/* roulang page: index */
:root{
  --brand:#1F6FB2;
  --brand-dark:#155A93;
  --brand-soft:#EAF3FB;
  --accent:#FF7A59;
  --accent-soft:#FFF1EC;
  --teal:#2BB3A3;
  --bg:#F4F8FC;
  --card:#FFFFFF;
  --ink:#102A43;
  --muted:#5A7085;
  --weak:#829AB1;
  --line:#DDE8F2;
  --divider:#EAF2F8;
  --shadow:0 8px 24px rgba(16,42,67,.08);
  --shadow-hover:0 16px 36px rgba(16,42,67,.12);
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --gap-section:88px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--ink);letter-spacing:0;}
p{margin:0 0 12px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,111,178,.28);outline-offset:2px;border-radius:6px;}

.site-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 22px;
}
@media (min-width:1400px){
  .site-container{max-width:1320px;}
}

/* ---------- Header / Nav ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:1030;
  padding:14px 0 10px;
  background:linear-gradient(180deg,rgba(244,248,252,.96) 0%,rgba(244,248,252,.86) 70%,rgba(244,248,252,0) 100%);
  backdrop-filter:blur(8px);
}
.nav-shell{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow);
  padding:10px 14px;
  display:flex;
  align-items:center;
  gap:14px;
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex-shrink:0;
  padding:4px 6px;
}
.brand-logo{
  width:42px;height:42px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand) 0%,#3E9BD8 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:19px;box-shadow:0 8px 18px rgba(31,111,178,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);}
.brand-sub{font-size:11.5px;color:var(--weak);letter-spacing:.4px;}

.nav-list{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  flex-wrap:nowrap;
}
.nav-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 15px;
  border-radius:14px;
  border:1px solid transparent;
  background:#F7FAFD;
  color:var(--muted);
  font-size:14.5px;
  font-weight:600;
  white-space:nowrap;
  transition:all .22s ease;
}
.nav-pill i{font-size:14px;color:var(--weak);transition:color .22s ease;}
.nav-pill:hover{
  background:var(--brand-soft);
  color:var(--brand);
  border-color:rgba(31,111,178,.18);
  transform:translateY(-1px);
}
.nav-pill:hover i{color:var(--brand);}
.nav-pill.active{
  background:var(--brand-soft);
  color:var(--brand);
  border-color:rgba(31,111,178,.30);
  box-shadow:inset 0 0 0 1px rgba(31,111,178,.06);
}
.nav-pill.active i{color:var(--brand);}

.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:8px;
  padding:11px 20px;
  border-radius:var(--radius-sm);
  background:var(--brand);
  color:#fff;
  font-size:14.5px;
  font-weight:600;
  box-shadow:0 8px 18px rgba(31,111,178,.22);
  transition:all .22s ease;
  border:none;
  white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(31,111,178,.3);}
.nav-cta:active{transform:translateY(0);}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:13px;
  border:1px solid var(--line);
  background:#F7FAFD;
  color:var(--brand);
  font-size:19px;
  align-items:center;justify-content:center;
  margin-left:auto;
}
@media (max-width:991px){
  .nav-list{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
}
.offcanvas{
  background:var(--card);
  border-left:1px solid var(--line);
}
.offcanvas-header{border-bottom:1px solid var(--divider);padding:18px 20px;}
.offcanvas-title{font-size:17px;font-weight:700;color:var(--ink);}
.offcanvas-body{padding:18px 20px;}
.mnav-card{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:14px;
  border:1px solid var(--line);
  background:#F9FBFD;
  margin-bottom:12px;
  color:var(--muted);font-weight:600;font-size:15px;
  min-height:56px;
  transition:all .2s ease;
}
.mnav-card i{color:var(--brand);font-size:17px;width:22px;text-align:center;}
.mnav-card:hover,.mnav-card.active{
  background:var(--brand-soft);
  border-color:rgba(31,111,178,.3);
  color:var(--brand);
}
.mnav-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:15px;border-radius:14px;
  background:var(--accent);color:#fff;font-weight:700;font-size:15.5px;
  box-shadow:0 10px 22px rgba(255,122,89,.3);
  margin-top:6px;
}
.mnav-cta:hover{background:#F2684A;color:#fff;}

/* ---------- Buttons ---------- */
.btn-brand,.btn-outline-brand,.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:600;font-size:16px;
  padding:14px 26px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  cursor:pointer;
  min-height:48px;
  text-align:center;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(31,111,178,.22);}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(31,111,178,.3);}
.btn-brand:active{transform:translateY(0);}
.btn-outline-brand{background:#fff;color:var(--brand);border-color:rgba(31,111,178,.42);}
.btn-outline-brand:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(255,122,89,.28);}
.btn-accent:hover{background:#F2684A;color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,122,89,.36);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:#F7FAFD;color:var(--muted);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);border-color:rgba(31,111,178,.3);}
.btn-sm{padding:10px 18px;font-size:14.5px;min-height:42px;}
.is-disabled{opacity:.55;cursor:not-allowed;transform:none !important;box-shadow:none !important;}

/* ---------- Badges ---------- */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;line-height:1.4;
  background:var(--brand-soft);color:var(--brand-dark);
}
.badge-pill.accent{background:var(--accent-soft);color:#E05B39;}
.badge-pill.teal{background:#E7F7F4;color:#1B8C7F;}
.badge-pill.neutral{background:#F2F6FA;color:var(--muted);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:52px 0 26px;
  background:
    radial-gradient(circle at 12% 8%,rgba(31,111,178,.09) 0%,rgba(31,111,178,0) 46%),
    radial-gradient(circle at 88% 84%,rgba(255,122,89,.10) 0%,rgba(255,122,89,0) 44%),
    linear-gradient(180deg,#F4F8FC 0%,#FFFFFF 100%);
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,111,178,.14) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.35;
  pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,0) 72%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,0) 72%);
}
.hero .site-container{position:relative;z-index:2;}
.hero-inner{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:52px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line);
  color:var(--brand-dark);font-size:13px;font-weight:600;
  box-shadow:0 4px 14px rgba(16,42,67,.06);
  margin-bottom:20px;
}
.hero-eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--teal);}
.hero-title{
  font-size:clamp(32px,5vw,54px);
  line-height:1.18;
  font-weight:700;
  margin-bottom:18px;
}
.hero-title em{font-style:normal;color:var(--brand);}
.hero-lead{
  font-size:17.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:600px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 26px 56px rgba(16,42,67,.16);
  background:var(--card);
}
.hero-shot img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.float-card{
  position:absolute;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-hover);
  padding:12px 16px;
  display:flex;align-items:center;gap:11px;
  font-size:13.5px;color:var(--muted);
  font-weight:600;
}
.float-card i{font-size:16px;}
.float-card strong{display:block;font-size:15px;color:var(--ink);font-weight:700;}
.float-card.fc-1{left:-18px;bottom:34px;}
.float-card.fc-2{right:-14px;top:26px;}
@media (max-width:1180px){
  .float-card.fc-1{left:6px;}
  .float-card.fc-2{right:6px;}
}
@media (max-width:991px){
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero{padding-top:34px;}
  .float-card{position:static;margin-top:12px;width:fit-content;}
  .float-card.fc-1,.float-card.fc-2{left:auto;right:auto;top:auto;bottom:auto;}
}

/* ---------- Sections ---------- */
.section{padding:var(--gap-section) 0;}
.section.alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);
  padding:6px 14px;border-radius:var(--radius-pill);
  margin-bottom:16px;
}
.section-title{font-size:clamp(26px,3.4vw,38px);line-height:1.26;margin-bottom:14px;}
.section-desc{font-size:16.5px;color:var(--muted);line-height:1.85;margin:0;}

@media (max-width:1199px){:root{--gap-section:72px;}}
@media (max-width:991px){:root{--gap-section:60px;}}
@media (max-width:575px){:root{--gap-section:48px;}}

/* ---------- Feature bento ---------- */
.bento{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.bento-side{display:grid;gap:24px;grid-template-rows:1fr 1fr;}
.feature-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,111,178,.3);}
.feature-card .thumb{position:relative;overflow:hidden;}
.feature-card .thumb img{width:100%;object-fit:cover;}
.feature-card.big .thumb img{aspect-ratio:16/9;}
.feature-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,42,67,0) 42%,rgba(16,42,67,.42) 100%);
}
.feature-body{padding:26px 28px 28px;flex:1;display:flex;flex-direction:column;}
.feature-icon{
  width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:19px;margin-bottom:16px;
}
.feature-icon.accent{background:var(--accent-soft);color:#E05B39;}
.feature-icon.teal{background:#E7F7F4;color:#1B8C7F;}
.feature-card h3{font-size:22px;margin-bottom:10px;line-height:1.35;}
.feature-card.big h3{font-size:26px;}
.feature-card p{font-size:15.5px;color:var(--muted);line-height:1.8;margin:0;}
.feature-list{margin-top:18px;display:grid;gap:9px;}
.feature-list li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;color:var(--muted);}
.feature-list i{color:var(--teal);font-size:13px;margin-top:6px;}

.mini-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;display:flex;gap:16px;align-items:flex-start;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,111,178,.3);}
.mini-card img{width:88px;height:88px;border-radius:12px;object-fit:cover;flex-shrink:0;}
.mini-card h3{font-size:19px;margin-bottom:8px;}
.mini-card p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.78;}
@media (max-width:991px){
  .bento{grid-template-columns:1fr;}
  .bento-side{grid-template-rows:auto;}
  .mini-card img{width:74px;height:74px;}
}
@media (max-width:575px){
  .mini-card{flex-direction:column;}
  .mini-card img{width:100%;height:150px;}
}

/* ---------- Carousel ---------- */
.shot-carousel{position:relative;}
.carousel-item-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  height:100%;
}
.carousel-item-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.carousel-item-card .cap{padding:18px 20px;}
.carousel-item-card .cap h4{font-size:17px;margin-bottom:6px;}
.carousel-item-card .cap span{font-size:13.5px;color:var(--weak);}
.carousel-inner .row{gap:0;}
.carousel-indicators-custom{
  display:flex;justify-content:center;gap:10px;
  margin-top:26px;
}
.carousel-indicators-custom button{
  width:38px;height:6px;border-radius:999px;
  background:#CFE1F0;border:none;padding:0;
  transition:all .25s ease;
}
.carousel-indicators-custom button.active{background:var(--accent);width:56px;}
.carousel-arrow{
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);transition:all .22s ease;font-size:16px;
}
.carousel-arrow:hover{background:var(--brand);color:#fff;border-color:var(--brand);}
.shot-nav{
  display:flex;gap:12px;justify-content:flex-end;margin-top:8px;
}
@media (max-width:575px){
  .carousel-arrow{width:42px;height:42px;}
}

/* ---------- Spec cards ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.spec-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px 24px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.spec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.spec-card .icon{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.spec-card h3{font-size:17px;margin-bottom:8px;}
.spec-card p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.75;}
.spec-card .val{font-size:15px;font-weight:700;color:var(--brand-dark);margin-top:10px;display:block;}
@media (max-width:991px){.spec-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.spec-grid{grid-template-columns:1fr;}}

/* ---------- Reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.review-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px;
  display:flex;flex-direction:column;gap:14px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,111,178,.3);}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:46px;height:46px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:16px;
}
.avatar.a2{background:var(--accent-soft);color:#E05B39;}
.avatar.a3{background:#E7F7F4;color:#1B8C7F;}
.review-name{font-size:15px;font-weight:700;}
.review-time{font-size:12.5px;color:var(--weak);}
.stars{color:var(--accent);font-size:13.5px;letter-spacing:2px;}
.review-text{font-size:15px;color:var(--muted);line-height:1.8;margin:0;}
@media (max-width:991px){
  .review-grid{
    grid-template-columns:repeat(3,minmax(280px,1fr));
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    padding-bottom:8px;
  }
  .review-card{scroll-snap-align:start;}
}
@media (max-width:575px){
  .review-grid{grid-template-columns:repeat(3,minmax(260px,1fr));}
}

/* ---------- News / CMS ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px 24px 22px;
  display:flex;flex-direction:column;gap:12px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,111,178,.3);}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-meta .cat{
  font-size:12.5px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);padding:4px 11px;border-radius:var(--radius-pill);
}
.news-meta .time{font-size:12.5px;color:var(--weak);}
.news-card h3{font-size:18px;line-height:1.5;margin:0;}
.news-card h3 a{color:var(--ink);}
.news-card h3 a:hover{color:var(--brand);}
.news-card p{font-size:14.5px;color:var(--muted);line-height:1.78;margin:0;}
.news-more{
  margin-top:auto;padding-top:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:7px;
}
.news-more i{font-size:12px;transition:transform .22s ease;}
.news-more:hover i{transform:translateX(4px);}
.empty-state{
  grid-column:1/-1;
  border:1.5px dashed var(--line);
  border-radius:var(--radius);
  background:#FBFDFF;
  padding:56px 24px;
  text-align:center;
  color:var(--weak);
}
.empty-state i{font-size:34px;color:#C3D8EA;display:block;margin-bottom:14px;}
.empty-state p{margin:0;font-size:15px;color:var(--muted);}
@media (max-width:991px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:575px){.news-grid{grid-template-columns:1fr;}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--line);
  border-radius:var(--radius) !important;
  background:var(--card);
  box-shadow:var(--shadow);
  margin-bottom:14px;
  overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:var(--card);
  border-left:4px solid transparent;
  font-size:17px;font-weight:600;color:var(--ink);
  padding:20px 24px;
  box-shadow:none !important;
  transition:all .22s ease;
}
.accordion-button:not(.collapsed){
  background:var(--brand-soft);
  color:var(--brand-dark);
  border-left-color:var(--brand);
}
.accordion-button::after{
  background-image:none;
  content:"\f4fe";
  font-family:"bootstrap-icons";
  font-size:19px;
  color:var(--brand);
  transform:none;
  transition:transform .28s ease;
  width:auto;height:auto;
  line-height:1;
}
.accordion-button:not(.collapsed)::after{transform:rotate(0deg);content:"\f2ea";}
.accordion-body{
  padding:6px 24px 24px 28px;
  font-size:15px;color:var(--muted);line-height:1.85;
  border-left:4px solid var(--brand-soft);
}
.accordion-body p:last-child{margin-bottom:0;}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,#155A93 0%,#1F6FB2 52%,#3E9BD8 100%);
  border-radius:26px;
  padding:54px 48px;
  color:#fff;
  position:relative;
  overflow:hidden;
  box-shadow:0 26px 56px rgba(21,90,147,.28);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-100px;
  width:320px;height:320px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-band::before{
  content:"";position:absolute;left:-60px;top:-90px;
  width:220px;height:220px;border-radius:50%;
  background:rgba(255,122,89,.18);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.84);font-size:16px;margin:0;line-height:1.85;}
.cta-badges{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px;}
.cta-badges span{
  font-size:12.5px;font-weight:600;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.24);
  padding:6px 13px;border-radius:var(--radius-pill);
  color:#fff;
}
.cta-box{
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.24);
  border-radius:18px;
  padding:24px;
  backdrop-filter:blur(6px);
}
.cta-box .label{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:12px;display:block;}
.version-options{display:grid;gap:10px;margin-bottom:16px;}
.version-options label{
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);
  border-radius:12px;padding:11px 14px;
  font-size:14px;color:#fff;cursor:pointer;
  transition:all .2s ease;min-height:44px;
}
.version-options label:hover{background:rgba(255,255,255,.2);}
.version-options input{accent-color:var(--accent);width:16px;height:16px;}
@media (max-width:991px){
  .cta-band{padding:40px 26px;}
  .cta-inner{grid-template-columns:1fr;}
}

/* ---------- Footer ---------- */
.site-footer{
  background:#102A43;
  color:rgba(255,255,255,.76);
  margin-top:var(--gap-section);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-logo{box-shadow:none;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);margin:0;}
.footer-col h4{
  color:#fff;font-size:15.5px;margin-bottom:18px;font-weight:700;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{
  color:rgba(255,255,255,.7);font-size:14.5px;
  display:inline-flex;align-items:center;gap:8px;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--accent);transform:translateX(3px);}
.footer-col a i{font-size:11px;opacity:.7;}
.footer-dl{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;
  padding:12px 20px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;
  box-shadow:0 10px 22px rgba(255,122,89,.26);
  margin-top:6px;
}
.footer-dl:hover{background:#F2684A;color:#fff;transform:translateY(-2px);}
.footer-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:12px;line-height:1.8;}
.footer-bottom{
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.66);}
.footer-bottom a:hover{color:var(--accent);}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-pill);
  padding:8px 16px;color:#fff;font-size:13.5px;
  min-height:40px;
}
.to-top:hover{background:rgba(255,255,255,.2);color:#fff;}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;padding-bottom:32px;}
}

/* ---------- Mobile sticky bar ---------- */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(16,42,67,.10);
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  gap:10px;
}
.mobile-bar .btn-brand,.mobile-bar .btn-accent{flex:1;padding:12px 14px;font-size:15px;min-height:46px;}
@media (max-width:767px){
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
  .site-footer{margin-top:48px;}
}

/* utility */
.text-teal{color:var(--teal);}
.mb-0{margin-bottom:0;}

/* roulang page: category1 */
:root{
  --brand:#1F6FB2;
  --brand-dark:#155A93;
  --brand-soft:#EAF3FB;
  --accent:#FF7A59;
  --accent-soft:#FFF0EC;
  --teal:#2BB3A3;
  --teal-soft:#E7F7F5;
  --bg:#F4F8FC;
  --surface:#FFFFFF;
  --ink:#102A43;
  --muted:#5A7085;
  --weak:#829AB1;
  --line:#DDE8F2;
  --divider:#EAF2F8;
  --shadow:0 8px 24px rgba(16,42,67,.08);
  --shadow-lg:0 16px 36px rgba(16,42,67,.12);
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;color:var(--ink);}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,111,178,.28);outline-offset:2px;border-radius:8px;}

.site-container{max-width:1200px;margin:0 auto;padding:0 22px;}

/* ============ 顶部导航 ============ */
.site-head{
  position:sticky;top:0;z-index:1030;
  background:rgba(244,248,252,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--divider);
}
.nav-shell{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:0 8px 24px rgba(16,42,67,.07);
  padding:12px 16px;
  margin:14px 0;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-logo{
  width:44px;height:44px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;font-size:22px;
  box-shadow:0 8px 16px rgba(31,111,178,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:11.5px;color:var(--weak);letter-spacing:.4px;}
.nav-list{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;flex-wrap:nowrap;}
.nav-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 15px;border-radius:12px;
  font-size:14.5px;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
  transition:all .22s ease;
}
.nav-pill i{font-size:15px;opacity:.85;}
.nav-pill:hover{color:var(--brand);background:var(--brand-soft);border-color:rgba(31,111,178,.16);}
.nav-pill.active{
  color:var(--brand);background:var(--brand-soft);
  border-color:rgba(31,111,178,.22);font-weight:600;
}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:12px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 8px 18px rgba(31,111,178,.22);
  transition:all .22s ease;white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(21,90,147,.28);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  color:var(--brand);font-size:22px;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--brand-soft);}

/* 移动端抽屉 */
.offcanvas.rounded-panel{
  border:1px solid var(--line);border-radius:20px;
  width:min(340px,88vw);
}
.mobile-nav-list{display:flex;flex-direction:column;gap:10px;}
.mobile-nav-list a{
  display:flex;align-items:center;gap:10px;
  padding:14px 16px;border-radius:14px;
  border:1px solid var(--line);background:#FBFDFF;
  color:var(--muted);font-size:15px;font-weight:500;
}
.mobile-nav-list a i{color:var(--brand);font-size:17px;}
.mobile-nav-list a.active{background:var(--brand-soft);color:var(--brand);border-color:rgba(31,111,178,.24);font-weight:600;}
.mobile-cta{display:block;text-align:center;margin-top:18px;}

/* ============ 页面横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;
  margin-top:26px;border-radius:22px;
  border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow);
}
.hero-bg{
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(244,248,252,.97) 0%,rgba(244,248,252,.86) 42%,rgba(234,243,251,.72) 100%),
             url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-inner{position:relative;padding:52px 46px 46px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--weak);margin-bottom:18px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb i{font-size:11px;opacity:.7;}
.page-hero h1{
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.18;font-weight:700;letter-spacing:-.2px;
  max-width:820px;
}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-desc{
  margin-top:18px;max-width:760px;
  font-size:16.5px;line-height:1.85;color:var(--muted);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-tags span{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.86);border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);font-weight:500;
}
.hero-tags span i{color:var(--brand);}
.hero-tags span.is-accent{border-color:rgba(255,122,89,.35);color:#C24E30;background:var(--accent-soft);}
.hero-tags span.is-accent i{color:var(--accent);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-download{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--radius-sm);
  font-size:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:all .22s ease;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(31,111,178,.22);}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(21,90,147,.26);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:rgba(31,111,178,.35);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-download{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(255,122,89,.28);}
.btn-download:hover{background:#EE6544;color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(238,101,68,.3);}
.btn-download:active{transform:translateY(0);}
.btn-main i,.btn-ghost i,.btn-download i{font-size:17px;}

/* ============ 板块通用 ============ */
.section{padding:74px 0 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;letter-spacing:.6px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(25px,3.4vw,38px);line-height:1.25;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85;}

/* ============ 侧栏锚点卡 ============ */
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  padding:22px;position:sticky;top:110px;
}
.side-card h3{font-size:16px;margin-bottom:6px;}
.side-card .side-note{font-size:13px;color:var(--weak);margin-bottom:16px;}
.anchor-list{display:flex;flex-direction:column;gap:4px;}
.anchor-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 13px;border-radius:11px;
  color:var(--muted);font-size:14.5px;border:1px solid transparent;
  transition:all .2s ease;
}
.anchor-list a span{display:inline-flex;align-items:center;gap:9px;}
.anchor-list a i{color:var(--brand);font-size:15px;}
.anchor-list a small{font-size:12px;color:var(--weak);}
.anchor-list a:hover{background:var(--brand-soft);color:var(--brand);border-color:rgba(31,111,178,.16);}
.anchor-list a.is-on{background:var(--brand-soft);color:var(--brand);border-color:rgba(31,111,178,.2);font-weight:600;}
.side-cta{
  margin-top:20px;padding-top:20px;border-top:1px dashed var(--line);
}
.side-cta p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:14px;}
.side-cta .btn-main{width:100%;justify-content:center;padding:13px 18px;font-size:15px;}

/* ============ 下载卡片列表 ============ */
.dl-list{display:flex;flex-direction:column;gap:20px;}
.dl-card{
  display:grid;grid-template-columns:236px 1fr;gap:24px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  padding:22px;transition:all .24s ease;scroll-margin-top:110px;
}
.dl-card:hover{transform:translateY(-2px);border-color:rgba(31,111,178,.3);box-shadow:var(--shadow-lg);}
.dl-thumb{position:relative;overflow:hidden;border-radius:14px;}
.dl-thumb img{width:100%;height:100%;min-height:158px;object-fit:cover;border-radius:14px;}
.dl-thumb .thumb-badge{
  position:absolute;left:12px;top:12px;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:rgba(16,42,67,.72);color:#fff;font-size:12px;font-weight:600;letter-spacing:.3px;
  backdrop-filter:blur(4px);
}
.dl-body h3{font-size:20px;margin-bottom:10px;}
.dl-body h3 span{color:var(--weak);font-size:14px;font-weight:500;margin-left:8px;}
.dl-body p{color:var(--muted);font-size:15px;line-height:1.8;margin-bottom:14px;}
.spec-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:#F7FAFD;border:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}
.chip i{font-size:13px;color:var(--brand);}
.chip.ok{background:var(--teal-soft);border-color:rgba(43,179,163,.28);color:#1E8579;}
.chip.ok i{color:var(--teal);}
.chip.warm{background:var(--accent-soft);border-color:rgba(255,122,89,.28);color:#C24E30;}
.chip.warm i{color:var(--accent);}
.dl-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.dl-meta{font-size:13px;color:var(--weak);}
.dl-meta b{color:var(--muted);font-weight:600;}
.dl-foot .btn-main,.dl-foot .btn-ghost{padding:11px 18px;font-size:14.5px;}

/* ============ 对比说明条 ============ */
.compare-wrap{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;
}
.compare-head{
  display:grid;grid-template-columns:1.2fr 1fr 1fr 1.1fr;
  gap:12px;padding:16px 26px;background:#F7FAFD;
  border-bottom:1px solid var(--divider);
  font-size:13px;font-weight:600;color:var(--weak);letter-spacing:.4px;
}
.compare-row{
  display:grid;grid-template-columns:1.2fr 1fr 1fr 1.1fr;
  gap:12px;padding:20px 26px;align-items:center;
  border-bottom:1px solid var(--divider);
  transition:background .2s ease;
}
.compare-row:last-child{border-bottom:0;}
.compare-row:hover{background:#FBFDFF;}
.compare-name{display:flex;align-items:center;gap:12px;font-weight:600;color:var(--ink);font-size:15.5px;}
.compare-name i{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;
}
.compare-cell{font-size:14.5px;color:var(--muted);}
.compare-cell b{color:var(--ink);font-weight:600;}

/* ============ 安装流程 ============ */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  padding:26px 22px;position:relative;transition:all .24s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(31,111,178,.28);}
.step-num{
  width:38px;height:38px;border-radius:12px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 8px 16px rgba(31,111,178,.22);
}
.step-card h3{font-size:17px;margin-bottom:9px;}
.step-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0;}

/* ============ FAQ ============ */
.faq-panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  padding:14px 26px 22px;
}
.faq-panel .accordion-item{
  border:0;border-bottom:1px solid var(--divider);
  background:transparent;border-radius:0;
}
.faq-panel .accordion-item:last-child{border-bottom:0;}
.faq-panel .accordion-button{
  background:transparent;box-shadow:none;
  padding:20px 0 20px 18px;
  font-size:16.5px;font-weight:600;color:var(--ink);
  border-radius:12px;
}
.faq-panel .accordion-button::after{
  background:none;content:"\F64D";
  font-family:"bootstrap-icons";font-size:17px;color:var(--brand);
  width:auto;height:auto;transition:transform .28s ease;
}
.faq-panel .accordion-button:not(.collapsed){
  background:var(--brand-soft);color:var(--brand-dark);
  padding-left:18px;border-radius:12px;
}
.faq-panel .accordion-button:not(.collapsed)::after{transform:rotate(180deg);content:"\F2EA";}
.faq-panel .accordion-button:focus{box-shadow:none;}
.faq-panel .accordion-body{
  padding:0 18px 20px 18px;color:var(--muted);
  font-size:15px;line-height:1.85;
}
.faq-panel .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:4px;
  border-radius:4px;background:var(--brand);opacity:.85;
}
.faq-panel .accordion-button{position:relative;}

/* ============ CTA ============ */
.cta-block{
  margin-top:74px;position:relative;overflow:hidden;
  border-radius:22px;border:1px solid var(--line);
  background:linear-gradient(120deg,#102A43 0%,#155A93 58%,#1F6FB2 100%);
  box-shadow:0 20px 44px rgba(16,42,67,.2);
  padding:52px 46px;
}
.cta-block::after{
  content:"";position:absolute;right:-60px;bottom:-70px;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.32),rgba(255,122,89,0) 68%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.3;}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15.5px;line-height:1.85;margin:16px 0 0;max-width:640px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.cta-actions .btn-download{width:100%;justify-content:center;background:var(--accent);}
.cta-actions .btn-ghost{width:100%;justify-content:center;background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.42);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;border-color:#fff;}
.cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.cta-badges span{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  color:rgba(255,255,255,.9);font-size:12.5px;
}
.cta-badges span i{color:#FFB59F;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:74px;background:#102A43;color:#C6D6E4;
  padding:60px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-logo{background:linear-gradient(135deg,#1F6FB2,#2BB3A3);}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#8FA9C0;}
.footer-col p{font-size:14px;line-height:1.85;color:#9DB3C6;margin-bottom:14px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{
  display:inline-flex;align-items:center;gap:8px;
  color:#A8BECF;font-size:14.5px;transition:all .2s ease;
}
.footer-col ul a i{font-size:11px;color:#4E7EA8;}
.footer-col ul a:hover{color:var(--accent);transform:translateX(3px);}
.footer-col ul a:hover i{color:var(--accent);}
.footer-note{font-size:12.5px;color:#7C93A8;letter-spacing:.3px;}
.footer-dl{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 20px;border-radius:var(--radius-sm);
  background:var(--accent);color:#fff;font-weight:600;font-size:14.5px;
  box-shadow:0 8px 18px rgba(255,122,89,.24);margin-bottom:14px;
}
.footer-dl:hover{background:#EE6544;color:#fff;transform:translateY(-2px);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:#8FA9C0;
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:#C6D6E4;font-size:13.5px;}
.to-top:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-pill{padding:9px 12px;font-size:14px;}
  .brand-sub{display:none;}
  .compare-head,.compare-row{grid-template-columns:1.1fr 1fr 1fr 1fr;}
}
@media (max-width:991.98px){
  .nav-list,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-shell{justify-content:space-between;}
  .section{padding-top:58px;}
  .hero-inner{padding:42px 30px 38px;}
  .side-card{position:static;margin-bottom:24px;}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-block{padding:42px 30px;}
}
@media (max-width:767.98px){
  .site-container{padding:0 16px;}
  .dl-card{grid-template-columns:1fr;gap:18px;}
  .dl-thumb img{min-height:190px;}
  .compare-head{display:none;}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
  .compare-cell::before{
    content:attr(data-label) "：";color:var(--weak);font-size:13px;
  }
  .cta-badges{gap:8px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:575.98px){
  .section{padding-top:48px;}
  .hero-inner{padding:32px 20px 30px;}
  .page-hero h1{font-size:26px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{justify-content:center;}
  .step-grid{grid-template-columns:1fr;}
  .faq-panel{padding:10px 18px 18px;}
  .cta-block{padding:34px 22px;}
  .dl-foot{gap:10px;}
  .dl-foot .btn-main,.dl-foot .btn-ghost{width:100%;justify-content:center;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --brand:#1F6FB2;
  --brand-dark:#155A93;
  --brand-soft:#EAF3FB;
  --accent:#FF7A59;
  --accent-soft:#FFF1EC;
  --teal:#2BB3A3;
  --bg:#F4F8FC;
  --surface:#FFFFFF;
  --ink:#102A43;
  --muted:#5A7085;
  --weak:#829AB1;
  --line:#DDE8F2;
  --line-soft:#EAF2F8;
  --shadow-sm:0 8px 24px rgba(16,42,67,.08);
  --shadow-md:0 16px 36px rgba(16,42,67,.12);
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(31,111,178,.18);}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}

/* ---------- 导航 ---------- */
.site-head{position:sticky;top:0;z-index:1030;padding:14px 0 10px;background:linear-gradient(180deg,rgba(244,248,252,.96) 0%,rgba(244,248,252,.82) 70%,rgba(244,248,252,0) 100%);backdrop-filter:blur(8px);}
.nav-shell{
  display:flex;align-items:center;gap:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:12px 16px;
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-logo{
  width:46px;height:46px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand) 0%,#3E93D8 100%);
  color:#fff;font-size:22px;
  box-shadow:0 8px 18px rgba(31,111,178,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);}
.brand-sub{font-size:12px;color:var(--weak);letter-spacing:.2px;}
.nav-list{display:flex;align-items:center;gap:8px;margin:0 0 0 auto;flex-wrap:nowrap;}
.nav-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 14px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;color:var(--muted);
  background:#F8FBFE;border:1px solid transparent;
  white-space:nowrap;transition:all .2s ease;
}
.nav-pill i{font-size:16px;color:var(--weak);transition:color .2s ease;}
.nav-pill:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:#CFE4F5;transform:translateY(-1px);}
.nav-pill:hover i{color:var(--brand);}
.nav-pill.active{background:var(--brand-soft);color:var(--brand-dark);border-color:#C6E0F4;}
.nav-pill.active i{color:var(--brand);}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:var(--radius-sm);
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 8px 18px rgba(31,111,178,.22);
  white-space:nowrap;transition:all .2s ease;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(31,111,178,.28);}
.nav-cta:active{transform:translateY(0);}
.nav-cta:focus-visible,.nav-pill:focus-visible,.btn-primary:focus-visible,.btn-ghost:focus-visible,.footer-dl:focus-visible{outline:3px solid rgba(31,111,178,.28);outline-offset:2px;}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:14px;
  border:1px solid var(--line);background:#F8FBFE;color:var(--brand);
  font-size:22px;line-height:1;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--brand-soft);}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{background:var(--surface);border-left:1px solid var(--line);max-width:88vw;}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line-soft);padding:18px 20px;}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink);}
.drawer-close{border:none;background:#F2F7FC;color:var(--muted);width:40px;height:40px;border-radius:12px;font-size:18px;}
.drawer-close:hover{background:var(--brand-soft);color:var(--brand);}
.nav-drawer .offcanvas-body{padding:16px 20px 26px;display:flex;flex-direction:column;gap:10px;}
.drawer-item{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:var(--radius-sm);
  background:#F8FBFE;border:1px solid var(--line-soft);
  color:var(--muted);font-size:15px;font-weight:600;min-height:48px;
}
.drawer-item i{font-size:18px;color:var(--brand);}
.drawer-item:hover,.drawer-item.active{background:var(--brand-soft);border-color:#CFE4F5;color:var(--brand-dark);}
.drawer-cta{
  margin-top:6px;display:flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 18px;border-radius:var(--radius-sm);
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 10px 22px rgba(255,122,89,.28);
}
.drawer-cta:hover{background:#F2653F;color:#fff;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--weak);}
.crumb a{color:var(--muted);font-weight:500;}
.crumb a:hover{color:var(--brand);}
.crumb i{font-size:11px;color:#B6C7D8;}
.crumb .now{color:var(--ink);font-weight:600;}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;margin-top:18px;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(135deg,#EAF3FB 0%,#F7FBFF 60%,#FFFFFF 100%);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  padding:40px 40px 36px;
}
.article-hero::after{
  content:"";position:absolute;top:-60px;right:-40px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(31,111,178,.14),rgba(31,111,178,0) 70%);
  pointer-events:none;
}
.article-hero::before{
  content:"";position:absolute;inset:0;opacity:.28;pointer-events:none;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
}
.hero-inner{position:relative;z-index:2;max-width:820px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;}
.tag-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:#fff;border:1px solid var(--line);color:var(--muted);
}
.tag-chip.accent{background:var(--accent-soft);border-color:#FFD9CC;color:#D2522F;}
.tag-chip.teal{background:#E9F8F6;border-color:#C6EDE8;color:#1C8C80;}
.hero-title{font-size:clamp(28px,3.6vw,44px);font-weight:700;line-height:1.28;margin-bottom:18px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;font-size:14px;color:var(--muted);}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--brand);font-size:15px;}

/* ---------- 布局 ---------- */
.article-wrap{padding:44px 0 0;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;align-items:start;}
.panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
}
.panel-pad{padding:32px 36px;}
.cover-frame{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm);margin-bottom:28px;}
.cover-frame img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cover-caption{font-size:13px;color:var(--weak);padding:12px 16px;background:#F8FBFE;border-top:1px solid var(--line-soft);}

/* ---------- 正文排版 ---------- */
.article-content{font-size:17.5px;line-height:1.9;color:#1B3A57;}
.article-content > *:first-child{margin-top:0;}
.article-content h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.4;
  margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--brand);
}
.article-content h3{font-size:20px;font-weight:600;margin:28px 0 12px;color:var(--brand-dark);}
.article-content p{margin:0 0 18px;}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:4px;}
.article-content ul li,.article-content ol li{position:relative;padding-left:24px;margin-bottom:10px;}
.article-content ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:8px;height:8px;border-radius:50%;
  background:var(--brand);opacity:.75;
}
.article-content ol{counter-reset:item;}
.article-content ol li::before{
  counter-increment:item;content:counter(item);
  position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-content blockquote{
  margin:24px 0;padding:18px 24px;border-left:4px solid var(--accent);
  background:#FFF7F4;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#6B3A2A;font-size:16.5px;
}
.article-content img{border-radius:var(--radius-sm);margin:22px 0;border:1px solid var(--line);}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15.5px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-content th{background:#F4F9FD;color:var(--brand-dark);font-weight:600;}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(31,111,178,.3);}
.article-content a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
.article-content code{background:#F2F7FC;padding:2px 7px;border-radius:6px;font-size:15px;color:#B2451F;}
.article-content hr{border:none;border-top:1px solid var(--line-soft);margin:32px 0;}
.article-content strong{color:var(--ink);}

/* 标签与分享 */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line-soft);}
.tag-row .label{font-size:14px;color:var(--weak);font-weight:600;}
.tag-link{
  padding:7px 14px;border-radius:999px;font-size:13px;
  background:#F4F9FD;border:1px solid var(--line);color:var(--muted);
}
.tag-link:hover{background:var(--brand-soft);border-color:#CFE4F5;color:var(--brand-dark);}
.share-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.share-btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 16px;border-radius:var(--radius-sm);font-size:14px;
  background:#fff;border:1px solid var(--line);color:var(--muted);
}
.share-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

/* 空态 */
.article-empty{
  text-align:center;padding:64px 24px;border:1px dashed var(--line);
  border-radius:var(--radius);background:#FBFDFF;
}
.article-empty i{font-size:46px;color:#B6C7D8;}
.article-empty h3{font-size:22px;margin:16px 0 8px;}
.article-empty p{font-size:15px;color:var(--muted);margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.side-stack{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:22px 22px 24px;transition:box-shadow .25s ease,transform .25s ease;}
.side-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.side-title{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title i{color:var(--brand);font-size:17px;}
.side-list li{margin-bottom:10px;}
.side-list a{display:flex;align-items:flex-start;gap:9px;font-size:14.5px;color:var(--muted);padding:6px 0;line-height:1.6;}
.side-list a i{color:var(--accent);font-size:13px;margin-top:5px;}
.side-list a:hover{color:var(--brand);}
.dl-card{background:linear-gradient(150deg,#1F6FB2 0%,#155A93 100%);border:none;color:#fff;}
.dl-card .side-title{color:#fff;}
.dl-card .side-title i{color:#FFD3C6;}
.dl-card p{font-size:14px;color:rgba(255,255,255,.82);line-height:1.75;margin-bottom:16px;}
.dl-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:13px 18px;border-radius:var(--radius-sm);
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 10px 22px rgba(255,122,89,.3);
}
.dl-btn:hover{background:#F2653F;color:#fff;transform:translateY(-1px);}
.dl-meta{display:flex;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.7);margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.18);}
.spec-mini li{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:9px 0;border-bottom:1px dashed var(--line-soft);color:var(--muted);}
.spec-mini li:last-child{border-bottom:none;}
.spec-mini b{color:var(--ink);font-weight:600;}

/* ---------- 相关推荐 ---------- */
.section{padding:60px 0 0;}
.section-head{margin-bottom:28px;}
.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand);background:var(--brand-soft);padding:6px 14px;border-radius:999px;margin-bottom:14px;}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;}
.section-desc{margin-top:12px;font-size:15.5px;color:var(--muted);max-width:760px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(31,111,178,.3);}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.post-body h3 a{color:var(--ink);}
.post-body h3 a:hover{color:var(--brand);}
.post-body p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.post-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--weak);}
.post-foot .cat{color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 10px;font-weight:600;}

/* ---------- 返回入口 CTA ---------- */
.cta-band{
  margin-top:60px;border-radius:var(--radius-lg);padding:40px 44px;
  background:linear-gradient(120deg,#102A43 0%,#17405F 55%,#1F6FB2 100%);
  color:#fff;display:flex;flex-wrap:wrap;align-items:center;gap:24px;justify-content:space-between;
  box-shadow:var(--shadow-md);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.35;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15.5px;margin-top:10px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-primary{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--radius-sm);border:1px solid transparent;
  background:var(--accent);color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 8px 18px rgba(255,122,89,.28);transition:all .2s ease;
}
.btn-primary:hover{background:#F2653F;color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(255,122,89,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:var(--radius-sm);
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);
  font-size:15px;font-weight:600;transition:all .2s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:76px;background:#102A43;color:#C9D8E6;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-logo{width:44px;height:44px;font-size:21px;background:linear-gradient(140deg,#2E86CE 0%,#1F6FB2 100%);box-shadow:none;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#8FA9C0;}
.footer-col p{font-size:14.5px;color:#9FB6CA;line-height:1.8;}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:#A9BFD2;}
.footer-col ul a i{font-size:11px;color:var(--accent);}
.footer-col ul a:hover{color:var(--accent);}
.footer-dl{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:var(--radius-sm);
  background:var(--accent);color:#fff;font-weight:700;font-size:14.5px;
  box-shadow:0 10px 22px rgba(255,122,89,.24);
}
.footer-dl:hover{background:#F2653F;color:#fff;transform:translateY(-2px);}
.footer-note{margin-top:14px;font-size:13px;color:#7E97AE;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:#8FA9C0;
}
.to-top{display:inline-flex;align-items:center;gap:7px;color:#C9D8E6;font-size:13.5px;}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:26px;}
  .nav-pill{padding:9px 12px;font-size:14px;}
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
}
@media (max-width:991.98px){
  .nav-list,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .article-grid{grid-template-columns:1fr;}
  .side-stack{position:static;}
  .article-hero{padding:32px 28px;}
  .panel-pad{padding:26px 24px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-band{padding:32px 28px;}
  .section{padding:48px 0 0;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .article-content{font-size:16.5px;line-height:1.85;}
  .brand-sub{display:none;}
  .nav-shell{padding:10px 12px;min-height:68px;border-radius:20px;}
  .card-grid{grid-template-columns:1fr;}
  .hero-meta{gap:14px;font-size:13.5px;}
  .cover-caption{font-size:12.5px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{flex:1 1 auto;justify-content:center;}
}
@media (max-width:575.98px){
  .site-container{padding:0 16px;}
  .article-hero{padding:26px 20px;border-radius:20px;}
  .panel-pad{padding:22px 18px;}
  .side-card{padding:20px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .article-content h2{font-size:22px;}
  .article-content h3{font-size:18.5px;}
  .tag-row{gap:8px;}
  .btn-primary,.btn-ghost{width:100%;justify-content:center;}
}

/* roulang page: category2 */
:root{
  --brand:#1F6FB2;
  --brand-dark:#155A93;
  --brand-soft:#EAF3FB;
  --coral:#FF7A59;
  --coral-dark:#E9623F;
  --teal:#2BB3A3;
  --bg:#F4F8FC;
  --surface:#FFFFFF;
  --ink:#102A43;
  --muted:#5A7085;
  --weak:#829AB1;
  --line:#DDE8F2;
  --divider:#EAF2F8;
  --shadow:0 8px 24px rgba(16,42,67,.08);
  --shadow-lg:0 16px 36px rgba(16,42,67,.12);
  --shadow-btn:0 8px 18px rgba(31,111,178,.22);
  --radius:16px;
  --radius-lg:24px;
  --radius-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,box-shadow .2s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0}
h1{font-size:clamp(32px,5vw,52px);line-height:1.18}
h2{font-size:clamp(26px,3.5vw,38px);line-height:1.25}
h3{font-size:clamp(19px,2.2vw,24px);line-height:1.35;font-weight:600}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(31,111,178,.28);outline-offset:2px;border-radius:8px}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px}
@media (min-width:1400px){.site-container{max-width:1320px}}
.section{padding:86px 0}
.section-sm{padding:64px 0}
@media (max-width:991px){.section{padding:64px 0}.section-sm{padding:52px 0}}
@media (max-width:575px){.section{padding:50px 0}.section-sm{padding:44px 0}}

/* ---------- 导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:1035;
  padding:14px 0;
  background:linear-gradient(180deg,rgba(244,248,252,.96) 62%,rgba(244,248,252,.7));
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.nav-shell{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
  padding:10px 16px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-logo{
  width:44px;height:44px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:linear-gradient(135deg,var(--brand),#3E8FD0);
  color:#fff;font-size:22px;
  box-shadow:0 6px 16px rgba(31,111,178,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:17px;font-weight:700;color:var(--ink)}
.brand-sub{font-size:11.5px;color:var(--weak);letter-spacing:.02em}
.nav-list{display:flex;align-items:center;gap:8px;margin:0 auto 0 8px;padding:0;list-style:none}
.nav-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 14px;border-radius:12px;
  font-size:14.5px;font-weight:500;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
}
.nav-pill i{font-size:15px;color:var(--weak);transition:color .2s ease}
.nav-pill:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:#CFE4F5}
.nav-pill:hover i{color:var(--brand)}
.nav-pill.active{background:var(--brand-soft);color:var(--brand-dark);border-color:#CFE4F5;font-weight:600}
.nav-pill.active i{color:var(--brand)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:12px;
  background:var(--coral);color:#fff;font-weight:600;font-size:14.5px;
  box-shadow:0 8px 18px rgba(255,122,89,.28);
  flex:0 0 auto;
}
.nav-cta:hover{background:var(--coral-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 22px rgba(255,122,89,.34)}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--brand);
  font-size:22px;align-items:center;justify-content:center;cursor:pointer;
  margin-left:auto;flex:0 0 auto;
}
.nav-toggle:hover{background:var(--brand-soft)}
@media (max-width:1199px){
  .nav-list{gap:4px}
  .nav-pill{padding:9px 10px;font-size:13.5px}
}
@media (max-width:991px){
  .nav-list,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
}
.nav-drawer{width:340px;max-width:88vw;border:0}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--divider);padding:20px 22px}
.nav-drawer .offcanvas-body{padding:20px 22px 28px}
.drawer-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.drawer-item{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;border-radius:14px;
  background:#fff;border:1px solid var(--line);
  color:var(--ink);font-weight:500;min-height:52px;
}
.drawer-item i{font-size:18px;color:var(--brand)}
.drawer-item:hover{border-color:#CFE4F5;background:var(--brand-soft);color:var(--brand-dark)}
.drawer-item.active{background:var(--brand-soft);border-color:#CFE4F5;color:var(--brand-dark);font-weight:600}

/* ---------- 通用按钮 ---------- */
.btn-main,.btn-ghost,.btn-coral{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:var(--radius-sm);
  font-size:15.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .22s ease;min-height:48px;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:var(--shadow-btn)}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(21,90,147,.3)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#BFD9EF}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px)}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(255,122,89,.28)}
.btn-coral:hover{background:var(--coral-dark);color:#fff;transform:translateY(-2px)}
.btn-light-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.45)}
.btn-light-ghost:hover{background:#fff;color:var(--brand-dark);border-color:#fff;transform:translateY(-2px)}
.btn-main.is-disabled,.btn-ghost.is-disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用组件 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-coral{background:#FFF0EB;color:var(--coral-dark)}
.badge-teal{background:#E6F7F5;color:#1B8C80}
.badge-light{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.35)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{color:var(--muted);font-size:16.5px;margin-top:14px;margin-bottom:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  letter-spacing:.08em;margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--coral)}
.card-base{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.hover-lift:hover{transform:translateY(-2px);border-color:rgba(31,111,178,.32);box-shadow:var(--shadow-lg)}
.divider{height:1px;background:var(--divider);border:0;margin:0}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:66px 52px;
  color:#fff;
  background:linear-gradient(112deg,rgba(13,36,58,.9) 0%,rgba(21,90,147,.74) 58%,rgba(31,111,178,.6) 100%),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  box-shadow:var(--shadow-lg);
}
.page-hero::after{
  content:"";position:absolute;inset:auto -60px -120px auto;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.32),transparent 68%);
}
.page-hero .hero-inner{position:relative;z-index:2}
.page-hero h1{color:#fff;max-width:20em}
.page-hero .hero-lead{color:rgba(255,255,255,.88);font-size:17.5px;line-height:1.85;max-width:44em;margin-top:18px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-figure{margin-top:6px}
.hero-shot{
  border:5px solid rgba(255,255,255,.16);border-radius:18px;overflow:hidden;box-shadow:0 20px 44px rgba(4,20,35,.35);
}
.hero-shot img{width:100%;height:230px;object-fit:cover;border-radius:12px}
.hero-float{
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.96);border-radius:14px;padding:12px 14px;
  box-shadow:0 14px 30px rgba(4,20,35,.28);color:var(--ink);
}
.hero-float i{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:var(--brand-soft);color:var(--brand);font-size:16px}
.hero-float strong{display:block;font-size:14px}
.hero-float span{font-size:12px;color:var(--weak)}
@media (max-width:991px){
  .page-hero{padding:48px 32px}
}
@media (max-width:575px){
  .page-hero{padding:38px 22px;border-radius:18px}
  .hero-actions .btn-main,.hero-actions .btn-light-ghost{width:100%}
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--brand),rgba(31,111,178,.15))}
.tl-item{position:relative;margin-bottom:22px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;left:-34px;top:22px;width:24px;height:24px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;color:var(--brand);
}
.tl-item.is-active .tl-dot{background:var(--coral);border-color:var(--coral);color:#fff}
.tl-card{padding:24px 26px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(31,111,178,.3)}
.tl-card h3{margin-bottom:8px}
.tl-card p{color:var(--muted);font-size:15.5px;margin-bottom:12px}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px}
.tl-tags span{font-size:12.5px;padding:5px 12px;border-radius:999px;background:var(--bg);border:1px solid var(--line);color:var(--muted)}

/* ---------- 功能模块卡片 ---------- */
.feature-card{padding:26px;height:100%;display:flex;flex-direction:column}
.feature-thumb{height:168px;overflow:hidden;border-radius:14px;margin-bottom:20px}
.feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.feature-card:hover .feature-thumb img{transform:scale(1.04)}
.feature-icon{
  width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:21px;margin-bottom:14px;
}
.feature-card h3{font-size:20px;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:15.5px;margin-bottom:16px}
.feature-list{margin-top:auto;display:flex;flex-direction:column;gap:8px}
.feature-list li{display:flex;gap:9px;font-size:14.5px;color:var(--muted)}
.feature-list li i{color:var(--teal);font-size:15px;margin-top:4px}

/* ---------- 侧栏 ---------- */
.side-stack{position:sticky;top:110px;display:flex;flex-direction:column;gap:20px}
.side-card{padding:24px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.side-card h3{font-size:18px;margin-bottom:14px}
.side-card p{font-size:14.5px;color:var(--muted)}
.side-dl{
  border-radius:var(--radius);
  background:linear-gradient(150deg,#1F6FB2,#155A93);
  color:#fff;padding:26px 24px;box-shadow:0 16px 32px rgba(21,90,147,.26);
}
.side-dl h3{color:#fff;font-size:19px;margin-bottom:10px}
.side-dl p{color:rgba(255,255,255,.85);font-size:14.5px}
.side-dl .btn-coral{width:100%;margin-top:6px}
.side-links{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border-radius:12px;background:var(--bg);border:1px solid var(--line);
  color:var(--ink);font-size:14.5px;font-weight:500;
}
.side-links a:hover{background:var(--brand-soft);border-color:#CFE4F5;color:var(--brand-dark)}
.side-links a i{color:var(--brand)}
.spec-list{display:flex;flex-direction:column;gap:12px}
.spec-list li{display:flex;justify-content:space-between;gap:12px;font-size:14.5px;padding-bottom:12px;border-bottom:1px dashed var(--divider)}
.spec-list li:last-child{border-bottom:0;padding-bottom:0}
.spec-list span:first-child{color:var(--weak)}
.spec-list span:last-child{color:var(--ink);font-weight:600;text-align:right}

/* ---------- 截图 ---------- */
.shot-rail{display:flex;gap:20px;overflow-x:auto;padding:6px 4px 18px;scroll-snap-type:x mandatory}
.shot-rail::-webkit-scrollbar{height:8px}
.shot-rail::-webkit-scrollbar-thumb{background:#CBDDEB;border-radius:99px}
.shot-card{flex:0 0 320px;scroll-snap-align:start;overflow:hidden;border-radius:var(--radius);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.shot-card img{width:100%;height:186px;object-fit:cover;border-radius:0}
.shot-body{padding:18px 20px}
.shot-body h3{font-size:17px;margin-bottom:6px}
.shot-body p{font-size:14px;color:var(--muted);margin:0}
@media (max-width:575px){.shot-card{flex:0 0 82%}}

/* ---------- 评价 ---------- */
.review-carousel{position:relative;padding:0 8px}
.review-card{padding:26px;height:100%;border-radius:var(--radius);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:16px;
}
.review-name{font-weight:600;font-size:15px}
.review-time{font-size:12.5px;color:var(--weak)}
.stars{color:var(--coral);font-size:14px;letter-spacing:2px;margin-bottom:10px}
.review-card p{font-size:15px;color:var(--muted);margin:0}
.review-carousel .carousel-indicators{position:static;margin:28px 0 0;display:flex;justify-content:center;gap:8px}
.review-carousel .carousel-indicators [data-bs-target]{
  width:26px;height:5px;border-radius:99px;background:#C6DAEA;border:0;opacity:1;margin:0;transition:all .25s ease;
}
.review-carousel .carousel-indicators .active{background:var(--coral);width:40px}
.review-carousel .carousel-control-prev,.review-carousel .carousel-control-next{
  width:46px;height:46px;top:42%;border-radius:50%;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);opacity:1;display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.review-carousel .carousel-control-prev{left:-10px}
.review-carousel .carousel-control-next{right:-10px}
.review-carousel .carousel-control-prev:hover,.review-carousel .carousel-control-next:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.review-carousel .carousel-control-prev i,.review-carousel .carousel-control-next i{font-size:19px}
@media (max-width:991px){
  .review-carousel .carousel-control-prev,.review-carousel .carousel-control-next{display:none}
}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{background:transparent;border:0;margin-bottom:14px}
.faq-acc .accordion-button{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:14px !important;box-shadow:var(--shadow);
  font-size:17px;font-weight:600;color:var(--ink);padding:18px 22px;
}
.faq-acc .accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand-dark);border-left-color:var(--coral);box-shadow:var(--shadow-lg)}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(31,111,178,.2);z-index:3}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;font-size:19px;font-weight:700;line-height:1;
  width:32px;height:32px;border-radius:50%;background-color:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;margin-left:auto;
  transition:transform .3s ease,background-color .3s ease,color .3s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";background-color:var(--brand);color:#fff;transform:rotate(180deg)}
.faq-acc .accordion-body{padding:18px 24px 22px 26px;font-size:15.5px;color:var(--muted);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:var(--radius-lg);padding:56px 48px;color:#fff;
  background:linear-gradient(120deg,rgba(13,36,58,.92),rgba(31,111,178,.82)),
             url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  box-shadow:var(--shadow-lg);
}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.86);font-size:16.5px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
@media (max-width:767px){.cta-band{padding:40px 24px}.cta-actions .btn-coral,.cta-actions .btn-light-ghost{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:#102A43;color:rgba(255,255,255,.78);padding:66px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-col p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.68)}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.72);font-size:14.5px}
.footer-col ul a i{font-size:11px;color:rgba(255,255,255,.4)}
.footer-col ul a:hover{color:var(--coral)}
.footer-col ul a:hover i{color:var(--coral)}
.footer-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-dl{
  display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:12px;
  background:var(--coral);color:#fff;font-weight:600;font-size:14.5px;
}
.footer-dl:hover{background:var(--coral-dark);color:#fff;transform:translateY(-2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.56);
}
.to-top{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.7);font-size:13.5px}
.to-top:hover{color:var(--coral)}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:52px;margin-top:64px}
}
.mobile-dl-bar{display:none}
@media (max-width:575px){
  .mobile-dl-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);border-top:1px solid var(--line);gap:10px;
    box-shadow:0 -8px 22px rgba(16,42,67,.1);
  }
  .mobile-dl-bar .btn-coral{flex:1}
  body{padding-bottom:74px}
}

/* roulang page: category3 */
:root{
  --brand:#1F6FB2;
  --brand-dark:#155A93;
  --brand-soft:#EAF3FB;
  --coral:#FF7A59;
  --coral-dark:#F2603C;
  --teal:#2BB3A3;
  --teal-soft:#E6F6F4;
  --bg:#F4F8FC;
  --card:#FFFFFF;
  --ink:#102A43;
  --muted:#5A7085;
  --weak:#829AB1;
  --line:#DDE8F2;
  --divider:#EAF2F8;
  --shadow-sm:0 4px 14px rgba(16,42,67,.06);
  --shadow:0 8px 24px rgba(16,42,67,.08);
  --shadow-lg:0 16px 36px rgba(16,42,67,.12);
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --max:1240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--ink)}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
:focus-visible{outline:3px solid rgba(31,111,178,.28);outline-offset:2px;border-radius:8px}
section[id],div[id]{scroll-margin-top:100px}

.site-container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}

/* ---------- header / nav ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:1040;
  padding:14px 0;
  background:rgba(244,248,252,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(221,232,242,.7);
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-logo{
  width:44px;height:44px;flex:0 0 44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:13px;
  background:linear-gradient(140deg,var(--brand) 0%,#2E86CE 100%);
  color:#fff;font-size:22px;
  box-shadow:0 8px 18px rgba(31,111,178,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.2px}
.brand-sub{font-size:12px;color:var(--weak);letter-spacing:.3px}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 15px;
  font-size:15px;font-weight:600;color:var(--muted);
  border:1px solid transparent;
  border-radius:12px;
  min-height:44px;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.nav-pill i{font-size:16px;color:var(--brand)}
.nav-pill:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.nav-pill.active{
  background:var(--brand-soft);
  color:var(--brand-dark);
  border-color:rgba(31,111,178,.22);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;
  min-height:44px;
  background:var(--coral);
  color:#fff;font-size:15px;font-weight:700;
  border-radius:var(--r-btn);
  box-shadow:0 10px 20px rgba(255,122,89,.28);
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--coral-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(255,122,89,.34)}
.nav-cta:active{transform:translateY(0)}
.nav-toggle{
  display:none;
  width:46px;height:46px;
  align-items:center;justify-content:center;
  background:var(--brand-soft);
  border:1px solid rgba(31,111,178,.2);
  border-radius:12px;
  color:var(--brand-dark);font-size:22px;
}
.nav-toggle:hover{background:#DCEAF7}

/* mobile offcanvas */
.mobile-nav{max-width:86vw;border-left:1px solid var(--line)}
.mobile-nav .offcanvas-header{padding:18px 20px;border-bottom:1px solid var(--divider)}
.mobile-nav .offcanvas-body{padding:18px 20px 26px}
.mobile-brand{display:flex;align-items:center;gap:10px}
.mnav-list{display:grid;gap:10px;margin-bottom:18px}
.mnav-list a{
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;
  min-height:48px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  color:var(--ink);
  font-size:16px;font-weight:600;
  box-shadow:var(--shadow-sm);
}
.mnav-list a i{color:var(--brand);font-size:18px}
.mnav-list a.active{background:var(--brand-soft);color:var(--brand-dark);border-color:rgba(31,111,178,.26)}
.mnav-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:14px 18px;min-height:48px;
  background:var(--coral);color:#fff;font-weight:700;border-radius:var(--r-btn);
}
.mnav-cta:hover{background:var(--coral-dark);color:#fff}

/* ---------- generic ---------- */
.section{padding:78px 0}
.section-alt{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider)}
.section-head{max-width:820px;margin-bottom:38px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  margin-bottom:16px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:13px;font-weight:700;letter-spacing:.4px;
  border-radius:var(--r-pill);
}
.eyebrow i{font-size:14px}
.section-head h2{font-size:clamp(26px,3.5vw,38px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px;line-height:1.85;margin:0}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  font-size:13px;font-weight:600;
  border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);
  border:1px solid rgba(31,111,178,.16);
}
.chip-coral{background:#FFF0EB;color:#C7431F;border-color:rgba(255,122,89,.28)}
.chip-teal{background:var(--teal-soft);color:#17756A;border-color:rgba(43,179,163,.26)}
.chip-line{background:#fff;color:var(--muted);border-color:var(--line)}

.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 24px;
  min-height:48px;
  font-size:16px;font-weight:700;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(31,111,178,.22)}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(21,90,147,.28)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(31,111,178,.35)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-line{background:#fff;color:var(--muted);border-color:var(--line)}
.btn-line:hover{border-color:rgba(31,111,178,.3);color:var(--brand-dark);background:#fff}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(255,122,89,.26)}
.btn-coral:hover{background:var(--coral-dark);color:#fff;transform:translateY(-2px)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 74px;
  background:linear-gradient(180deg,#F4F8FC 0%,#FFFFFF 100%);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.2;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(255,255,255,.96) 0%,rgba(244,248,252,.9) 52%,rgba(244,248,252,.62) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:880px}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--weak);margin-bottom:20px}
.crumb a{color:var(--muted);font-weight:600}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:12px}
.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.2;
  margin-bottom:20px;
}
.page-hero h1 .hl{color:var(--brand)}
.hero-lead{
  font-size:17.5px;
  line-height:1.9;
  color:var(--muted);
  max-width:760px;
  margin-bottom:24px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- matrix ---------- */
.matrix-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.matrix-scroll{overflow-x:auto}
table.matrix{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:15.5px;
}
table.matrix thead th{
  background:#F7FBFE;
  color:var(--brand-dark);
  font-size:14px;
  font-weight:700;
  letter-spacing:.3px;
  text-align:left;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.matrix tbody td{
  padding:20px 22px;
  border-bottom:1px solid var(--divider);
  color:var(--muted);
  vertical-align:middle;
}
table.matrix tbody tr:last-child td{border-bottom:none}
table.matrix tbody tr:hover{background:#FBFDFF}
table.matrix .v-name{font-weight:700;color:var(--ink);font-size:16px;display:block;margin-bottom:4px}
table.matrix .v-tag{font-size:12.5px;color:var(--weak)}
.matrix-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 22px;
  background:#F7FBFE;
  border-top:1px solid var(--line);
  font-size:14px;color:var(--muted);
}
.note-bar{
  display:flex;align-items:flex-start;gap:12px;
  margin-top:22px;
  padding:18px 22px;
  background:var(--brand-soft);
  border:1px solid rgba(31,111,178,.16);
  border-radius:14px;
  font-size:15px;
  color:var(--brand-dark);
}
.note-bar i{font-size:19px;margin-top:2px}

/* ---------- spec ---------- */
.spec-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:36px;align-items:start}
.spec-aside{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.spec-aside img{width:100%;aspect-ratio:4/3;object-fit:cover}
.spec-aside-body{padding:24px}
.spec-aside-body h3{font-size:20px;margin-bottom:12px}
.spec-aside-body p{font-size:15px;color:var(--muted);line-height:1.8}
.spec-aside-list{margin-top:16px;display:grid;gap:10px}
.spec-aside-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--muted)}
.spec-aside-list i{color:var(--teal);font-size:16px;margin-top:3px}
.spec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.spec-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(31,111,178,.3)}
.spec-icon{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  font-size:20px;margin-bottom:14px;
}
.spec-card h3{font-size:17px;margin-bottom:8px}
.spec-value{font-size:15px;font-weight:700;color:var(--brand-dark);margin-bottom:8px}
.spec-card p{font-size:14.5px;color:var(--muted);line-height:1.75;margin-bottom:12px}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.check-card{
  display:flex;gap:16px;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease;
}
.check-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.check-num{
  flex:0 0 40px;width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--brand) 0%,#2E86CE 100%);
  color:#fff;font-size:15px;font-weight:700;
}
.check-card h3{font-size:17px;margin-bottom:8px}
.check-card p{font-size:14.8px;color:var(--muted);line-height:1.78;margin:0}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.review-card{
  display:flex;flex-direction:column;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(31,111,178,.24)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;flex:0 0 44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:16px;font-weight:700;
}
.review-name{font-size:15px;font-weight:700;color:var(--ink);line-height:1.35}
.review-role{font-size:13px;color:var(--weak)}
.stars{display:flex;gap:3px;color:var(--coral);font-size:14px;margin-bottom:12px}
.review-text{font-size:15px;color:var(--muted);line-height:1.8;flex:1}
.review-time{margin-top:14px;font-size:13px;color:var(--weak)}

/* ---------- faq ---------- */
.faq-acc{max-width:920px}
.faq-acc .accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{
  position:relative;
  width:100%;
  padding:20px 70px 20px 24px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  background:#fff;
  box-shadow:none;
  border-left:4px solid transparent;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease;
}
.faq-acc .accordion-button:not(.collapsed){
  background:var(--brand-soft);
  color:var(--brand-dark);
  border-left-color:var(--brand);
}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none}
.faq-acc .accordion-button:focus-visible{outline:3px solid rgba(31,111,178,.28);outline-offset:-3px}
.faq-acc .accordion-button::after{
  content:"";
  background-image:none !important;
  background-color:var(--brand-soft);
  width:28px;height:28px;
  border-radius:9px;
  position:absolute;
  right:22px;top:50%;
  margin:0;
  transform:translateY(-50%);
  transition:background-color .22s ease;
}
.faq-acc .accordion-button::before{
  content:"";
  position:absolute;
  right:31px;top:50%;
  width:10px;height:10px;
  transform:translateY(-50%);
  background:
    linear-gradient(var(--brand),var(--brand)) center/10px 2px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/2px 10px no-repeat;
  transition:background .22s ease,transform .25s ease;
  z-index:2;
}
.faq-acc .accordion-button:not(.collapsed)::before{
  background:linear-gradient(var(--brand-dark),var(--brand-dark)) center/10px 2px no-repeat;
  transform:translateY(-50%) rotate(180deg);
}
.faq-acc .accordion-body{
  padding:4px 26px 24px 28px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
  border-left:4px solid rgba(31,111,178,.3);
}

/* ---------- cta ---------- */
.cta-section{padding:0 0 88px}
.cta-panel{
  position:relative;
  overflow:hidden;
  padding:52px 46px;
  border-radius:24px;
  background:linear-gradient(120deg,#10456F 0%,#1F6FB2 58%,#2E86CE 100%);
  color:#fff;
  box-shadow:0 20px 44px rgba(16,42,67,.2);
}
.cta-panel::before{
  content:"";
  position:absolute;right:-80px;top:-80px;
  width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,89,.42) 0%,rgba(255,122,89,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:34px;align-items:center}
.cta-panel h2{color:#fff;font-size:clamp(25px,3vw,34px);margin-bottom:14px}
.cta-panel p{color:rgba(255,255,255,.86);font-size:16px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-panel .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.42)}
.cta-panel .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff}
.cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cta-badges span{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;
  font-size:13.5px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.26);
  color:#fff;
}
.cta-side{
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.26);
  border-radius:16px;
  padding:24px;
  backdrop-filter:blur(4px);
}
.cta-side h3{color:#fff;font-size:18px;margin-bottom:14px}
.cta-side ul{display:grid;gap:12px}
.cta-side li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.9);line-height:1.7}
.cta-side i{color:var(--coral);font-size:16px;margin-top:3px}

/* ---------- footer ---------- */
.site-footer{
  background:#102A43;
  color:rgba(255,255,255,.78);
  padding:64px 0 26px;
  font-size:15px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:34px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.55)}
.footer-col h4{font-size:16px;color:#fff;margin-bottom:18px}
.footer-col p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72)}
.footer-col ul{display:grid;gap:11px}
.footer-col ul a{
  display:inline-flex;align-items:center;gap:8px;
  color:rgba(255,255,255,.76);
  font-size:14.8px;
}
.footer-col ul a i{font-size:11px;color:rgba(255,255,255,.42)}
.footer-col ul a:hover{color:var(--coral)}
.footer-col ul a:hover i{color:var(--coral)}
.footer-note{font-size:13px;color:rgba(255,255,255,.52);margin-top:14px}
.footer-dl{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 20px;
  min-height:46px;
  background:var(--coral);
  color:#fff;font-weight:700;font-size:15px;
  border-radius:var(--r-btn);
  box-shadow:0 10px 20px rgba(255,122,89,.22);
}
.footer-dl:hover{background:var(--coral-dark);color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-top:24px;
  font-size:13.5px;
  color:rgba(255,255,255,.6);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.24);
  color:rgba(255,255,255,.82);
  font-size:13.5px;
}
.to-top:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .review-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .spec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-grid .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  .nav-list,.nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-shell{padding:10px 12px}
  .section{padding:62px 0}
  .spec-layout{grid-template-columns:1fr;gap:26px}
  .spec-aside{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:stretch}
  .spec-aside img{height:100%;aspect-ratio:auto}
  .cta-inner{grid-template-columns:1fr}
  .cta-panel{padding:42px 32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:52px 0}
  .section-head{margin-bottom:28px}
  .spec-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .spec-aside{grid-template-columns:1fr}
  .spec-aside img{aspect-ratio:16/9;height:auto}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .page-hero{padding:40px 0 56px}
}
@media (max-width:575px){
  .site-container{padding:0 16px}
  .brand-sub{display:none}
  .review-grid{grid-template-columns:1fr}
  .cta-panel{padding:32px 22px;border-radius:20px}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-grid .footer-col:last-child{grid-column:span 1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .matrix-foot{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}