/* roulang page: index */
:root{
  --brand:#1D5CD8; --brand-dark:#1A52C0; --brand-soft:#E8F0FE;
  --accent:#FF7A45; --support:#0FAF9B;
  --bg:#F6F8FC; --card:#FFFFFF; --fill:#EEF3FB; --line:#E4EAF4;
  --t1:#101B2D; --t2:#586A82; --t3:#8496AC;
  --r-card:16px; --r-sm:12px; --r-btn:10px; --r-img:14px;
  --sh-card:0 1px 2px rgba(16,27,45,.05), 0 10px 28px -14px rgba(16,27,45,.14);
  --sh-lift:0 4px 10px rgba(16,27,45,.07), 0 20px 44px -18px rgba(29,92,216,.22);
  --sidebar-w:248px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--t1);
  font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Source Han Sans SC',system-ui,sans-serif;
  font-size:16.5px; line-height:1.9;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:8px;z-index:200}
.skip:focus{left:16px;top:12px}

/* ---------- 布局骨架 ---------- */
.app-main{padding-top:56px}
@media (min-width:1024px){
  .app-main{padding-top:0;margin-left:var(--sidebar-w);transition:margin-left .22s ease}
  body[data-collapsed="1"]{--sidebar-w:76px}
}
.mobile-topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;gap:10px;
}
@media (min-width:1024px){.mobile-topbar{display:none}}

.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;background:#fff;
  border-right:1px solid var(--line);z-index:80;display:flex;flex-direction:column;
  transform:translateX(-100%);transition:transform .22s ease,width .22s ease;
}
body.drawer-open .sidebar{transform:translateX(0)}
@media (min-width:1024px){
  .sidebar{width:var(--sidebar-w);max-width:none;transform:none}
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,27,45,.45);z-index:75;opacity:0;pointer-events:none;
  transition:opacity .2s ease;
}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}
@media (min-width:1024px){.drawer-mask{display:none}}

.brand-block{height:72px;display:flex;align-items:center;gap:10px;padding:0 18px;border-bottom:1px solid var(--line);flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:linear-gradient(140deg,var(--brand),#3C7BF0);
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 36px;
}
.brand-text{font-size:15.5px;font-weight:700;line-height:1.2;letter-spacing:.3px}
.brand-sub{font-size:11.5px;color:var(--t3);letter-spacing:1.4px;margin-top:2px}

.side-nav{padding:14px 12px;overflow-y:auto;flex:1 1 auto}
.side-group{font-size:11.5px;color:var(--t3);letter-spacing:1.6px;padding:12px 12px 8px}
.nav-item{
  display:flex;align-items:center;gap:11px;height:44px;padding:0 12px;border-radius:10px;
  color:var(--t2);font-size:15px;position:relative;transition:background .16s ease,color .16s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:var(--fill);color:var(--t1)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-item.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--accent)}
.side-foot{padding:14px 16px 18px;border-top:1px solid var(--line);flex:0 0 auto}
.side-member{width:100%;height:40px;border-radius:10px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:background .16s ease,transform .16s ease}
.side-member:hover{background:var(--brand-dark);transform:translateY(-1px)}
.side-note{font-size:12px;color:var(--t3);margin-top:10px;line-height:1.7}
.side-collapse{
  position:absolute;right:-13px;top:26px;width:26px;height:26px;border-radius:50%;background:#fff;
  border:1px solid var(--line);display:none;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--sh-card);color:var(--t2);
}
@media (min-width:1024px){.side-collapse{display:flex}}
.side-collapse svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s ease}
body[data-collapsed="1"] .side-collapse svg{transform:rotate(180deg)}
body[data-collapsed="1"] .brand-text,
body[data-collapsed="1"] .brand-sub,
body[data-collapsed="1"] .side-group,
body[data-collapsed="1"] .nav-label,
body[data-collapsed="1"] .side-foot{display:none}
body[data-collapsed="1"] .brand-block{justify-content:center;padding:0}
body[data-collapsed="1"] .side-nav{padding:14px 10px}
body[data-collapsed="1"] .nav-item{justify-content:center;padding:0}

/* ---------- 容器与基础组件 ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:0 18px}
@media (min-width:768px){.wrap{padding:0 28px}}
@media (min-width:1024px){.wrap{padding:0 40px}}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:72px 0}}
.section-tight{padding:40px 0}
@media (min-width:1024px){.section-tight{padding:56px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:26px;flex-wrap:wrap}
.eyebrow{font-size:12.5px;letter-spacing:2px;color:var(--brand);font-weight:700}
.h2{font-size:22px;font-weight:700;margin-top:8px}
@media (min-width:1024px){.h2{font-size:30px}}
.sec-desc{color:var(--t2);font-size:15px;margin-top:10px;max-width:660px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-lift)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(16,27,45,.2)}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(29,92,216,.4)}
.btn-ghost:hover{background:var(--fill);border-color:var(--brand)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.link-more{color:var(--brand);font-size:14.5px;font-weight:600}
.link-more:hover{text-decoration:underline;text-underline-offset:3px}

.badge{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.3px}
.badge-brand{background:var(--brand-soft);color:var(--brand)}
.badge-accent{background:rgba(255,122,69,.14);color:#C24A15}
.badge-support{background:rgba(15,175,155,.14);color:#067A6D}
.badge-muted{background:var(--fill);color:var(--t2)}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.card:hover{box-shadow:var(--sh-lift);transform:translateY(-2px);border-color:rgba(29,92,216,.35)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero::before{content:"";position:absolute;inset:0;background:rgba(246,248,252,.88)}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.05;
  background-image:radial-gradient(var(--brand) 1px, transparent 1px);
  background-size:22px 22px;
}
.hero-inner{position:relative;z-index:2;padding:52px 0 56px}
@media (min-width:1024px){.hero-inner{padding:64px 0 76px;min-height:520px;display:flex;align-items:center}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px}}
.hero h1{font-size:28px;font-weight:800;line-height:1.3;letter-spacing:.2px}
@media (min-width:1024px){.hero h1{font-size:42px;line-height:1.24}}
.hero h1 .hl{color:var(--brand)}
.hero-sub{font-size:16px;color:var(--t2);margin-top:16px;font-weight:500}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:22px}
.hero-point{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--t1);font-weight:500}
.hero-point svg{width:17px;height:17px;stroke:var(--support);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-card)}
.hero-veil{position:absolute;inset:0;border-radius:var(--r-card);background:linear-gradient(180deg,rgba(255,255,255,.14),rgba(16,27,45,.14))}
.hero-float{
  position:absolute;right:14px;bottom:-18px;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--sh-lift);min-width:190px;
}
.hero-float .k{font-size:12px;color:var(--t3);letter-spacing:1px}
.hero-float .v{font-size:17px;font-weight:700;margin-top:4px}
.hero-float .v em{font-style:normal;color:var(--accent);font-size:20px;margin-right:2px}
@media (max-width:1023px){.hero-float{display:none}}

/* ---------- 权益对比表 ---------- */
.table-shell{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden}
.benefit-table{width:100%;border-collapse:collapse;font-size:14.5px}
.benefit-table thead th{
  position:sticky;top:0;z-index:3;background:#fff;border-bottom:1px solid var(--line);
  padding:16px 14px;font-size:14px;font-weight:700;color:var(--t1);text-align:center;
}
.benefit-table thead th:first-child{text-align:left;color:var(--t2);font-weight:600;width:26%}
.benefit-table thead th.rec{background:var(--brand-soft);color:var(--brand)}
.benefit-table tbody td{padding:0 14px;height:56px;border-bottom:1px solid var(--line);text-align:center;color:var(--t2)}
.benefit-table tbody td:first-child{text-align:left;color:var(--t1);font-weight:500}
.benefit-table tbody td.rec{background:var(--brand-soft);color:var(--brand);font-weight:600}
.benefit-table tbody tr:nth-child(even) td{background:#FAFCFF}
.benefit-table tbody tr:nth-child(even) td.rec{background:#E3EDFD}
.benefit-table tbody tr:last-child td{border-bottom:none}
.tick{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:rgba(15,175,155,.14);color:#067A6D;font-size:12px;font-weight:700}
.dash{color:var(--t3)}
.table-note{font-size:13px;color:var(--t3);margin-top:12px;line-height:1.8}
.table-scroll{overflow-x:auto}
.table-scroll-tip{display:none;font-size:12.5px;color:var(--t3);margin-top:8px}
.rec-flag{display:inline-flex;margin-bottom:6px}

.mobile-benefits{display:block}
@media (min-width:900px){.mobile-benefits{display:none}}
@media (max-width:899px){.desktop-benefits{display:none}.table-scroll-tip{display:block}}
.tier-tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px}
.tier-tab{
  flex:0 0 auto;height:38px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--t2);font-size:14px;font-weight:600;cursor:pointer;transition:all .16s ease;
}
.tier-tab.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.tier-panel{display:none;margin-top:14px}
.tier-panel.active{display:block}
.tier-row{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:13px 15px;margin-bottom:9px}
.tier-row span:first-child{font-size:14.5px;color:var(--t1);font-weight:500}
.tier-row span:last-child{font-size:13.5px;color:var(--t2)}

/* ---------- 等级亮点 ---------- */
.tier-lead{display:grid;gap:26px}
@media (min-width:1024px){.tier-lead{grid-template-columns:2fr 1fr;gap:36px;align-items:start}}
.step-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-card);margin-bottom:16px;transition:box-shadow .18s ease,transform .18s ease}
.step-item:hover{box-shadow:var(--sh-lift);transform:translateY(-2px)}
.step-num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:2px}
.step-item h3{font-size:18px;margin-top:8px}
.step-item p{color:var(--t2);font-size:14.5px;margin-top:8px}
.bar{height:6px;border-radius:6px;background:var(--fill);margin-top:16px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--brand),#5B92F5)}
.sticky-side{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card)}
@media (min-width:1024px){.sticky-side{position:sticky;top:24px}}
.kv{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:12px 0;border-bottom:1px dashed var(--line)}
.kv:last-of-type{border-bottom:none}
.kv dt{color:var(--t3)}
.kv dd{margin:0;color:var(--t1);font-weight:600}

/* ---------- 专属内容预览 ---------- */
.lock-grid{display:grid;gap:18px}
@media (min-width:900px){
  .lock-row-1{display:grid;grid-template-columns:8fr 4fr;gap:18px}
  .lock-row-1 .lock-col{display:grid;gap:18px}
  .lock-row-2{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
}
@media (max-width:899px){.lock-row-2{margin-top:18px;display:grid;gap:18px}}
.lock-card{position:relative;display:block;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card);background:#fff;transition:box-shadow .18s ease,transform .18s ease}
.lock-card:hover{box-shadow:var(--sh-lift);transform:translateY(-2px)}
.lock-card img{width:100%;object-fit:cover}
.lock-card.big img{aspect-ratio:16/9}
.lock-card.small img{aspect-ratio:16/9}
.lock-card.mini img{aspect-ratio:16/10}
.lock-fog{position:absolute;inset:0;background:rgba(255,255,255,.55);display:flex;align-items:center;justify-content:center;padding:16px}
.lock-hint{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:10px 14px;font-size:13.5px;color:var(--t2);text-align:center;box-shadow:var(--sh-card)}
.lock-hint b{display:block;color:var(--t1);font-size:14.5px;margin-bottom:4px}
.lock-badge{position:absolute;top:12px;right:12px;width:28px;height:28px;border-radius:50%;background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-card)}
.lock-badge svg{width:14px;height:14px;stroke:var(--brand);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}

/* ---------- FAQ ---------- */
.faq-list{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--sh-card)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:none;text-align:left;padding:16px 20px;font-size:15.5px;font-weight:600;color:var(--t1);
  cursor:pointer;transition:background .16s ease;
}
.faq-q:hover{background:#F8FAFF}
.faq-icon{width:22px;height:22px;flex:0 0 22px;transition:transform .2s ease-out;color:var(--brand)}
.faq-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-item.open .faq-q{color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-a-inner{padding:0 20px 20px;color:var(--t2);font-size:14.8px;line-height:1.9}
.faq-a-inner a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:grid;gap:18px;align-items:center;background:rgba(29,92,216,.06);
  border:1px solid rgba(29,92,216,.22);border-radius:var(--r-card);padding:26px 24px;
}
@media (min-width:900px){.cta-bar{grid-template-columns:1fr auto;padding:30px 32px}}
.cta-bar h2{font-size:20px}
@media (min-width:1024px){.cta-bar h2{font-size:24px}}
.cta-bar p{color:var(--t2);font-size:14.8px;margin-top:8px}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;gap:18px}
@media (min-width:1024px){.news-grid{grid-template-columns:2fr 1fr;gap:24px}}
.news-lead{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.news-lead:hover{box-shadow:var(--sh-lift);transform:translateY(-2px);border-color:rgba(29,92,216,.35)}
.news-lead img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-lead-body{padding:20px 22px 22px}
.news-lead h3{font-size:18px;margin-top:12px;transition:color .16s ease}
.news-lead:hover h3{color:var(--brand)}
.news-lead p{color:var(--t2);font-size:14.6px;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:14px;font-size:13px;color:var(--t3)}
.news-side{display:grid;gap:14px}
.news-mini{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:12px;box-shadow:var(--sh-card);transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.news-mini:hover{box-shadow:var(--sh-lift);transform:translateY(-2px);border-color:rgba(29,92,216,.35)}
.news-mini img{width:96px;height:72px;object-fit:cover;border-radius:10px;flex:0 0 96px}
.news-mini h4{font-size:15px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .16s ease}
.news-mini:hover h4{color:var(--brand)}
.news-mini time{font-size:12.5px;color:var(--t3);display:block;margin-top:6px}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:56px 20px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);color:var(--t3);font-size:14.5px}
.empty-state svg{width:34px;height:34px;stroke:var(--t3);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 信任条 ---------- */
.trust{display:grid;gap:14px;border-top:1px solid var(--line);padding-top:22px}
@media (min-width:900px){.trust{grid-template-columns:repeat(3,1fr);gap:32px}}
.trust-item{display:flex;gap:12px;align-items:flex-start;font-size:14.3px;color:var(--t2)}
.trust-item b{color:var(--t1);font-weight:600}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 8px;margin-top:8px}
.dot.g{background:var(--support)}
.dot.b{background:var(--brand)}

/* ---------- 页脚 ---------- */
.site-foot{background:#0F1B2D;color:#C9D5E6;margin-top:40px;padding:52px 0 26px}
.foot-grid{display:grid;gap:30px}
@media (min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}}
.site-foot h3{font-size:14px;color:#fff;letter-spacing:.6px;margin-bottom:14px}
.site-foot p{font-size:13.8px;line-height:1.9;color:#9FB0C7}
.foot-links li{margin-bottom:11px}
.foot-links a{font-size:14px;color:#C9D5E6;transition:color .16s ease}
.foot-links a:hover{color:#fff}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(140deg,#2F71E8,#1D5CD8);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.foot-brand strong{color:#fff;font-size:15.5px;letter-spacing:.4px}
.foot-bottom{border-top:1px solid rgba(201,213,230,.16);margin-top:34px;padding-top:18px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;font-size:13px;color:#8CA0BA}
.to-top{height:36px;padding:0 14px;border-radius:10px;border:1px solid rgba(201,213,230,.3);background:transparent;color:#C9D5E6;font-size:13px;cursor:pointer;transition:all .16s ease}
.to-top:hover{background:rgba(255,255,255,.08);color:#fff}

.icon-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;display:inline-flex;align-items:center;justify-content:center;color:var(--t2);cursor:pointer;transition:all .16s ease}
.icon-btn:hover{background:var(--fill);color:var(--brand);border-color:rgba(29,92,216,.35)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* roulang page: article */
:root{
    --brand:#1D5CD8;
    --brand-dark:#1749AE;
    --accent:#FF7A45;
    --support:#0FAF9B;
    --bg:#F6F8FC;
    --card:#FFFFFF;
    --soft:#EEF3FB;
    --soft-blue:#E8F0FE;
    --line:#E4EAF4;
    --text:#101B2D;
    --text-2:#586A82;
    --text-3:#8496AC;
    --r-card:16px;
    --r-sm:12px;
    --r-btn:10px;
    --shadow-card:0 1px 2px rgba(16,27,45,.05), 0 10px 28px -14px rgba(16,27,45,.14);
    --shadow-hover:0 4px 10px rgba(16,27,45,.07), 0 20px 44px -18px rgba(29,92,216,.22);
    --side-w:248px;
    --side-mini:76px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
    font-size:16.5px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button,input,textarea{font:inherit;color:inherit}
  button{cursor:pointer;background:none;border:0}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
  ul,ol{padding:0;list-style:none}
  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}

  /* ---------- 侧栏 App Shell ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
    background:#fff;border-right:1px solid var(--line);
    display:flex;flex-direction:column;z-index:60;
    transition:width .2s ease,transform .22s ease;
  }
  .side-head{
    height:72px;display:flex;align-items:center;gap:10px;
    padding:0 14px;border-bottom:1px solid var(--line);flex:none;
  }
  .brand-mark{
    width:34px;height:34px;flex:none;border-radius:10px;background:var(--brand);
    color:#fff;display:inline-flex;align-items:center;justify-content:center;
    font-weight:700;font-size:16px;letter-spacing:.02em;
  }
  .brand-text{
    font-weight:700;font-size:15.5px;color:var(--text);
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .side-toggle{margin-left:auto;flex:none}
  .icon-btn{
    width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--text-2);
    transition:background .18s ease,color .18s ease,border-color .18s ease;
  }
  .icon-btn:hover{background:var(--soft);color:var(--text)}
  .icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .side-body{flex:1;overflow-y:auto;padding:16px 14px}
  .nav-group{font-size:12px;color:var(--text-3);letter-spacing:.08em;margin:4px 0 8px;padding-left:12px}
  .side-nav{display:flex;flex-direction:column;gap:4px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;height:44px;
    padding:0 12px;border-radius:10px;color:var(--text-2);font-size:15px;
    transition:background .18s ease,color .18s ease;
  }
  .nav-item svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .nav-item:hover{background:var(--soft);color:var(--text)}
  .nav-item.active{background:var(--soft-blue);color:var(--brand);font-weight:600}
  .nav-item.active::before{
    content:'';position:absolute;left:-9px;top:50%;transform:translateY(-50%);
    width:3px;height:20px;border-radius:2px;background:var(--accent);
  }
  .side-cta{margin-top:22px;padding:16px;border:1px solid var(--line);border-radius:var(--r-card);background:#FBFCFE}
  .side-hint{margin-top:10px;font-size:12.5px;line-height:1.7;color:var(--text-3)}
  .side-foot{
    flex:none;padding:14px 18px;border-top:1px solid var(--line);
    font-size:12.5px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  body.collapsed .sidebar{width:var(--side-mini)}
  body.collapsed .sidebar .brand-mark,
  body.collapsed .sidebar .brand-text,
  body.collapsed .sidebar .nav-label,
  body.collapsed .sidebar .nav-group,
  body.collapsed .sidebar .side-cta,
  body.collapsed .sidebar .side-foot{display:none}
  body.collapsed .side-head{justify-content:center;padding:0 8px}
  body.collapsed .side-toggle{margin:0}
  body.collapsed .side-body{padding:16px 12px}
  body.collapsed .nav-item{justify-content:center;padding:0}

  .mask{
    position:fixed;inset:0;background:rgba(16,27,45,.45);
    opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:55;
  }
  .mask.show{opacity:1;visibility:visible}

  .mobile-topbar{
    display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:50;
    background:#fff;border-bottom:1px solid var(--line);
    align-items:center;justify-content:space-between;gap:10px;padding:0 14px;
  }

  /* ---------- 主内容 ---------- */
  .app-main{margin-left:var(--side-w);min-height:100vh}
  body.collapsed .app-main{margin-left:var(--side-mini)}
  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 40px}

  /* ---------- 按钮 / 徽章 / 标签 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(29,92,216,.65)}
  .btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2)}
  .btn-ghost{background:#fff;color:var(--brand);border-color:rgba(29,92,216,.35)}
  .btn-ghost:hover{background:var(--soft)}
  .btn-sm{height:36px;padding:0 14px;font-size:13.5px;border-radius:9px}
  .btn-block{width:100%}
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;line-height:1;
  }
  .badge-brand{background:var(--soft-blue);color:var(--brand)}
  .badge-accent{background:#FFF0E9;color:#D9531E}
  .badge-support{background:#E4F7F4;color:#0A8577}
  .tag{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
    background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--text-2);
    transition:color .18s ease,border-color .18s ease,background .18s ease;
  }
  .tag:hover{color:var(--brand);border-color:rgba(29,92,216,.35);background:var(--soft)}

  /* ---------- 面包屑 ---------- */
  .crumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--text-3);padding:28px 0 20px;
  }
  .crumb a{color:var(--text-3)}
  .crumb a:hover{color:var(--brand)}
  .crumb .sep{color:#C3CFE0}
  .crumb .cur{color:var(--text);font-weight:600;max-width:60%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

  /* ---------- 文章头 ---------- */
  .article-shell{max-width:760px;margin:0 auto}
  .art-head{padding-bottom:28px;border-bottom:1px solid var(--line)}
  .art-title{
    font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-.01em;
    margin:16px 0 18px;overflow-wrap:break-word;
  }
  .art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--text-2)}
  .art-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CFE0}

  /* ---------- 正文 ---------- */
  .article-body{
    padding:36px 0 8px;font-size:17px;line-height:1.95;color:var(--text);
    overflow-wrap:break-word;
  }
  .article-body p{margin:0 0 20px}
  .article-body h2{
    font-size:26px;line-height:1.35;font-weight:700;
    margin:44px 0 16px;padding-left:14px;border-left:4px solid var(--brand);
  }
  .article-body h3{font-size:20px;line-height:1.45;font-weight:700;margin:32px 0 12px}
  .article-body h4{font-size:17px;font-weight:700;margin:24px 0 10px}
  .article-body ul{margin:0 0 20px;padding-left:22px;list-style:disc}
  .article-body ol{margin:0 0 20px;padding-left:24px;list-style:decimal}
  .article-body li{margin-bottom:8px}
  .article-body ul li::marker{color:var(--brand)}
  .article-body ol li::marker{color:var(--brand);font-weight:600}
  .article-body blockquote{
    margin:0 0 22px;padding:16px 20px;background:var(--soft);
    border-left:3px solid var(--brand);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-2);
  }
  .article-body blockquote p:last-child{margin:0}
  .article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--brand-dark)}
  .article-body img{border-radius:14px;margin:24px auto}
  .article-body figure{margin:24px 0}
  .article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
  .article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:0 0 22px}
  .article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
  .article-body th{background:var(--soft);font-weight:600}
  .article-body tr:nth-child(even) td{background:#FAFCFF}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
  .article-body code{background:var(--soft);padding:2px 6px;border-radius:6px;font-size:15px}

  .empty-state{
    margin:8px 0 4px;padding:40px 28px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);box-shadow:var(--shadow-card);text-align:center;
  }
  .empty-title{font-size:20px;font-weight:700;margin-bottom:8px}
  .empty-desc{font-size:15px;color:var(--text-2);margin-bottom:22px}

  /* ---------- 文末工具 ---------- */
  .art-foot{padding:32px 0 0;border-top:1px solid var(--line);margin-top:40px}
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
  .tool-row{display:flex;align-items:center;gap:10px}
  .tool-btn{
    width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--text-2);
    transition:background .18s ease,color .18s ease,border-color .18s ease;
  }
  .tool-btn:hover{background:var(--soft);color:var(--brand);border-color:rgba(29,92,216,.35)}
  .tool-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .tool-note{font-size:13px;color:var(--text-3);margin-left:4px}

  /* ---------- 上一篇 / 下一篇 ---------- */
  .pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
  .pager-item{
    display:block;padding:18px 20px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);box-shadow:var(--shadow-card);
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .pager-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(29,92,216,.35)}
  .pager-dir{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:6px}
  .pager-title{display:block;font-size:15.5px;font-weight:600;line-height:1.6;color:var(--text)}
  .pager-item.rt{text-align:right}

  .back-line{margin-top:22px}
  .text-link{color:var(--brand);font-size:14.5px;font-weight:600;text-decoration:none}
  .text-link:hover{text-decoration:underline;text-underline-offset:4px}

  /* ---------- 相关推荐 ---------- */
  .section{margin-top:96px}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
  .sec-title{font-size:30px;line-height:1.3;font-weight:700}
  .sec-sub{margin-top:10px;font-size:15px;color:var(--text-2)}
  .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .rel-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .rel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:rgba(29,92,216,.35)}
  .rel-thumb{position:relative;aspect-ratio:4/3;background:var(--soft)}
  .rel-thumb img{width:100%;height:100%;object-fit:cover}
  .rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .rel-title{font-size:17px;font-weight:700;line-height:1.55}
  .rel-card:hover .rel-title{color:var(--brand)}
  .rel-time{font-size:13px;color:var(--text-3);margin-top:auto}

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:96px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
    padding:32px 36px;border:1px solid rgba(29,92,216,.22);border-radius:var(--r-card);
    background:rgba(29,92,216,.06);
  }
  .cta-band h2{font-size:24px;font-weight:700;line-height:1.4}
  .cta-band p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:560px}

  /* ---------- 页脚 ---------- */
  .site-foot{background:#0F1B2D;color:#C9D5E6;margin-top:96px}
  .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding:56px 0 34px}
  .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .foot-mark{
    width:32px;height:32px;flex:none;border-radius:9px;background:var(--brand);
    color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  }
  .foot-brand strong{color:#fff;font-size:16px}
  .site-foot p{font-size:14px;line-height:1.85;color:#C9D5E6}
  .site-foot h3{color:#fff;font-size:14.5px;font-weight:600;margin-bottom:14px}
  .foot-links li{margin-bottom:10px}
  .foot-links a{font-size:14px;color:#C9D5E6;transition:color .18s ease}
  .foot-links a:hover{color:#fff}
  .foot-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
    padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#93A4BD;
  }
  .to-top{
    height:36px;padding:0 16px;border-radius:9px;border:1px solid rgba(255,255,255,.22);
    color:#C9D5E6;font-size:13px;transition:background .18s ease,color .18s ease;
  }
  .to-top:hover{background:rgba(255,255,255,.1);color:#fff}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .wrap{padding:0 32px}
  }
  @media (max-width:1023px){
    .sidebar{
      transform:translateX(-100%);width:280px;
      box-shadow:0 20px 50px -20px rgba(16,27,45,.4);
    }
    .sidebar.open{transform:translateX(0)}
    .app-main{margin-left:0;padding-top:56px}
    body.collapsed .app-main{margin-left:0}
    body.collapsed .sidebar{width:280px}
    body.collapsed .sidebar .brand-mark,
    body.collapsed .sidebar .brand-text,
    body.collapsed .sidebar .nav-label,
    body.collapsed .sidebar .nav-group,
    body.collapsed .sidebar .side-cta,
    body.collapsed .sidebar .side-foot{display:revert}
    body.collapsed .side-head{justify-content:flex-start;padding:0 14px}
    body.collapsed .side-toggle{margin-left:auto}
    body.collapsed .nav-item{justify-content:flex-start;padding:0 12px}
    .mobile-topbar{display:flex}
    .side-toggle{display:none}
    .wrap{padding:0 28px}
    .art-title{font-size:32px}
    .section,.cta-band,.site-foot{margin-top:64px}
  }
  @media (max-width:767px){
    body{font-size:16px;line-height:1.85}
    .wrap{padding:0 18px}
    .crumb{padding:20px 0 14px}
    .crumb .cur{max-width:100%;white-space:normal}
    .art-title{font-size:28px;margin:14px 0 14px}
    .art-meta{gap:10px;font-size:13.5px}
    .article-body{font-size:16.5px;padding-top:26px}
    .article-body h2{font-size:22px;margin:34px 0 14px}
    .article-body h3{font-size:17px}
    .pager{grid-template-columns:1fr}
    .pager-item.rt{text-align:left}
    .rel-grid{grid-template-columns:1fr}
    .sec-title{font-size:22px}
    .cta-band{padding:24px 20px;margin-top:56px}
    .cta-band .btn{width:100%}
    .foot-grid{grid-template-columns:1fr;gap:28px;padding:40px 0 24px}
    .site-foot{margin-top:56px}
  }
  @media (max-width:520px){
    .btn{width:100%}
    .mobile-topbar .btn{width:auto}
    .tag-row{gap:8px}
  }

/* roulang page: category1 */
:root{
    --brand:#1D5CD8;
    --brand-deep:#1749AE;
    --brand-soft:#E8F0FE;
    --accent:#FF7A45;
    --accent-deep:#E85F27;
    --accent-soft:#FFF1EA;
    --support:#0FAF9B;
    --support-soft:#E6F7F5;
    --bg:#F6F8FC;
    --card:#FFFFFF;
    --fill:#EEF3FB;
    --line:#E4EAF4;
    --ink:#101B2D;
    --ink-soft:#586A82;
    --ink-faint:#8496AC;
    --radius-card:16px;
    --radius-sm:12px;
    --radius-btn:10px;
    --radius-img:14px;
    --shadow-card:0 1px 2px rgba(16,27,45,.05), 0 10px 28px -14px rgba(16,27,45,.14);
    --shadow-lift:0 4px 10px rgba(16,27,45,.07), 0 20px 44px -18px rgba(29,92,216,.22);
    --sidebar-w:248px;
    --sidebar-mini:76px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Source Han Sans SC',system-ui,sans-serif;
    font-size:16.5px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}

  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px;}

  .wrap{width:100%;max-width:1180px;margin:0 auto;padding-left:40px;padding-right:40px;}

  /* ---------- 侧边导航 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
    background:#fff;border-right:1px solid var(--line);
    display:flex;flex-direction:column;z-index:70;
    transition:width .2s ease, transform .22s ease;
  }
  .side-head{
    height:72px;display:flex;align-items:center;gap:10px;
    padding:0 16px;border-bottom:1px solid var(--line);flex:none;
  }
  .brand{display:flex;align-items:center;gap:10px;min-width:0;flex:1;}
  .brand-mark{
    width:34px;height:34px;flex:none;border-radius:10px;
    background:linear-gradient(135deg,var(--brand),#3C7BEE);
    color:#fff;font-weight:700;font-size:17px;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 6px 16px -8px rgba(29,92,216,.9);
  }
  .brand-text{
    font-size:15.5px;font-weight:700;color:var(--ink);
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:.2px;
  }
  .icon-btn{
    width:36px;height:36px;flex:none;display:flex;align-items:center;justify-content:center;
    background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--ink-soft);
    cursor:pointer;transition:background .16s ease,color .16s ease,border-color .16s ease;
  }
  .icon-btn:hover{background:var(--fill);color:var(--ink);border-color:rgba(29,92,216,.35);}
  .icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

  .side-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;height:44px;
    padding:0 12px;border-radius:10px;color:var(--ink-soft);font-size:15px;
    transition:background .16s ease,color .16s ease;
  }
  .nav-item svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .nav-item:hover{background:var(--fill);color:var(--ink);}
  .nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
  .nav-item.active::before{
    content:'';position:absolute;left:-12px;top:10px;bottom:10px;width:3px;
    border-radius:0 3px 3px 0;background:var(--accent);
  }
  .nav-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

  .side-foot{padding:16px 16px 8px;border-top:1px solid var(--line);flex:none;}
  .side-note{font-size:12.5px;color:var(--ink-faint);line-height:1.7;margin-top:10px;}
  .side-copy{
    padding:12px 16px 18px;font-size:12px;color:var(--ink-faint);flex:none;line-height:1.7;
  }

  /* 折叠态 */
  body.mini .sidebar{width:var(--sidebar-mini);}
  body.mini .main-wrap{margin-left:var(--sidebar-mini);}
  body.mini .brand-text,
  body.mini .nav-label,
  body.mini .side-note,
  body.mini .side-copy{display:none;}
  body.mini .side-head{padding:0 20px;}
  body.mini .nav-item{justify-content:center;padding:0;gap:0;}
  body.mini .side-foot{padding:16px 12px 8px;}
  body.mini .btn-block{padding:0;width:40px;margin:0 auto;}
  body.mini .btn-block span{display:none;}
  body.mini .nav-item::after{
    content:attr(data-label);position:absolute;left:calc(100% + 12px);top:50%;
    transform:translateY(-50%) scale(.96);background:var(--ink);color:#fff;
    font-size:13px;line-height:1.2;padding:7px 11px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .16s ease,transform .16s ease;z-index:90;
  }
  body.mini .nav-item:hover::after{opacity:1;transform:translateY(-50%) scale(1);}

  /* ---------- 主内容 ---------- */
  .app{min-height:100vh;}
  .main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;transition:margin-left .2s ease;}
  .main{flex:1;}

  .mobile-topbar{display:none;}

  .scrim{
    position:fixed;inset:0;background:rgba(16,27,45,.45);z-index:65;
    opacity:0;pointer-events:none;transition:opacity .2s ease;
  }

  /* ---------- 通用组件 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
    cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
    white-space:nowrap;
  }
  .btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(29,92,216,.85);}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(29,92,216,.9);}
  .btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(16,27,45,.22);}
  .btn-ghost{background:#fff;color:var(--brand);border-color:rgba(29,92,216,.42);}
  .btn-ghost:hover{background:var(--fill);border-color:rgba(29,92,216,.6);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-sm{height:36px;padding:0 14px;font-size:14px;border-radius:9px;}
  .btn-block{width:100%;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
    border-radius:999px;font-size:12px;font-weight:600;line-height:1;letter-spacing:.2px;
  }
  .badge-brand{background:var(--brand-soft);color:var(--brand);}
  .badge-accent{background:var(--accent-soft);color:var(--accent-deep);}
  .badge-support{background:var(--support-soft);color:#0B8C7C;}

  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease;
  }
  .card:hover{box-shadow:var(--shadow-lift);border-color:rgba(29,92,216,.35);}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
    color:var(--brand);letter-spacing:.6px;
  }
  .eyebrow::before{content:'';width:18px;height:2px;border-radius:2px;background:var(--accent);}

  .sec{padding:96px 0;}
  .sec-tight{padding:64px 0;}
  .sec-head{margin-bottom:44px;max-width:760px;}
  .h2{font-size:30px;line-height:1.25;font-weight:700;letter-spacing:-.2px;}
  .sec-sub{margin-top:14px;color:var(--ink-soft);font-size:16px;line-height:1.9;}

  .link-more{color:var(--brand);font-size:14.5px;font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
  .link-more:hover{color:var(--brand-deep);}

  .crumb{font-size:13px;color:var(--ink-faint);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
  .crumb a{color:var(--ink-faint);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:#C3CFE0;}
  .crumb .cur{color:var(--ink-soft);font-weight:600;}

  /* ---------- Hero ---------- */
  .cat-hero{
    position:relative;overflow:hidden;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--line);
  }
  .cat-hero::before{
    content:'';position:absolute;inset:0;
    background:linear-gradient(105deg,rgba(255,255,255,.90) 0%,rgba(246,248,252,.85) 58%,rgba(238,243,251,.82) 100%);
  }
  .cat-hero .wrap{position:relative;z-index:1;padding-top:56px;padding-bottom:56px;}
  .hero-title{font-size:42px;line-height:1.25;font-weight:700;letter-spacing:-.6px;}
  .hero-title em{font-style:normal;color:var(--brand);}
  .hero-sub{margin-top:16px;font-size:17px;color:var(--ink-soft);max-width:640px;line-height:1.85;}
  .hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
  .hero-points{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px 26px;}
  .hero-point{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-soft);}
  .hero-point svg{width:16px;height:16px;fill:none;stroke:var(--support);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

  .factbar{
    display:grid;grid-template-columns:repeat(3,1fr);
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);overflow:hidden;
  }
  .fact{padding:22px 26px;border-right:1px solid var(--line);}
  .fact:last-child{border-right:0;}
  .fact-k{font-size:13px;color:var(--ink-faint);}
  .fact-v{margin-top:6px;font-size:16px;font-weight:600;color:var(--ink);}

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;}
  .tl-item{
    position:relative;display:grid;grid-template-columns:64px 1fr;gap:22px;padding-bottom:26px;
  }
  .tl-item::before{
    content:'';position:absolute;left:31px;top:66px;bottom:4px;
    border-left:2px dashed #D5E0F1;
  }
  .tl-item:last-child{padding-bottom:0;}
  .tl-item:last-child::before{display:none;}
  .tl-node{
    width:64px;height:64px;border-radius:16px;
    background:var(--accent-soft);border:1px solid rgba(255,122,69,.3);
    color:var(--accent-deep);font-weight:700;font-size:18px;
    display:flex;align-items:center;justify-content:center;letter-spacing:.5px;
    position:relative;z-index:1;
  }
  .tl-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:22px 24px;transition:box-shadow .2s ease,border-color .2s ease;}
  .tl-body:hover{box-shadow:var(--shadow-lift);border-color:rgba(29,92,216,.35);}
  .tl-body h3{font-size:19px;font-weight:700;line-height:1.4;}
  .tl-body p{margin-top:10px;color:var(--ink-soft);font-size:15px;line-height:1.9;}
  .tl-body .link-more{display:inline-block;margin-top:12px;}

  /* ---------- 清单 ---------- */
  .checklist{display:flex;flex-direction:column;gap:14px;margin-top:6px;}
  .check-item{
    display:flex;gap:14px;padding:16px 18px;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-sm);transition:border-color .18s ease,background .18s ease;
  }
  .check-item:hover{border-color:rgba(29,92,216,.35);background:#FBFDFF;}
  .check-dot{
    width:22px;height:22px;flex:none;border-radius:999px;background:var(--support-soft);
    color:#0B8C7C;display:flex;align-items:center;justify-content:center;margin-top:5px;
  }
  .check-dot svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;}
  .check-item h4{font-size:16px;font-weight:600;}
  .check-item p{margin-top:4px;font-size:14.5px;color:var(--ink-soft);line-height:1.85;}

  /* ---------- 图文对照 ---------- */
  .figure-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);overflow:hidden;}
  .figure-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
  .figure-card figcaption{padding:18px 22px;font-size:14px;color:var(--ink-soft);line-height:1.8;}

  .point-list{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
  .point{display:flex;gap:16px;align-items:flex-start;}
  .point-idx{
    width:36px;height:36px;flex:none;border-radius:11px;background:var(--brand-soft);
    color:var(--brand);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;
  }
  .point h4{font-size:17px;font-weight:600;}
  .point p{margin-top:5px;font-size:15px;color:var(--ink-soft);line-height:1.9;}

  /* ---------- FAQ ---------- */
  .acc{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);}
  .acc-item + .acc-item{border-top:1px solid var(--line);}
  .acc-head{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    min-height:64px;padding:14px 24px;background:none;border:0;text-align:left;
    font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;line-height:1.6;
    transition:background .18s ease,color .18s ease;
  }
  .acc-head:hover{background:#F8FAFF;color:var(--brand);}
  .acc-icon{
    width:24px;height:24px;flex:none;color:var(--brand);transition:transform .2s ease-out;
  }
  .acc-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;}
  .acc-item.open .acc-icon{transform:rotate(45deg);}
  .acc-item.open .acc-head{color:var(--brand);}
  .acc-panel{max-height:0;overflow:hidden;transition:max-height .2s ease-out;}
  .acc-panel-inner{padding:0 24px 22px;color:var(--ink-soft);font-size:15px;line-height:1.95;}
  .acc-panel-inner a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}

  /* ---------- CTA ---------- */
  .cta-card{
    background:rgba(29,92,216,.06);border:1px solid rgba(29,92,216,.22);
    border-radius:var(--radius-card);padding:34px 36px;
    display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  }
  .cta-card h2{font-size:24px;font-weight:700;line-height:1.4;}
  .cta-card p{margin-top:8px;color:var(--ink-soft);font-size:15px;max-width:620px;}

  .tipbar{
    display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
    padding:18px 24px;font-size:14.5px;color:var(--ink-soft);
  }
  .tipbar strong{color:var(--ink);font-weight:600;}

  /* ---------- 页脚 ---------- */
  .site-foot{background:#0F1B2D;color:#C9D5E6;padding:64px 0 26px;margin-top:auto;}
  .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:44px;}
  .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .foot-mark{
    width:32px;height:32px;border-radius:10px;flex:none;
    background:linear-gradient(135deg,#2E6BE6,#5590F5);color:#fff;font-weight:700;font-size:16px;
    display:flex;align-items:center;justify-content:center;
  }
  .foot-brand strong{color:#fff;font-size:16px;font-weight:700;letter-spacing:.2px;}
  .site-foot p{font-size:14px;line-height:1.9;color:#A9BDD8;}
  .site-foot h3{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
  .foot-links{display:flex;flex-direction:column;gap:11px;}
  .foot-links a{font-size:14px;color:#A9BDD8;transition:color .16s ease;}
  .foot-links a:hover{color:#fff;}
  .foot-bottom{
    margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#7F94B0;
  }
  .to-top{
    background:transparent;border:1px solid rgba(255,255,255,.22);color:#C9D5E6;
    height:34px;padding:0 16px;border-radius:9px;font-size:13px;cursor:pointer;
    transition:background .16s ease,color .16s ease,border-color .16s ease;
  }
  .to-top:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.4);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023.98px){
    .sidebar{transform:translateX(-100%);width:280px;box-shadow:0 20px 60px -20px rgba(16,27,45,.4);}
    body.mini .sidebar{width:280px;}
    body.mini .main-wrap{margin-left:0;}
    body.mini .brand-text,
    body.mini .nav-label,
    body.mini .side-note,
    body.mini .side-copy{display:block;}
    body.mini .side-head{padding:0 16px;}
    body.mini .nav-item{justify-content:flex-start;padding:0 12px;gap:12px;}
    body.mini .nav-item::after{display:none;}
    body.mini .side-foot{padding:16px 16px 8px;}
    body.mini .btn-block{padding:0 22px;width:100%;margin:0;}
    body.mini .btn-block span{display:inline;}
    body.drawer-open .sidebar{transform:translateX(0);}
    body.drawer-open .scrim{opacity:1;pointer-events:auto;}
    .main-wrap{margin-left:0;padding-top:56px;}
    .mobile-topbar{
      display:flex;position:fixed;top:0;left:0;right:0;height:56px;z-index:60;
      align-items:center;justify-content:space-between;gap:12px;
      padding:0 16px;background:#fff;border-bottom:1px solid var(--line);
    }
    .side-toggle{display:none;}
    .sec{padding:64px 0;}
    .sec-tight{padding:52px 0;}
    .wrap{padding-left:28px;padding-right:28px;}
    .hero-title{font-size:32px;}
    .h2{font-size:24px;}
    .factbar{grid-template-columns:1fr;}
    .fact{border-right:0;border-bottom:1px solid var(--line);}
    .fact:last-child{border-bottom:0;}
    .foot-grid{grid-template-columns:1fr 1fr;gap:34px;}
  }
  @media (max-width:639.98px){
    body{font-size:16px;}
    .wrap{padding-left:18px;padding-right:18px;}
    .sec{padding:56px 0;}
    .sec-tight{padding:46px 0;}
    .hero-title{font-size:28px;}
    .hero-sub{font-size:15.5px;}
    .hero-actions .btn{flex:1 1 100%;min-height:44px;}
    .h2{font-size:22px;}
    .tl-item{grid-template-columns:52px 1fr;gap:16px;}
    .tl-node{width:52px;height:52px;border-radius:13px;font-size:16px;}
    .tl-item::before{left:25px;top:54px;}
    .tl-body{padding:18px;}
    .tl-body h3{font-size:17px;}
    .cta-card{padding:24px 20px;}
    .cta-card h2{font-size:20px;}
    .cta-card .btn{width:100%;}
    .acc-head{padding:14px 18px;font-size:15.5px;}
    .acc-panel-inner{padding:0 18px 20px;}
    .foot-grid{grid-template-columns:1fr;}
    .foot-bottom{flex-direction:column;align-items:flex-start;}
  }

/* roulang page: category2 */
:root{
  --brand:#1D5CD8; --brand-dark:#1749AE; --brand-soft:#E8F0FE;
  --accent:#FF7A45; --accent-soft:#FFEFE8;
  --support:#0FAF9B; --support-soft:#E4F7F4;
  --ink:#101B2D; --sub:#586A82; --faint:#8496AC;
  --line:#E4EAF4; --page:#F6F8FC; --card:#FFFFFF; --soft:#EEF3FB;
  --r-card:16px; --r-sm:12px; --r-btn:10px;
  --shadow-card:0 1px 2px rgba(16,27,45,.05), 0 10px 28px -14px rgba(16,27,45,.14);
  --shadow-lift:0 4px 10px rgba(16,27,45,.07), 0 20px 44px -18px rgba(29,92,216,.22);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  --side:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
.page-body{
  margin:0;
  background:var(--page);
  color:var(--ink);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:100}
.skip-link:focus{left:0}

/* 布局骨架 */
.shell{min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:0 14px 20px;z-index:50;
  transition:width .2s ease-out,transform .22s ease-out;
}
.side-head{height:72px;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 6px;flex:none}
.side-brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:17px;flex:none;
}
.brand-name{font-size:14px;font-weight:700;white-space:nowrap;color:var(--ink);letter-spacing:.2px}
.icon-btn{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;color:var(--sub);flex:none;
  transition:background .16s ease-out,color .16s ease-out,border-color .16s ease-out;
}
.icon-btn:hover{background:var(--soft);color:var(--ink);border-color:rgba(29,92,216,.35)}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.collapse-btn svg{transition:transform .2s ease-out}
.side-nav{margin-top:6px;display:grid;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;
  border-radius:10px;color:var(--sub);font-size:15px;
  transition:background .16s ease-out,color .16s ease-out;
}
.side-link .ico{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.side-link:hover{background:var(--soft);color:var(--ink)}
.side-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--accent);
}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:10px}
.side-cta{width:100%}
.side-note{font-size:12.5px;color:var(--faint);text-align:center;line-height:1.6}

.main-wrap{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column;transition:margin-left .2s ease-out}
.main-wrap>main{flex:1}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 40px}
.mobile-topbar{display:none}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,27,45,.45);z-index:45;
  opacity:0;visibility:hidden;transition:opacity .2s ease-out;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}

/* 折叠态 */
body.mini .sidebar{width:76px;padding:0 12px 20px}
body.mini .main-wrap{margin-left:76px}
body.mini .brand-name{display:none}
body.mini .side-head{flex-direction:column;height:auto;padding:14px 0 10px;gap:8px}
body.mini .collapse-btn svg{transform:rotate(180deg)}
body.mini .side-link{justify-content:center;padding:0}
body.mini .side-link>span{display:none}
body.mini .side-cta{font-size:12px;padding:0}
body.mini .side-note{display:none}
body.mini .side-link::after{
  content:attr(data-label);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
  background:var(--ink);color:#fff;font-size:13px;line-height:1;padding:8px 10px;border-radius:8px;
  white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .16s ease-out;z-index:80;
}
body.mini .side-link:hover::after{opacity:1}

/* 首屏紧凑条 */
.hero-strip{background:linear-gradient(180deg,#FFFFFF 0%,#F1F6FF 100%);border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);padding-top:22px}
.crumb a{color:var(--faint);transition:color .16s ease-out}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.crumb span{color:#B9C6D8}
.crumb strong{color:var(--ink);font-weight:600}
.hero-flex{display:flex;align-items:center;justify-content:space-between;gap:40px;min-height:200px;padding:26px 0 40px}
.hero-copy{max-width:720px}
.hero-copy h1{font-size:42px;line-height:1.25;letter-spacing:.2px;margin-top:14px}
.hero-sub{margin-top:14px;color:var(--sub);font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-card{
  display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 24px;box-shadow:var(--shadow-card);min-width:250px;flex:none;
}
.hero-card-num{font-size:40px;font-weight:700;color:var(--brand);line-height:1;font-family:Inter,system-ui,sans-serif}
.hero-card-txt{font-size:14px;color:var(--sub);line-height:1.7}

/* 板块 */
.section{padding-top:64px}
.section-lg{padding-top:96px}
.sec-head{max-width:780px;margin-bottom:30px}
.sec-head h2{font-size:30px;line-height:1.3;margin-top:12px}
.sec-head p{margin-top:12px;color:var(--sub);font-size:16px}

/* 等级速览条 */
.strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.strip li{padding:22px 24px;border-left:1px solid var(--line)}
.strip li:first-child{border-left:0}
.strip-tag{display:inline-block;font-size:14.5px;font-weight:700;color:var(--brand)}
.strip p{margin-top:8px;font-size:14.5px;color:var(--sub);line-height:1.8}

/* 权益矩阵 */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--shadow-card)}
.matrix{width:100%;min-width:900px;border-collapse:separate;border-spacing:0;font-size:14px}
.matrix th,.matrix td{padding:16px 18px;text-align:left;vertical-align:middle;border-bottom:1px solid var(--line)}
.matrix thead th{position:sticky;top:0;z-index:2;background:#fff;color:var(--ink);font-weight:600;font-size:14px;white-space:nowrap}
.matrix tbody th{font-weight:600;color:var(--ink);white-space:nowrap;background:#fff}
.matrix tbody td{color:var(--sub);line-height:1.7}
.matrix tbody tr:nth-child(even) th,.matrix tbody tr:nth-child(even) td{background:#FAFCFF}
.matrix tbody tr:last-child th,.matrix tbody tr:last-child td{border-bottom:0}
.matrix .col-reco{background:var(--brand-soft)}
.matrix tbody tr:nth-child(even) .col-reco{background:#DCE9FE}
.matrix thead .col-reco{background:var(--brand-soft)}
.col-head{display:flex;align-items:center;gap:8px}
.table-note{margin-top:14px;font-size:14px;color:var(--faint);line-height:1.85}
.scroll-hint{display:none;margin-top:10px;font-size:13px;color:var(--faint)}

/* 等级说明卡 */
.tier-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.tier-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.tier-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);border-color:rgba(29,92,216,.35)}
.tier-grid>.tier-card:nth-child(even){margin-top:28px}
.tier-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.tier-media img{width:100%;height:100%;object-fit:cover}
.tier-body{padding:22px 24px 26px}
.tier-name{font-size:20px;line-height:1.35}
.tier-list{margin-top:14px;display:grid;gap:8px}
.tier-list li{position:relative;padding-left:18px;font-size:15.5px;color:var(--sub);line-height:1.8}
.tier-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:3px;background:var(--support)}
.tier-valid{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:14px;color:var(--faint);line-height:1.8}

/* 升级路径 7/5 */
.split{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.step-list{display:grid}
.step{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:22px 0;border-top:1px solid var(--line)}
.step:first-child{border-top:0;padding-top:4px}
.step-num{font-family:Inter,system-ui,sans-serif;font-size:20px;font-weight:700;color:var(--accent);line-height:1.5}
.step h3{font-size:18px;line-height:1.5}
.step p{margin-top:8px;color:var(--sub);font-size:15.5px;line-height:1.85}
.side-card{
  position:sticky;top:24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:17px;line-height:1.5}
.fact-list{margin-top:16px;display:grid;gap:0}
.fact-list li{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.fact-list li:last-child{border-bottom:0}
.fact-list span{color:var(--faint);flex:none}
.fact-list strong{font-weight:600;color:var(--ink);text-align:right}
.side-tip{margin-top:14px;font-size:13.5px;color:var(--faint);line-height:1.8}

/* FAQ */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card)}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 22px;background:none;border:0;text-align:left;
  font-size:16px;color:var(--ink);cursor:pointer;line-height:1.7;
  transition:background .16s ease-out;
}
.faq-q:hover{background:#F8FAFF}
.faq-icon{
  width:28px;height:28px;border-radius:50%;background:var(--soft);color:var(--brand);
  display:grid;place-items:center;flex:none;transition:transform .2s ease-out,background .2s ease-out;
}
.faq-icon svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--support-soft);color:#0A8375}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-item.open .faq-a{max-height:340px}
.faq-a-inner{padding:0 22px 22px;color:var(--sub);font-size:15.5px;line-height:1.9}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border:1px solid rgba(29,92,216,.18);
  border-radius:var(--r-card);background:rgba(29,92,216,.06);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.09;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:32px 36px}
.cta-inner h2{font-size:24px;line-height:1.4}
.cta-inner p{margin-top:10px;color:var(--sub);font-size:15.5px;max-width:640px}
.cta-actions{display:flex;gap:12px;flex:none}

/* 页脚 */
.site-foot{background:#0F1B2D;color:#C9D5E6;margin-top:96px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding:56px 0 32px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px}
.foot-mark{width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px;flex:none}
.site-foot h3{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.site-foot p{font-size:14.5px;color:#9FB0C6;line-height:1.9;margin-top:14px;max-width:330px}
.foot-links li{margin-bottom:10px}
.foot-links a{font-size:14.5px;color:#C9D5E6;transition:color .16s ease-out}
.foot-links a:hover{color:#fff}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;font-size:13px;color:#8FA1B8;
}
.to-top{
  height:36px;padding:0 16px;border-radius:10px;border:1px solid rgba(255,255,255,.25);
  background:transparent;color:#C9D5E6;font-size:13px;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out;
}
.to-top:hover{background:rgba(255,255,255,.1);color:#fff}

/* 响应式 */
@media (max-width:1023px){
  .sidebar{
    transform:translateX(-100%);width:280px;padding:0 16px 24px;
    box-shadow:0 20px 60px rgba(16,27,45,.25);overflow-y:auto;
  }
  body.mini .sidebar{width:280px;padding:0 16px 24px}
  body.drawer-open .sidebar{transform:none}
  body.mini .brand-name{display:inline}
  body.mini .side-head{flex-direction:row;height:72px;padding:0 6px;gap:8px}
  body.mini .collapse-btn svg{transform:none}
  body.mini .side-link{justify-content:flex-start;padding:0 14px}
  body.mini .side-link>span{display:inline}
  body.mini .side-cta{font-size:15px;padding:0 20px}
  body.mini .side-note{display:block}
  body.mini .side-link::after{display:none}
  .collapse-btn{display:none}
  .main-wrap,body.mini .main-wrap{margin-left:0}
  .mobile-topbar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    height:56px;padding:0 18px;background:#fff;border-bottom:1px solid var(--line);
    position:sticky;top:0;z-index:40;
  }
  .brand-text{font-size:14px;font-weight:700}
  .wrap{padding:0 28px}
  .hero-copy h1{font-size:34px}
  .split{grid-template-columns:1fr;gap:28px}
  .side-card{position:static}
  .tier-grid{grid-template-columns:1fr}
  .tier-grid>.tier-card:nth-child(even){margin-top:0}
  .scroll-hint{display:block}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  .page-body{font-size:16px}
  .wrap{padding:0 18px}
  .hero-flex{flex-direction:column;align-items:flex-start;gap:24px;padding:20px 0 34px}
  .hero-copy h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-card{min-width:0;width:100%}
  .hero-actions{width:100%;margin-top:22px}
  .hero-actions .btn{width:100%}
  .hero-actions .btn-ghost{display:none}
  .sec-head h2{font-size:22px}
  .sec-head p{font-size:15.5px}
  .section{padding-top:56px}
  .section-lg{padding-top:56px}
  .strip{grid-template-columns:1fr}
  .strip li{border-left:0;border-top:1px solid var(--line)}
  .strip li:first-child{border-top:0}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .faq-q{font-size:15.5px;padding:14px 18px}
  .faq-a-inner{padding:0 18px 20px}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 24px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .site-foot{margin-top:64px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

@layer components {
  .btn {
    @apply inline-flex items-center justify-center gap-2 h-11 px-5 rounded-[10px] text-[15px] font-semibold whitespace-nowrap cursor-pointer border border-transparent;
    transition: background-color .18s ease-out, color .18s ease-out, box-shadow .18s ease-out, transform .18s ease-out, border-color .18s ease-out;
  }
  .btn-primary { @apply bg-brand text-white; }
  .btn-primary:hover { @apply bg-brand-dark -translate-y-px; box-shadow: var(--shadow-lift); }
  .btn-primary:active { @apply translate-y-0; box-shadow: inset 0 2px 6px rgba(0,0,0,.18); }
  .btn-ghost { @apply bg-white text-brand border-brand/45; }
  .btn-ghost:hover { @apply bg-brand-soft border-brand/70; }
  .btn-ghost:active { @apply translate-y-0; }
  .btn-sm { @apply h-9 px-4 text-sm; }
  .badge { @apply inline-flex items-center h-6 px-2.5 rounded-full text-xs font-semibold; }
  .badge-brand { @apply bg-brand-soft text-brand; }
  .badge-accent { @apply bg-accent-soft text-[#C24A18]; }
  .badge-support { @apply bg-support-soft text-[#0A8375]; }
}

/* roulang page: category3 */
:root{
  --brand:#1D5CD8;
  --brand-dark:#1749AD;
  --brand-soft:#E8F0FE;
  --accent:#FF7A45;
  --support:#0FAF9B;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --fill:#EEF3FB;
  --line:#E4EAF4;
  --text:#101B2D;
  --text-2:#586A82;
  --text-3:#8496AC;
  --r-card:16px;
  --r-sub:12px;
  --r-btn:10px;
  --r-img:14px;
  --sh-card:0 1px 2px rgba(16,27,45,.05), 0 10px 28px -14px rgba(16,27,45,.14);
  --sh-hover:0 4px 10px rgba(16,27,45,.07), 0 20px 44px -18px rgba(29,92,216,.22);
  --side-w:248px;
  --side-mini:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Source Han Sans SC',system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 40px}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
  transition:width .2s ease,transform .24s ease;
}
.side-head{
  height:72px;flex:0 0 72px;display:flex;align-items:center;gap:10px;
  padding:0 16px 0 18px;border-bottom:1px solid var(--line);
}
.brand-mark,.foot-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#3E7BEE);
  color:#fff;font-weight:700;font-size:17px;
  display:grid;place-items:center;
}
.brand-text{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.collapse-btn{
  margin-left:auto;width:32px;height:32px;flex:0 0 32px;border:1px solid var(--line);
  background:#fff;border-radius:9px;display:grid;place-items:center;cursor:pointer;
  color:var(--text-2);transition:background .18s,border-color .18s,transform .2s;
}
.collapse-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.collapse-btn:hover{background:var(--fill);border-color:rgba(29,92,216,.35);color:var(--brand)}
.side-nav{padding:14px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto}
.nav-item{
  display:flex;align-items:center;gap:11px;height:44px;padding:0 12px;
  border-radius:10px;color:var(--text-2);font-size:15px;position:relative;
  transition:background .18s,color .18s;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:var(--fill);color:var(--text)}
.nav-item.is-active{
  background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--accent);
}
.side-foot{padding:14px 16px 18px;border-top:1px solid var(--line)}
.side-note{margin-top:12px;font-size:12.5px;line-height:1.75;color:var(--text-3)}

body.mini .sidebar{width:var(--side-mini)}
body.mini .brand-text{display:none}
body.mini .side-head{justify-content:center;padding:0 8px;gap:0}
body.mini .side-head .brand-mark{display:none}
body.mini .collapse-btn{margin-left:0;transform:rotate(180deg)}
body.mini .side-nav{padding:14px 10px}
body.mini .nav-item{justify-content:center;padding:0}
body.mini .nav-item .label{
  position:absolute;left:58px;top:50%;transform:translate(-6px,-50%);
  background:#101B2D;color:#fff;font-size:12.5px;font-weight:500;
  padding:6px 10px;border-radius:8px;white-space:nowrap;opacity:0;pointer-events:none;
  transition:opacity .16s,transform .16s;z-index:80;
}
body.mini .nav-item:hover .label{opacity:1;transform:translate(0,-50%)}
body.mini .side-foot{display:none}

/* ---------- 主内容区 ---------- */
.main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;transition:margin-left .2s ease}
body.mini .main{margin-left:var(--side-mini)}
.mobile-topbar{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s,color .18s,box-shadow .18s,transform .18s,border-color .18s;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(29,92,216,.7)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(29,92,216,.75)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18)}
.btn-ghost{background:#fff;border-color:rgba(29,92,216,.35);color:var(--brand)}
.btn-ghost:hover{background:var(--fill)}
.btn-ghost:active{background:var(--brand-soft)}
.btn-sm{min-height:36px;padding:0 14px;font-size:13.5px;border-radius:9px}
.btn-block{width:100%}
.link-more{color:var(--brand);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-dark);
}
.badge-accent{background:rgba(255,122,69,.14);color:#C4471A}
.badge-support{background:rgba(15,175,155,.14);color:#0A7C6F}
.tag{
  display:inline-block;font-size:12px;color:var(--text-2);background:var(--fill);
  border-radius:999px;padding:3px 10px;
}

/* ---------- Hero ---------- */
.hero{position:relative;height:420px;overflow:hidden;background:var(--fill)}
.hero-media{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,248,252,.42) 0%,rgba(246,248,252,.12) 42%,rgba(246,248,252,.88) 100%);
}
.hero-inner{position:relative;padding-top:26px}
.crumb{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#41577A;
  background:rgba(255,255,255,.88);border:1px solid var(--line);
  padding:6px 13px;border-radius:999px;backdrop-filter:blur(4px);
}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.crumb .cur{font-weight:700;color:var(--text)}
.hero-card-wrap{position:relative;z-index:4;margin-top:-92px}
.hero-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:34px 38px 36px;max-width:740px;
}
.hero-card h1{font-size:38px;margin-top:16px;letter-spacing:.4px}
.hero-card h1 em{font-style:normal;color:var(--brand)}
.hero-card p.lead{margin-top:14px;font-size:16.5px;color:var(--text-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* ---------- 板块 ---------- */
.sec{padding:96px 0}
.sec-tight{padding:64px 0}
.sec-fill{background:var(--fill)}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{font-size:30px;margin-top:14px}
.sec-head p{margin-top:12px;color:var(--text-2)}
section[id]{scroll-margin-top:84px}

/* ---------- 图文交错 ---------- */
.split{
  display:grid;gap:44px;align-items:center;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
}
.split + .split{margin-top:72px}
.split--flip{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.split--flip .split-media{order:2}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-card);
}
.split-body .step-no{
  font-size:13px;font-weight:700;letter-spacing:1px;color:var(--accent);
}
.split-body h3{font-size:22px;margin-top:10px}
.split-body p{margin-top:14px;color:var(--text-2)}
.dots{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.dots li{position:relative;padding-left:18px;color:var(--text-2);font-size:15px;line-height:1.8}
.dots li::before{
  content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--support);
}
.stats{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:24px;
  padding-top:22px;border-top:1px dashed var(--line);
}
.stat b{display:block;font-size:24px;font-weight:800;color:var(--accent);line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}

/* ---------- 横向卡带 ---------- */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.rail-head h2{font-size:28px;margin-top:14px}
.rail-head p{margin-top:10px;color:var(--text-2);max-width:560px}
.rail-ctrl{display:flex;gap:10px}
.rail-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;color:var(--text-2);
  transition:background .18s,border-color .18s,color .18s;
}
.rail-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rail-btn:hover{background:var(--brand-soft);border-color:rgba(29,92,216,.35);color:var(--brand)}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 260px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);padding:14px 14px 20px;
  transition:box-shadow .2s,transform .2s,border-color .2s;
}
.rail-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:rgba(29,92,216,.35)}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sub)}
.rail-card .tag{margin-top:14px}
.rail-card h3{font-size:17px;margin-top:10px}
.rail-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden;box-shadow:var(--sh-card)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:18px 24px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);transition:background .18s,color .18s;
}
.faq-q:hover{background:#F8FAFF;color:var(--brand)}
.faq-q .ico{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .2s ease-out;
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;background:var(--text-3);border-radius:2px;
}
.faq-q .ico::before{left:3px;right:3px;top:10px;height:2px}
.faq-q .ico::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-item.open .faq-q{color:var(--brand);background:#F8FAFF}
.faq-item.open .faq-q .ico{transform:rotate(45deg)}
.faq-item.open .faq-q .ico::before,.faq-item.open .faq-q .ico::after{background:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-item.open .faq-a{max-height:320px}
.faq-a p{padding:0 24px 22px;color:var(--text-2);font-size:15.5px;line-height:1.9}

/* ---------- 联系 / CTA ---------- */
.contact-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:rgba(29,92,216,.06);border:1px solid rgba(29,92,216,.18);
  border-radius:var(--r-card);padding:32px 34px;
}
.contact-band h2{font-size:24px}
.contact-band p{margin-top:10px;color:var(--text-2);max-width:560px}
.contact-actions{display:flex;gap:14px;flex-wrap:wrap}
.fineprint{margin-top:18px;font-size:13.5px;color:var(--text-3);line-height:1.85}
.fact-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
}
.fact-row div b{display:block;font-size:15px;color:var(--text)}
.fact-row div span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-foot{background:#0F1B2D;color:#C9D5E6;margin-top:auto}
.site-foot .wrap{padding-top:64px;padding-bottom:26px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand strong{font-size:15.5px;color:#fff;letter-spacing:.3px}
.site-foot p{font-size:14px;line-height:1.9;color:#A9B8CC}
.site-foot h3{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.4px}
.foot-links li + li{margin-top:11px}
.foot-links a{font-size:14px;color:#C9D5E6;transition:color .18s}
.foot-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:#8FA1B9;
}
.to-top{
  min-height:38px;padding:0 16px;border-radius:9px;cursor:pointer;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#C9D5E6;
  font-size:13px;transition:background .18s,color .18s;
}
.to-top:hover{background:rgba(255,255,255,.16);color:#fff}

/* ---------- 抽屉遮罩 ---------- */
.scrim{
  position:fixed;inset:0;background:rgba(16,27,45,.45);opacity:0;pointer-events:none;
  transition:opacity .22s;z-index:55;
}
.scrim.is-open{opacity:1;pointer-events:auto}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .wrap{padding:0 28px}
  .sidebar{transform:translateX(-100%);width:280px;box-shadow:0 20px 60px -20px rgba(16,27,45,.4)}
  .sidebar.is-open{transform:none}
  .main{margin-left:0;padding-top:56px}
  body.mini .main{margin-left:0}
  .mobile-topbar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 16px;
    background:#fff;border-bottom:1px solid var(--line);z-index:50;
  }
  .icon-btn{
    width:40px;height:40px;flex:0 0 40px;border:1px solid var(--line);background:#fff;
    border-radius:10px;display:grid;place-items:center;cursor:pointer;color:var(--text-2);
  }
  .icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
  .hero{height:340px}
  .hero-card-wrap{margin-top:-70px}
  .hero-card{padding:26px 26px 28px}
  .hero-card h1{font-size:28px}
  .sec{padding:64px 0}
  .sec-tight{padding:48px 0}
  .split,.split--flip{grid-template-columns:1fr;gap:26px}
  .split--flip .split-media{order:0}
  .split + .split{margin-top:52px}
  .sec-head h2{font-size:24px}
  .rail-head h2{font-size:22px}
  .fact-row{grid-template-columns:1fr;gap:18px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.85}
  .wrap{padding:0 18px}
  .hero{height:280px}
  .hero-card-wrap{margin-top:-56px}
  .hero-card{padding:22px 20px 24px}
  .hero-card h1{font-size:23px}
  .hero-card p.lead{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .sec{padding:56px 0}
  .sec-tight{padding:44px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2{font-size:22px}
  .split-body h3{font-size:19px}
  .stats{gap:20px}
  .stat b{font-size:21px}
  .rail-card{flex:0 0 232px}
  .rail-btn{display:none}
  .faq-q{font-size:15.5px;padding:16px 18px}
  .faq-a p{padding:0 18px 20px;font-size:15px}
  .contact-band{padding:24px 20px}
  .contact-band h2{font-size:20px}
  .contact-actions{width:100%}
  .contact-actions .btn{flex:1 1 100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
    --brand:#1D5CD8;
    --brand-deep:#1a53c2;
    --accent:#FF7A45;
    --accent-deep:#D0491A;
    --support:#0FAF9B;
    --support-deep:#0B7F72;
    --bg:#F6F8FC;
    --card:#FFFFFF;
    --fill:#EEF3FB;
    --line:#E4EAF4;
    --ink:#101B2D;
    --ink-2:#586A82;
    --ink-3:#8496AC;
    --radius-card:16px;
    --radius-inner:12px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(16,27,45,.05),0 10px 28px -14px rgba(16,27,45,.14);
    --shadow-hover:0 4px 10px rgba(16,27,45,.07),0 20px 44px -18px rgba(29,92,216,.22);
    --sidebar-w:248px;
    --topbar-h:56px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{margin:0;padding:0;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
    font-size:16.5px;line-height:1.9;color:var(--ink);background:var(--bg);
    -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  }
  h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
  p{margin:0}
  ul,ol,dl{margin:0;padding:0;list-style:none}
  dd{margin:0}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 40px}
  .section{padding:96px 0}
  .section-tight{padding:64px 0}
  .section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

  /* ---------- 左侧导航 App Shell ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
    background:#fff;border-right:1px solid var(--line);
    display:flex;flex-direction:column;z-index:70;
    transition:width .2s ease,transform .24s ease;
  }
  .side-logo{
    height:72px;flex:none;display:flex;align-items:center;gap:10px;
    padding:0 20px;border-bottom:1px solid var(--line);
  }
  .brand-mark,.foot-mark{
    width:34px;height:34px;flex:none;border-radius:10px;background:var(--brand);color:#fff;
    display:inline-flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
  }
  .brand-text{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .side-nav{padding:14px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1 1 auto}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
    border-radius:10px;font-size:15px;color:var(--ink-2);
    transition:background .18s ease,color .18s ease;
  }
  .nav-item svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .nav-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .nav-item:hover{background:var(--fill);color:var(--ink)}
  .nav-item.active{background:#E8F0FE;color:var(--brand);font-weight:600}
  .nav-item.active::before{
    content:"";position:absolute;left:-12px;top:9px;bottom:9px;width:3px;
    border-radius:0 3px 3px 0;background:var(--accent);
  }
  .side-cta{padding:14px 12px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;flex:none}
  .side-note{font-size:12.5px;color:var(--ink-3);line-height:1.7;padding:0 4px}
  .side-foot{padding:0 12px 14px;flex:none}
  .collapse-btn{
    width:100%;height:40px;display:flex;align-items:center;gap:10px;justify-content:flex-start;
    padding:0 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);
    font-size:14px;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease;
  }
  .collapse-btn svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .collapse-btn:hover{background:var(--fill);color:var(--ink);border-color:rgba(29,92,216,.35)}

  body.mini .sidebar{width:76px}
  body.mini .main{margin-left:76px}
  body.mini .brand-text,
  body.mini .nav-item span,
  body.mini .btn-label,
  body.mini .collapse-btn span,
  body.mini .side-note,
  body.mini .side-copy{display:none}
  body.mini .side-logo{justify-content:center;padding:0}
  body.mini .nav-item{justify-content:center;padding:0}
  body.mini .nav-item.active::before{left:-10px}
  body.mini .side-cta{padding:12px 10px}
  body.mini .side-cta .btn{padding:0;width:44px;height:44px}
  body.mini .collapse-btn{justify-content:center;padding:0}

  /* ---------- 移动端顶部栏 ---------- */
  .mobile-topbar{
    position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:60;
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:0 14px;background:rgba(255,255,255,.97);
    border-bottom:1px solid var(--line);
  }
  .icon-btn{
    width:40px;height:40px;flex:none;border-radius:10px;border:1px solid var(--line);background:#fff;
    display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background .18s ease;
  }
  .icon-btn:hover{background:var(--fill)}
  .icon-btn svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .scrim{
    position:fixed;inset:0;background:rgba(16,27,45,.45);z-index:65;
    opacity:0;pointer-events:none;transition:opacity .2s ease;
  }
  body.drawer-open .scrim{opacity:1;pointer-events:auto}

  .main{min-height:100vh;background:var(--bg)}

  /* ---------- 页面头部 ---------- */
  .page-head{
    padding:36px 0 52px;
    border-bottom:1px solid var(--line);
    background:
      linear-gradient(180deg,rgba(246,248,252,.95),rgba(238,243,251,.93)),
      url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  }
  .crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px;flex-wrap:wrap}
  .crumbs a{color:var(--ink-2);transition:color .16s ease}
  .crumbs a:hover{color:var(--brand)}
  .crumbs .current{color:var(--ink);font-weight:600}
  .head-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:48px;align-items:end}
  .head-grid h1{font-size:42px;margin:14px 0 16px}
  .head-grid h1 .hl{color:var(--brand)}
  .lead{font-size:16.5px;color:var(--ink-2);max-width:52ch;line-height:1.9}
  .quick-jump{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:8px;
  }
  .quick-jump .qj-title{
    font-size:13px;font-weight:600;color:var(--ink-3);padding:12px 14px 8px;letter-spacing:.04em;
  }
  .quick-jump a{
    display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:52px;
    padding:0 14px;border-radius:var(--radius-inner);font-size:15px;color:var(--ink-2);
    transition:background .16s ease,color .16s ease;
  }
  .quick-jump a:hover{background:#F8FAFF;color:var(--brand)}
  .quick-jump a span.arrow{color:var(--ink-3);transition:transform .16s ease,color .16s ease}
  .quick-jump a:hover span.arrow{transform:translateX(3px);color:var(--brand)}

  /* ---------- 通用组件 ---------- */
  .eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.08em;margin-bottom:10px}
  .badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap}
  .badge-brand{background:#E8F0FE;color:var(--brand)}
  .badge-accent{background:#FFF0E9;color:var(--accent-deep)}
  .badge-support{background:#E4F7F4;color:var(--support-deep)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
    transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  }
  .btn svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(29,92,216,.75)}
  .btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 5px rgba(0,0,0,.16)}
  .btn-ghost{background:#fff;color:var(--brand);border-color:rgba(29,92,216,.42)}
  .btn-ghost:hover{background:var(--fill);border-color:rgba(29,92,216,.6)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{min-height:38px;padding:0 14px;font-size:14px}
  .text-link{color:var(--brand);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
  .text-link:hover{text-decoration-thickness:2px}

  .sec-head{max-width:760px;margin-bottom:40px}
  .sec-head h2{font-size:30px;margin-bottom:14px}
  .sec-head p{color:var(--ink-2)}
  .sec-head-wide{max-width:none}

  /* ---------- 自查图文带 ---------- */
  .split-5-7{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center}
  .media-frame{
    border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
    box-shadow:var(--shadow-card);background:#fff;
  }
  .media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
  .check-list{display:flex;flex-direction:column;gap:4px;margin-top:24px}
  .check-item{
    display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed var(--line);
  }
  .check-item:last-child{border-bottom:0}
  .check-num{
    width:30px;height:30px;flex:none;border-radius:9px;background:var(--fill);color:var(--brand);
    display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  }
  .check-item h3{font-size:17px;margin-bottom:6px}
  .check-item p{font-size:15px;color:var(--ink-2);line-height:1.85}

  /* ---------- FAQ ---------- */
  .faq-columns{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
  .group-title{font-size:20px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
  .group-title::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--brand)}
  .faq-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:0 22px;overflow:hidden;
  }
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
    gap:16px;min-height:64px;padding:19px 0;font-size:16px;font-weight:600;color:var(--ink);
    transition:color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand)}
  .faq-sign{
    flex:none;width:24px;height:24px;border-radius:8px;border:1px solid var(--line);
    display:inline-flex;align-items:center;justify-content:center;
    font-size:16px;line-height:1;color:var(--ink-2);font-weight:500;
    transition:transform .2s ease,color .2s ease,border-color .2s ease,background .2s ease;
  }
  .faq-item[open] .faq-sign{transform:rotate(45deg);color:var(--brand);border-color:rgba(29,92,216,.45);background:#E8F0FE}
  .faq-item[open] summary{color:var(--brand)}
  .faq-answer{padding:0 0 20px;color:var(--ink-2);font-size:15.5px;line-height:1.9;max-width:60ch;animation:fadeUp .2s ease-out both}
  @keyframes fadeUp{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:translateY(0)}}

  /* ---------- 信息卡 ---------- */
  .info-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
  .info-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:26px 24px;
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .info-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(29,92,216,.35)}
  .info-card h3{font-size:18px;margin-bottom:6px}
  .info-card .info-sub{font-size:14px;color:var(--ink-3);margin-bottom:16px}
  .def-list{display:flex;flex-direction:column}
  .def-row{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px}
  .def-row:last-child{border-bottom:0}
  .def-row dt{color:var(--ink-2);flex:none;max-width:46%}
  .def-row dd{color:var(--ink);font-weight:600;text-align:right}

  /* ---------- 表单 ---------- */
  .form-layout{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
  .form-intro h2{font-size:30px;margin-bottom:14px}
  .form-intro p{color:var(--ink-2)}
  .dot-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
  .dot-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);line-height:1.85}
  .dot-list li::before{
    content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;
    background:var(--support);
  }
  .contact-form{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);padding:28px 26px;
  }
  .field{margin-bottom:18px}
  .field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
  .field .req{color:var(--accent-deep);margin-left:2px}
  .field input,.field select,.field textarea{
    width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--line);
    border-radius:var(--radius-btn);background:#fff;font-size:15px;color:var(--ink);
    transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
  }
  .field textarea{min-height:132px;resize:vertical;line-height:1.8}
  .field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
  .field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(29,92,216,.35)}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,92,216,.15);
  }
  .form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:22px}
  .privacy-note{font-size:13px;color:var(--ink-3);line-height:1.7;margin-top:14px}
  .form-tip{
    display:none;margin-top:16px;padding:12px 14px;border-radius:var(--radius-inner);
    background:#E4F7F4;color:var(--support-deep);font-size:14px;border:1px solid rgba(15,175,155,.28);
  }
  .form-tip.show{display:block}

  /* ---------- CTA ---------- */
  .cta-band{padding:0 0 96px}
  .cta-inner{
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    padding:34px 36px;border-radius:var(--radius-card);
    background:rgba(29,92,216,.06);border:1px solid rgba(29,92,216,.2);
  }
  .cta-inner h2{font-size:24px;margin-bottom:8px}
  .cta-inner p{color:var(--ink-2);font-size:15px}
  .cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap}

  /* ---------- 页脚 ---------- */
  .site-foot{background:#0F1B2D;color:#C9D5E6;padding:64px 0 28px;font-size:14.5px;line-height:1.85}
  .foot-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr)) minmax(0,1.3fr);gap:40px}
  .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .foot-brand strong{color:#fff;font-size:15.5px}
  .site-foot h3{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600}
  .site-foot p{color:#C9D5E6}
  .foot-links{display:flex;flex-direction:column;gap:10px}
  .foot-links a{color:#C9D5E6;transition:color .16s ease}
  .foot-links a:hover{color:#fff}
  .foot-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid rgba(201,213,230,.16);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#8FA2BC;
  }
  .to-top{
    background:transparent;border:1px solid rgba(201,213,230,.3);color:#C9D5E6;
    min-height:38px;padding:0 16px;border-radius:var(--radius-btn);cursor:pointer;
    transition:background .18s ease,color .18s ease,border-color .18s ease;
  }
  .to-top:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.45)}

  /* ---------- 响应式 ---------- */
  @media (min-width:1024px){
    .mobile-topbar{display:none}
    .scrim{display:none}
    .main{margin-left:var(--sidebar-w)}
  }
  @media (max-width:1023.98px){
    :root{--sidebar-w:280px}
    .sidebar{width:280px;transform:translateX(-100%);box-shadow:0 0 40px rgba(16,27,45,.2)}
    body.drawer-open .sidebar{transform:translateX(0)}
    body.mini .sidebar{width:280px}
    body.mini .brand-text,
    body.mini .nav-item span,
    body.mini .btn-label,
    body.mini .collapse-btn span,
    body.mini .side-note,
    body.mini .side-copy{display:inline}
    body.mini .side-logo{justify-content:flex-start;padding:0 20px}
    body.mini .nav-item{justify-content:flex-start;padding:0 12px}
    body.mini .side-cta{padding:14px 12px}
    body.mini .side-cta .btn{width:100%;height:auto;min-height:46px;padding:0 22px}
    body.mini .collapse-btn{justify-content:flex-start;padding:0 12px}
    .collapse-btn{display:none}
    .main{margin-left:0;padding-top:var(--topbar-h)}
    .section{padding:72px 0}
    .section-tight{padding:56px 0}
    .cta-band{padding:0 0 72px}
    .head-grid{grid-template-columns:1fr;gap:32px;align-items:start}
    .split-5-7{grid-template-columns:1fr;gap:32px}
    .form-layout{grid-template-columns:1fr;gap:32px}
    .info-grid{grid-template-columns:1fr}
    .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:767.98px){
    body{font-size:16px}
    .wrap{padding:0 28px}
    .head-grid h1{font-size:30px}
    .sec-head h2,.form-intro h2{font-size:24px}
    .faq-columns{grid-template-columns:1fr;gap:40px}
    .cta-inner{flex-direction:column;align-items:flex-start;padding:26px 22px}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1 1 auto}
    .faq-card{padding:0 18px}
  }
  @media (max-width:519.98px){
    .wrap{padding:0 18px}
    .head-grid h1{font-size:26px}
    .lead{font-size:15.5px}
    .sec-head h2,.form-intro h2{font-size:22px}
    .section{padding:56px 0}
    .section-tight{padding:48px 0}
    .foot-grid{grid-template-columns:1fr}
    .btn{width:100%}
    .btn-sm{width:auto}
    .form-actions .btn{width:100%}
    .contact-form{padding:22px 18px}
    .def-row{flex-direction:column;gap:4px}
    .def-row dd{text-align:left}
  }