/* roulang page: index */
:root{
  --brand-900:#2B143D;
  --brand-700:#4A2170;
  --brand-600:#5B2A86;
  --brand-400:#9A6BC4;
  --accent:#FF6B4A;
  --lime:#C6F24E;
  --bg:#FAF8F5;
  --bg-alt:#F1ECF7;
  --surface:#FFFFFF;
  --ink:#1C1522;
  --ink-2:#574E63;
  --line:#E6E0EE;
  --grad-brand:linear-gradient(120deg,#4A2170 0%,#7A3FAD 55%,#FF6B4A 100%);
  --sh-1:0 2px 4px rgba(43,20,61,.04),0 12px 32px rgba(43,20,61,.08);
  --sh-2:0 18px 44px rgba(43,20,61,.14);
  --r-xl:32px; --r-lg:24px; --r-md:16px; --r-sm:12px; --r-pill:999px;
  --nav-w:240px;
  --ease:240ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
}
body,button,input,select,textarea,h1,h2,h3,h4,h5,h6{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",sans-serif;
}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.2;font-weight:800;letter-spacing:0;color:var(--ink)}
h1{font-size:48px}
h2{font-size:32px}
h3{font-size:21px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
a:hover,a:focus{color:var(--brand-700)}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0 0 1em;padding-left:1.2em}
ul{list-style:none;padding-left:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--brand-600);color:#fff}

/* ---------- Foundation overrides ---------- */
.grid-x{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;width:100%;margin:0}
.grid-x > .cell{width:auto;min-width:0;grid-column:span 12;margin:0}
.grid-x.grid-margin-x{margin-left:0;margin-right:0;width:100%}
.grid-x.grid-margin-x > .cell{margin-left:0;margin-right:0}
.button,button.button{all:unset}
input,select,textarea{font-family:inherit}
.callout{background:none;border:0;margin:0;padding:0;border-radius:0}
ul.menu,ul.menu li{margin:0;padding:0}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.page-shell{margin-left:var(--nav-w);min-height:100vh}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:16px;color:var(--ink-2);line-height:1.8}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--bg-alt);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);padding:14px 30px;font-size:16px;font-weight:600;line-height:1.2;border:1.5px solid transparent;transition:all var(--ease);cursor:pointer;text-align:center}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(74,33,112,.24)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);color:#fff;box-shadow:0 16px 34px rgba(74,33,112,.3)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:transparent;border-color:var(--brand-600);color:var(--brand-600)}
.btn-ghost:hover{background:var(--bg-alt);transform:translateY(-2px);color:var(--brand-700)}
.btn-light{background:rgba(255,255,255,.94);color:var(--brand-700)}
.btn-light:hover{background:#fff;color:var(--brand-600);transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px)}
.btn-block{width:100%}
.btn-sm{padding:10px 22px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;filter:none}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1}
.badge-brand{background:var(--bg-alt);color:var(--brand-600)}
.badge-data{background:#EAF9C9;color:#3D5A12}
.badge-compare{background:#FFE7E0;color:#C43A1C}
.badge-soft{background:rgba(255,255,255,.16);color:#fff}

/* ---------- Side nav ---------- */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:linear-gradient(180deg,#2B143D 0%,#3A1C52 100%);
  color:#fff;display:flex;flex-direction:column;
  padding:26px 18px 22px;overflow-y:auto;z-index:60;
  border-right:1px solid rgba(255,255,255,.06);
}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 8px 22px;color:#fff}
.side-brand:hover{color:#fff}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:var(--grad-brand);color:#fff;font-size:19px;font-weight:800;line-height:1}
.brand-text{font-size:18px;font-weight:800;letter-spacing:0;line-height:1.25}
.side-links{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:flex;align-items:center;min-height:48px;padding:0 16px;border-radius:12px;
  color:rgba(255,255,255,.78);font-size:15px;font-weight:500;position:relative;
}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:rgba(255,255,255,.10);color:#fff;font-weight:700}
.nav-link.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:0 4px 4px 0;background:var(--lime)}
.nav-link:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.side-divider{height:1px;background:rgba(255,255,255,.14);margin:22px 8px}
.side-info{padding:0 10px;color:rgba(255,255,255,.62);font-size:13px;line-height:1.9}
.side-info strong{display:block;color:#fff;font-size:14px;font-weight:600;margin-bottom:4px}
.side-cta{margin-top:auto;padding-top:22px}
.side-cta .btn-primary{box-shadow:0 12px 26px rgba(255,107,74,.24)}

/* ---------- Mobile bar ---------- */
.mobile-bar{display:none;position:sticky;top:0;z-index:70;height:64px;background:#fff;border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;padding:0 18px;box-shadow:0 2px 10px rgba(43,20,61,.05)}
.mobile-brand{display:flex;align-items:center;gap:9px;color:var(--ink);font-size:16px;font-weight:800}
.mobile-brand:hover{color:var(--brand-600)}
.hamburger{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:var(--bg-alt);border:1px solid var(--line);color:var(--brand-700)}
.hamburger:hover{background:#E7DEF2}
.hamburger span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer{position:fixed;inset:0;background:linear-gradient(180deg,#2B143D 0%,#3A1C52 100%);z-index:80;padding:28px 22px;display:flex;flex-direction:column;transform:translateX(100%);transition:transform 300ms ease;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.12);color:#fff;border:0;font-size:20px;line-height:1}
.drawer-links{display:flex;flex-direction:column}
.drawer-link{display:flex;align-items:center;min-height:56px;color:#fff;font-size:18px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.12);opacity:0;transform:translateY(8px);transition:opacity 260ms ease,transform 260ms ease}
.drawer.open .drawer-link{opacity:1;transform:translateY(0)}
.drawer-link.active{color:var(--lime)}
.drawer-cta{margin-top:28px}

/* ---------- Hero ---------- */
.hero-section{padding:56px 0 0}
.hero-card{position:relative;border-radius:var(--r-xl);overflow:hidden;padding:60px 56px;color:#fff;isolation:isolate;box-shadow:var(--sh-2)}
.hero-card::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;z-index:-2}
.hero-card::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(43,20,61,.92) 0%,rgba(74,33,112,.78) 48%,rgba(255,107,74,.52) 100%);z-index:-1}
.hero-inner{display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:center}
.hero-copy h1{color:#fff;font-size:50px;margin:18px 0 18px}
.hero-sub{font-size:19px;line-height:1.7;color:rgba(255,255,255,.86);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-badges{display:flex;flex-direction:column;gap:14px}
.hero-badge{background:rgba(255,255,255,.94);border-radius:var(--r-sm);padding:16px 20px;box-shadow:0 10px 26px rgba(20,8,32,.18);display:flex;align-items:baseline;gap:12px}
.hb-num{font-size:26px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.1}
.hb-label{font-size:13px;color:var(--ink-2)}

/* ---------- Metrics ---------- */
.metrics-grid{gap:24px}
.metric-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;height:100%;box-shadow:var(--sh-1);transition:all var(--ease);position:relative}
.metric-card:hover{border-color:var(--brand-600);box-shadow:var(--sh-2);transform:translateY(-4px)}
.metric-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.metric-value{font-size:44px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric-value small{font-size:17px;font-weight:700;margin-left:4px}
.metric-label{font-size:14px;color:var(--ink-2);margin-top:10px}
.metric-bar{height:6px;border-radius:var(--r-pill);background:var(--bg-alt);overflow:hidden;margin-top:18px}
.metric-bar i{display:block;height:100%;border-radius:var(--r-pill);background:var(--lime);position:relative}
.metric-bar i::after{content:"";position:absolute;right:0;top:-2px;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid var(--brand-600)}
.metric-bar i.fill-brand{background:var(--brand-600)}

/* ---------- Service matrix ---------- */
.service-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;height:100%;box-shadow:var(--sh-1);transition:all var(--ease);display:flex;flex-direction:column}
.service-card:hover{border-color:var(--brand-600);box-shadow:var(--sh-2);transform:translateY(-4px)}
.service-card h3{font-size:18px;margin:18px 0 10px}
.service-card p{font-size:15px;color:var(--ink-2);line-height:1.75}
.service-card.feature{padding:0;overflow:hidden;display:grid;grid-template-columns:1fr;color:var(--ink)}
.service-card.feature .feature-media{position:relative;aspect-ratio:16/10;overflow:hidden}
.service-card.feature .feature-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 420ms ease}
.service-card.feature:hover .feature-media img{transform:scale(1.04)}
.service-card.feature .feature-body{padding:32px}
.icon-line{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;background:var(--bg-alt);color:var(--brand-600);flex:0 0 46px}
.icon-line svg{width:22px;height:22px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);margin-top:auto;padding-top:16px}
.text-link:hover{gap:10px;color:var(--brand-700)}
.text-link::after{content:"→"}

/* ---------- Compare ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.compare-col{border-radius:var(--r-lg);padding:30px;border:1px solid var(--line)}
.compare-before{background:#F4F2F6;color:var(--ink-2)}
.compare-after{background:linear-gradient(160deg,#F1ECF7 0%,#FFFFFF 100%);border-color:#DCCFEC}
.compare-col h3{font-size:18px;margin-bottom:8px}
.compare-col > p{font-size:14px;color:var(--ink-2);margin-bottom:22px}
.compare-row{margin-bottom:20px}
.compare-row:last-child{margin-bottom:0}
.compare-row-top{display:flex;align-items:baseline;justify-content:space-between;font-size:14px;margin-bottom:8px;gap:12px}
.compare-row-top b{font-variant-numeric:tabular-nums;font-weight:800;font-size:16px}
.compare-before .compare-row-top b{color:var(--ink-2)}
.compare-after .compare-row-top b{color:var(--brand-600)}
.compare-track{height:8px;border-radius:var(--r-pill);background:rgba(43,20,61,.08);overflow:hidden}
.compare-track i{display:block;height:100%;border-radius:var(--r-pill)}
.compare-before .compare-track i{background:#BDB4C7}
.compare-after .compare-track i{background:var(--grad-brand)}
.compare-badge{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);font-size:13px;font-weight:600;background:#EAF9C9;color:#3D5A12;margin-left:10px}

/* ---------- News ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.news-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;align-items:start}
.news-feature{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:all var(--ease);display:block;color:inherit}
.news-feature:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:var(--brand-600);color:inherit}
.news-feature img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-feature-body{padding:28px}
.news-feature h3{font-size:22px;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature p{font-size:15px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;font-size:14px;color:var(--ink-2);margin-top:16px}
.news-rows{display:flex;flex-direction:column;gap:14px}
.news-row{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 24px;min-height:96px;box-shadow:var(--sh-1);transition:all var(--ease);color:inherit}
.news-row:hover{transform:translateY(-2px);border-color:var(--brand-600);box-shadow:0 10px 26px rgba(43,20,61,.10);color:inherit}
.news-row:hover h3{color:var(--brand-600)}
.news-row h3{font-size:17px;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row p{font-size:14px;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row-side{display:flex;align-items:center;gap:14px;color:var(--ink-2);font-size:14px;white-space:nowrap}
.news-arrow{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--bg-alt);color:var(--brand-600);font-size:15px}
.news-row:hover .news-arrow{background:var(--brand-600);color:#fff}
.news-empty{background:var(--bg-alt);border-radius:var(--r-lg);min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:40px 24px;border:1px dashed #D6C8E8}
.news-empty .icon-line{background:#fff}
.news-empty p{color:var(--ink-2);font-size:15px;margin:0}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:all var(--ease)}
.faq-item:hover{border-color:#D6C8E8}
.faq-item.is-open{border-color:var(--brand-600);box-shadow:var(--sh-1)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;padding:14px 24px;background:transparent;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{position:relative;width:26px;height:26px;flex:0 0 26px;border-radius:50%;background:var(--bg-alt);transition:all var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:transform var(--ease)}
.faq-item.is-open .faq-icon{background:var(--brand-600);transform:rotate(180deg)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-a-inner{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- Contact ---------- */
.contact-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1 / -1}
.form-field label{font-size:14px;color:var(--ink-2);font-weight:600}
.form-field label .req{color:var(--accent);margin-left:2px}
.form-field input,.form-field select,.form-field textarea{
  width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;
  color:var(--ink);font-size:15px;padding:0 16px;height:52px;transition:all var(--ease);
}
.form-field textarea{height:auto;min-height:120px;padding:14px 16px;line-height:1.7;resize:vertical}
.form-field input:hover,.form-field select:hover,.form-field textarea:hover{border-color:#D6C8E8}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(91,42,134,.12)}
.form-field input.error,.form-field textarea.error{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,107,74,.12)}
.form-hint{font-size:13px;color:var(--ink-2)}
.form-error{font-size:14px;color:var(--accent);min-height:20px}
.form-note{font-size:14px;color:var(--ink-2);margin-top:16px;display:flex;align-items:flex-start;gap:8px}
.form-note b{color:var(--accent);font-weight:700}
.form-success{display:none;background:#EAF9C9;color:#3D5A12;border-radius:var(--r-md);padding:14px 18px;font-size:14px;margin-top:16px}
.form-success.show{display:block}
.trust-list{display:flex;flex-direction:column;gap:16px}
.trust-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);transition:all var(--ease)}
.trust-item:hover{border-color:var(--brand-600);transform:translateY(-4px);box-shadow:var(--sh-2)}
.trust-item h4{font-size:17px;margin:14px 0 8px;font-weight:700}
.trust-item p{font-size:14px;color:var(--ink-2);margin:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.76);margin-top:0;position:relative}
.site-footer::before{content:"";display:block;height:1px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand .brand-text{font-size:18px;color:#fff}
.footer-brand:hover{color:#fff}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:rgba(255,255,255,.7);font-size:15px}
.footer-col a:hover{color:var(--lime)}
.footer-contact li{font-size:15px;color:rgba(255,255,255,.7);line-height:1.8}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom a{color:rgba(255,255,255,.66)}
.footer-bottom a:hover{color:var(--lime)}

/* ---------- Responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1240px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .page-shell{margin-left:0}
  .mobile-bar{display:flex}
  .section{padding:72px 0}
  .hero-section{padding:28px 0 0}
  .hero-card{padding:40px 32px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-copy h1{font-size:36px}
  .hero-sub{font-size:17px}
  .compare-wrap{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .contact-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
  .container{padding:0 24px}
  h2{font-size:27px}
}
@media (max-width:767px){
  .grid-x{gap:16px}
  .metric-value{font-size:36px}
  .hero-copy h1{font-size:31px}
  .hero-card{border-radius:24px;padding:32px 22px}
  .hero-badge{padding:14px 16px}
  .hb-num{font-size:22px}
  .news-row{grid-template-columns:1fr;gap:10px;padding:18px 20px}
  .news-row-side{justify-content:space-between;width:100%}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .faq-q{font-size:16px;padding:14px 18px}
  .faq-a-inner{padding:0 18px 20px}
  .section{padding:56px 0}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:19px}
  .btn{width:100%;padding:14px 22px}
  .hero-actions{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
}
@media (min-width:640px){
  .cell.medium-6{grid-column:span 6}
  .cell.medium-12{grid-column:span 12}
}
@media (min-width:1024px){
  .cell.large-3{grid-column:span 3}
  .cell.large-4{grid-column:span 4}
  .cell.large-5{grid-column:span 5}
  .cell.large-6{grid-column:span 6}
  .cell.large-7{grid-column:span 7}
  .cell.large-8{grid-column:span 8}
}

/* roulang page: article */
:root{
  --brand-900:#2B143D;
  --brand-700:#4A2170;
  --brand-600:#5B2A86;
  --brand-400:#9A6BC4;
  --accent:#FF6B4A;
  --lime:#C6F24E;
  --bg:#FAF8F5;
  --bg-alt:#F1ECF7;
  --surface:#FFFFFF;
  --ink:#1C1522;
  --ink-2:#574E63;
  --line:#E6E0EE;
  --grad-brand:linear-gradient(120deg,#4A2170 0%,#7A3FAD 55%,#FF6B4A 100%);
  --radius-xl:32px;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 4px rgba(43,20,61,.04),0 12px 32px rgba(43,20,61,.08);
  --shadow-2:0 18px 44px rgba(43,20,61,.14);
  --ease:240ms ease;
  --container:1240px;
  --nav-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{letter-spacing:0;line-height:1.3;margin:0;font-weight:800;color:var(--ink);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:3px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:linear-gradient(180deg,var(--brand-900) 0%,#3A1C52 100%);
  padding:26px 16px 22px;
  display:flex;flex-direction:column;
  overflow-y:auto;z-index:60;
}
.side-brand{margin-bottom:22px;}
.brand-link{display:flex;align-items:center;gap:10px;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;flex:0 0 auto;border-radius:12px;
  background-image:var(--grad-brand);
  color:#fff;font-size:18px;font-weight:800;line-height:1;
}
.brand-text{font-size:18px;font-weight:800;color:#fff;line-height:1.25;}
.brand-link:hover .brand-text{color:var(--lime);}
.side-links{display:flex;flex-direction:column;gap:6px;}
.nav-link{
  position:relative;display:flex;align-items:center;height:48px;padding:0 16px;
  border-radius:var(--radius-sm);font-size:15px;font-weight:500;
  color:rgba(255,255,255,.78);
}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-link.active{background:rgba(255,255,255,.1);color:#fff;font-weight:700;}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:999px;background:var(--lime);
}
.nav-link:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.side-divider{height:1px;background:rgba(255,255,255,.14);margin:20px 0 16px;}
.side-meta{font-size:13px;line-height:1.9;color:rgba(255,255,255,.6);}
.side-meta p{margin:0;}
.side-cta{margin-top:auto;width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 30px;border-radius:999px;
  font-size:16px;font-weight:700;border:1.5px solid transparent;
  cursor:pointer;transition:all var(--ease);white-space:nowrap;
}
.btn-primary{background-image:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(122,63,173,.28);}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 34px rgba(122,63,173,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--brand-600);color:var(--brand-600);}
.btn-ghost:hover{background:var(--bg-alt);border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:#fff;color:var(--brand-700);box-shadow:0 10px 24px rgba(28,21,34,.18);}
.btn-light:hover{background:#fff;color:var(--brand-600);transform:translateY(-2px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn-sm{height:44px;padding:0 22px;font-size:15px;}

/* ---------- 移动顶栏 ---------- */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:70;
  height:64px;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(43,20,61,.06);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-topbar .brand-text{color:var(--ink);font-size:16px;}
.hamburger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900);transition:all var(--ease);}
.hamburger:hover{border-color:var(--brand-600);}
.mobile-drawer{
  position:fixed;inset:0;z-index:90;padding:24px 20px 32px;
  background:linear-gradient(180deg,var(--brand-900) 0%,#3A1C52 100%);
  transform:translateX(100%);transition:transform 320ms ease;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.28);
  background:transparent;color:#fff;font-size:20px;cursor:pointer;line-height:1;
}
.drawer-close:hover{background:rgba(255,255,255,.1);}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  display:flex;align-items:center;height:56px;font-size:18px;color:#fff;
  border-bottom:1px solid rgba(255,255,255,.14);
  opacity:0;transform:translateY(10px);
}
.mobile-drawer.is-open .drawer-links a{opacity:1;transform:translateY(0);transition:opacity 320ms ease,transform 320ms ease;}
.mobile-drawer.is-open .drawer-links a:nth-child(1){transition-delay:60ms;}
.mobile-drawer.is-open .drawer-links a:nth-child(2){transition-delay:120ms;}
.mobile-drawer.is-open .drawer-links a:nth-child(3){transition-delay:180ms;}
.mobile-drawer.is-open .drawer-links a:nth-child(4){transition-delay:240ms;}
.mobile-drawer.is-open .drawer-links a:nth-child(5){transition-delay:300ms;}
.drawer-links a:hover{color:var(--lime);}
.drawer-cta{margin-top:24px;width:100%;}

/* ---------- 页面容器 ---------- */
.page-wrap{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.page-wrap main{flex:1 1 auto;}

/* ---------- 顶部横幅 ---------- */
.page-banner{
  position:relative;
  padding:54px 0 52px;
  border-radius:0 0 var(--radius-xl) var(--radius-xl);
  background-image:linear-gradient(120deg,rgba(43,20,61,.94) 0%,rgba(74,33,112,.86) 60%,rgba(255,107,74,.55) 100%),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb .sep{color:rgba(255,255,255,.42);}
.breadcrumb .current{color:rgba(255,255,255,.62);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:520px;}
.cat-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:0;
  background:rgba(198,242,78,.16);color:var(--lime);border:1px solid rgba(198,242,78,.36);
}
.page-title{
  margin:16px 0 18px;
  font-size:44px;line-height:1.22;font-weight:800;color:#fff;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:rgba(255,255,255,.72);}
.meta-row i{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.42);display:inline-block;}

/* ---------- 正文布局 ---------- */
.article-section{padding:56px 0 72px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;}
.article-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px 44px 44px;box-shadow:var(--shadow-1);
}
.article-body{font-size:17px;line-height:1.85;color:#241B2E;max-width:800px;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:27px;line-height:1.35;margin:48px 0 18px;
  padding-left:16px;font-weight:800;color:var(--brand-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;
  width:4px;border-radius:999px;background:var(--brand-600);
}
.article-body h3{font-size:21px;margin:34px 0 14px;color:var(--brand-700);font-weight:800;}
.article-body h4{font-size:18px;margin:26px 0 12px;color:var(--ink);font-weight:700;}
.article-body p{margin:0 0 1.2em;color:#2E2538;}
.article-body strong{color:var(--brand-700);font-weight:700;}
.article-body ul{margin:0 0 1.4em;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:7px;height:7px;border-radius:50%;background:var(--brand-400);
}
.article-body ol{margin:0 0 1.4em;counter-reset:olc;}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:10px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:1px;
  font-size:13px;font-weight:800;color:var(--brand-600);
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  border-left:3px solid var(--brand-600);
  background:var(--bg-alt);border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:20px;margin:28px auto;border:1px solid var(--line);}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px;}
.article-body a{font-weight:600;border-bottom:1px solid rgba(91,42,134,.3);}
.article-body a:hover{border-bottom-color:var(--accent);}
.article-body .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-md);margin:24px 0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:var(--bg-alt);color:var(--brand-700);font-weight:700;font-size:14px;}
.article-body tbody tr:nth-child(odd){background:#FBF9FE;}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body code{
  background:#F4F0FA;color:var(--brand-700);
  padding:2px 8px;border-radius:8px;font-size:15px;
}
.article-body pre{
  background:#F4F0FA;border-radius:var(--radius-md);
  padding:18px 20px;overflow-x:auto;margin:24px 0;font-size:15px;
}
.article-body pre code{background:none;padding:0;}
.article-body hr{border:none;height:1px;background:var(--line);margin:36px 0;}

/* 空态 */
.article-empty{
  text-align:center;padding:64px 24px;border-radius:var(--radius-lg);
  background:var(--bg-alt);border:1px dashed var(--line);
}
.article-empty .empty-icon{
  width:56px;height:56px;border-radius:16px;margin:0 auto 18px;
  background-image:var(--grad-brand);opacity:.9;
}
.article-empty .empty-title{font-size:22px;font-weight:800;margin-bottom:8px;}
.article-empty .empty-desc{font-size:15px;color:var(--ink-2);margin-bottom:24px;}

/* ---------- 侧边小卡 ---------- */
.article-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px;}
.aside-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),border-color var(--ease);
}
.aside-card:hover{box-shadow:var(--shadow-2);border-color:var(--brand-600);}
.aside-card h4{font-size:16px;font-weight:800;margin-bottom:14px;color:var(--brand-900);}
.aside-list li{
  font-size:14px;color:var(--ink-2);padding:9px 0 9px 18px;position:relative;
  border-bottom:1px dashed var(--line);
}
.aside-list li:last-child{border-bottom:none;}
.aside-list li::before{
  content:"";position:absolute;left:0;top:17px;
  width:6px;height:6px;border-radius:50%;background:var(--lime);
}
.aside-card p{font-size:14px;color:var(--ink-2);margin-bottom:16px;}
.aside-btn{width:100%;height:46px;font-size:15px;padding:0 18px;}

/* ---------- 标签与翻页 ---------- */
.tag-strip{margin-top:32px;padding-top:24px;border-top:1px solid var(--line);}
.tag-strip h4{font-size:14px;color:var(--ink-2);font-weight:600;margin-bottom:12px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;background:var(--bg-alt);color:var(--brand-600);
  border:1px solid transparent;transition:all var(--ease);
}
a.tag:hover{background:#fff;border-color:var(--brand-600);color:var(--brand-700);}
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:36px;}
.pager-item{
  display:flex;flex-direction:column;gap:6px;
  padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--surface);transition:all var(--ease);
}
.pager-item span{font-size:13px;color:var(--ink-2);}
.pager-item strong{font-size:16px;color:var(--ink);font-weight:700;line-height:1.5;}
.pager-item:hover{border-color:var(--brand-600);box-shadow:var(--shadow-1);transform:translateY(-2px);}
.pager-item:hover strong{color:var(--brand-600);}
.back-row{margin-top:20px;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 相关推荐 ---------- */
.related-section{padding:0 0 72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:30px;font-weight:800;}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:8px;}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rec-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);transition:all var(--ease);
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-600);}
.rec-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.05);}
.rec-thumb::after{content:"";position:absolute;inset:0;border:1px solid rgba(43,20,61,.08);border-radius:0;}
.rec-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.rec-body h3{
  font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-card:hover .rec-body h3{color:var(--brand-600);}
.rec-meta{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--ink-2);margin-top:auto;}
.rec-meta em{
  font-style:normal;display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--bg-alt);color:var(--brand-600);font-size:13px;font-weight:600;
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  border-radius:var(--radius-lg);padding:44px 46px;color:#fff;
  background-image:linear-gradient(120deg,rgba(43,20,61,.96) 0%,rgba(74,33,112,.9) 55%,rgba(255,107,74,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  margin-bottom:72px;
}
.cta-band h2{font-size:28px;color:#fff;margin-bottom:10px;}
.cta-band p{font-size:15px;color:rgba(255,255,255,.78);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);color:rgba(255,255,255,.72);
  padding:56px 0 26px;border-top:1px solid transparent;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background-image:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:18px;font-weight:800;color:#fff;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:15px;color:rgba(255,255,255,.68);}
.footer-col ul li a:hover{color:var(--lime);}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.68);line-height:1.8;margin-bottom:10px;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1439px){
  :root{--container:1240px;}
}
@media screen and (max-width:1023px){
  .side-nav{display:none;}
  .page-wrap{margin-left:0;}
  .mobile-topbar{display:flex;}
  .page-banner{padding:40px 0 38px;border-radius:0 0 24px 24px;}
  .page-title{font-size:32px;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap;}
  .aside-card{flex:1 1 260px;}
  .article-panel{padding:30px 28px 34px;}
  .article-section{padding:40px 0 56px;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media screen and (max-width:639px){
  .container{padding:0 16px;}
  .page-banner{padding:32px 0 30px;}
  .page-title{font-size:26px;}
  .breadcrumb .current{max-width:220px;}
  .article-panel{padding:22px 18px 28px;border-radius:var(--radius-md);}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;margin:36px 0 14px;}
  .article-body h3{font-size:19px;}
  .article-body ul li,.article-body ol li{font-size:16px;}
  .article-body .table-wrap{border-radius:12px;}
  .article-aside{flex-direction:column;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .section-head{flex-direction:column;align-items:flex-start;}
  .section-head h2{font-size:24px;}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:30px 22px;border-radius:var(--radius-md);}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --brand-900:#2B143D;
  --brand-700:#4A2170;
  --brand-600:#5B2A86;
  --brand-400:#9A6BC4;
  --accent:#FF6B4A;
  --lime:#C6F24E;
  --bg:#FAF8F5;
  --bg-alt:#F1ECF7;
  --surface:#FFFFFF;
  --ink:#1C1522;
  --ink-2:#574E63;
  --line:#E6E0EE;
  --grad-brand:linear-gradient(120deg,#4A2170 0%,#7A3FAD 55%,#FF6B4A 100%);
  --radius-lg:24px;
  --radius-xl:32px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 4px rgba(43,20,61,.04),0 12px 32px rgba(43,20,61,.08);
  --shadow-2:0 18px 44px rgba(43,20,61,.14);
  --sidebar-w:240px;
  --ease:240ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
  letter-spacing:0;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-700)}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:999px;border:1.5px solid transparent;
  font-size:16px;font-weight:600;line-height:1;letter-spacing:0;
  transition:transform var(--ease),filter var(--ease),background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(255,107,74,.22)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 32px rgba(122,63,173,.26)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.98)}
.btn-ghost{background:transparent;border-color:var(--brand-600);color:var(--brand-600)}
.btn-ghost:hover{background:var(--bg-alt);border-color:var(--brand-700);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:44px;font-size:15px;padding:0 22px}
.btn-block{width:100%}
.btn[disabled],.btn.disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1}
.badge-brand{background:var(--bg-alt);color:var(--brand-600)}
.badge-data{background:#EAF9C9;color:#2F4A0B}
.badge-cmp{background:#FFE7E0;color:var(--accent)}

/* ---------- 桌面侧栏 ---------- */
.sidebar{display:none}
.page{margin:0;min-height:100vh}
@media (min-width:1024px){
  .sidebar{
    display:block;position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
    overflow-y:auto;background:linear-gradient(180deg,#2B143D 0%,#3A1C52 100%);
    z-index:40;
  }
  .page{margin-left:var(--sidebar-w)}
}
.sidebar-inner{padding:26px 18px 32px;display:flex;flex-direction:column;min-height:100%}
.brand{display:flex;align-items:center;gap:10px;padding:0 6px;margin-bottom:30px}
.brand-mark{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;background:var(--grad-brand);
  color:#fff;font-size:18px;font-weight:800;display:grid;place-items:center;
}
.brand-text{font-size:18px;font-weight:800;line-height:1.3;letter-spacing:0}
.sidebar .brand-text{color:#fff}
.side-links{display:block}
.nav-link{
  position:relative;display:flex;align-items:center;height:48px;padding:0 16px;
  border-radius:12px;color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
  transition:background var(--ease),color var(--ease);
}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:rgba(255,255,255,.10);color:#fff;font-weight:700}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:999px;background:var(--lime);
}
.sidebar-divider{height:1px;background:rgba(255,255,255,.12);margin:24px 6px}
.sidebar-meta p{font-size:13px;color:rgba(255,255,255,.6);margin:0 0 8px;padding:0 6px;line-height:1.6}
.sidebar-meta strong{display:block;color:rgba(255,255,255,.9);font-weight:600;font-size:13px}
.sidebar-cta{margin-top:auto;padding-top:24px}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  height:64px;padding:0 16px;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 2px 10px rgba(43,20,61,.05);
}
.topbar .brand{padding:0;margin:0}
.topbar .brand-text{color:var(--ink);font-size:16px}
.burger{
  width:44px;height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  border:1px solid var(--line);border-radius:12px;background:#fff;transition:border-color var(--ease),background var(--ease);
}
.burger:hover{border-color:var(--brand-600);background:var(--bg-alt)}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
@media (min-width:1024px){.topbar{display:none}}

.drawer{
  position:fixed;inset:0;z-index:60;display:flex;flex-direction:column;
  background:linear-gradient(180deg,#2B143D 0%,#3A1C52 100%);
  padding:22px 22px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform .32s ease;visibility:hidden;
}
.drawer.open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer .brand-text{color:#fff;font-size:17px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.2);
  background:transparent;color:#fff;font-size:20px;line-height:1;display:grid;place-items:center;
}
.drawer-close:hover{background:rgba(255,255,255,.1)}
.drawer .side-links{margin-bottom:24px}
.drawer .nav-link{height:56px;font-size:18px;border-radius:0;border-bottom:1px solid rgba(255,255,255,.12);opacity:0;transform:translateY(8px)}
.drawer.open .nav-link{animation:fadeUp .34s ease forwards}
.drawer.open .nav-link:nth-child(1){animation-delay:.05s}
.drawer.open .nav-link:nth-child(2){animation-delay:.11s}
.drawer.open .nav-link:nth-child(3){animation-delay:.17s}
.drawer.open .nav-link:nth-child(4){animation-delay:.23s}
.drawer.open .nav-link:nth-child(5){animation-delay:.29s}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
.drawer-cta{margin-top:auto}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media (min-width:640px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:32px}
.eyebrow{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:var(--bg-alt);color:var(--brand-600);font-size:13px;font-weight:700;margin-bottom:14px;
}
.section-alt .eyebrow{background:#fff}
.section-title{font-size:28px;font-weight:800;line-height:1.3;color:var(--ink)}
@media (min-width:1024px){.section-title{font-size:34px}}
.section-desc{margin-top:12px;font-size:16px;color:var(--ink-2)}
.lead{font-size:17px;color:var(--ink-2)}

/* ---------- 面包屑 ---------- */
.crumbs{padding:22px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;font-size:14px;color:var(--ink-2)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"›";color:var(--brand-400);font-size:15px}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs [aria-current="page"]{color:var(--brand-600);font-weight:600}

/* ---------- Hero ---------- */
.hero-wrap{padding:22px 0 0}
.hero{
  position:relative;border-radius:var(--radius-xl);overflow:hidden;
  background:#2B143D url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(43,20,61,.88) 0%,rgba(74,33,112,.78) 52%,rgba(122,63,173,.55) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;gap:28px;padding:40px 24px;color:#fff}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:1.12fr .88fr;align-items:center;gap:44px;padding:52px 48px}
}
.hero-title{font-size:30px;line-height:1.25;font-weight:800;letter-spacing:0;color:#fff}
@media (min-width:640px){.hero-title{font-size:34px}}
@media (min-width:1024px){.hero-title{font-size:44px;line-height:1.2}}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.82)}
@media (min-width:1024px){.hero-sub{font-size:19px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
@media (max-width:639px){.hero-actions .btn{width:100%}}
.hero-actions .btn-ghost{border-color:rgba(255,255,255,.72);color:#fff}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.hero-note{margin-top:20px;font-size:14px;color:rgba(255,255,255,.66)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.28);box-shadow:0 18px 44px rgba(20,8,32,.35);
}
.hero-chip{
  position:absolute;left:16px;bottom:16px;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.92);border-radius:8px;padding:10px 14px;
  box-shadow:0 6px 18px rgba(43,20,61,.18);color:var(--ink);
}
.hero-chip strong{font-size:17px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--brand-700)}
.hero-chip span{font-size:13px;color:var(--ink-2)}

/* ---------- 双栏图文 ---------- */
.split{display:grid;gap:32px}
@media (min-width:1024px){.split{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}}
.split-body p+p{margin-top:16px}
.check-list{list-style:none;margin-top:24px}
.check-list li{
  position:relative;padding:14px 0 14px 34px;border-top:1px solid var(--line);font-size:16px;color:var(--ink);
}
.check-list li:last-child{border-bottom:1px solid var(--line)}
.check-list li::before{
  content:"";position:absolute;left:2px;top:22px;width:12px;height:12px;border-radius:50%;
  background:var(--grad-brand);
}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.media-caption{margin-top:12px;font-size:13px;color:var(--ink-2);text-align:center}

/* ---------- 更新条 ---------- */
.update-band{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px 8px;box-shadow:var(--shadow-1)}
.update-band .update-inner{display:grid;gap:4px}
@media (min-width:1024px){.update-band .update-inner{grid-template-columns:repeat(3,1fr)}}
.update-item{
  display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:var(--radius-md);
  transition:background var(--ease),transform var(--ease);
}
.update-item:hover{background:var(--bg-alt);transform:translateY(-2px)}
.update-item .u-date{font-size:14px;color:var(--ink-2);font-variant-numeric:tabular-nums;flex:0 0 auto}
.update-item .u-text{font-size:15px;line-height:1.7;color:var(--ink)}

/* ---------- 编号步骤 ---------- */
.steps{display:grid;gap:16px;margin-top:8px}
@media (min-width:1024px){.steps{grid-template-columns:repeat(3,1fr)}}
.step-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-600)}
.step-num{
  display:block;font-size:44px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;margin-bottom:16px;
}
.step-card h3{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:10px}
.step-card p{font-size:15px;color:var(--ink-2);line-height:1.8}
.steps-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.steps-cta .hint{font-size:14px;color:var(--ink-2)}

/* ---------- 数据带 ---------- */
.metric-band{
  border-radius:var(--radius-lg);padding:32px 24px;
  background:linear-gradient(120deg,#2B143D 0%,#4A2170 58%,#5B2A86 100%);
  display:grid;gap:24px;
}
@media (min-width:640px){.metric-band{grid-template-columns:repeat(2,1fr);padding:36px 32px}}
@media (min-width:1024px){.metric-band{grid-template-columns:repeat(4,1fr);padding:40px 44px}}
.metric{padding-left:16px;border-left:2px solid rgba(198,242,78,.55)}
.metric .m-num{
  font-size:38px;font-weight:800;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:6px;
}
@media (min-width:1024px){.metric .m-num{font-size:44px}}
.metric .m-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--lime)}
.metric .m-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.72)}
.band-caption{margin-top:20px;font-size:14px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-list{margin-top:8px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item:hover{border-color:var(--brand-400)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 24px;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:999px;background:var(--bg-alt);color:var(--brand-600);
  display:grid;place-items:center;font-size:16px;line-height:1;transition:transform var(--ease),background var(--ease),color var(--ease);
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg);background:var(--brand-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--ease)}
.faq-a-inner{padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;gap:28px}
@media (min-width:1024px){.contact-grid{grid-template-columns:1.25fr .75fr;gap:40px;align-items:start}}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-1)}
@media (max-width:639px){.form-card{padding:22px;border-radius:20px}}
.form-grid{display:grid;gap:0}
@media (min-width:768px){.form-grid{grid-template-columns:1fr 1fr;column-gap:20px}}
.field{margin-bottom:20px}
.field-full{grid-column:1 / -1}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field .req{color:var(--accent);margin-left:4px}
.field input,.field select,.field textarea{
  width:100%;height:52px;padding:0 16px;border:1px solid var(--line);border-radius:14px;
  background:#fff;color:var(--ink);font-size:16px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:120px;padding:14px 16px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);background-position:calc(100% - 22px) 24px,calc(100% - 16px) 24px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:44px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(91,42,134,.12);
}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--brand-400)}
.form-note{margin-top:14px;font-size:13px;color:var(--ink-2);line-height:1.7}
.form-error{margin-top:8px;font-size:14px;color:var(--accent);display:none}
.trust-list{list-style:none;display:grid;gap:14px}
.trust-list li{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:20px 22px;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.trust-list li:hover{border-color:var(--brand-600);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.trust-list strong{display:block;font-size:16px;font-weight:700;color:var(--ink);margin-bottom:6px}
.trust-list span{font-size:14px;color:var(--ink-2);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-brand)}
.footer-grid{display:grid;gap:32px;padding:52px 0 36px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:12px;background:var(--grad-brand);color:#fff;font-weight:800;font-size:18px;display:grid;place-items:center}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:800}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:360px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:15px;transition:color var(--ease)}
.footer-col a:hover{color:var(--lime)}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600;margin-right:6px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* roulang page: category2 */
:root{
  --brand-900:#2B143D;
  --brand-800:#3A1C52;
  --brand-700:#4A2170;
  --brand-600:#5B2A86;
  --brand-400:#9A6BC4;
  --accent:#FF6B4A;
  --lime:#C6F24E;
  --bg:#FAF8F5;
  --bg-alt:#F1ECF7;
  --surface:#FFFFFF;
  --ink:#1C1522;
  --ink-2:#574E63;
  --line:#E6E0EE;
  --grad-brand:linear-gradient(120deg,#4A2170 0%,#7A3FAD 55%,#FF6B4A 100%);
  --radius-xl:32px;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 4px rgba(43,20,61,.04),0 12px 32px rgba(43,20,61,.08);
  --shadow-2:0 18px 44px rgba(43,20,61,.14);
  --sidebar-w:240px;
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .24s ease;}
a:hover,a:focus{color:var(--brand-700);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.25;letter-spacing:0;font-weight:800;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--sidebar-w);
  background:linear-gradient(180deg,var(--brand-900) 0%,var(--brand-800) 100%);
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  overflow-y:auto;
  z-index:60;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 4px 24px;
  color:#fff;
}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:12px;
  background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#fff;
  box-shadow:0 6px 18px rgba(255,107,74,.28);
}
.brand-text{
  font-size:18px;
  font-weight:800;
  color:#fff;
  letter-spacing:0;
  line-height:1.3;
}

.side-links{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-top:8px;
}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  height:48px;
  padding:0 16px;
  border-radius:var(--radius-sm);
  font-size:15px;
  color:rgba(255,255,255,.76);
  transition:background .24s ease,color .24s ease;
}
.nav-link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:4px;height:0;
  border-radius:0 4px 4px 0;
  background:var(--lime);
  transform:translateY(-50%);
  transition:height .24s ease;
}
.nav-link:hover{
  background:rgba(255,255,255,.06);
  color:#fff;
}
.nav-link.active{
  background:rgba(255,255,255,.1);
  color:#fff;
  font-weight:700;
}
.nav-link.active::before{height:22px;}
.nav-link:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

.side-divider{
  height:1px;
  margin:24px 0;
  background:linear-gradient(90deg,rgba(255,255,255,.24),rgba(255,255,255,0));
}
.side-meta{
  font-size:13px;
  color:rgba(255,255,255,.6);
  line-height:1.9;
  padding:0 4px;
}
.side-meta strong{display:block;color:rgba(255,255,255,.86);font-weight:600;margin-bottom:2px;}
.side-cta{margin-top:auto;padding-top:24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:52px;
  padding:0 28px;
  border-radius:999px;
  font-size:16px;
  font-weight:700;
  line-height:1;
  text-align:center;
  transition:transform .24s ease,box-shadow .24s ease,background .24s ease,color .24s ease,border-color .24s ease,filter .24s ease;
}
.btn-primary{
  background:var(--grad-brand);
  color:#fff;
  box-shadow:0 10px 26px rgba(74,33,112,.28);
}
.btn-primary:hover,.btn-primary:focus{
  color:#fff;
  filter:brightness(1.06);
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{
  border:1.5px solid var(--brand-600);
  color:var(--brand-600);
  background:transparent;
}
.btn-outline:hover,.btn-outline:focus{
  background:var(--bg-alt);
  color:var(--brand-700);
  border-color:var(--brand-700);
}
.btn-block{width:100%;}
.btn-sm{height:44px;padding:0 20px;font-size:15px;}

/* ---------- 移动顶栏 ---------- */
.mobile-bar{
  position:sticky;
  top:0;
  z-index:70;
  display:none;
  align-items:center;
  justify-content:space-between;
  height:64px;
  padding:0 16px;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(43,20,61,.05);
}
.mobile-brand{display:flex;align-items:center;gap:9px;}
.mobile-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:17px;border-radius:10px;}
.mobile-brand .brand-text{color:var(--ink);font-size:16px;font-weight:800;}
.hamburger{
  width:44px;height:44px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:5px;
  border-radius:12px;
  transition:background .24s ease;
}
.hamburger:hover{background:var(--bg-alt);}
.hamburger span{
  display:block;
  width:20px;height:2px;
  border-radius:2px;
  background:var(--brand-700);
  transition:transform .24s ease,opacity .24s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:65;
  background:linear-gradient(180deg,var(--brand-900) 0%,var(--brand-800) 100%);
  transform:translateX(100%);
  transition:transform .32s ease;
  padding:96px 24px 32px;
  overflow-y:auto;
  visibility:hidden;
}
.mobile-drawer.open{transform:translateX(0);visibility:visible;}
.drawer-links{display:flex;flex-direction:column;}
.drawer-link{
  display:flex;
  align-items:center;
  height:56px;
  padding:0 4px;
  font-size:18px;
  color:rgba(255,255,255,.86);
  border-bottom:1px solid rgba(255,255,255,.12);
  opacity:0;
  transform:translateY(-8px);
  transition:opacity .3s ease,transform .3s ease,color .24s ease;
}
.mobile-drawer.open .drawer-link{opacity:1;transform:translateY(0);}
.mobile-drawer.open .drawer-link:nth-child(1){transition-delay:.05s;}
.mobile-drawer.open .drawer-link:nth-child(2){transition-delay:.11s;}
.mobile-drawer.open .drawer-link:nth-child(3){transition-delay:.17s;}
.mobile-drawer.open .drawer-link:nth-child(4){transition-delay:.23s;}
.mobile-drawer.open .drawer-link:nth-child(5){transition-delay:.29s;}
.drawer-link:hover,.drawer-link.active{color:var(--lime);}
.drawer-cta{margin-top:28px;}

/* ---------- 主内容 ---------- */
.page-main{padding-bottom:96px;}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:28px 0 20px;
  font-size:14px;
  color:var(--ink-2);
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:var(--brand-400);}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- Hero（短版） ---------- */
.hero{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  min-height:clamp(300px,36vw,400px);
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-1);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,rgba(43,20,61,.86) 0%,rgba(74,33,112,.62) 52%,rgba(255,107,74,.42) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:48px 52px;
  max-width:820px;
}
.hero h1{
  font-size:clamp(30px,3.6vw,46px);
  line-height:1.2;
  color:#fff;
  margin-bottom:16px;
}
.hero-sub{
  font-size:18px;
  line-height:1.75;
  color:rgba(255,255,255,.86);
  margin-bottom:28px;
  max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero .btn-outline{border-color:rgba(255,255,255,.7);color:#fff;}
.hero .btn-outline:hover,.hero .btn-outline:focus{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(255,255,255,.16);
  color:#fff;
  font-size:13px;
  font-weight:600;
  backdrop-filter:blur(2px);
}

/* ---------- 板块 ---------- */
.section{padding-top:96px;}
.section-alt{
  margin-top:96px;
  padding:72px 0;
  background:var(--bg-alt);
  border-radius:var(--radius-xl);
}
.section-head{max-width:760px;margin-bottom:40px;}
.section-title{
  font-size:clamp(24px,2.6vw,32px);
  color:var(--ink);
  margin-bottom:14px;
}
.section-title::before{
  content:"";
  display:block;
  width:44px;height:4px;
  border-radius:999px;
  background:var(--grad-brand);
  margin-bottom:16px;
}
.section-sub{font-size:16px;color:var(--ink-2);line-height:1.8;}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:28px;
}
.stat-chip{
  display:flex;
  align-items:center;
  gap:16px;
  padding:22px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.stat-chip:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-600);}
.stat-chip-icon{
  width:46px;height:46px;flex:0 0 46px;
  border-radius:14px;
  background:var(--bg-alt);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;
}
.stat-chip-num{
  font-size:26px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--brand-600);
  line-height:1.2;
}
.stat-chip-label{font-size:14px;color:var(--ink-2);margin-top:2px;}

/* ---------- 交替图文行 ---------- */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding-top:64px;
}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-body{order:1;}
.feature-media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  aspect-ratio:16/10;
  background:var(--bg-alt);
}
.feature-media img{
  width:100%;height:100%;
  object-fit:cover;
}
.feature-body h2{
  font-size:clamp(22px,2.3vw,28px);
  margin-bottom:16px;
  color:var(--ink);
}
.feature-body p{color:var(--ink-2);margin-bottom:18px;}
.feature-list{display:flex;flex-direction:column;gap:12px;}
.feature-list li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:var(--ink-2);
  line-height:1.8;
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand-400);
}
.feature-list li strong{color:var(--ink);font-weight:700;}

/* ---------- 紧凑双列卡 ---------- */
.compact-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
  margin-top:36px;
}
.compact-card{
  display:flex;
  gap:18px;
  padding:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.compact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-600);}
.compact-icon{
  width:48px;height:48px;flex:0 0 48px;
  border-radius:14px;
  background:linear-gradient(135deg,#F1ECF7 0%,#E5DAF3 100%);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;
  font-variant-numeric:tabular-nums;
}
.compact-card h3{
  font-size:18px;
  margin-bottom:8px;
  color:var(--ink);
}
.compact-card p{font-size:15px;color:var(--ink-2);line-height:1.75;}

/* ---------- 锚点条目清单 ---------- */
.anchor-list{
  margin-top:36px;
  border-top:1px solid var(--line);
}
.anchor-item{
  display:grid;
  grid-template-columns:88px 1fr auto;
  gap:24px;
  align-items:center;
  padding:26px 8px;
  border-bottom:1px solid var(--line);
  transition:background .24s ease,padding-left .24s ease;
}
.anchor-item:hover{background:var(--surface);padding-left:20px;border-radius:var(--radius-md);}
.anchor-num{
  font-size:34px;
  font-weight:800;
  line-height:1;
  font-variant-numeric:tabular-nums;
  color:transparent;
  -webkit-text-stroke:1.4px var(--brand-400);
}
.anchor-item:hover .anchor-num{-webkit-text-stroke:1.4px var(--brand-600);}
.anchor-item h3{font-size:18px;margin-bottom:6px;}
.anchor-item p{font-size:15px;color:var(--ink-2);line-height:1.75;}
.anchor-arrow{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-600);
  font-size:16px;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease;
}
.anchor-item:hover .anchor-arrow{background:var(--brand-600);color:#fff;border-color:var(--brand-600);transform:translateX(4px);}

.mid-cta{
  margin-top:40px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:26px 32px;
  border-radius:var(--radius-lg);
  background:var(--bg-alt);
  border:1px solid var(--line);
}
.mid-cta p{font-size:16px;color:var(--ink);font-weight:600;}

/* ---------- FAQ ---------- */
.faq-list{margin-top:36px;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item.open{border-color:var(--brand-600);box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:64px;
  padding:14px 24px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .24s ease;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  width:30px;height:30px;flex:0 0 30px;
  border-radius:50%;
  background:var(--bg-alt);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  font-weight:700;
  line-height:1;
  transition:transform .24s ease,background .24s ease,color .24s ease;
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--brand-600);color:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{
  padding:0 24px 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}

/* ---------- 尾部 CTA + 表单 ---------- */
.cta-band{
  margin-top:96px;
  border-radius:var(--radius-xl);
  background:var(--grad-brand);
  padding:48px 52px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--shadow-1);
}
.cta-band h2{
  font-size:clamp(22px,2.4vw,30px);
  color:#fff;
  margin-bottom:10px;
}
.cta-band p{color:rgba(255,255,255,.86);font-size:16px;max-width:620px;}
.cta-band .btn{
  background:#fff;
  color:var(--brand-700);
  box-shadow:0 10px 26px rgba(20,8,32,.24);
}
.cta-band .btn:hover,.cta-band .btn:focus{color:var(--brand-700);background:#fff;transform:translateY(-2px);}

.form-section{padding-top:64px;}
.form-wrap{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:40px;
  align-items:start;
}
.trust-list{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.trust-item{
  display:flex;
  gap:14px;
  padding:20px 22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  transition:transform .24s ease,border-color .24s ease;
}
.trust-item:hover{transform:translateY(-3px);border-color:var(--brand-600);}
.trust-dot{
  width:10px;height:10px;flex:0 0 10px;
  border-radius:50%;
  background:var(--lime);
  margin-top:9px;
}
.trust-item h3{font-size:16px;margin-bottom:6px;}
.trust-item p{font-size:14px;color:var(--ink-2);line-height:1.7;}

.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-1);
}
.form-card h3{font-size:20px;margin-bottom:8px;}
.form-card .form-hint{font-size:14px;color:var(--ink-2);margin-bottom:24px;}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;color:var(--ink-2);font-weight:600;}
.field .req{color:var(--accent);}
.field input,
.field select,
.field textarea{
  width:100%;
  height:52px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--bg);
  color:var(--ink);
  font-size:15px;
  font-family:inherit;
  transition:border-color .24s ease,box-shadow .24s ease,background .24s ease;
}
.field textarea{
  height:120px;
  padding:14px 16px;
  line-height:1.7;
  resize:vertical;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--brand-600) 50%),linear-gradient(135deg,var(--brand-600) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:#9C93A8;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  background:#fff;
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(91,42,134,.12);
}
.field.error input,.field.error textarea{border-color:var(--accent);}
.field .err-msg{font-size:13px;color:var(--accent);display:none;}
.field.error .err-msg{display:block;}
.form-submit{margin-top:24px;}
.form-note{
  margin-top:16px;
  font-size:13px;
  color:var(--ink-2);
  line-height:1.7;
}
.form-feedback{
  margin-top:16px;
  padding:14px 18px;
  border-radius:var(--radius-sm);
  background:#EAF9C9;
  color:#2F4A05;
  font-size:14px;
  display:none;
}
.form-feedback.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--brand-900);
  position:relative;
  padding-top:64px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--grad-brand);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-text{font-size:17px;font-weight:800;color:#fff;}
.footer-about{
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.62);
  max-width:360px;
}
.footer-col h4{
  font-size:15px;
  color:#fff;
  margin-bottom:18px;
  font-weight:700;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  font-size:15px;
  color:rgba(255,255,255,.66);
  transition:color .24s ease;
}
.footer-col a:hover,.footer-col a:focus{color:var(--lime);}
.footer-contact li{
  font-size:14px;
  color:rgba(255,255,255,.66);
  line-height:1.8;
}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--sidebar-w);}
  .mobile-bar,.mobile-drawer{display:none;}
}
@media (max-width:1023px){
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  body{padding-left:0;}
  .page-main{padding-bottom:72px;}
  .section{padding-top:72px;}
  .section-alt{margin-top:72px;padding:56px 0;}
  .feature-row{gap:32px;padding-top:48px;}
  .form-wrap{grid-template-columns:1fr;gap:32px;}
  .cta-band{margin-top:72px;padding:36px 32px;}
  .site-footer{margin-top:72px;padding-top:48px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:839px){
  .feature-row{grid-template-columns:1fr;}
  .feature-row.reverse .feature-media{order:1;}
  .feature-row.reverse .feature-body{order:2;}
  .compact-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .hero-inner{padding:32px 22px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .section{padding-top:56px;}
  .section-alt{margin-top:56px;padding:40px 16px;}
  .form-grid{grid-template-columns:1fr;}
  .form-card{padding:24px 20px;}
  .compact-card{padding:20px;}
  .anchor-item{grid-template-columns:56px 1fr;gap:16px;padding:20px 4px;}
  .anchor-num{font-size:26px;}
  .anchor-arrow{display:none;}
  .mid-cta{padding:22px;flex-direction:column;align-items:flex-start;}
  .mid-cta .btn{width:100%;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q{font-size:16px;padding:14px 18px;}
  .faq-a p{padding:0 18px 20px;}
  .breadcrumb{padding:20px 0 16px;}
}