/* roulang page: index */
:root{
  --bg-0:#060913;
  --bg-1:#0B1122;
  --bg-2:#121A33;
  --brand-primary:#5A46FF;
  --brand-accent:#2DE2C5;
  --brand-hot:#FF7A45;
  --text-1:#EDF2FF;
  --text-2:#A9B6D6;
  --text-3:#6E7CA0;
  --line:rgba(140,165,255,.16);
  --line-strong:rgba(140,165,255,.30);
  --radius-card:16px;
  --radius-lg:24px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-base:0 8px 28px rgba(3,6,16,.55);
  --shadow-brand:0 12px 36px rgba(90,70,255,.35);
  --shadow-accent:0 0 0 1px rgba(45,226,197,.28),0 10px 34px rgba(45,226,197,.18);
  --space-1:8px; --space-2:16px; --space-3:24px; --space-4:32px;
  --space-5:48px; --space-6:64px; --space-7:88px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --container:1200px;
}
*,*::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-1);
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-accent);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand-accent);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:.01em;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container-xl{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
@media (min-width:1400px){.container-xl{max-width:1280px;}}

/* 通用元素 */
.sec{padding:var(--space-7) 0;position:relative;}
@media (max-width:767px){.sec{padding:56px 0;}}
.sec-head{margin-bottom:var(--space-5);max-width:760px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--brand-accent);
  padding:6px 14px;border:1px solid var(--line-strong);border-radius:var(--radius-pill);
  background:rgba(45,226,197,.06);margin-bottom:18px;
}
.sec-title{font-size:clamp(1.35rem,1.1rem + 1.1vw,1.75rem);color:var(--text-1);}
.sec-desc{margin-top:14px;color:var(--text-2);max-width:680px;font-size:1rem;}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--brand-accent);box-shadow:0 0 10px var(--brand-accent);}

/* 按钮 */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border:none;border-radius:var(--radius-btn);
  background:linear-gradient(120deg,var(--brand-hot),var(--brand-primary));
  color:#fff;font-weight:600;letter-spacing:.01em;cursor:pointer;
  box-shadow:0 10px 28px rgba(255,122,69,.24);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(255,122,69,.34);filter:brightness(1.05);color:#fff;}
.btn-main:active{transform:translateY(0);box-shadow:0 6px 18px rgba(255,122,69,.28);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border-radius:var(--radius-btn);
  border:1px solid rgba(45,226,197,.55);background:transparent;color:var(--brand-accent);
  font-weight:600;cursor:pointer;transition:background .18s ease,transform .18s ease,color .18s ease;
}
.btn-ghost:hover{background:rgba(45,226,197,.12);color:var(--brand-accent);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-accent);
  font-weight:600;font-size:.9375rem;
}
.link-arrow svg{transition:transform .18s ease;}
.link-arrow:hover svg{transform:translateX(4px);}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(6,9,19,.78);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .2s ease,height .2s ease;
}
.site-header.scrolled{background:rgba(6,9,19,.92);border-bottom-color:var(--line-strong);}
.header-inner{
  display:flex;align-items:center;gap:20px;min-height:72px;padding:12px 0;
  transition:min-height .2s ease;
}
.site-header.scrolled .header-inner{min-height:60px;padding:8px 0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(140deg,var(--brand-primary),#2b1fb8);
  border:1px solid rgba(45,226,197,.4);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 20px rgba(90,70,255,.35);
}
.brand-text{font-weight:700;font-size:1.0625rem;letter-spacing:.01em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--text-1);}
.nav-search{
  flex:1 1 auto;max-width:560px;display:flex;align-items:center;gap:0;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:4px 4px 4px 16px;transition:box-shadow .2s ease,border-color .2s ease;
}
.nav-search:focus-within{border-color:rgba(45,226,197,.6);box-shadow:var(--shadow-accent);}
.nav-search svg.search-ico{flex-shrink:0;color:var(--text-3);}
.nav-search input{
  flex:1 1 auto;background:transparent;border:none;outline:none;
  padding:8px 12px;color:var(--text-1);font-size:.9375rem;min-width:0;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  flex-shrink:0;display:inline-flex;align-items:center;gap:6px;
  border:none;cursor:pointer;border-radius:var(--radius-pill);
  padding:9px 18px;font-weight:600;font-size:.875rem;
  background:linear-gradient(120deg,var(--brand-primary),#3b2fd0);color:#fff;
  box-shadow:0 6px 18px rgba(90,70,255,.4);
  transition:filter .18s ease,transform .18s ease;
}
.nav-search button:hover{filter:brightness(1.08);transform:translateY(-1px);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  padding:9px 14px;border-radius:var(--radius-pill);font-size:.9375rem;color:var(--text-2);
  white-space:nowrap;transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--text-1);background:rgba(140,165,255,.08);}
.nav-links a.active{color:var(--brand-accent);background:rgba(45,226,197,.10);}
.header-cta{flex-shrink:0;padding:11px 20px;font-size:.9375rem;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:var(--bg-1);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;color:var(--text-1);
}
.nav-toggle:hover{border-color:var(--line-strong);}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:var(--bg-1);
  padding:16px 0 22px;
}
.mobile-panel.open{display:block;}
.mobile-panel .m-search{display:flex;align-items:center;background:var(--bg-0);border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px 4px 4px 14px;margin-bottom:16px;}
.mobile-panel .m-search input{flex:1;background:transparent;border:none;outline:none;padding:9px 10px;min-width:0;}
.mobile-panel .m-search button{border:none;border-radius:var(--radius-pill);background:var(--brand-primary);color:#fff;padding:9px 16px;font-weight:600;}
.m-group-label{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);font-family:var(--font-mono);margin:14px 0 8px;}
.mobile-panel a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;border-radius:12px;color:var(--text-2);border:1px solid transparent;
}
.mobile-panel a.m-link:hover,.mobile-panel a.m-link.active{
  color:var(--text-1);background:rgba(140,165,255,.08);border-color:var(--line);
}
@media (max-width:1199px){
  .nav-search{max-width:380px;}
  .nav-links a{padding:9px 10px;font-size:.875rem;}
}
@media (max-width:991px){
  .nav-search,.nav-links,.header-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(6,9,19,.82),rgba(6,9,19,.96)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:88px 0 96px;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(140,165,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(140,165,255,.07) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 60% 20%,#000 10%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 60% 20%,#000 10%,transparent 72%);
}
.hero .container-xl{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--radius-pill);
  border:1px solid rgba(45,226,197,.35);background:rgba(45,226,197,.07);
  color:var(--brand-accent);font-size:.8125rem;font-weight:600;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2rem,1.3rem + 1.9vw,3.25rem);
  line-height:1.22;letter-spacing:.01em;
}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--brand-accent),#8ff0e0);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:22px;color:var(--text-2);font-size:1.0625rem;max-width:560px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:34px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border-radius:var(--radius-pill);
  background:rgba(140,165,255,.07);border:1px solid var(--line);
  color:var(--text-2);font-size:.8125rem;
}
.chip svg{color:var(--brand-accent);flex-shrink:0;}
.hero-visual{position:relative;}
.hero-visual .visual-main{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow-base);position:relative;aspect-ratio:16/10;background:var(--bg-2);
}
.hero-visual .visual-main img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.glass-panel{
  position:absolute;left:-24px;bottom:-28px;width:300px;padding:20px 22px;
  border-radius:18px 18px 6px 18px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-base);
}
.glass-panel .gp-title{font-size:.8125rem;color:var(--brand-accent);font-weight:600;letter-spacing:.06em;margin-bottom:12px;font-family:var(--font-mono);}
.glass-steps{display:flex;flex-direction:column;gap:10px;}
.glass-step{display:flex;align-items:center;gap:10px;font-size:.875rem;color:var(--text-2);}
.glass-step .gs-num{
  width:22px;height:22px;border-radius:7px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:.6875rem;color:var(--brand-accent);
  background:rgba(45,226,197,.12);border:1px solid rgba(45,226,197,.28);
}
@media (max-width:1199px){
  .hero-grid{grid-template-columns:6fr 6fr;gap:40px;}
  .glass-panel{left:-8px;bottom:-20px;width:262px;}
}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:48px;}
  .hero{padding:64px 0 72px;}
  .hero-sub{max-width:none;}
  .glass-panel{position:static;width:100%;margin-top:18px;}
  .hero-visual .visual-main{aspect-ratio:16/9;}
}

/* 问题条 */
.issue-list{display:flex;flex-direction:column;gap:18px;max-width:900px;}
.issue-item{
  display:grid;grid-template-columns:96px 1fr auto;gap:22px;align-items:center;
  padding:22px 26px;border-radius:var(--radius-card);
  background:var(--bg-1);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.issue-item:nth-child(2){margin-left:44px;}
.issue-item:nth-child(3){margin-left:88px;}
.issue-item:hover{border-color:rgba(45,226,197,.45);transform:translateY(-2px);background:var(--bg-2);}
.issue-num{
  font-family:var(--font-mono);font-size:1.5rem;color:var(--text-3);
  letter-spacing:.04em;font-variant-numeric:tabular-nums;
}
.issue-item:hover .issue-num{color:var(--brand-accent);}
.issue-title{font-size:1.0625rem;font-weight:600;margin-bottom:6px;}
.issue-note{color:var(--text-2);font-size:.9375rem;}
@media (max-width:991px){
  .issue-item:nth-child(2),.issue-item:nth-child(3){margin-left:0;}
}
@media (max-width:767px){
  .issue-item{grid-template-columns:64px 1fr;gap:14px;padding:18px 20px;}
  .issue-item .link-arrow{grid-column:1/-1;}
  .issue-num{font-size:1.25rem;}
}

/* 方案卡片区 */
.solution-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;}
.solution-grid .sub-grid{display:grid;grid-template-columns:1fr;gap:24px;}
.card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;position:relative;overflow:hidden;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,197,.7),transparent);
  opacity:.5;transition:opacity .2s ease;
}
.card:hover{border-color:rgba(45,226,197,.4);transform:translateY(-2px);box-shadow:var(--shadow-base);}
.card:hover::before{opacity:1;}
.card-lg{padding:0;display:flex;flex-direction:column;}
.card-lg .card-media{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);}
.card-lg .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card-lg:hover .card-media img{transform:scale(1.03);}
.card-lg .card-body{padding:26px;display:flex;flex-direction:column;flex:1;}
.card-tag{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:.75rem;font-weight:600;letter-spacing:.06em;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:rgba(90,70,255,.16);border:1px solid rgba(90,70,255,.4);color:#B9AFFF;
  margin-bottom:16px;
}
.card-tag.accent{background:rgba(45,226,197,.12);border-color:rgba(45,226,197,.36);color:var(--brand-accent);}
.card h3{font-size:1.125rem;margin-bottom:12px;}
.card-lg h3{font-size:1.375rem;}
.card p.card-desc{color:var(--text-2);font-size:.9375rem;margin-bottom:18px;}
.point-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.point-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:.9375rem;}
.point-list li svg{flex-shrink:0;margin-top:6px;color:var(--brand-accent);}
.card .link-arrow{margin-top:auto;}
@media (max-width:991px){
  .solution-grid{grid-template-columns:1fr;}
}

/* 数据区 */
.stats-strip{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px 32px;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.stat-cell{position:relative;padding-right:20px;}
.stat-cell::after{
  content:"";position:absolute;right:0;top:8px;bottom:8px;width:1px;
  background:var(--line);
}
.stat-cell:last-child::after{display:none;padding-right:0;}
.stat-num{
  font-family:var(--font-mono);font-size:2.25rem;font-weight:700;
  font-variant-numeric:tabular-nums;color:var(--text-1);letter-spacing:.02em;line-height:1.2;
}
.stat-num .unit{font-size:1rem;color:var(--brand-accent);margin-left:4px;}
.stat-label{margin-top:8px;color:var(--text-2);font-size:.9375rem;}
.stat-bar{margin-top:14px;height:3px;border-radius:99px;background:rgba(140,165,255,.14);overflow:hidden;}
.stat-bar span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand-primary),var(--brand-accent));}
@media (max-width:991px){
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .stat-cell:nth-child(2)::after{display:none;}
  .stat-cell:nth-child(odd){padding-right:20px;}
}
@media (max-width:575px){
  .stats-strip{padding:28px 20px;}
  .stats-grid{gap:22px;}
  .stat-num{font-size:1.75rem;}
  .stat-label{font-size:.8125rem;}
}

/* 最新信息 */
.filter-chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip-btn{
  padding:8px 18px;border-radius:var(--radius-pill);border:1px solid var(--line);
  background:transparent;color:var(--text-2);font-size:.875rem;cursor:pointer;
  transition:all .18s ease;
}
.chip-btn:hover{border-color:var(--line-strong);color:var(--text-1);}
.chip-btn.active{background:rgba(45,226,197,.12);border-color:rgba(45,226,197,.5);color:var(--brand-accent);font-weight:600;}
.news-layout{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;margin-top:32px;}
.news-feature{
  display:flex;flex-direction:column;border-radius:var(--radius-card);overflow:hidden;
  background:var(--bg-1);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.news-feature:hover{border-color:rgba(45,226,197,.4);transform:translateY(-2px);}
.news-feature .nf-media{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.news-feature .nf-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-feature:hover .nf-media img{transform:scale(1.03);}
.news-feature .nf-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.news-side{display:flex;flex-direction:column;gap:16px;}
.news-mini{
  display:grid;grid-template-columns:132px 1fr;gap:18px;align-items:center;
  padding:16px;border-radius:var(--radius-card);background:var(--bg-1);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.news-mini:hover{border-color:rgba(45,226,197,.4);transform:translateY(-2px);}
.news-mini .nm-media{aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:var(--bg-2);}
.news-mini .nm-media img{width:100%;height:100%;object-fit:cover;}
.nm-title{
  font-size:1rem;font-weight:600;margin:8px 0 6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.nf-title{
  font-size:1.25rem;font-weight:700;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.nm-excerpt{
  color:var(--text-2);font-size:.875rem;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.nf-excerpt{
  color:var(--text-2);font-size:.9375rem;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:14px;color:var(--text-3);font-size:.8125rem;font-family:var(--font-mono);}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:16px;}
.empty-state{
  margin-top:32px;padding:52px 24px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);background:var(--bg-1);
}
.empty-state svg{color:var(--text-3);margin-bottom:16px;}
.empty-state p{color:var(--text-2);font-size:.9375rem;}
.empty-state .retry{margin-top:16px;}
@media (max-width:991px){
  .news-layout{grid-template-columns:1fr;}
}
@media (max-width:575px){
  .news-mini{grid-template-columns:104px 1fr;gap:14px;padding:14px;}
}

/* FAQ */
.faq-wrap{max-width:900px;}
.faq-accordion .accordion-item{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:border-color .2s ease;
}
.faq-accordion .accordion-item::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand-accent);opacity:0;transition:opacity .2s ease;
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(45,226,197,.45);background:var(--bg-2);
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed))::after{opacity:1;}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text-1);font-weight:600;font-size:1.0625rem;
  padding:20px 24px;box-shadow:none;border:none;line-height:1.5;
  display:flex;align-items:center;gap:14px;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-accent);background:transparent;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;}
.faq-accordion .accordion-button::after{
  background-image:none;content:"+";font-family:var(--font-mono);font-size:1.25rem;
  color:var(--brand-accent);width:auto;height:auto;margin-left:auto;
  transition:transform .2s ease;line-height:1;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.faq-accordion .accordion-body{
  padding:0 24px 22px;color:var(--text-2);font-size:.9375rem;line-height:1.9;
}
.faq-accordion .q-num{
  font-family:var(--font-mono);font-size:.8125rem;color:var(--text-3);flex-shrink:0;
}

/* 表单 */
.form-section{
  background:linear-gradient(180deg,var(--bg-1),var(--bg-0));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.form-aside h2{font-size:clamp(1.35rem,1.1rem + 1.1vw,1.75rem);}
.form-aside p{margin-top:16px;color:var(--text-2);}
.aside-points{margin-top:28px;display:flex;flex-direction:column;gap:14px;}
.aside-points li{display:flex;gap:12px;align-items:flex-start;color:var(--text-2);font-size:.9375rem;}
.aside-points li svg{flex-shrink:0;margin-top:6px;color:var(--brand-accent);}
.form-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow-base);
}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:.875rem;color:var(--text-2);margin-bottom:8px;font-weight:500;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;background:var(--bg-0);border:1px solid var(--line);
  border-radius:var(--radius-btn);padding:12px 14px;color:var(--text-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--text-3);}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:rgba(45,226,197,.65);box-shadow:var(--shadow-accent);
}
.form-row select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-row.error input,.form-row.error select{border-color:#FF7A45;}
.form-err{display:none;color:#FF9A6E;font-size:.8125rem;margin-top:6px;}
.form-row.error .form-err{display:block;}
.check-row{display:flex;gap:10px;align-items:flex-start;margin:20px 0 18px;}
.check-row input{width:18px;height:18px;flex-shrink:0;margin-top:4px;accent-color:var(--brand-accent);}
.check-row label{font-size:.8125rem;color:var(--text-2);line-height:1.7;margin:0;}
.form-card .btn-main{width:100%;}
.privacy-note{
  margin-top:16px;padding:14px 16px;border-radius:12px;
  background:rgba(140,165,255,.06);border:1px solid var(--line);
  color:var(--text-3);font-size:.8125rem;line-height:1.75;
}
.privacy-note a{color:var(--brand-accent);text-decoration:underline;}
@media (max-width:991px){
  .form-grid{grid-template-columns:1fr;gap:40px;}
  .form-card{padding:24px;}
}

/* 页脚 */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--text-2);font-size:.875rem;max-width:320px;line-height:1.85;}
.footer-col h4{font-size:.9375rem;margin-bottom:18px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{color:var(--text-2);font-size:.875rem;}
.footer-col a:hover{color:#fff;}
.footer-contact li{color:var(--text-2);font-size:.875rem;display:flex;gap:10px;align-items:flex-start;}
.footer-contact li svg{flex-shrink:0;margin-top:5px;color:var(--brand-accent);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom p{color:var(--text-3);font-size:.8125rem;}
.footer-bottom .fb-links{display:flex;gap:20px;}
.footer-bottom .fb-links a{color:var(--text-3);font-size:.8125rem;}
.footer-bottom .fb-links a:hover{color:var(--text-1);}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
}

/* 弹层与回到顶部 */
.modal-content{
  background:var(--bg-1);border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  color:var(--text-1);
}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px;}
.modal-title{font-size:1.125rem;}
.modal-body{padding:24px;}
.modal-footer{border-top:1px solid var(--line);padding:16px 24px;}
.btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7;}
.modal-backdrop.show{opacity:.7;backdrop-filter:blur(6px);}
.to-top{
  position:fixed;right:24px;bottom:28px;width:48px;height:48px;border-radius:50%;
  display:none;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand-primary),#2b1fb8);
  border:1px solid rgba(45,226,197,.4);color:#fff;cursor:pointer;z-index:1030;
  box-shadow:0 10px 30px rgba(90,70,255,.45);
  transition:transform .18s ease,filter .18s ease;
}
.to-top.show{display:flex;}
.to-top:hover{transform:translateY(-3px);filter:brightness(1.08);}
@media (max-width:575px){.to-top{right:16px;bottom:18px;width:44px;height:44px;}}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.8125rem;color:var(--text-3);}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-accent);}
.crumb .sep{color:var(--text-3);opacity:.6;}

/* roulang page: article */
:root{
  --bg-0:#060913;
  --bg-1:#0B1122;
  --bg-2:#121A33;
  --brand-primary:#5A46FF;
  --brand-accent:#2DE2C5;
  --brand-hot:#FF7A45;
  --text-1:#EDF2FF;
  --text-2:#A9B6D6;
  --text-3:#6E7CA0;
  --line:rgba(140,165,255,.16);
  --line-strong:rgba(140,165,255,.3);
  --card-grad:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-card:16px;
  --r-lg:24px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 8px 28px rgba(3,6,16,.55);
  --sh-brand:0 12px 36px rgba(90,70,255,.35);
  --sh-accent:0 0 0 1px rgba(45,226,197,.28),0 10px 34px rgba(45,226,197,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-1);
  --bs-border-color:var(--line);
  --bs-link-color:var(--brand-accent);
  --bs-link-hover-color:#7ff0dd;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 480px at 10% -10%, rgba(90,70,255,.20), transparent 70%),
    radial-gradient(760px 420px at 94% 4%, rgba(45,226,197,.11), transparent 72%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-accent);text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:#7ff0dd}
h1,h2,h3,h4{line-height:1.3;letter-spacing:.01em;margin:0;font-weight:700}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-accent);outline-offset:2px}
.container-xl{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1400px){.container-xl{max-width:1280px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(6,9,19,.78);
  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.scrolled{background:rgba(6,9,19,.9);border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(3,6,16,.5)}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;padding-top:8px;padding-bottom:8px;
  transition:min-height .25s ease;
}
.site-header.scrolled .header-inner{min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(90,70,255,.55),rgba(45,226,197,.28));
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18);
}
.brand-text{font-size:1.0625rem;font-weight:700;white-space:nowrap}
.nav-search{
  flex:1 1 auto;max-width:560px;margin:0 auto;
  display:flex;align-items:center;gap:8px;
  background:rgba(11,17,34,.9);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:6px 6px 6px 16px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:rgba(45,226,197,.6);box-shadow:var(--sh-accent)}
.ns-icon{flex:0 0 auto;color:var(--text-3)}
.nav-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;color:var(--text-1);
  font-size:.9375rem;padding:6px 4px;outline:none;
}
.nav-search input::placeholder{color:var(--text-3)}
.ns-btn{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  border:0;border-radius:var(--r-pill);padding:8px 16px;
  font-size:.875rem;font-weight:600;color:#050912;
  background:linear-gradient(135deg,var(--brand-accent),#6EF3DC);
  box-shadow:0 6px 18px rgba(45,226,197,.24);
  cursor:pointer;transition:transform .18s ease,filter .18s ease;
}
.ns-btn:hover{transform:translateY(-1px);filter:brightness(1.05)}
.ns-btn:active{transform:none}
.nav-links{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.nav-links a{
  position:relative;display:block;padding:8px 12px;border-radius:10px;
  font-size:.9375rem;color:var(--text-2);white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--text-1);background:rgba(140,165,255,.08)}
.nav-links a.active{color:var(--text-1);background:rgba(90,70,255,.18)}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-accent),var(--brand-primary));
}
.btn-hot{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:.9375rem;font-weight:600;color:#fff;white-space:nowrap;
  background:linear-gradient(135deg,var(--brand-hot),var(--brand-primary));
  box-shadow:0 10px 26px rgba(255,122,69,.28);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-hot:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,122,69,.4);filter:brightness(1.05)}
.btn-hot:active{transform:translateY(0);box-shadow:0 6px 16px rgba(255,122,69,.28)}
.header-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(11,17,34,.9);border:1px solid var(--line);
  cursor:pointer;padding:11px 10px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text-1);margin:4px 0;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(6,9,19,.97);
  padding:16px 24px 24px;
}
.mobile-drawer.open{display:block}
.mobile-search{max-width:none;margin:0 0 16px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:16px}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;color:var(--text-2);
  background:rgba(18,26,51,.6);border:1px solid var(--line);font-size:.95rem;
}
.drawer-nav a:hover{color:var(--text-1);border-color:var(--line-strong)}
.drawer-nav a.active{color:var(--text-1);background:rgba(90,70,255,.2)}
.drawer-foot p{margin:12px 0 0;font-size:.8125rem;color:var(--text-3)}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:24px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:var(--text-3);margin:0}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand-accent)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .cur{color:var(--text-3);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章布局 ---------- */
.article-wrap{padding:32px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
.article-main{max-width:820px;min-width:0}
.article-head{
  position:relative;overflow:hidden;
  background:var(--card-grad);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh-card);
}
.article-head::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,197,.7),transparent);
}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:.75rem;font-weight:600;letter-spacing:.04em;
  color:var(--brand-accent);
  background:rgba(45,226,197,.1);
  border:1px solid rgba(45,226,197,.3);
  margin-bottom:16px;
}
.article-head h1{
  font-size:clamp(1.6rem,1.28rem + 1.4vw,2.25rem);
  line-height:1.32;
  margin-bottom:16px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:.8125rem;color:var(--text-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .mono{font-family:var(--font-mono);color:var(--text-2)}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-btn);font-size:.875rem;font-weight:600;
  background:transparent;border:1px solid var(--line-strong);color:var(--text-1);
  cursor:pointer;transition:background .18s ease,border-color .18s ease,transform .18s ease,color .18s ease;
}
.btn-ghost:hover,.btn-line:hover{background:rgba(45,226,197,.12);border-color:var(--brand-accent);color:var(--text-1);transform:translateY(-2px)}
.btn-ghost:active,.btn-line:active{transform:none}
.btn-line{color:var(--brand-accent);border-color:rgba(45,226,197,.45)}

/* ---------- 正文排版 ---------- */
.article-body{
  margin-top:32px;
  background:var(--card-grad);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px;
  font-size:1rem;line-height:1.9;color:var(--text-2);
  box-shadow:var(--sh-card);
}
.article-body>p:first-child{color:var(--text-1);font-size:1.0625rem}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  position:relative;padding-left:18px;
  font-size:clamp(1.35rem,1.18rem + .7vw,1.75rem);
  color:var(--text-1);margin:32px 0 16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-accent),var(--brand-primary));
}
.article-body h2:hover::after{
  content:"#";margin-left:10px;color:var(--brand-accent);opacity:.65;font-weight:400;font-size:.9em;
}
.article-body h3{
  position:relative;font-size:1.125rem;color:var(--text-1);
  margin:24px 0 12px;padding-left:12px;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.35em;width:6px;height:6px;border-radius:50%;
  background:var(--brand-accent);box-shadow:0 0 0 3px rgba(45,226,197,.14);
}
.article-body h4{font-size:1rem;color:var(--text-1);margin:20px 0 10px}
.article-body strong{color:var(--text-1);font-weight:600}
.article-body a{color:var(--brand-accent);text-decoration:underline;text-decoration-style:dotted;text-underline-offset:3px}
.article-body a:hover{text-decoration-style:solid;text-decoration-color:var(--brand-accent)}
.article-body ul li{position:relative;padding-left:20px;margin:8px 0}
.article-body ul li::before{
  content:"";position:absolute;left:5px;top:.76em;width:6px;height:6px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand-accent),var(--brand-primary));
}
.article-body ol{counter-reset:aol}
.article-body ol li{counter-increment:aol;position:relative;padding-left:30px;margin:8px 0}
.article-body ol li::before{
  content:counter(aol,decimal-leading-zero);
  position:absolute;left:0;top:.1em;
  font-family:var(--font-mono);font-size:.8rem;color:var(--brand-accent);
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border-left:3px solid var(--brand-accent);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
  backdrop-filter:blur(8px);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;display:block;overflow-x:auto;
  margin:24px 0;font-size:.9375rem;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--bg-2);color:var(--text-1);font-weight:600;white-space:nowrap}
.article-body td:first-child{color:var(--text-1);font-weight:600}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.article-body img{border-radius:12px;margin:24px auto;box-shadow:var(--sh-card)}
.article-body figcaption,.article-body .caption{
  text-align:center;font-size:.8125rem;color:var(--text-3);margin:-12px 0 24px;
}
.article-body pre{
  background:#05070f;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:24px 0;
  font-family:var(--font-mono);font-size:.875rem;line-height:1.7;color:var(--text-2);
}
.article-body code{
  font-family:var(--font-mono);font-size:.9em;color:var(--brand-accent);
  background:rgba(45,226,197,.08);border-radius:6px;padding:2px 6px;
}
.article-body pre code{background:transparent;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* 空态 */
.empty-state{
  text-align:center;padding:48px 24px;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(18,26,51,.4);
}
.empty-state svg{color:var(--brand-accent);opacity:.85;margin-bottom:16px}
.empty-state h3{font-size:1.125rem;color:var(--text-1);margin-bottom:8px}
.empty-state p{color:var(--text-3);font-size:.9375rem}
.empty-state .btn-line{margin-top:16px}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card-grad);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-card);
}
.side-card h3{
  font-size:.9375rem;color:var(--text-1);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:3px;height:14px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-accent),var(--brand-primary));
}
.toc-list li{margin:2px 0}
.toc-list a{
  display:flex;gap:10px;padding:7px 10px;border-radius:10px;
  font-size:.875rem;color:var(--text-2);line-height:1.6;
  border-left:2px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-list a:hover{background:rgba(140,165,255,.08);color:var(--text-1)}
.toc-list a.on{color:var(--text-1);border-left-color:var(--brand-accent);background:rgba(45,226,197,.08)}
.toc-num{font-family:var(--font-mono);font-size:.75rem;color:var(--text-3);padding-top:2px}
.toc-empty{font-size:.8125rem;color:var(--text-3);padding:6px 4px}
.hot-list li+li{border-top:1px solid var(--line)}
.hot-list a{
  display:flex;gap:10px;padding:12px 2px;font-size:.875rem;color:var(--text-2);line-height:1.6;
  transition:color .18s ease,transform .18s ease;
}
.hot-list a:hover{color:var(--text-1);transform:translateX(3px)}
.hot-list .idx{font-family:var(--font-mono);font-size:.75rem;color:var(--brand-accent);padding-top:3px}
.side-cta{
  background:linear-gradient(160deg,rgba(90,70,255,.28),rgba(18,26,51,.9));
  border:1px solid rgba(45,226,197,.28);
}
.side-cta p{font-size:.875rem;color:var(--text-2);margin-bottom:16px}
.side-cta .btn-line{width:100%}

/* ---------- 文末 ---------- */
.article-foot{margin-top:48px}
.section-title{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:20px;
}
.section-title h2{font-size:clamp(1.35rem,1.2rem + .6vw,1.6rem);color:var(--text-1)}
.section-title p{margin:6px 0 0;font-size:.875rem;color:var(--text-3)}
.rel-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-grad);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(45,226,197,.45);box-shadow:var(--sh-accent)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.rel-body h3{font-size:1rem;color:var(--text-1);line-height:1.55}
.rel-body p{font-size:.8125rem;color:var(--text-3);margin:0;flex:1 1 auto}
.rel-link{font-size:.8125rem;color:var(--brand-accent);display:inline-flex;align-items:center;gap:6px}
.rel-card:hover .rel-link::after{transform:translateX(4px)}
.rel-link::after{content:"→";transition:transform .18s ease}
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px}
.pager a{
  display:block;padding:18px 20px;border-radius:var(--r-card);
  background:rgba(18,26,51,.55);border:1px solid var(--line);color:var(--text-2);
  transition:border-color .18s ease,background .18s ease,transform .18s ease;
}
.pager a:hover{border-color:rgba(45,226,197,.45);background:rgba(18,26,51,.85);transform:translateY(-2px);color:var(--text-1)}
.pager span{display:block;font-size:.75rem;color:var(--text-3);margin-bottom:6px}
.pager strong{font-weight:600;font-size:.9375rem;color:var(--text-1);display:block;line-height:1.6}
.pager .to-list{text-align:right}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  margin-top:48px;padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  border-radius:var(--r-lg);
  border:1px solid rgba(45,226,197,.26);
  background:linear-gradient(120deg,rgba(90,70,255,.26),rgba(6,9,19,.9) 62%);
  box-shadow:var(--sh-card);
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,197,.75),transparent);
}
.cta-bar h2{font-size:1.375rem;color:var(--text-1);margin-bottom:8px}
.cta-bar p{margin:0;font-size:.9375rem;color:var(--text-2);max-width:620px}
.cta-bar .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-note{font-size:.75rem;color:var(--text-3);margin:12px 0 0;width:100%}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;padding:64px 0 32px;
  background:linear-gradient(180deg,rgba(11,17,34,.6),rgba(6,9,19,.98));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.875rem;color:var(--text-3);margin:0;max-width:360px}
.footer-col h4{font-size:.9375rem;color:var(--text-1);margin-bottom:16px}
.footer-col ul li{margin:0 0 10px}
.footer-col ul a{font-size:.875rem;color:var(--text-2)}
.footer-col ul a:hover{color:#fff}
.footer-contact li{display:flex;align-items:flex-start;gap:8px;font-size:.875rem;color:var(--text-2);margin-bottom:10px}
.footer-contact svg{flex:0 0 auto;margin-top:5px;color:var(--brand-accent)}
.footer-bottom{
  margin-top:40px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:.8125rem;color:var(--text-3)}
.fb-links{display:flex;gap:18px}
.fb-links a{font-size:.8125rem;color:var(--text-3)}
.fb-links a:hover{color:var(--text-1)}

/* ---------- 回到顶部 & 提示 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;border:1px solid rgba(45,226,197,.35);
  background:rgba(11,17,34,.9);color:var(--brand-accent);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,box-shadow .22s ease;
  z-index:1050;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{box-shadow:var(--sh-accent)}
.toast-bar{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);
  padding:12px 22px;border-radius:var(--r-pill);
  background:rgba(18,26,51,.96);border:1px solid rgba(45,226,197,.35);
  color:var(--text-1);font-size:.875rem;
  box-shadow:var(--sh-accent);opacity:0;visibility:hidden;
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  z-index:1060;
}
.toast-bar.show{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-side{display:none}
  .article-main{max-width:100%}
  .nav-search{max-width:420px}
  .nav-links a{padding:8px 9px;font-size:.875rem}
}
@media (max-width:991.98px){
  .nav-search,.nav-links{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .header-cta{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-wrap{padding:24px 0 64px}
  .article-body{padding:28px}
  .rel-grid{grid-template-columns:1fr}
  .cta-bar{padding:26px}
}
@media (max-width:767.98px){
  .container-xl{padding:0 18px}
  .article-head{padding:24px}
  .article-body{padding:22px;font-size:.95rem}
  .article-body h2{margin-top:26px}
  .article-actions .btn-ghost,.article-actions .btn-line{flex:1 1 auto}
  .pager{grid-template-columns:1fr}
  .pager .to-list{text-align:left}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:575.98px){
  .brand-text{font-size:1rem}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .rel-grid{gap:16px}
  .cta-bar h2{font-size:1.125rem}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg-0:#060913;
  --bg-1:#0B1122;
  --bg-2:#121A33;
  --brand-primary:#5A46FF;
  --brand-accent:#2DE2C5;
  --brand-hot:#FF7A45;
  --text-1:#EDF2FF;
  --text-2:#A9B6D6;
  --text-3:#6E7CA0;
  --line:rgba(140,165,255,.16);
  --line-strong:rgba(140,165,255,.30);
  --radius-card:16px;
  --radius-lg:24px;
  --radius-btn:12px;
  --shadow-base:0 8px 28px rgba(3,6,16,.55);
  --shadow-brand:0 12px 36px rgba(90,70,255,.35);
  --shadow-accent:0 0 0 1px rgba(45,226,197,.28),0 10px 34px rgba(45,226,197,.18);
  --container:1200px;
  --gutter:24px;
  --sec-pad:88px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-accent);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:#7ff1de;}
h1,h2,h3,h4{line-height:1.25;letter-spacing:.01em;margin:0;color:var(--text-1);font-weight:700;}
p{margin:0 0 16px;color:var(--text-2);}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand-accent);outline-offset:2px;border-radius:6px;}
.container-xl{max-width:var(--container);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter);}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,9,19,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.site-header.scrolled{background:rgba(6,9,19,.92);border-bottom-color:var(--line-strong);}
.nav-shell{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease;}
.site-header.scrolled .nav-shell{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:34px;height:34px;border-radius:10px 10px 4px 10px;
  display:grid;place-items:center;
  background:linear-gradient(180deg,rgba(90,70,255,.42),rgba(45,226,197,.16));
  border:1px solid rgba(45,226,197,.32);
  box-shadow:0 6px 18px rgba(90,70,255,.28);
}
.brand-text{font-size:1.02rem;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-search{
  position:relative;flex:1 1 auto;max-width:560px;margin:0 auto;
  display:flex;align-items:center;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 4px 4px 14px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:focus-within{
  border-color:rgba(45,226,197,.55);
  box-shadow:0 0 0 3px rgba(45,226,197,.14),0 0 22px rgba(45,226,197,.18);
  background:var(--bg-2);
}
.ns-icon{display:flex;align-items:center;color:var(--text-3);margin-right:8px;}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text-1);padding:8px 4px;font-size:.93rem;
}
.nav-search input::placeholder{color:var(--text-3);}
.ns-btn{
  display:inline-flex;align-items:center;gap:6px;
  border:0;border-radius:999px;cursor:pointer;
  padding:8px 16px;font-size:.875rem;font-weight:600;
  color:#060913;
  background:linear-gradient(135deg,var(--brand-accent),#6ff0d8);
  box-shadow:0 0 0 1px rgba(45,226,197,.35),0 6px 18px rgba(45,226,197,.22);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.ns-btn:hover{filter:brightness(1.05);transform:translateY(-1px);}
.ns-btn:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(45,226,197,.3);}
.nav-links{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:10px;
  font-size:.9rem;color:var(--text-2);white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--text-1);background:rgba(140,165,255,.08);}
.nav-links a.active{color:var(--text-1);background:rgba(90,70,255,.18);box-shadow:inset 0 0 0 1px rgba(140,165,255,.24);}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand-accent);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;
  padding:9px 16px;border-radius:var(--radius-btn);
  font-size:.875rem;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--brand-hot),#ff9b6d 45%,var(--brand-primary));
  box-shadow:0 10px 26px rgba(255,122,69,.28);
  border:0;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.nav-cta:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 14px 32px rgba(255,122,69,.36);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--bg-1);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto;
}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--text-1);border-radius:2px;transition:.2s;}
.nav-toggle span+span{margin-top:5px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:18px 0 22px;
}
.mobile-drawer.open{display:block;}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  background:var(--bg-0);border:1px solid var(--line);border-radius:999px;
  padding:6px 6px 6px 14px;margin-bottom:16px;
}
.drawer-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;padding:8px 0;color:var(--text-1);}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;}
.drawer-links a{
  padding:11px 14px;border-radius:12px;color:var(--text-2);
  background:rgba(140,165,255,.04);border:1px solid var(--line);font-size:.93rem;
}
.drawer-links a.active{color:var(--text-1);border-color:rgba(45,226,197,.4);background:rgba(45,226,197,.08);}
.drawer-cta{display:block;text-align:center;padding:12px;border-radius:12px;color:#fff;font-weight:600;
  background:linear-gradient(135deg,var(--brand-hot),var(--brand-primary));}

@media (max-width:1199.98px){
  .nav-links a{padding:8px 9px;font-size:.86rem;}
  .nav-search{max-width:400px;}
}
@media (max-width:991.98px){
  .nav-search,.nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-shell{height:64px;gap:12px;}
}

/* ============ HERO ============ */
.cat-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--bg-0);
  padding:56px 0 0;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.30;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,9,19,.72),rgba(6,9,19,.94)),
    linear-gradient(90deg,rgba(6,9,19,.9),rgba(6,9,19,.5));
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,165,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,165,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  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%);
}
.cat-hero .container-xl{position:relative;z-index:2;}
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb-bar a{color:var(--text-3);}
.breadcrumb-bar a:hover{color:var(--brand-accent);}
.breadcrumb-bar span.sep{color:rgba(110,124,160,.6);}
.breadcrumb-bar [aria-current]{color:var(--text-2);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 13px;border-radius:999px;font-size:.75rem;letter-spacing:.04em;
  color:var(--brand-accent);background:rgba(45,226,197,.08);
  border:1px solid rgba(45,226,197,.28);margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(1.6rem,2.6vw,2.25rem);max-width:900px;margin-bottom:18px;
}
.cat-hero h1 em{font-style:normal;color:var(--brand-accent);}
.hero-sub{max-width:720px;font-size:1.02rem;color:var(--text-2);margin-bottom:24px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:36px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;font-size:.8rem;
  color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--brand-accent);display:inline-block;}
.anchor-bar{
  position:relative;z-index:2;
  display:flex;gap:6px;overflow-x:auto;
  padding:0 0 14px;
  scrollbar-width:none;
}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-bar a{
  flex:0 0 auto;padding:8px 15px;border-radius:999px;font-size:.83rem;
  color:var(--text-2);background:rgba(11,17,34,.85);
  border:1px solid var(--line);white-space:nowrap;
  transition:.18s;
}
.anchor-bar a:hover{color:var(--text-1);border-color:rgba(45,226,197,.45);background:rgba(45,226,197,.08);}

/* ============ SECTIONS ============ */
section.block{padding:var(--sec-pad) 0;position:relative;}
section.block.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-label{
  display:inline-block;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.14em;
  color:var(--brand-accent);margin-bottom:12px;text-transform:uppercase;
}
.sec-head h2{font-size:clamp(1.35rem,2.2vw,1.75rem);margin-bottom:14px;}
.sec-head p{font-size:.97rem;margin:0;}

/* 判断维度卡 */
.dim-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.dim-card{
  position:relative;padding:26px 24px;border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);box-shadow:var(--shadow-base);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.dim-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:16px 16px 0 0;
  background:linear-gradient(90deg,transparent,rgba(45,226,197,.7),transparent);
}
.dim-card:hover{transform:translateY(-2px);border-color:rgba(45,226,197,.38);box-shadow:var(--shadow-accent);}
.dim-num{font-family:var(--font-mono);font-size:.8rem;color:var(--brand-accent);letter-spacing:.1em;display:block;margin-bottom:14px;}
.dim-card h3{font-size:1.05rem;margin-bottom:10px;}
.dim-card p{font-size:.9rem;margin-bottom:14px;}
.dim-list li{position:relative;padding-left:18px;font-size:.87rem;color:var(--text-2);margin-bottom:7px;}
.dim-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--brand-accent);opacity:.85;}

/* 步骤图文交替 */
.step-row{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:40px 0;
}
.step-row + .step-row{border-top:1px dashed rgba(140,165,255,.14);}
.step-row.rev .step-media{order:2;}
.step-media{position:relative;}
.step-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  box-shadow:var(--shadow-base);
}
.step-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);pointer-events:none;
  background:linear-gradient(200deg,rgba(90,70,255,.22),rgba(6,9,19,.55) 62%);
}
.step-float{
  position:absolute;left:18px;bottom:18px;z-index:2;
  display:flex;align-items:center;gap:9px;
  padding:9px 15px;border-radius:12px;
  font-size:.8rem;color:var(--text-1);
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.04));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.18);
}
.step-float b{font-family:var(--font-mono);color:var(--brand-accent);font-weight:600;}
.step-index{
  font-family:var(--font-mono);font-size:2rem;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(45,226,197,.55);
  display:block;margin-bottom:14px;
}
.step-body h2{font-size:clamp(1.25rem,2vw,1.55rem);margin-bottom:14px;}
.step-body p{font-size:.95rem;}
.step-points{margin-top:18px;display:grid;gap:10px;}
.step-points li{
  display:flex;gap:11px;align-items:flex-start;
  font-size:.9rem;color:var(--text-2);
  padding:11px 14px;border-radius:12px;
  background:rgba(140,165,255,.05);border:1px solid var(--line);
}
.step-points li svg{flex:0 0 auto;margin-top:4px;color:var(--brand-accent);}

/* 核对清单 */
.check-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:20px 22px;border-radius:var(--radius-card);
  background:var(--bg-0);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.check-item:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.check-item .ck{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  background:rgba(45,226,197,.1);border:1px solid rgba(45,226,197,.3);color:var(--brand-accent);
}
.check-item h3{font-size:.98rem;margin-bottom:6px;}
.check-item p{font-size:.86rem;margin:0;}

/* 卡点卡片 */
.issue-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.issue-card{
  position:relative;padding:26px 24px;border-radius:18px 18px 6px 18px;
  background:var(--bg-0);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.issue-card:hover{transform:translateY(-2px);border-color:rgba(90,70,255,.5);box-shadow:var(--shadow-brand);}
.issue-card .ic{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(90,70,255,.16);border:1px solid rgba(140,165,255,.28);
  color:var(--brand-accent);margin-bottom:16px;
}
.issue-card h3{font-size:1.02rem;margin-bottom:10px;}
.issue-card p{font-size:.88rem;margin:0;}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.acc-item{
  border-radius:var(--radius-card);overflow:hidden;
  background:var(--bg-0);border:1px solid var(--line);
  transition:border-color .2s ease;
}
.acc-item:has(.acc-btn[aria-expanded="true"]){border-color:rgba(45,226,197,.4);}
.acc-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:.99rem;font-weight:600;color:var(--text-1);
  position:relative;transition:color .18s ease;
}
.acc-btn::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--brand-accent);opacity:0;transition:opacity .2s ease;
}
.acc-btn[aria-expanded="true"]::before{opacity:1;}
.acc-btn:hover{color:var(--brand-accent);}
.acc-sign{position:relative;flex:0 0 auto;width:16px;height:16px;}
.acc-sign::before,.acc-sign::after{
  content:"";position:absolute;background:var(--brand-accent);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.acc-sign::before{left:0;right:0;top:7px;height:2px;}
.acc-sign::after{top:0;bottom:0;left:7px;width:2px;}
.acc-btn[aria-expanded="true"] .acc-sign::after{transform:scaleY(0);opacity:0;}
.acc-body{padding:0 22px 22px;font-size:.92rem;color:var(--text-2);}
.acc-body p:last-child{margin-bottom:0;}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  padding:52px 48px;
  background:
    radial-gradient(900px 300px at 12% 0%,rgba(90,70,255,.30),transparent 62%),
    radial-gradient(700px 280px at 92% 110%,rgba(45,226,197,.20),transparent 60%),
    var(--bg-2);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-base);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,165,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,165,255,.05) 1px,transparent 1px);
  background-size:48px 48px;opacity:.6;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(1.3rem,2.2vw,1.7rem);margin-bottom:14px;}
.cta-band p{max-width:640px;font-size:.96rem;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-btn);border:0;cursor:pointer;
  font-size:.95rem;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--brand-hot),#ff9a68 40%,var(--brand-primary));
  box-shadow:0 12px 30px rgba(255,122,69,.28);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-main:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 38px rgba(255,122,69,.38);}
.btn-main:active{transform:translateY(0);box-shadow:0 8px 20px rgba(255,122,69,.24);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:.95rem;font-weight:600;color:var(--brand-accent);
  background:transparent;border:1px solid rgba(45,226,197,.45);
  transition:background .18s ease,transform .18s ease,color .18s ease;
}
.btn-ghost:hover{background:rgba(45,226,197,.12);color:#8bf5e3;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:.88rem;font-weight:600;color:var(--brand-accent);}
.arrow-link svg{transition:transform .18s ease;}
.arrow-link:hover svg{transform:translateX(4px);}
.cta-note{margin-top:18px;font-size:.78rem;color:var(--text-3);}
.cta-note a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px;}

/* footer */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--line);}
.footer-brand p{font-size:.88rem;margin:16px 0 0;max-width:340px;color:var(--text-3);}
.footer-col h4{font-size:.92rem;margin-bottom:18px;color:var(--text-1);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:.87rem;color:var(--text-3);}
.footer-col a:hover{color:var(--text-1);}
.footer-contact li{display:flex;align-items:center;gap:9px;font-size:.87rem;color:var(--text-3);}
.footer-contact svg{flex:0 0 auto;color:var(--brand-accent);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;padding-top:24px;}
.footer-bottom p{margin:0;font-size:.8rem;color:var(--text-3);}
.fb-links{display:flex;gap:18px;}
.fb-links a{font-size:.8rem;color:var(--text-3);}
.fb-links a:hover{color:var(--text-1);}

/* back to top */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;
  background:linear-gradient(180deg,rgba(90,70,255,.9),rgba(45,226,197,.55));
  border:1px solid rgba(45,226,197,.45);color:#fff;
  box-shadow:0 0 0 1px rgba(45,226,197,.2),0 12px 30px rgba(45,226,197,.22);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:.25s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{filter:brightness(1.06);}

/* modal */
.modal-content{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02)),var(--bg-2);
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  color:var(--text-1);box-shadow:var(--shadow-base);
}
.modal-header,.modal-footer{border-color:var(--line);}
.modal-title{font-size:1.05rem;font-weight:700;}
.modal-backdrop.show{opacity:.72;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);}
.form-label{font-size:.83rem;color:var(--text-2);margin-bottom:6px;}
.form-control,.form-select{
  background:var(--bg-0);border:1px solid var(--line);border-radius:var(--radius-btn);
  color:var(--text-1);padding:11px 14px;font-size:.9rem;
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus,.form-select:focus{
  background:var(--bg-0);color:var(--text-1);
  border-color:rgba(45,226,197,.6);box-shadow:0 0 0 3px rgba(45,226,197,.14);
}
.form-check-input{background-color:var(--bg-0);border-color:var(--line-strong);}
.form-check-input:checked{background-color:var(--brand-primary);border-color:var(--brand-primary);}
.form-check-label{font-size:.79rem;color:var(--text-3);}
.btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7;}

@media (max-width:991.98px){
  :root{--sec-pad:64px;}
  .dim-grid{grid-template-columns:1fr 1fr;}
  .issue-grid{grid-template-columns:1fr 1fr;}
  .step-row{grid-template-columns:1fr;gap:28px;padding:32px 0;}
  .step-row.rev .step-media{order:0;}
  .check-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  :root{--gutter:18px;}
  .cat-hero{padding-top:36px;}
  .dim-grid,.issue-grid{grid-template-columns:1fr;}
  .cta-band{padding:36px 24px;}
  .cta-actions{gap:10px;}
  .btn-main,.btn-ghost{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-chips{padding-bottom:26px;}
}
@media (max-width:575.98px){
  :root{--sec-pad:56px;}
  .cat-hero h1{font-size:1.6rem;}
  .hero-sub{font-size:.95rem;}
  .acc-btn{padding:16px 16px;font-size:.93rem;}
  .acc-body{padding:0 16px 18px;}
  .step-float{left:12px;bottom:12px;font-size:.74rem;padding:7px 12px;}
  .to-top{right:16px;bottom:16px;width:44px;height:44px;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060913; --bg-1:#0B1122; --bg-2:#121A33;
  --brand-primary:#5A46FF; --brand-accent:#2DE2C5; --brand-hot:#FF7A45;
  --text-1:#EDF2FF; --text-2:#A9B6D6; --text-3:#6E7CA0;
  --line:rgba(140,165,255,.16);
  --line-strong:rgba(140,165,255,.28);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --r-card:16px; --r-lg:24px; --r-pill:999px; --r-btn:12px;
  --sh-1:0 8px 28px rgba(3,6,16,.55);
  --sh-brand:0 12px 36px rgba(90,70,255,.35);
  --sh-accent:0 0 0 1px rgba(45,226,197,.28),0 10px 34px rgba(45,226,197,.18);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:88px;
}
*,*::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-1);
  font-family:var(--font-sans);font-size:1rem;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand-accent);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(90,70,255,.45);color:#fff;}

.container-xl{max-width:1200px;margin-inline:auto;padding-inline:24px;width:100%;}
@media (min-width:1400px){.container-xl{max-width:1280px;}}

/* ---------- 通用标题与文本 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.75rem;letter-spacing:.14em;color:var(--brand-accent);
  text-transform:uppercase;font-family:var(--font-mono);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-accent);display:inline-block;}
.section-title{
  font-size:clamp(1.35rem,1.1rem + 1vw,1.75rem);
  line-height:1.3;letter-spacing:.01em;font-weight:700;
}
.section-sub{color:var(--text-2);font-size:.975rem;margin-top:10px;max-width:720px;}
.section{padding-block:var(--sp-9);position:relative;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:var(--sp-7);}
.section-head .eyebrow{margin-bottom:14px;}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:.95rem;font-weight:600;
  padding:13px 24px;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-main{
  background:linear-gradient(120deg,var(--brand-hot),#FF9A5C 42%,var(--brand-primary));
  color:#fff;box-shadow:0 10px 26px rgba(255,122,69,.26);
}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,122,69,.34);filter:brightness(1.05);}
.btn-main:active{transform:translateY(0);box-shadow:0 6px 16px rgba(255,122,69,.24);}
.btn-ghost{background:transparent;color:var(--brand-accent);border-color:rgba(45,226,197,.45);}
.btn-ghost:hover{background:rgba(45,226,197,.12);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-line{background:rgba(140,165,255,.07);color:var(--text-1);border-color:var(--line);}
.btn-line:hover{border-color:var(--line-strong);background:rgba(140,165,255,.13);transform:translateY(-2px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-accent);
  font-size:.9rem;font-weight:600;
}
.link-arrow svg{transition:transform .18s ease;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- Header / 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,9,19,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(6,9,19,.9);box-shadow:0 12px 30px rgba(3,6,16,.55);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(90,70,255,.35),rgba(45,226,197,.18));
  border:1px solid rgba(45,226,197,.3);
}
.brand-text{font-weight:700;font-size:1.02rem;letter-spacing:.02em;color:var(--text-1);white-space:nowrap;}
.nav-search{
  flex:1 1 auto;max-width:560px;margin-inline:auto;
  display:flex;align-items:center;gap:10px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:4px 4px 4px 16px;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:rgba(45,226,197,.6);box-shadow:var(--sh-accent);}
.nav-search .search-ico{color:var(--text-3);display:grid;place-items:center;flex-shrink:0;}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;color:var(--text-1);
  font-size:.92rem;padding:8px 0;font-family:inherit;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;}
.search-btn{
  display:inline-flex;align-items:center;gap:6px;border:0;cursor:pointer;
  background:linear-gradient(120deg,var(--brand-primary),#7C6BFF);
  color:#fff;font-size:.86rem;font-weight:600;padding:9px 18px;border-radius:var(--r-pill);
  transition:filter .18s ease,transform .18s ease;flex-shrink:0;
}
.search-btn:hover{filter:brightness(1.08);}
.search-btn:active{transform:scale(.98);}
.nav-links{display:flex;align-items:center;gap:4px;flex-shrink:0;}
.nav-links a{
  padding:9px 13px;border-radius:10px;font-size:.92rem;color:var(--text-2);
  transition:color .18s ease,background .18s ease;position:relative;
}
.nav-links a:hover{color:#fff;background:rgba(140,165,255,.09);}
.nav-links a.active{color:var(--brand-accent);background:rgba(45,226,197,.1);}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:1px;
  background:var(--brand-accent);opacity:.6;
}
.header-cta{flex-shrink:0;padding:11px 18px;font-size:.88rem;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  background:rgba(140,165,255,.08);border:1px solid var(--line);color:var(--text-1);cursor:pointer;
}
.mobile-drawer{
  position:fixed;inset:0 0 0 auto;width:min(88vw,360px);z-index:1050;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .28s ease;
  padding:24px;display:flex;flex-direction:column;gap:22px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,16,.6);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:1040;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:11px;background:rgba(140,165,255,.08);
  border:1px solid var(--line);color:var(--text-1);display:grid;place-items:center;cursor:pointer;
}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{
  padding:13px 14px;border-radius:12px;border:1px solid transparent;
  font-size:.98rem;color:var(--text-2);background:rgba(140,165,255,.05);
}
.drawer-links a:hover{border-color:var(--line-strong);color:#fff;}
.drawer-links a.active{color:var(--brand-accent);border-color:rgba(45,226,197,.35);background:rgba(45,226,197,.08);}
.drawer-note{font-size:.84rem;color:var(--text-3);line-height:1.7;}

/* ---------- 面包屑 ---------- */
.breadcrumb-trail{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:.84rem;color:var(--text-3);margin-bottom:28px;
}
.breadcrumb-trail a:hover{color:var(--brand-accent);}
.breadcrumb-trail .cur{color:var(--text-2);}
.breadcrumb-trail span.sep{color:var(--text-3);opacity:.7;}

/* ---------- Hero（分类页2：左标题 右索引卡） ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.34;filter:saturate(.85);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,9,19,.72),rgba(6,9,19,.94)),
    repeating-linear-gradient(0deg,rgba(140,165,255,.05) 0 1px,transparent 1px 46px),
    repeating-linear-gradient(90deg,rgba(140,165,255,.05) 0 1px,transparent 1px 46px);
  pointer-events:none;
}
.page-hero .container-xl{position:relative;z-index:2;padding-block:76px 72px;}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start;}
.hero-copy h1{
  font-size:clamp(1.6rem,1.15rem + 1.6vw,2.25rem);
  line-height:1.28;letter-spacing:.01em;font-weight:700;margin:16px 0 18px;
}
.hero-copy .hero-sub{color:var(--text-2);font-size:1.02rem;max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;align-items:center;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font-size:.8rem;color:var(--text-2);background:rgba(140,165,255,.07);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 14px;
}
.chip svg{color:var(--brand-accent);flex-shrink:0;}
.hero-index{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-lg);
  padding:26px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);position:relative;
}
.hero-index::before{
  content:"";position:absolute;top:0;left:26px;right:26px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,197,.7),transparent);
}
.hero-index h2{font-size:1rem;font-weight:700;letter-spacing:.02em;}
.hero-index .idx-sub{font-size:.84rem;color:var(--text-3);margin-top:6px;}
.idx-list{margin-top:18px;display:flex;flex-direction:column;gap:2px;}
.idx-list a{
  display:flex;align-items:center;gap:12px;padding:12px 10px;border-radius:12px;
  border-bottom:1px dashed rgba(140,165,255,.14);
  transition:background .18s ease,padding .18s ease;
}
.idx-list a:last-child{border-bottom:0;}
.idx-list a:hover{background:rgba(45,226,197,.08);padding-left:16px;}
.idx-num{font-family:var(--font-mono);font-size:.78rem;color:var(--brand-accent);flex-shrink:0;}
.idx-txt{font-size:.92rem;color:var(--text-1);}
.idx-note{font-size:.82rem;color:var(--text-3);margin-top:16px;line-height:1.7;}

/* ---------- 自查要点 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.check-item{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;position:relative;overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.check-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(45,226,197,.8),transparent 70%);
}
.check-item:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--sh-1);}
.check-num{
  font-family:var(--font-mono);font-size:1.5rem;font-weight:600;
  color:rgba(140,165,255,.42);letter-spacing:.02em;font-variant-numeric:tabular-nums;
}
.check-item h3{font-size:1.02rem;font-weight:700;margin:14px 0 8px;}
.check-item p{font-size:.9rem;color:var(--text-2);}

/* ---------- Q&A 主体 ---------- */
.qa-layout{display:grid;grid-template-columns:264px 1fr;gap:44px;align-items:start;}
.qa-index{position:sticky;top:96px;}
.qa-index-title{font-size:.78rem;letter-spacing:.14em;color:var(--text-3);font-family:var(--font-mono);text-transform:uppercase;margin-bottom:14px;}
.qa-index nav{display:flex;flex-direction:column;gap:6px;}
.qa-index nav a{
  display:flex;gap:10px;align-items:baseline;
  padding:11px 14px;border-radius:12px;border-left:2px solid transparent;
  font-size:.92rem;color:var(--text-2);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.qa-index nav a:hover{background:rgba(140,165,255,.07);color:#fff;border-left-color:rgba(45,226,197,.5);}
.qa-index nav a.cur{background:rgba(45,226,197,.08);color:var(--brand-accent);border-left-color:var(--brand-accent);}
.qa-index .index-card{
  margin-top:24px;padding:18px;border-radius:var(--r-card);
  background:rgba(90,70,255,.1);border:1px solid rgba(90,70,255,.3);
}
.qa-index .index-card p{font-size:.84rem;color:var(--text-2);}
.qa-index .index-card a{margin-top:12px;display:inline-flex;}
.qa-dropdown{display:none;}

.qa-group{margin-bottom:52px;scroll-margin-top:104px;}
.qa-group:last-child{margin-bottom:0;}
.qa-group-head{border-left:3px solid var(--brand-accent);padding-left:16px;margin-bottom:22px;}
.qa-group-head .group-num{
  font-family:var(--font-mono);font-size:.78rem;color:var(--brand-accent);letter-spacing:.14em;
}
.qa-group-head h2{font-size:clamp(1.2rem,1.02rem + .8vw,1.5rem);font-weight:700;margin-top:8px;line-height:1.35;}
.qa-group-head p{font-size:.9rem;color:var(--text-2);margin-top:8px;}
.qa-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;margin-bottom:14px;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.qa-card:hover{border-color:rgba(45,226,197,.35);transform:translateY(-2px);box-shadow:var(--sh-1);}
.qa-card h3{
  font-size:1.06rem;font-weight:700;line-height:1.5;display:flex;gap:10px;align-items:flex-start;
}
.qa-card h3 .q-mark{
  font-family:var(--font-mono);font-size:.8rem;color:var(--brand-primary);
  background:rgba(90,70,255,.16);border:1px solid rgba(90,70,255,.35);
  border-radius:6px;padding:1px 7px;flex-shrink:0;margin-top:3px;
}
.qa-card .qa-body{margin-top:14px;padding-left:0;}
.qa-card p{font-size:.94rem;color:var(--text-2);}
.qa-card ul{margin-top:12px;display:flex;flex-direction:column;gap:9px;}
.qa-card ul li{
  position:relative;padding-left:20px;font-size:.9rem;color:var(--text-2);line-height:1.75;
}
.qa-card ul li::before{
  content:"";position:absolute;left:2px;top:.7em;width:6px;height:6px;border-radius:2px;
  background:var(--brand-accent);opacity:.75;
}
.qa-tip{
  margin-top:14px;font-size:.86rem;color:var(--text-3);
  border-left:2px solid rgba(140,165,255,.3);padding-left:12px;
}

/* ---------- 保护清单（图文） ---------- */
.guard-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.guard-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);}
.guard-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.guard-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,9,19,.05),rgba(6,9,19,.72));
}
.guard-badge{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(6,9,19,.7);border:1px solid rgba(45,226,197,.35);
  border-radius:12px;padding:10px 14px;font-size:.82rem;color:var(--text-1);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.guard-list{margin-top:26px;display:flex;flex-direction:column;gap:16px;}
.guard-list li{
  display:flex;gap:14px;background:var(--bg-1);border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 20px;
  transition:border-color .2s ease,transform .2s ease;
}
.guard-list li:hover{border-color:rgba(45,226,197,.32);transform:translateX(3px);}
.guard-ico{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;display:grid;place-items:center;
  background:rgba(45,226,197,.1);border:1px solid rgba(45,226,197,.3);color:var(--brand-accent);
}
.guard-list h3{font-size:.98rem;font-weight:700;}
.guard-list p{font-size:.88rem;color:var(--text-2);margin-top:4px;}

/* ---------- 误区提醒 ---------- */
.myth-list{display:flex;flex-direction:column;gap:12px;}
.myth-item{
  display:grid;grid-template-columns:56px 1fr;gap:20px;align-items:baseline;
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--bg-1);border:1px solid var(--line);
  border-left:3px solid rgba(255,122,69,.6);
  transition:background .2s ease,border-color .2s ease;
}
.myth-item:hover{background:var(--bg-2);border-color:var(--line-strong);}
.myth-num{
  font-family:var(--font-mono);font-size:.85rem;color:var(--brand-hot);
  letter-spacing:.08em;font-variant-numeric:tabular-nums;
}
.myth-item h3{font-size:1rem;font-weight:700;margin-bottom:6px;}
.myth-item p{font-size:.9rem;color:var(--text-2);}

/* ---------- CTA 横条 ---------- */
.cta-bar{
  background:linear-gradient(115deg,rgba(90,70,255,.24),rgba(18,26,51,.9) 55%,rgba(45,226,197,.16));
  border:1px solid var(--line-strong);border-radius:var(--r-lg);
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,197,.75),transparent);
}
.cta-bar h2{font-size:clamp(1.15rem,1rem + .7vw,1.5rem);font-weight:700;line-height:1.35;}
.cta-bar p{font-size:.92rem;color:var(--text-2);margin-top:10px;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

/* ---------- 提示条 / 回到顶部 ---------- */
.global-toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,20px);
  background:rgba(11,17,34,.96);border:1px solid rgba(45,226,197,.4);
  color:var(--text-1);font-size:.9rem;padding:12px 22px;border-radius:var(--r-pill);
  box-shadow:var(--sh-accent);opacity:0;visibility:hidden;transition:all .25s ease;z-index:1200;
}
.global-toast.is-show{opacity:1;visibility:visible;transform:translate(-50%,0);}
.back-top{
  position:fixed;right:24px;bottom:28px;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;z-index:1100;
  background:linear-gradient(140deg,var(--brand-primary),#7C6BFF);color:#fff;border:1px solid rgba(45,226,197,.4);
  box-shadow:var(--sh-brand);opacity:0;visibility:hidden;transition:all .25s ease;
}
.back-top.is-show{opacity:1;visibility:visible;}
.back-top:hover{transform:translateY(-3px);box-shadow:var(--sh-accent);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:64px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:.88rem;color:var(--text-2);max-width:340px;}
.footer-col h4{font-size:.92rem;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:.88rem;color:var(--text-2);transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.footer-contact li{display:flex;align-items:center;gap:9px;font-size:.86rem;color:var(--text-2);}
.footer-contact svg{color:var(--brand-accent);flex-shrink:0;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:.82rem;color:var(--text-3);}
.fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.fb-links a{font-size:.82rem;color:var(--text-3);}
.fb-links a:hover{color:var(--brand-accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:36px;}
  .qa-layout{grid-template-columns:230px 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .header-inner{flex-wrap:wrap;height:auto;padding-block:12px;gap:12px;}
  .nav-links{display:none;}
  .nav-search{order:3;flex:1 0 100%;max-width:none;margin:0;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero .container-xl{padding-block:56px 52px;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
  .guard-grid{grid-template-columns:1fr;gap:32px;}
  .qa-layout{grid-template-columns:1fr;gap:24px;}
  .qa-index{position:static;display:none;}
  .qa-dropdown{display:block;margin-bottom:28px;}
  .qa-dropdown summary{
    list-style:none;cursor:pointer;padding:14px 18px;border-radius:12px;
    background:var(--bg-1);border:1px solid var(--line);font-size:.94rem;
    display:flex;align-items:center;justify-content:space-between;
  }
  .qa-dropdown summary::-webkit-details-marker{display:none;}
  .qa-dropdown[open] summary{border-color:rgba(45,226,197,.4);}
  .qa-dropdown .dd-list{display:flex;flex-direction:column;gap:4px;padding:12px 0 0;}
  .qa-dropdown .dd-list a{
    padding:11px 16px;border-radius:10px;font-size:.9rem;color:var(--text-2);
    background:rgba(140,165,255,.05);
  }
  .qa-dropdown .dd-list a:hover{color:var(--brand-accent);}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding-block:64px;}
}
@media (max-width:767.98px){
  .section{padding-block:56px;}
  .hero-copy h1{font-size:clamp(1.45rem,1.1rem + 2vw,1.85rem);}
  .check-grid{gap:14px;}
  .myth-item{grid-template-columns:1fr;gap:8px;padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .back-top{right:16px;bottom:18px;}
}
@media (max-width:575.98px){
  .container-xl{padding-inline:18px;}
  .check-grid{grid-template-columns:1fr;}
  .brand-text{font-size:.95rem;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .qa-card{padding:20px;}
  .qa-card h3{font-size:1rem;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
}