/* roulang page: index */
/* ================= 1. 设计变量 ================= */
:root{
  --c-brand:#6B4EFF;
  --c-brand-deep:#5A3BE0;
  --c-brand-2:#16D6C0;
  --c-brand-grad:linear-gradient(115deg,#7B4DFF 0%,#6B4EFF 42%,#16D6C0 100%);
  --c-accent:#FF6B4A;
  --c-ink:#16182E;
  --c-ink-2:#5B6081;
  --c-ink-3:#8B90AB;
  --c-bg:#F5F6FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF0FA;
  --c-line:#E4E7F3;
  --c-ok:#22C55E;
  --c-warn:#E5484D;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --container:968px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(22,24,46,.06);
  --sh-2:0 10px 30px rgba(22,24,46,.09);
  --sh-brand:0 16px 40px rgba(107,78,255,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ================= 2. reset 与 Foundation 覆盖 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover,a:focus{color:var(--c-brand-deep)}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
input{font-family:inherit}
h1,h2,h3,h4,h5,h6{font-family:var(--font-sans);color:var(--c-ink);font-weight:700}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px}
.button,.button:hover,.button:focus{background:transparent;color:inherit}
table{border-collapse:collapse;width:100%}

/* 栅格覆盖（Foundation XY Grid 定制） */
.grid-x{display:flex;flex-flow:row wrap;margin-left:-12px;margin-right:-12px}
.grid-x>.cell{flex:0 0 auto;min-width:0;width:100%;padding-left:12px;padding-right:12px}
@media (min-width:768px){
  .grid-x>.medium-3{width:25%}
  .grid-x>.medium-4{width:33.3333%}
  .grid-x>.medium-6{width:50%}
  .grid-x>.medium-8{width:66.6667%}
}
@media (min-width:992px){
  .grid-x>.large-3{width:25%}
  .grid-x>.large-4{width:33.3333%}
  .grid-x>.large-5{width:41.6667%}
  .grid-x>.large-6{width:50%}
  .grid-x>.large-8{width:66.6667%}
  .grid-x>.large-9{width:75%}
}

/* ================= 3. 布局 ================= */
.site-shell{
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  min-height:100vh;
  background:var(--c-bg);
}
.content-area{padding:24px 32px 0;min-width:0}
.container{width:100%;max-width:var(--container);margin:0 auto}
.container-wide{width:100%}
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head .sub{margin-top:10px;font-size:15px;line-height:1.8;color:var(--c-ink-2);max-width:660px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand)}
.link-more:hover{gap:10px}

/* ================= 4. 侧栏导航 ================= */
.side-nav{
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  padding:28px 18px 24px;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  z-index:40;
}
.brand{display:flex;align-items:center;gap:12px;padding:0 6px 22px;border-bottom:1px solid var(--c-line)}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:var(--c-brand-grad);
  display:grid;place-items:center;color:#fff;font-size:17px;
  box-shadow:var(--sh-brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.brand-text span{font-size:12px;color:var(--c-ink-3)}
.nav-list{display:flex;flex-direction:column;gap:6px;margin-top:20px;flex:1}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:var(--r-md);
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:background .24s var(--ease),color .24s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--c-ink-3)}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-ink)}
.nav-item:hover i{color:var(--c-brand)}
.nav-item.is-active{background:#F0ECFF;color:var(--c-brand);font-weight:600}
.nav-item.is-active i{color:var(--c-brand)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--c-brand-grad);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line)}
.side-note{margin-top:12px;font-size:12px;line-height:1.6;color:var(--c-ink-3)}

/* ================= 5. 移动端顶栏与抽屉 ================= */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:50;height:56px;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line);
}
.mobile-bar .brand{padding:0;border:0}
.mobile-bar .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:14px}
.mobile-bar .brand-text strong{font-size:14px}
.mobile-bar .brand-text span{font-size:11px}
.burger{width:42px;height:42px;display:grid;place-items:center;border-radius:var(--r-md);background:var(--c-surface-2);color:var(--c-ink);font-size:16px}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:288px;max-width:84vw;
  background:#fff;z-index:90;padding:22px 16px;display:flex;flex-direction:column;
  transform:translateX(-102%);transition:transform .28s var(--ease);
  box-shadow:0 0 40px rgba(22,24,46,.18);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer .nav-list{margin-top:18px}
.drawer .nav-item{height:52px;font-size:15px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,24,46,.45);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ================= 6. 按钮与标签 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary{background:var(--c-brand-grad);color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 46px rgba(107,78,255,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border:1px solid var(--c-brand);color:var(--c-brand)}
.btn-ghost:hover{background:#F0ECFF;color:var(--c-brand-deep)}
.btn-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-ink-2)}
.btn-outline:hover{background:var(--c-surface-2);color:var(--c-ink);border-color:rgba(107,78,255,.35)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{filter:saturate(.6);opacity:.7;pointer-events:none}

.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
}
.pill-purple{background:rgba(107,78,255,.12);color:var(--c-brand-deep)}
.pill-cyan{background:rgba(22,214,192,.15);color:#0E9C8C}
.pill-orange{background:rgba(255,107,74,.14);color:#D9482A}

/* ================= 7. 倒计时通栏 ================= */
.countdown-bar{
  position:relative;overflow:hidden;display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  padding:16px 24px;margin-bottom:24px;border-radius:var(--r-lg);
  background:#16182E;box-shadow:var(--sh-2);
}
.countdown-bar::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--c-brand-grad)}
.cd-title{display:flex;align-items:center;gap:10px;color:#fff;font-size:15px;font-weight:600}
.cd-title .dot{width:8px;height:8px;border-radius:50%;background:var(--c-brand-2);box-shadow:0 0 0 4px rgba(22,214,192,.18)}
.cd-title em{font-style:normal;font-size:12px;font-weight:400;color:#8B90AB}
.cd-clock{display:flex;align-items:center;gap:6px;margin-left:auto}
.cd-unit{min-width:56px;padding:6px 8px;border-radius:10px;background:rgba(255,255,255,.08);text-align:center}
.cd-unit b{display:block;font-size:24px;font-weight:700;line-height:1.2;color:var(--c-accent);font-variant-numeric:tabular-nums}
.cd-unit span{font-size:11px;color:#B9BDD4}
.cd-colon{font-size:18px;font-weight:700;color:rgba(255,255,255,.45);animation:cd-blink 1s steps(1) infinite}
@keyframes cd-blink{0%,49%{opacity:1}50%,100%{opacity:.2}}
.cd-status{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);background:rgba(22,214,192,.16);color:#7BF3E6;font-size:12px;font-weight:600}
.cd-status::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-brand-2)}
.cd-note{font-size:12px;color:#8B90AB;max-width:210px;line-height:1.5}

/* ================= 8. Hero ================= */
.hero{
  position:relative;overflow:hidden;display:flex;align-items:center;
  min-height:440px;padding:56px;border-radius:var(--r-xl);
  background-image:linear-gradient(115deg,rgba(107,78,255,.92) 0%,rgba(107,78,255,.78) 46%,rgba(22,214,192,.72) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  box-shadow:var(--sh-2);
}
.hero-inner{position:relative;z-index:2;max-width:680px;color:#fff}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;margin-bottom:20px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3);
  font-size:13px;font-weight:500;color:#fff;
}
.hero h1{font-size:clamp(26px,3.4vw,42px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:#fff}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.92);max-width:580px}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.hero .btn-ghost{background:rgba(255,255,255,.94);border-color:transparent;color:var(--c-brand)}
.hero .btn-ghost:hover{background:#fff;color:var(--c-brand-deep)}
.hero-stats{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
.stat{
  min-width:152px;padding:14px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(8px);
}
.stat b{display:block;font-size:28px;font-weight:700;line-height:1.2;color:#fff;font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:rgba(255,255,255,.86)}

/* ================= 9. 卖点交错卡 ================= */
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.point-card{
  display:flex;gap:18px;padding:28px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.point-card:nth-child(even){margin-top:32px}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35)}
.point-num{
  font-size:28px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;
  background:var(--c-brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  flex:0 0 auto;
}
.point-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(107,78,255,.1);color:var(--c-brand);font-size:16px;margin-bottom:14px;
}
.point-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px}
.point-card p{font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ================= 10. 图墙 ================= */
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:172px;gap:18px}
.gallery-item{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--c-surface-2);
}
.gallery-item:first-child{grid-column:span 2;grid-row:span 2}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.gallery-item:hover img{transform:scale(1.04)}
.gallery-item::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(107,78,255,0);transition:box-shadow .24s var(--ease);
}
.gallery-item:hover::after{box-shadow:inset 0 0 0 1px rgba(107,78,255,.6)}
.gallery-tag{
  position:absolute;left:14px;bottom:14px;height:24px;padding:0 12px;
  display:inline-flex;align-items:center;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);color:var(--c-brand);
  font-size:12px;font-weight:600;transition:transform .24s var(--ease);
}
.gallery-item:hover .gallery-tag{transform:translateY(-4px)}

/* ================= 11. 最新信息卡片 ================= */
.news-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35)}
.news-thumb{aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{display:flex;flex-direction:column;gap:10px;padding:20px;flex:1}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;line-height:1.8;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-ink-3);
}
.news-foot .more{font-size:13px;font-weight:600;color:var(--c-brand)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:64px 24px;text-align:center;
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.empty-state i{font-size:48px;color:#C9CEE6}
.empty-state p{font-size:15px;color:var(--c-ink-2)}

/* ================= 12. CTA 大卡与表单 ================= */
.cta-card{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  padding:48px;border-radius:var(--r-xl);
  background:var(--c-brand-grad);box-shadow:var(--sh-brand);
}
.cta-card::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
  border-radius:50%;background:rgba(255,255,255,.12);
}
.cta-copy{position:relative;z-index:2;color:#fff}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;color:#fff}
.cta-copy p{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.92);max-width:440px}
.cta-badges{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.cta-badges span{
  height:28px;padding:0 14px;display:inline-flex;align-items:center;
  border-radius:var(--r-pill);background:rgba(255,255,255,.2);
  font-size:12px;font-weight:600;color:#fff;
}
.cta-form{
  position:relative;z-index:2;padding:24px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(8px);
}
.field{margin-bottom:14px}
.field label{display:block;margin-bottom:6px;font-size:13px;color:rgba(255,255,255,.82)}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:12px;
  border:1px solid transparent;background:#fff;font-size:15px;color:var(--c-ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(107,78,255,.18)}
.field.is-error input{border-color:var(--c-warn);box-shadow:0 0 0 3px rgba(229,72,77,.16)}
.field .err{display:none;margin-top:6px;font-size:13px;color:#FFD7D5}
.field.is-error .err{display:block}
.form-tip{margin-top:12px;font-size:13px;line-height:1.7;color:rgba(255,255,255,.82)}

/* ================= 13. FAQ ================= */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start}
.faq-aside h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3}
.faq-aside p{margin-top:14px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}
.faq-aside .btn{margin-top:20px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  position:relative;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item.is-open{border-color:rgba(107,78,255,.35);box-shadow:var(--sh-1)}
.faq-item.is-open::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-brand-grad);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--c-ink);text-align:left;
}
.faq-q i{color:var(--c-brand);font-size:14px;transition:transform .2s var(--ease)}
.faq-item.is-open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-item.is-open .faq-a{max-height:400px}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ================= 14. 流程时间线（首页辅助区块） ================= */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.flow-card{
  position:relative;padding:24px;border-radius:var(--r-lg);
  background:var(--c-surface);border:1px solid var(--c-line);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35)}
.flow-step{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:var(--c-brand-grad);color:#fff;font-size:14px;font-weight:700;
  box-shadow:0 8px 18px rgba(107,78,255,.28);margin-bottom:14px;
}
.flow-card h3{font-size:16px;font-weight:600;margin-bottom:8px}
.flow-card p{font-size:14px;line-height:1.75;color:var(--c-ink-2)}

/* ================= 15. 页脚 ================= */
.site-footer{
  margin-top:72px;padding:56px 40px 0;
  background:#16182E;border-radius:var(--r-xl);overflow:hidden;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col a{color:#B9BDD4;font-size:14px;line-height:1.9}
.footer-col a:hover{color:#fff}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:12px;font-size:15px}
.footer-brand strong{color:#fff;font-size:15px;font-weight:700;display:block;line-height:1.3}
.footer-brand span{display:block;color:#8E93B2;font-size:12px}
.footer-col p{font-size:14px;line-height:1.9;color:#8E93B2}
.footer-bottom{
  margin-top:40px;padding:22px 0 26px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8E93B2;
}
.footer-bottom a{color:#8E93B2}
.footer-bottom a:hover{color:#fff}

/* ================= 16. 工具类 ================= */
.mt-0{margin-top:0}
.text-center{text-align:center}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ================= 17. 媒体查询 ================= */
@media (max-width:1199px){
  .site-shell{grid-template-columns:200px minmax(0,1fr)}
  .content-area{padding:20px 24px 0}
  .hero{padding:48px}
  .footer-grid{gap:32px}
}
@media (max-width:991px){
  .site-shell{grid-template-columns:minmax(0,1fr)}
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .content-area{padding:16px 24px 0}
  .section{padding:56px 0}
  .hero{min-height:380px;padding:40px}
  .point-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-card{grid-template-columns:1fr;gap:28px;padding:36px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cd-clock{margin-left:0}
}
@media (max-width:767px){
  .content-area{padding:12px 16px 0}
  .section{padding:44px 0}
  .countdown-bar{padding:14px 16px;gap:12px;border-radius:var(--r-md)}
  .cd-unit{min-width:46px;padding:5px 6px}
  .cd-unit b{font-size:18px}
  .cd-note{max-width:none}
  .hero{min-height:320px;padding:28px 22px;border-radius:var(--r-lg)}
  .hero h1{font-size:26px}
  .hero-sub{font-size:15px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:12px;margin-top:26px}
  .stat{min-width:calc(50% - 6px);padding:12px 16px}
  .stat b{font-size:22px}
  .point-grid{grid-template-columns:1fr;gap:16px}
  .point-card:nth-child(even){margin-top:0}
  .point-card{padding:22px}
  .gallery{grid-template-columns:1fr;grid-auto-rows:200px;gap:14px}
  .gallery-item:first-child{grid-column:span 1;grid-row:span 1}
  .news-body{padding:18px}
  .cta-card{padding:26px 20px;border-radius:var(--r-lg)}
  .cta-form{padding:20px}
  .flow-grid{grid-template-columns:1fr}
  .site-footer{margin-top:44px;padding:40px 22px 0;border-radius:var(--r-lg)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:479px){
  .brand-text strong{font-size:14px}
  .hero{padding:24px 18px}
  .hero h1{font-size:22px}
  .cd-title{font-size:13px}
  .cd-clock{flex-wrap:wrap;gap:4px}
  .cd-unit{min-width:42px}
  .cd-unit b{font-size:16px}
  .cd-unit span{font-size:10px}
  .stat{min-width:100%}
  .btn{height:44px;padding:0 20px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .cd-colon{animation:none;opacity:1}
}

/* roulang page: article */
:root{
  --c-brand:#6B4EFF;
  --c-brand-deep:#5A3BE0;
  --c-brand-2:#16D6C0;
  --c-brand-grad:linear-gradient(115deg,#7B4DFF 0%,#6B4EFF 42%,#16D6C0 100%);
  --c-accent:#FF6B4A;
  --c-ink:#16182E;
  --c-ink-2:#5B6081;
  --c-ink-3:#8B90AB;
  --c-bg:#F5F6FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF0FA;
  --c-line:#E4E7F3;
  --c-ok:#22C55E;
  --c-warn:#E5484D;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(22,24,46,.06);
  --sh-2:0 10px 30px rgba(22,24,46,.09);
  --sh-brand:0 16px 40px rgba(107,78,255,.22);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color .2s ease;}
a:hover,a:focus{color:var(--c-brand-deep);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px;}

/* Foundation 覆盖 */
body,button,input,select,textarea,.button{font-family:var(--font-sans);}
a:not(.btn):not(.nav-item):not(.brand):not(.toc-link):not(.crumb-link),
.prose a{color:var(--c-brand);}
a:not(.btn):not(.nav-item):not(.brand):hover{color:var(--c-brand-deep);}
.button,.button.primary,.button.secondary{background:var(--c-brand-grad);border:none;border-radius:var(--r-pill);}
.accordion,.accordion-item{border:none;background:transparent;}

/* 布局 */
.layout{display:flex;align-items:flex-start;min-height:100vh;}
.container{max-width:var(--container);margin:0 auto;padding:0 32px;width:100%;}
.container-wide{width:100%;padding:0 32px;}

/* 侧栏导航 */
.sidebar{
  width:260px;flex:0 0 260px;
  position:sticky;top:0;height:100vh;
  padding:28px 20px 24px;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:24px;
  z-index:70;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:var(--r-md);
  background:var(--c-brand-grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--sh-brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.28;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.brand-text span{font-size:13px;color:var(--c-ink-2);}
.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:var(--r-md);
  font-size:14.5px;font-weight:500;color:var(--c-ink-2);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--c-ink-3);transition:color .2s ease;}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-ink);}
.nav-item:hover i{color:var(--c-brand);}
.nav-item.is-active{background:#F1EDFF;color:var(--c-brand);font-weight:600;}
.nav-item.is-active i{color:var(--c-brand);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:var(--r-pill);background:var(--c-brand-grad);
}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.sidebar-note{font-size:12px;line-height:1.6;color:var(--c-ink-3);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s ease,background .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-brand-grad);color:#fff;box-shadow:var(--sh-brand);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 46px rgba(107,78,255,.3);color:#fff;}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-brand);}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink-2);}
.btn-ghost:hover{border-color:rgba(107,78,255,.45);color:var(--c-brand);background:#F7F5FF;}
.btn-outline{background:#fff;border-color:var(--c-brand);color:var(--c-brand);}
.btn-outline:hover{background:#F0ECFF;color:var(--c-brand-deep);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}

/* 移动端顶栏 */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:65;
  height:56px;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-bar .brand-text strong{font-size:15px;}
.mobile-toggle{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);display:flex;align-items:center;justify-content:center;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,24,46,.45);
  opacity:0;visibility:hidden;transition:opacity .24s ease;z-index:68;
}
.drawer-mask.is-show{opacity:1;visibility:visible;}

/* 主区 */
.main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;}

/* 面包屑 */
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:28px 0 0;font-size:14px;color:var(--c-ink-3);
}
.crumb .sep{color:#C7CBDD;}
.crumb-link{color:var(--c-ink-2);}
.crumb-link:hover{color:var(--c-brand);}
.crumb .current{
  color:var(--c-ink-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* 文章头 */
.article-head{
  margin-top:20px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-xl);padding:36px 40px 32px;box-shadow:var(--sh-1);
  position:relative;overflow:hidden;
}
.article-head::after{
  content:"";position:absolute;right:-60px;top:-70px;width:220px;height:220px;border-radius:50%;
  background:var(--c-brand-grad);opacity:.09;filter:blur(6px);
}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.pill-purple{background:rgba(107,78,255,.12);color:var(--c-brand);}
.pill-cyan{background:rgba(22,214,192,.14);color:#0E9E8E;}
.pill-orange{background:rgba(255,107,74,.13);color:#D94724;}
.article-head h1{
  margin:16px 0 18px;font-size:clamp(26px,3.4vw,42px);line-height:1.25;
  font-weight:700;letter-spacing:-.01em;color:var(--c-ink);position:relative;
}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--c-ink-3);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#CFD3E4;}
.meta-badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--c-surface-2);color:var(--c-ink-2);
  font-size:12px;font-weight:600;
}

/* 文章主体栅格 */
.article-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:36px;
  align-items:start;margin-top:28px;padding-bottom:8px;
}
.article-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:40px;box-shadow:var(--sh-1);min-width:0;
}
.prose{max-width:800px;font-size:17px;line-height:1.9;color:var(--c-ink);overflow-wrap:break-word;}
.prose p{margin:0 0 1.15em;}
.prose h2{
  font-size:clamp(20px,2.1vw,26px);line-height:1.4;font-weight:700;
  margin:2em 0 .8em;padding-left:14px;border-left:4px solid var(--c-brand);border-radius:2px;
}
.prose h3{font-size:19px;line-height:1.5;font-weight:600;margin:1.6em 0 .6em;color:var(--c-ink);}
.prose h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:4px;}
.prose ul li{position:relative;padding-left:20px;margin-bottom:.5em;}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--c-brand);opacity:.85;
}
.prose ol{counter-reset:li;}
.prose ol li{position:relative;padding-left:28px;margin-bottom:.5em;counter-increment:li;}
.prose ol li::before{
  content:counter(li);position:absolute;left:0;top:.28em;width:20px;height:20px;
  border-radius:var(--r-pill);background:rgba(107,78,255,.12);color:var(--c-brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.prose blockquote{
  background:#F2EEFF;border-left:3px solid var(--c-brand);border-radius:var(--r-md);
  padding:20px 22px;margin:1.4em 0;color:var(--c-ink-2);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:16px;box-shadow:var(--sh-1);margin:1.4em auto;height:auto;}
.prose table{
  display:block;overflow-x:auto;width:100%;border-collapse:collapse;
  font-size:15px;margin:1.4em 0;border:1px solid var(--c-line);border-radius:var(--r-md);
}
.prose thead{background:#F5F2FF;}
.prose th,.prose td{
  padding:12px 16px;text-align:left;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
.prose th{font-weight:600;color:var(--c-ink);}
.prose tr:last-child td{border-bottom:none;}
.prose strong{font-weight:700;color:var(--c-ink);}
.prose code{
  background:var(--c-surface-2);padding:2px 6px;border-radius:6px;
  font-size:14px;color:var(--c-brand-deep);
}

/* 目录 */
.toc-box{
  position:sticky;top:28px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:20px 18px;box-shadow:var(--sh-1);
}
.toc-box h4{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  position:relative;display:block;padding:7px 0 7px 12px;
  font-size:14px;line-height:1.5;color:var(--c-ink-2);
  border-left:2px solid transparent;transition:all .2s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-link:hover{color:var(--c-brand);}
.toc-link.is-current{color:var(--c-brand);font-weight:600;border-left-color:var(--c-brand);background:#F7F5FF;}
.toc-mobile{display:none;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:14px 18px;margin-top:20px;}
.toc-mobile summary{font-size:15px;font-weight:600;cursor:pointer;color:var(--c-ink);}
.toc-mobile .toc-list{margin-top:12px;}

/* 文末 */
.article-foot{margin-top:32px;}
.tag-group{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag-group .tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-ink-2);font-size:13px;
  transition:all .2s ease;
}
.tag-group .tag:hover{background:#F1EDFF;color:var(--c-brand);}

.section-block{margin-top:36px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px;
}
.section-head h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--c-ink);}
.section-head p{font-size:14px;color:var(--c-ink-3);margin-top:6px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease,border-color .24s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35);}
.card-thumb{position:relative;aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--c-ink);}
.card-body p{font-size:14px;line-height:1.75;color:var(--c-ink-2);}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-ink-3);margin-top:auto;padding-top:10px;border-top:1px solid var(--c-line);
}
.card-meta a{font-weight:600;font-size:13px;}

.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-lg);background:var(--c-surface);
  padding:48px 24px;text-align:center;
}
.empty-state i{font-size:44px;color:#C9CEE4;display:block;margin-bottom:14px;}
.empty-state p{font-size:15px;color:var(--c-ink-3);margin-bottom:18px;}

.mini-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.mini-list li{border-bottom:1px solid var(--c-line);}
.mini-list li:last-child{border-bottom:none;}
.mini-list a{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;font-size:15px;color:var(--c-ink);transition:background .2s ease;
}
.mini-list a:hover{background:#F7F5FF;color:var(--c-brand);}
.mini-list .mini-time{font-size:13px;color:var(--c-ink-3);flex:0 0 auto;}

.back-row{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px;}

/* 页脚 */
.site-footer{
  background:var(--c-ink);color:#B9BDD4;margin-top:64px;
  padding:64px 32px 0;
}
.footer-grid{
  max-width:var(--container);margin:0 auto;width:100%;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col p{font-size:14px;line-height:1.9;color:#B9BDD4;}
.footer-col ul{display:flex;flex-direction:column;gap:8px;}
.footer-col ul a{font-size:14px;line-height:1.9;color:#B9BDD4;}
.footer-col ul a:hover{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{width:40px;height:40px;flex:0 0 40px;}
.footer-brand strong{display:block;font-size:15px;color:#fff;line-height:1.3;}
.footer-brand span span{display:block;font-size:12px;color:#9BA0BC;}
.footer-bottom{
  max-width:var(--container);margin:40px auto 0;padding:20px 0 28px;width:100%;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B90AB;
}

/* 断点 */
@media (max-width:1199px){
  .sidebar{width:200px;flex:0 0 200px;padding:24px 14px 20px;}
  .brand-text strong{font-size:15px;}
  .nav-item{padding:0 12px;font-size:14px;}
  .article-grid{grid-template-columns:minmax(0,1fr) 200px;gap:28px;}
  .article-body{padding:34px;}
}
@media (max-width:991px){
  .sidebar{
    position:fixed;top:0;left:0;width:272px;flex:0 0 272px;height:100%;
    transform:translateX(-100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
    box-shadow:0 20px 50px rgba(22,24,46,.2);
  }
  .sidebar.is-open{transform:translateX(0);}
  .mobile-bar{display:flex;}
  .layout{display:block;}
  .container{padding:0 24px;}
  .container-wide{padding:0 24px;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc-box{display:none;}
  .toc-mobile{display:block;}
  .article-head{padding:30px 28px 26px;}
  .article-body{padding:30px 26px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-footer{padding:56px 24px 0;}
  .crumb .current{max-width:200px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .container-wide{padding:0 16px;}
  .article-head{padding:24px 20px 22px;border-radius:var(--r-lg);}
  .article-body{padding:22px 18px;border-radius:var(--r-lg);}
  .prose{font-size:16px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:44px 16px 0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
  .back-row .btn,.mini-list a .btn{width:auto;}
  .crumb{padding-top:18px;}
  .crumb .current{max-width:150px;}
  .meta-row{gap:8px;}
}
@media (max-width:479px){
  .article-head h1{font-size:24px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:6px;}
  .mini-list a{flex-direction:column;align-items:flex-start;gap:6px;}
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root{
  --c-brand:#6B4EFF;
  --c-brand-deep:#5A3BE0;
  --c-brand-2:#16D6C0;
  --c-brand-grad:linear-gradient(115deg,#7B4DFF 0%,#6B4EFF 42%,#16D6C0 100%);
  --c-accent:#FF6B4A;
  --c-ink:#16182E;
  --c-ink-2:#5B6081;
  --c-ink-3:#8B90AB;
  --c-bg:#F5F6FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF0FA;
  --c-line:#E4E7F3;
  --c-ok:#22C55E;
  --c-warn:#E5484D;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(22,24,46,.06);
  --sh-2:0 10px 30px rgba(22,24,46,.09);
  --sh-brand:0 16px 40px rgba(107,78,255,.22);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --container:1200px;
  --side-w:232px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ===================== reset 与 Foundation 覆盖 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--c-brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-brand-deep);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--c-ink);}
h1{font-size:clamp(26px,3.4vw,42px);line-height:1.25;letter-spacing:-.01em;}
h2{font-size:clamp(22px,2.4vw,32px);}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:8px;}
body,.button,button,input,textarea,select{font-family:var(--font-sans);}
a.button,.button{background:var(--c-brand);border-radius:var(--r-pill);}
.button:hover,.button:focus{background:var(--c-brand-deep);}

/* ===================== 布局骨架 ===================== */
.shell{
  max-width:1440px;
  margin:0 auto;
  padding:24px 32px 24px;
  display:grid;
  grid-template-columns:var(--side-w) minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.main-col{min-width:0;display:flex;flex-direction:column;}
.section{margin-top:64px;}
.section:first-child{margin-top:0;}

/* ===================== 左侧导航 ===================== */
.side-nav{
  position:sticky;
  top:24px;
  align-self:start;
  height:calc(100vh - 48px);
  display:flex;
  flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-xl);
  padding:22px 16px 20px;
  box-shadow:var(--sh-1);
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:12px;padding:2px 8px 20px;border-bottom:1px solid var(--c-line);}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  border-radius:14px;
  background:var(--c-brand-grad);
  display:grid;place-items:center;
  color:#fff;font-size:17px;
  box-shadow:var(--sh-brand);
}
.brand-text strong{display:block;font-size:16px;line-height:1.25;font-weight:700;color:var(--c-ink);}
.brand-text span{display:block;font-size:12px;letter-spacing:.14em;color:var(--c-ink-3);}
.nav-list{display:flex;flex-direction:column;gap:6px;margin-top:18px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;
  border-radius:var(--r-md);
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:background .24s var(--ease),color .24s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--c-ink-3);transition:color .24s var(--ease);}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-ink);}
.nav-item:hover i{color:var(--c-brand);}
.nav-item.is-active{background:#F1EDFF;color:var(--c-brand);font-weight:600;}
.nav-item.is-active i{color:var(--c-brand);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--c-brand-grad);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line);}
.side-foot .btn{width:100%;height:44px;font-size:15px;padding:0 12px;}
.side-note{margin:10px 2px 0;font-size:12px;line-height:1.6;color:var(--c-ink-3);}

/* ===================== 移动端顶栏与抽屉 ===================== */
.topbar{
  display:none;
  align-items:center;justify-content:space-between;
  height:56px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;color:var(--c-ink);}
.topbar-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:11px;font-size:14px;}
.topbar-toggle{
  width:42px;height:42px;border:1px solid var(--c-line);background:#fff;border-radius:12px;
  display:grid;place-items:center;color:var(--c-ink);cursor:pointer;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,24,46,.45);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
  z-index:110;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:308px;max-width:86vw;
  background:#fff;z-index:120;padding:22px 18px;overflow-y:auto;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  box-shadow:-12px 0 40px rgba(22,24,46,.18);
}
.drawer.is-open{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line);}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink);cursor:pointer;}
.drawer .nav-list{margin-top:14px;}
.drawer .nav-item{height:52px;font-size:16px;}
.drawer-foot{margin-top:24px;padding-top:18px;border-top:1px solid var(--c-line);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-pill);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary{background:var(--c-brand-grad);color:#fff;box-shadow:var(--sh-brand);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 46px rgba(107,78,255,.32);}
.btn-primary:active{transform:translateY(0);background:var(--c-brand-deep);}
.btn-outline{background:#fff;color:var(--c-brand);border-color:var(--c-brand);}
.btn-outline:hover{background:#F0ECFF;color:var(--c-brand-deep);}
.btn-line{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.55);}
.btn-line:hover{background:rgba(255,255,255,.22);color:#fff;}
.btn-white{background:#fff;color:var(--c-brand-deep);}
.btn-white:hover{color:var(--c-brand-deep);transform:translateY(-2px);box-shadow:0 16px 34px rgba(22,24,46,.18);}
.btn-sm{height:40px;padding:0 20px;font-size:15px;}

/* ===================== Hero ===================== */
.hero{
  position:relative;
  min-height:430px;
  border-radius:var(--r-xl);
  overflow:hidden;
  display:flex;align-items:flex-end;
  padding:52px 48px;
  background:#16182E url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  box-shadow:var(--sh-2);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:var(--c-brand-grad);
  opacity:.84;
  mix-blend-mode:multiply;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(22,24,46,.18) 0%,rgba(22,24,46,.62) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:740px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.34);
  color:#fff;font-size:13px;font-weight:600;
  backdrop-filter:blur(8px);
}
.hero h1{color:#fff;margin-top:18px;max-width:700px;}
.hero-sub{margin:16px 0 0;font-size:17px;color:rgba(255,255,255,.94);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.stat{
  min-width:132px;
  padding:12px 18px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(8px);
}
.stat b{
  display:block;
  font-size:28px;font-weight:700;line-height:1.15;color:#fff;
  font-variant-numeric:tabular-nums;
}
.stat span{font-size:13px;color:rgba(255,255,255,.88);}

/* ===================== 板块标题 ===================== */
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:28px;flex-wrap:wrap;}
.sec-head .sec-text{max-width:680px;}
.sec-head p{margin:10px 0 0;font-size:15px;color:var(--c-ink-2);}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-brand);
  letter-spacing:.08em;margin-bottom:10px;
}
.sec-eyebrow::before{content:"";width:18px;height:3px;border-radius:3px;background:var(--c-brand-grad);}

/* ===================== 卡片 ===================== */
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35);}
.card h3{margin-bottom:10px;}
.card p:last-child{margin-bottom:0;}

/* 标签胶囊 */
.tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-purple{background:rgba(107,78,255,.12);color:#5A3BE0;}
.tag-teal{background:rgba(22,214,192,.16);color:#0E9E8E;}
.tag-orange{background:rgba(255,107,74,.14);color:#D9482A;}

/* ===================== 入口类型对照 ===================== */
.entry-grid{margin-top:4px;}
.entry-card{display:flex;flex-direction:column;height:100%;}
.entry-card .entry-icon{
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:#F1EDFF;color:var(--c-brand);font-size:18px;margin-bottom:16px;
}
.entry-card h3{margin-bottom:8px;}
.entry-card p{font-size:15px;color:var(--c-ink-2);}
.entry-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.entry-list li{
  position:relative;padding-left:20px;
  font-size:15px;color:var(--c-ink-2);line-height:1.8;
}
.entry-list li::before{
  content:"";position:absolute;left:2px;top:11px;
  width:8px;height:8px;border-radius:50%;
  background:var(--c-brand-grad);
}
.entry-note{
  margin-top:20px;
  border-radius:var(--r-lg);
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  padding:20px 24px;
  font-size:15px;color:var(--c-ink-2);
}
.entry-note strong{color:var(--c-ink);}

/* ===================== 时间线 ===================== */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:27px;top:8px;bottom:26px;width:2px;
  background:linear-gradient(180deg,rgba(107,78,255,.42),rgba(22,214,192,.28));
}
.step{
  position:relative;
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  column-gap:20px;
  padding-bottom:24px;
}
.step:last-child{padding-bottom:0;}
.step-num{
  position:relative;z-index:1;
  width:36px;height:36px;margin:16px auto 0;
  border-radius:50%;
  background:var(--c-brand-grad);
  color:#fff;font-size:15px;font-weight:700;
  display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
  box-shadow:0 6px 18px rgba(107,78,255,.32);
}
.step:first-child .step-num{box-shadow:0 0 0 6px rgba(107,78,255,.14),0 8px 22px rgba(107,78,255,.36);}
.step-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:24px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 220px;
  gap:24px;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.step-body:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35);}
.step-main h3{margin-bottom:8px;}
.step-main p{font-size:15px;color:var(--c-ink-2);margin-bottom:0;}
.step-media{
  border-radius:var(--r-md);
  overflow:hidden;
  aspect-ratio:3/2;
  background:var(--c-surface-2);
}
.step-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.step-body:hover .step-media img{transform:scale(1.04);}

/* ===================== 准备清单 ===================== */
.prep-grid{margin-top:4px;}
.prep-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:22px 24px;
  height:100%;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.prep-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35);}
.prep-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;font-size:17px;
  background:rgba(22,214,192,.16);color:#0E9E8E;
}
.prep-icon.purple{background:rgba(107,78,255,.12);color:var(--c-brand);}
.prep-icon.orange{background:rgba(255,107,74,.14);color:#D9482A;}
.prep-item h4{margin-bottom:6px;}
.prep-item p{margin-bottom:0;font-size:15px;color:var(--c-ink-2);}
.prep-wide{grid-column:1/-1;}

/* ===================== 提示卡 ===================== */
.tips-list{display:flex;flex-direction:column;gap:14px;}
.tip{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:4px solid transparent;
  border-radius:var(--r-md);
  padding:20px 22px;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.tip:hover{border-color:rgba(107,78,255,.35);border-left-color:var(--c-brand);box-shadow:var(--sh-2);transform:translateX(4px);}
.tip i{font-size:17px;color:var(--c-brand);margin-top:4px;}
.tip h4{margin-bottom:6px;}
.tip p{margin-bottom:0;font-size:15px;color:var(--c-ink-2);}

/* ===================== CTA ===================== */
.cta-card{
  position:relative;
  overflow:hidden;
  background:var(--c-brand-grad);
  border-radius:var(--r-xl);
  padding:44px 48px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:32px;
  align-items:center;
  box-shadow:var(--sh-brand);
}
.cta-card::after{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:rgba(255,255,255,.14);
}
.cta-card h2{color:#fff;}
.cta-card p{margin:12px 0 0;color:rgba(255,255,255,.92);font-size:15px;max-width:620px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}
.cta-text{position:relative;z-index:2;}

/* ===================== 页脚 ===================== */
.site-footer{
  margin-top:64px;
  background:#16182E;
  border-radius:var(--r-xl);
  padding:56px 48px 0;
  color:#B9BDD4;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{width:40px;height:40px;flex:0 0 40px;border-radius:12px;font-size:16px;}
.footer-brand strong{display:block;color:#fff;font-size:15px;line-height:1.3;}
.footer-brand > span > span{display:block;font-size:12px;letter-spacing:.14em;color:#8B90AB;}
.footer-col p{font-size:14px;line-height:1.9;color:#B9BDD4;margin:0;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col ul li a{font-size:14px;line-height:1.9;color:#B9BDD4;}
.footer-col ul li a:hover{color:#fff;}
.footer-bottom{
  margin-top:42px;
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B90AB;
}

/* ===================== 工具类 ===================== */
.gutter-20{margin-left:-10px !important;margin-right:-10px !important;}
.gutter-20 > .cell{padding-left:10px;padding-right:10px;margin-bottom:20px;}
.gutter-24{margin-left:-12px !important;margin-right:-12px !important;}
.gutter-24 > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.mb-0{margin-bottom:0 !important;}

/* ===================== 响应式 ===================== */
@media (max-width:1199px){
  .shell{grid-template-columns:200px minmax(0,1fr);gap:24px;padding:20px 24px 20px;}
  .side-nav{padding:18px 12px;}
  .nav-item{font-size:14px;padding:0 12px;}
  .hero{padding:44px 36px;}
  .step-body{grid-template-columns:minmax(0,1fr) 190px;gap:20px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .site-footer{padding:48px 36px 0;}
}

@media (max-width:991px){
  .shell{grid-template-columns:minmax(0,1fr);gap:0;padding:0 0 24px;}
  .side-nav{display:none;}
  .main-col{padding:0 16px;}
  .topbar{display:flex;margin:0 -16px 22px;padding:0 16px;position:sticky;top:0;z-index:100;}
  .hero{min-height:380px;padding:36px 28px;border-radius:var(--r-lg);}
  .hero-sub{font-size:16px;}
  .section{margin-top:52px;}
  .step-body{grid-template-columns:minmax(0,1fr);gap:18px;}
  .step-media{max-width:100%;}
  .cta-card{grid-template-columns:minmax(0,1fr);padding:36px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .site-footer{padding:44px 28px 0;border-radius:var(--r-lg);}
}

@media (max-width:767px){
  .hero{min-height:340px;padding:32px 22px;}
  .hero h1{font-size:26px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:10px;}
  .stat{flex:1 1 calc(50% - 5px);min-width:0;padding:10px 14px;}
  .stat b{font-size:22px;}
  .step{grid-template-columns:44px minmax(0,1fr);column-gap:14px;}
  .timeline::before{left:21px;}
  .step-num{width:32px;height:32px;font-size:14px;margin-top:14px;}
  .step-body{padding:20px;}
  .cta-card{padding:30px 22px;border-radius:var(--r-lg);}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}

@media (max-width:479px){
  .main-col{padding:0 12px;}
  .topbar{margin:0 -12px 18px;padding:0 12px;}
  .hero{padding:26px 18px;min-height:320px;}
  .hero h1{font-size:24px;}
  .hero-stats .stat{flex:1 1 100%;}
  .section{margin-top:44px;}
  .card{padding:20px;}
  .prep-item{padding:18px;}
  .tip{padding:16px 18px;}
  .site-footer{padding:36px 20px 0;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* roulang page: category2 */
/* ============ 1. 变量 ============ */
:root{
  --c-brand:#6B4EFF;
  --c-brand-deep:#5A3BE0;
  --c-brand-2:#16D6C0;
  --c-brand-grad:linear-gradient(115deg,#7B4DFF 0%,#6B4EFF 42%,#16D6C0 100%);
  --c-accent:#FF6B4A;
  --c-ink:#16182E;
  --c-ink-2:#5B6081;
  --c-ink-3:#8B90AB;
  --c-bg:#F5F6FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF0FA;
  --c-line:#E4E7F3;
  --c-ok:#22C55E;
  --c-warn:#E5484D;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(22,24,46,.06);
  --sh-2:0 10px 30px rgba(22,24,46,.09);
  --sh-brand:0 16px 40px rgba(107,78,255,.22);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
}

/* ============ 2. reset 与 Foundation 覆盖 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--c-brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-brand-deep);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
h1,h2,h3,h4{font-weight:700;line-height:1.3;color:var(--c-ink);}
body.foundation h1,body.foundation h2{font-family:var(--font-sans);}
.button,button.button{background:var(--c-brand);}
input:focus,textarea:focus,select:focus{outline:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}
.container-wide{max-width:1360px;margin:0 auto;padding:0 32px;}
.container{max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ============ 3. 顶部提示条 ============ */
.notice-bar{
  background:#16182E;
  color:#DADDF0;
  font-size:13px;
  position:relative;
  overflow:hidden;
}
.notice-bar::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-brand-grad);
  opacity:.9;
}
.notice-inner{
  max-width:1360px;margin:0 auto;padding:10px 32px;
  display:flex;align-items:center;gap:14px;justify-content:space-between;flex-wrap:wrap;
}
.notice-inner .nb-left{display:flex;align-items:center;gap:10px;}
.notice-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--c-brand-2);
  box-shadow:0 0 0 4px rgba(22,214,192,.18);
  flex:none;
}
.notice-inner a{color:#fff;border-bottom:1px solid rgba(255,255,255,.35);}

/* ============ 4. 布局骨架 ============ */
.page-shell{
  max-width:1360px;
  margin:0 auto;
  padding:0 32px;
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  gap:32px;
  align-items:start;
}

/* ============ 5. 侧栏导航 ============ */
.side-nav{
  position:sticky;
  top:0;
  align-self:start;
  height:100vh;
  display:flex;
  flex-direction:column;
  padding:24px 0 20px;
  gap:22px;
}
.side-brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--c-brand-grad);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  box-shadow:var(--sh-brand);
  flex:none;
}
.side-brand strong{display:block;font-size:16px;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.side-brand span.brand-sub{display:block;font-size:13px;color:var(--c-ink-3);line-height:1.3;}
.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;
  height:44px;
  display:flex;align-items:center;gap:10px;
  padding:0 14px;
  border-radius:var(--r-md);
  font-size:14.5px;
  font-weight:500;
  color:var(--c-ink-2);
  transition:background .2s ease,color .2s ease;
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--c-ink-3);transition:color .2s ease;}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-ink);}
.nav-item:hover i{color:var(--c-brand);}
.nav-item.is-active{
  background:#F2EEFF;
  color:var(--c-brand);
  font-weight:600;
}
.nav-item.is-active i{color:var(--c-brand);}
.nav-item.is-active::before{
  content:"";
  position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;
  background:var(--c-brand-grad);
}
.side-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.side-note{font-size:12px;line-height:1.6;color:var(--c-ink-3);}

/* ============ 6. 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-brand-grad);
  color:#fff;
  box-shadow:var(--sh-brand);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(107,78,255,.3);color:#fff;}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px rgba(107,78,255,.24);}
.btn-secondary{
  background:#fff;color:var(--c-brand);
  border-color:rgba(107,78,255,.45);
}
.btn-secondary:hover{background:#F0ECFF;color:var(--c-brand-deep);transform:translateY(-2px);}
.btn-ghost{
  background:transparent;color:var(--c-ink-2);
  border-color:var(--c-line);
}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-ink);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.6;filter:saturate(.6);pointer-events:none;}

/* ============ 7. 标签与徽章 ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:rgba(107,78,255,.12);
  color:var(--c-brand-deep);
}
.pill.pill-cyan{background:rgba(22,214,192,.14);color:#0E9C8C;}
.pill.pill-orange{background:rgba(255,107,74,.14);color:#D9472A;}
.pill.pill-gray{background:var(--c-surface-2);color:var(--c-ink-2);}
.badge-row{
  display:flex;flex-wrap:wrap;gap:14px;
  margin-top:26px;
}
.data-badge{
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.7);
  border-radius:var(--r-md);
  padding:12px 18px;
  box-shadow:var(--sh-1);
  min-width:150px;
}
.data-badge b{
  display:block;
  font-size:26px;line-height:1.15;font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--c-ink);
  letter-spacing:-.02em;
}
.data-badge span{font-size:13px;color:var(--c-ink-2);}

/* ============ 8. 页头 Hero ============ */
.page-hero{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  margin-top:24px;
  background-image:
    linear-gradient(115deg,rgba(123,77,255,.9) 0%,rgba(107,78,255,.86) 42%,rgba(22,214,192,.82) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  padding:52px 44px;
  color:#fff;
}
.page-hero::after{
  content:"";
  position:absolute;right:-80px;top:-80px;width:300px;height:300px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 70%);
}
.hero-inner{position:relative;z-index:1;max-width:800px;}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.8);
  margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.9);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span.sep{color:rgba(255,255,255,.5);}
.breadcrumb span.current{color:#fff;font-weight:600;}
.page-hero h1{
  font-size:clamp(26px,3.4vw,42px);
  line-height:1.25;
  letter-spacing:-.01em;
  color:#fff;
}
.hero-lead{
  margin-top:16px;
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.92);
  max-width:640px;
}
.page-hero .data-badge{background:rgba(255,255,255,.92);}

/* ============ 9. 正文容器 ============ */
.main-area{min-width:0;padding-bottom:72px;}
.doc-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:32px;
  margin-top:36px;
  align-items:start;
}
.doc-toc{
  position:sticky;
  top:24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:20px 18px;
  box-shadow:var(--sh-1);
}
.doc-toc h2{
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-3);
  letter-spacing:.04em;
  margin-bottom:12px;
}
.doc-toc ol{display:flex;flex-direction:column;gap:2px;}
.doc-toc a{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--c-ink-2);
  padding:9px 10px;
  border-radius:var(--r-sm);
  border-left:2px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.doc-toc a:hover{background:var(--c-surface-2);color:var(--c-brand);}
.doc-toc a.is-current{
  color:var(--c-brand);
  font-weight:600;
  border-left-color:var(--c-brand);
  background:#F7F5FF;
}
.toc-mobile{display:none;}

.doc-body{display:flex;flex-direction:column;gap:24px;min-width:0;}
.sec-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:30px 32px;
  box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease,transform .24s cubic-bezier(.22,.61,.36,1);
  scroll-margin-top:24px;
}
.sec-card:hover{border-color:rgba(107,78,255,.35);box-shadow:var(--sh-2);transform:translateY(-4px);}
.sec-head{margin-bottom:18px;}
.sec-head h2{
  font-size:clamp(21px,2.2vw,28px);
  letter-spacing:-.01em;
  margin-top:10px;
}
.sec-head p.sec-sub{margin-top:10px;color:var(--c-ink-2);font-size:15px;}
.sec-card p{color:var(--c-ink-2);font-size:16px;line-height:1.85;}
.sec-card p + p{margin-top:1.1em;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
  color:var(--c-brand);
}
.eyebrow::before{
  content:"";width:18px;height:2px;border-radius:2px;background:var(--c-brand-grad);
}
.sec-figure{
  margin-top:22px;
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
}
.sec-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.sec-figure figcaption{
  font-size:13px;color:var(--c-ink-3);
  padding:10px 14px;text-align:center;background:#fff;
}

/* ============ 10. 要点列表 ============ */
.point-list{display:flex;flex-direction:column;gap:12px;margin-top:20px;}
.point-list li{
  display:flex;gap:12px;
  font-size:15px;line-height:1.8;color:var(--c-ink-2);
}
.point-list li i{
  color:var(--c-brand);
  font-size:14px;
  margin-top:5px;
  flex:none;
}
.point-list strong{color:var(--c-ink);font-weight:600;}

.step-list{counter-reset:st;display:flex;flex-direction:column;gap:14px;margin-top:20px;}
.step-list li{
  counter-increment:st;
  position:relative;
  padding:16px 18px 16px 62px;
  background:var(--c-surface-2);
  border-radius:var(--r-md);
  font-size:15px;line-height:1.8;color:var(--c-ink-2);
}
.step-list li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;left:16px;top:15px;
  width:30px;height:30px;border-radius:50%;
  background:var(--c-brand-grad);
  color:#fff;font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step-list li strong{color:var(--c-ink);}

/* ============ 11. 表格 ============ */
.table-wrap{
  margin-top:22px;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.cmp-table{
  width:100%;
  min-width:660px;
  border-collapse:separate;
  border-spacing:0;
}
.cmp-table caption{
  caption-side:top;
  text-align:left;
  font-size:13px;
  color:var(--c-ink-3);
  padding:0 0 0;
}
.cmp-table th{
  background:#F2EEFF;
  color:var(--c-brand-deep);
  font-size:14px;
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  white-space:nowrap;
}
.cmp-table td{
  padding:16px 18px;
  border-top:1px solid var(--c-line);
  font-size:15px;
  line-height:1.75;
  color:var(--c-ink-2);
}
.cmp-table td:first-child{color:var(--c-ink);font-weight:600;white-space:nowrap;}
.cmp-table tbody tr:hover td{background:#FAFAFF;}

/* ============ 12. 折叠面板 ============ */
.acc-group{margin-top:22px;}
.acc-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:14px;font-weight:600;color:var(--c-ink-3);
  letter-spacing:.04em;
  margin-bottom:12px;
}
.acc-group-title::after{
  content:"";flex:1;height:1px;background:var(--c-line);
}
.acc-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.acc-item[open]{
  border-color:rgba(107,78,255,.4);
  box-shadow:var(--sh-1);
}
.acc-item summary{
  list-style:none;
  cursor:pointer;
  padding:16px 18px;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  transition:background .2s ease,color .2s ease;
}
.acc-item summary::-webkit-details-marker{display:none;}
.acc-item summary:hover{background:#FAFAFF;color:var(--c-brand-deep);}
.acc-item summary::after{
  content:"";
  width:9px;height:9px;
  border-right:2px solid var(--c-ink-3);
  border-bottom:2px solid var(--c-ink-3);
  transform:rotate(45deg);
  transition:transform .2s ease,border-color .2s ease;
  flex:none;
  margin-top:-4px;
}
.acc-item[open] summary{color:var(--c-brand-deep);}
.acc-item[open] summary::after{transform:rotate(-135deg);border-color:var(--c-brand);margin-top:4px;}
.acc-body{
  padding:0 18px 18px 21px;
  border-left:3px solid var(--c-brand);
  margin-left:18px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
}
.acc-body p + p{margin-top:.9em;}

/* ============ 13. 交叉链接与 CTA ============ */
.cross-block{
  margin-top:36px;
  padding:28px 32px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.cross-block h2{font-size:20px;margin-bottom:10px;}
.cross-block p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px;}
.cross-links{display:flex;flex-wrap:wrap;gap:12px;}
.cross-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;
  border-radius:var(--r-pill);
  background:var(--c-surface-2);
  color:var(--c-ink);
  font-size:14px;font-weight:500;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
}
.cross-pill:hover{
  background:#F2EEFF;
  color:var(--c-brand-deep);
  border-color:rgba(107,78,255,.3);
  transform:translateY(-2px);
}
.cross-pill i{font-size:13px;color:var(--c-brand);}
.back-row{margin-top:18px;}

.cta-band{
  margin-top:32px;
  border-radius:var(--r-xl);
  background:var(--c-brand-grad);
  padding:40px 40px;
  color:#fff;
  position:relative;
  overflow:hidden;
  box-shadow:var(--sh-brand);
}
.cta-band::after{
  content:"";
  position:absolute;left:-60px;bottom:-100px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.2),rgba(255,255,255,0) 70%);
}
.cta-copy{position:relative;z-index:1;}
.cta-copy h2{
  color:#fff;
  font-size:clamp(22px,2.4vw,30px);
  letter-spacing:-.01em;
}
.cta-copy p{
  color:rgba(255,255,255,.9);
  font-size:15px;
  margin-top:12px;
  max-width:520px;
}
.cta-actions{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:22px;
}
.cta-actions .btn-primary{background:#fff;color:var(--c-brand-deep);box-shadow:0 12px 28px rgba(22,24,46,.18);}
.cta-actions .btn-primary:hover{background:#fff;color:var(--c-brand-deep);}
.cta-actions .btn-secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,.7);}
.cta-actions .btn-secondary:hover{background:rgba(255,255,255,.16);color:#fff;}
.cta-note{
  position:relative;z-index:1;
  margin-top:18px;
  font-size:13px;
  color:rgba(255,255,255,.82);
}

/* ============ 14. 移动端顶部导航 ============ */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:56px;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;
  padding:0 16px;
}
.mobile-brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);}
.mobile-brand .brand-mark{width:32px;height:32px;border-radius:10px;font-size:14px;}
.mobile-brand strong{font-size:14.5px;line-height:1.2;display:block;}
.mobile-brand span{font-size:11.5px;color:var(--c-ink-3);display:block;line-height:1.2;}
.menu-toggle{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);
  font-size:16px;
}
.menu-toggle:hover{background:var(--c-surface-2);}
.drawer-mask{
  display:none;
  position:fixed;inset:0;
  background:rgba(22,24,46,.45);
  z-index:65;
  opacity:0;
  transition:opacity .25s ease;
}
.drawer-mask.is-open{display:block;opacity:1;}

/* ============ 15. 页脚 ============ */
.site-footer{
  background:#16182E;
  color:#B9BDD4;
  margin-top:24px;
  padding:64px 32px 0;
}
.footer-grid{
  max-width:1360px;margin:0 auto;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{width:38px;height:38px;border-radius:12px;}
.footer-brand strong{display:block;color:#fff;font-size:16px;line-height:1.25;}
.footer-brand span{display:block;font-size:13px;color:#8B90AB;line-height:1.3;}
.footer-col p{font-size:14px;line-height:1.9;color:#B9BDD4;}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;line-height:1.9;color:#B9BDD4;}
.footer-col ul a:hover{color:#fff;}
.footer-bottom{
  max-width:1360px;margin:0 auto;
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B90AB;
}

/* ============ 16. 工具类 ============ */
.mt-0{margin-top:0;}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ 17. 响应式 ============ */
@media (max-width:1199px){
  .page-shell{grid-template-columns:200px minmax(0,1fr);gap:24px;padding:0 24px;}
  .container-wide,.notice-inner,.site-footer{padding-left:24px;padding-right:24px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}

@media (max-width:991px){
  .mobile-bar{display:flex;}
  .page-shell{
    grid-template-columns:minmax(0,1fr);
    gap:0;
    padding:0 24px;
  }
  .side-nav{
    position:fixed;
    top:0;left:0;bottom:0;
    width:296px;max-width:86vw;
    height:100vh;
    background:#fff;
    padding:24px 20px;
    box-shadow:0 24px 60px rgba(22,24,46,.24);
    transform:translateX(-102%);
    transition:transform .28s cubic-bezier(.22,.61,.36,1);
    z-index:68;
    overflow-y:auto;
  }
  .side-nav.is-open{transform:translateX(0);}
  .side-nav .side-cta{margin-top:24px;}
  .page-hero{margin-top:20px;padding:38px 28px;}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:20px;margin-top:24px;}
  .doc-toc{display:none;}
  .toc-mobile{display:block;margin-top:20px;}
  .toc-mobile .acc-item summary{font-size:15px;}
  .sec-card{padding:24px;scroll-margin-top:80px;}
  .cta-band{padding:32px 26px;}
  .site-footer{padding:56px 24px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:767px){
  body{font-size:15.5px;}
  .notice-inner{padding:10px 16px;font-size:12.5px;gap:8px;}
  .page-shell{padding:0 16px;}
  .container-wide,.site-footer{padding-left:16px;padding-right:16px;}
  .page-hero{padding:30px 20px;border-radius:var(--r-lg);}
  .page-hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .badge-row{gap:10px;}
  .data-badge{flex:1 1 calc(50% - 10px);min-width:0;padding:10px 14px;}
  .data-badge b{font-size:22px;}
  .sec-card{padding:20px;border-radius:var(--r-lg);}
  .sec-head h2{font-size:21px;}
  .acc-item summary{font-size:16px;padding:14px 16px;}
  .acc-body{margin-left:14px;padding:0 16px 16px 16px;}
  .cross-block{padding:22px 20px;}
  .cta-band{padding:26px 20px;}
  .cta-actions{flex-direction:column;gap:12px;}
  .cta-actions .btn{width:100%;}
  .step-list li{padding:14px 16px 14px 56px;}
  .step-list li::before{left:14px;top:13px;width:28px;height:28px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:479px){
  .page-shell{padding:0 14px;}
  .container-wide,.site-footer{padding-left:14px;padding-right:14px;}
  .page-hero h1{font-size:23px;}
  .data-badge b{font-size:20px;}
  .sec-card{padding:18px;}
  .btn{width:100%;}
  .cross-pill{width:100%;justify-content:flex-start;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --c-brand:#6B4EFF;
  --c-brand-deep:#5A3BE0;
  --c-brand-2:#16D6C0;
  --c-brand-grad:linear-gradient(115deg,#7B4DFF 0%,#6B4EFF 42%,#16D6C0 100%);
  --c-accent:#FF6B4A;
  --c-ink:#16182E;
  --c-ink-2:#5B6081;
  --c-ink-3:#8B90AB;
  --c-bg:#F5F6FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF0FA;
  --c-line:#E4E7F3;
  --c-ok:#22C55E;
  --c-warn:#E5484D;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(22,24,46,.06);
  --sh-2:0 10px 30px rgba(22,24,46,.09);
  --sh-brand:0 16px 40px rgba(107,78,255,.22);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ 基础重置与 Foundation 覆盖 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover,a:focus{color:var(--c-brand-deep);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
body,.button,.accordion-title,input,select,textarea{font-family:var(--font-sans);}
.off-canvas-content{box-shadow:none;background:transparent;}
.reveal{border-radius:var(--r-lg);}

/* ============ 布局骨架 ============ */
.layout{
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  gap:32px;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  align-items:start;
}
.content{
  min-width:0;
  max-width:968px;
  padding:32px 0 8px;
}
.section{padding:44px 0;}
.section:first-child{padding-top:8px;}

/* ============ 侧栏品牌与导航 ============ */
.side-nav{
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px 0;
  border-right:1px solid var(--c-line);
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 4px 26px;
}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  border-radius:var(--r-md);
  background:var(--c-brand-grad);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  box-shadow:var(--sh-brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.35;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);}
.brand-text span{font-size:13px;color:var(--c-ink-3);letter-spacing:.14em;}
.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  min-height:44px;
  padding:10px 14px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--c-ink-3);transition:color .2s var(--ease);}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-ink);}
.nav-item:hover i{color:var(--c-brand);}
.nav-item.is-active{
  background:#F0ECFF;
  color:var(--c-brand);
  font-weight:600;
}
.nav-item.is-active i{color:var(--c-brand);}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:22px;
  border-radius:var(--r-pill);
  background:var(--c-brand-grad);
}
.side-footer{margin-top:auto;padding-top:20px;}
.side-footer .side-note{
  font-size:12px;
  line-height:1.6;
  color:var(--c-ink-3);
  margin-top:12px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary{
  background:var(--c-brand-grad);
  color:#fff;
  box-shadow:var(--sh-brand);
}
.btn-primary:hover,.btn-primary:focus{color:#fff;transform:translateY(-2px);box-shadow:0 20px 44px rgba(107,78,255,.3);}
.btn-primary:active{transform:translateY(0);background:var(--c-brand-deep);}
.btn-ghost{
  background:#fff;
  color:var(--c-brand);
  border:1px solid var(--c-brand);
}
.btn-ghost:hover,.btn-ghost:focus{background:#F0ECFF;color:var(--c-brand-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-plain{
  background:transparent;
  color:var(--c-ink-2);
  border:1px solid var(--c-line);
}
.btn-plain:hover,.btn-plain:focus{background:var(--c-surface-2);color:var(--c-ink);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.55;filter:saturate(60%);pointer-events:none;}
a:focus-visible,button:focus-visible,.nav-item:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-brand);
  outline-offset:2px;
  border-radius:var(--r-sm);
}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:40;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.mobile-topbar .brand{padding:0;gap:10px;}
.mobile-topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:15px;box-shadow:none;}
.mobile-topbar .brand-text strong{font-size:15px;}
.mobile-topbar .brand-text span{font-size:11px;}
.hamburger{
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-ink);
  font-size:16px;
}
.hamburger:hover{background:var(--c-surface-2);}
.off-canvas.position-left{
  width:300px;
  background:#fff;
  border-right:1px solid var(--c-line);
}
.drawer-inner{
  display:flex;
  flex-direction:column;
  height:100%;
  padding:20px 18px 28px;
  overflow-y:auto;
}
.drawer-close{
  align-self:flex-end;
  width:36px;height:36px;
  border-radius:var(--r-sm);
  background:var(--c-surface-2);
  color:var(--c-ink-2);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:12px;
}
.drawer-inner .nav-item{min-height:52px;}
.drawer-note{
  margin-top:14px;
  font-size:12px;
  line-height:1.6;
  color:var(--c-ink-3);
}

/* ============ Hero ============ */
.hero-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  padding:56px 48px 48px;
  color:#fff;
  min-height:340px;
  background-image:
    linear-gradient(115deg,rgba(123,77,255,.9) 0%,rgba(107,78,255,.86) 46%,rgba(22,214,192,.82) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-brand);
}
.hero-card::after{
  content:"";
  position:absolute;
  right:-80px;bottom:-90px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28) 0%,rgba(255,255,255,0) 68%);
  pointer-events:none;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.32);
  font-size:12px;
  letter-spacing:.08em;
  margin-bottom:18px;
}
.hero-card h1{
  font-size:clamp(26px,3.4vw,42px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:16em;
}
.hero-lede{
  margin-top:16px;
  max-width:34em;
  font-size:16px;
  line-height:1.8;
  color:rgba(255,255,255,.92);
}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-actions .btn-ghost{
  background:rgba(255,255,255,.14);
  border-color:rgba(255,255,255,.65);
  color:#fff;
}
.hero-actions .btn-ghost:hover,.hero-actions .btn-ghost:focus{
  background:#fff;
  color:var(--c-brand);
}
.badge-row{
  position:relative;
  z-index:2;
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.stat-badge{
  min-width:148px;
  padding:14px 18px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(8px);
}
.stat-num{
  display:block;
  font-size:28px;
  font-weight:700;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.stat-cap{
  display:block;
  margin-top:4px;
  font-size:13px;
  color:rgba(255,255,255,.86);
}
.hero-note{
  position:relative;
  z-index:2;
  margin-top:18px;
  font-size:12px;
  color:rgba(255,255,255,.78);
}

/* ============ 端型标签条 ============ */
.chip-bar{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:4px 2px 14px;
  margin-top:20px;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.chip-bar::-webkit-scrollbar{height:6px;}
.chip-bar::-webkit-scrollbar-thumb{background:rgba(107,78,255,.25);border-radius:var(--r-pill);}
.chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 18px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--c-line);
  color:var(--c-ink-2);
  font-size:14px;
  font-weight:500;
  transition:border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.chip i{font-size:13px;color:var(--c-ink-3);}
.chip:hover{border-color:rgba(107,78,255,.35);color:var(--c-brand);box-shadow:var(--sh-1);}
.chip:hover i{color:var(--c-brand);}
.chip.is-active{
  background:var(--c-brand-grad);
  border-color:transparent;
  color:#fff;
  box-shadow:var(--sh-brand);
}
.chip.is-active i{color:#fff;}

/* ============ 板块标题 ============ */
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:26px;
}
.section-title{
  font-size:clamp(22px,2.4vw,32px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-title .accent{
  background:var(--c-brand-grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.section-sub{
  margin-top:10px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-ink-2);
  max-width:44em;
}
.section-link{
  font-size:14px;
  font-weight:600;
  color:var(--c-brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.section-link:hover{gap:10px;}

/* ============ 媒体混排区 ============ */
.media-grid{margin-top:4px;}
.big-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.big-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.big-media figcaption{
  padding:16px 20px 18px;
  font-size:14px;
  line-height:1.75;
  color:var(--c-ink-2);
  background:#fff;
}
.big-media:hover{
  border-color:rgba(107,78,255,.35);
  box-shadow:var(--sh-2);
  transform:translateY(-4px);
}
.big-media:hover img{transform:scale(1.03);}
.spec-stack{
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
  margin-top:16px;
}
.spec-card{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding:16px 18px;
  border-radius:var(--r-md);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.spec-card:hover{
  border-color:rgba(107,78,255,.35);
  box-shadow:var(--sh-1);
  transform:translateY(-2px);
}
.spec-name{
  font-size:13px;
  color:var(--c-ink-3);
  white-space:nowrap;
}
.spec-value{
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
  font-variant-numeric:tabular-nums;
  text-align:right;
}
.spec-value.is-brand{color:var(--c-brand);}

/* ============ 图墙 ============ */
.gallery-grid{margin-top:6px;}
.gallery-item{
  position:relative;
  display:block;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.gallery-item img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.gallery-item:hover{
  border-color:rgba(107,78,255,.35);
  box-shadow:var(--sh-2);
  transform:translateY(-4px);
}
.gallery-item:hover img{transform:scale(1.04);}
.gallery-cap{
  position:absolute;
  left:14px;bottom:14px;
  max-width:calc(100% - 28px);
  padding:8px 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  font-size:13px;
  color:var(--c-ink);
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease);
}
.gallery-item:hover .gallery-cap{transform:translateY(-4px);}
.cat-pill{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  line-height:1;
}
.pill-purple{background:rgba(107,78,255,.12);color:#5A3BE0;}
.pill-cyan{background:rgba(22,214,192,.14);color:#0E9E8E;}
.pill-orange{background:rgba(255,107,74,.14);color:#D4472A;}
.pill-tag{
  position:absolute;
  left:14px;top:14px;
  background:rgba(255,255,255,.94);
  box-shadow:var(--sh-1);
}

/* ============ 环境适配表 ============ */
.env-table-wrap{
  border-radius:var(--r-lg);
  border:1px solid var(--c-line);
  background:#fff;
  box-shadow:var(--sh-1);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
table.env-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  margin:0;
}
table.env-table thead th{
  background:#F2EEFF;
  color:var(--c-brand-deep);
  font-size:14px;
  font-weight:600;
  text-align:left;
  padding:16px 20px;
  white-space:nowrap;
  border-bottom:1px solid var(--c-line);
}
table.env-table tbody td{
  padding:16px 20px;
  font-size:15px;
  line-height:1.75;
  color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
}
table.env-table tbody tr:last-child td{border-bottom:0;}
table.env-table tbody tr:hover td{background:#FAFAFF;}
table.env-table tbody td:first-child{
  color:var(--c-ink);
  font-weight:600;
  white-space:nowrap;
}
.table-note{
  margin-top:14px;
  font-size:13px;
  color:var(--c-ink-3);
}

/* ============ 自查清单 ============ */
.check-grid{margin-top:4px;}
.check-card{
  height:100%;
  padding:24px;
  border-radius:var(--r-lg);
  background:#fff;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.check-card:hover{
  border-color:rgba(107,78,255,.35);
  box-shadow:var(--sh-2);
  transform:translateY(-4px);
}
.check-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:50%;
  background:var(--c-brand-grad);
  color:#fff;
  font-size:16px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
  box-shadow:0 8px 18px rgba(107,78,255,.24);
}
.check-card h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:10px;
}
.check-card p{
  font-size:15px;
  line-height:1.8;
  color:var(--c-ink-2);
}
.check-card .hint{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  font-size:13px;
  color:var(--c-ink-3);
}
.check-card .hint i{color:var(--c-ok);}

/* ============ FAQ ============ */
.faq-wrap{margin-top:4px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border-radius:var(--r-md);
  background:#fff;
  border:1px solid var(--c-line);
  padding:0 20px;
  box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{
  border-color:rgba(107,78,255,.35);
  box-shadow:var(--sh-2);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:13px;
  color:var(--c-brand);
  flex:0 0 auto;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-body{
  margin:0 0 18px;
  padding-left:14px;
  border-left:3px solid var(--c-brand);
  font-size:15px;
  line-height:1.8;
  color:var(--c-ink-2);
}

/* ============ CTA 大卡 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  padding:48px;
  background:var(--c-brand-grad);
  color:#fff;
  box-shadow:var(--sh-brand);
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:240px;height:240px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.3) 0%,rgba(255,255,255,0) 70%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:22em;
}
.cta-band p{
  margin-top:14px;
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.92);
  max-width:38em;
}
.cta-actions{
  position:relative;
  z-index:2;
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.cta-actions .btn-ghost{
  background:rgba(255,255,255,.14);
  border-color:rgba(255,255,255,.7);
  color:#fff;
}
.cta-actions .btn-ghost:hover,.cta-actions .btn-ghost:focus{background:#fff;color:var(--c-brand);}
.cta-meta{
  position:relative;
  z-index:2;
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.cta-meta span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  font-size:13px;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:56px;
  background:#16182E;
  color:#B9BDD4;
  padding:64px 32px 0;
}
.footer-grid{
  max-width:var(--container);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-band{
  max-width:var(--container);
  margin:0 auto;
  padding:0 0 32px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col ul a{
  display:inline-block;
  font-size:14px;
  line-height:1.9;
  color:#B9BDD4;
}
.footer-col ul a:hover,.footer-col ul a:focus{color:#FFFFFF;}
.footer-col p{
  font-size:14px;
  line-height:1.85;
  color:#9AA0BC;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand span{display:block;}
.footer-brand strong{
  display:block;
  font-size:17px;
  color:#fff;
  line-height:1.4;
}
.footer-brand span span{
  font-size:13px;
  color:#8B90AB;
  letter-spacing:.12em;
}
.footer-bottom{
  max-width:var(--container);
  margin:0 auto;
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 30px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  line-height:1.7;
  color:#8B90AB;
}

/* ============ 工具类 ============ */
.mt-24{margin-top:24px;}
.mt-16{margin-top:16px;}
.text-muted{color:var(--c-ink-3);}

/* ============ 断点 1200 ============ */
@media screen and (max-width:1200px){
  .layout{grid-template-columns:200px minmax(0,1fr);gap:28px;padding:0 24px;}
  .content{max-width:100%;}
}

/* ============ 断点 992 ============ */
@media screen and (max-width:992px){
  .layout{grid-template-columns:minmax(0,1fr);padding:0 24px;gap:0;}
  .side-nav{display:none;}
  .mobile-topbar{display:flex;}
  .off-canvas.position-left{transform:translateX(-100%);}
  .content{padding:24px 0 8px;}
  .hero-card{padding:40px 28px 34px;min-height:0;}
  .hero-card h1{font-size:26px;}
  .hero-lede{font-size:15px;}
  .section{padding:36px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-footer{padding:48px 24px 0;}
  .cta-band{padding:36px 28px;}
  .spec-stack{grid-template-columns:1fr 1fr;margin-top:20px;}
}

/* ============ 断点 768 ============ */
@media screen and (max-width:768px){
  .layout{padding:0 16px;}
  .hero-card{padding:32px 22px 28px;border-radius:var(--r-lg);}
  .hero-card h1{font-size:25px;}
  .badge-row{gap:10px;margin-top:26px;}
  .stat-badge{min-width:0;flex:1 1 44%;padding:12px 14px;}
  .stat-num{font-size:22px;}
  .section{padding:32px 0;}
  .section-head{margin-bottom:20px;}
  .spec-stack{grid-template-columns:1fr;}
  .faq-item{padding:0 16px;}
  .faq-item summary{font-size:16px;padding:16px 0;}
  .cta-band{padding:30px 22px;border-radius:var(--r-lg);}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}

/* ============ 断点 480 ============ */
@media screen and (max-width:480px){
  body{font-size:15px;}
  .layout{padding:0 14px;}
  .hero-card{padding:26px 18px 24px;}
  .hero-card h1{font-size:22px;}
  .hero-actions .btn{width:100%;}
  .stat-badge{flex:1 1 100%;}
  .chip{height:36px;padding:0 14px;font-size:13px;}
  .gallery-cap{font-size:12px;padding:6px 12px;}
  .check-card{padding:20px;}
  .faq-item summary{font-size:15px;}
  .site-footer{padding:40px 14px 0;}
  .cta-band{padding:26px 18px;}
  .table-note{font-size:12px;}
}

/* roulang page: category4 */
:root{
  --c-brand:#6B4EFF;
  --c-brand-deep:#5A3BE0;
  --c-brand-2:#16D6C0;
  --c-brand-grad:linear-gradient(115deg,#7B4DFF 0%,#6B4EFF 42%,#16D6C0 100%);
  --c-accent:#FF6B4A;
  --c-ink:#16182E;
  --c-ink-2:#5B6081;
  --c-ink-3:#8B90AB;
  --c-bg:#F5F6FB;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF0FA;
  --c-line:#E4E7F3;
  --c-ok:#22C55E;
  --c-warn:#E5484D;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(22,24,46,.06);
  --sh-2:0 10px 30px rgba(22,24,46,.09);
  --sh-brand:0 16px 40px rgba(107,78,255,.22);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --t:240ms cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--c-brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-brand-deep);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px;}

/* Foundation 默认外观覆盖 */
body,.button,button,input,select,textarea{font-family:var(--font-sans);}
a.button,.button{background:var(--c-brand);border-radius:var(--r-pill);}
a{color:var(--c-brand);}
a:hover{color:var(--c-brand-deep);}
input[type="search"],input[type="text"],input[type="tel"]{border-radius:var(--r-md);border-color:var(--c-line);box-shadow:none;height:48px;}
.accordion,.accordion-item{background:transparent;}
.reveal{border-radius:var(--r-lg);}

/* 布局骨架 */
.app{
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  max-width:1440px;
  margin:0 auto;
  align-items:start;
}
.side-nav{
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  gap:26px;
  padding:26px 18px 22px;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
}
.content{min-width:0;padding:0 32px;}
.container{max-width:var(--container);margin:0 auto;}
.narrow{max-width:968px;}

/* 品牌 */
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 0;}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;
  border-radius:var(--r-md);
  background:var(--c-brand-grad);
  color:#fff;
  display:grid;place-items:center;
  font-size:19px;
  box-shadow:var(--sh-brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.brand-text span{font-size:12px;color:var(--c-ink-3);letter-spacing:.22em;}

/* 侧边导航 */
.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-md);
  font-size:14.5px;
  font-weight:500;
  color:var(--c-ink-2);
  transition:background var(--t),color var(--t);
}
.nav-item i{width:18px;font-size:14px;color:var(--c-ink-3);transition:color var(--t);}
.nav-item:hover{background:var(--c-surface-2);color:var(--c-ink);}
.nav-item:hover i{color:var(--c-brand);}
.nav-item.is-active{background:#F970FF0F;background:#F1EDFF;color:var(--c-brand);font-weight:600;}
.nav-item.is-active i{color:var(--c-brand);}
.nav-item.is-active::before{
  content:"";
  position:absolute;left:0;top:9px;bottom:9px;
  width:3px;border-radius:var(--r-pill);
  background:var(--c-brand-grad);
}
.nav-side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.nav-side-foot .btn{width:100%;}
.nav-side-foot small{font-size:12px;line-height:1.6;color:var(--c-ink-3);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--c-brand-grad);color:#fff;box-shadow:var(--sh-brand);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 44px rgba(107,78,255,.3);}
.btn-primary:active{transform:translateY(0);background:var(--c-brand-deep);}
.btn-outline{background:#fff;color:var(--c-brand);border:1px solid rgba(107,78,255,.5);}
.btn-outline:hover{background:#F0ECFF;color:var(--c-brand-deep);}
.btn-ghost{background:transparent;color:var(--c-ink-2);border:1px solid var(--c-line);}
.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-ink);}
.btn-light{background:#fff;color:var(--c-brand);border:0;}
.btn-light:hover{background:#F4F1FF;color:var(--c-brand-deep);}
.btn-line-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6);}
.btn-line-light:hover{background:rgba(255,255,255,.16);color:#fff;}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px;}
.btn-block{width:100%;}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3);padding:24px 0 16px;}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-brand);}
.crumb i{font-size:9px;opacity:.7;}
.crumb .now{color:var(--c-ink-2);}

/* 胶囊与徽章 */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.pill-brand{background:rgba(107,78,255,.12);color:var(--c-brand-deep);}
.pill-cyan{background:rgba(22,214,192,.14);color:#0C9B8C;}
.pill-orange{background:rgba(255,107,74,.14);color:#D8502F;}
.pill-soft{background:rgba(255,255,255,.2);color:#fff;}
.pill-ghost{background:var(--c-surface-2);color:var(--c-ink-2);}

/* Hero */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  padding:52px 48px 44px;
  color:#fff;
  background-image:linear-gradient(115deg,rgba(107,78,255,.88) 0%,rgba(90,59,224,.82) 45%,rgba(22,214,192,.78) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-2);
}
.cat-hero::after{
  content:"";
  position:absolute;right:-120px;top:-120px;
  width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),transparent 68%);
  pointer-events:none;
}
.cat-hero h1{
  margin:16px 0 12px;
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:720px;
}
.cat-hero .hero-sub{font-size:17px;line-height:1.75;color:rgba(255,255,255,.92);max-width:640px;}
.hero-search{
  position:relative;
  z-index:2;
  display:flex;align-items:center;gap:10px;
  margin-top:26px;
  padding:8px 8px 8px 18px;
  background:#fff;
  border-radius:var(--r-pill);
  max-width:560px;
  box-shadow:0 12px 30px rgba(22,24,46,.16);
}
.hero-search i{color:var(--c-ink-3);font-size:15px;}
.hero-search input{
  flex:1;min-width:0;height:44px;
  border:0;background:transparent;
  font-size:15px;color:var(--c-ink);
  outline:none;
}
.hero-search input::placeholder{color:var(--c-ink-3);}
.hero-search .btn{height:40px;padding:0 22px;}

.stat-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:30px;position:relative;z-index:2;}
.stat{
  min-width:158px;
  flex:1 1 158px;
  padding:14px 18px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(8px);
}
.stat b{
  display:block;
  font-size:26px;font-weight:700;line-height:1.2;
  font-variant-numeric:tabular-nums;
  color:#fff;
}
.stat span{font-size:13px;color:rgba(255,255,255,.85);}
.hero-note{margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.75);}

/* 通用板块 */
.section{padding:64px 0 0;}
.section:last-of-type{padding-bottom:72px;}
.sec-head{margin-bottom:28px;}
.sec-head h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.32;
  font-weight:700;
  letter-spacing:-.01em;
}
.sec-head p{margin-top:10px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2);max-width:760px;}

/* 图文速览 */
.insight{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:28px;
  align-items:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--sh-1);
}
.insight figure{border-radius:var(--r-md);overflow:hidden;background:var(--c-surface-2);aspect-ratio:16/10;}
.insight img{width:100%;height:100%;object-fit:cover;}
.insight h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.insight p{font-size:15px;line-height:1.85;color:var(--c-ink-2);}
.insight ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.insight li{position:relative;padding-left:18px;font-size:14.5px;color:var(--c-ink-2);}
.insight li::before{
  content:"";position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:50%;
  background:var(--c-brand-grad);
}

/* 表格 */
.table-wrap{
  overflow-x:auto;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
table{width:100%;border-collapse:collapse;min-width:680px;}
thead th{
  background:#F2EEFF;
  color:var(--c-brand-deep);
  font-size:14px;
  font-weight:600;
  text-align:left;
  padding:15px 22px;
  white-space:nowrap;
}
tbody td{
  padding:16px 22px;
  border-top:1px solid var(--c-line);
  font-size:15px;
  color:var(--c-ink-2);
  vertical-align:top;
}
tbody td:first-child{color:var(--c-ink);font-weight:600;white-space:nowrap;}
tbody tr:hover td{background:#FAFBFF;}

/* 步骤流程 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step-card{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:26px 22px 24px;
  box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35);}
.step-no{
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--c-brand-grad);
  color:#fff;font-weight:700;font-size:16px;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-brand);
  margin-bottom:16px;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);}

/* FAQ 双列 */
.qa-col-head{
  display:flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-ink-3);
  text-transform:none;
  margin:0 0 14px 4px;
}
.qa-col-head i{color:var(--c-brand);}
.qa-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.qa-item:hover{border-color:rgba(107,78,255,.32);box-shadow:var(--sh-1);}
.qa-q{
  position:relative;
  width:100%;
  display:flex;align-items:flex-start;gap:12px;
  padding:18px 20px 18px 22px;
  text-align:left;
  font-size:16.5px;font-weight:600;line-height:1.6;
  color:var(--c-ink);
  transition:color var(--t);
}
.qa-q:hover{color:var(--c-brand);}
.qa-q .arrow{margin-left:auto;flex:0 0 auto;color:var(--c-ink-3);font-size:13px;transition:transform 200ms ease,color 200ms ease;}
.qa-item.is-open .qa-q{color:var(--c-brand);}
.qa-item.is-open .arrow{transform:rotate(180deg);color:var(--c-brand);}
.qa-item.is-open{box-shadow:var(--sh-2);border-color:rgba(107,78,255,.35);}
.qa-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 200ms ease;
  border-left:3px solid var(--c-brand);
  margin:0 20px 0 22px;
}
.qa-item.is-open .qa-a{max-height:520px;}
.qa-a-inner{padding:4px 0 20px 14px;}
.qa-a-inner p{font-size:15px;line-height:1.85;color:var(--c-ink-2);}
.qa-a-inner p + p{margin-top:10px;}
.qa-a-inner b{color:var(--c-ink);font-weight:600;}

/* CTA 大卡 */
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--c-brand-grad);
  color:#fff;
  padding:44px 46px;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:36px;
  align-items:center;
  box-shadow:0 22px 50px rgba(107,78,255,.25);
}
.cta-card::after{
  content:"";
  position:absolute;left:-80px;bottom:-120px;
  width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);
  pointer-events:none;
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);line-height:1.34;font-weight:700;margin-bottom:12px;}
.cta-card p{font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.9);}
.cta-list{display:flex;flex-direction:column;gap:12px;margin-top:22px;}
.cta-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.94);}
.cta-list i{margin-top:6px;font-size:14px;color:#fff;opacity:.9;}
.cta-side{
  position:relative;z-index:2;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.3);
  border-radius:var(--r-lg);
  padding:24px;
  backdrop-filter:blur(6px);
}
.cta-side h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.cta-side .faq-form{display:flex;flex-direction:column;gap:12px;margin-top:16px;}
.cta-side label{font-size:13.5px;color:rgba(255,255,255,.85);}
.cta-side input{
  height:48px;width:100%;
  border:0;border-radius:var(--r-md);
  padding:0 16px;
  background:#fff;color:var(--c-ink);
  outline:none;
}
.cta-side input::placeholder{color:var(--c-ink-3);}
.cta-side input:focus{box-shadow:0 0 0 3px rgba(255,255,255,.42);}
.cta-side .field-hint{font-size:13px;color:rgba(255,255,255,.8);}
.service-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  color:var(--c-brand-deep);
  font-size:13px;font-weight:600;
  font-variant-numeric:tabular-nums;
}
.service-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--c-ok);}

/* 页脚 */
.site-footer{
  margin-top:72px;
  background:#16182E;
  color:#B9BDD4;
  padding:64px 32px 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  max-width:var(--container);
  margin:0 auto;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{display:block;font-size:16px;color:#fff;line-height:1.3;}
.footer-brand span span{display:block;font-size:12px;color:#8B90AB;letter-spacing:.2em;}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-col p{font-size:14px;line-height:1.9;color:#B9BDD4;}
.footer-col ul{display:flex;flex-direction:column;gap:8px;}
.footer-col ul a{font-size:14px;line-height:1.9;color:#B9BDD4;}
.footer-col ul a:hover{color:#fff;}
.footer-bottom{
  max-width:var(--container);
  margin:44px auto 0;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#8B90AB;
}

/* 移动端顶栏与抽屉 */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:60;
  height:56px;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:blur(10px);
}
.mobile-bar .brand{padding:0;gap:10px;}
.mobile-bar .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:15px;border-radius:12px;box-shadow:none;}
.mobile-bar .brand-text strong{font-size:14.5px;}
.mobile-bar .brand-text span{font-size:10px;letter-spacing:.18em;}
.burger{
  width:42px;height:42px;border-radius:var(--r-md);
  display:grid;place-items:center;
  color:var(--c-ink);
  background:var(--c-surface-2);
  font-size:16px;
}
.drawer-mask{
  position:fixed;inset:0;z-index:80;
  background:rgba(22,24,46,.45);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:82%;max-width:340px;
  background:#fff;
  padding:22px 18px;
  transform:translateX(102%);
  transition:transform 280ms cubic-bezier(.22,.61,.36,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-md);
  background:var(--c-surface-2);color:var(--c-ink);
  display:grid;place-items:center;
}
.drawer .nav-item{height:52px;font-size:15px;}
.drawer-foot{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.drawer-foot small{font-size:12px;color:var(--c-ink-3);line-height:1.7;}

/* 工具类 */
.mt-24{margin-top:24px;}
.mt-32{margin-top:32px;}
.text-soft{color:var(--c-ink-2);}
.nowrap{white-space:nowrap;}

/* 响应式：1200 / 992 / 768 / 480 */
@media screen and (max-width:1199px){
  .app{grid-template-columns:200px minmax(0,1fr);}
  .side-nav{padding:22px 14px 18px;}
  .content{padding:0 24px;}
  .cat-hero{padding:44px 34px 38px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media screen and (max-width:991px){
  .app{grid-template-columns:minmax(0,1fr);}
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .content{padding:0 24px;}
  .insight{grid-template-columns:1fr;gap:22px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-card{grid-template-columns:1fr;gap:26px;padding:34px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .content{padding:0 16px;}
  .section{padding:48px 0 0;}
  .section:last-of-type{padding-bottom:56px;}
  .cat-hero{padding:34px 22px 30px;border-radius:var(--r-lg);}
  .cat-hero h1{margin:12px 0 10px;}
  .cat-hero .hero-sub{font-size:15.5px;}
  .hero-search{flex-wrap:wrap;border-radius:var(--r-lg);padding:12px 14px;}
  .hero-search input{flex:1 1 100%;height:40px;}
  .hero-search .btn{width:100%;}
  .stat{flex:1 1 100%;min-width:0;}
  .stat b{font-size:22px;}
  .steps{grid-template-columns:1fr;}
  .qa-q{font-size:15.5px;padding:16px 16px 16px 18px;}
  .qa-a{margin:0 16px 0 18px;}
  .qa-item.is-open .qa-a{max-height:720px;}
  .cta-card{padding:28px 22px;border-radius:var(--r-lg);}
  .cta-side{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:46px 16px 0;}
  .footer-bottom{font-size:12.5px;flex-direction:column;gap:8px;}
  .btn-block-mobile{width:100%;}
  .btn-block-mobile + .btn-block-mobile{margin-top:12px;}
}
@media screen and (max-width:479px){
  .content{padding:0 14px;}
  .cat-hero{padding:28px 18px 26px;}
  .cat-hero h1{font-size:24px;}
  .section{padding:40px 0 0;}
  .sec-head h2{font-size:21px;}
  .step-card{padding:22px 18px;}
  .cta-card{padding:24px 18px;}
  .crumb{font-size:12.5px;padding:18px 0 12px;}
}