/* roulang page: index */
/* ==========================================================================
   南宫电子pg官网 — 全站视觉系统
   1. 设计变量  2. 重置与基础  3. 容器与区块  4. 按钮  5. 标签徽章
   6. 头部导航  7. 移动抽屉  8. 首屏  9. 横滑片库  10. 推荐栅格
   11. 资讯列表  12. 片单分区  13. 问答  14. 底部行动带  15. 页脚  16. 动效  17. 响应式
   ========================================================================== */

/* 1. 设计变量 */
:root{
  --bg-0:#08070F;
  --bg-1:#0F0D1C;
  --surface:#16142A;
  --surface-2:#1E1B36;
  --brand:#7B4DFF;
  --brand-2:#B14CFF;
  --accent:#24E0C8;
  --hot:#FFB020;
  --danger:#FF5A6E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(177,76,255,.35);
  --text-1:#F4F3FB;
  --text-2:#A7A3C6;
  --text-3:#6C688C;
  --grad:linear-gradient(135deg,#7B4DFF,#B14CFF);
  --grad-soft:linear-gradient(135deg,rgba(123,77,255,.18),rgba(177,76,255,.06));
  --glow:0 0 24px rgba(123,77,255,.45);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 18px 40px rgba(0,0,0,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:88px;
  --header-h-sm:64px;
  --font-base:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"DIN Alternate","Barlow","Helvetica Neue",Arial,sans-serif;
}

/* 2. 重置与基础 */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.35}
p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(123,77,255,.45);color:#fff}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* 3. 容器与区块 */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35;font-weight:700}
.section-head .sub{margin-top:10px;font-size:.9375rem;color:var(--text-3);max-width:640px}
.section-note{font-size:.8125rem;color:var(--text-3);letter-spacing:.02em}
.divider-line{height:1px;background:linear-gradient(90deg,rgba(177,76,255,.45),rgba(36,224,200,.16) 45%,rgba(255,255,255,0));border:0;margin:0}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:.9375rem;color:var(--text-2);transition:color .2s var(--ease);white-space:nowrap}
.text-link i{font-style:normal;transition:transform .2s var(--ease)}
.text-link:hover{color:var(--accent)}
.text-link:hover i{transform:translateX(4px)}
.meta-dot{display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:.8125rem;color:var(--text-3);letter-spacing:.02em}
.meta-dot span{display:inline-flex;align-items:center;gap:10px}
.meta-dot span::after{content:"";width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.7}
.meta-dot span:last-child::after{display:none}

/* 4. 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:.9375rem;font-weight:600;line-height:1;letter-spacing:.02em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 0 24px rgba(123,77,255,.45)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 32px rgba(123,77,255,.6)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 10px rgba(0,0,0,.4);filter:brightness(.98)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text-1);border-radius:12px}
.btn-ghost:hover{border-color:var(--brand);background:rgba(123,77,255,.12)}
.btn-ghost:active{background:rgba(123,77,255,.2)}
.btn-sm{padding:10px 18px;font-size:.875rem}
.btn-block{width:100%}
.btn.is-disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;filter:none}

/* 5. 标签与徽章 */
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);
  font-size:.75rem;font-weight:600;letter-spacing:.02em;
  background:rgba(123,77,255,.12);color:#C6ACFF;border:1px solid rgba(123,77,255,.22);
}
.pill-accent{background:rgba(36,224,200,.12);color:var(--accent);border-color:rgba(36,224,200,.26)}
.pill-hot{background:rgba(255,176,32,.14);color:var(--hot);border-color:rgba(255,176,32,.28)}
.pill-muted{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}

/* 6. 头部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:var(--header-h);
  border-bottom:1px solid transparent;
  transition:height .32s var(--ease),background .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.site-header.is-scrolled{
  height:var(--header-h-sm);
  background:rgba(8,7,15,.78);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:rgba(177,76,255,.28);
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:24px;height:100%;
}
.nav-cluster{display:flex;align-items:center;gap:4px}
.nav-cluster.is-left{justify-content:flex-start}
.nav-cluster.is-right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:8px;font-size:.9375rem;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--text-1);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:20%;right:20%;bottom:-2px;height:2px;border-radius:2px;
  background:var(--grad);box-shadow:0 0 12px rgba(123,77,255,.85);
}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{display:inline-flex;filter:drop-shadow(0 0 14px rgba(123,77,255,.55))}
.brand-text{font-size:1.0625rem;font-weight:800;color:var(--text-1);letter-spacing:.02em;white-space:nowrap}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  color:var(--text-2);transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(123,77,255,.1)}
.search-panel{
  position:absolute;top:calc(100% + 10px);right:40px;
  display:none;gap:10px;padding:14px;border-radius:var(--r-m);
  background:rgba(22,20,42,.92);backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow-2);
}
.search-panel.is-open{display:flex}
.search-panel input{
  width:240px;padding:11px 14px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface-2);color:var(--text-1);font-size:.875rem;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-panel input::placeholder{color:var(--text-3)}
.search-panel input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(123,77,255,.22)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  justify-self:end;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(123,77,255,.1)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .28s var(--ease),opacity .28s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 7. 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;padding:104px 24px 40px;overflow-y:auto;
  background:rgba(22,20,42,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.1);
  transform:translateY(-100%);
  transition:transform .38s var(--ease);
}
.drawer.is-open{transform:translateY(0)}
.drawer-group{margin-bottom:28px}
.drawer-group h3{font-size:.8125rem;color:var(--text-3);letter-spacing:.08em;margin-bottom:12px;font-weight:600}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;border-bottom:1px solid var(--line);
  font-size:1rem;color:var(--text-1);transition:padding-left .2s var(--ease),color .2s var(--ease);
}
.drawer-link:hover{padding-left:12px;color:var(--accent)}
.drawer-link i{font-style:normal;color:var(--text-3)}
.drawer-foot{margin-top:32px;padding-top:24px;border-top:1px solid var(--line);font-size:.8125rem;color:var(--text-3);line-height:2}

/* 8. 首屏 */
.hero{
  position:relative;display:flex;align-items:flex-end;overflow:hidden;
  min-height:clamp(560px,78vh,820px);
  padding:150px 0 76px;
  border-bottom:1px solid var(--line);
}
.hero-bg{position:absolute;inset:0;background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;}
.hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(8,7,15,.94) 0%,rgba(8,7,15,.74) 40%,rgba(8,7,15,0) 78%),
    linear-gradient(0deg,rgba(8,7,15,.88) 0%,rgba(8,7,15,.22) 52%,rgba(8,7,15,.42) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%}
.hero-content{max-width:45%}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--r-pill);
  background:rgba(22,20,42,.55);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.1);
  font-size:.8125rem;color:var(--text-1);letter-spacing:.02em;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.hero h1{margin-top:22px;font-size:clamp(1.9rem,4vw,3rem);line-height:1.25;font-weight:800;letter-spacing:-.01em}
.hero-sub{margin-top:18px;font-size:1rem;line-height:1.75;color:var(--text-2);max-width:520px}
.hero-meta{margin-top:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-progress{
  position:absolute;right:40px;bottom:70px;z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:12px;
}
.hero-progress span{font-family:var(--font-num);font-size:.8125rem;color:var(--text-3);letter-spacing:.08em}
.hero-progress .bar{position:relative;width:2px;height:88px;border-radius:2px;background:rgba(255,255,255,.12);overflow:hidden}
.hero-progress .bar::after{content:"";position:absolute;top:0;left:0;width:100%;height:38%;border-radius:2px;background:var(--grad);box-shadow:0 0 12px rgba(123,77,255,.8)}

/* 9. 横滑片库 */
.shelf-wrap{position:relative}
.shelf-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 40px 24px;margin:0 -40px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.shelf-track::-webkit-scrollbar{display:none}
.shelf-card{
  flex:0 0 clamp(220px,22vw,300px);scroll-snap-align:start;
  position:relative;border-radius:20px;overflow:hidden;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.shelf-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(123,77,255,.4)}
.shelf-card .thumb{position:relative;aspect-ratio:2/3;overflow:hidden;background:var(--grad-soft)}
.shelf-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.shelf-card:hover .thumb img{transform:scale(1.06)}
.shelf-card .thumb::after{content:"";position:absolute;left:0;right:0;bottom:0;height:60%;background:linear-gradient(transparent,rgba(8,7,15,.92))}
.shelf-card .body{position:absolute;left:0;right:0;bottom:0;padding:18px}
.shelf-card h3{
  margin-top:12px;font-size:1rem;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .25s var(--ease);
}
.shelf-card:hover h3{color:var(--accent)}
.shelf-card .meta{margin-top:10px;font-size:.8125rem;color:var(--text-3)}
.shelf-arrow{
  position:absolute;top:42%;transform:translateY(-50%);z-index:4;
  width:46px;height:46px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(22,20,42,.78);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(12px);color:var(--text-1);
  transition:background .2s var(--ease),border-color .2s var(--ease),opacity .2s var(--ease);
}
.shelf-arrow:hover{background:rgba(123,77,255,.35);border-color:var(--line-strong)}
.shelf-arrow.is-prev{left:-6px}
.shelf-arrow.is-next{right:-6px}
.shelf-arrow[hidden]{display:none}

/* 10. 推荐栅格 */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;grid-auto-rows:250px}
.feature-card{
  position:relative;overflow:hidden;border-radius:20px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(123,77,255,.4)}
.feature-card.is-lead{grid-column:span 6;grid-row:span 2}
.feature-card.is-small{grid-column:span 3}
.feature-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feature-card:hover img{transform:scale(1.06)}
.feature-card .fc-mask{position:absolute;inset:0;background:linear-gradient(transparent 38%,rgba(8,7,15,.92))}
.feature-card .fc-body{position:absolute;left:0;right:0;bottom:0;padding:20px}
.feature-card .fc-body h3{
  margin-top:12px;font-size:1.0625rem;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .25s var(--ease);
}
.feature-card.is-lead .fc-body h3{font-size:1.5rem}
.feature-card:hover .fc-body h3{color:var(--accent)}
.feature-card .fc-meta{margin-top:10px;font-size:.8125rem;color:var(--text-3)}
.fc-corner{position:absolute;top:16px;left:16px;z-index:2}

/* 11. 资讯列表 */
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-item{
  display:grid;grid-template-columns:132px 1fr;gap:18px;padding:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(123,77,255,.4)}
.news-thumb{position:relative;border-radius:10px;overflow:hidden;background:var(--grad-soft);aspect-ratio:16/10}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-item:hover .news-thumb img{transform:scale(1.06)}
.news-thumb-ph{
  display:block;width:100%;height:100%;
  background:
    radial-gradient(circle at 30% 30%,rgba(36,224,200,.28),transparent 55%),
    linear-gradient(135deg,rgba(123,77,255,.35),rgba(30,27,54,.9));
}
.news-body{min-width:0}
.news-body h3{
  margin-top:10px;font-size:1rem;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .25s var(--ease);
}
.news-item:hover .news-body h3{color:var(--accent)}
.news-body p{
  margin-top:8px;font-size:.875rem;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px}
.news-foot time{font-family:var(--font-num);font-size:.8125rem;color:var(--text-3);letter-spacing:.02em}
.news-foot .arrow{color:var(--text-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.news-item:hover .news-foot .arrow{transform:translateX(4px);color:var(--accent)}
.empty-state{
  grid-column:1/-1;min-height:240px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-l);background:var(--bg-1);
}
.empty-state svg{opacity:.7}
.empty-state p{font-size:.9375rem;color:var(--text-3)}

/* 12. 片单分区 */
.playlist{padding:96px 0}
.part-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.part-head h2{font-size:clamp(1.4rem,2.4vw,2rem)}
.part-head .range{margin-top:10px;font-size:.9375rem;color:var(--text-3);max-width:620px}

.part-one-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.part-one-card{
  position:relative;border-radius:20px;overflow:hidden;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.part-one-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(123,77,255,.4)}
.part-one-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--grad-soft)}
.part-one-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.part-one-card:hover .thumb img{transform:scale(1.06)}
.part-one-card .thumb::after{content:"";position:absolute;left:0;right:0;bottom:0;height:60%;background:linear-gradient(transparent,rgba(8,7,15,.92))}
.part-one-card .body{padding:18px}
.part-one-card h3{
  margin-top:12px;font-size:1.0625rem;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .25s var(--ease);
}
.part-one-card:hover h3{color:var(--accent)}
.part-one-card .desc{margin-top:8px;font-size:.875rem;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.part-one-card .foot{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:.8125rem;color:var(--text-3)}

.part-two-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.part-two-visual{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.part-two-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.part-two-visual .cap{
  position:absolute;left:0;right:0;bottom:0;padding:24px;
  background:linear-gradient(transparent,rgba(8,7,15,.94));
}
.part-two-visual .cap h3{font-size:1.25rem;margin-top:12px}
.part-two-visual .cap p{margin-top:8px;font-size:.875rem;color:var(--text-2)}
.part-two-list{display:flex;flex-direction:column;gap:14px}
.part-two-item{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;
  padding:20px 22px;border-radius:var(--r-m);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.part-two-item:hover{transform:translateY(-4px);border-color:rgba(36,224,200,.35);background:var(--surface-2)}
.part-two-item .idx{font-family:var(--font-num);font-size:.8125rem;color:var(--text-3);letter-spacing:.06em}
.part-two-item h3{font-size:1rem;line-height:1.5;transition:color .25s var(--ease)}
.part-two-item:hover h3{color:var(--accent)}
.part-two-item .tag{margin-top:8px}
.part-two-item .go{color:var(--text-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.part-two-item:hover .go{transform:translateX(4px);color:var(--accent)}

.part-three-list{border-top:1px solid var(--line)}
.rank-row{
  display:grid;grid-template-columns:96px 1fr auto;align-items:center;gap:24px;
  padding:22px 12px;border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),padding-left .25s var(--ease);
}
.rank-row:hover{background:rgba(123,77,255,.07);padding-left:20px}
.rank-num{
  font-family:var(--font-num);font-size:2.375rem;font-weight:800;line-height:1;
  color:rgba(255,255,255,.18);letter-spacing:-.02em;
  transition:color .25s var(--ease);
}
.rank-row:hover .rank-num{color:var(--brand)}
.rank-row.is-top .rank-num{
  background:linear-gradient(135deg,#7B4DFF,#24E0C8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.rank-main h3{font-size:1.0625rem;line-height:1.5;transition:color .25s var(--ease)}
.rank-row:hover .rank-main h3{color:var(--accent)}
.rank-main .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.rank-go{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;color:var(--text-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.rank-row:hover .rank-go{transform:translateX(4px);color:var(--accent)}

/* 13. 问答 */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  position:relative;display:flex;align-items:center;gap:16px;width:100%;
  min-height:64px;padding:12px 4px 12px 22px;text-align:left;
  font-size:1rem;font-weight:600;color:var(--text-1);
  transition:color .2s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:transparent;
  transition:background .28s var(--ease),box-shadow .28s var(--ease);
}
.faq-item.is-open .faq-q::before{background:var(--grad);box-shadow:0 0 12px rgba(123,77,255,.75)}
.faq-q:hover{color:var(--accent)}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;margin-left:auto;transition:transform .28s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--text-2);border-radius:2px;transition:transform .28s var(--ease),opacity .28s var(--ease),background .28s var(--ease)}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-item.is-open .faq-icon::before{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.faq-a-inner{max-width:560px;padding:20px 4px 26px 22px;border-top:1px solid var(--line);font-size:.9375rem;line-height:1.9;color:var(--text-2)}
.faq-a-inner p + p{margin-top:14px}

/* 14. 底部行动带 */
.cta-band{
  position:relative;overflow:hidden;padding:92px 0;
  background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band::before{
  content:"";position:absolute;left:50%;top:50%;width:760px;height:760px;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(123,77,255,.18),transparent 62%);
  pointer-events:none;
}
.cta-band .inner{position:relative;z-index:2}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2.125rem)}
.cta-band p{margin:16px auto 0;max-width:640px;font-size:.9375rem;color:var(--text-2)}
.cta-band .btn{margin-top:34px}

/* 15. 页脚 */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.875rem;line-height:1.9;color:var(--text-3);max-width:320px}
.footer-col h3{font-size:.8125rem;font-weight:600;letter-spacing:.08em;color:var(--text-3);margin-bottom:16px}
.footer-col li + li{margin-top:10px}
.footer-link{
  display:inline-flex;align-items:center;gap:8px;font-size:.875rem;color:var(--text-2);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.footer-link:hover{transform:translateX(-2px);color:var(--accent)}
.footer-link.is-forward:hover{transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact .row{display:flex;align-items:flex-start;gap:12px;font-size:.875rem;color:var(--text-2)}
.footer-contact .ic{
  flex:0 0 36px;width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(123,77,255,.12);border:1px solid rgba(123,77,255,.2);color:#C6ACFF;
}
.footer-contact .row small{display:block;font-size:.75rem;color:var(--text-3)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:24px 0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:var(--text-3);
}
.footer-bottom .domain{font-family:var(--font-num);letter-spacing:.04em}

/* 16. 动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* 17. 响应式 */
@media (min-width:1440px){
  .hero-content{max-width:45%;padding-left:24px}
}
@media (max-width:1439px){
  .footer-grid{gap:32px}
}
@media (max-width:1199px){
  .container{padding:0 28px}
  .shelf-track{padding:4px 28px 24px;margin:0 -28px}
  .hero-content{max-width:62%}
  .hero-progress{display:none}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;row-gap:36px}
  .footer-contact{grid-column:1/-1}
}
@media (max-width:992px){
  :root{--header-h:72px}
  .nav-cluster.is-left,.nav-cluster.is-right{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{grid-template-columns:44px 1fr 44px}
  .brand{grid-column:2}
  .search-panel{right:28px}
  .section,.playlist{padding:72px 0}
  .hero{padding:132px 0 64px;min-height:auto}
  .hero-content{max-width:100%}
  .feature-grid{grid-auto-rows:220px}
  .feature-card.is-lead{grid-column:span 12;grid-row:span 2}
  .feature-card.is-small{grid-column:span 6}
  .news-list{grid-template-columns:1fr}
  .part-one-grid{grid-template-columns:repeat(2,1fr)}
  .part-two-grid{grid-template-columns:1fr;gap:28px}
  .shelf-arrow{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .shelf-track{padding:4px 18px 22px;margin:0 -18px}
  .section,.playlist{padding:56px 0}
  .section-head{align-items:flex-start;flex-direction:column;gap:12px}
  .part-head{align-items:flex-start;flex-direction:column;gap:12px}
  .hero{padding:118px 0 56px;min-height:auto}
  .hero-meta{line-height:2.2}
  .feature-grid{grid-template-columns:1fr;grid-auto-rows:230px}
  .feature-card.is-lead,.feature-card.is-small{grid-column:span 1;grid-row:span 1}
  .feature-card.is-lead .fc-body h3{font-size:1.125rem}
  .part-one-grid{grid-template-columns:1fr}
  .rank-row{grid-template-columns:56px 1fr;gap:16px;padding:18px 8px}
  .rank-num{font-size:1.75rem}
  .rank-go{grid-column:2;justify-self:start}
  .news-item{grid-template-columns:1fr}
  .cta-band{padding:72px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:559px){
  body{font-size:15px}
  .brand-text{font-size:.9375rem}
  .hero h1{font-size:1.6rem}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .shelf-card{flex:0 0 76vw}
  .search-panel{left:18px;right:18px}
  .search-panel input{width:100%}
  .search-panel form{width:100%}
}

/* roulang page: article */
/* ============================================================
   设计系统 · 变量
   ============================================================ */
:root{
  --bg-0:#08070F;
  --bg-1:#0F0D1C;
  --surface:#16142A;
  --surface-2:#1E1B36;
  --brand:#7B4DFF;
  --brand-2:#B14CFF;
  --accent:#24E0C8;
  --hot:#FFB020;
  --danger:#FF5A6E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(177,76,255,.35);
  --text-1:#F4F3FB;
  --text-2:#A7A3C6;
  --text-3:#6C688C;
  --grad-brand:linear-gradient(135deg,#7B4DFF,#B14CFF);
  --grad-line:linear-gradient(90deg,rgba(123,77,255,0),rgba(123,77,255,.55),rgba(36,224,200,.25),rgba(36,224,200,0));
  --glow:0 0 24px rgba(123,77,255,.45);
  --glow-lg:0 0 32px rgba(123,77,255,.55);
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 18px 40px rgba(0,0,0,.5);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --pill:999px;
  --glass:rgba(22,20,42,.55);
  --glass-line:1px solid rgba(255,255,255,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:88px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Barlow","DIN Alternate",-apple-system,"PingFang SC",sans-serif;
}

/* ============================================================
   reset / base
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img,svg,video{max-width:100%;display:block;}
img{height:auto;}
a{color:var(--text-2);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--text-1);}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;color:var(--text-1);font-weight:700;line-height:1.3;}
p{margin:0;}
table{border-collapse:collapse;width:100%;}
::selection{background:rgba(123,77,255,.4);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.svg-sprite{position:absolute;width:0;height:0;overflow:hidden;}
.ic{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(123,77,255,.14);color:var(--brand-2);flex:none;}
.ic svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:clamp(1.4rem,2.4vw,2rem);}
.section-head .sub{margin-top:10px;font-size:.9375rem;color:var(--text-3);}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;font-weight:600;color:var(--text-2);letter-spacing:.02em;white-space:nowrap;}
.link-more svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease);}
.link-more:hover{color:var(--accent);}
.link-more:hover svg{transform:translateX(4px);}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 28px;border-radius:var(--pill);
  font-size:.9375rem;font-weight:600;letter-spacing:.02em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  cursor:pointer;white-space:nowrap;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--glow);}
.btn-primary:hover{color:#fff;filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--glow-lg);}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 10px rgba(0,0,0,.35);}
.btn-ghost{background:transparent;color:var(--text-1);border:1px solid rgba(255,255,255,.18);}
.btn-ghost:hover{color:var(--text-1);border-color:var(--brand);background:rgba(123,77,255,.12);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 20px;font-size:.875rem;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ============================================================
   标签 / 徽章
   ============================================================ */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--pill);
  font-size:.75rem;font-weight:600;letter-spacing:.02em;
  background:rgba(123,77,255,.12);color:#C9B4FF;
  border:1px solid rgba(123,77,255,.22);
}
.pill.is-accent{background:rgba(36,224,200,.12);color:var(--accent);border-color:rgba(36,224,200,.24);}
.pill.is-hot{background:rgba(255,176,32,.14);color:var(--hot);border-color:rgba(255,176,32,.26);}
.chip{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--pill);
  font-size:.8125rem;color:var(--text-2);
  background:var(--surface);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{color:var(--accent);border-color:rgba(36,224,200,.3);background:rgba(36,224,200,.08);}
.meta-line{font-size:.8125rem;line-height:1.5;font-weight:500;letter-spacing:.02em;color:var(--text-3);}

/* ============================================================
   导航
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(8,7,15,.78);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(123,77,255,.28);
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:var(--nav-h);
  transition:height .3s var(--ease);
}
.site-header.is-stuck .header-inner{height:64px;}
.nav-cluster{display:flex;align-items:center;gap:6px;}
.nav-cluster.is-left{justify-content:flex-start;}
.nav-cluster.is-right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:8px;
  font-size:.9375rem;font-weight:500;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--text-1);}
.nav-link.is-active::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(123,77,255,.9);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 10px;border-radius:12px;
  transition:transform .2s var(--ease);
}
.brand:hover{transform:translateY(-1px);}
.brand-mark{display:inline-flex;filter:drop-shadow(0 0 14px rgba(123,77,255,.55));}
.brand-text{
  font-size:1.0625rem;font-weight:800;letter-spacing:.02em;
  background:linear-gradient(120deg,#F4F3FB 20%,#C9B4FF 60%,#7BE8D8 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap;
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.icon-btn:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.menu-btn{display:none;}
.search-bar{
  border-top:1px solid var(--line);
  background:rgba(15,13,28,.92);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.search-bar[hidden]{display:none;}
.search-bar .container{display:flex;align-items:center;gap:12px;padding-top:16px;padding-bottom:16px;}
.search-bar input{
  flex:1;padding:12px 16px;border-radius:12px;
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-bar input::placeholder{color:var(--text-3);}
.search-bar input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(123,77,255,.16);}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:200;
  background:rgba(8,7,15,.94);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:24px 22px 32px;
  display:flex;flex-direction:column;gap:26px;
  transform:translateY(-100%);
  transition:transform .36s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a,.drawer-sub a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:12px;
  font-size:1rem;color:var(--text-2);
  background:rgba(255,255,255,.02);
  border:1px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.drawer-nav a:hover,.drawer-sub a:hover{color:var(--text-1);background:rgba(123,77,255,.12);border-color:rgba(123,77,255,.28);}
.drawer-nav a.is-active{color:var(--text-1);border-color:rgba(123,77,255,.35);}
.drawer-title{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);margin-bottom:10px;}
.drawer-sub{display:flex;flex-direction:column;gap:4px;}
.drawer-contact{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:22px;border-top:1px solid var(--line);}
.drawer-contact .row{display:flex;align-items:center;gap:12px;font-size:.875rem;color:var(--text-2);}

/* ============================================================
   内页头部 banner + 面包屑
   ============================================================ */
.page-banner{
  position:relative;overflow:hidden;
  padding:72px 0 44px;
  background-image:linear-gradient(90deg,rgba(8,7,15,.94) 8%,rgba(8,7,15,.62) 58%,rgba(8,7,15,.9) 100%),
                   linear-gradient(180deg,rgba(8,7,15,.45),rgba(8,7,15,.96)),
                   url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:.8125rem;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.breadcrumb-divider{height:1px;margin-top:20px;background:var(--grad-line);}

/* ============================================================
   文章主体布局
   ============================================================ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;
  padding:56px 0 96px;
  align-items:start;
}
.article-main{min-width:0;}

.article-head{margin-bottom:28px;}
.article-head .pill{margin-bottom:18px;}
.article-head h1{
  font-size:clamp(1.9rem,4vw,3rem);
  line-height:1.25;font-weight:800;
  letter-spacing:-.01em;
  max-width:860px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;
  font-size:.8125rem;font-weight:500;letter-spacing:.02em;color:var(--text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}
.article-head-divider{height:1px;margin-top:24px;background:var(--grad-line);}

.article-cover{
  margin:32px 0 12px;
  border-radius:20px;overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-card);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-cover-cap{margin:12px 0 36px;font-size:.8125rem;color:var(--text-3);text-align:center;}

/* ============================================================
   正文阅读区
   ============================================================ */
.article-body{
  max-width:760px;
  font-size:17px;line-height:1.95;color:var(--text-2);
}
.article-body > * + *{margin-top:22px;}
.article-body h2{
  margin-top:48px;margin-bottom:16px;
  font-size:22px;line-height:1.45;font-weight:700;color:var(--text-1);
  padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.35em;bottom:.35em;width:4px;border-radius:3px;
  background:var(--grad-brand);box-shadow:0 0 14px rgba(123,77,255,.6);
}
.article-body h3{margin-top:36px;margin-bottom:12px;font-size:19px;line-height:1.5;color:var(--text-1);}
.article-body h4{margin-top:28px;margin-bottom:10px;font-size:1.0625rem;color:var(--text-1);}
.article-body p{color:var(--text-2);}
.article-body strong{color:var(--text-1);font-weight:700;}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(36,224,200,.35);}
.article-body a:hover{color:#7BF4E2;border-bottom-color:#7BF4E2;}
.article-body ul,.article-body ol{margin-top:18px;padding-left:0;}
.article-body ul li{
  position:relative;padding-left:22px;margin-bottom:10px;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.75em;width:6px;height:6px;border-radius:2px;
  background:var(--brand-2);
}
.article-body ol{counter-reset:olc;padding-left:0;}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:12px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-family:var(--font-num);font-size:.8125rem;font-weight:700;color:var(--accent);
  background:rgba(36,224,200,.1);border-radius:6px;padding:1px 7px;
}
.article-body blockquote{
  margin:32px 0;padding:20px 24px;
  background:rgba(22,20,42,.6);
  border-left:4px solid var(--brand);
  border-radius:0 var(--r-m) var(--r-m) 0;
  color:var(--text-2);font-style:normal;
}
.article-body blockquote p{margin:0;color:var(--text-2);}
.article-body img{border-radius:16px;margin:32px auto;border:1px solid var(--line);}
.article-body figure{margin:32px 0;}
.article-body figcaption{margin-top:10px;font-size:.8125rem;color:var(--text-3);text-align:center;}
.article-body table{
  margin:32px 0;font-size:.9375rem;
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
}
.article-body thead{background:rgba(123,77,255,.10);}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);}
.article-body th{color:var(--text-1);font-weight:700;}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body tbody tr:hover{background:rgba(255,255,255,.02);}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.875em;padding:2px 7px;border-radius:6px;
  background:var(--surface-2);color:var(--accent);border:1px solid var(--line);
}
.article-body pre{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:18px 20px;overflow-x:auto;
}
.article-body hr{border:0;height:1px;background:var(--grad-line);margin:44px 0;}

/* 文末 */
.article-foot{margin-top:56px;padding-top:32px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .label{font-size:.8125rem;color:var(--text-3);letter-spacing:.04em;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
.post-nav-card{
  display:flex;flex-direction:column;gap:10px;
  padding:20px;border-radius:var(--r-m);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.post-nav-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.45);box-shadow:var(--shadow-hover);}
.post-nav-card .dir{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);}
.post-nav-card .dir svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.post-nav-card .t{font-size:.9375rem;font-weight:600;color:var(--text-1);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-nav-card:hover .t{color:var(--accent);}
.post-nav-card.is-next{align-items:flex-end;text-align:right;}
.post-nav-card.is-next .dir{flex-direction:row-reverse;}
.foot-actions{margin-top:28px;}

/* ============================================================
   侧栏
   ============================================================ */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:28px;}
.aside-box{
  padding:24px;border-radius:var(--r-m);
  background:var(--bg-1);border:1px solid var(--line);
}
.aside-box h2{
  font-size:1rem;font-weight:700;margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.aside-box h2::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--grad-brand);box-shadow:0 0 12px rgba(123,77,255,.6);}
.rank-list{display:flex;flex-direction:column;}
.rank-list li + li{border-top:1px solid var(--line);}
.rank-item{display:flex;gap:14px;padding:14px 0;align-items:flex-start;}
.rank-item .no{
  font-family:var(--font-num);font-size:1.125rem;font-weight:800;line-height:1;
  color:var(--brand-2);opacity:.75;min-width:26px;padding-top:4px;
}
.rank-item .txt{display:flex;flex-direction:column;gap:6px;min-width:0;}
.rank-item .t{
  font-size:.9375rem;font-weight:600;color:var(--text-1);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.rank-item:hover .t{color:var(--accent);}
.rank-item:hover .no{color:var(--accent);opacity:1;}
.rank-item .m{font-size:.75rem;color:var(--text-3);}
.cloud{display:flex;flex-wrap:wrap;gap:10px;}

/* 无内容态 */
.empty-article{
  max-width:760px;
  padding:56px 32px;border-radius:var(--r-l);text-align:center;
  background:var(--bg-1);border:1px dashed rgba(123,77,255,.35);
}
.empty-article .mark{
  font-family:var(--font-num);font-size:3.4rem;font-weight:800;line-height:1;
  color:rgba(123,77,255,.24);margin-bottom:14px;
}
.empty-article h2{font-size:1.25rem;margin-bottom:10px;}
.empty-article p{font-size:.9375rem;color:var(--text-3);margin-bottom:22px;}

/* ============================================================
   底部 · 相关推荐 / CTA
   ============================================================ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;flex-direction:column;
  border-radius:20px;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(123,77,255,.5);}
.rel-thumb{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--surface),rgba(123,77,255,.22));}
.rel-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.06);}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body .t{
  font-size:1rem;font-weight:700;color:var(--text-1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card:hover .rel-body .t{color:var(--accent);}
.rel-body .d{font-size:.875rem;color:var(--text-3);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body .m{margin-top:auto;font-size:.8125rem;color:var(--text-3);}

.cta-band{
  position:relative;overflow:hidden;
  margin:96px 0 0;padding:88px 0;
  background:var(--bg-1);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band::before{
  content:"";position:absolute;left:50%;top:50%;width:760px;height:420px;transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,rgba(123,77,255,.30),rgba(123,77,255,0));
  pointer-events:none;
}
.cta-band .inner{position:relative;z-index:1;max-width:720px;margin:0 auto;}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,2rem);margin-bottom:14px;}
.cta-band p{font-size:.9375rem;color:var(--text-3);margin-bottom:28px;}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;padding-left:0;}
.footer-brand p{font-size:.875rem;line-height:1.8;color:var(--text-3);max-width:320px;}
.footer-col h3{font-size:.9375rem;font-weight:700;margin-bottom:18px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-link{display:inline-block;font-size:.875rem;color:var(--text-2);transition:transform .2s var(--ease),color .2s var(--ease);}
.footer-link.is-forward:hover{transform:translateX(2px);color:var(--accent);}
.footer-contact{display:flex;flex-direction:column;gap:16px;}
.footer-contact .row{display:flex;align-items:flex-start;gap:12px;font-size:.875rem;color:var(--text-2);line-height:1.6;}
.footer-contact .row small{display:block;font-size:.75rem;color:var(--text-3);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid var(--line);
  font-size:.8125rem;color:var(--text-3);
}
.footer-bottom .domain{font-family:var(--font-num);letter-spacing:.06em;color:var(--text-3);}

/* ============================================================
   入场动画
   ============================================================ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:1440px){
  .container{padding:0 64px;}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:48px;}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-aside .aside-box{flex:1 1 320px;}
}
@media (max-width:991px){
  .container{padding:0 28px;}
  .section{padding:72px 0;}
  .nav-cluster{display:none;}
  .menu-btn{display:inline-flex;justify-self:start;}
  .header-inner{grid-template-columns:auto 1fr auto;}
  .brand{justify-self:center;}
  .icon-btn{justify-self:end;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-header{background:rgba(8,7,15,.78);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border-bottom:1px solid var(--line);}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .page-banner{padding:48px 0 32px;}
  .article-layout{padding:36px 0 64px;gap:40px;}
  .article-head h1{font-size:clamp(1.6rem,6vw,2.1rem);}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:20px;margin-top:38px;}
  .article-body h3{font-size:17.5px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-card.is-next{align-items:flex-start;text-align:left;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-brand p{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:559px){
  .brand-text{font-size:.9375rem;}
  .article-cover{border-radius:14px;}
  .article-meta{gap:8px 12px;}
  .article-body table{font-size:.875rem;}
  .article-body th,.article-body td{padding:10px 12px;}
  .empty-article{padding:40px 20px;}
}

/* roulang page: category1 */
/* ============================================================
   设计变量
   ============================================================ */
:root{
  --bg-0:#08070F;
  --bg-1:#0F0D1C;
  --surface:#16142A;
  --surface-2:#1E1B36;
  --brand:#7B4DFF;
  --brand-2:#B14CFF;
  --accent:#24E0C8;
  --hot:#FFB020;
  --danger:#FF5A6E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(177,76,255,.35);
  --text-1:#F4F3FB;
  --text-2:#A7A3C6;
  --text-3:#6C688C;
  --grad:linear-gradient(135deg,#7B4DFF,#B14CFF);
  --grad-soft:linear-gradient(135deg,rgba(123,77,255,.18),rgba(177,76,255,.06));
  --glow:0 0 24px rgba(123,77,255,.45);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 18px 40px rgba(0,0,0,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1280px;
  --pad:40px;
  --gap-section:96px;
  --header-h:88px;
  --header-h-scrolled:64px;
}

/* ============================================================
   Reset / Base
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--text-1)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,button,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;letter-spacing:.01em}
p{margin:0}
svg{display:block}
::selection{background:rgba(123,77,255,.35);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0A16}
::-webkit-scrollbar-thumb{background:#282350;border-radius:8px;border:2px solid #0B0A16}
::-webkit-scrollbar-thumb:hover{background:#3A3170}

/* ============================================================
   排版层级
   ============================================================ */
h1{font-size:clamp(1.9rem,4vw,3rem);line-height:1.25;font-weight:800}
h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35;font-weight:700}
h3{font-size:1.15rem;line-height:1.5;font-weight:700}
.lead{font-size:1.0625rem;line-height:1.8;color:var(--text-2)}
.meta{font-size:.8125rem;line-height:1.5;font-weight:500;letter-spacing:.02em;color:var(--text-3)}

/* ============================================================
   容器与板块节奏
   ============================================================ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}
main{display:block;padding-top:var(--header-h)}
section{position:relative}
.section-gap{padding:var(--gap-section) 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head p{
  margin-top:10px;
  color:var(--text-3);
  font-size:.9375rem;
  line-height:1.75;
  max-width:640px;
}
.section-actions{margin-top:44px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.divider-line{
  height:1px;
  border:0;
  background:linear-gradient(90deg,transparent,rgba(177,76,255,.35),transparent);
  margin:0;
}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:.9375rem;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:var(--grad);
  color:#fff;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#fff;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(123,77,255,.6);
}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 10px rgba(0,0,0,.4)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text-1);
  border-radius:12px;
}
.btn-ghost:hover{
  border-color:var(--brand);
  background:rgba(123,77,255,.12);
  color:var(--text-1);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0)}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--accent);
  font-size:.9375rem;
  font-weight:600;
  background:none;
  border:0;
  padding:6px 0;
  transition:color .2s var(--ease);
}
.btn-text svg{transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--text-1)}
.btn-text:hover svg{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ============================================================
   徽章 / 标签
   ============================================================ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  border-radius:var(--r-pill);
  background:rgba(123,77,255,.12);
  color:#C9B4FF;
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.06em;
  border:1px solid rgba(123,77,255,.28);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.badge .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px rgba(36,224,200,.8);
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:rgba(36,224,200,.1);
  color:var(--accent);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.6;
}
.tag-brand{background:rgba(123,77,255,.14);color:#C9B4FF}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  height:var(--header-h);
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  height:var(--header-h-scrolled);
  background:rgba(8,7,15,.78);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(177,76,255,.35);
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}
.nav-cluster{display:flex;align-items:center;gap:6px}
.nav-cluster.is-left{justify-content:flex-start}
.nav-cluster.is-right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:9px 14px;
  border-radius:8px;
  color:var(--text-2);
  font-size:.9375rem;
  font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--text-1);font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:1px;
  width:60%;
  height:2px;
  transform:translateX(-50%);
  border-radius:2px;
  background:var(--grad);
  box-shadow:0 0 12px rgba(123,77,255,.9);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  color:var(--text-1);
  font-weight:800;
  font-size:1.0625rem;
  letter-spacing:.04em;
  white-space:nowrap;
}
.brand:hover{color:#fff}
.brand-mark{display:inline-flex;filter:drop-shadow(0 0 14px rgba(123,77,255,.55))}
.brand-text{background:linear-gradient(90deg,#FFFFFF,#D6C7FF);-webkit-background-clip:text;background-clip:text;color:transparent}
.header-right{display:flex;align-items:center;justify-content:flex-end;gap:8px}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(123,77,255,.12)}
.icon-btn svg{stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.menu-btn{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  padding:0 10px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.menu-btn span{display:block;height:2px;border-radius:2px;background:var(--text-1);transition:transform .25s var(--ease),opacity .25s var(--ease)}
.menu-btn:hover{border-color:var(--line-strong);background:rgba(123,77,255,.12)}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:100;
  padding:calc(var(--header-h-scrolled) + 24px) var(--pad) 40px;
  background:rgba(22,20,42,.92);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  overflow-y:auto;
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:transform .35s var(--ease),opacity .3s var(--ease),visibility .35s;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:24px;
}
.drawer-title{color:var(--text-1);font-size:.8125rem;letter-spacing:.14em;text-transform:uppercase;font-weight:600}
.drawer-close{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-1);
}
.drawer-close:hover{border-color:var(--line-strong);background:rgba(123,77,255,.12)}
.drawer-close svg{stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:32px}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 14px;
  border-radius:12px;
  color:var(--text-1);
  font-size:1.0625rem;
  font-weight:600;
  border:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-link:hover{background:rgba(255,255,255,.05);border-color:var(--line);padding-left:20px}
.drawer-link.is-active{background:rgba(123,77,255,.14);border-color:rgba(123,77,255,.35)}
.drawer-link .arrow{color:var(--text-3)}
.drawer-sub{display:flex;flex-direction:column;gap:12px;padding-top:24px;border-top:1px solid var(--line)}
.drawer-sub a{font-size:.9375rem;color:var(--text-2)}
.drawer-sub a:hover{color:var(--accent)}

/* ============================================================
   分类页顶部 Hero
   ============================================================ */
.page-hero{
  position:relative;
  padding:112px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(8,7,15,.96) 0%,rgba(8,7,15,.72) 46%,rgba(8,7,15,.35) 100%),
    linear-gradient(0deg,rgba(8,7,15,.98) 4%,rgba(8,7,15,0) 62%);
}
.page-hero-inner{position:relative;z-index:2;max-width:820px}
.page-hero h1{margin:20px 0 16px;max-width:16em}
.page-hero-sub{
  font-size:1.0625rem;
  line-height:1.85;
  color:var(--text-2);
  max-width:640px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.8125rem;
  color:var(--text-3);
  margin-bottom:8px;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}

/* 统计条 */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  margin-top:44px;
  padding:22px 26px;
  border-radius:var(--r-m);
  border:1px solid var(--line);
  background:rgba(22,20,42,.55);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.04);
}
.stat-bar li{display:flex;flex-direction:column;gap:4px;position:relative}
.stat-bar li+li::before{
  content:"";
  position:absolute;
  left:-8px;top:8px;bottom:8px;
  width:1px;
  background:var(--line);
}
.stat-bar strong{
  color:var(--text-1);
  font-size:1.375rem;
  font-weight:800;
  letter-spacing:.02em;
  font-family:"DIN Alternate","Barlow",-apple-system,"PingFang SC",sans-serif;
}
.stat-bar span{font-size:.8125rem;color:var(--text-3);letter-spacing:.02em}

/* ============================================================
   筛选标签行
   ============================================================ */
.filter-section{padding:64px 0 0}
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  padding:14px;
  border-radius:var(--r-m);
  border:1px solid var(--line);
  background:rgba(22,20,42,.55);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-2);
  font-size:.875rem;
  font-weight:600;
  transition:all .2s var(--ease);
}
.chip span{
  font-size:.75rem;
  color:var(--text-3);
  font-family:"DIN Alternate","Barlow",sans-serif;
}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(123,77,255,.08)}
.chip.is-active{
  background:var(--grad);
  border-color:transparent;
  color:#fff;
  box-shadow:var(--glow);
}
.chip.is-active span{color:rgba(255,255,255,.78)}

/* ============================================================
   卡片网格
   ============================================================ */
.grid-section{padding:56px 0 0}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  border-radius:20px;
  overflow:hidden;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:var(--line-strong);
}
.card-cover{
  position:relative;
  display:block;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(135deg,var(--surface),rgba(123,77,255,.28));
}
.card-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.card:hover .card-cover img{transform:scale(1.06)}
.card-cover::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:60%;
  background:linear-gradient(transparent,rgba(8,7,15,.92));
  pointer-events:none;
}
.card-tag{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
  padding:5px 13px;
  border-radius:var(--r-pill);
  background:rgba(36,224,200,.14);
  color:var(--accent);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.04em;
  border:1px solid rgba(36,224,200,.28);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:1.0625rem;line-height:1.55}
.card-body h3 a{color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-body h3 a{color:var(--accent)}
.card-desc{
  color:var(--text-2);
  font-size:.9375rem;
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.8125rem;
  color:var(--text-3);
  letter-spacing:.02em;
}
.card-meta .sep{opacity:.5}
.card-meta time{font-family:"DIN Alternate","Barlow",sans-serif}

/* ============================================================
   相关内容推荐
   ============================================================ */
.related-section{padding:var(--gap-section) 0 0}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.related-card{
  display:flex;
  gap:16px;
  padding:16px;
  border-radius:var(--r-m);
  border:1px solid var(--line);
  background:var(--bg-1);
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.related-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  background:var(--surface);
}
.related-thumb{
  flex:0 0 96px;
  width:96px;
  aspect-ratio:1/1;
  border-radius:12px;
  overflow:hidden;
  background:var(--surface-2);
}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-text{display:flex;flex-direction:column;gap:6px;min-width:0}
.related-text h3{font-size:.9375rem;line-height:1.55}
.related-text h3 a{
  color:var(--text-1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card:hover h3 a{color:var(--accent)}
.related-text p{
  font-size:.8125rem;
  color:var(--text-3);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-section{padding:var(--gap-section) 0 0}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  position:relative;
  width:100%;
  min-height:64px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:18px 48px 18px 22px;
  background:none;
  border:0;
  text-align:left;
  color:var(--text-1);
  font-size:1rem;
  font-weight:600;
  line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-bar{
  position:absolute;
  left:0;
  top:16px;
  bottom:16px;
  width:3px;
  border-radius:3px;
  background:transparent;
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item.is-open .faq-bar{background:var(--brand);box-shadow:0 0 12px rgba(123,77,255,.75)}
.faq-item.is-open .faq-q{color:var(--text-1)}
.faq-icon{
  position:absolute;
  right:18px;
  top:50%;
  width:15px;height:15px;
  transform:translateY(-50%);
  transition:transform .25s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
}
.faq-icon::before{left:0;top:6.5px;width:15px;height:2px}
.faq-icon::after{left:6.5px;top:0;width:2px;height:15px}
.faq-item.is-open .faq-icon{transform:translateY(-50%) rotate(90deg)}
.faq-a{
  padding:0 48px 24px 22px;
  border-top:1px solid var(--line);
  margin-top:0;
}
.faq-a p{
  max-width:560px;
  padding-top:18px;
  color:var(--text-2);
  font-size:.9375rem;
  line-height:1.85;
}
.faq-a p+p{margin-top:14px}

/* ============================================================
   CTA 带
   ============================================================ */
.cta-band{
  position:relative;
  margin-top:var(--gap-section);
  min-height:300px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:min(880px,92vw);
  height:min(880px,92vw);
  transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(123,77,255,.18) 0%,rgba(123,77,255,0) 66%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;padding:64px 0;max-width:720px}
.cta-inner h2{margin-bottom:14px}
.cta-inner p{color:var(--text-2);font-size:.9375rem;line-height:1.8;margin-bottom:32px}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:#0A0916;
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:.875rem;line-height:1.85;max-width:340px}
.footer-col h3{
  font-size:.8125rem;
  letter-spacing:.12em;
  color:var(--text-3);
  font-weight:600;
  margin-bottom:18px;
  text-transform:uppercase;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-link{
  display:inline-block;
  color:var(--text-2);
  font-size:.9375rem;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link:hover{color:var(--accent);transform:translateX(-2px)}
.footer-contact{display:flex;flex-direction:column;gap:16px}
.footer-contact .row{display:flex;gap:12px;align-items:flex-start;font-size:.9375rem;color:var(--text-2)}
.footer-contact .row small{display:block;color:var(--text-3);font-size:.75rem;line-height:1.6;margin-top:2px}
.footer-contact .ic{
  flex:0 0 36px;
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(123,77,255,.12);
  border:1px solid rgba(123,77,255,.22);
  color:#C9B4FF;
}
.footer-contact .ic svg{
  stroke:currentColor;fill:none;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:24px 0 32px;
  border-top:1px solid var(--line);
  font-size:.8125rem;
  color:var(--text-3);
}
.footer-bottom .domain{font-family:"DIN Alternate","Barlow",sans-serif;letter-spacing:.06em;color:var(--text-3)}

/* ============================================================
   入场动画
   ============================================================ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:1440px){
  :root{--pad:48px}
  .page-hero{padding-top:128px}
}
@media (max-width:1199px){
  :root{--gap-section:80px}
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  .footer-col:last-child{grid-column:1/-1}
}
@media (max-width:991px){
  :root{--pad:28px;--gap-section:72px;--header-h:72px}
  .nav-cluster,.header-right .icon-btn{display:none}
  .menu-btn{display:flex}
  .header-inner{grid-template-columns:auto 1fr auto}
  .brand{grid-column:2;justify-self:center}
  .menu-btn{grid-column:3}
  .header-right{grid-column:3}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .related-grid{grid-template-columns:1fr}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px}
  .stat-bar li:nth-child(3)::before{display:none}
  .page-hero{padding:88px 0 56px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col:last-child{grid-column:1/-1}
}
@media (max-width:767px){
  :root{--gap-section:56px}
  .page-hero{padding:80px 0 48px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .card-body{padding:16px}
  .card-body h3{font-size:1rem}
  .section-head{margin-bottom:24px}
  .faq-q{padding:16px 44px 16px 18px;font-size:.9375rem}
  .faq-a{padding:0 40px 20px 18px}
  .cta-band{min-height:260px}
}
@media (max-width:639px){
  :root{--pad:18px}
  .card-grid{grid-template-columns:1fr}
  .related-card{flex-direction:column}
  .related-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/10}
  .stat-bar{grid-template-columns:1fr 1fr;padding:18px}
  .stat-bar li:nth-child(2n)::before{display:block}
  .stat-bar li:nth-child(2n+1)::before{display:none}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:559px){
  :root{--header-h:64px}
  body{font-size:15px}
  .page-hero h1{font-size:1.75rem}
  .btn{width:100%;padding:14px 20px}
  .section-actions .btn{width:100%}
  .filter-bar{padding:12px;gap:10px}
  .chip{padding:9px 16px;font-size:.8125rem}
  .brand-text{font-size:.9375rem}
  .badge{font-size:.6875rem;padding:6px 13px}
}

/* roulang page: category2 */
/* =========================================================
   1. 设计变量
   ========================================================= */
:root{
  --bg-0:#08070F;
  --bg-1:#0F0D1C;
  --surface:#16142A;
  --surface-2:#1E1B36;
  --brand:#7B4DFF;
  --brand-2:#B14CFF;
  --accent:#24E0C8;
  --hot:#FFB020;
  --danger:#FF5A6E;

  --line:rgba(255,255,255,.08);
  --line-strong:rgba(177,76,255,.35);
  --line-soft:rgba(255,255,255,.05);

  --text-1:#F4F3FB;
  --text-2:#A7A3C6;
  --text-3:#6C688C;

  --grad:linear-gradient(135deg,#7B4DFF,#B14CFF);
  --grad-soft:linear-gradient(135deg,rgba(123,77,255,.18),rgba(177,76,255,.06));
  --glow:0 0 24px rgba(123,77,255,.45);
  --glow-lg:0 0 32px rgba(123,77,255,.55);

  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --pill:999px;

  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 18px 40px rgba(0,0,0,.5);

  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Barlow","DIN Alternate","HarmonyOS Sans SC",sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1280px;
}

/* =========================================================
   2. 基础 reset
   ========================================================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(123,77,255,.16),transparent 70%),
    radial-gradient(560px 380px at 92% 8%,rgba(36,224,200,.08),transparent 72%);
  z-index:0;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:var(--text-2);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--text-1)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
svg{display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(123,77,255,.42);color:#fff}

/* =========================================================
   3. 容器与通用排版
   ========================================================= */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
  position:relative;
  z-index:1;
}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(1.4rem,2.4vw,2rem);
  line-height:1.35;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.01em;
}
.section-head .sub{
  margin-top:10px;
  font-size:.9375rem;
  color:var(--text-2);
  max-width:640px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--accent);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--grad);
}
.divider-top{
  border-top:1px solid var(--line);
  position:relative;
}
.divider-top::before{
  content:"";
  position:absolute;
  left:0;top:-1px;width:180px;height:1px;
  background:linear-gradient(90deg,var(--brand),transparent);
}

/* =========================================================
   4. 按钮系统
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  font-size:.9375rem;
  font-weight:600;
  line-height:1;
  padding:15px 30px;
  border-radius:var(--pill);
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad);
  color:#fff;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#fff;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:var(--glow-lg);
}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 10px rgba(0,0,0,.35)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text-1);
  border-radius:12px;
}
.btn-ghost:hover{
  border-color:var(--brand);
  background:rgba(123,77,255,.12);
  color:var(--text-1);
  transform:translateY(-2px);
}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.9375rem;
  font-weight:600;
  color:var(--text-2);
  padding:4px 2px;
}
.btn-text .arrow{transition:transform .2s var(--ease),color .2s var(--ease)}
.btn-text:hover{color:var(--accent)}
.btn-text:hover .arrow{transform:translateX(4px);color:var(--accent)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* =========================================================
   5. 标签 / 徽章
   ========================================================= */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--pill);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.02em;
  background:rgba(123,77,255,.12);
  color:#C3A9FF;
  border:1px solid rgba(123,77,255,.24);
}
.pill--accent{
  background:rgba(36,224,200,.12);
  color:#7FF2E2;
  border-color:rgba(36,224,200,.26);
}
.pill--quiet{
  background:rgba(255,255,255,.05);
  color:var(--text-2);
  border-color:var(--line);
}
.pill--hot{
  background:rgba(255,176,32,.14);
  color:#FFD082;
  border-color:rgba(255,176,32,.28);
}

/* =========================================================
   6. 顶部导航
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:88px;
  display:flex;
  align-items:center;
  background:rgba(8,7,15,0);
  border-bottom:1px solid transparent;
  transition:height .3s var(--ease),background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(8,7,15,.78);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(123,77,255,.22),0 14px 34px rgba(0,0,0,.45);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  width:100%;
}
.nav-cluster{display:flex;align-items:center;gap:4px}
.nav-cluster.is-left{justify-content:flex-start}
.nav-cluster.is-right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:10px 14px;
  border-radius:8px;
  font-size:.9375rem;
  font-weight:500;
  color:var(--text-2);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-link::after{
  content:"";
  position:absolute;
  left:20%;right:20%;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--grad);
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-link.is-active{color:var(--text-1)}
.nav-link.is-active::after{
  opacity:1;
  left:20%;right:20%;
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(123,77,255,.8);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  justify-self:center;
  color:var(--text-1);
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  filter:drop-shadow(0 0 14px rgba(123,77,255,.55));
}
.brand-text{
  font-size:1.125rem;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--text-1);
  white-space:nowrap;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.icon-btn:hover{color:var(--accent);border-color:var(--line-strong);background:rgba(123,77,255,.12)}
.menu-btn{display:none}

/* =========================================================
   7. 移动抽屉
   ========================================================= */
.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  display:none;
}
.drawer.is-open{display:block}
.drawer-mask{
  position:absolute;
  inset:0;
  background:rgba(5,4,10,.7);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.drawer-panel{
  position:relative;
  width:100%;
  max-width:420px;
  margin-left:auto;
  height:100%;
  padding:26px 24px 32px;
  background:rgba(22,20,42,.92);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-left:1px solid rgba(255,255,255,.10);
  display:flex;
  flex-direction:column;
  gap:22px;
  animation:drawerIn .32s var(--ease);
  overflow-y:auto;
}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.4}to{transform:none;opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  display:block;
  padding:14px 16px;
  border-radius:12px;
  font-size:1rem;
  font-weight:600;
  color:var(--text-1);
  border:1px solid var(--line-soft);
  background:rgba(255,255,255,.02);
}
.drawer-nav a:hover{border-color:var(--line-strong);background:rgba(123,77,255,.12)}
.drawer-nav a.is-active{
  background:rgba(123,77,255,.16);
  border-color:var(--line-strong);
  color:#fff;
}
.drawer-foot{
  margin-top:auto;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:.875rem;
  color:var(--text-3);
  display:flex;
  flex-direction:column;
  gap:6px;
}

/* =========================================================
   8. 页面 Hero
   ========================================================= */
.page-hero{
  position:relative;
  min-height:clamp(380px,48vh,520px);
  display:flex;
  align-items:flex-end;
  padding:150px 0 56px;
  background-image:
    linear-gradient(90deg,rgba(8,7,15,.94) 0%,rgba(8,7,15,.62) 52%,rgba(8,7,15,.32) 100%),
    linear-gradient(0deg,rgba(8,7,15,.92) 0%,rgba(8,7,15,.12) 60%),
    url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  background-color:var(--bg-1);
}
.page-hero .container{width:100%}
.crumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.8125rem;
  letter-spacing:.02em;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.5}
.page-hero h1{
  font-size:clamp(1.9rem,4vw,3rem);
  line-height:1.25;
  font-weight:800;
  color:var(--text-1);
  letter-spacing:.01em;
  max-width:16em;
}
.page-hero .lede{
  margin-top:18px;
  max-width:660px;
  font-size:1rem;
  line-height:1.85;
  color:var(--text-2);
}
.stat-bar{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.stat-bar li{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:140px;
  padding:14px 18px;
  border-radius:var(--r-m);
  background:rgba(22,20,42,.55);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.10);
}
.stat-bar strong{
  font-family:var(--font-num);
  font-size:1.125rem;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.02em;
}
.stat-bar span{font-size:.8125rem;color:var(--text-3);letter-spacing:.02em}

/* =========================================================
   9. 分类主体布局：左侧索栏 + 右侧宽行条目
   ========================================================= */
.cat-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.index-side{
  position:sticky;
  top:100px;
  padding:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  box-shadow:var(--shadow-1);
}
.index-side h2{
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:12px;
  padding-left:12px;
}
.index-link{
  position:relative;
  display:block;
  padding:11px 12px 11px 16px;
  border-radius:8px;
  font-size:.9375rem;
  color:var(--text-2);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.index-link::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.index-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.index-link.is-active{color:var(--text-1);background:rgba(123,77,255,.12)}
.index-link.is-active::before{background:var(--brand);box-shadow:0 0 12px rgba(123,77,255,.75)}
.index-note{
  margin-top:16px;
  padding:14px 12px 0;
  border-top:1px solid var(--line);
  font-size:.8125rem;
  line-height:1.7;
  color:var(--text-3);
}

.rule-group{margin-bottom:64px}
.rule-group:last-child{margin-bottom:0}
.rule-group > h2{
  font-size:clamp(1.25rem,2vw,1.6rem);
  font-weight:700;
  color:var(--text-1);
  line-height:1.4;
}
.rule-group > .group-desc{
  margin-top:10px;
  font-size:.9375rem;
  color:var(--text-2);
  max-width:720px;
}
.rule-list{margin-top:26px}
.rule-row{
  display:grid;
  grid-template-columns:160px minmax(0,1fr) 36px;
  gap:24px;
  align-items:center;
  padding:26px 12px;
  border-top:1px solid var(--line);
  border-radius:12px;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.rule-list .rule-row:last-child{border-bottom:1px solid var(--line)}
.rule-row:hover{background:rgba(255,255,255,.03)}
.rule-thumb{
  width:160px;
  aspect-ratio:16/10;
  border-radius:12px;
  overflow:hidden;
  background:linear-gradient(135deg,var(--surface),rgba(123,77,255,.22));
  border:1px solid var(--line);
}
.rule-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.rule-row:hover .rule-thumb img{transform:scale(1.06)}
.rule-body{min-width:0}
.rule-body h3{
  margin-top:10px;
  font-size:1.0625rem;
  font-weight:700;
  color:var(--text-1);
  line-height:1.5;
  transition:color .2s var(--ease);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rule-row:hover .rule-body h3{color:var(--accent)}
.rule-body p{
  margin-top:8px;
  font-size:.9375rem;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rule-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 18px;
  margin-top:12px;
  font-size:.8125rem;
  font-weight:500;
  letter-spacing:.02em;
  color:var(--text-3);
}
.rule-meta .code{font-family:var(--font-num);color:#C3A9FF}
.rule-arrow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-3);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.rule-row:hover .rule-arrow{
  color:var(--accent);
  border-color:rgba(36,224,200,.5);
  background:rgba(36,224,200,.10);
  transform:translateX(4px);
}

/* =========================================================
   10. 图文说明区块
   ========================================================= */
.split{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;
  align-items:center;
}
.split-media{
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  aspect-ratio:16/10;
  background:var(--surface);
}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-copy h2{
  font-size:clamp(1.4rem,2.4vw,2rem);
  line-height:1.35;
  font-weight:700;
  color:var(--text-1);
  margin-top:12px;
}
.split-copy p{margin-top:16px;font-size:.9375rem;line-height:1.85;color:var(--text-2)}
.step-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.step-list li{
  display:grid;
  grid-template-columns:36px minmax(0,1fr);
  gap:14px;
  align-items:start;
  padding:16px 18px;
  border-radius:var(--r-m);
  background:var(--surface);
  border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.step-list li:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.step-list .num{
  font-family:var(--font-num);
  font-size:1rem;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.02em;
  line-height:1.6;
}
.step-list h3{font-size:1rem;font-weight:700;color:var(--text-1);line-height:1.6}
.step-list p{margin-top:4px;font-size:.875rem;line-height:1.7;color:var(--text-2)}

/* =========================================================
   11. FAQ 手风琴
   ========================================================= */
.faq-list{
  border-top:1px solid var(--line);
  margin-top:8px;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  min-height:64px;
  padding:14px 12px 14px 20px;
  text-align:left;
  font-size:1rem;
  font-weight:600;
  color:var(--text-1);
  transition:color .2s var(--ease),background-color .2s var(--ease);
  border-radius:10px;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item.is-open .faq-q::before{background:var(--brand);box-shadow:0 0 12px rgba(123,77,255,.7)}
.faq-q:hover{color:var(--accent);background:rgba(255,255,255,.03)}
.faq-icon{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:1rem;
  line-height:1;
  transition:transform .3s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-icon{
  transform:rotate(90deg);
  color:var(--accent);
  border-color:rgba(36,224,200,.45);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s var(--ease);
}
.faq-a-inner{
  max-width:560px;
  padding:18px 12px 26px 20px;
  border-top:1px solid var(--line);
  font-size:.9375rem;
  line-height:1.85;
  color:var(--text-2);
}
.faq-a-inner p + p{margin-top:14px}

/* =========================================================
   12. CTA 带
   ========================================================= */
.cta-band{
  position:relative;
  padding:88px 0;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  overflow:hidden;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:680px;height:680px;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(123,77,255,.18),transparent 66%);
  pointer-events:none;
}
.cta-band .container{display:flex;flex-direction:column;align-items:center;gap:20px}
.cta-band h2{
  font-size:clamp(1.4rem,2.4vw,2rem);
  font-weight:700;
  color:var(--text-1);
  line-height:1.35;
}
.cta-band p{max-width:560px;font-size:.9375rem;color:var(--text-2)}

/* =========================================================
   13. 相关内容推荐
   ========================================================= */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rec-card{
  display:flex;
  flex-direction:column;
  border-radius:20px;
  overflow:hidden;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.rec-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-2);
  border-color:var(--line-strong);
}
.rec-cover{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(135deg,var(--surface),rgba(123,77,255,.22));
}
.rec-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rec-card:hover .rec-cover img{transform:scale(1.06)}
.rec-cover::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:60%;
  background:linear-gradient(transparent,rgba(8,7,15,.92));
}
.rec-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.rec-body h3{
  font-size:1rem;
  font-weight:700;
  color:var(--text-1);
  line-height:1.55;
  transition:color .2s var(--ease);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-card:hover .rec-body h3{color:var(--accent)}
.rec-body p{
  font-size:.875rem;
  line-height:1.7;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:2px;
  font-size:.8125rem;
  color:var(--text-3);
  letter-spacing:.02em;
}
.rec-actions{display:flex;justify-content:center;margin-top:40px}

/* =========================================================
   14. 页脚
   ========================================================= */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr);
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.875rem;line-height:1.8;color:var(--text-3);max-width:340px}
.footer-col h3{
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--text-1);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:.9375rem;color:var(--text-2);display:inline-block}
.footer-link.is-forward{transition:transform .2s var(--ease),color .2s var(--ease)}
.footer-link.is-forward:hover{transform:translateX(-2px);color:var(--accent)}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact .row{display:grid;grid-template-columns:20px minmax(0,1fr);gap:12px;align-items:start;font-size:.875rem;color:var(--text-2)}
.footer-contact .ic{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:20px;height:20px;
  border-radius:6px;
  color:var(--accent);
}
.footer-contact small{display:block;font-size:.75rem;color:var(--text-3);margin-top:2px}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 0;
  border-top:1px solid var(--line);
  font-size:.8125rem;
  color:var(--text-3);
}
.footer-bottom .domain{font-family:var(--font-num);letter-spacing:.04em;color:var(--text-3)}

/* =========================================================
   15. 入场动效
   ========================================================= */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* =========================================================
   16. 响应式
   ========================================================= */
@media (max-width:1439px){
  .container{padding:0 40px}
}
@media (max-width:1199px){
  .cat-layout{grid-template-columns:210px minmax(0,1fr);gap:32px}
  .footer-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);gap:32px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  .container{padding:0 28px}
  .section{padding:72px 0}
  .site-header{height:72px}
  .nav-cluster{display:none}
  .menu-btn{display:inline-flex}
  .header-inner{grid-template-columns:auto 1fr auto}
  .brand{grid-column:2}
  .nav-cluster.is-right{display:flex;gap:8px}
  .nav-cluster.is-right .nav-link{display:none}
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .index-side{
    position:sticky;
    top:76px;
    display:flex;
    gap:6px;
    padding:10px;
    overflow-x:auto;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
  }
  .index-side::-webkit-scrollbar{display:none}
  .index-side h2{display:none}
  .index-link{flex:none;padding:9px 14px;border-radius:var(--pill);background:rgba(255,255,255,.04);font-size:.875rem}
  .index-link::before{display:none}
  .index-note{display:none}
  .split{grid-template-columns:minmax(0,1fr);gap:32px}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col:last-child{grid-column:span 2}
  .page-hero{padding:130px 0 48px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .page-hero{min-height:70vh;padding:120px 0 40px}
  .stat-bar li{min-width:calc(50% - 7px);flex:1 1 auto}
  .rule-row{
    grid-template-columns:112px minmax(0,1fr);
    gap:16px;
    padding:20px 8px;
    align-items:start;
  }
  .rule-thumb{width:112px}
  .rule-arrow{display:none}
  .rec-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-col:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:559px){
  body{font-size:15px}
  .brand-text{font-size:1rem}
  .hero-actions,.page-hero .btn{width:100%}
  .rule-row{grid-template-columns:84px minmax(0,1fr);gap:14px}
  .rule-thumb{width:84px;aspect-ratio:1/1}
  .drawer-panel{max-width:none}
  .stat-bar li{min-width:100%}
  .cta-band{padding:64px 0}
}

/* roulang page: category3 */
:root{
  --bg-0:#08070F;
  --bg-1:#0F0D1C;
  --surface:#16142A;
  --surface-2:#1E1B36;
  --brand:#7B4DFF;
  --brand-2:#B14CFF;
  --accent:#24E0C8;
  --hot:#FFB020;
  --danger:#FF5A6E;
  --text-1:#F4F3FB;
  --text-2:#A7A3C6;
  --text-3:#6C688C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(177,76,255,.35);
  --grad:linear-gradient(135deg,#7B4DFF,#B14CFF);
  --glow:0 0 24px rgba(123,77,255,.45);
  --glow-lg:0 0 32px rgba(123,77,255,.55);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 18px 40px rgba(0,0,0,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:88px;
  --header-h-sm:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--text-2);text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease)}
a:hover{color:var(--text-1)}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;border:0;background:none;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.section{padding:96px 0;position:relative}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:700;letter-spacing:.01em}
.section-head .sub{margin-top:10px;font-size:.9375rem;color:var(--text-3);max-width:640px}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;font-weight:600;color:var(--text-1);white-space:nowrap}
.text-link .arw{display:inline-block;transition:transform .2s var(--ease),color .2s var(--ease)}
.text-link:hover{color:var(--accent)}
.text-link:hover .arw{transform:translateX(4px);color:var(--accent)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--header-h);
  display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(8,7,15,.72),rgba(8,7,15,0));
  transition:height .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  height:var(--header-h-sm);
  background:rgba(8,7,15,.78);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(177,76,255,.28);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  width:100%;
}
.nav-cluster{display:flex;align-items:center;gap:6px}
.nav-cluster.is-left{justify-content:flex-start}
.nav-cluster.is-right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;
  border-radius:8px;
  font-size:.9375rem;
  font-weight:500;
  color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-link::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);opacity:0;transform:scaleX(.4);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-link.is-active{color:var(--text-1);font-weight:600}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);box-shadow:var(--glow)}
.brand{
  display:inline-flex;align-items:center;gap:12px;
  padding:6px 10px;border-radius:14px;
  transition:transform .2s var(--ease);
}
.brand:hover{transform:translateY(-1px)}
.brand-mark{display:inline-flex;filter:drop-shadow(0 0 14px rgba(123,77,255,.5))}
.brand-text{
  font-size:1.0625rem;font-weight:800;letter-spacing:.02em;
  color:var(--text-1);white-space:nowrap;
}
.header-tools{display:flex;align-items:center;gap:8px;justify-content:flex-end}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(123,77,255,.14);transform:translateY(-2px)}
.nav-burger{display:none}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:130;
  background:rgba(22,20,42,.92);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.10);
  transform:translateY(-100%);
  transition:transform .34s var(--ease);
  display:flex;flex-direction:column;
  padding:22px 18px 32px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-title{font-size:1rem;font-weight:700;color:var(--text-1)}
.drawer-group{margin-bottom:26px}
.drawer-group h3{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);margin-bottom:12px;font-weight:600}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;margin-bottom:8px;
  border-radius:var(--r-m);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  color:var(--text-1);font-weight:500;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.drawer-link:hover{border-color:var(--line-strong);background:rgba(123,77,255,.14)}
.drawer-link.is-active{border-color:var(--line-strong);background:rgba(123,77,255,.18)}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);font-size:.8125rem;color:var(--text-3);line-height:1.8}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 28px;
  border-radius:var(--pill);
  font-size:.9375rem;font-weight:600;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--glow-lg);color:#fff}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 10px rgba(0,0,0,.35)}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border:1px solid rgba(255,255,255,.18);
  border-radius:12px;
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(123,77,255,.12);color:var(--text-1);transform:translateY(-2px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- pills & badges ---------- */
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--pill);
  font-size:.75rem;font-weight:600;letter-spacing:.02em;
  background:rgba(123,77,255,.12);color:#C7AEFF;
  border:1px solid rgba(123,77,255,.28);
}
.pill-accent{background:rgba(36,224,200,.12);color:var(--accent);border-color:rgba(36,224,200,.28)}
.pill-hot{background:rgba(255,176,32,.14);color:var(--hot);border-color:rgba(255,176,32,.3)}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--pill);
  font-size:.75rem;
  background:rgba(36,224,200,.1);
  color:var(--accent);
  border:1px solid rgba(36,224,200,.22);
}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  min-height:clamp(460px,62vh,640px);
  display:flex;align-items:flex-end;
  padding:calc(var(--header-h) + 72px) 0 72px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(8,7,15,.94) 0%,rgba(8,7,15,.72) 46%,rgba(8,7,15,.25) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(8,7,15,.92) 0%,rgba(8,7,15,.1) 62%);
}
.cat-hero .container{position:relative;z-index:2}
.hero-inner{max-width:760px}
.hero-inner h1{
  margin:20px 0 18px;
  font-size:clamp(1.9rem,4vw,3rem);
  font-weight:800;line-height:1.25;
}
.hero-inner .hero-sub{
  font-size:1.0625rem;color:var(--text-2);max-width:620px;line-height:1.85;
}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin:22px 0 30px;font-size:.8125rem;color:var(--text-3);letter-spacing:.02em;
}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);display:inline-block}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
  margin-top:52px;max-width:880px;
}
.stat{
  padding:18px 20px;border-radius:var(--r-m);
  background:rgba(22,20,42,.55);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.10);
}
.stat .num{font-size:1.5rem;font-weight:800;color:var(--text-1);line-height:1.2;font-variant-numeric:tabular-nums}
.stat .num em{font-style:normal;font-size:.875rem;color:var(--accent);margin-left:4px;font-weight:600}
.stat .lbl{font-size:.8125rem;color:var(--text-3);margin-top:6px}

/* ---------- ranking list ---------- */
.rank-wrap{border-top:1px solid var(--line)}
.rank-item{
  display:grid;
  grid-template-columns:96px 1fr auto;
  align-items:center;
  gap:24px;
  min-height:88px;
  padding:18px 8px;
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.rank-item:hover{background:rgba(123,77,255,.06);transform:translateX(4px)}
.rank-num{
  font-size:2.25rem;font-weight:800;line-height:1;
  color:rgba(244,243,251,.18);
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  transition:color .25s var(--ease),opacity .25s var(--ease);
}
.rank-item:hover .rank-num{color:var(--brand-2)}
.rank-num.is-top{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;opacity:.9;
}
.rank-item:hover .rank-num.is-top{opacity:1;filter:drop-shadow(0 0 14px rgba(123,77,255,.5))}
.rank-body h3{font-size:1.0625rem;font-weight:700;margin-bottom:6px}
.rank-body p{font-size:.875rem;color:var(--text-3);line-height:1.7;max-width:760px}
.rank-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.rank-go{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);
  color:var(--text-3);
  transition:color .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
.rank-item:hover .rank-go{color:var(--accent);border-color:rgba(36,224,200,.4);background:rgba(36,224,200,.1);transform:translateX(4px)}

/* ---------- scope cards ---------- */
.divider-grad{height:1px;background:linear-gradient(90deg,rgba(123,77,255,0),rgba(177,76,255,.5),rgba(36,224,200,.25),rgba(123,77,255,0))}
.scope-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.scope-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  padding:28px 26px 30px;
  box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.scope-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.scope-card .sc-ic{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(123,77,255,.14);
  border:1px solid rgba(123,77,255,.28);
  color:#C7AEFF;margin-bottom:18px;
}
.scope-card h3{font-size:1.0625rem;margin-bottom:10px}
.scope-card p{font-size:.9375rem;color:var(--text-2);line-height:1.8}
.scope-card ul{margin-top:16px;display:grid;gap:10px}
.scope-card li{
  position:relative;padding-left:18px;font-size:.875rem;color:var(--text-3);
}
.scope-card li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  border-radius:2px;background:rgba(36,224,200,.5);
}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;counter-reset:flow}
.flow-step{
  position:relative;
  padding:26px 22px 28px;
  border-radius:var(--r-m);
  background:var(--bg-1);
  border:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.flow-step:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--surface)}
.flow-step .step-no{
  font-size:.75rem;font-weight:700;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;
}
.flow-step h3{font-size:1rem;margin:12px 0 10px}
.flow-step p{font-size:.875rem;color:var(--text-3);line-height:1.75}
.flow-step::after{
  content:"";position:absolute;top:36px;right:-16px;width:8px;height:8px;
  border-top:1px solid rgba(177,76,255,.5);border-right:1px solid rgba(177,76,255,.5);
  transform:rotate(45deg);
}
.flow-step:last-child::after{display:none}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;min-height:64px;padding:14px 0 14px 20px;
  text-align:left;font-size:1rem;font-weight:600;color:var(--text-1);
  transition:color .2s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:26px;border-radius:2px;
  background:transparent;transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item.is-open .faq-q::before{background:var(--grad);box-shadow:var(--glow)}
.faq-q:hover{color:var(--accent)}
.faq-plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  color:var(--text-3);transition:transform .3s var(--ease),color .3s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-plus::before{left:50%;top:2px;width:1.5px;height:18px;transform:translateX(-50%)}
.faq-plus::after{top:50%;left:2px;height:1.5px;width:18px;transform:translateY(-50%)}
.faq-item.is-open .faq-plus{transform:rotate(90deg);color:var(--accent)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .4s var(--ease);
  border-top:1px solid transparent;
}
.faq-item.is-open .faq-a{border-top-color:var(--line)}
.faq-a-inner{
  max-width:560px;padding:18px 0 26px 20px;
  font-size:.9375rem;color:var(--text-2);line-height:1.85;
}

/* ---------- related cards ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rcard{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.rcard .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.rcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rcard:hover .thumb img{transform:scale(1.06)}
.rcard .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(8,7,15,.92) 100%);
}
.rcard .rc-body{padding:20px 22px 24px}
.rcard h3{font-size:1rem;line-height:1.5;margin:12px 0 8px;transition:color .25s var(--ease)}
.rcard:hover h3{color:var(--accent)}
.rcard p{font-size:.875rem;color:var(--text-3);line-height:1.75}
.rcard .rc-meta{margin-top:14px;font-size:.8125rem;color:var(--text-3);letter-spacing:.02em}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  padding:96px 0;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  overflow:hidden;
  text-align:center;
}
.cta-band::before{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(880px,90vw);height:min(880px,90vw);
  background:radial-gradient(circle,rgba(123,77,255,.18) 0%,rgba(123,77,255,0) 62%);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:2}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,2rem);margin-bottom:14px}
.cta-band p{font-size:1rem;color:var(--text-2);max-width:620px;margin:0 auto 30px}

/* ---------- footer ---------- */
.site-footer{
  background:#06050C;
  border-top:1px solid var(--line);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.875rem;color:var(--text-3);line-height:1.85;max-width:320px}
.footer-col h3{
  font-size:.8125rem;font-weight:700;letter-spacing:.08em;
  color:var(--text-1);margin-bottom:18px;
}
.footer-col ul{display:grid;gap:12px}
.footer-link{
  display:inline-flex;align-items:center;
  font-size:.875rem;color:var(--text-2);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link.is-forward:hover{transform:translateX(2px);color:var(--accent)}
.footer-contact{display:grid;gap:16px}
.footer-contact .row{display:flex;gap:12px;font-size:.875rem;color:var(--text-2);line-height:1.6}
.footer-contact .ic{
  flex:0 0 auto;width:32px;height:32px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(123,77,255,.14);
  border:1px solid rgba(123,77,255,.24);
  color:#C7AEFF;
}
.footer-contact small{display:block;color:var(--text-3);font-size:.75rem;margin-top:2px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:24px;font-size:.8125rem;color:var(--text-3);flex-wrap:wrap;
}
.footer-bottom .domain{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 28px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:992px){
  .nav-cluster,.header-tools .icon-btn.is-search,.header-tools .nav-link{display:none}
  .nav-burger{display:inline-flex}
  .header-inner{grid-template-columns:auto 1fr auto}
  .brand-text{font-size:1rem}
  .scope-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-step::after{display:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .cat-hero{padding:calc(var(--header-h) + 48px) 0 56px;min-height:70vh}
  .rank-item{grid-template-columns:56px 1fr;gap:16px;padding:16px 4px}
  .rank-num{font-size:1.75rem}
  .rank-go{display:none}
  .scope-grid,.related-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .cta-band{padding:72px 0}
}
@media (max-width:559px){
  .hero-stats{grid-template-columns:1fr;gap:12px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-inner h1{font-size:1.75rem}
  .hero-inner .hero-sub{font-size:.9375rem}
  .flow{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .rank-num{font-size:1.5rem}
}