/* roulang page: index */
:root{
  --bg:#0B0716;
  --panel:#140E28;
  --card:#1B1433;
  --card-2:#221A3F;
  --purple:#7C3AED;
  --purple-2:#9B6BFF;
  --purple-soft:rgba(124,58,237,.14);
  --cyan:#22D3EE;
  --cyan-soft:rgba(34,211,238,.12);
  --lime:#D9F24B;
  --text:#F5F3FF;
  --text-2:#C9C2E4;
  --text-3:#8E86AD;
  --border:rgba(124,58,237,.28);
  --border-2:rgba(124,58,237,.5);
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --r-xs:8px;
  --r-sm:10px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.5);
  --container:1200px;
  --nav-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;inset:0;
  background:
    radial-gradient(900px 520px at 82% -8%,rgba(124,58,237,.26),transparent 62%),
    radial-gradient(760px 460px at 4% 12%,rgba(34,211,238,.14),transparent 60%);
  pointer-events:none;z-index:0;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
h1,h2,h3,h4{line-height:1.28;font-weight:700;letter-spacing:.2px}
::selection{background:rgba(124,58,237,.55);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;position:relative;z-index:1}
@media (min-width:1280px){.container{max-width:1280px}}
.section{padding:88px 0}
.section-sm{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;color:var(--cyan);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);border-radius:2px}
h2.h-sec{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.h-sec span{color:var(--cyan)}
.lead{color:var(--text-2);font-size:16.5px;max-width:720px}

/* ---------- 倒计时通栏 ---------- */
.ticker{
  background:linear-gradient(90deg,rgba(124,58,237,.32),rgba(34,211,238,.16) 55%,rgba(217,242,75,.12));
  border-bottom:1px solid var(--border);
  position:relative;z-index:55;
}
.ticker-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:46px;padding:6px 0;
}
.ticker-left{display:flex;align-items:center;gap:12px;min-width:0}
.ticker-label{
  flex:none;font-size:12px;font-weight:700;letter-spacing:1px;
  color:#160B2E;background:var(--lime);
  padding:3px 10px;border-radius:var(--r-pill);
}
.ticker-text{
  font-size:13.5px;color:var(--text-2);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.ticker-right{display:flex;align-items:center;gap:10px;flex:none}
.ticker-right .small{font-size:12.5px;color:var(--text-3)}
.cd{
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
  font-variant-numeric:tabular-nums;
  font-size:17px;font-weight:700;letter-spacing:1px;color:var(--lime);
  background:rgba(11,7,22,.6);border:1px solid rgba(217,242,75,.35);
  border-radius:var(--r-xs);padding:2px 10px;
}
.cd-state{font-size:12.5px;color:var(--text-3)}
.cd-state.is-over{color:var(--err)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,7,22,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-stuck{
  background:rgba(7,4,16,.96);
  border-bottom-color:var(--border);
  box-shadow:0 12px 30px rgba(0,0,0,.45);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--purple),var(--cyan));
  display:grid;place-items:center;font-weight:800;font-size:15px;color:#0B0716;
  box-shadow:0 6px 18px rgba(124,58,237,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15.5px;font-weight:700;letter-spacing:.3px}
.brand-text i{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:1px}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--text-2);
  padding:6px 12px;border-radius:var(--r-xs);
  transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--text);background:rgba(124,58,237,.16)}
.nav-menu a.is-active{color:var(--text);font-weight:600}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:linear-gradient(90deg,var(--purple-2),var(--cyan));border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:14px;flex:none}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:rgba(27,20,51,.85);
  border:1px solid var(--border);border-radius:var(--r-pill);
  padding:0 6px 0 14px;height:40px;width:230px;
  transition:border-color .2s ease,box-shadow .2s ease,width .25s ease;
}
.search-box:focus-within{border-color:var(--border-2);box-shadow:0 0 0 3px rgba(124,58,237,.18);width:260px}
.search-box svg{flex:none;width:16px;height:16px;stroke:var(--text-3)}
.search-box input{
  flex:1;min-width:0;background:none;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3)}
.search-box button{
  flex:none;height:30px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:#0B0716;
  background:var(--cyan);transition:filter .2s ease;
}
.search-box button:hover{filter:brightness(1.08)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(120deg,var(--purple),var(--purple-2) 45%,var(--cyan));
  color:#fff;box-shadow:0 10px 26px rgba(124,58,237,.42);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 14px 32px rgba(124,58,237,.55)}
.btn-ghost{
  background:rgba(124,58,237,.08);border-color:var(--border-2);color:var(--text);
}
.btn-ghost:hover{background:rgba(124,58,237,.2);border-color:var(--purple-2)}
.btn-lime{
  background:var(--lime);color:#160B2E;box-shadow:0 10px 26px rgba(217,242,75,.24);
}
.btn-lime:hover{filter:brightness(1.05)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

/* 抽屉 */
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:rgba(27,20,51,.7);
  align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:.2s}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.2s;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(320px,86vw);
  background:#0E0A1F;border-left:1px solid var(--border);
  z-index:80;transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,3,12,.68);z-index:75;
  opacity:0;visibility:hidden;transition:.3s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:38px;height:38px;border-radius:var(--r-xs);border:1px solid var(--border);color:var(--text-2);font-size:18px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-sm);font-size:15.5px;color:var(--text-2);
  border:1px solid transparent;transition:.2s;
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:rgba(124,58,237,.16);border-color:var(--border);color:var(--text)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 84px;min-height:600px}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(124,58,237,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(124,58,237,.09) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(closest-side at 65% 40%,#000 30%,transparent 88%);
  -webkit-mask-image:radial-gradient(closest-side at 65% 40%,#000 30%,transparent 88%);
  pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:52% 48%;gap:40px;align-items:center;
}
.hero-copy{max-width:620px}
.hero h1{
  font-size:clamp(30px,4.2vw,54px);
  line-height:1.2;margin-bottom:18px;
  background:linear-gradient(100deg,#FFFFFF 22%,#D6C8FF 62%,#8FF3FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero h1 em{font-style:normal;color:var(--lime);-webkit-text-fill-color:var(--lime)}
.hero-sub{
  font-size:17.5px;color:var(--text-2);line-height:1.75;margin-bottom:28px;max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges span{
  font-size:13px;color:var(--text-2);
  border:1px solid var(--border);background:rgba(27,20,51,.7);
  border-radius:var(--r-pill);padding:6px 14px;
}
.hero-badges span b{color:var(--lime);font-weight:700}
.hero-visual{position:relative}
.hero-visual .frame{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--border-2);
  box-shadow:0 24px 60px rgba(0,0,0,.55);
  background:var(--card);
}
.hero-visual .frame img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;opacity:.92}
.hero-visual .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,7,22,.05),rgba(11,7,22,.72));
}
.hud{
  position:absolute;display:flex;align-items:center;gap:10px;
  background:rgba(15,10,32,.9);border:1px solid var(--border-2);
  border-radius:var(--r);padding:10px 14px;backdrop-filter:blur(8px);
  box-shadow:var(--shadow);font-size:13px;color:var(--text-2);
}
.hud b{color:var(--text);font-size:14px}
.hud-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.16)}
.hud-1{top:22px;left:-14px}
.hud-2{bottom:26px;right:-10px}
.hud-3{bottom:-16px;left:36px;background:rgba(217,242,75,.94);color:#160B2E;border-color:transparent}
.hud-3 b{color:#160B2E}

/* ---------- 卖点 ---------- */
.split-2{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
.feature-list{display:flex;flex-direction:column;gap:6px}
.feature-item{
  display:grid;grid-template-columns:64px 1fr;gap:18px;
  padding:22px 4px;border-top:1px solid rgba(124,58,237,.18);
  transition:background .25s ease,padding .25s ease;
  border-radius:var(--r);
}
.feature-item:last-child{border-bottom:1px solid rgba(124,58,237,.18)}
.feature-item:hover{background:rgba(124,58,237,.07);padding-left:14px;padding-right:14px}
.feature-num{
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:22px;font-weight:700;color:rgba(217,242,75,.85);
  font-variant-numeric:tabular-nums;line-height:1.4;
}
.feature-item h3{font-size:19px;margin-bottom:6px}
.feature-item p{color:var(--text-2);font-size:15px;line-height:1.7}
.feature-aside{position:sticky;top:calc(var(--nav-h) + 24px)}
.aside-card{
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:linear-gradient(180deg,var(--card),var(--panel));
  overflow:hidden;box-shadow:var(--shadow);
}
.aside-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.aside-body{padding:20px}
.aside-body h4{font-size:16px;margin-bottom:12px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:6px}
.stat{
  background:rgba(11,7,22,.6);border:1px solid var(--border);
  border-radius:var(--r);padding:12px 10px;text-align:center;
}
.stat b{
  display:block;font-size:20px;color:var(--cyan);
  font-variant-numeric:tabular-nums;font-weight:700;
}
.stat span{font-size:12.5px;color:var(--text-3)}
.aside-note{
  margin-top:16px;font-size:13px;color:var(--text-3);
  border-left:2px solid var(--border-2);padding-left:12px;line-height:1.7;
}

/* ---------- 图墙 ---------- */
.wall{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.wall-item{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--border);background:var(--card);
  grid-column:span 4;min-height:236px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.wall-item.span-8{grid-column:span 8}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;opacity:.86}
.wall-item:hover{transform:translateY(-3px);border-color:var(--border-2);box-shadow:var(--shadow-hover)}
.wall-item:hover img{transform:scale(1.03);opacity:1}
.wall-cap{
  position:absolute;inset:auto 0 0 0;padding:18px;
  background:linear-gradient(180deg,transparent,rgba(11,7,22,.92));
}
.wall-cap h3{font-size:17px;margin-bottom:4px}
.wall-cap p{font-size:13.5px;color:var(--text-2)}
.wall-tag{
  position:absolute;top:14px;left:14px;
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(11,7,22,.78);border:1px solid var(--border-2);color:var(--cyan);
  backdrop-filter:blur(6px);
}
.wall-tag.lime{background:var(--lime);color:#160B2E;border-color:transparent}

/* ---------- CTA ---------- */
.cta-band{
  border:1px solid var(--border-2);border-radius:22px;overflow:hidden;
  background:linear-gradient(120deg,rgba(124,58,237,.22),rgba(34,211,238,.1) 60%,rgba(217,242,75,.08));
  display:grid;grid-template-columns:1.1fr .9fr;gap:32px;padding:44px;position:relative;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.28;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:24px 24px;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px}
.cta-copy p{color:var(--text-2);font-size:15.5px;margin-bottom:22px;max-width:520px}
.steps{display:flex;flex-wrap:wrap;gap:10px}
.steps span{
  font-size:13px;color:var(--text-2);border:1px dashed var(--border-2);
  border-radius:var(--r-pill);padding:6px 14px;background:rgba(11,7,22,.4);
}
.form-card{
  position:relative;z-index:1;background:rgba(11,7,22,.72);
  border:1px solid var(--border);border-radius:var(--r-lg);padding:26px;
  backdrop-filter:blur(8px);box-shadow:var(--shadow);
}
.form-card h3{font-size:17px;margin-bottom:6px}
.form-card .tip{font-size:13px;color:var(--text-3);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:7px}
.field input{
  width:100%;height:44px;border-radius:var(--r-sm);
  background:rgba(27,20,51,.85);border:1px solid var(--border);
  padding:0 14px;font-size:15px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{border-color:var(--purple-2);box-shadow:0 0 0 3px rgba(124,58,237,.2)}
.field.has-error input{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.16)}
.field .err-msg{display:none;font-size:12.5px;color:var(--err);margin-top:6px}
.field.has-error .err-msg{display:block}
.field-row{display:grid;grid-template-columns:1fr auto;gap:10px}
.field-row button{height:44px;padding:0 16px;border-radius:var(--r-sm);border:1px solid var(--border-2);background:rgba(124,58,237,.14);color:var(--text);font-size:14px}
.field-row button:hover{background:rgba(124,58,237,.26)}
.field-row button[disabled]{opacity:.5;cursor:not-allowed}
.check{display:flex;align-items:flex-start;gap:10px;margin:16px 0 18px;font-size:13px;color:var(--text-2);line-height:1.6}
.check input{width:18px;height:18px;flex:none;margin-top:2px;accent-color:var(--purple)}
.check.has-error{color:var(--err)}
.form-msg{display:none;margin-top:14px;font-size:14px;border-radius:var(--r-sm);padding:10px 14px}
.form-msg.ok{display:block;background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.4);color:var(--ok)}
.form-msg.bad{display:block;background:rgba(248,113,113,.12);border:1px solid rgba(248,113,113,.4);color:var(--err)}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.post-card:hover{transform:translateY(-3px);border-color:var(--border-2);box-shadow:var(--shadow-hover)}
.post-cover{position:relative;display:block;overflow:hidden}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .45s ease}
.post-card:hover .post-cover img{transform:scale(1.04)}
.badge{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(124,58,237,.18);border:1px solid var(--border-2);color:var(--text-2);
}
.badge-solid{
  position:absolute;top:12px;left:12px;
  background:rgba(11,7,22,.82);color:var(--cyan);
  backdrop-filter:blur(6px);
}
.post-body{display:flex;flex-direction:column;flex:1;padding:20px}
.post-body h3{font-size:17.5px;line-height:1.5;margin-bottom:10px}
.post-card:hover h3{color:var(--cyan)}
.post-excerpt{
  color:var(--text-2);font-size:14.5px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;
}
.post-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);border-top:1px solid rgba(124,58,237,.18);padding-top:12px;
}
.post-more{color:var(--cyan);font-weight:600}
.empty-state{
  grid-column:1/-1;text-align:center;padding:52px 24px;
  border:1px dashed var(--border-2);border-radius:var(--r-lg);
  background:rgba(27,20,51,.5);
}
.empty-state p{color:var(--text-2);margin-bottom:18px}
.loading-bar{
  display:none;height:3px;border-radius:2px;overflow:hidden;margin-bottom:20px;
  background:rgba(124,58,237,.16);
}
.loading-bar.is-on{display:block}
.loading-bar::after{
  content:"";display:block;height:100%;width:36%;
  background:linear-gradient(90deg,var(--purple),var(--cyan));
  animation:slide 1.1s infinite ease-in-out;
}
@keyframes slide{0%{transform:translateX(-100%)}100%{transform:translateX(320%)}}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:44px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:12px}
details.faq{
  border:1px solid var(--border);border-radius:var(--r);
  background:var(--card);overflow:hidden;transition:border-color .22s ease,background .22s ease;
}
details.faq[open]{border-color:var(--border-2);background:var(--card-2)}
details.faq summary{
  list-style:none;cursor:pointer;padding:18px 20px 18px 22px;
  font-size:15.5px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  position:relative;border-left:3px solid transparent;transition:border-color .22s ease;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq[open] summary{border-left-color:var(--cyan)}
details.faq summary::after{
  content:"";flex:none;width:9px;height:9px;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform .25s ease,border-color .25s ease;
}
details.faq[open] summary::after{transform:rotate(-135deg);border-color:var(--cyan)}
details.faq summary:hover{color:var(--cyan)}
.faq-ans{padding:0 22px 20px;color:var(--text-2);font-size:14.5px;line-height:1.85}
.faq-aside{
  border:1px solid var(--border);border-radius:var(--r-lg);
  background:linear-gradient(180deg,var(--card),var(--panel));
  padding:24px;position:sticky;top:calc(var(--nav-h) + 24px);
}
.faq-aside h3{font-size:17px;margin-bottom:12px}
.faq-aside p{font-size:14px;color:var(--text-2);margin-bottom:18px}
.mini-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.mini-list li{font-size:13.5px;color:var(--text-2);display:flex;gap:8px;line-height:1.7}
.mini-list li::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--cyan);margin-top:9px}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--border);
  background:linear-gradient(180deg,rgba(20,14,40,.7),rgba(8,5,18,.95));
  padding:60px 0 26px;margin-top:20px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px}
.footer-col h4{font-size:14.5px;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--purple-2);padding-left:4px}
.footer-bottom{
  border-top:1px solid rgba(124,58,237,.18);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-2);
  border:1px solid var(--border);border-radius:var(--r-pill);padding:7px 16px;
  transition:.2s;
}
.to-top:hover{color:var(--lime);border-color:rgba(217,242,75,.5)}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  .container{padding:0 28px}
  .hero-grid{gap:30px}
  .split-2{gap:34px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .search-box{display:none}
  .nav-right .btn-primary{display:none}
  .hamburger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero{padding:56px 0 64px;min-height:auto}
  .hero-copy{max-width:100%}
  .hero-visual{max-width:640px}
  .hud-1{left:10px}
  .hud-2{right:10px}
  .split-2{grid-template-columns:1fr;gap:30px}
  .feature-aside{position:static}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section-sm{padding:40px 0}
  :root{--nav-h:56px}
  .brand-text i{display:none}
  .ticker-inner{flex-direction:column;align-items:flex-start;gap:6px;padding:8px 0}
  .ticker-text{white-space:normal;font-size:13px;line-height:1.5}
  .ticker-right{width:100%;justify-content:space-between}
  .hero{padding:48px 0 56px}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:16px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto;min-width:150px}
  .hud{font-size:12px;padding:8px 12px}
  .hud-3{left:12px;bottom:12px}
  .wall{grid-template-columns:1fr 1fr;gap:14px}
  .wall-item,.wall-item.span-8{grid-column:span 2;min-height:200px}
  .post-grid{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr 1fr 1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .feature-item{grid-template-columns:44px 1fr;gap:12px}
  .feature-num{font-size:18px}
}
@media (max-width:520px){
  .hero-badges span{font-size:12.5px;padding:5px 11px}
  .cta-band{padding:22px}
  .form-card{padding:20px}
  .field-row{grid-template-columns:1fr}
  .field-row button{width:100%}
  .stat-row{grid-template-columns:1fr}
  .wall{grid-template-columns:1fr}
  .wall-item,.wall-item.span-8{grid-column:span 1;min-height:210px}
}

/* roulang page: category1 */
:root{
  --bg:#0B0716;
  --bg-2:#140E28;
  --card:#1B1433;
  --card-2:#221941;
  --brand:#7C3AED;
  --brand-2:#9B6BFF;
  --accent:#22D3EE;
  --lemon:#D9F24B;
  --text:#F5F3FF;
  --text-2:#C9C2E4;
  --text-3:#8E86AD;
  --border:rgba(124,58,237,.28);
  --border-2:rgba(124,58,237,.5);
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --radius-s:8px;
  --radius:12px;
  --radius-l:18px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-lg:0 24px 60px rgba(0,0,0,.5);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.2px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease);}
button,input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.25;font-weight:700;letter-spacing:.4px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(124,58,237,.5);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:80px 0;}
.section-sm{padding:56px 0;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(11,7,22,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{
  background:rgba(9,5,18,.96);
  border-bottom-color:rgba(124,58,237,.32);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:64px;
}
.header-left{display:flex;align-items:center;gap:32px;min-width:0;}
.header-right{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#0B0716;
  font-weight:700;
  font-size:18px;
  box-shadow:0 6px 18px rgba(124,58,237,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:.3px;white-space:nowrap;}
.brand-text i{
  font-style:normal;
  font-size:10px;
  letter-spacing:2.4px;
  color:var(--text-3);
  text-transform:uppercase;
}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--text);background:rgba(124,58,237,.14);}
.nav-menu a.is-active{color:var(--text);font-weight:600;}
.nav-menu a.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand-2),var(--accent));
}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:38px;
  padding:0 12px;
  border:1px solid var(--border);
  border-radius:999px;
  background:rgba(27,20,51,.75);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--border-2);box-shadow:0 0 0 3px rgba(124,58,237,.18);}
.search-box svg{width:15px;height:15px;fill:var(--text-3);flex-shrink:0;}
.search-box input{
  width:120px;
  border:0;background:transparent;
  color:var(--text);
  font-size:13.5px;
  outline:none;
}
.search-box input::placeholder{color:var(--text-3);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border:1px solid transparent;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s var(--ease),filter .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--accent));
  color:#0B0716;
  box-shadow:0 10px 26px rgba(124,58,237,.4);
}
.btn-primary:hover{filter:brightness(1.08);}
.btn-lemon{
  background:var(--lemon);
  color:#14102A;
  box-shadow:0 10px 26px rgba(217,242,75,.24);
}
.btn-lemon:hover{filter:brightness(1.06);}
.btn-ghost{
  background:rgba(124,58,237,.1);
  border-color:var(--border);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--border-2);background:rgba(124,58,237,.2);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:9px;}
.header-right .btn{height:38px;padding:0 18px;font-size:13.5px;border-radius:9px;}

.menu-btn{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--border);
  border-radius:10px;
  background:rgba(27,20,51,.8);
  cursor:pointer;
  padding:0;
  place-items:center;
}
.menu-btn span{
  display:block;
  width:18px;height:2px;
  margin:3px auto;
  border-radius:2px;
  background:var(--text-2);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.drawer{
  display:none;
  border-top:1px solid var(--border);
  background:rgba(11,7,22,.98);
  padding:14px 0 22px;
}
.drawer.is-open{display:block;}
.drawer a{
  display:block;
  padding:12px 4px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid rgba(124,58,237,.14);
}
.drawer a.is-active{color:var(--lemon);font-weight:600;}
.drawer .btn{width:100%;margin-top:18px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--border);
  background:
    linear-gradient(180deg,rgba(11,7,22,.92),rgba(11,7,22,.86) 45%,var(--bg) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(124,58,237,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(124,58,237,.08) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 85%);
}
.page-hero .container{position:relative;z-index:2;}
.page-hero-inner{padding:64px 0 72px;max-width:860px;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:26px;
}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(142,134,173,.6);}
.breadcrumb .current{color:var(--text-2);}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);
  letter-spacing:.5px;
  margin-bottom:20px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand-2),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  max-width:720px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(124,58,237,.12);
  color:var(--text-2);
  font-size:12.5px;
  letter-spacing:.2px;
}
.tag-cyan{border-color:rgba(34,211,238,.35);background:rgba(34,211,238,.1);color:#9CEAF7;}
.tag-lemon{border-color:rgba(217,242,75,.35);background:rgba(217,242,75,.1);color:var(--lemon);}

/* ---------- 主体栅格 ---------- */
.content-grid{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:52px;
  align-items:start;
}
.toc{
  position:sticky;
  top:96px;
  padding:22px 20px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(27,20,51,.9),rgba(20,14,40,.9));
  box-shadow:var(--shadow);
}
.toc h2{
  font-size:13px;
  letter-spacing:2px;
  color:var(--text-3);
  font-weight:600;
  text-transform:uppercase;
  margin-bottom:14px;
}
.toc ol{display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:block;
  padding:9px 12px;
  border-radius:8px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
}
.toc a:hover{color:var(--text);background:rgba(124,58,237,.16);border-left-color:var(--brand-2);}
.toc .toc-cta{margin-top:18px;}
.toc .toc-cta .btn{width:100%;height:40px;font-size:13.5px;}

.panel{
  border:1px solid var(--border);
  border-radius:var(--radius-l);
  background:linear-gradient(180deg,rgba(27,20,51,.72),rgba(20,14,40,.72));
  padding:36px 34px;
  box-shadow:var(--shadow);
}
.panel + .panel{margin-top:32px;}
.panel-title{
  font-size:24px;
  margin-bottom:8px;
}
.panel-sub{
  font-size:14px;
  color:var(--text-3);
  margin-bottom:24px;
}
.panel p{color:var(--text-2);font-size:16px;line-height:1.9;}
.panel p + p{margin-top:16px;}
.panel strong{color:var(--text);font-weight:600;}

.stat-row{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:28px;
}
.stat{
  padding:18px 18px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:rgba(11,7,22,.55);
}
.stat b{
  display:block;
  font-size:26px;
  font-variant-numeric:tabular-nums;
  color:var(--lemon);
  letter-spacing:.5px;
  line-height:1.2;
}
.stat span{font-size:13px;color:var(--text-3);}

/* ---------- 步骤 ---------- */
.steps{display:flex;flex-direction:column;gap:16px;margin-top:8px;}
.step{
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:18px;
  padding:20px 22px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:rgba(11,7,22,.5);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.step:hover{
  transform:translateY(-2px);
  border-color:var(--border-2);
  background:rgba(27,20,51,.72);
}
.step-num{
  display:grid;
  place-items:center;
  width:52px;height:52px;
  border-radius:14px;
  border:1px solid rgba(34,211,238,.35);
  background:rgba(34,211,238,.1);
  color:var(--accent);
  font-size:16px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- 图墙 ---------- */
.gallery{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:18px;
  margin-top:8px;
}
.g-item{
  position:relative;
  overflow:hidden;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--card);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.g-item:hover{transform:translateY(-2px);border-color:var(--border-2);box-shadow:var(--shadow);}
.g-item img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s var(--ease);
}
.g-item:hover img{transform:scale(1.03);}
.g-item figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 16px;
  background:linear-gradient(180deg,transparent,rgba(11,7,22,.92));
  font-size:14px;
  color:var(--text);
}
.g-item .g-badge{
  position:absolute;
  top:12px;left:12px;
  height:24px;
  padding:0 10px;
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  background:rgba(11,7,22,.8);
  border:1px solid var(--border);
  font-size:12px;
  color:var(--text-2);
}
.g-8{grid-column:span 8;aspect-ratio:16/9;}
.g-4{grid-column:span 4;aspect-ratio:4/3;}
.g-6{grid-column:span 6;aspect-ratio:16/10;}
.g-fallback{
  width:100%;height:100%;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--card-2),var(--bg-2));
  color:var(--text-3);
  font-size:13px;
}

/* ---------- 清单 ---------- */
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:8px;}
.check-list li{
  display:flex;
  gap:12px;
  padding:16px 18px;
  border:1px solid rgba(124,58,237,.2);
  border-radius:var(--radius);
  background:rgba(11,7,22,.45);
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-list li:hover{border-color:var(--border-2);background:rgba(27,20,51,.65);}
.check-list li::before{
  content:"";
  flex-shrink:0;
  width:8px;height:8px;
  margin-top:9px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--brand-2),var(--accent));
  box-shadow:0 0 0 4px rgba(124,58,237,.16);
}
.check-list b{color:var(--text);font-weight:600;}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;
  gap:16px;
  align-items:flex-start;
  margin-top:24px;
  padding:18px 20px;
  border:1px solid rgba(217,242,75,.28);
  border-radius:var(--radius);
  background:rgba(217,242,75,.07);
}
.notice .dot{
  flex-shrink:0;
  width:10px;height:10px;
  margin-top:8px;
  border-radius:50%;
  background:var(--lemon);
  box-shadow:0 0 0 5px rgba(217,242,75,.14);
}
.notice p{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:8px;}
.faq-item{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:rgba(11,7,22,.5);
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item[open]{border-color:var(--border-2);background:rgba(27,20,51,.7);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  flex-shrink:0;
  width:10px;height:10px;
  border-right:2px solid var(--text-3);
  border-bottom:2px solid var(--text-3);
  transform:rotate(45deg) translate(-2px,-2px);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg) translate(-2px,-2px);border-color:var(--accent);}
.faq-item summary:hover{color:var(--accent);}
.faq-answer{
  padding:0 22px 20px 26px;
  border-left:2px solid var(--brand);
  margin-left:0;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
}
.faq-answer{margin-left:22px;padding-left:18px;}

/* ---------- 底部 CTA ---------- */
.cta-banner{
  position:relative;
  overflow:hidden;
  border:1px solid var(--border);
  border-radius:var(--radius-l);
  background:
    radial-gradient(900px 320px at 12% -30%,rgba(124,58,237,.5),transparent 62%),
    radial-gradient(700px 300px at 100% 120%,rgba(34,211,238,.28),transparent 60%),
    linear-gradient(180deg,var(--card),var(--bg-2));
  padding:52px 48px;
  box-shadow:var(--shadow-lg);
}
.cta-banner h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px;}
.cta-banner p{color:var(--text-2);font-size:16px;max-width:620px;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
  padding-top:24px;
  border-top:1px solid rgba(124,58,237,.22);
}
.cta-meta span{font-size:13px;color:var(--text-3);}

/* ---------- 表单 ---------- */
.form-card{
  margin-top:28px;
  padding:24px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:rgba(11,7,22,.55);
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
.field input[type="text"],
.field input[type="tel"]{
  width:100%;
  height:44px;
  padding:0 14px;
  border:1px solid var(--border);
  border-radius:10px;
  background:rgba(27,20,51,.7);
  color:var(--text);
  outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{border-color:var(--border-2);box-shadow:0 0 0 3px rgba(124,58,237,.18);}
.field.has-error input{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.14);}
.field-error{display:none;margin-top:6px;font-size:12.5px;color:var(--err);}
.field.has-error .field-error{display:block;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.checkbox{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}
.checkbox input{margin-top:3px;accent-color:var(--brand);}
.form-note{margin-top:14px;font-size:12.5px;color:var(--text-3);}
.form-success{
  display:none;
  margin-top:16px;
  padding:12px 16px;
  border:1px solid rgba(52,211,153,.4);
  border-radius:10px;
  background:rgba(52,211,153,.1);
  color:var(--ok);
  font-size:14px;
}
.form-success.is-visible{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--border);
  background:linear-gradient(180deg,var(--bg-2),#08040F);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.9;max-width:360px;}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:.6px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand-2);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(124,58,237,.18);
  font-size:13px;
  color:var(--text-3);
}
.to-top{color:var(--text-2);}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:100%;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .menu-btn{display:grid;}
  .search-box{display:none;}
  .content-grid{grid-template-columns:1fr;gap:32px;}
  .toc{
    position:static;
    padding:16px;
    display:flex;
    gap:10px;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .toc::-webkit-scrollbar{display:none;}
  .toc h2{display:none;}
  .toc ol{flex-direction:row;gap:8px;}
  .toc a{
    white-space:nowrap;
    padding:8px 14px;
    border-left:0;
    border:1px solid var(--border);
    border-radius:999px;
    font-size:13.5px;
  }
  .toc a:hover{border-color:var(--border-2);}
  .toc .toc-cta{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:span 2;}
  .g-8,.g-6{grid-column:span 12;}
  .g-4{grid-column:span 6;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:52px 0;}
  .section-sm{padding:40px 0;}
  .header-inner{height:56px;gap:12px;}
  .brand-text b{font-size:14px;}
  .brand-text i{display:none;}
  .page-hero-inner{padding:40px 0 52px;}
  .hero-lead{font-size:15.5px;}
  .panel{padding:26px 20px;}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px 16px;}
  .step-num{width:44px;height:44px;border-radius:12px;font-size:15px;}
  .stat-row{grid-template-columns:1fr;gap:12px;}
  .stat{display:flex;align-items:baseline;gap:12px;padding:14px 16px;}
  .stat b{font-size:22px;}
  .cta-banner{padding:32px 22px;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-brand{grid-column:span 1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .field-row{grid-template-columns:1fr;}
  .faq-item summary{padding:16px;font-size:15px;}
  .faq-answer{margin-left:16px;padding:0 16px 18px 14px;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .page-hero h1{font-size:28px;}
  .panel-title{font-size:21px;}
  .g-4{grid-column:span 12;}
  .cta-banner h2{font-size:22px;}
}

/* roulang page: article */
:root{
  --bg:#0B0716;
  --panel:#140E28;
  --card:#1B1433;
  --brand:#7C3AED;
  --brand-soft:rgba(124,58,237,.16);
  --cyan:#22D3EE;
  --lemon:#D9F24B;
  --text-1:#F5F3FF;
  --text-2:#C9C2E4;
  --text-3:#8E86AD;
  --line:rgba(124,58,237,.28);
  --line-strong:rgba(124,58,237,.55);
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --radius-s:10px;
  --radius-m:14px;
  --radius-l:20px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-lg:0 22px 60px rgba(0,0,0,.5);
  --c-max:1200px;
  --pad:32px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--bg);
  background-image:
    radial-gradient(900px 480px at 12% -8%, rgba(124,58,237,.22), transparent 62%),
    radial-gradient(760px 420px at 92% 4%, rgba(34,211,238,.12), transparent 60%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--cyan)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:.2px}
p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
::selection{background:rgba(124,58,237,.45);color:#fff}

.container{width:100%;max-width:var(--c-max);margin:0 auto;padding:0 var(--pad)}
@media (min-width:1360px){.container{max-width:1280px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(11,7,22,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(11,7,22,.95);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.header-inner{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-weight:700;font-size:17px;color:#0B0716;
  background:linear-gradient(135deg,var(--lemon),var(--cyan));
  box-shadow:0 6px 18px rgba(34,211,238,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15.5px;letter-spacing:.3px}
.brand-text i{font-style:normal;font-size:10px;letter-spacing:2.4px;color:var(--text-3)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-right:auto}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:14.5px;color:var(--text-2);
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--cyan));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-menu a:hover{color:var(--text-1);background:rgba(124,58,237,.14)}
.nav-menu a:hover::after,.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--text-1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 12px;min-width:190px;
  background:rgba(27,20,51,.85);border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--line-strong);box-shadow:0 0 0 3px rgba(124,58,237,.18)}
.search-box svg{flex:0 0 auto;opacity:.7}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--text-1);
}
.search-box input::placeholder{color:var(--text-3)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:rgba(27,20,51,.85);
  place-items:center;
}
.nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--text-1);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:2px;border-radius:2px;background:var(--text-1);
  transition:transform .2s ease,top .2s ease;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(20,14,40,.98);
  padding:12px 0 20px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;padding:12px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(124,58,237,.14);
}
.mobile-drawer a:hover{color:var(--cyan)}
.mobile-drawer .drawer-cta{margin-top:16px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,filter .16s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(125deg,var(--brand),#5B21B6 55%,var(--cyan));
  box-shadow:0 10px 26px rgba(124,58,237,.34);
}
.btn-primary:hover{filter:brightness(1.08);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{color:var(--text-1);border-color:var(--line-strong);background:rgba(124,58,237,.08)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(34,211,238,.08)}
.btn-lemon{color:#141126;background:var(--lemon);box-shadow:0 10px 26px rgba(217,242,75,.22)}
.btn-lemon:hover{filter:brightness(1.05);color:#141126;transform:translateY(-1px)}
.btn-sm{min-height:38px;padding:0 15px;font-size:13.5px;border-radius:9px}
.btn:disabled,.btn.is-disabled{opacity:.45;pointer-events:none;filter:grayscale(.3)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12.5px;
  color:var(--text-2);border:1px solid var(--line);background:rgba(124,58,237,.12);
}
.badge-cyan{color:var(--cyan);border-color:rgba(34,211,238,.36);background:rgba(34,211,238,.1)}
.badge-lemon{color:var(--lemon);border-color:rgba(217,242,75,.34);background:rgba(217,242,75,.1)}

/* ---------- page hero / breadcrumb ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:38px 0 34px;
  background-image:linear-gradient(90deg,rgba(11,7,22,.94) 0%,rgba(11,7,22,.78) 52%,rgba(11,7,22,.6) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(124,58,237,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(124,58,237,.07) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:rgba(142,134,173,.6)}
.breadcrumb .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article layout ---------- */
.article-wrap{padding:52px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 304px;gap:34px;align-items:start}
.article-shell{
  background:linear-gradient(180deg,rgba(27,20,51,.9),rgba(20,14,40,.86));
  border:1px solid var(--line);border-radius:var(--radius-l);
  padding:34px 38px 40px;box-shadow:var(--shadow);
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:30px}
.article-title{font-size:clamp(24px,3vw,34px);line-height:1.32;margin-bottom:16px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13.5px;color:var(--text-3)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6}
.meta-row .share{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;
}
.share-btn{
  padding:5px 12px;border-radius:999px;font-size:12.5px;
  border:1px solid var(--line);color:var(--text-2);background:rgba(124,58,237,.1);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.share-btn:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(34,211,238,.1)}
.share-btn.is-done{color:var(--ok);border-color:rgba(52,211,153,.5);background:rgba(52,211,153,.1)}

/* ---------- article body ---------- */
.post-body{max-width:796px}
.post-body > *:first-child{margin-top:0}
.post-body p{font-size:17.5px;line-height:1.98;color:var(--text-2);margin:0 0 20px}
.post-body h2{
  font-size:clamp(21px,2.3vw,27px);margin:44px 0 18px;padding-left:14px;
  border-left:4px solid var(--brand);line-height:1.4;
}
.post-body h3{font-size:20px;margin:30px 0 14px;color:var(--text-1)}
.post-body h4{font-size:17px;margin:24px 0 12px;color:var(--text-1)}
.post-body a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.post-body strong{color:var(--text-1)}
.post-body ul,.post-body ol{margin:0 0 20px;padding-left:24px;color:var(--text-2)}
.post-body ul{list-style:disc}
.post-body ol{list-style:decimal}
.post-body li{font-size:17px;line-height:1.9;margin-bottom:9px}
.post-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:4px solid var(--brand);
  background:linear-gradient(90deg,rgba(124,58,237,.16),rgba(124,58,237,.02));
  border-radius:0 var(--radius-m) var(--radius-m) 0;
  color:var(--text-1);font-size:16.5px;line-height:1.9;
}
.post-body blockquote p{margin:0;font-size:16.5px;color:var(--text-1)}
.post-body img{border-radius:var(--radius-m);margin:26px auto;box-shadow:var(--shadow)}
.post-body figure{margin:26px 0}
.post-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.post-body table{
  width:100%;border-collapse:collapse;margin:26px 0;display:block;overflow-x:auto;
  border:1px solid var(--line);border-radius:var(--radius-m);
}
.post-body th,.post-body td{
  border-bottom:1px solid var(--line);padding:11px 15px;text-align:left;
  font-size:14.5px;color:var(--text-2);white-space:nowrap;
}
.post-body th{background:rgba(124,58,237,.14);color:var(--text-1);font-weight:600}
.post-body pre{
  background:#0d0820;border:1px solid var(--line);border-radius:var(--radius-m);
  padding:16px 18px;overflow-x:auto;margin:24px 0;
}
.post-body pre code{background:none;padding:0;color:#cbd5e1}
.post-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;color:var(--lemon);background:rgba(217,242,75,.1);
  padding:2px 6px;border-radius:6px;
}
.post-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}

/* ---------- empty / error state ---------- */
.state-box{
  border:1px dashed var(--line-strong);border-radius:var(--radius-m);
  background:rgba(124,58,237,.08);padding:44px 26px;text-align:center;
}
.state-box .state-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;display:grid;place-items:center;
  background:rgba(124,58,237,.2);border:1px solid var(--line);color:var(--cyan);font-size:24px;font-weight:700;
}
.state-box h2{font-size:21px;margin-bottom:10px}
.state-box p{color:var(--text-3);font-size:15px;margin-bottom:20px}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:88px;display:grid;gap:18px}
.side-card{
  background:linear-gradient(180deg,rgba(27,20,51,.92),rgba(20,14,40,.9));
  border:1px solid var(--line);border-radius:var(--radius-m);
  padding:20px 20px 22px;box-shadow:var(--shadow);
}
.side-card h3{
  font-size:15px;letter-spacing:.6px;margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:15px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--cyan));
}
.toc-list li + li{margin-top:2px}
.toc-list a{
  display:flex;gap:10px;align-items:flex-start;
  padding:8px 10px;border-radius:9px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:rgba(124,58,237,.14);color:var(--text-1);border-left-color:var(--brand)}
.toc-list .num{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;padding-top:2px}
.side-cta{
  background:linear-gradient(150deg,rgba(124,58,237,.35),rgba(34,211,238,.16));
  border:1px solid var(--line-strong);border-radius:var(--radius-m);
  padding:22px 20px;box-shadow:var(--shadow-lg);
}
.side-cta h3{font-size:17px;margin-bottom:10px}
.side-cta p{font-size:13.5px;line-height:1.8;color:var(--text-2);margin-bottom:16px}
.side-cta .btn{width:100%}
.side-facts{display:grid;gap:10px;margin-top:4px}
.side-facts div{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:9px 12px;border-radius:9px;background:rgba(11,7,22,.5);
  border:1px solid rgba(124,58,237,.18);font-size:13.5px;color:var(--text-3);
}
.side-facts strong{color:var(--text-1);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- related ---------- */
.related{padding:8px 0 76px}
.section-head{margin-bottom:26px}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:2px;color:var(--cyan);
  text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head p{color:var(--text-3);font-size:14.5px;margin-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-m);
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .22s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-lg)}
.rel-card .cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#241a48,#140E28)}
.rel-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .cover img{transform:scale(1.03)}
.rel-card .cover .tag{
  position:absolute;left:12px;top:12px;padding:3px 10px;border-radius:999px;
  font-size:12px;color:var(--lemon);background:rgba(11,7,22,.74);border:1px solid rgba(217,242,75,.3);
}
.rel-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-card h3{font-size:16.5px;line-height:1.5}
.rel-card p{font-size:13.5px;color:var(--text-3);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .foot{margin-top:auto;font-size:12.5px;color:var(--text-3);display:flex;justify-content:space-between;align-items:center}
.rel-card .foot span.more{color:var(--cyan)}

/* ---------- CTA banner ---------- */
.cta-banner{padding:0 0 78px}
.cta-inner{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.35fr 1fr;gap:28px;align-items:center;
  padding:38px 40px;border-radius:var(--radius-l);
  background-image:linear-gradient(115deg,rgba(20,14,40,.96),rgba(124,58,237,.42)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  border:1px solid var(--line-strong);box-shadow:var(--shadow-lg);
}
.cta-inner::after{
  content:"";position:absolute;width:340px;height:340px;right:-90px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.28),transparent 68%);
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(22px,2.7vw,32px);margin-bottom:12px}
.cta-copy p{color:var(--text-2);font-size:15px;line-height:1.85;max-width:560px}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:7px}
.field input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-s);
  background:rgba(11,7,22,.62);border:1px solid var(--line);color:var(--text-1);
  outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.14)}
.field.has-error input{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.14)}
.field .err-msg{display:none;font-size:12.5px;color:var(--err);margin-top:6px}
.field.has-error .err-msg{display:block}
.form-note{font-size:12.5px;color:var(--text-3);line-height:1.7;display:flex;gap:8px;align-items:flex-start}
.form-note input{width:15px;height:15px;margin-top:3px;flex:0 0 auto}
.form-feedback{
  display:none;margin-top:12px;padding:10px 14px;border-radius:var(--radius-s);
  font-size:13.5px;color:var(--ok);background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.4);
}
.form-feedback.is-show{display:block}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(20,14,40,.65),rgba(11,7,22,.98))}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding:56px 0 34px;
}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:13.8px;color:var(--text-3);line-height:1.85;max-width:360px}
.footer-col h4{font-size:14.5px;margin-bottom:14px;color:var(--text-1)}
.footer-col ul li + li{margin-top:10px}
.footer-col a{font-size:13.8px;color:var(--text-3)}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.to-top{
  padding:7px 14px;border-radius:999px;border:1px solid var(--line);
  color:var(--text-2);background:rgba(124,58,237,.1);
}
.to-top:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{display:none}
  .post-body{max-width:100%}
}
@media (max-width:1023px){
  :root{--pad:24px}
  .search-box{display:none}
  .nav-menu{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:56px;gap:14px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;padding:30px 26px}
  .cta-actions{justify-content:flex-start}
  .article-shell{padding:26px 24px 32px}
}
@media (max-width:767px){
  :root{--pad:20px}
  .brand-text i{display:none}
  .brand-text b{font-size:14.5px}
  .page-hero{padding:26px 0 24px}
  .article-wrap{padding:34px 0 52px}
  .article-title{font-size:22px}
  .meta-row .share{margin-left:0;width:100%}
  .post-body p,.post-body li{font-size:16.5px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:40px 0 26px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .btn{width:100%}
  .cta-actions{display:grid;width:100%}
  .footer-grid{grid-template-columns:1fr}
  .article-shell{padding:22px 18px 26px}
  .post-body h2{margin-top:34px}
}

.faq-list{display:grid;gap:14px;max-width:940px}
.faq-list details{
  background:linear-gradient(180deg,rgba(27,20,51,.92),rgba(20,14,40,.9));
  border:1px solid var(--line);border-radius:var(--radius-m);
  padding:6px 20px;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-list details:hover{border-color:var(--line-strong)}
.faq-list details[open]{border-color:var(--line-strong);box-shadow:var(--shadow)}
.faq-list summary{
  list-style:none;cursor:pointer;padding:16px 30px 16px 0;position:relative;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  color:var(--cyan);background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.28);
  font-size:15px;line-height:1;transition:transform .22s ease;
}
.faq-list details[open] summary::after{content:"–";transform:translateY(-50%) rotate(180deg)}
.faq-list summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.faq-list p{
  margin:0 0 18px;padding-left:14px;border-left:2px solid var(--brand);
  font-size:14.8px;line-height:1.9;color:var(--text-2);
}
@media (max-width:767px){
  .faq-list summary{font-size:15px}
  .faq-list p{font-size:14.5px}
}

/* roulang page: category2 */
:root{
  --bg:#0B0716;
  --bg-2:#140E28;
  --card:#1B1433;
  --brand:#7C3AED;
  --brand-2:#A78BFA;
  --brand-deep:#5B21B6;
  --cyan:#22D3EE;
  --lime:#D9F24B;
  --text:#F5F3FF;
  --text-2:#C9C2E4;
  --text-3:#8E86AD;
  --border:rgba(124,58,237,.28);
  --border-strong:rgba(124,58,237,.55);
  --ok:#34D399;
  --warn:#FBBF24;
  --err:#F87171;
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-lg:0 24px 60px rgba(0,0,0,.45);
  --container:1200px;
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:rgba(124,58,237,.5);color:#fff;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;z-index:999;border-radius:0 0 10px 0;}
.skip-link:focus{left:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
section[id],div[id].anchor-target{scroll-margin-top:132px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,7,22,.84);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(8,5,18,.96);
  border-bottom-color:var(--border);
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--cyan));
  color:#0B0716;font-weight:800;font-size:18px;
  box-shadow:0 6px 18px rgba(124,58,237,.4);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.brand-text i{font-style:normal;font-size:10px;letter-spacing:2px;color:var(--text-3);}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:8px;flex:1 1 auto;}
.nav-menu a{
  position:relative;
  padding:20px 12px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--cyan));
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
  border-radius:2px;
}
.nav-menu a:hover{color:var(--text);}
.nav-menu a:hover::after,.nav-menu a.is-active::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--text);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.search{
  display:flex;align-items:center;gap:6px;
  height:40px;padding:0 8px 0 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:999px;
  transition:border-color .2s ease,background .2s ease;
}
.search:focus-within{border-color:var(--border-strong);background:rgba(124,58,237,.12);}
.search svg{width:16px;height:16px;stroke:var(--text-3);flex:0 0 auto;}
.search input{
  width:130px;height:38px;background:transparent;border:0;outline:none;
  font-size:13.5px;color:var(--text);
}
.search input::placeholder{color:var(--text-3);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--border);background:rgba(255,255,255,.03);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{display:none;border-top:1px solid var(--border);background:rgba(11,7,22,.98);}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .container{display:flex;flex-direction:column;padding-top:14px;padding-bottom:20px;gap:4px;}
.mobile-drawer a{
  padding:12px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(124,58,237,.14);
}
.mobile-drawer a.is-active{color:var(--text);font-weight:600;}
.mobile-drawer .btn{margin-top:14px;border-bottom:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;
  transition:transform .18s ease,filter .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  color:#fff;
  box-shadow:0 10px 26px rgba(124,58,237,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{
  background:var(--lime);color:#181233;
  box-shadow:0 10px 24px rgba(217,242,75,.22);
}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-accent:active{transform:translateY(1px);}
.btn-ghost{
  border-color:var(--border-strong);
  color:var(--text);
  background:rgba(124,58,237,.06);
}
.btn-ghost:hover{background:rgba(124,58,237,.16);border-color:var(--brand-2);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-block{width:100%;}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;filter:none;box-shadow:none;}
.btn.is-loading{position:relative;color:transparent;}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.35);border-top-color:#fff;
  animation:spin .7s linear infinite;left:50%;top:50%;margin:-8px 0 0 -8px;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.3px;
  background:rgba(124,58,237,.16);
  border:1px solid var(--border);
  color:var(--brand-2);
}
.badge-cyan{background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.32);color:var(--cyan);}
.badge-lime{background:rgba(217,242,75,.14);border-color:rgba(217,242,75,.34);color:var(--lime);}
.badge-ok{background:rgba(52,211,153,.12);border-color:rgba(52,211,153,.3);color:var(--ok);}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:84px 0 68px;
  border-bottom:1px solid var(--border);
  background:var(--bg);
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.34;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 18% 12%,rgba(124,58,237,.4),transparent 62%),
    radial-gradient(680px 360px at 88% 76%,rgba(34,211,238,.2),transparent 60%),
    linear-gradient(180deg,rgba(11,7,22,.62),rgba(11,7,22,.96));
}
.hero-inner{position:relative;z-index:1;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:var(--text-2);transition:color .2s ease;}
.crumb a:hover{color:var(--cyan);}
.crumb span.sep{color:var(--text-3);}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center;}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.22;font-weight:800;letter-spacing:.4px;
  margin-bottom:18px;
}
.hero-copy h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--cyan),var(--lime));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16.5px;color:var(--text-2);max-width:34em;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:520px;}
.stat{
  background:rgba(27,20,51,.72);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:14px 16px;
}
.stat b{display:block;font-size:22px;font-weight:700;color:var(--lime);font-variant-numeric:tabular-nums;line-height:1.4;}
.stat span{font-size:12.5px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--border);
  background:linear-gradient(160deg,rgba(27,20,51,.96),rgba(20,14,40,.92));
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.hero-card img{width:100%;height:280px;object-fit:cover;opacity:.9;}
.hero-card-body{padding:20px 22px 24px;}
.hero-card-body h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.hero-card-body p{font-size:13.6px;color:var(--text-2);line-height:1.8;}
.hero-mini{
  display:flex;align-items:center;gap:10px;
  margin-top:16px;padding:12px 14px;
  border-radius:var(--r);
  background:rgba(34,211,238,.08);
  border:1px solid rgba(34,211,238,.26);
  font-size:13px;color:var(--text-2);
}
.hero-mini b{color:var(--cyan);font-variant-numeric:tabular-nums;}

/* ============ 锚点条 ============ */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:60;
  background:rgba(11,7,22,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.anchor-scroll{
  display:flex;align-items:center;gap:10px;
  padding:12px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  flex:0 0 auto;
  padding:8px 16px;border-radius:999px;
  font-size:13.5px;color:var(--text-2);
  border:1px solid var(--border);
  background:rgba(255,255,255,.02);
  transition:all .2s ease;
  white-space:nowrap;
}
.anchor-scroll a:hover{color:var(--text);border-color:var(--border-strong);background:rgba(124,58,237,.14);}
.anchor-scroll a.is-active{
  color:#181233;background:var(--lime);border-color:var(--lime);font-weight:700;
}

/* ============ 通用板块 ============ */
.section{padding:76px 0;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin-bottom:42px;}
.section-head .badge{margin-bottom:14px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;font-weight:700;letter-spacing:.3px;margin-bottom:12px;
}
.section-head p{color:var(--text-2);font-size:15.5px;}
.head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;max-width:none;}
.head-split .section-head{margin-bottom:0;}

/* ============ 时间线 ============ */
.timeline{position:relative;display:grid;gap:6px;}
.tl-item{
  position:relative;
  display:grid;grid-template-columns:60px 1fr;
  gap:22px;
  padding:0 0 30px 0;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:29px;top:56px;bottom:6px;width:2px;
  background:linear-gradient(180deg,rgba(124,58,237,.5),rgba(34,211,238,.18));
}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:58px;height:58px;border-radius:16px;
  display:grid;place-items:center;
  font-size:17px;font-weight:700;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
  background:rgba(124,58,237,.16);
  border:1px solid var(--border-strong);
  box-shadow:inset 0 0 22px rgba(124,58,237,.22);
  position:relative;z-index:1;
}
.tl-body{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:20px 22px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.tl-body:hover{border-color:var(--border-strong);transform:translateY(-2px);box-shadow:var(--shadow);}
.tl-body h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.tl-body p{font-size:14.6px;color:var(--text-2);}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ============ 卡片流 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:var(--shadow);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#241a45,#160f2c);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-media .card-tag{
  position:absolute;left:12px;top:12px;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(11,7,22,.78);border:1px solid var(--border-strong);color:var(--brand-2);
  backdrop-filter:blur(6px);
}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-body h3{font-size:18px;font-weight:700;margin-bottom:10px;line-height:1.45;}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.8;flex:1 1 auto;}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:14px;
  border-top:1px solid rgba(124,58,237,.18);
  font-size:12.5px;color:var(--text-3);
}
.card-link{color:var(--cyan);font-weight:600;font-size:13px;transition:opacity .2s ease;}
.card-link:hover{opacity:.78;}

/* ============ 两栏清单 ============ */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.compare{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:26px 26px 24px;
}
.compare h3{font-size:19px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.dot{width:10px;height:10px;border-radius:50%;flex:0 0 auto;}
.dot-ok{background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.16);}
.dot-warn{background:var(--warn);box-shadow:0 0 0 4px rgba(251,191,36,.16);}
.check-list{display:grid;gap:14px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:14.6px;color:var(--text-2);line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:12px;height:12px;border-radius:4px;
  border:1px solid var(--brand-2);
  background:rgba(124,58,237,.22);
}
.check-list li b{color:var(--text);font-weight:600;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:var(--border-strong);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 22px;
  font-size:16px;font-weight:600;
  border-left:3px solid transparent;
  transition:border-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item[open]{background:rgba(27,20,51,.96);border-color:var(--border-strong);}
.faq-item[open] summary{border-left-color:var(--lime);color:var(--lime);}
.faq-icon{
  position:relative;flex:0 0 auto;
  width:22px;height:22px;border-radius:50%;
  border:1px solid var(--border-strong);
  background:rgba(124,58,237,.14);
  transition:transform .25s ease,background .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.6px;}
.faq-icon::after{width:1.6px;height:10px;}
.faq-item[open] .faq-icon{transform:rotate(135deg);background:rgba(217,242,75,.2);}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--lime);}
.faq-a{padding:0 22px 22px 25px;}
.faq-a p{font-size:14.6px;color:var(--text-2);line-height:1.9;}

/* ============ CTA + 表单 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:
    radial-gradient(720px 360px at 12% 10%,rgba(124,58,237,.42),transparent 62%),
    radial-gradient(560px 300px at 92% 90%,rgba(34,211,238,.22),transparent 60%),
    var(--bg-2);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:76px 0;
}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.cta-copy h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;margin-bottom:14px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;margin-bottom:22px;max-width:32em;}
.steps-3{display:flex;flex-wrap:wrap;gap:12px;}
.step-chip{
  display:flex;align-items:center;gap:9px;
  padding:9px 15px;border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  font-size:13.5px;color:var(--text-2);
}
.step-chip b{
  width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand);color:#fff;font-size:11.5px;
  font-variant-numeric:tabular-nums;
}
.form-card{
  background:rgba(27,20,51,.92);
  border:1px solid var(--border-strong);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow-lg);
}
.form-card h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.form-card .form-tip{font-size:13px;color:var(--text-3);margin-bottom:20px;}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;}
.input{
  width:100%;height:46px;
  padding:0 14px;
  border-radius:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  color:var(--text);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.input::placeholder{color:var(--text-3);}
.input:focus{outline:none;border-color:var(--brand-2);background:rgba(124,58,237,.1);box-shadow:0 0 0 3px rgba(124,58,237,.2);}
.input.is-error{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.18);}
.code-row{display:flex;gap:10px;}
.code-row .input{flex:1 1 auto;}
.code-row .btn{flex:0 0 auto;height:46px;}
.err-msg{display:none;font-size:12.5px;color:var(--err);margin-top:7px;}
.err-msg.is-show{display:block;}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);margin:18px 0 20px;}
.agree input{width:17px;height:17px;margin-top:2px;accent-color:var(--brand);flex:0 0 auto;}
.agree a{color:var(--cyan);border-bottom:1px dashed rgba(34,211,238,.5);}
.form-msg{
  display:none;
  margin-top:14px;padding:12px 14px;border-radius:10px;
  font-size:13.5px;
}
.form-msg.is-show{display:block;}
.form-msg.ok{background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.34);color:var(--ok);}
.form-msg.error{background:rgba(248,113,113,.12);border:1px solid rgba(248,113,113,.34);color:var(--err);}

/* ============ 页脚 ============ */
.site-footer{
  background:#08050F;
  border-top:1px solid var(--border);
  padding:62px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:38px;
  border-bottom:1px solid rgba(124,58,237,.16);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.6px;color:var(--text-3);line-height:1.9;max-width:34em;}
.footer-col h4{font-size:14.5px;font-weight:700;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:13.6px;color:var(--text-3);transition:color .2s ease,padding-left .2s ease;}
.footer-col a:hover{color:var(--brand-2);padding-left:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:22px;
  font-size:12.8px;color:var(--text-3);
}
.to-top{color:var(--brand-2);transition:color .2s ease;}
.to-top:hover{color:var(--lime);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .hero-grid{gap:40px;}
  .card-grid{gap:20px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .search{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:-1;}
  .hero-card img{height:230px;}
  .page-hero{padding:60px 0 54px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:34px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .section{padding:60px 0;}
}
@media (max-width:767px){
  :root{--header-h:56px;}
  .container{padding:0 20px;}
  .brand-text i{display:none;}
  .brand-text b{font-size:14px;white-space:normal;}
  .page-hero{padding:44px 0 40px;}
  .hero-copy h1{font-size:clamp(26px,7.6vw,34px);}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{flex:1 1 100%;}
  .stat-row{grid-template-columns:1fr 1fr;gap:12px;}
  .stat b{font-size:19px;}
  .anchor-bar{top:var(--header-h);}
  .section{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .card-grid{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .tl-item{grid-template-columns:46px 1fr;gap:14px;}
  .tl-num{width:46px;height:46px;border-radius:13px;font-size:15px;}
  .tl-item::before{left:22px;top:46px;}
  .tl-body{padding:17px;}
  .faq-item summary{padding:16px 16px;font-size:15px;}
  .faq-a{padding:0 16px 18px 19px;}
  .cta-band{padding:52px 0;}
  .form-card{padding:22px 18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .stat-row{grid-template-columns:1fr;}
  .code-row{flex-direction:column;}
  .code-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-tags .badge{font-size:12px;}
}