/* roulang page: index */
:root{
  --ink:#0F1114;
  --ink-2:#22262C;
  --deep:#0E3B34;
  --muted:#6E737B;
  --paper:#F6F6F3;
  --card:#FFFFFF;
  --line:#E3E4E0;
  --volt:#D6FF3B;
  --flare:#FF5A3C;
  --ok:#1FA971;
  --warn:#E8A33D;
  --err:#D9453C;
  --r-card:16px;
  --r-img:12px;
  --r-tag:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,17,20,.04),0 8px 24px rgba(15,17,20,.06);
  --sh-2:0 12px 32px rgba(15,17,20,.10);
  --pad:clamp(20px,4vw,48px);
  --nav-h:64px;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Oswald",var(--font-cn);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(34px,5.2vw,64px);font-weight:800;letter-spacing:-.02em;line-height:1.08}
h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.2;letter-spacing:-.01em}
h3{font-size:21px;font-weight:700;line-height:1.35}
p{line-height:1.85}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
.container{max-width:1240px;margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.num{font-family:var(--font-num);font-weight:600;letter-spacing:.01em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--muted);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--volt);display:block}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  padding:4px 10px;border-radius:var(--r-tag);line-height:1.5;
}
.badge-volt{background:var(--volt);color:var(--ink)}
.badge-ink{background:var(--ink);color:var(--volt)}
.badge-line{border:1px solid var(--line);color:var(--muted);background:transparent}
.badge-flare{background:rgba(255,90,60,.12);color:var(--flare);border:1px solid rgba(255,90,60,.3)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  padding:13px 26px;font-size:15px;font-weight:700;letter-spacing:.02em;
  cursor:pointer;transition:all .24s var(--ease);white-space:nowrap;
}
.btn .arw{transition:transform .24s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--volt);color:var(--ink)}
.btn-ghost{border-color:currentColor;background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.btn-ghost-light{border-color:rgba(246,246,243,.45);background:transparent;color:var(--paper)}
.btn-ghost-light:hover{background:var(--paper);border-color:var(--paper);color:var(--ink)}
.btn-volt{background:var(--volt);color:var(--ink)}
.btn-volt:hover{background:var(--paper);color:var(--ink)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;pointer-events:none}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;position:relative;padding-bottom:2px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:currentColor;transform:scaleX(1);transform-origin:left;
  transition:transform .22s var(--ease);
}
.link-more:hover::after{transform:scaleX(1);}
.link-more .arw{transition:transform .22s var(--ease)}
.link-more:hover .arw{transform:translateX(4px)}

/* 图片兜底 */
.media{
  position:relative;overflow:hidden;border-radius:var(--r-img);
  background:var(--ink);
  aspect-ratio:16/10;
}
.media::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,transparent calc(50% - 1px),var(--volt) calc(50% - 1px),var(--volt) calc(50% + 1px),transparent calc(50% + 1px)),
    linear-gradient(0deg,transparent calc(50% - 1px),var(--volt) calc(50% - 1px),var(--volt) calc(50% + 1px),transparent calc(50% + 1px));
  opacity:.35;
}
.media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:var(--nav-h);
  background:transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(246,246,243,.94);
  border-bottom-color:var(--line);
  backdrop-filter:blur(6px);
}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-left{display:flex;align-items:center;gap:clamp(20px,3vw,44px);min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:32px;height:24px;flex-shrink:0}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-text b{font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--paper);transition:color .28s var(--ease)}
.logo-text span{font-size:10px;letter-spacing:.18em;color:rgba(246,246,243,.6);transition:color .28s var(--ease)}
.site-header.is-scrolled .logo-text b{color:var(--ink)}
.site-header.is-scrolled .logo-text span{color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2vw,30px)}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;padding:6px 0;
  color:rgba(246,246,243,.82);transition:color .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--volt);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--paper)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--paper);font-weight:700}
.site-header.is-scrolled .nav-links a{color:var(--ink-2)}
.site-header.is-scrolled .nav-links a:hover,.site-header.is-scrolled .nav-links a.is-active{color:var(--ink)}
.site-header.is-scrolled .nav-links a::after{background:var(--ink)}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);
  border:1px solid rgba(246,246,243,.35);background:transparent;
  color:var(--paper);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .22s var(--ease);
}
.icon-btn:hover{background:var(--volt);border-color:var(--volt);color:var(--ink)}
.site-header.is-scrolled .icon-btn{border-color:var(--line);color:var(--ink)}
.site-header.is-scrolled .icon-btn:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.nav-cta{padding:10px 20px;font-size:14px;background:var(--volt);color:var(--ink)}
.nav-cta:hover{background:var(--paper);color:var(--ink)}
.site-header.is-scrolled .nav-cta{background:var(--ink);color:var(--paper)}
.site-header.is-scrolled .nav-cta:hover{background:var(--volt);color:var(--ink)}
.burger{
  display:none;width:40px;height:40px;border:1px solid rgba(246,246,243,.35);
  border-radius:10px;background:transparent;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.burger i{display:block;width:16px;height:1.5px;background:var(--paper);transition:background .22s var(--ease)}
.site-header.is-scrolled .burger{border-color:var(--line)}
.site-header.is-scrolled .burger i{background:var(--ink)}

/* 抽屉与搜索 */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--ink);
  transform:translateX(100%);transition:transform .34s var(--ease);
  display:flex;flex-direction:column;padding:22px var(--pad) 30px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:44px}
.drawer-close{width:40px;height:40px;border:1px solid rgba(246,246,243,.3);background:transparent;color:var(--paper);border-radius:10px;cursor:pointer;font-size:18px}
.drawer nav{display:flex;flex-direction:column;gap:4px;margin-top:34px}
.drawer nav a{
  color:var(--paper);font-size:26px;font-weight:700;padding:16px 0;
  border-bottom:1px solid rgba(246,246,243,.12);
}
.drawer nav a.is-active{color:var(--volt)}
.drawer-foot{margin-top:auto;padding-top:24px}
.drawer-foot .btn{width:100%}
.search-layer{
  position:fixed;inset:0;z-index:130;background:rgba(15,17,20,.97);
  display:none;flex-direction:column;justify-content:center;padding:0 var(--pad);
}
.search-layer.is-open{display:flex}
.search-layer form{max-width:760px;margin:0 auto;width:100%}
.search-layer input{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(246,246,243,.35);
  color:var(--paper);font-size:clamp(22px,3vw,34px);padding:14px 0;outline:none;
  transition:border-color .2s var(--ease);
}
.search-layer input:focus{border-bottom-color:var(--volt)}
.search-layer .hint{color:rgba(246,246,243,.5);font-size:13px;margin-top:14px}
.search-close{
  position:absolute;top:22px;right:var(--pad);
  background:transparent;border:1px solid rgba(246,246,243,.3);color:var(--paper);
  width:42px;height:42px;border-radius:50%;cursor:pointer;font-size:18px;
}

/* Hero */
.hero{
  position:relative;background:var(--ink);color:var(--paper);
  padding-top:calc(var(--nav-h) + 24px);
  padding-bottom:0;overflow:hidden;
}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(24px,4vw,60px);align-items:stretch;
}
.hero-copy{padding-bottom:clamp(48px,7vw,96px);max-width:660px}
.hero-copy h1{color:var(--paper);margin-top:22px}
.hero-copy h1 em{font-style:normal;color:var(--volt)}
.hero-sub{
  margin-top:22px;font-size:clamp(15px,1.5vw,18px);line-height:1.85;
  color:rgba(246,246,243,.72);max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-info{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(246,246,243,.16);
  display:flex;flex-wrap:wrap;gap:12px 32px;font-size:14px;color:rgba(246,246,243,.7);
}
.hero-info span{display:inline-flex;align-items:center;gap:8px}
.hero-info b{color:var(--volt);font-weight:600}
.hero-visual{
  position:relative;min-height:420px;
  margin-right:calc(-1 * (var(--pad) + max(0px,(100vw - 1240px) / 2)));
  border-top-left-radius:var(--r-card);
  overflow:hidden;background:var(--ink-2);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,17,20,.32) 0%,rgba(15,17,20,.62) 100%);
}
.hero-tag{
  position:absolute;z-index:2;left:26px;bottom:26px;right:26px;
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.hero-tag .fig{font-family:var(--font-num);font-size:44px;font-weight:700;line-height:1;color:var(--volt)}
.hero-tag .cap{font-size:13px;color:rgba(246,246,243,.78);letter-spacing:.04em}
.hero-tag .frame{
  border:1px solid rgba(214,255,59,.5);border-radius:var(--r-tag);
  padding:8px 14px;font-size:13px;color:var(--volt);background:rgba(15,17,20,.45);
}

/* 数据条 */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:38px 0;padding-right:24px}
.stat + .stat{padding-left:32px;border-left:1px solid var(--line)}
.stat .v{font-family:var(--font-num);font-size:clamp(32px,4vw,50px);font-weight:700;line-height:1;letter-spacing:.01em}
.stat .v small{font-size:.45em;margin-left:2px;font-weight:600}
.stat .k{font-size:13px;color:var(--muted);margin-top:12px;letter-spacing:.04em}

/* 通用板块 */
.section{padding:clamp(52px,8vw,104px) 0}
.section-tight{padding:clamp(44px,6vw,80px) 0}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  flex-wrap:wrap;padding-bottom:26px;border-bottom:1px solid var(--line);
}
.sec-head h2{margin-top:14px;max-width:720px}
.sec-head p{color:var(--muted);font-size:15px;margin-top:12px;max-width:640px}
.deep{background:var(--deep);color:var(--paper)}
.deep .eyebrow{color:rgba(246,246,243,.62)}
.deep .sec-head{border-bottom-color:rgba(246,246,243,.16)}
.deep .sec-head p{color:rgba(246,246,243,.7)}
.dark{background:var(--ink);color:var(--paper)}
.dark .sec-head{border-bottom-color:rgba(246,246,243,.16)}
.dark .eyebrow{color:rgba(246,246,243,.6)}

/* 时间线 */
.timeline{margin-top:46px;position:relative}
.tl-item{
  display:grid;grid-template-columns:118px 1fr;gap:clamp(18px,3vw,40px);
  padding:22px 0;position:relative;
}
.tl-item::before{
  content:"";position:absolute;left:117px;top:0;bottom:0;width:2px;background:var(--line);
}
.tl-item:first-child::before{top:34px}
.tl-item:last-child::before{bottom:calc(100% - 34px)}
.tl-time{
  font-family:var(--font-num);font-size:24px;font-weight:600;line-height:1;
  padding-top:8px;color:var(--ink);
}
.tl-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,17,20,.2)}
.tl-card::before{
  content:"";position:absolute;left:-49px;top:26px;width:12px;height:12px;
  border-radius:50%;background:var(--volt);border:3px solid var(--paper);
  box-shadow:0 0 0 2px var(--volt);
}
.tl-card.is-now::before{animation:pulse 1.6s var(--ease) 1}
@keyframes pulse{0%{box-shadow:0 0 0 2px var(--volt),0 0 0 0 rgba(214,255,59,.6)}100%{box-shadow:0 0 0 2px var(--volt),0 0 0 16px rgba(214,255,59,0)}}
.tl-card .row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.tl-card h3{margin-top:10px}
.tl-card p{color:var(--muted);font-size:14.5px;margin-top:8px}
.tl-card .guest{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);display:flex;gap:10px;align-items:center;
}
.tl-card .guest b{color:var(--ink);font-weight:600}

/* 亮点错位网格 */
.hl-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:22px;margin-top:46px}
.hl-card{
  background:rgba(246,246,243,.06);border:1px solid rgba(246,246,243,.14);
  border-radius:var(--r-card);padding:22px;display:flex;gap:20px;align-items:center;
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.hl-card:hover{transform:translateY(-2px);background:rgba(246,246,243,.1)}
.hl-card .pic{width:118px;flex-shrink:0;aspect-ratio:4/5;border-radius:var(--r-img);overflow:hidden;background:var(--ink-2);position:relative}
.hl-card .pic img{width:100%;height:100%;object-fit:cover}
.hl-card .pic::before{content:"";position:absolute;inset:0;border:1px solid rgba(214,255,59,.35);border-radius:var(--r-img)}
.hl-card h3{color:var(--paper);font-size:19px}
.hl-card .role{font-size:13px;color:rgba(246,246,243,.66);margin-top:6px}
.hl-card .tagline{margin-top:12px}
.hl-a{grid-column:1/8}
.hl-b{grid-column:8/13}
.hl-c{grid-column:1/6}
.hl-d{grid-column:6/13}

/* 票种矩阵 */
.matrix-wrap{margin-top:44px;overflow-x:auto}
.matrix{min-width:760px}
.m-row{
  display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;align-items:center;
  border-bottom:1px solid var(--line);
}
.m-cell{padding:20px 18px;font-size:14.5px}
.m-head .m-cell{padding-top:0;padding-bottom:18px;border-bottom:1px solid var(--ink)}
.m-head .tname{font-size:17px;font-weight:700}
.m-head .tprice{font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;margin-top:10px}
.m-head .tprice small{font-size:15px;font-weight:500;margin-left:2px}
.m-head .tnote{font-size:12.5px;color:var(--muted);margin-top:8px}
.m-head .m-cell.col-featured{
  background:var(--card);border-top:3px solid var(--volt);
  border-bottom:0;border-radius:var(--r-card) var(--r-card) 0 0;
  transform:translateY(-8px);box-shadow:var(--sh-1);position:relative;
}
.m-head .m-cell.col-featured .tag{
  position:absolute;top:-13px;left:18px;background:var(--volt);color:var(--ink);
  font-size:12px;font-weight:700;padding:3px 10px;border-radius:var(--r-tag);
}
.m-row .m-cell.col-featured{background:var(--card);box-shadow:var(--sh-1)}
.m-cell.c{text-align:center}
.m-row.head-labels .m-cell{font-size:13px;color:var(--muted);letter-spacing:.04em;padding-top:26px}
.m-label{color:var(--ink-2);font-weight:500}
.mark{font-size:15px;font-weight:700}
.mark.on{color:var(--ink)}
.mark.off{color:#C7C9C4}
.ticket-cards{display:none;margin-top:34px;gap:18px;grid-template-columns:1fr}

/* 资讯列表 */
.news-grid{margin-top:44px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-1);border-color:rgba(15,17,20,.2)}
.news-card.big{grid-column:span 2;flex-direction:row}
.news-card.big .media{width:50%;aspect-ratio:auto;border-radius:0}
.news-card.big .nc-body{padding:28px}
.nc-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.nc-body h3{font-size:18px}
.news-card.big .nc-body h3{font-size:23px}
.nc-body p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nc-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line)}
.empty-state{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;background:var(--card);
}
.empty-state .frame{
  width:96px;height:64px;margin:0 auto 20px;border:1px solid var(--line);
  border-radius:10px;position:relative;
}
.empty-state .frame::before,.empty-state .frame::after{
  content:"";position:absolute;background:var(--line);
}
.empty-state .frame::before{left:0;right:0;top:50%;height:1px}
.empty-state .frame::after{top:0;bottom:0;left:50%;width:1px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:clamp(24px,4vw,64px)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:22px 0;font-size:16.5px;font-weight:500;transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--font-num);font-size:26px;line-height:1;color:var(--muted);
  transition:transform .24s var(--ease),color .24s var(--ease);flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--ink)}
.faq-item summary:hover{color:var(--ink-2)}
.faq-item .a{padding:0 0 24px;color:var(--muted);font-size:15px;max-width:680px}

/* 报名 CTA */
.signup{background:var(--ink);color:var(--paper);padding:clamp(56px,8vw,104px) 0}
.signup-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:clamp(28px,4vw,64px);align-items:start}
.signup-copy h2{color:var(--paper)}
.signup-copy ul{margin-top:26px;display:flex;flex-direction:column;gap:0}
.signup-copy li{
  display:flex;gap:14px;align-items:flex-start;padding:16px 0;
  border-bottom:1px solid rgba(246,246,243,.14);font-size:15px;color:rgba(246,246,243,.78);
}
.signup-copy li b{color:var(--volt);font-weight:700;flex-shrink:0;font-size:14px;letter-spacing:.04em}
.form-card{
  background:var(--card);color:var(--ink);border-radius:var(--r-card);
  padding:clamp(24px,3vw,36px);box-shadow:var(--sh-2);
}
.form-card h3{font-size:20px}
.form-card .sub{color:var(--muted);font-size:13.5px;margin-top:8px}
.field{margin-top:24px}
.field label{display:block;font-size:13px;color:var(--muted);letter-spacing:.04em;margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:9px 0;font-size:15px;outline:none;border-radius:0;
  transition:border-color .2s var(--ease);appearance:none;
}
.field textarea{resize:vertical;min-height:64px}
.field input:focus,.field select:focus,.field textarea:focus{border-bottom-color:var(--ink)}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--ink) 50%),linear-gradient(135deg,var(--ink) 50%,transparent 50%);
  background-position:calc(100% - 12px) calc(50% + 2px),calc(100% - 7px) calc(50% + 2px);
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;
}
.field.err input,.field.err select{border-bottom-color:var(--err)}
.field .msg{font-size:12.5px;color:var(--err);margin-top:6px;display:none}
.field.err .msg{display:block}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:0 22px}
.agree{display:flex;gap:10px;align-items:flex-start;margin-top:26px;font-size:13px;color:var(--muted);line-height:1.7}
.agree input{width:16px;height:16px;margin-top:4px;accent-color:var(--ink);flex-shrink:0}
.form-actions{margin-top:28px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-actions .btn{flex:1;min-width:180px}
.form-note{font-size:12.5px;color:var(--muted)}
.alert-ok{
  display:none;margin-top:22px;background:var(--volt);color:var(--ink);
  border-radius:var(--r-tag);padding:12px 16px;font-size:14px;font-weight:600;
}
.alert-ok.is-on{display:block}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--paper);padding-top:clamp(48px,6vw,80px)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:clamp(24px,3vw,48px);padding-bottom:52px}
.foot-brand .logo-text b{color:var(--paper);font-size:18px}
.foot-brand .logo-text span{color:rgba(246,246,243,.55)}
.foot-brand p{margin-top:20px;font-size:14px;color:rgba(246,246,243,.66);max-width:300px}
.foot-col h4{font-size:13px;letter-spacing:.1em;color:rgba(246,246,243,.5);font-weight:700;margin-bottom:18px}
.foot-col li{margin-bottom:12px}
.foot-col a,.foot-col span{font-size:14.5px;color:rgba(246,246,243,.8);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.foot-col a:hover{color:var(--volt);transform:translateX(2px)}
.foot-bottom{
  border-top:1px solid rgba(246,246,243,.14);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,246,243,.55);
}
.foot-bottom .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--volt);margin-right:8px;vertical-align:middle}

/* 动效 */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .42s var(--ease),transform .42s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* 响应式 */
@media (max-width:1199px){
  .hero-visual{margin-right:calc(-1 * var(--pad))}
  .hl-a,.hl-b,.hl-c,.hl-d{grid-column:span 6}
  .news-card.big{grid-column:span 3;flex-direction:column}
  .news-card.big .media{width:100%;aspect-ratio:16/10}
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-right .icon-btn{display:none}
  .burger{display:inline-flex}
  .nav-cta{display:none}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{margin-right:calc(-1 * var(--pad));min-height:320px;aspect-ratio:16/10;order:-1;margin-bottom:36px}
  .hero-copy{padding-bottom:56px;max-width:none}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{padding:28px 0;padding-right:20px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line)}
  .stat:nth-child(odd){padding-left:0}
  .tl-item{grid-template-columns:96px 1fr;gap:18px}
  .tl-item::before{left:95px}
  .tl-card::before{left:-41px}
  .hl-a,.hl-b,.hl-c,.hl-d{grid-column:span 12}
  .matrix{display:none}
  .ticket-cards{display:grid}
  .signup-grid{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .news-grid{grid-template-columns:1fr}
  .news-card.big{grid-column:span 1}
  .hl-card{flex-direction:column;align-items:flex-start}
  .hl-card .pic{width:100%;aspect-ratio:16/10}
  .grid-2{grid-template-columns:1fr}
  .tl-item{grid-template-columns:1fr;gap:10px}
  .tl-item::before{display:none}
  .tl-card::before{display:none}
  .tl-time{font-size:20px;padding-top:0;color:var(--muted)}
  .section,.section-tight{padding-left:0;padding-right:0}
}
@media (max-width:559px){
  .stats-grid{grid-template-columns:1fr}
  .stat{border-left:0!important;padding-left:0!important}
  .stat + .stat{border-top:1px solid var(--line)}
  .foot-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .sec-head{flex-direction:column;align-items:flex-start}
}
.ticket-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);padding:22px;position:relative;
}
.ticket-card.featured{border-top:3px solid var(--volt);box-shadow:var(--sh-1)}
.ticket-card .tprice{font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;margin-top:10px}
.ticket-card ul{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}
.ticket-card li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;font-size:14px;color:var(--muted);border-bottom:1px solid var(--line)}
.ticket-card li:last-child{border-bottom:0}
.ticket-card li b{color:var(--ink);font-weight:600}

/* roulang page: article */
:root{
  --ink:#0F1114;
  --ink-2:#22262C;
  --deep:#0E3B34;
  --muted:#6E737B;
  --paper:#F6F6F3;
  --card:#FFFFFF;
  --line:#E3E4E0;
  --volt:#D6FF3B;
  --flare:#FF5A3C;
  --ok:#1FA971;
  --warn:#E8A33D;
  --err:#D9453C;
  --r-card:16px;
  --r-img:12px;
  --r-tag:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,17,20,.04),0 8px 24px rgba(15,17,20,.06);
  --sh-2:0 12px 32px rgba(15,17,20,.10);
  --w:1240px;
  --pad-x:clamp(20px,4vw,48px);
  --sec-y:clamp(44px,7vw,104px);
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"Oswald","Barlow Condensed","Arial Narrow","Helvetica Neue",var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-cn);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 var(--pad-x)}
.num{font-family:var(--font-num);letter-spacing:.01em}
.sec{padding:var(--sec-y) 0}
.sec-line{border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.sec-head h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.2;letter-spacing:-.01em}
.sec-head p{color:var(--muted);font-size:14px;max-width:560px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--volt)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-pill);border:1px solid transparent;padding:12px 24px;font-size:15px;font-weight:600;cursor:pointer;transition:background .22s,color .22s,border-color .22s,transform .16s,box-shadow .22s;background:none}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--volt);color:var(--ink);box-shadow:var(--sh-2)}
.btn-primary .arw{transition:transform .22s}
.btn-primary:hover .arw{transform:translateX(4px)}
.btn-outline{border-color:currentColor;color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-volt{background:var(--volt);color:var(--ink)}
.btn-volt:hover{background:var(--ink);color:var(--volt)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;border-bottom:1px solid currentColor;padding-bottom:2px;transition:color .22s,gap .22s}
.link-arrow:hover{color:var(--ink);gap:10px}

/* ---------- badges / tags ---------- */
.badge{display:inline-flex;align-items:center;font-size:12px;letter-spacing:.08em;border-radius:var(--r-tag);padding:4px 10px;font-weight:700}
.badge-volt{background:var(--volt);color:var(--ink)}
.badge-ink{background:var(--ink);color:var(--volt)}
.badge-line{border:1px solid var(--line);color:var(--muted);background:transparent}
.tag{display:inline-flex;align-items:center;font-size:13px;border:1px solid var(--line);border-radius:var(--r-tag);padding:5px 12px;color:var(--ink-2);background:var(--card);transition:border-color .22s,background .22s}
.tag:hover{border-color:var(--ink);background:var(--paper)}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:90;color:var(--paper);border-bottom:1px solid transparent;transition:background .3s,color .3s,border-color .3s,box-shadow .3s}
.site-header.is-scrolled{background:rgba(246,246,243,.95);backdrop-filter:blur(6px);color:var(--ink);border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(15,17,20,.03)}
.header-inner{display:flex;align-items:center;height:64px;gap:clamp(16px,3vw,40px)}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:32px;height:24px;color:var(--volt);flex:none}
.site-header.is-scrolled .logo-mark{color:var(--ink)}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:800;letter-spacing:-.01em}
.logo-text span{font-size:11px;letter-spacing:.14em;opacity:.62}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2vw,28px)}
.nav-links a{position:relative;font-size:15px;padding:6px 2px;opacity:.8;transition:opacity .22s}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--volt);transform:scaleX(0);transform-origin:left;transition:transform .22s}
.nav-links a:hover{opacity:1}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{opacity:1}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{display:inline-flex;align-items:center;gap:6px;background:none;border:1px solid transparent;border-radius:var(--r-pill);padding:8px 14px;font-size:14px;cursor:pointer;color:inherit;transition:border-color .22s,background .22s}
.icon-btn:hover{border-color:currentColor}
.burger{display:none;width:42px;height:42px;border:1px solid currentColor;border-radius:var(--r-pill);background:none;cursor:pointer;position:relative}
.burger span{position:absolute;left:12px;right:12px;height:1.6px;background:currentColor;transition:.24s}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:20px}
.burger span:nth-child(3){top:25px}
.burger.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* drawer */
.drawer{position:fixed;inset:0;z-index:120;background:var(--paper);color:var(--ink);transform:translateX(100%);transition:transform .32s cubic-bezier(.22,.61,.36,1);display:flex;flex-direction:column;padding:20px var(--pad-x) 28px;visibility:hidden}
.drawer.is-open{transform:none;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line)}
.drawer-nav{display:flex;flex-direction:column;margin-top:16px}
.drawer-nav a{padding:18px 0;border-bottom:1px solid var(--line);font-size:18px;font-weight:600}
.drawer-nav a.is-active{color:var(--ink);box-shadow:inset 3px 0 0 var(--volt);padding-left:12px}
.drawer-cta{margin-top:auto;justify-content:center;width:100%}
.drawer-close{background:none;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;cursor:pointer}

/* search layer */
.search-layer{position:fixed;inset:0;z-index:130;background:rgba(15,17,20,.96);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .28s,visibility .28s}
.search-layer.is-open{opacity:1;visibility:visible}
.search-form{width:min(720px,88vw);display:flex;gap:16px;align-items:center;border-bottom:1px solid rgba(246,246,243,.35);padding-bottom:12px}
.search-form input{flex:1;background:none;border:0;border-bottom:1px solid transparent;color:var(--paper);font-size:clamp(18px,2.6vw,26px);padding:8px 0;transition:border-color .2s}
.search-form input::placeholder{color:rgba(246,246,243,.45)}
.search-form input:focus{outline:none;border-bottom-color:var(--volt)}
.search-close{position:absolute;top:28px;right:var(--pad-x);background:none;border:1px solid rgba(246,246,243,.4);color:var(--paper);border-radius:var(--r-pill);padding:8px 18px;cursor:pointer;transition:background .22s,color .22s}
.search-close:hover{background:var(--volt);color:var(--ink);border-color:var(--volt)}

/* ---------- article hero ---------- */
.article-hero{position:relative;background:var(--ink) url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:var(--paper);padding:calc(64px + 52px) 0 56px;overflow:hidden}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,17,20,.82),rgba(15,17,20,.72));pointer-events:none}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(246,246,243,.66);flex-wrap:wrap;margin-bottom:22px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--volt)}
.breadcrumb .current{color:var(--paper);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-flags{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.hero-flags .cat-name{font-size:13px;letter-spacing:.08em;color:rgba(246,246,243,.7)}
.article-hero h1{font-size:clamp(30px,4.4vw,56px);font-weight:800;line-height:1.12;letter-spacing:-.02em;max-width:22ch}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:26px;padding-top:20px;border-top:1px solid rgba(246,246,243,.18);font-size:13.5px;color:rgba(246,246,243,.72)}
.article-meta .num{font-size:14px;color:var(--paper)}
.article-meta .dotsep{width:4px;height:4px;border-radius:50%;background:var(--volt)}

/* ---------- article body ---------- */
.article-main{padding:clamp(36px,5vw,72px) 0 var(--sec-y)}
.article-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:clamp(24px,4vw,56px)}
.article-body{max-width:760px;margin:0 auto;color:var(--ink-2);font-size:16px;line-height:1.85}
.article-body>*+*{margin-top:1.2em}
.article-body p{margin:0 0 1.2em}
.article-body h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--ink);line-height:1.35;margin:2em 0 .9em;padding-left:16px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;background:var(--volt);border-radius:2px}
.article-body h3{font-size:20px;font-weight:700;color:var(--ink);margin:1.7em 0 .7em;line-height:1.4}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em}
.article-body ul{list-style:none}
.article-body ul li{position:relative;padding-left:16px;margin-bottom:.6em}
.article-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--ink);border-radius:50%}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:.6em}
.article-body blockquote{margin:1.6em 0;padding:18px 22px;background:var(--paper);border-left:3px solid var(--volt);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--ink-2)}
.article-body img{border-radius:var(--r-img);aspect-ratio:16/10;object-fit:cover;width:100%;height:auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body a{color:var(--ink);border-bottom:1px solid var(--volt);transition:background .2s}
.article-body a:hover{background:var(--volt)}
.article-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;font-size:14.5px;border:1px solid var(--line);border-radius:var(--r-img)}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.article-body th{background:var(--paper);font-weight:700;color:var(--ink)}
.article-body code{background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:2px 6px;font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

.article-foot{margin-top:clamp(28px,4vw,48px);padding-top:24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.tag-row{display:flex;gap:10px;flex-wrap:wrap}
.article-empty{max-width:640px;margin:0 auto;text-align:center;padding:clamp(20px,4vw,44px) 0}
.article-empty h2{font-size:26px;font-weight:800;margin-bottom:14px}
.article-empty p{color:var(--muted);margin-bottom:26px}
.empty-frame{width:120px;height:76px;margin:0 auto 24px;border:1px solid var(--line);border-radius:var(--r-img);background:var(--ink);position:relative;overflow:hidden}
.empty-frame::before,.empty-frame::after{content:"";position:absolute;background:var(--volt)}
.empty-frame::before{left:14px;right:14px;height:1.5px;top:36px}
.empty-frame::after{left:14px;width:38px;height:1.5px;top:50px}

/* ---------- related ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card-grid .card:nth-child(1){grid-column:span 1}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .22s,box-shadow .22s,border-color .22s}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,17,20,.2)}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-cover img{transform:scale(1.03)}
.card-cover .badge{position:absolute;left:14px;top:14px}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:700;line-height:1.4;color:var(--ink)}
.card-body p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:10px}
.img-fallback{background:var(--ink);display:flex;align-items:center;justify-content:center;color:var(--volt)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:clamp(28px,5vw,72px);align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;font-size:16.5px;font-weight:600;color:var(--ink);transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--deep)}
.faq-item summary::after{content:"+";font-family:var(--font-num);font-size:22px;color:var(--muted);transition:transform .26s,color .26s}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--ink)}
.faq-item p{padding:0 0 22px;color:var(--muted);font-size:15px;max-width:60ch}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:var(--paper);border-radius:var(--r-card);padding:clamp(28px,5vw,64px);display:grid;grid-template-columns:7fr 5fr;gap:clamp(24px,4vw,56px);align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border:1px solid rgba(214,255,59,.28);border-radius:50%;pointer-events:none}
.cta-band h2{font-size:clamp(24px,3vw,38px);font-weight:800;line-height:1.22;letter-spacing:-.01em}
.cta-band p{color:rgba(246,246,243,.72);margin-top:14px;font-size:15px;max-width:46ch}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:22px}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:rgba(246,246,243,.82)}
.cta-points li::before{content:"";width:14px;height:2px;background:var(--volt);margin-top:12px;flex:none}
.cta-side{display:flex;flex-direction:column;gap:14px;position:relative;z-index:2}
.cta-side .btn{justify-content:center}
.cta-note{font-size:13px;color:rgba(246,246,243,.6)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(246,246,243,.78);padding:clamp(44px,6vw,80px) 0 0;margin-top:var(--sec-y)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:clamp(24px,4vw,56px)}
.foot-brand .logo-text b{color:var(--paper);font-size:18px;font-weight:800;display:block}
.foot-brand .logo-text span{font-size:11px;letter-spacing:.14em;color:rgba(246,246,243,.5);display:block;margin-top:4px}
.foot-brand p{margin-top:16px;font-size:14px;color:rgba(246,246,243,.6);max-width:34ch}
.foot-col h4{font-size:13px;letter-spacing:.08em;color:var(--paper);margin-bottom:16px;font-weight:700}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a,.foot-col span{font-size:14px;color:rgba(246,246,243,.72);transition:color .2s,transform .2s;display:inline-block}
.foot-col a:hover{color:var(--volt);transform:translateX(2px)}
.foot-bottom{margin-top:clamp(32px,5vw,56px);border-top:1px solid rgba(246,246,243,.14);padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(246,246,243,.55)}
.foot-bottom .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--volt);margin-right:8px;vertical-align:middle}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}
.skeleton{background:linear-gradient(90deg,#EDEEE9 25%,#F6F6F3 37%,#EDEEE9 63%);background-size:400% 100%;animation:sk 1.4s ease infinite}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .burger{display:block}
  .header-actions .btn-primary{display:none}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .cta-band{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .article-hero{padding:calc(56px + 34px) 0 40px}
  .article-hero h1{max-width:none}
  .article-card{padding:22px 18px}
  .card-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .logo-text b{font-size:14.5px}
  .logo-text span{display:none}
  .header-inner{height:56px}
  .article-meta{gap:10px}
  .article-meta .dotsep{display:none}
  .btn{padding:11px 18px;font-size:14px}
}

/* roulang page: category1 */
:root{
  --ink:#0F1114;
  --ink-2:#22262C;
  --deep:#0E3B34;
  --muted:#6E737B;
  --paper:#F6F6F3;
  --card:#FFFFFF;
  --line:#E3E4E0;
  --volt:#D6FF3B;
  --flare:#FF5A3C;
  --ok:#1FA971;
  --warn:#E8A33D;
  --err:#D9453C;
  --r-card:16px;
  --r-img:12px;
  --r-tag:6px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(15,17,20,.04),0 8px 24px rgba(15,17,20,.06);
  --sh-2:0 12px 32px rgba(15,17,20,.10);
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --cond:"Oswald","Barlow Condensed","Arial Narrow","HarmonyOS Sans SC","PingFang SC",system-ui,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--volt);color:var(--ink)}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 clamp(20px,4vw,48px);
}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--nav-h);
  z-index:90;
  color:var(--paper);
  transition:background .28s var(--ease),color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:transparent;
  transition:background .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,246,243,.95);
  color:var(--ink);
  box-shadow:0 1px 0 rgba(15,17,20,.03);
  backdrop-filter:blur(6px);
}
.site-header.is-scrolled::after{background:var(--line)}
.header-inner{
  height:100%;max-width:1240px;margin:0 auto;
  padding:0 clamp(20px,4vw,48px);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.header-cluster{display:flex;align-items:center;gap:34px;min-width:0}
.header-cluster--right{gap:14px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:34px;height:22px;display:grid;place-items:center;color:var(--volt)}
.logo-mark svg{width:100%;height:100%;display:block}
.logo-text b{
  display:block;font-size:15px;font-weight:800;letter-spacing:.01em;line-height:1.15;white-space:nowrap;
}
.logo-text i,.logo-text span{
  display:block;font-style:normal;font-size:11px;letter-spacing:.18em;line-height:1.2;opacity:.62;margin-top:2px;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;
  opacity:.82;transition:opacity .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover,.nav-links a:focus-visible{opacity:1}
.nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1)}
.nav-links a.is-active{opacity:1;font-weight:700}
.nav-links a.is-active::after{transform:scaleX(1)}
.icon-btn{
  width:36px;height:36px;border:1px solid currentColor;border-radius:999px;
  display:grid;place-items:center;opacity:.78;
  transition:opacity .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{opacity:1;background:rgba(214,255,59,.18)}
.icon-btn svg{width:16px;height:16px;display:block}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.01em;
  transition:background .22s var(--ease),color .22s var(--ease),transform .12s var(--ease),border-color .22s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--volt);color:var(--ink)}
.btn-primary .arrow{transition:transform .22s var(--ease)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-head{
  padding:9px 20px;font-size:14px;background:var(--paper);color:var(--ink);
}
.btn-head:hover{background:var(--volt);color:var(--ink)}
.site-header.is-scrolled .btn-head{background:var(--ink);color:var(--paper)}
.site-header.is-scrolled .btn-head:hover{background:var(--volt);color:var(--ink)}
.menu-toggle{
  display:none;width:36px;height:36px;border:1px solid currentColor;border-radius:999px;
  align-items:center;justify-content:center;opacity:.82;
}
.menu-toggle:hover{opacity:1}
.menu-toggle span{display:block;width:16px;height:1.6px;background:currentColor;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:currentColor;
}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

/* ---------- drawer & search ---------- */
.drawer{
  position:fixed;inset:0;z-index:110;background:var(--ink);color:var(--paper);
  padding:20px clamp(20px,5vw,32px) 32px;
  display:flex;flex-direction:column;
  transform:translateY(-102%);transition:transform .36s var(--ease);
}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);margin-bottom:24px}
.drawer-head .logo-text b{color:var(--paper)}
.drawer-close,.search-close{
  width:38px;height:38px;border:1px solid rgba(246,246,243,.32);border-radius:999px;
  display:grid;place-items:center;font-size:18px;line-height:1;color:var(--paper);
}
.drawer-close:hover,.search-close:hover{background:var(--volt);color:var(--ink);border-color:var(--volt)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-nav a{
  padding:16px 4px;font-size:19px;font-weight:600;
  border-bottom:1px solid rgba(246,246,243,.12);
}
.drawer-nav a.is-active{color:var(--volt)}
.drawer-cta{margin-top:28px;width:100%}
.search-layer{
  position:fixed;inset:0;z-index:115;background:rgba(15,17,20,.97);color:var(--paper);
  display:flex;align-items:center;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;
}
.search-layer.is-open{opacity:1;visibility:visible}
.search-inner{width:100%;max-width:680px;position:relative}
.search-layer .search-close{position:absolute;top:-72px;right:0}
.search-form label{display:block;font-size:13px;letter-spacing:.16em;color:rgba(246,246,243,.6);margin-bottom:16px}
.search-form input{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(246,246,243,.34);
  padding:12px 2px;font-size:20px;color:var(--paper);
  transition:border-color .2s var(--ease);
}
.search-form input::placeholder{color:rgba(246,246,243,.38)}
.search-form input:focus{outline:none;border-bottom-color:var(--volt)}
.search-form .btn{margin-top:26px}
.search-hint{margin-top:22px;font-size:13px;color:rgba(246,246,243,.5)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--ink);color:var(--paper);
  padding:calc(var(--nav-h) + 64px) 0 64px;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;opacity:.55;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,17,20,.95) 0%,rgba(15,17,20,.8) 48%,rgba(15,17,20,.42) 100%);
}
.hero-inner{position:relative;z-index:2}
.hero-copy{max-width:860px}
.crumbs{
  display:flex;align-items:center;gap:8px;font-size:13px;
  color:rgba(246,246,243,.62);margin-bottom:24px;
}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--volt)}
.crumbs .sep{opacity:.5}
.crumbs .crumb-current{color:var(--paper)}
.tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  padding:5px 12px;border-radius:var(--r-tag);line-height:1.5;
}
.tag--volt{background:var(--volt);color:var(--ink)}
.tag--ghost{border:1px solid rgba(246,246,243,.34);color:var(--paper)}
.page-hero h1{
  margin:20px 0 0;
  font-size:clamp(30px,4.6vw,54px);
  font-weight:800;line-height:1.1;letter-spacing:-.02em;
}
.hero-lead{
  margin-top:18px;max-width:620px;font-size:17px;line-height:1.8;
  color:rgba(246,246,243,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.btn-on-dark{background:var(--volt);color:var(--ink)}
.btn-on-dark:hover{background:var(--paper);color:var(--ink)}
.btn-ghost-light{border:1px solid rgba(246,246,243,.42);color:var(--paper)}
.btn-ghost-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.hero-facts{
  display:flex;flex-wrap:wrap;margin-top:46px;
  border-top:1px solid rgba(246,246,243,.18);padding-top:28px;
}
.fact{flex:1 1 190px;padding:0 28px;border-right:1px solid rgba(246,246,243,.14)}
.fact:first-child{padding-left:0}
.fact:last-child{border-right:0;padding-right:0}
.fact b{
  display:block;font-family:var(--cond);font-size:clamp(30px,3.4vw,40px);
  font-weight:700;line-height:1;letter-spacing:.01em;color:var(--volt);
}
.fact span{display:block;margin-top:10px;font-size:13px;color:rgba(246,246,243,.6)}

/* ---------- layout ---------- */
.layout{
  display:grid;grid-template-columns:220px minmax(0,1fr);
  gap:clamp(32px,5vw,64px);
  padding-top:80px;padding-bottom:0;
}
.anchor-nav{position:sticky;top:calc(var(--nav-h) + 32px);align-self:start}
.anchor-title{
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--muted);
  margin-bottom:16px;
}
.anchor-nav ul{border-left:1px solid var(--line)}
.anchor-nav a{
  display:block;margin-left:-1px;padding:12px 0 12px 18px;
  border-left:3px solid transparent;
  font-size:14px;color:var(--muted);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.anchor-nav a:hover{color:var(--ink);background:rgba(255,255,255,.7)}
.anchor-nav a.is-active{color:var(--ink);font-weight:700;border-left-color:var(--volt)}
.content-col{min-width:0}

/* ---------- sections ---------- */
.sec{padding:80px 0;border-top:1px solid var(--line);scroll-margin-top:calc(var(--nav-h) + 80px)}
.sec:first-child{border-top:0;padding-top:0}
.split{
  display:grid;grid-template-columns:5fr 7fr;
  gap:clamp(24px,4vw,56px);align-items:center;
}
.split--rev{grid-template-columns:7fr 5fr}
.media{
  position:relative;overflow:hidden;border-radius:var(--r-img);
  background:var(--ink);aspect-ratio:16/10;
  box-shadow:var(--sh-1);
}
.media img{width:100%;height:100%;object-fit:cover}
.media.is-empty::after{
  content:"";position:absolute;inset:16px;border:1px dashed rgba(214,255,59,.6);border-radius:8px;
}
.media.is-empty::before{
  content:"";position:absolute;left:50%;top:50%;width:64px;height:64px;
  transform:translate(-50%,-50%) rotate(45deg);
  border:1px solid rgba(214,255,59,.45);border-radius:6px;
}
.copy{max-width:640px}
.sec-index{
  display:block;font-family:var(--cond);font-size:13px;font-weight:600;
  letter-spacing:.24em;color:var(--muted);
}
.copy h2{
  margin:12px 0 18px;
  font-size:clamp(24px,2.7vw,34px);font-weight:700;line-height:1.22;letter-spacing:-.01em;
}
.copy p{color:var(--ink-2)}
.copy p + p{margin-top:14px}
.check-list{margin-top:26px;border-top:1px solid var(--line)}
.check-list li{
  position:relative;padding:15px 0 15px 24px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-2);line-height:1.7;
  transition:background .2s var(--ease),padding-left .2s var(--ease);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:24px;width:9px;height:9px;
  border-radius:2px;background:var(--volt);
}
.check-list li:hover{background:var(--card);padding-left:30px}
.note{margin-top:22px;font-size:13px;color:var(--muted)}
.note a{
  color:var(--ink);border-bottom:1px solid var(--line);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.note a:hover{border-color:var(--volt)}

/* ---------- timeline ---------- */
.timeline{margin-top:24px}
.timeline li{
  display:grid;grid-template-columns:120px 1fr;gap:20px;align-items:start;
  padding:16px 0;border-top:1px solid var(--line);
}
.timeline li:last-child{border-bottom:1px solid var(--line)}
.timeline .t-time{
  font-family:var(--cond);font-size:15px;font-weight:600;letter-spacing:.04em;
  color:var(--ink);padding-top:2px;
}
.timeline .t-time::before{
  content:"";display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--volt);margin-right:10px;vertical-align:middle;
}
.timeline .t-body b{display:block;font-size:15px;font-weight:700;color:var(--ink)}
.timeline .t-body span{display:block;margin-top:4px;font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  font-size:13px;font-weight:600;padding:7px 14px;border-radius:var(--r-tag);
  background:var(--card);border:1px solid var(--line);color:var(--ink-2);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{border-color:var(--ink);background:var(--paper)}
.chip--ink{background:var(--ink);color:var(--volt);border-color:var(--ink)}

/* ---------- cta band ---------- */
.cta-band{background:var(--deep);color:var(--paper);padding:72px 0;margin-top:88px}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-text{max-width:640px}
.cta-text h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.24;letter-spacing:-.01em}
.cta-text p{margin-top:14px;font-size:15px;color:rgba(246,246,243,.72);line-height:1.8}
.cta-band .btn-on-dark:hover{background:var(--volt);color:var(--ink)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);color:rgba(246,246,243,.72);
  padding:72px 0 0;font-size:14px;line-height:1.8;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand .logo-text b{color:var(--paper);font-size:16px;letter-spacing:.01em}
.foot-brand .logo-text span{display:block;font-size:11px;letter-spacing:.18em;opacity:.6;margin-top:4px}
.foot-brand p{margin-top:18px;max-width:320px;color:rgba(246,246,243,.66)}
.foot-col h4{
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--paper);
  margin-bottom:18px;
}
.foot-col li{margin-bottom:12px}
.foot-col a,.foot-col span{display:inline-block;color:rgba(246,246,243,.7);transition:color .2s var(--ease),transform .2s var(--ease)}
.foot-col a:hover{color:var(--volt);transform:translateX(2px)}
.foot-bottom{
  margin-top:60px;border-top:1px solid rgba(246,246,243,.14);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13px;color:rgba(246,246,243,.6);
}
.dot{
  display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--volt);margin-right:8px;vertical-align:middle;
}

/* ---------- reveal ---------- */
.reveal-init{opacity:0;transform:translateY(14px)}
.reveal-init.is-in{
  opacity:1;transform:none;
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.split > *:nth-child(2).reveal-init.is-in{transition-delay:.06s}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal-init{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .header-cluster{gap:24px}
  .nav-links{gap:20px}
  .layout{grid-template-columns:200px minmax(0,1fr);gap:40px}
}
@media (max-width:991px){
  :root{--nav-h:56px}
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .btn-head{display:none}
  .page-hero{padding:calc(var(--nav-h) + 48px) 0 52px}
  .hero-bg{opacity:.42}
  .layout{grid-template-columns:1fr;gap:28px;padding-top:40px}
  .anchor-nav{
    position:sticky;top:var(--nav-h);z-index:40;
    background:var(--paper);padding:12px 0 0;
    border-bottom:1px solid var(--line);
  }
  .anchor-title{display:none}
  .anchor-nav ul{
    display:flex;gap:24px;border-left:0;
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  }
  .anchor-nav ul::-webkit-scrollbar{display:none}
  .anchor-nav a{
    margin-left:0;padding:8px 0 12px;white-space:nowrap;
    border-left:0;border-bottom:2px solid transparent;
  }
  .anchor-nav a.is-active{border-left-color:transparent;border-bottom-color:var(--volt)}
  .sec{padding:60px 0;scroll-margin-top:calc(var(--nav-h) + 70px)}
  .split,.split--rev{grid-template-columns:1fr;gap:26px}
  .copy{max-width:none}
  .cta-band{margin-top:60px;padding:56px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .hero-lead{font-size:16px}
  .hero-facts{margin-top:34px;padding-top:22px}
  .fact{flex:1 1 100%;padding:16px 0;border-right:0;border-bottom:1px solid rgba(246,246,243,.14)}
  .fact:first-child{padding-top:0}
  .fact:last-child{border-bottom:0;padding-bottom:0}
  .sec{padding:48px 0}
  .timeline li{grid-template-columns:1fr;gap:6px}
  .cta-inner{gap:24px}
  .cta-band .btn{width:100%}
}
@media (max-width:559px){
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .logo-text b{font-size:14px}
  .logo-text i,.logo-text span{font-size:10px;letter-spacing:.12em}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root{
  --ink:#0F1114;
  --ink-2:#22262C;
  --deep:#0E3B34;
  --muted:#6E737B;
  --paper:#F6F6F3;
  --card:#FFFFFF;
  --line:#E3E4E0;
  --volt:#D6FF3B;
  --flare:#FF5A3C;
  --ok:#1FA971;
  --warn:#E8A33D;
  --err:#D9453C;
  --r-card:16px;
  --r-img:12px;
  --r-tag:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,17,20,.04),0 8px 24px rgba(15,17,20,.06);
  --sh-2:0 12px 32px rgba(15,17,20,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-num:"Oswald","Barlow Condensed","Arial Narrow",system-ui,sans-serif;
  --head-h:64px;
}
/* ========== Reset / Base ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1{font-size:clamp(34px,5.2vw,64px);font-weight:800;letter-spacing:-.02em;line-height:1.08}
h2{font-size:clamp(26px,3vw,38px);font-weight:700;letter-spacing:-.01em;line-height:1.2}
h3{font-size:20px;font-weight:700;line-height:1.35}
.num{font-family:var(--font-num);font-weight:600;letter-spacing:.01em;font-variant-numeric:tabular-nums}
::selection{background:var(--volt);color:var(--ink)}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px;border-radius:4px}
/* ========== 容器 ========== */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
/* ========== 导航 ========== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:var(--head-h);display:flex;align-items:center;
  --head-fg:#F6F6F3;
  --head-line:rgba(246,246,243,.34);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease);
}
.site-header.is-solid{
  --head-fg:#0F1114;
  --head-line:rgba(15,17,20,.34);
  background:rgba(246,246,243,.95);
  border-bottom-color:var(--line);
  backdrop-filter:blur(6px);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-left{display:flex;align-items:center;gap:clamp(20px,3.2vw,46px);min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--head-fg);transition:color .28s var(--ease)}
.logo-mark{width:26px;height:26px;flex:0 0 auto}
.logo-mark path,.logo-mark circle{transition:stroke .28s var(--ease)}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-size:16px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.logo-text span{font-size:11px;letter-spacing:.12em;opacity:.62;font-weight:500}
.nav-links{display:flex;align-items:center;gap:clamp(18px,2.2vw,32px)}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--head-fg);
  padding:4px 0;white-space:nowrap;transition:color .22s var(--ease),opacity .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;
  background:currentColor;transition:width .22s var(--ease);
}
.nav-links a:hover::after,.nav-links a:focus-visible::after{width:100%}
.nav-links a.is-active{font-weight:700}
.nav-links a.is-active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:14px}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);
  border:1px solid var(--head-line);color:var(--head-fg);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.icon-btn:hover{background:var(--head-fg);color:var(--paper);border-color:var(--head-fg)}
.icon-btn svg{width:16px;height:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-size:15px;font-weight:700;
  padding:14px 26px;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed}
.btn-arrow{transition:transform .22s var(--ease)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--volt);color:var(--ink)}
.btn-primary:hover .btn-arrow{transform:translateX(4px)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper)}
.btn-light{background:var(--volt);color:var(--ink)}
.btn-light:hover{background:var(--paper);color:var(--ink)}
.btn-ghost-light{border-color:rgba(246,246,243,.5);color:var(--paper);background:transparent}
.btn-ghost-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-cta{background:var(--volt);color:var(--ink);padding:11px 22px;font-size:14px}
.btn-cta:hover{background:var(--ink);color:var(--paper)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.burger{display:none;width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--head-line);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.burger span{display:block;width:16px;height:2px;background:var(--head-fg);transition:background .28s var(--ease)}
/* 搜索层 */
.search-layer{
  position:fixed;inset:0;z-index:110;background:rgba(15,17,20,.96);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.search-layer.is-open{opacity:1;visibility:visible}
.search-inner{width:min(680px,88vw)}
.search-inner label{display:block;color:rgba(246,246,243,.6);font-size:13px;letter-spacing:.1em;margin-bottom:14px}
.search-inner input{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(246,246,243,.34);
  color:var(--paper);font-size:clamp(20px,3vw,30px);padding:10px 0;outline:none;
  transition:border-color .2s var(--ease);
}
.search-inner input::placeholder{color:rgba(246,246,243,.3)}
.search-inner input:focus{border-bottom-color:var(--volt)}
.search-close{position:absolute;top:26px;right:clamp(20px,4vw,48px);color:var(--paper);font-size:26px;line-height:1}
/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--ink);
  display:flex;flex-direction:column;padding:22px clamp(20px,5vw,32px) 26px;
  transform:translateY(-102%);transition:transform .34s var(--ease);
}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;color:var(--paper);padding-bottom:20px;border-bottom:1px solid rgba(246,246,243,.14)}
.drawer-close{color:var(--paper);font-size:28px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px;flex:1}
.drawer-nav a{
  color:var(--paper);font-size:19px;font-weight:600;padding:18px 2px;
  border-bottom:1px solid rgba(246,246,243,.12);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--volt);padding-left:8px}
.drawer-foot{padding-top:20px}
/* ========== 分类页头 ========== */
.cat-hero{
  position:relative;background:var(--deep);color:var(--paper);
  padding:calc(var(--head-h) + 74px) 0 76px;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.20;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,59,52,.94) 0%,rgba(14,59,52,.72) 52%,rgba(14,59,52,.42) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;font-weight:700;text-transform:uppercase;
  color:var(--ink);background:var(--volt);padding:6px 14px;border-radius:var(--r-tag);
  margin-bottom:26px;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.32fr) minmax(0,.68fr);gap:clamp(28px,4vw,64px);align-items:end}
.cat-hero h1{color:var(--paper);max-width:14em}
.hero-lead{
  color:rgba(246,246,243,.76);font-size:16px;line-height:1.85;max-width:34ch;
  padding-left:22px;border-left:2px solid var(--volt);
}
.hero-stat{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,3vw,40px);margin-top:56px;padding-top:26px;
  border-top:1px solid rgba(246,246,243,.18);
}
.hero-stat .hs strong{
  display:block;font-family:var(--font-num);font-weight:600;
  font-size:clamp(28px,3.4vw,42px);color:var(--paper);line-height:1.1;
}
.hero-stat .hs span{display:block;font-size:13px;color:rgba(246,246,243,.6);margin-top:6px;letter-spacing:.02em}
/* ========== 通用板块 ========== */
.section{padding:clamp(52px,7vw,96px) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head .sh-left{max-width:640px}
.section-head p{color:var(--muted);margin-top:14px;font-size:15px}
.rule-top{border-top:1px solid var(--line)}
/* ========== 主体两栏 ========== */
.split{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:clamp(28px,4vw,64px);align-items:start}
.proj-list{display:flex;flex-direction:column;gap:22px}
.proj-card{
  display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr);
  gap:24px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.proj-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,17,20,.2)}
.proj-card:nth-child(even){grid-template-columns:minmax(0,1fr) minmax(0,220px)}
.proj-card:nth-child(even) .proj-media{order:2}
.proj-media{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:16/10;background:var(--ink);
}
.proj-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.proj-card:hover .proj-media img{transform:scale(1.04)}
.proj-media.is-empty{display:flex;align-items:center;justify-content:center}
.proj-media.is-empty::after{
  content:"";width:46px;height:46px;border:1px solid var(--volt);border-radius:8px;
  box-shadow:14px 14px 0 -4px rgba(214,255,59,.24);
}
.proj-body{display:flex;flex-direction:column;gap:12px;padding:6px 4px 6px 0;min-width:0}
.proj-body h3{font-size:20px}
.proj-body p{color:var(--muted);font-size:15px;line-height:1.8}
.tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:700;
  letter-spacing:.08em;padding:5px 11px;border-radius:var(--r-tag);
  background:var(--volt);color:var(--ink);align-self:flex-start;
}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--muted);letter-spacing:.06em}
.proj-meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:auto;font-size:13px;color:var(--muted)}
.proj-meta span{display:inline-flex;align-items:center;gap:7px}
.proj-meta span::before{content:"";width:6px;height:6px;background:var(--ink);border-radius:2px;flex:0 0 auto}
/* ========== 侧栏 ========== */
.side-stick{position:sticky;top:88px;display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px}
.side-card h2{font-size:19px;margin-bottom:6px}
.side-sub{font-size:13px;color:var(--muted);margin-bottom:18px}
.point-list{display:flex;flex-direction:column}
.point-list li{
  position:relative;padding:13px 0 13px 16px;font-size:14.5px;color:var(--ink-2);
  border-bottom:1px solid var(--line);line-height:1.7;
}
.point-list li:last-child{border-bottom:0}
.point-list li::before{
  content:"";position:absolute;left:0;top:20px;width:3px;height:14px;background:var(--volt);border-radius:2px;
}
.side-note{
  background:var(--ink);color:rgba(246,246,243,.72);border-radius:var(--r-card);
  padding:22px;font-size:13.5px;line-height:1.8;
}
.side-note b{display:block;color:var(--paper);font-size:15px;margin-bottom:8px}
/* ========== 对比清单 ========== */
.cmp-list{border-top:1px solid var(--line)}
.cmp-row{
  display:grid;grid-template-columns:minmax(120px,200px) minmax(0,1fr) auto;
  gap:clamp(14px,2.6vw,40px);align-items:center;
  padding:22px 12px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.cmp-row:hover{background:var(--card)}
.cmp-name{font-weight:700;color:var(--ink);font-size:16px}
.cmp-desc{color:var(--muted);font-size:14.5px;line-height:1.75}
.badge{
  display:inline-flex;align-items:center;font-size:12px;font-weight:700;
  letter-spacing:.06em;padding:5px 12px;border-radius:var(--r-tag);white-space:nowrap;
}
.badge-ok{background:rgba(31,169,113,.13);color:var(--ok)}
.badge-warn{background:rgba(232,163,61,.16);color:#9A6A15}
.badge-ink{background:var(--ink);color:var(--volt)}
.badge-line{border:1px solid var(--line);color:var(--muted)}
/* ========== FAQ ========== */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.62fr) minmax(0,1.38fr);gap:clamp(28px,4vw,64px);align-items:start}
.faq-intro p{color:var(--muted);margin-top:16px;font-size:15px;max-width:34ch}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:22px 2px;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary:hover{color:var(--deep)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";width:14px;height:14px;flex:0 0 auto;
  background:
    linear-gradient(var(--ink),var(--ink)) center/14px 2px no-repeat,
    linear-gradient(var(--ink),var(--ink)) center/2px 14px no-repeat;
  transition:transform .26s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 2px 24px;color:var(--muted);font-size:15px;line-height:1.85;max-width:700px}
/* ========== CTA ========== */
.cta-band{background:var(--ink);color:rgba(246,246,243,.74);padding:clamp(52px,7vw,92px) 0}
.cta-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:clamp(28px,4vw,64px);align-items:center}
.cta-grid h2{color:var(--paper);max-width:16em}
.cta-grid p{margin-top:18px;font-size:15.5px;line-height:1.85;max-width:52ch}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:rgba(246,246,243,.76)}
.cta-points li::before{content:"";width:8px;height:8px;margin-top:9px;background:var(--volt);border-radius:2px;flex:0 0 auto}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
/* ========== 页脚 ========== */
.site-footer{background:var(--ink);color:rgba(246,246,243,.62);padding:clamp(52px,6vw,80px) 0 26px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:clamp(24px,3.4vw,56px)}
.foot-brand .logo-text b{color:var(--paper);font-size:17px}
.foot-brand .logo-text span{color:rgba(246,246,243,.5)}
.foot-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:34ch}
.foot-col h4{color:var(--paper);font-size:14px;letter-spacing:.08em;margin-bottom:18px;font-weight:700}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a,.foot-col span{font-size:14px;color:rgba(246,246,243,.62);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.foot-col a:hover{color:var(--volt);transform:translateX(2px)}
.foot-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(246,246,243,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(246,246,243,.5);
}
.foot-bottom .dot{display:inline-block;width:7px;height:7px;background:var(--volt);border-radius:50%;margin-right:8px;vertical-align:middle}
/* ========== 动效 ========== */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
/* ========== 响应式 ========== */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}
}
@media (max-width:991px){
  .nav-links{display:none}
  .icon-btn{display:none}
  .burger{display:inline-flex}
  .nav-right .btn-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-lead{max-width:none;padding-left:0;border-left:0;padding-top:20px;border-top:2px solid var(--volt)}
  .split{grid-template-columns:1fr}
  .side-stick{position:static}
  .faq-wrap{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .proj-card,.proj-card:nth-child(even){grid-template-columns:1fr;gap:16px}
  .proj-card:nth-child(even) .proj-media{order:0}
  .proj-body{padding:0 2px 6px}
  .hero-stat{grid-template-columns:1fr 1fr;gap:20px}
  .cmp-row{grid-template-columns:1fr;gap:10px;padding:20px 8px}
  .cmp-row .badge{justify-self:start}
  .section-head{margin-bottom:28px}
}
@media (max-width:559px){
  .container{padding:0 20px}
  .logo-text b{font-size:15px}
  .hero-stat{grid-template-columns:1fr;gap:18px}
  .foot-grid{grid-template-columns:1fr}
  .btn{padding:13px 22px}
  .cta-actions .btn{width:100%}
  .cat-hero{padding-top:calc(var(--head-h) + 52px)}
}