/* roulang page: index */
:root{
  --c-primary:#0E5AA7;
  --c-primary-dark:#083E75;
  --c-primary-soft:#E8F1FA;
  --c-accent:#FF7A1A;
  --c-accent-dark:#E96A0A;
  --c-teal:#12A594;
  --c-text:#16202B;
  --c-text-2:#56637A;
  --c-text-3:#8A94A6;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E3EAF3;
  --c-border:#EDF2F8;
  --c-border-strong:#C9D8E8;
  --r-card:12px;
  --r-btn:10px;
  --r-input:8px;
  --r-badge:999px;
  --r-mock:24px;
  --shadow-1:0 2px 8px rgba(16,42,74,.06);
  --shadow-2:0 10px 30px rgba(16,42,74,.10);
  --sidebar:232px;
  --ff:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-num:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:28px;
  letter-spacing:.02em;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms ease}
a:hover{color:var(--c-primary-dark)}
button{font-family:inherit;border:0;background:none;cursor:pointer;padding:0}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--c-text);letter-spacing:0}
h1{font-size:40px;line-height:48px;letter-spacing:-.01em}
h2{font-size:28px;line-height:36px;letter-spacing:-.01em}
h3{font-size:20px;line-height:28px;font-weight:600}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd,dt{margin:0}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid rgba(14,90,167,.35);outline-offset:2px}
::selection{background:rgba(14,90,167,.16)}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section--white{background:#fff}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
}
.btn i{font-size:14px}
.btn--lg{height:48px;padding:0 28px;font-size:16px}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--primary:active{transform:translateY(0)}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{background:#fff;border-color:var(--c-border-strong);color:var(--c-primary)}
.btn--ghost:hover{background:var(--c-bg);border-color:var(--c-primary);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn--block{width:100%}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;line-height:20px;padding:2px 10px;border-radius:var(--r-badge);
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:500;
}
.badge--accent{background:#FFF1E5;color:var(--c-accent-dark)}

/* ============ 侧边导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:60;
}
.side-nav__brand{
  height:72px;display:flex;align-items:center;gap:10px;padding:0 20px;
  border-bottom:1px solid var(--c-line);flex:0 0 auto;
}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:8px;background:var(--c-primary);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;
}
.brand-text{font-size:15px;font-weight:700;line-height:1.15;color:var(--c-text);letter-spacing:-.01em}
.brand-text small{display:block;font-size:11px;font-weight:400;color:var(--c-text-3);letter-spacing:.06em;margin-top:3px}
.side-nav__menu{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:48px;padding:0 12px;
  border-radius:10px;color:var(--c-text-2);font-size:15px;font-weight:500;
  transition:background-color 160ms ease,color 160ms ease;
}
.nav-item i{width:20px;text-align:center;font-size:16px;flex:0 0 20px}
.nav-item:hover{background:var(--c-bg);color:var(--c-primary)}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.side-nav__foot{padding:16px;border-top:1px solid var(--c-line);flex:0 0 auto}
.side-nav__ver{margin-top:10px;font-size:12px;line-height:18px;color:var(--c-text-3);text-align:center}

/* ============ 移动顶栏 + 抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar__brand{display:flex;align-items:center;gap:10px}
.topbar__brand .brand-text{font-size:14px}
.topbar__btn{
  width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--c-text);font-size:18px;background:var(--c-bg);
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;max-width:82vw;background:#fff;z-index:90;
  transform:translateX(-102%);transition:transform 260ms cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;box-shadow:var(--shadow-2);
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--c-line)}
.drawer__close{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:var(--c-bg);color:var(--c-text-2)}
.drawer__menu{padding:12px;display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto}
.drawer__foot{padding:16px;border-top:1px solid var(--c-line)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,25,45,.45);z-index:80;
  opacity:0;visibility:hidden;transition:opacity 240ms ease,visibility 240ms ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 主区域 ============ */
.main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}
.page-bar{
  position:sticky;top:0;z-index:30;height:48px;display:flex;align-items:center;
  padding:0 32px;background:rgba(255,255,255,.93);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-text-3);
}
.page-bar ol{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.page-bar li::after{content:"/";margin-left:8px;color:var(--c-text-3)}
.page-bar li:last-child::after{content:"";margin:0}
.page-bar a{color:var(--c-text-3)}
.page-bar a:hover{color:var(--c-primary)}
.page-bar strong{color:var(--c-text-2);font-weight:500}

/* ============ Hero ============ */
.hero{position:relative;background:#fff;border-bottom:1px solid var(--c-line);overflow:hidden}
.hero__bg{
  position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;opacity:.07;pointer-events:none;
}
.hero__inner{
  position:relative;max-width:1200px;margin:0 auto;
  padding:72px 32px 96px;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.hero__eyebrow{margin-bottom:16px}
.hero h1{margin-bottom:20px}
.hero__sub{font-size:18px;line-height:30px;color:var(--c-text-2);max-width:520px;margin-bottom:24px}
.trust-row{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:32px}
.trust{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2)}
.trust i{font-size:15px;color:var(--c-primary)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:16px}
.hero__note{font-size:13px;line-height:20px;color:var(--c-text-3)}
.mock{position:relative;display:flex;justify-content:center;align-items:center;min-height:420px}
.mock::before{
  content:"";position:absolute;inset:-20px 0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;opacity:.08;border-radius:var(--r-mock);
}
.mock__device{
  position:relative;z-index:2;width:230px;aspect-ratio:9 / 19.5;border-radius:var(--r-mock);
  overflow:hidden;background:#fff;border:1px solid var(--c-border);
  box-shadow:var(--shadow-2);transform:rotate(3deg);
}
.mock__device img{width:100%;height:100%;object-fit:cover}
.mock__float{
  position:absolute;left:0;bottom:36px;z-index:3;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--shadow-2);padding:14px 18px;min-width:150px;
}
.mock__float div+div{margin-top:10px;padding-top:10px;border-top:1px solid var(--c-line)}
.mock__float span{display:block;font-size:12px;line-height:18px;color:var(--c-text-3)}
.mock__float strong{font-family:var(--ff-num);font-size:17px;font-weight:600;color:var(--c-primary);letter-spacing:-.01em}

/* ============ 板块标题 ============ */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;flex-wrap:wrap}
.sec-head p{margin:8px 0 0;font-size:15px;line-height:26px;color:var(--c-text-2);max-width:600px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;white-space:nowrap}
.link-more i{font-size:12px;transition:transform 180ms ease}
.link-more:hover i{transform:translateX(3px)}

/* ============ 价值区（1 大 + 3 小） ============ */
.value-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:stretch}
.value-hero{
  background:var(--c-primary-soft);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:36px 32px;display:flex;flex-direction:column;justify-content:space-between;gap:28px;
}
.value-hero__num{font-family:var(--ff-num);font-size:56px;line-height:1;font-weight:700;color:var(--c-primary);letter-spacing:-.02em}
.value-hero h3{font-size:21px;line-height:32px;margin:16px 0 10px}
.value-hero p{font-size:15px;line-height:26px;color:var(--c-text-2);margin:0}
.value-hero__tag{display:flex;flex-wrap:wrap;gap:8px}
.value-list{display:flex;flex-direction:column;gap:16px}
.value-mini{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:20px;
  transition:box-shadow 180ms ease,transform 180ms ease;
}
.value-mini:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.value-mini__ico{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:var(--c-primary-soft);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:16px;
}
.value-mini h3{font-size:16px;line-height:24px;margin-bottom:4px}
.value-mini p{font-size:14px;line-height:24px;color:var(--c-text-2);margin:0}

/* ============ 截图轮播 ============ */
.shots{position:relative;background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.shots__wrap{position:relative;max-width:1200px;margin:0 auto;padding:0 32px}
.shots__track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:8px 0 28px;scrollbar-width:none;-ms-overflow-style:none;
}
.shots__track::-webkit-scrollbar{display:none}
.shot{flex:0 0 220px;scroll-snap-align:start}
.shot__screen{
  width:220px;height:400px;border-radius:16px;overflow:hidden;background:var(--c-primary-soft);
  border:1px solid var(--c-border);box-shadow:var(--shadow-1);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:28px;
  transition:box-shadow 180ms ease,transform 180ms ease;
}
.shot:hover .shot__screen{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.shot__screen img{width:100%;height:100%;object-fit:cover}
.shot h3{font-size:15px;line-height:24px;margin:16px 0 4px}
.shot p{font-size:13px;line-height:22px;color:var(--c-text-2);margin:0}
.shots__nav{display:flex;gap:12px}
.shots__arrow{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--c-border);
  box-shadow:var(--shadow-2);color:var(--c-text-2);display:flex;align-items:center;justify-content:center;
  font-size:15px;transition:background-color 180ms ease,color 180ms ease,transform 180ms ease;
}
.shots__arrow:hover{background:var(--c-primary);color:#fff;transform:translateY(-1px)}
.shots__bar{height:2px;background:var(--c-line);border-radius:2px;overflow:hidden;margin-bottom:4px}
.shots__bar span{display:block;height:100%;width:12%;background:var(--c-primary);border-radius:2px;transition:width 160ms ease}

/* ============ 系统要求 ============ */
.sys{background:var(--c-bg);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.sys__grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:28px;display:flex;flex-direction:column;
}
.spec__head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.spec__ico{
  width:40px;height:40px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.spec__head h3{font-size:17px;line-height:26px}
.spec dl{display:grid;grid-template-columns:auto 1fr;gap:14px 16px;margin:20px 0 0;font-size:14px;line-height:24px}
.spec dt{color:var(--c-text-3)}
.spec dd{text-align:right;color:var(--c-text);font-weight:500}
.spec__link{margin-top:auto;padding-top:20px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* ============ 评价墙 ============ */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:24px;display:flex;flex-direction:column;gap:16px;
  transition:box-shadow 180ms ease,transform 180ms ease;
}
.review:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.stars{color:var(--c-accent);font-size:13px;letter-spacing:3px}
.review p{font-size:15px;line-height:26px;color:var(--c-text-2);margin:0;flex:1}
.review__who{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--c-line)}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 40px;
}
.review__who strong{display:block;font-size:14px;font-weight:600;line-height:20px}
.review__who em{display:block;font-style:normal;font-size:13px;line-height:20px;color:var(--c-text-3)}

/* ============ CTA 带 ============ */
.cta-band{background:var(--c-primary-soft);padding:80px 0}
.cta-band__inner{max-width:860px;margin:0 auto;text-align:center}
.cta-band h2{margin-bottom:12px}
.cta-band__lead{font-size:16px;line-height:28px;color:var(--c-text-2);margin-bottom:32px}
.cta-actions{display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap}
.qr{
  width:120px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:10px;text-align:center;
}
.qr__box{
  width:100px;height:100px;margin:0 auto;border-radius:8px;background:var(--c-primary-soft);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:34px;
}
.qr small{display:block;font-size:12px;line-height:20px;color:var(--c-text-3);margin-top:6px}
.cta-band__foot{margin-top:28px;font-size:14px;line-height:24px;color:var(--c-text-2)}
.cta-band__tip{margin-top:10px;font-size:13px;line-height:22px;color:var(--c-text-3)}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;color:inherit;
  transition:box-shadow 180ms ease,transform 180ms ease,border-color 180ms ease;
}
.post-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#DCE7F3;color:inherit}
.post-card__cover{
  aspect-ratio:16 / 9;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:26px;overflow:hidden;
}
.post-card__cover img{width:100%;height:100%;object-fit:cover}
.post-card__body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-card__title{
  font-size:17px;line-height:26px;font-weight:600;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__sum{
  font-size:14px;line-height:24px;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-3);
}
.post-card__meta i{font-size:12px;color:var(--c-primary);transition:transform 180ms ease}
.post-card:hover .post-card__meta i{transform:translateX(3px)}
.empty-state{
  text-align:center;padding:48px 24px;background:#fff;border:1px dashed var(--c-border-strong);
  border-radius:var(--r-card);
}
.empty-state i{font-size:48px;color:var(--c-text-3);display:block;margin-bottom:16px}
.empty-state p{font-size:14px;color:var(--c-text-3);margin-bottom:8px}
.empty-state a{font-size:14px;font-weight:600}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--c-line)}
.faq__item:first-child{border-top:1px solid var(--c-line)}
.faq__item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 40px 22px 0;font-size:16px;font-weight:600;line-height:26px;color:var(--c-text);
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{
  content:"\25BE";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--c-text-3);transition:transform 200ms ease,color 200ms ease;
}
.faq__item[open] summary{color:var(--c-primary)}
.faq__item[open] summary::after{transform:translateY(-50%) rotate(180deg);color:var(--c-primary)}
.faq__item .faq__body{padding:0 40px 24px 0;font-size:15px;line-height:28px;color:var(--c-text-2)}
.faq__item .faq__body p{margin-bottom:12px}
.faq__item .faq__body p:last-child{margin-bottom:0}

/* ============ 页脚 ============ */
.site-foot{background:#F0F5FB;border-top:1px solid var(--c-line);color:var(--c-text-2);margin-top:auto}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 40px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-text{font-size:15px}
.foot-col p{font-size:14px;line-height:24px;color:var(--c-text-2);margin:0}
.foot-col h4{font-size:15px;line-height:24px;font-weight:600;color:var(--c-text);margin-bottom:16px}
.foot-list{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:24px}
.foot-list a{color:var(--c-text-2)}
.foot-list a:hover{color:var(--c-primary)}
.foot-list span{color:var(--c-text-2)}
.foot-bottom{
  border-top:1px solid var(--c-line);padding:18px 0;font-size:13px;line-height:22px;
  color:var(--c-text-3);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .hero__inner{gap:40px}
}
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar:72px}
  .side-nav__brand{justify-content:center;padding:0}
  .side-nav__brand .brand-text{display:none}
  .side-nav__menu{align-items:center}
  .nav-item{justify-content:center;padding:0;width:48px}
  .nav-item .nav-label{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:#16202B;color:#fff;font-size:12px;line-height:20px;padding:4px 10px;border-radius:6px;
    white-space:nowrap;opacity:0;visibility:hidden;pointer-events:none;transition:opacity 160ms ease;
    z-index:90;font-weight:500;
  }
  .nav-item:hover .nav-label{opacity:1;visibility:visible}
  .nav-item.is-active::before{top:12px;bottom:12px}
  .side-nav__foot .btn{width:44px;padding:0;margin:0 auto}
  .side-nav__foot .btn span{display:none}
  .side-nav__ver{font-size:11px}
}
@media (max-width:1023px){
  :root{--sidebar:0px}
  .side-nav{display:none}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .page-bar{top:56px;padding:0 20px}
  .hero__inner{grid-template-columns:1fr;gap:48px;padding:48px 20px 56px}
  .mock{min-height:0;padding:8px 0 24px}
  .mock__float{left:50%;transform:translateX(-50%);bottom:0}
  .container{padding:0 20px}
  .shots__wrap{padding:0 20px}
  .value-grid{grid-template-columns:1fr}
  .sys__grid{grid-template-columns:1fr}
  .reviews{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px}
}
@media (max-width:767px){
  h1{font-size:28px;line-height:36px}
  h2{font-size:22px;line-height:30px}
  .section{padding:48px 0}
  .section--tight{padding:40px 0}
  .hero__sub{font-size:16px;line-height:28px}
  .hero__actions{gap:12px}
  .hero__actions .btn{flex:1 1 160px}
  .cta-band{padding:48px 0}
  .cta-band__inner{padding:0}
  .reviews{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .shots__arrow{display:none}
  .shots__track{padding-bottom:20px}
  .shot{flex:0 0 200px}
  .shot__screen{width:200px;height:364px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .faq__item .faq__body{padding-right:0}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .page-bar{padding:0 16px;font-size:12px}
  .shots__wrap{padding:0 16px}
  .mock__device{width:200px}
  .value-hero{padding:28px 22px}
  .value-hero__num{font-size:44px}
  .spec{padding:22px}
  .spec dl{grid-template-columns:1fr;gap:4px 0}
  .spec dd{text-align:left;margin-bottom:10px}
  .sec-head{margin-bottom:24px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: article */
:root{
  --c-primary:#0E5AA7;
  --c-primary-dark:#083E75;
  --c-primary-light:#E8F1FA;
  --c-accent:#FF7A1A;
  --c-accent-hover:#E96A0A;
  --c-cyan:#12A594;
  --c-text:#16202B;
  --c-text-2:#56637A;
  --c-text-3:#8A94A6;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E3EAF3;
  --c-border:#EDF2F8;
  --ff:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r-card:12px;
  --r-btn:10px;
  --r-input:8px;
  --r-badge:999px;
  --shadow-1:0 2px 8px rgba(16,42,74,.06);
  --shadow-2:0 10px 30px rgba(16,42,74,.10);
  --side-w:232px;
  --bp-sm:640px;
  --bp-md:1024px;
  --bp-lg:1280px;
  --bp-xl:1440px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:28px;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
hr{border:0;border-top:1px solid var(--c-line);margin:0;}
::selection{background:#CFE3F7;color:var(--c-primary-dark);}
:focus-visible{outline:2px solid rgba(14,90,167,.35);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn--lg{height:48px;padding:0 28px;font-size:16px;}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-1);}
.btn--primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--accent{background:var(--c-accent);color:#fff;box-shadow:0 6px 18px rgba(255,122,26,.24);}
.btn--accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--ghost{background:#fff;border-color:#C9D8E8;color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-bg);border-color:var(--c-primary);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn--block{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:2px 10px;border-radius:var(--r-badge);
  font-size:13px;line-height:20px;font-weight:600;
  background:var(--c-primary-light);color:var(--c-primary);
}
.badge--soft{background:#F1F5FA;color:var(--c-text-2);font-weight:500;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-badge);background:#fff;border:1px solid var(--c-border);
  font-size:13px;color:var(--c-text-2);transition:all .18s ease;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-light);}

/* ---------- 左侧 App Shell ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--c-card);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:50;
}
.side-nav__brand{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--c-line);color:var(--c-text);
}
.side-nav__brand:hover{color:var(--c-primary);}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:8px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.brand-name{font-size:15px;font-weight:700;line-height:1.25;}
.brand-name small{display:block;font-size:11px;font-weight:500;color:var(--c-text-3);letter-spacing:.04em;}
.side-nav__menu{display:flex;flex-direction:column;gap:4px;padding:16px 12px;flex:1 1 auto;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--c-text-2);
  transition:background .18s ease,color .18s ease;
}
.nav-item i{width:20px;text-align:center;font-size:15px;color:var(--c-text-3);transition:color .18s ease;}
.nav-item:hover{background:var(--c-bg);color:var(--c-primary);}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}
.nav-item.is-active i{color:var(--c-primary);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:12px;width:3px;height:24px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.side-nav__foot{padding:16px 12px 20px;border-top:1px solid var(--c-line);}
.ver-note{margin-top:10px;font-size:12px;line-height:20px;color:var(--c-text-3);text-align:center;}

/* ---------- 移动端顶栏 / 抽屉 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:60;
  background:#fff;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-text);min-width:0;}
.mobile-brand__text{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.mobile-brand__text small{font-size:11px;font-weight:500;color:var(--c-text-3);margin-left:4px;}
.mobile-toggle{
  width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:18px;background:var(--c-primary-light);
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:#fff;z-index:90;
  display:flex;flex-direction:column;border-right:1px solid var(--c-line);
  transform:translateX(-100%);transition:transform .24s ease;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{
  height:60px;display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid var(--c-line);
}
.drawer__close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;color:var(--c-text-2);font-size:18px;border-radius:10px;}
.drawer__close:hover{background:var(--c-bg);color:var(--c-primary);}
.drawer__menu{display:flex;flex-direction:column;gap:4px;padding:16px 12px;flex:1 1 auto;}
.drawer__foot{padding:16px 16px 24px;border-top:1px solid var(--c-line);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,25,45,.45);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 主区域 ---------- */
.main-wrap{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;background:var(--c-bg);}
.topbar{
  position:sticky;top:0;z-index:40;height:48px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.topbar__inner{height:48px;display:flex;align-items:center;}
.crumbs{
  display:flex;align-items:center;gap:8px;font-size:13px;line-height:20px;color:var(--c-text-3);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;
}
.crumbs a{color:var(--c-text-2);}
.crumbs a:hover{color:var(--c-primary);}
.crumb-sep{color:#C6D2E1;}
.crumb-cur{color:var(--c-text-3);overflow:hidden;text-overflow:ellipsis;max-width:52vw;}

/* ---------- 文章页头 ---------- */
.post-container{padding-top:36px;padding-bottom:64px;}
.post-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
.post-main{max-width:760px;min-width:0;}
.post-head{
  position:relative;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:32px 32px 28px;overflow:hidden;
}
.post-head::before{
  content:"";position:absolute;top:0;left:32px;width:56px;height:4px;
  border-radius:0 0 4px 4px;background:var(--c-accent);
}
.post-badges{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:16px;}
.post-title{
  font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.01em;
  color:var(--c-text);margin-bottom:16px;
}
.post-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;line-height:22px;color:var(--c-text-3);}
.post-meta i{margin-right:5px;color:#A9B6C7;}
.post-meta .dot{color:#CBD6E3;}
.rule{margin-top:24px;border-top:1px solid var(--c-line);}

/* ---------- 正文排版 ---------- */
.post-body{
  background:#fff;border:1px solid var(--c-border);border-top:0;
  border-radius:0 0 var(--r-card) var(--r-card);
  padding:32px;font-size:16px;line-height:28px;color:var(--c-text);
  overflow-wrap:break-word;
}
.post-body > *:first-child{margin-top:0;}
.post-body p{margin:0 0 20px;}
.post-body h2{
  position:relative;font-size:22px;line-height:32px;font-weight:700;
  padding-left:14px;margin:40px 0 16px;color:var(--c-text);
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.post-body h3{font-size:18px;line-height:28px;font-weight:600;margin:28px 0 12px;}
.post-body h4{font-size:16px;font-weight:600;margin:22px 0 10px;color:var(--c-text-2);}
.post-body ul,.post-body ol{margin:0 0 20px;padding:0;}
.post-body li{position:relative;padding-left:20px;margin-bottom:10px;}
.post-body ul li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;
  border-radius:2px;background:var(--c-primary);
}
.post-body ol{counter-reset:pl;}
.post-body ol li{counter-increment:pl;}
.post-body ol li::before{
  content:counter(pl);position:absolute;left:0;top:4px;
  font-size:12px;font-weight:700;color:var(--c-primary);
}
.post-body a{color:var(--c-primary);border-bottom:1px solid rgba(14,90,167,.28);}
.post-body a:hover{color:var(--c-primary-dark);border-bottom-color:var(--c-primary-dark);}
.post-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--c-primary-light);
  border-left:4px solid var(--c-primary);border-radius:0 10px 10px 0;
  font-size:15px;line-height:26px;font-style:italic;color:var(--c-text-2);
}
.post-body img{width:100%;height:auto;border-radius:10px;margin:24px 0;}
.post-body figure{margin:24px 0;}
.post-body figcaption{font-size:13px;line-height:22px;color:var(--c-text-3);text-align:center;margin-top:10px;}
.post-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:24px 0;
  border:1px solid var(--c-line);border-radius:12px;overflow:hidden;font-size:14px;
}
.post-body th{background:var(--c-primary-light);color:var(--c-primary-dark);text-align:left;padding:12px 14px;font-weight:600;}
.post-body td{padding:12px 14px;border-top:1px solid var(--c-line);color:var(--c-text-2);}
.post-body tbody tr:nth-child(even) td{background:#FAFCFF;}
.post-body code{background:#F1F5FA;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--c-primary-dark);}

/* ---------- 空态 ---------- */
.empty-state{padding:48px 0;text-align:center;}
.empty-state i{font-size:48px;color:#C6D2E1;display:block;margin-bottom:16px;}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:20px;}

/* ---------- 右侧固定栏 ---------- */
.post-side{display:none;}
.side-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:20px;
}
.side-card + .side-card{margin-top:20px;}
.side-card__title{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-text-3);
  text-transform:uppercase;margin-bottom:14px;
}
.side-list li + li{margin-top:2px;}
.side-list a{
  display:block;padding:9px 10px;border-left:3px solid transparent;border-radius:0 8px 8px 0;
  font-size:14px;line-height:22px;color:var(--c-text-2);
}
.side-list a:hover{background:var(--c-bg);color:var(--c-primary);}
.side-list a.is-current{border-left-color:var(--c-primary);background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}
.side-meta li{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;font-size:13px;line-height:22px;color:var(--c-text-2);padding:6px 0;}
.side-meta li span:first-child{color:var(--c-text-3);flex:0 0 auto;}

/* ---------- 标签 / 上下篇 ---------- */
.post-tags{
  background:#fff;border:1px solid var(--c-border);border-top:0;
  border-radius:0 0 var(--r-card) var(--r-card);
  padding:22px 32px 26px;display:flex;align-items:center;flex-wrap:wrap;gap:10px;
}
.tags-label{font-size:13px;color:var(--c-text-3);margin-right:2px;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:32px;}
.post-nav__card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.post-nav__card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.post-nav__dir{font-size:13px;color:var(--c-text-3);display:flex;align-items:center;gap:8px;}
.post-nav__card--next .post-nav__dir{justify-content:flex-end;}
.post-nav__t{font-size:15px;font-weight:600;color:var(--c-text);line-height:24px;}
.post-nav__card--next{text-align:right;}

/* ---------- 相关推荐 ---------- */
.post-extra{margin-top:56px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.sec-title{font-size:22px;line-height:32px;font-weight:700;color:var(--c-text);}
.link-more{font-size:14px;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{color:var(--c-primary-dark);gap:10px;}
.news-grid{margin-bottom:-24px;}
.news-grid > .cell{margin-bottom:24px;}
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;
  border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);color:var(--c-text);
  transition:box-shadow .18s ease,transform .18s ease;
}
.news-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);color:var(--c-text);}
.news-card__cover{position:relative;aspect-ratio:16/9;background:var(--c-primary-light);overflow:hidden;}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-card__cover img{transform:scale(1.04);}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.news-card__title{
  font-size:17px;line-height:26px;font-weight:600;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__desc{
  font-size:14px;line-height:24px;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
.news-card__foot i{color:var(--c-primary);}

/* ---------- CTA 带 ---------- */
.cta-band{margin-top:64px;background:var(--c-primary-light);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.cta-band__inner{padding:64px 24px;text-align:center;}
.cta-band h2{font-size:26px;line-height:36px;font-weight:700;color:var(--c-text);margin-bottom:12px;}
.cta-band p.lead{font-size:15px;line-height:26px;color:var(--c-text-2);max-width:560px;margin:0 auto 28px;}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;}
.qr-card{
  display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:10px 18px 10px 10px;box-shadow:var(--shadow-1);
  cursor:pointer;transition:box-shadow .18s ease,transform .18s ease;
}
.qr-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.qr-box{
  width:44px;height:44px;border-radius:10px;background:var(--c-primary-light);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:20px;
}
.qr-text{font-size:14px;font-weight:600;color:var(--c-text);text-align:left;line-height:20px;}
.qr-text small{display:block;font-size:12px;font-weight:400;color:var(--c-text-3);}
.cta-note{margin-top:24px;font-size:13px;line-height:22px;color:var(--c-text-3);}

/* ---------- 页脚 ---------- */
.site-foot{background:#F0F5FB;border-top:1px solid var(--c-line);margin-top:auto;}
.foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;gap:40px;
  padding:56px 0 40px;
}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand .brand-text{font-size:15px;font-weight:700;color:var(--c-text);line-height:1.25;}
.foot-brand .brand-text small{display:block;font-size:11px;font-weight:500;color:var(--c-text-3);letter-spacing:.04em;}
.foot-col p{font-size:14px;line-height:24px;color:var(--c-text-2);max-width:280px;}
.foot-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:16px;}
.foot-list li{margin-bottom:10px;}
.foot-list a,.foot-list span{font-size:14px;line-height:24px;color:var(--c-text-2);}
.foot-list a:hover{color:var(--c-primary);}
.foot-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;line-height:22px;color:var(--c-text-3);
}

/* ---------- 二维码弹窗 ---------- */
.reveal.qr-modal{
  border:0;border-radius:16px;box-shadow:var(--shadow-2);padding:32px;
  max-width:360px;background:#fff;text-align:center;
}
.qr-modal h3{font-size:18px;font-weight:700;color:var(--c-text);margin-bottom:18px;}
.qr-large{
  width:180px;height:180px;margin:0 auto 18px;border-radius:14px;
  background:var(--c-primary-light);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:76px;
}
.qr-modal p{font-size:13px;line-height:22px;color:var(--c-text-3);margin-bottom:20px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .side-nav{width:72px;}
  .side-nav__brand{padding:0;justify-content:center;}
  .side-nav__brand .brand-name{display:none;}
  .side-nav__menu{padding:16px 10px;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item .nav-label{display:none;}
  .nav-item i{width:auto;font-size:17px;}
  .side-nav__foot{padding:12px 10px 18px;}
  .side-nav__foot .btn span{display:none;}
  .side-nav__foot .btn{padding:0;height:44px;}
  .ver-note{display:none;}
  .main-wrap{margin-left:72px;}
}
@media (min-width:1280px){
  .post-layout{grid-template-columns:minmax(0,1fr) 200px;gap:56px;}
  .post-side{display:block;position:sticky;top:88px;align-self:start;}
}
@media (max-width:1023px){
  .side-nav{display:none;}
  .main-wrap{margin-left:0;padding-top:56px;}
  .mobile-bar{display:flex;}
  .topbar{top:56px;}
  .post-container{padding-top:24px;padding-bottom:48px;}
  .post-head{padding:26px 22px 22px;}
  .post-head::before{left:22px;}
  .post-title{font-size:26px;line-height:1.35;}
  .post-body{padding:24px 22px;font-size:15.5px;}
  .post-tags{padding:18px 22px 22px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav__card--next{text-align:left;}
  .post-nav__card--next .post-nav__dir{justify-content:flex-start;}
  .cta-band__inner{padding:48px 24px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;padding:44px 0 32px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .news-grid > .cell{margin-bottom:20px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .qr-card{justify-content:center;}
}
@media (max-width:520px){
  .post-title{font-size:23px;line-height:1.38;}
  .post-body{padding:20px 18px;}
  .post-body h2{font-size:19px;line-height:28px;}
  .crumb-cur{max-width:38vw;}
  .cta-band h2{font-size:21px;line-height:30px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E5AA7;
  --c-primary-dark:#083E75;
  --c-primary-light:#E8F1FA;
  --c-accent:#FF7A1A;
  --c-accent-hover:#E96A0A;
  --c-cyan:#12A594;
  --c-text:#16202B;
  --c-text-2:#56637A;
  --c-text-3:#8A94A6;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E3EAF3;
  --c-border:#EDF2F8;
  --shadow-1:0 2px 8px rgba(16,42,74,.06);
  --shadow-2:0 10px 30px rgba(16,42,74,.10);
  --r-card:12px;
  --r-btn:10px;
  --r-input:8px;
  --r-badge:999px;
  --r-phone:24px;
  --ff:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --side-w:232px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--c-text);letter-spacing:-.01em;line-height:1.3;}
p{margin:0 0 20px;line-height:1.75;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
:focus-visible{outline:2px solid rgba(14,90,167,.35);outline-offset:2px;border-radius:6px;}

/* Foundation 覆盖 */
body,h1,h2,h3,h4,h5,p,a,li,span,div{font-family:var(--ff);}
.grid-x>.cell{min-width:0;}
.button,button.button{background:var(--c-primary);border-radius:var(--r-btn);}
.accordion,.accordion-item,.accordion-title,.accordion-content{background:transparent;border:0;}

/* 布局骨架 */
.off-canvas-content{min-height:100vh;background:var(--c-bg);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section--band{background:#EEF4FB;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section--tight{padding:56px 0;}
.row-gap>.cell{margin-bottom:24px;}
.sec-head{margin-bottom:32px;max-width:760px;}
.sec-head h2{font-size:28px;line-height:1.32;margin-bottom:10px;}
.sec-head p{font-size:15px;color:var(--c-text-2);margin:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.06em;margin-bottom:10px;}
.eyebrow i{font-size:12px;}

/* 侧栏导航 */
.off-canvas.position-left{left:0;}
#sideDrawer{
  position:fixed;top:0;bottom:0;left:0;width:280px;
  display:flex;flex-direction:column;
  background:#fff;border-right:1px solid var(--c-line);
  z-index:100;overflow-y:auto;
  transform:translateX(-100%)!important;
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  box-shadow:none;
}
#sideDrawer.is-open{transform:translateX(0)!important;}
.side-nav__head{
  height:72px;flex:0 0 72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--c-line);
}
.side-nav__brand{display:flex;align-items:center;gap:10px;flex:1;min-width:0;color:var(--c-text);}
.brand-mark{
  flex:0 0 32px;width:32px;height:32px;border-radius:9px;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:14px;
}
.brand-text{font-size:15px;font-weight:700;line-height:1.2;letter-spacing:.01em;white-space:nowrap;}
.brand-text small{display:block;font-size:11px;font-weight:500;color:var(--c-text-3);letter-spacing:.08em;}
.side-nav__close{
  display:none;background:transparent;border:0;color:var(--c-text-3);
  width:36px;height:36px;border-radius:9px;cursor:pointer;font-size:16px;
}
.side-nav__close:hover{background:var(--c-primary-light);color:var(--c-primary);}
.side-nav__menu{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px;border-radius:10px;
  color:var(--c-text-2);font-size:15px;font-weight:500;
  border-left:3px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-item i{width:20px;text-align:center;font-size:15px;}
.nav-item:hover{background:var(--c-bg);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);}
.nav-label{white-space:nowrap;}
.side-nav__foot{padding:16px 16px 22px;border-top:1px solid var(--c-line);}
.ver-note{margin:10px 0 0;font-size:12px;color:var(--c-text-3);text-align:center;line-height:1.6;}
.side-nav__cta{margin-bottom:8px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;line-height:1;
}
.btn i{font-size:14px;}
.btn--primary{background:var(--c-primary);color:#fff;}
.btn--primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--ghost{background:#fff;color:var(--c-text);border-color:#C9D8E8;}
.btn--ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-bg);}
.btn--lg{height:48px;padding:0 28px;font-size:16px;}
.btn--full{width:100%;}
.btn:active{transform:translateY(0);}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;line-height:1;font-weight:600;
  padding:6px 12px;border-radius:var(--r-badge);
  background:var(--c-primary-light);color:var(--c-primary);
}
.badge--accent{background:#FFF1E6;color:var(--c-accent-hover);}
.badge--plain{background:#EFF3F8;color:var(--c-text-2);}

/* 移动顶栏 */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:95;
  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-topbar__brand{display:flex;align-items:center;gap:10px;min-width:0;color:var(--c-text);}
.mobile-topbar__name{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.hamburger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-primary);font-size:17px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.hamburger:hover{background:var(--c-primary-light);border-color:var(--c-primary-light);}

/* 面包屑条 */
.page-bar{
  position:sticky;top:0;z-index:60;height:48px;
  display:flex;align-items:center;
  background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.page-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C3CEDC;}
.crumb .current{color:var(--c-primary);font-weight:600;}
.page-bar__meta{font-size:13px;color:var(--c-text-3);white-space:nowrap;}

/* 分类 Hero */
.page-hero{
  position:relative;overflow:hidden;
  padding:52px 0 56px;
  background-color:#EDF4FB;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(245,248,252,.86),rgba(245,248,252,.96));
}
.page-hero .container{position:relative;z-index:1;}
.page-hero h1{
  font-size:36px;line-height:1.28;letter-spacing:-.01em;
  margin:16px 0 14px;max-width:22em;
}
.page-hero__sub{font-size:17px;color:var(--c-text-2);max-width:640px;margin:0 0 20px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-badge);
  padding:7px 14px;font-size:13px;color:var(--c-text-2);font-weight:500;
}
.hero-points i{color:var(--c-primary);font-size:12px;}

/* 步骤时间线 */
.step-list{list-style:none;margin:0;padding:0;}
.step-item{position:relative;display:flex;gap:20px;padding-bottom:28px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:17px;top:46px;bottom:4px;width:2px;
  background:var(--c-line);
}
.step-item:last-child::before{display:none;}
.step-dot{
  flex:0 0 36px;width:36px;height:36px;border-radius:12px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;
  box-shadow:0 4px 12px rgba(14,90,167,.24);
}
.step-body{
  flex:1;min-width:0;background:var(--c-card);
  border:1px solid var(--c-border);border-left:3px solid transparent;
  border-radius:var(--r-card);padding:20px 24px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.step-body:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-left-color:var(--c-accent);}
.step-body h3{font-size:18px;line-height:1.4;margin-bottom:8px;}
.step-body p{font-size:15px;color:var(--c-text-2);line-height:1.8;margin:0;}
.step-media{
  margin-top:16px;border:1px solid var(--c-border);border-radius:10px;
  overflow:hidden;max-width:320px;background:var(--c-primary-light);
}
.step-media img{width:100%;height:150px;object-fit:cover;}
.step-tip{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;
  font-size:13px;color:var(--c-primary);background:var(--c-primary-light);
  padding:5px 12px;border-radius:var(--r-badge);
}

/* 右侧下载卡 */
.dl-card{
  position:sticky;top:72px;
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-2);
}
.dl-card__head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.dl-card__icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-light);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:18px;
}
.dl-card__head h2{font-size:18px;line-height:1.3;}
.dl-card__head p{font-size:13px;color:var(--c-text-3);margin:2px 0 0;}
.dl-meta{list-style:none;margin:20px 0 0;padding:0;}
.dl-meta li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px dashed var(--c-line);font-size:14px;
}
.dl-meta li:last-child{border-bottom:0;}
.dl-meta span{color:var(--c-text-3);}
.dl-meta strong{color:var(--c-text);font-weight:600;font-size:14px;text-align:right;}
.dl-card__hint{
  margin-top:18px;padding:12px 14px;border-radius:10px;
  background:var(--c-bg);font-size:13px;color:var(--c-text-2);line-height:1.7;
}
.dl-card__link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;}

/* 准备事项 */
.prep-card{
  height:100%;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:22px 20px;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease;
}
.prep-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.prep-card__icon{
  width:40px;height:40px;border-radius:10px;background:var(--c-primary-light);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  font-size:16px;margin-bottom:14px;
}
.prep-card h3{font-size:16px;margin-bottom:6px;}
.prep-card p{font-size:14px;color:var(--c-text-2);line-height:1.7;margin:0;}

/* 安装方式 */
.way-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease;
}
.way-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.way-card__media{background:var(--c-primary-light);}
.way-card__media img{width:100%;height:200px;object-fit:cover;}
.way-card__body{padding:24px;flex:1;display:flex;flex-direction:column;}
.way-card__body h3{font-size:20px;margin:14px 0 14px;}
.way-list{margin:0 0 22px;}
.way-list li{
  position:relative;padding-left:22px;margin-bottom:10px;
  font-size:15px;color:var(--c-text-2);line-height:1.75;
}
.way-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;
  border-radius:2px;background:var(--c-primary);
}
.way-card--dark{background:var(--c-primary);border-color:var(--c-primary);}
.way-card--dark .way-card__body h3{color:#fff;}
.way-card--dark .way-list li{color:rgba(255,255,255,.86);}
.way-card--dark .way-list li::before{background:var(--c-accent);}
.way-card--dark .badge{background:rgba(255,255,255,.16);color:#fff;}
.way-card--dark .way-card__body{padding:28px 24px;}
.way-card--dark .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.way-card--dark .btn--ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* 版本与适配带 */
.metric{
  height:100%;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);
}
.metric__label{font-size:13px;color:var(--c-text-3);letter-spacing:.06em;margin-bottom:10px;}
.metric__value{font-size:22px;font-weight:700;color:var(--c-primary);letter-spacing:-.01em;margin-bottom:8px;}
.metric__value em{font-style:normal;color:var(--c-accent);}
.metric p{font-size:14px;color:var(--c-text-2);line-height:1.7;margin:0;}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion{margin:0;border-top:1px solid var(--c-line);}
.accordion-item{border-bottom:1px solid var(--c-line);}
.accordion .accordion-title{
  position:relative;display:block;padding:20px 46px 20px 0;
  font-size:16px;font-weight:600;color:var(--c-text);
  background:transparent;border:0;line-height:1.6;
  transition:color .18s ease;
}
.accordion .accordion-title:hover,.accordion .accordion-title:focus{color:var(--c-primary);background:transparent;}
.accordion .accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--c-text-3);transition:transform .2s ease,color .2s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{
  transform:translateY(-50%) rotate(180deg);color:var(--c-primary);
}
.accordion .accordion-content{
  padding:0 46px 20px 0;border:0;background:transparent;
  font-size:15px;line-height:1.85;color:var(--c-text-2);
}
.accordion .accordion-content p{margin:0;}

/* CTA 带 */
.cta-band{
  background:var(--c-primary-light);
  border-top:1px solid var(--c-line);
  padding:64px 0;text-align:center;
}
.cta-band h2{font-size:26px;margin-bottom:12px;}
.cta-band p{font-size:15px;color:var(--c-text-2);max-width:620px;margin:0 auto 26px;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-bottom:18px;}
.cta-note{font-size:13px;color:var(--c-text-3);margin:0;}

/* 页脚 */
.site-foot{background:#F0F5FB;border-top:1px solid var(--c-line);padding:56px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand .brand-text{font-size:15px;font-weight:700;}
.foot-col p{font-size:14px;color:var(--c-text-2);line-height:1.8;margin:0;max-width:300px;}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--c-text);}
.foot-list{list-style:none;margin:0;padding:0;}
.foot-list li{margin-bottom:10px;font-size:14px;color:var(--c-text-2);}
.foot-list a{color:var(--c-text-2);}
.foot-list a:hover{color:var(--c-primary);}
.foot-bottom{
  margin-top:44px;border-top:1px solid var(--c-line);
  padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}

/* 遮罩 */
.js-off-canvas-overlay{background:rgba(10,25,45,.45)!important;}

/* 响应式 */
@media (min-width:1024px){
  .off-canvas-content{margin-left:var(--side-w);}
  #sideDrawer{transform:none!important;width:var(--side-w);}
  .js-off-canvas-overlay{display:none!important;}
  .mobile-topbar{display:none!important;}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--side-w:72px;}
  #sideDrawer{width:72px;}
  .side-nav__head{justify-content:center;padding:0 10px;}
  .side-nav__brand .brand-text{display:none;}
  .side-nav__menu{padding:16px 10px;align-items:center;}
  .nav-item{justify-content:center;padding:0;width:48px;border-left-width:0;border-radius:12px;}
  .nav-item .nav-label{
    position:absolute;left:58px;top:50%;transform:translateY(-50%) translateX(-6px);
    background:var(--c-primary);color:#fff;font-size:13px;font-weight:500;
    padding:6px 12px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease;z-index:10;
  }
  .nav-item:hover .nav-label{opacity:1;transform:translateY(-50%) translateX(0);}
  .nav-item.is-active{background:var(--c-primary-light);}
  .side-nav__foot{padding:16px 12px 22px;}
  .side-nav__cta span{display:none;}
  .side-nav__cta{padding:0;}
  .ver-note{display:none;}
}
@media (max-width:1023px){
  .mobile-topbar{display:flex;}
  .off-canvas-content{padding-top:56px;}
  .side-nav__close{display:flex;align-items:center;justify-content:center;}
  .page-bar{top:56px;}
  .dl-card{position:static;}
  .page-hero{padding:40px 0 44px;}
  .page-hero h1{font-size:28px;}
  .page-hero__sub{font-size:16px;}
  .section{padding:48px 0;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .page-bar__meta{display:none;}
  .sec-head h2{font-size:22px;}
  .page-hero h1{font-size:24px;line-height:1.35;}
  .step-body{padding:18px;}
  .step-item{gap:14px;}
  .step-item::before{left:17px;}
  .way-card__media img{height:170px;}
  .cta-band{padding:52px 0;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:640px){
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions .btn{width:100%;}
  .hero-points span{font-size:12px;}
  .metric__value{font-size:20px;}
}

/* roulang page: category2 */
:root{
  --c-main:#0E5AA7;
  --c-main-d:#083E75;
  --c-main-l:#E8F1FA;
  --c-accent:#FF7A1A;
  --c-accent-d:#E96A0A;
  --c-cyan:#12A594;
  --c-text:#16202B;
  --c-sub:#56637A;
  --c-weak:#8A94A6;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E3EAF3;
  --c-border:#EDF2F8;
  --c-foot:#F0F5FB;
  --r-card:12px;
  --r-btn:10px;
  --r-input:8px;
  --r-pill:999px;
  --sh1:0 2px 8px rgba(16,42,74,.06);
  --sh2:0 10px 30px rgba(16,42,74,.10);
  --ff:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --side:232px;
  --tr:180ms ease;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:28px;
  letter-spacing:.02em;
  color:var(--c-text);
  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:inherit;text-decoration:none;transition:color var(--tr),border-color var(--tr),background-color var(--tr);}
img{display:block;max-width:100%;height:auto;object-fit:cover;}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid rgba(14,90,167,.35);
  outline-offset:2px;
  border-radius:4px;
}
::selection{background:var(--c-main-l);color:var(--c-main-d);}

.wrap{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color var(--tr),border-color var(--tr),color var(--tr),transform var(--tr),box-shadow var(--tr);
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}
.btn-primary{background:var(--c-main);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--c-main-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh1);}
.btn-accent:hover{background:var(--c-accent-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2);}
.btn-ghost{background:#fff;color:var(--c-main);border-color:#C9D8E8;}
.btn-ghost:hover{background:var(--c-bg);color:var(--c-main-d);border-color:var(--c-main);transform:translateY(-1px);}
.btn:active{transform:translateY(0);}

.badge{
  display:inline-block;font-size:13px;line-height:20px;padding:2px 10px;border-radius:var(--r-pill);
  background:var(--c-main-l);color:var(--c-main);font-weight:600;
}
.badge-accent{background:#FFF1E6;color:#C95A0C;}

/* ============ 左侧导航 ============ */
.side-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  z-index:120;
}
.side-brand{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 20px;border-bottom:1px solid var(--c-line);flex:0 0 auto;
}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;
  background:var(--c-main);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;
}
.brand-text{font-size:15px;font-weight:700;line-height:19px;letter-spacing:-.01em;color:var(--c-text);}
.brand-text small{display:block;font-size:12px;font-weight:500;color:var(--c-weak);letter-spacing:.04em;}

.side-nav__menu{padding:18px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--c-sub);
  border-left:3px solid transparent;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr);
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:var(--c-weak);transition:color var(--tr);}
.nav-item:hover{background:var(--c-bg);color:var(--c-main);}
.nav-item:hover i{color:var(--c-main);}
.nav-item.is-active{
  background:var(--c-main-l);color:var(--c-main);font-weight:600;
  border-left:3px solid var(--c-main);
}
.nav-item.is-active i{color:var(--c-main);}
.nav-label{white-space:nowrap;}

.side-foot{padding:16px;border-top:1px solid var(--c-line);flex:0 0 auto;}
.side-ver{display:block;margin-top:10px;font-size:12px;line-height:18px;color:var(--c-weak);text-align:center;}

/* 移动端顶部栏 & 抽屉 */
.top-bar-mobile{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:130;
  background:rgba(255,255,255,.97);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;
  backdrop-filter:saturate(180%) blur(8px);
}
.tb-left{display:flex;align-items:center;gap:10px;}
.tb-toggle{
  width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--c-main);font-size:18px;background:var(--c-main-l);
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,25,45,.45);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:115;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 主内容框架 ============ */
.site-main{margin-left:var(--side);min-height:60vh;}
.site-foot{margin-left:var(--side);}

.crumb-bar{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(180%) blur(8px);
}
.crumb-inner{height:48px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-weak);}
.crumb-inner a:hover{color:var(--c-main);}
.crumb-sep{color:#C9D3E0;}
.crumb-current{color:var(--c-sub);font-weight:600;}

/* ============ 分类页 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  background-color:var(--c-bg);
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(245,248,252,.96) 0%,rgba(245,248,252,.90) 46%,rgba(232,241,250,.72) 100%);
}
.hero-inner{position:relative;z-index:2;padding:44px 32px 46px;min-height:220px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-main);
  background:#fff;border:1px solid #D6E6F6;border-radius:var(--r-pill);
  padding:4px 14px;margin-bottom:16px;
}
.hero-eyebrow i{font-size:12px;}
.hero-title{
  font-size:40px;line-height:48px;font-weight:700;letter-spacing:-.01em;
  color:var(--c-text);max-width:820px;
}
.hero-sub{
  margin-top:14px;font-size:17px;line-height:30px;color:var(--c-sub);max-width:760px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.meta-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:12px 18px;min-width:170px;
}
.meta-num{display:block;font-size:19px;font-weight:700;color:var(--c-main);line-height:26px;}
.meta-txt{display:block;font-size:13px;line-height:20px;color:var(--c-weak);margin-top:2px;}

/* ============ 通用板块 ============ */
.section{padding:72px 0;}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{margin-bottom:32px;}
.section-title{
  position:relative;font-size:28px;line-height:36px;font-weight:700;letter-spacing:-.01em;
  padding-left:14px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-accent);
}
.section-desc{margin-top:12px;font-size:15px;line-height:26px;color:var(--c-sub);max-width:760px;}

/* ============ 版本速览 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.stat-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:24px;transition:box-shadow var(--tr),transform var(--tr);
}
.stat-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);}
.stat-icon{
  width:40px;height:40px;border-radius:10px;background:var(--c-main-l);color:var(--c-main);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px;
}
.stat-label{font-size:13px;color:var(--c-weak);letter-spacing:.04em;}
.stat-value{font-size:22px;line-height:32px;font-weight:700;color:var(--c-text);margin-top:4px;}
.stat-note{font-size:14px;line-height:24px;color:var(--c-sub);margin-top:8px;}

/* ============ 功能对照 ============ */
.fx-panel{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh1);overflow:hidden;
}
.fx-head{
  display:grid;grid-template-columns:minmax(0,1.7fr) 1fr 1fr;
  padding:16px 26px;background:var(--c-main-l);
  font-size:13px;font-weight:600;color:var(--c-main);letter-spacing:.06em;
}
.fx-head span:nth-child(2),.fx-head span:nth-child(3){text-align:center;}
.fx-item{
  display:grid;grid-template-columns:minmax(0,1.7fr) 1fr 1fr;align-items:center;
  padding:18px 26px;border-top:1px solid var(--c-border);
  transition:background-color var(--tr);
}
.fx-item:hover{background:#FBFDFF;}
.fx-item summary{
  list-style:none;display:flex;flex-direction:column;gap:2px;
  pointer-events:none;cursor:default;
}
.fx-item summary::-webkit-details-marker{display:none;}
.fx-name{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:16px;font-weight:600;color:var(--c-text);
}
.fx-caret{display:none;font-size:13px;color:var(--c-weak);transition:transform var(--tr);}
.fx-note{font-size:13px;line-height:21px;color:var(--c-weak);}
.fx-col{display:flex;align-items:center;justify-content:center;gap:6px;}
.fx-label{display:none;font-size:13px;color:var(--c-weak);}
.fx-yes{color:var(--c-main);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.fx-yes i{font-size:13px;}
.fx-no{color:#B4BFCC;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.fx-no i{font-size:13px;}
.fx-tip{
  margin-top:22px;padding:16px 20px;border-radius:var(--r-card);
  background:var(--c-main-l);border-left:4px solid var(--c-main);
  font-size:14px;line-height:24px;color:var(--c-sub);
}
.fx-tip strong{color:var(--c-main-d);font-weight:600;}

/* ============ 版本更新脉络 ============ */
.tl{position:relative;padding-left:8px;}
.tl-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:18px;padding-bottom:28px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:27px;top:38px;bottom:0;width:2px;background:var(--c-line);
}
.tl-item:last-child::before{display:none;}
.tl-dot{
  width:36px;height:36px;border-radius:50%;background:var(--c-main);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  box-shadow:0 0 0 6px #fff;position:relative;z-index:2;
}
.tl-body{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:20px 24px;transition:box-shadow var(--tr),transform var(--tr);
}
.tl-body:hover{box-shadow:var(--sh2);transform:translateY(-2px);}
.tl-tag{
  display:inline-block;font-size:13px;line-height:20px;padding:2px 10px;border-radius:var(--r-pill);
  background:var(--c-main-l);color:var(--c-main);font-weight:600;margin-bottom:10px;
}
.tl-title{font-size:17px;font-weight:600;line-height:26px;color:var(--c-text);}
.tl-text{margin-top:8px;font-size:14px;line-height:25px;color:var(--c-sub);}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh1);overflow:hidden;
  transition:box-shadow var(--tr),transform var(--tr);
}
.scene-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);}
.scene-media{position:relative;aspect-ratio:16/9;background:var(--c-main-l);overflow:hidden;}
.scene-media img{width:100%;height:100%;transition:transform .35s ease;}
.scene-card:hover .scene-media img{transform:scale(1.03);}
.scene-body{padding:22px 24px 26px;}
.scene-title{font-size:17px;font-weight:600;line-height:26px;}
.scene-text{margin-top:8px;font-size:14px;line-height:24px;color:var(--c-sub);}
.scene-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.scene-list li{
  position:relative;padding-left:16px;font-size:14px;line-height:23px;color:var(--c-sub);
}
.scene-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--c-main);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:first-child{border-top:1px solid var(--c-line);}
.faq-q{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;font-size:16px;font-weight:600;line-height:26px;color:var(--c-text);
  cursor:pointer;transition:color var(--tr);
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q:hover{color:var(--c-main);}
.faq-caret{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--c-main-l);color:var(--c-main);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform var(--tr);
}
.faq-item[open] .faq-caret{transform:rotate(180deg);}
.faq-a{padding:0 4px 22px;font-size:15px;line-height:28px;color:var(--c-sub);max-width:820px;}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--c-main-l);border-top:1px solid #D6E6F6;border-bottom:1px solid #D6E6F6;
  padding:80px 0;
}
.cta-inner{text-align:center;}
.cta-title{font-size:26px;line-height:36px;font-weight:700;letter-spacing:-.01em;}
.cta-desc{margin-top:12px;font-size:15px;line-height:26px;color:var(--c-sub);}
.cta-actions{
  margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:16px;
}
.qr-card{
  width:132px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh1);padding:10px;display:flex;flex-direction:column;align-items:center;gap:6px;
  transition:box-shadow var(--tr),transform var(--tr);
}
.qr-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);}
.qr-box{
  width:88px;height:88px;border-radius:10px;background:var(--c-main-l);color:var(--c-main);
  display:flex;align-items:center;justify-content:center;font-size:30px;
}
.qr-tip{font-size:13px;line-height:20px;color:var(--c-sub);}
.cta-note{margin-top:22px;font-size:13px;line-height:22px;color:var(--c-weak);}

/* ============ 页脚 ============ */
.site-foot{background:var(--c-foot);border-top:1px solid var(--c-line);padding:56px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand .brand-mark{background:var(--c-main);}
.foot-col p{font-size:14px;line-height:24px;color:var(--c-sub);max-width:300px;}
.foot-col h4{font-size:15px;font-weight:600;line-height:24px;margin-bottom:14px;color:var(--c-text);}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list li{font-size:14px;line-height:23px;color:var(--c-sub);}
.foot-list a:hover{color:var(--c-main);}
.foot-bottom{
  margin-top:44px;border-top:1px solid var(--c-line);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;line-height:22px;color:var(--c-weak);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--side:72px;}
  .side-brand{justify-content:center;padding:0 8px;}
  .side-brand .brand-text{display:none;}
  .side-nav__menu{padding:18px 10px;}
  .nav-item{justify-content:center;padding:0;gap:0;border-left-width:3px;}
  .nav-item .nav-label{
    position:absolute;left:64px;top:50%;transform:translateY(-50%);
    background:var(--c-text);color:#fff;font-size:13px;font-weight:500;
    padding:5px 12px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity var(--tr);z-index:30;
    box-shadow:var(--sh2);
  }
  .nav-item:hover .nav-label{opacity:1;}
  .side-foot{padding:12px 10px;}
  .side-foot .btn{padding:0;font-size:0;}
  .side-foot .btn i{font-size:16px;}
  .side-ver{font-size:11px;line-height:16px;}
  .stat-grid,.scene-grid{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1.6fr 1fr 1fr;}
}

@media (max-width:1023px){
  :root{--side:0px;}
  .site-main,.site-foot{margin-left:0;}
  .site-main{padding-top:56px;}
  .top-bar-mobile{display:flex;}
  .crumb-bar{top:56px;}
  .side-shell{
    width:280px;transform:translateX(-100%);
    transition:transform .22s ease;box-shadow:var(--sh2);
  }
  .side-shell.is-open{transform:translateX(0);}
  .side-brand{justify-content:flex-start;padding:0 20px;}
  .side-brand .brand-text{display:block;}
  .side-nav__menu{padding:18px 12px;}
  .nav-item{justify-content:flex-start;padding:0 14px;gap:12px;}
  .nav-item .nav-label{
    position:static;transform:none;opacity:1;pointer-events:auto;
    background:none;color:inherit;font-size:15px;padding:0;box-shadow:none;font-weight:inherit;
  }
  .side-foot{padding:16px;}
  .side-foot .btn{padding:0 24px;font-size:15px;}
  .side-foot .btn i{font-size:14px;}
  .section{padding:48px 0;}
  .hero-inner{padding:32px 24px 36px;min-height:auto;}
  .hero-title{font-size:29px;line-height:38px;}
  .hero-sub{font-size:16px;line-height:28px;}
  .cta-band{padding:56px 0;}
}

@media (max-width:767px){
  .wrap{padding:0 20px;}
  .stat-grid,.scene-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .foot-col p{max-width:none;}
  .foot-bottom{flex-direction:column;gap:6px;}

  .fx-head{display:none;}
  .fx-panel{background:transparent;border:0;box-shadow:none;overflow:visible;}
  .fx-item{
    display:block;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
    box-shadow:var(--sh1);padding:0;margin-bottom:12px;
  }
  .fx-item:first-child{border-top:1px solid var(--c-border);}
  .fx-item summary{padding:16px 18px;pointer-events:auto;cursor:pointer;flex-direction:column;gap:4px;}
  .fx-caret{display:block;}
  .fx-item[open] .fx-caret{transform:rotate(180deg);}
  .fx-col{
    display:flex;justify-content:space-between;align-items:center;
    padding:12px 18px;border-top:1px solid var(--c-border);
  }
  .fx-label{display:inline;}
  .tl-item{grid-template-columns:44px 1fr;gap:14px;}
  .tl-item::before{left:21px;}
  .tl-dot{width:30px;height:30px;font-size:12px;}
  .cta-title{font-size:22px;line-height:32px;}
  .cta-actions{gap:12px;}
  .cta-actions .btn-lg{width:100%;}
  .qr-card{width:120px;}
}

@media (max-width:519px){
  .hero-title{font-size:25px;line-height:34px;}
  .section-title{font-size:22px;line-height:30px;}
  .section{padding:40px 0;}
  .hero-meta{gap:10px;}
  .meta-item{min-width:calc(50% - 5px);padding:10px 14px;}
  .foot-grid{grid-template-columns:1fr;}
}

/* roulang page: category3 */
:root{
  --c-main:#0E5AA7;
  --c-main-dark:#083E75;
  --c-main-light:#E8F1FA;
  --c-accent:#FF7A1A;
  --c-accent-dark:#E96A0A;
  --c-teal:#12A594;
  --c-text:#16202B;
  --c-text-2:#56637A;
  --c-text-3:#8A94A6;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E3EAF3;
  --c-border:#EDF2F8;
  --ff:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r-card:12px;
  --r-btn:10px;
  --r-input:8px;
  --sh-1:0 2px 8px rgba(16,42,74,.06);
  --sh-2:0 10px 30px rgba(16,42,74,.10);
  --nav-w:232px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--c-text);
  background:var(--c-bg);
  padding-left:var(--nav-w);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0 0 12px;font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--c-text)}
h1{font-size:40px}
h2{font-size:28px}
h3{font-size:20px;font-weight:600}
h4{font-size:16px;font-weight:600}
p{margin:0 0 20px;font-size:16px;line-height:28px;color:var(--c-text)}
a{color:var(--c-main);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-main-dark)}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;margin:0}
table{border-collapse:collapse}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 左侧 App Shell 导航 ---------- */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:#fff;border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:60;
  transition:transform .26s ease,width .2s ease;
}
.side-nav__brand{
  height:72px;flex:0 0 auto;display:flex;align-items:center;gap:11px;
  padding:0 20px;border-bottom:1px solid var(--c-border);
}
.brand-mark{
  width:32px;height:32px;flex:0 0 auto;border-radius:9px;
  background:var(--c-main);color:#fff;display:grid;place-items:center;font-size:14px;
}
.brand-text{font-size:14px;font-weight:700;line-height:1.25;color:var(--c-text);white-space:nowrap}
.brand-text small{display:block;font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--c-text-3)}
.side-nav__menu{flex:1 1 auto;display:flex;flex-direction:column;gap:4px;padding:14px 12px;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  transition:background .18s ease,color .18s ease;
}
.nav-item i{width:20px;text-align:center;font-size:16px;color:var(--c-text-3);transition:color .18s ease}
.nav-item:hover{background:var(--c-bg);color:var(--c-main)}
.nav-item:hover i{color:var(--c-main)}
.nav-item.is-active{background:var(--c-main-light);color:var(--c-main);font-weight:600}
.nav-item.is-active i{color:var(--c-main)}
.nav-item.is-active::before{
  content:"";position:absolute;left:-12px;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-main);
}
.nav-label{white-space:nowrap}
.side-nav__foot{flex:0 0 auto;padding:16px;border-top:1px solid var(--c-border)}
.nav-version{margin:10px 0 0;font-size:12px;line-height:18px;text-align:center;color:var(--c-text-3)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;
  border:1px solid transparent;background:none;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-lg{height:48px;padding:0 28px;font-size:16px}
.btn-block{width:100%}
.btn-primary{background:var(--c-main);color:#fff}
.btn-primary:hover{background:var(--c-main-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;border-color:#C9D8E8;color:var(--c-text-2)}
.btn-ghost:hover{border-color:var(--c-main);color:var(--c-main);background:var(--c-bg)}
.btn:focus-visible{outline:2px solid rgba(14,90,167,.35);outline-offset:2px}

/* ---------- 顶部栏 / 抽屉（移动端） ---------- */
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:56px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:#fff;border-bottom:1px solid var(--c-line);
}
.topbar__brand{display:flex;align-items:center;gap:10px}
.topbar__brand .brand-text{font-size:13px}
.topbar__toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;color:var(--c-text-2);display:grid;place-items:center;font-size:17px;cursor:pointer;
}
.topbar__toggle:hover{color:var(--c-main);border-color:#C9D8E8}
.nav-mask{
  position:fixed;inset:0;z-index:55;background:rgba(10,25,45,.45);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 粘性标题条 ---------- */
.page-bar{
  position:sticky;top:0;z-index:40;height:48px;display:flex;align-items:center;
  padding:0 32px;background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3)}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-main)}
.crumb i{font-size:9px;color:var(--c-text-3)}
.crumb .current{color:var(--c-main);font-weight:600}

/* ---------- Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--c-bg);border-bottom:1px solid var(--c-line);padding:48px 0 52px}
.cat-hero::before{
  content:"";position:absolute;inset:0;opacity:.08;pointer-events:none;
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
}
.cat-hero .container{position:relative;z-index:1}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:16px;
  border-radius:999px;background:#fff;border:1px solid var(--c-line);
  font-size:13px;font-weight:600;color:var(--c-main);
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--c-teal)}
.cat-hero h1{max-width:820px;margin-bottom:14px}
.cat-hero .hero-sub{max-width:760px;font-size:16px;line-height:28px;color:var(--c-text-2);margin:0 0 22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;
  border-radius:999px;background:#fff;border:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-2);
}
.pill i{color:var(--c-main);font-size:12px}

/* ---------- 板块 ---------- */
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section--alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.sec-head{margin-bottom:32px;max-width:760px}
.sec-head h2{margin-bottom:10px}
.sec-head p{margin:0;font-size:15px;line-height:26px;color:var(--c-text-2)}
.sec-kicker{display:block;margin-bottom:10px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-accent)}

/* ---------- 场景快捷入口 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.scene-card{
  display:flex;gap:14px;padding:20px;background:#fff;
  border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#DCE6F1}
.scene-ico{
  width:40px;height:40px;flex:0 0 auto;border-radius:10px;background:var(--c-main-light);
  color:var(--c-main);display:grid;place-items:center;font-size:16px;
}
.scene-card h3{font-size:15px;font-weight:600;margin:0 0 4px;color:var(--c-text)}
.scene-card p{margin:0;font-size:13px;line-height:22px;color:var(--c-text-3)}
.scene-card:hover h3{color:var(--c-main)}

/* ---------- FAQ + 联系卡 ---------- */
.help-layout{margin-left:-12px;margin-right:-12px}
.help-layout > .cell{padding-left:12px;padding-right:12px}
.help-panel{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:8px 28px 12px;
}
.help-panel__head{padding:22px 0 8px}
.help-panel__head h2{font-size:22px;margin-bottom:6px}
.help-panel__head p{margin:0;font-size:14px;line-height:24px;color:var(--c-text-3)}

.accordion.help-acc{border:none;background:transparent;margin:0}
.help-acc .accordion-item{border:none;border-bottom:1px solid var(--c-line);background:transparent}
.help-acc .accordion-item:last-child{border-bottom:none}
.help-acc .accordion-title{
  position:relative;display:block;padding:22px 52px 22px 0;
  font-size:16px;font-weight:600;line-height:1.5;color:var(--c-text);
  background:transparent;border:none;transition:color .18s ease;
}
.help-acc .accordion-title:hover{color:var(--c-main)}
.help-acc .accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;margin:0;border:none;background:none;
  font-size:13px;line-height:1;color:var(--c-text-3);
  transition:transform .22s ease,color .18s ease;
}
.help-acc .accordion-item.is-active .accordion-title{color:var(--c-main)}
.help-acc .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg);color:var(--c-main)}
.help-acc .accordion-content{
  display:none;padding:0 44px 24px 0;border:none;background:transparent;
  font-size:15px;line-height:28px;color:var(--c-text-2);
}
.help-acc .accordion-item.is-active > .accordion-content{display:block}
.help-acc .accordion-content p{margin:0 0 12px;font-size:15px;line-height:28px;color:var(--c-text-2)}
.help-acc .accordion-content p:last-child{margin-bottom:0}
.help-acc .accordion-content ul{margin:0 0 12px}
.help-acc .accordion-content li{
  position:relative;padding-left:18px;margin-bottom:8px;font-size:15px;line-height:26px;color:var(--c-text-2);
}
.help-acc .accordion-content li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--c-main);
}

.contact-card{
  position:sticky;top:72px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:26px 24px 24px;
}
.contact-card h3{font-size:18px;margin-bottom:6px}
.contact-card .cc-sub{margin:0 0 18px;font-size:13px;line-height:22px;color:var(--c-text-3)}
.field{margin-bottom:14px}
.field label{display:block;margin-bottom:6px;font-size:13px;font-weight:600;color:var(--c-text-2)}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;background:#fff;
  border:1px solid #DCE6F1;border-radius:var(--r-input);
  font-size:15px;color:var(--c-text);
  transition:border-color .18s ease,box-shadow .18s ease;
  -webkit-appearance:none;appearance:none;
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--c-text-3) 50%),linear-gradient(135deg,var(--c-text-3) 50%,transparent 50%);
  background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:38px;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#A9B3C2}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-main);box-shadow:0 0 0 4px rgba(14,90,167,.12);
}
.form-msg{margin:12px 0 0;font-size:13px;line-height:22px;color:var(--c-teal);min-height:22px}
.form-note{margin:10px 0 0;font-size:12px;line-height:20px;color:var(--c-text-3)}

/* ---------- 联系方式小卡 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
.mini-card{
  display:flex;gap:14px;align-items:flex-start;padding:20px;background:#fff;
  border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,transform .18s ease;
}
.mini-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.mini-card i{
  width:38px;height:38px;flex:0 0 auto;border-radius:10px;background:var(--c-main-light);
  color:var(--c-main);display:grid;place-items:center;font-size:15px;
}
.mini-card h4{font-size:15px;margin:0 0 4px}
.mini-card p{margin:0;font-size:13px;line-height:22px;color:var(--c-text-3)}

/* ---------- 排查流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-item{
  position:relative;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px 20px;
  transition:box-shadow .18s ease,transform .18s ease;
}
.flow-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.flow-num{
  width:36px;height:36px;border-radius:50%;background:var(--c-main);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;margin-bottom:14px;
}
.flow-item h3{font-size:16px;margin:0 0 8px}
.flow-item p{margin:0;font-size:14px;line-height:24px;color:var(--c-text-2)}

/* ---------- 帮助入口卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .18s ease,transform .18s ease;
}
.entry-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.entry-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--c-main-light)}
.entry-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.entry-card:hover figure img{transform:scale(1.04)}
.entry-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.badge{
  display:inline-block;align-self:flex-start;padding:2px 10px;border-radius:999px;
  background:var(--c-main-light);color:var(--c-main);font-size:13px;line-height:20px;font-weight:600;
}
.entry-body h3{font-size:17px;line-height:26px;margin:0}
.entry-body p{margin:0;font-size:14px;line-height:24px;color:var(--c-text-2)}
.entry-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-main);
}
.entry-card:hover .entry-more{gap:10px}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--c-main-light);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:72px 0;text-align:center;
}
.cta-band h2{font-size:26px;margin-bottom:12px}
.cta-band .cta-sub{max-width:640px;margin:0 auto 26px;font-size:15px;line-height:26px;color:var(--c-text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-note{margin:20px 0 0;font-size:13px;line-height:22px;color:var(--c-text-3)}

/* ---------- 页脚 ---------- */
.site-foot{background:#F0F5FB;border-top:1px solid var(--c-line)}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.2fr;gap:32px;
  padding:56px 0 40px;
}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-col h4{font-size:15px;margin:0 0 14px}
.foot-col p{margin:0;font-size:14px;line-height:24px;color:var(--c-text-2)}
.foot-list li{margin-bottom:10px;font-size:14px;line-height:22px}
.foot-list a{color:var(--c-text-2)}
.foot-list a:hover{color:var(--c-main)}
.foot-list span{color:var(--c-text-2)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:18px 0;border-top:1px solid var(--c-line);
  font-size:13px;line-height:22px;color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:72px}
  .side-nav{width:72px}
  .side-nav__brand{padding:0;justify-content:center}
  .side-nav__brand .brand-text{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item i{width:auto}
  .nav-label{
    position:absolute;left:62px;top:50%;transform:translateY(-50%);
    padding:4px 10px;border-radius:6px;background:#16202B;color:#fff;
    font-size:13px;line-height:20px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .16s ease;z-index:80;
  }
  .nav-item:hover .nav-label{opacity:1}
  .side-nav__foot{padding:14px 0;display:flex;justify-content:center}
  .side-nav__foot .btn{width:44px;height:44px;padding:0;border-radius:12px}
  .side-nav__foot .btn .btn-text{display:none}
  .nav-version{display:none}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}

@media (max-width:1023px){
  :root{--nav-w:0px}
  body{padding-left:0;padding-top:56px}
  .topbar{display:flex}
  .side-nav{
    width:280px;transform:translateX(-100%);
    box-shadow:0 0 40px rgba(10,25,45,.18);
  }
  .side-nav.is-open{transform:translateX(0)}
  .side-nav__foot .btn{width:100%}
  .page-bar{top:56px;padding:0 20px}
  .container{padding:0 20px}
  .cat-hero{padding:36px 0 40px}
  h1{font-size:32px}
  .cat-hero h1{font-size:30px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .contact-card{position:static;margin-top:24px}
  .help-panel{padding:6px 20px 10px}
  .contact-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:56px 0}
}

@media (max-width:767px){
  .scene-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  h1{font-size:28px}
  .cat-hero h1{font-size:26px}
  h2{font-size:22px}
  .sec-head h2{font-size:22px}
  .cta-band h2{font-size:22px}
  .foot-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px}
  .foot-bottom{justify-content:flex-start}
  .page-bar{height:46px;padding:0 16px}
  .crumb{font-size:12px}
  .container{padding:0 16px}
  .help-panel{padding:4px 16px 8px}
  .help-acc .accordion-title{padding:18px 44px 18px 0;font-size:15px}
  .help-acc .accordion-content{padding:0 20px 20px 0}
  .contact-card{padding:22px 18px}
  .cta-actions .btn{width:100%}
}

@media (max-width:519px){
  .hero-tags{gap:8px}
  .pill{height:30px;padding:0 12px;font-size:12px}
  .cta-band .cta-actions{flex-direction:column}
}