-head{display:flex;align-items:baseline;justify-content:space-between;margin:24px 0 26px;gap:16px;flex-wrap:wrap}
.section-head h2{font-size:22px;font-weight:800}
.mode-switch{display:flex;gap:6px;background:var(--accent-soft);padding:4px;border-radius:99px;border:1px solid var(--line)}
.mode-switch button{border:0;background:transparent;color:var(--muted);font-family:var(--font);font-size:13px;font-weight:600;padding:7px 15px;border-radius:99px;cursor:pointer;transition:all .3s}
.mode-switch button.active{background:var(--accent);color:#fff}

.showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .4s ease,box-shadow .4s ease,opacity .4s ease,border-color .4s ease;
  display:flex;flex-direction:column;min-height:420px;
}
.card:hover{transform:translateY(-6px)}
.card .bar{position:absolute;top:0;left:0;right:0;height:4px;border-radius:var(--radius) var(--radius) 0 0}
.card[data-brand="bm"] .bar{background:linear-gradient(90deg,#0D47A1,#42A5F5)}
.card[data-brand="ns"] .bar{background:linear-gradient(90deg,#E07B1F,#FFC26B)}
.card[data-brand="pv"] .bar{background:linear-gradient(90deg,#0E4C6E,#4FB0C6)}
.card .brand{font-family:var(--num);font-size:11px;letter-spacing:.24em;font-weight:700;margin-bottom:14px}
.card[data-brand="bm"] .brand{color:#1565C0}
.card[data-brand="ns"] .brand{color:#E07B1F}
.card[data-brand="pv"] .brand{color:#0E4C6E}
.card h3{font-size:21px;font-weight:900;line-height:1.4;margin-bottom:8px}
.card .role{font-size:13px;color:var(--muted);margin-bottom:20px;line-height:1.7}
.card .facts{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.card .facts span{font-family:var(--num);font-size:12px;font-weight:700;padding:7px 12px;border-radius:8px;background:var(--accent-soft);color:var(--accent);letter-spacing:.02em}
.card .desc{font-size:14px;line-height:1.95;color:var(--muted);flex:1}
.card .desc b{color:var(--fg)}
.card .aesthetic{margin-top:20px;padding-top:18px;border-top:1px dashed var(--line);font-size:12.5px;color:var(--muted);letter-spacing:.04em;line-height:1.8}
.card .aesthetic b{color:var(--accent)}

.showcase.carousel{display:block;position:relative;min-height:520px}
.showcase.carousel .card{position:absolute;inset:0;opacity:0;transform:translateY(14px);pointer-events:none;min-height:0}
.showcase.carousel .card.active{opacity:1;transform:translateY(0);pointer-events:auto}
.car-nav{display:none}
.showcase.carousel ~ .car-nav{display:flex;justify-content:center;gap:10px;margin-top:22px;align-items:center}
.car-nav .dots{display:flex;gap:8px}
.car-nav .dot{width:9px;height:9px;border-radius:50%;background:var(--line);border:0;cursor:pointer;transition:all .3s;padding:0}
.car-nav .dot.active{background:var(--accent);transform:scale(1.25)}
.car-nav .progress{width:120px;height:3px;background:var(--line);border-radius:3px;overflow:hidden;border:0;cursor:default}
.car-nav .progress i{display:block;height:100%;width:0;background:var(--accent)}

.philo{margin:72px 0 24px;padding:44px 40px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);transition:all .6s ease}
.philo .kicker{margin-bottom:12px}
.philo p{font-size:clamp(16px,2vw,20px);line-height:2;color:var(--fg)}
.philo p b{color:var(--accent)}
.philo .three{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.philo .three div{border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:13px;line-height:1.8;color:var(--muted);background:var(--bg)}
.philo .three b{display:block;font-size:14px;color:var(--fg);margin-bottom:4px}
.philo .three .n{font-family:var(--num);font-size:11px;letter-spacing:.2em;color:var(--accent);font-weight:700}

footer.cy-footer{margin:64px 0 0;border-top:1px solid var(--line);padding:34px 0 60px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer.cy-footer .f1{font-size:13px;color:var(--muted);line-height:2}
footer.cy-footer .f1 b{color:var(--fg)}
footer.cy-footer .f2{font-family:var(--num);font-size:12px;color:var(--muted);letter-spacing:.12em;text-align:right}

@media(max-width:900px){
  .showcase{grid-template-columns:1fr}
  .showcase.carousel{min-height:640px}
  .philo .three{grid-template-columns:1fr}
  .hero-inner{padding:100px 24px 80px}
  .hero-section{margin:0 -24px}
}