/* roulang page: index */
:root{
  --c-primary:#241B36;
  --c-primary-deep:#1C1630;
  --c-primary-soft:#4A3A6E;
  --c-accent:#37E4C8;
  --c-hot:#FF7A45;
  --bg:#F7F5F1;
  --bg-alt:#EFEBE4;
  --bg-dark:#1C1630;
  --text:#1A1720;
  --text-sub:#5C5666;
  --text-weak:#8A8494;
  --text-inv:#F5F2EC;
  --line:#E3DED5;
  --line-dark:rgba(255,255,255,.10);
  --r-card:18px;
  --r-sm:12px;
  --r-img:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(26,23,32,.04), 0 12px 32px -16px rgba(36,27,54,.18);
  --sh-2:0 2px 4px rgba(26,23,32,.06), 0 24px 48px -20px rgba(36,27,54,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --ff:"HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:16px;
  font-family:var(--ff);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{margin:0;font-family:var(--ff);color:inherit;line-height:1.25;font-weight:750;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover,a:focus{color:var(--c-primary-soft);}
img{max-width:100%;display:block;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
::selection{background:rgba(55,228,200,.35);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1200px){.container{padding:0 32px;}}

.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--bg-dark);color:var(--text-inv);}
@media (max-width:991px){.section{padding:72px 0;}}
@media (max-width:575px){.section{padding:56px 0;}}

.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:750;
  line-height:1.2;
  letter-spacing:-.01em;
}
.section-head h2::after{
  content:"";
  display:block;
  width:64px;height:4px;
  margin-top:16px;
  border-radius:2px;
  background:var(--c-accent);
}
.section-head p{margin-top:18px;color:var(--text-sub);font-size:17px;}
.section-dark .section-head p{color:rgba(245,242,236,.72);}

.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-primary-soft);
  text-transform:uppercase;
  margin-bottom:14px;
  font-weight:650;
}
.section-dark .eyebrow{color:var(--c-accent);}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:16px;
  z-index:90;
  padding:0 16px;
}
.site-nav{
  width:min(1120px,92%);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:20px;
  padding:0 10px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(26,23,32,.08);
  box-shadow:0 8px 24px -12px rgba(36,27,54,.24);
  transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-nav.is-scrolled{
  height:56px;
  background:rgba(255,255,255,.95);
  box-shadow:0 10px 28px -14px rgba(36,27,54,.32);
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:12px;
  background:var(--c-primary);
  color:var(--c-accent);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  position:relative;
}
.logo-mark::after{
  content:"";
  position:absolute;
  right:-3px;bottom:-3px;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--c-accent);
  border:2px solid rgba(255,255,255,.9);
}
.logo-text{
  font-size:17px;
  font-weight:750;
  color:var(--c-primary);
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  color:var(--text-sub);
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:50%;bottom:4px;
  width:0;height:2px;
  border-radius:2px;
  background:var(--c-accent);
  transform:translateX(-50%);
  transition:width .22s var(--ease);
}
.nav-links a:hover{color:var(--c-primary);background:rgba(36,27,54,.05);}
.nav-links a:hover::after,
.nav-links a.is-active::after{width:22px;}
.nav-links a.is-active{color:var(--c-primary);}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:8px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid rgba(26,23,32,.12);
  background:rgba(255,255,255,.7);
  color:var(--c-primary);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:#fff;border-color:rgba(36,27,54,.24);}
.nav-toggle i{font-size:17px;}

.mobile-panel{
  display:none;
  position:fixed;
  inset:0;
  z-index:99;
  background:rgba(28,22,48,.97);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  padding:88px 28px 32px;
  flex-direction:column;
}
.mobile-panel.is-open{display:flex;}
.mobile-panel a.m-panel-link{
  display:flex;
  align-items:center;
  height:56px;
  font-size:18px;
  font-weight:650;
  color:var(--text-inv);
  border-bottom:1px solid var(--line-dark);
}
.mobile-panel a.m-panel-link:hover{color:var(--c-accent);}
.mobile-panel .m-panel-cta{margin-top:auto;padding-top:24px;}
.mobile-close{
  position:absolute;
  top:22px;right:24px;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line-dark);
  background:transparent;
  color:var(--text-inv);
  cursor:pointer;
}
.mobile-close i{font-size:18px;}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;
  overflow:hidden;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:650;
  letter-spacing:.01em;
  cursor:pointer;
  white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn::after{
  content:"";
  position:absolute;
  left:0;top:0;
  width:100%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);
  transform:translateX(-100%);
  transition:transform .55s var(--ease);
}
.btn:hover::after{transform:translateX(100%);}
.btn-primary{background:var(--c-primary);color:var(--text-inv);}
.btn-primary:hover{background:var(--c-primary-deep);color:var(--text-inv);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-accent{background:var(--c-accent);color:#1A1720;}
.btn-accent:hover{background:#2ccfb6;color:#1A1720;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary);color:var(--text-inv);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-wide{width:100%;}
.btn i{font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  background:rgba(36,27,54,.08);
  color:var(--c-primary);
  white-space:nowrap;
}
.badge-accent{background:rgba(55,228,200,.18);color:#12695c;}
.badge-hot{background:rgba(255,122,69,.16);color:#A63D18;}
.badge-dark{background:rgba(55,228,200,.14);color:var(--c-accent);}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  border:1px solid var(--line);
  color:var(--text-sub);
  background:#fff;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin-top:-80px;
  padding:168px 0 96px;
  background:var(--bg-dark);
  color:var(--text-inv);
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;
  background-position:center right;
  opacity:.5;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(28,22,48,.95) 0%,rgba(28,22,48,.80) 46%,rgba(28,22,48,.52) 100%);
}
.hero-inner{position:relative;z-index:2;}
.hero-copy{position:relative;}
.hero-watermark{
  position:absolute;
  top:-58px;left:-10px;
  font-size:clamp(96px,15vw,190px);
  font-weight:800;
  line-height:1;
  letter-spacing:-.04em;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(245,242,236,.06);
  pointer-events:none;
  user-select:none;
  z-index:0;
}
.hero-copy > *{position:relative;z-index:1;}
.hero h1{
  margin-top:20px;
  font-size:clamp(32px,5.2vw,56px);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
}
.hero h1 .line{display:block;}
.hero h1 .line-2{
  font-size:.62em;
  font-weight:650;
  color:rgba(245,242,236,.82);
  margin-top:12px;
}
.hero-sub{
  margin-top:22px;
  max-width:520px;
  font-size:17px;
  line-height:1.8;
  color:rgba(245,242,236,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero .btn-primary{background:var(--text-inv);color:var(--c-primary-deep);}
.hero .btn-primary:hover{background:var(--c-accent);color:#1A1720;}
.hero .btn-ghost{border-color:rgba(245,242,236,.45);color:var(--text-inv);}
.hero .btn-ghost:hover{background:var(--text-inv);color:var(--c-primary-deep);border-color:var(--text-inv);}
.trust-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:28px;
  font-size:13px;
  color:rgba(245,242,236,.62);
}
.trust-line span{display:inline-flex;align-items:center;gap:8px;}
.trust-line span + span::before{
  content:"";
  width:1px;height:12px;
  background:rgba(245,242,236,.28);
  margin-right:8px;
  display:inline-block;
}
.hero-visual{
  position:relative;
  aspect-ratio:16/10;
  border-radius:var(--r-img);
  border:1px solid var(--line-dark);
  overflow:hidden;
  background:#2A2140 url(/assets/images/backpic/back-2.png) center right/cover no-repeat;
}
.hero-visual img{
  position:absolute;
  right:0;bottom:0;
  width:78%;height:80%;
  object-fit:cover;
  border-radius:var(--r-img) 0 0 0;
  animation:heroFade .7s var(--ease) .18s both;
}
@keyframes heroFade{
  from{opacity:0;transform:scale(1.03);}
  to{opacity:1;transform:scale(1);}
}
.hero-title .line{
  opacity:0;
  transform:translateY(14px);
  animation:lineUp .55s var(--ease) forwards;
}
.hero-title .line-2{animation-delay:.14s;}
@keyframes lineUp{
  to{opacity:1;transform:translateY(0);}
}
@media (max-width:991px){
  .hero{padding:132px 0 76px;margin-top:-72px;}
  .hero-visual{margin-top:44px;aspect-ratio:4/3;background-position:center top;}
}
@media (max-width:575px){
  .hero{padding:120px 0 64px;}
  .hero h1{font-size:30px;}
  .hero-actions .btn{width:100%;}
}

/* ---------- 三步上手 ---------- */
.steps{position:relative;margin-top:8px;}
.step{
  position:relative;
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  gap:32px;
  padding-bottom:44px;
}
.step:last-child{padding-bottom:0;}
.step:not(:last-child)::before{
  content:"";
  position:absolute;
  left:44px;top:70px;bottom:6px;
  width:1px;
  background:var(--line);
}
.step-num{
  display:block;
  font-size:clamp(40px,4.4vw,62px);
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  color:transparent;
  -webkit-text-stroke:1.6px var(--c-accent);
}
.step-body{padding:6px 0 0;max-width:640px;}
.step-body h3{
  font-size:22px;
  font-weight:650;
  line-height:1.35;
}
.step-body p{
  margin:12px 0 16px;
  color:var(--text-sub);
  font-size:17px;
}
@media (max-width:575px){
  .step{grid-template-columns:58px minmax(0,1fr);gap:20px;}
  .step:not(:last-child)::before{left:26px;top:56px;}
  .step-num{font-size:38px;-webkit-text-stroke:1.2px var(--c-accent);}
  .step-body h3{font-size:19px;}
}

/* ---------- 案例证明 ---------- */
.case-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.case-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(55,228,200,.5);
}
.case-media{overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt);}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-body{padding:24px 26px 26px;}
.case-body h3{margin-top:14px;font-size:22px;font-weight:650;line-height:1.35;}
.case-body p{margin-top:12px;color:var(--text-sub);font-size:16px;}
.case-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.case-metrics li{font-size:13px;color:var(--text-weak);}
.case-metrics strong{
  display:block;
  font-size:20px;
  font-weight:750;
  color:var(--c-primary);
  letter-spacing:-.01em;
}
.case-stack{display:grid;grid-template-rows:1fr 1fr;gap:24px;height:100%;}
.case-small .case-media{aspect-ratio:4/3;}
.case-small .case-body{padding:20px 22px 22px;}
.case-small .case-body h3{margin-top:12px;font-size:18px;font-weight:650;}
.case-small .case-body p{margin-top:10px;font-size:15px;line-height:1.7;}
.case-small .case-metrics{margin-top:16px;padding-top:14px;gap:14px;}
.case-small .case-metrics strong{font-size:16px;}
@media (max-width:991px){
  .case-stack{grid-template-rows:none;grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .case-stack{grid-template-columns:1fr;}
  .case-stack{margin-top:24px;}
}

/* ---------- FAQ ---------- */
.faq-title-col{position:sticky;top:104px;align-self:flex-start;}
.faq-title-col h2{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:750;
  line-height:1.2;
}
.faq-title-col h2::after{
  content:"";
  display:block;
  width:64px;height:4px;
  margin-top:16px;
  border-radius:2px;
  background:var(--c-accent);
}
.faq-title-col p{margin-top:18px;color:var(--text-sub);font-size:16px;}
@media (max-width:991px){.faq-title-col{position:static;margin-bottom:28px;}}

.faq-accordion{margin:0;border-top:1px solid var(--line);}
.faq-accordion .accordion-item{border-bottom:1px solid var(--line);background:transparent;}
.faq-accordion .accordion-title{
  display:block;
  position:relative;
  padding:22px 52px 22px 0;
  border:0;
  background:transparent;
  font-size:17px;
  font-weight:650;
  color:var(--text);
  line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-accordion .accordion-title:hover{color:var(--c-primary);background:transparent;}
.faq-accordion .accordion-title::before{
  content:"";
  position:absolute;
  right:8px;top:50%;
  width:14px;height:14px;
  margin-top:-7px;
  background-image:linear-gradient(var(--c-primary),var(--c-primary)),linear-gradient(var(--c-primary),var(--c-primary));
  background-size:14px 1.5px,1.5px 14px;
  background-position:center;
  background-repeat:no-repeat;
  transform:none;
  transition:transform .24s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  transform:rotate(45deg);
}
.faq-accordion .accordion-content{
  padding:0 52px 24px 0;
  border:0;
  background:transparent;
  color:var(--text-sub);
  font-size:16px;
  line-height:1.8;
}

/* ---------- 最新信息 ---------- */
.latest-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.latest-head h2{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:750;
  line-height:1.2;
}
.latest-head h2::after{
  content:"";
  display:block;
  width:64px;height:4px;
  margin-top:16px;
  border-radius:2px;
  background:var(--c-accent);
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:650;
  color:var(--c-primary);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.link-more:hover{border-color:var(--c-accent);color:var(--c-primary-deep);}
.link-more i{font-size:12px;transition:transform .2s var(--ease);}
.link-more:hover i{transform:translateX(3px);}

.post-main{
  display:block;
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.post-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(55,228,200,.5);}
.post-main .post-media{overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt);}
.post-main .post-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.post-main:hover .post-media img{transform:scale(1.03);}
.post-main .post-body{padding:24px 26px 26px;}
.post-main h3{
  margin-top:14px;
  font-size:23px;
  font-weight:650;
  line-height:1.4;
  color:var(--c-primary);
}
.post-main:hover h3{text-decoration:underline;text-decoration-color:var(--c-accent);text-decoration-thickness:2px;text-underline-offset:3px;}
.post-main p{
  margin-top:12px;
  color:var(--text-sub);
  font-size:16px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-mini-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  grid-auto-rows:1fr;
  gap:20px;
  height:100%;
}
.post-mini{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.post-mini:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(55,228,200,.5);}
.post-mini h4{
  margin-top:12px;
  font-size:16px;
  font-weight:650;
  line-height:1.5;
  color:var(--c-primary);
}
.post-mini:hover h4{text-decoration:underline;text-decoration-color:var(--c-accent);text-decoration-thickness:2px;text-underline-offset:3px;}
.post-mini p{
  margin-top:8px;
  font-size:14px;
  line-height:1.7;
  color:var(--text-sub);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  font-size:13px;
  color:var(--text-weak);
}
.post-meta .badge{flex:0 0 auto;}
@media (max-width:991px){
  .post-mini-grid{margin-top:24px;}
}
@media (max-width:520px){
  .post-mini-grid{grid-template-columns:1fr;}
}

.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:56px 24px;
  text-align:center;
  color:var(--text-weak);
}
.empty-state i{
  font-size:26px;
  color:var(--c-primary-soft);
  display:block;
  margin-bottom:14px;
}
.empty-state p{margin-bottom:20px;font-size:16px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--bg-dark);
  color:var(--text-inv);
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-copy{max-width:620px;}
.cta-copy h2{
  font-size:clamp(24px,3vw,36px);
  font-weight:750;
  line-height:1.25;
}
.cta-copy p{
  margin-top:16px;
  color:rgba(245,242,236,.72);
  font-size:17px;
}
.cta-ghost-word{
  position:absolute;
  right:24px;
  top:50%;
  transform:translateY(-50%);
  font-size:clamp(90px,14vw,180px);
  font-weight:800;
  line-height:1;
  letter-spacing:-.04em;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(55,228,200,.16);
  pointer-events:none;
  user-select:none;
  z-index:1;
}
@media (max-width:767px){
  .cta-band{padding:64px 0;}
  .cta-actions .btn{width:100%;}
  .cta-ghost-word{font-size:88px;right:-10px;opacity:.6;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-dark);
  color:var(--text-inv);
  padding:72px 0 0;
}
.footer-grid{row-gap:36px;}
.footer-brand .logo-text{color:var(--text-inv);}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  line-height:1.8;
  color:rgba(245,242,236,.68);
  max-width:320px;
}
.footer-brand .footer-meta{
  margin-top:12px;
  font-size:13px;
  color:rgba(245,242,236,.5);
}
.footer-col h4{
  font-size:14px;
  font-weight:650;
  color:var(--text-inv);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:14px;
  color:rgba(245,242,236,.72);
  transition:color .2s var(--ease);
}
.footer-col ul li a:hover{color:var(--c-accent);}
.footer-col .plain{
  font-size:14px;
  color:rgba(245,242,236,.72);
  line-height:1.8;
}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid var(--line-dark);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:rgba(245,242,236,.5);
}
@media (max-width:767px){
  .site-footer{padding-top:56px;}
  .footer-bottom{margin-top:40px;}
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.reveal.in-view{opacity:1;transform:translateY(0);}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
  .hero .line{opacity:1;transform:none;}
  .hero-visual img{opacity:1;transform:none;}
}

/* ---------- 移动端导航 ---------- */
@media (max-width:768px){
  .nav-links{display:none;}
  .nav-right .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .site-nav{padding:0 8px 0 16px;justify-content:space-between;}
  .logo-text{font-size:16px;}
}

/* roulang page: article */
:root{
  --c-primary:#241B36;
  --c-primary-deep:#1C1630;
  --c-primary-soft:#4A3A6E;
  --c-accent:#37E4C8;
  --c-hot:#FF7A45;
  --bg:#F7F5F1;
  --bg-alt:#EFEBE4;
  --card:#FFFFFF;
  --text:#1A1720;
  --text-2:#5C5666;
  --text-weak:#8A8494;
  --invert:#F5F2EC;
  --line:#E3DED5;
  --line-invert:rgba(255,255,255,.10);
  --sh-1:0 1px 2px rgba(26,23,32,.04),0 12px 32px -16px rgba(36,27,54,.18);
  --sh-2:0 2px 4px rgba(26,23,32,.06),0 24px 48px -20px rgba(36,27,54,.28);
  --r-lg:18px;
  --r-md:12px;
  --r-img:16px;
  --r-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-primary-soft);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{font-family:var(--font-cn);color:var(--text);margin:0;letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.2em;padding-left:20px;}
li{margin-bottom:.4em;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1200px){.container{padding:0 32px;}}

/* ============ 悬浮胶囊导航 ============ */
.site-header{position:sticky;top:16px;z-index:80;padding:0 16px;}
.site-nav{
  width:100%;
  max-width:min(1120px,92%);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
  padding:0 12px 0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(26,23,32,.08);
  box-shadow:0 8px 24px -12px rgba(36,27,54,.24);
  transition:height .2s var(--ease),background .2s var(--ease);
}
.site-nav.is-scrolled{height:56px;background:rgba(255,255,255,.95);}
.logo{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;
  background:var(--c-primary);color:var(--c-accent);
  font-size:13px;font-weight:800;letter-spacing:.02em;
  text-transform:lowercase;
}
.logo-text{font-size:17px;font-weight:750;color:var(--text);letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  color:var(--text-2);
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-links a:hover{background:rgba(36,27,54,.06);color:var(--c-primary);}
.nav-links a.is-active{color:var(--c-primary);}
.nav-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--c-accent);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-pill);
  border:1px solid rgba(26,23,32,.10);background:rgba(255,255,255,.7);
  color:var(--c-primary);font-size:16px;line-height:1;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{background:var(--c-primary);color:var(--invert);}
.nav-mobile-cta{display:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:650;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;position:relative;overflow:hidden;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px;}
.btn-primary{background:var(--c-primary);color:var(--invert);}
.btn-primary:hover{background:var(--c-primary-deep);color:var(--invert);box-shadow:var(--sh-1);}
.btn-accent{background:var(--c-accent);color:#1A1720;}
.btn-accent:hover{background:#25cfb5;color:#1A1720;}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary);color:var(--invert);}
.btn::after{
  content:"";position:absolute;top:0;left:-40%;width:40%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
  transform:translateX(-120%);transition:transform .5s var(--ease);
}
.btn:hover::after{transform:translateX(360%);}
.btn:active{transform:translateY(1px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(36,27,54,.08);color:var(--c-primary);white-space:nowrap;
}
.badge-hot{background:rgba(255,122,69,.14);color:#B8461B;}
.badge-accent{background:rgba(55,228,200,.20);color:#12766A;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;font-size:13.5px;color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:rgba(55,228,200,.7);color:var(--c-primary);}

/* ============ 面包屑 ============ */
.crumb-bar{padding:34px 0 0;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-weak);list-style:none;margin:0;padding:0;
}
.breadcrumb li{margin:0;display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#C8C2B8;}
.breadcrumb a{color:var(--text-2);font-weight:600;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .current{color:var(--text-weak);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头 ============ */
.article-hero{padding:26px 0 8px;}
.article-head{max-width:860px;}
.article-head h1{
  font-size:clamp(30px,4.6vw,50px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.02em;
  margin:18px 0 20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--text-weak);
}
.article-meta .sep{width:1px;height:12px;background:var(--line);display:inline-block;}
.article-lead{
  margin-top:24px;padding:20px 22px;
  border-left:3px solid var(--c-accent);
  background:var(--bg-alt);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-size:16px;line-height:1.75;
}

/* ============ 正文布局 ============ */
.article-layout{padding:44px 0 20px;}
.article-inner{max-width:760px;margin:0 auto;}
.article-content{
  font-size:17px;
  line-height:1.85;
  color:#231F2E;
}
.article-content h2{
  position:relative;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:750;
  line-height:1.3;
  margin:48px 0 16px;
  padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.18em;width:3px;
  border-radius:2px;background:var(--c-accent);
}
.article-content h3{
  font-size:20px;font-weight:650;line-height:1.4;
  margin:32px 0 12px;
}
.article-content h4{font-size:17px;font-weight:650;margin:24px 0 10px;}
.article-content p{margin:0 0 1.2em;}
.article-content a{color:#185C52;border-bottom:1px solid rgba(55,228,200,.7);}
.article-content a:hover{color:var(--c-primary);}
.article-content ul,.article-content ol{padding-left:20px;margin:0 0 1.2em;}
.article-content li::marker{color:#17A392;font-weight:700;}
.article-content blockquote{
  margin:28px 0;padding:20px 22px;
  background:#F2EFE8;border-left:3px solid var(--c-primary-soft);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content table{
  width:100%;display:block;overflow-x:auto;
  border-collapse:collapse;margin:24px 0;font-size:15px;
}
.article-content th,.article-content td{
  border:1px solid var(--line);padding:12px 14px;text-align:left;
}
.article-content th{background:var(--bg-alt);font-weight:650;}
.article-content img{border-radius:var(--r-img);margin:24px 0 8px;}
.article-content hr{border:0;border-top:1px solid var(--line);margin:40px 0;}
.article-content code{
  background:var(--bg-alt);border-radius:6px;padding:2px 6px;font-size:.92em;
}

/* ============ 侧边目录 ============ */
.toc-wrap{display:none;}
.toc{
  position:sticky;top:104px;
  padding:22px 22px 18px;
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:#fff;box-shadow:var(--sh-1);
}
.toc h4{font-size:13px;font-weight:650;color:var(--text-weak);letter-spacing:.06em;margin-bottom:14px;}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc;}
.toc li{margin:0 0 4px;}
.toc a{
  display:block;padding:7px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);line-height:1.5;
  border-left:2px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{background:var(--bg-alt);color:var(--c-primary);}
.toc a.is-current{color:var(--c-primary);border-left-color:var(--c-accent);background:rgba(55,228,200,.10);}
@media (min-width:992px){
  .toc-wrap{display:block;}
}

/* ============ 空态 ============ */
.article-empty{
  text-align:center;
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  padding:56px 24px;
  background:rgba(255,255,255,.6);
}
.article-empty i{font-size:28px;color:var(--text-weak);}
.article-empty p{margin:16px 0 22px;color:var(--text-2);font-size:16px;}

/* ============ 文末模块 ============ */
.article-foot{padding:16px 0 0;margin-top:40px;border-top:1px solid var(--line);}
.article-foot h4{font-size:14px;color:var(--text-weak);font-weight:650;margin-bottom:14px;}
.foot-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}

.related{padding:64px 0 8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{
  font-size:clamp(24px,2.8vw,34px);font-weight:750;line-height:1.2;position:relative;padding-bottom:14px;
}
.section-head h2::after{
  content:"";position:absolute;left:0;bottom:0;width:60px;height:4px;border-radius:2px;background:var(--c-accent);
}
.section-head .more{font-size:14.5px;font-weight:650;color:var(--c-primary);white-space:nowrap;}
.section-head .more:hover{text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px;text-decoration-thickness:2px;}

.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(55,228,200,.45);}
.card-media{overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:19px;font-weight:650;line-height:1.4;}
.card-body h3 a{color:var(--text);}
.card-body h3 a:hover{
  color:var(--c-primary);
  text-decoration:underline;text-decoration-color:var(--c-accent);
  text-decoration-thickness:2px;text-underline-offset:3px;
}
.card-body p{font-size:15px;color:var(--text-2);line-height:1.7;margin:0;}
.card-foot{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-weak);}

/* ============ CTA 条 ============ */
.cta-band{
  margin-top:72px;
  background:var(--c-primary-deep);
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-40px;bottom:-40px;width:320px;height:320px;
  border:1px solid rgba(55,228,200,.16);border-radius:50%;
}
.cta-band .cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:32px;position:relative;}
.cta-band h2{color:var(--invert);font-size:clamp(22px,2.6vw,32px);font-weight:750;line-height:1.25;}
.cta-band p{color:rgba(245,242,236,.72);font-size:15.5px;margin-top:12px;max-width:520px;}
.cta-band .cta-action{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-deep);
  color:rgba(245,242,236,.72);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{gap:0;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand .logo-text{color:var(--invert);}
.footer-brand p{font-size:14px;line-height:1.75;color:rgba(245,242,236,.72);max-width:320px;}
.footer-meta{color:rgba(245,242,236,.52)!important;font-size:13px!important;margin-top:10px;}
.footer-col h4{color:var(--invert);font-size:14px;font-weight:650;margin-bottom:16px;}
.footer-col ul{list-style:none;margin:0 0 24px;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(245,242,236,.72);font-size:14px;}
.footer-col a:hover{color:var(--c-accent);}
.footer-col .plain{font-size:14px;line-height:1.85;color:rgba(245,242,236,.66);margin:0;}
.footer-bottom{
  margin-top:40px;
  border-top:1px solid var(--line-invert);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:rgba(245,242,236,.56);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.in-view{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (min-width:576px) and (max-width:991px){
  .article-head h1{font-size:38px;}
}
@media (max-width:991px){
  .site-nav{max-width:100%;}
  .footer-brand p{max-width:none;}
  .footer-col{margin-top:32px;}
  .cta-band .cta-action{margin-left:0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .site-header{top:10px;padding:0 12px;}
  .site-nav{
    height:58px;
    padding:0 10px 0 14px;
    gap:10px;
    max-width:100%;
    flex-wrap:wrap;
  }
  .site-nav.is-scrolled{height:54px;}
  .nav-links{
    display:none;
    order:3;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:8px 0 16px;
    border-top:1px solid var(--line);
  }
  .nav-links a{font-size:18px;padding:0 14px;line-height:56px;border-radius:14px;}
  .nav-links a.is-active::after{left:14px;right:auto;width:28px;bottom:10px;}
  .site-nav.nav-open .nav-links{display:flex;}
  .nav-mobile-cta{display:flex!important;justify-content:center;margin-top:12px;}
  .nav-right .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .article-head h1{font-size:28px;line-height:1.2;}
  .article-layout{padding:32px 0 12px;}
  .article-content{font-size:16px;}
  .article-content h2{margin-top:38px;}
  .crumb-bar{padding-top:26px;}
  .breadcrumb .current{white-space:normal;max-width:220px;}
  .related{padding:48px 0 0;}
  .cta-band{padding:56px 0;margin-top:56px;}
  .cta-band .cta-action .btn{width:100%;}
  .footer-col{margin-top:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:519px){
  .container{padding:0 18px;}
  .article-head h1{font-size:26px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .card-body{padding:20px;}
  .foot-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --c-primary:#241B36;
  --c-primary-deep:#1C1630;
  --c-primary-soft:#4A3A6E;
  --c-accent:#37E4C8;
  --c-hot:#FF7A45;
  --bg:#F7F5F1;
  --bg-alt:#EFEBE4;
  --bg-dark:#1C1630;
  --surface:#FFFFFF;
  --text:#1A1720;
  --text-sub:#5C5666;
  --text-weak:#8A8494;
  --text-inv:#F5F2EC;
  --line:#E3DED5;
  --line-dark:rgba(255,255,255,.10);
  --r-card:18px;
  --r-sm:12px;
  --r-img:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(26,23,32,.04),0 12px 32px -16px rgba(36,27,54,.18);
  --sh-2:0 2px 4px rgba(26,23,32,.06),0 24px 48px -20px rgba(36,27,54,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --cont:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color 200ms var(--ease),border-color 200ms var(--ease)}
a:hover{color:var(--c-primary-soft)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;font-family:inherit;color:var(--text);line-height:1.2}
h1{font-weight:800;letter-spacing:-.02em}
h2{font-weight:750}
h3{font-weight:650;line-height:1.35}
p{margin:0 0 1.2em}
ul,ol{margin:0;padding:0}
li{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font-family:inherit;font-size:16px}

.container{width:100%;max-width:var(--cont);margin:0 auto;padding:0 24px}
@media (min-width:1200px){.container{padding:0 32px}}

/* ===== 悬浮胶囊导航 ===== */
.site-header{position:sticky;top:0;z-index:60;padding:16px 0 0;pointer-events:none}
.site-nav{
  pointer-events:auto;
  position:relative;
  width:min(1120px,92%);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:16px;
  padding:0 14px 0 22px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(26,23,32,.08);
  border-radius:var(--r-pill);
  box-shadow:0 8px 24px -12px rgba(36,27,54,.24);
  transition:height 200ms var(--ease),background-color 200ms var(--ease);
}
.site-nav.is-scrolled{height:56px;background:rgba(255,255,255,.95)}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:9px;
  background:var(--c-primary);color:var(--c-accent);
  font-size:12px;font-weight:800;letter-spacing:.02em;
  font-family:Inter,"HarmonyOS Sans SC",system-ui,sans-serif;
  text-transform:lowercase;
}
.logo-text{font-size:17px;font-weight:750;color:var(--c-primary);letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  font-weight:550;
  color:var(--text-sub);
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:color 200ms var(--ease),background-color 200ms var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%) scaleX(0);
  width:22px;height:2px;border-radius:2px;background:var(--c-accent);
  transition:transform 200ms var(--ease);
}
.nav-links a:hover{color:var(--c-primary);background:rgba(36,27,54,.05)}
.nav-links a.is-active{color:var(--c-primary);font-weight:650}
.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-pill);
  color:var(--c-primary);background:rgba(36,27,54,.06);font-size:16px;
  align-items:center;justify-content:center;
  transition:background-color 200ms var(--ease)
}
.nav-toggle:hover{background:rgba(36,27,54,.12)}

/* ===== 按钮 ===== */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:650;letter-spacing:.01em;line-height:1;
  white-space:nowrap;cursor:pointer;
  transition:background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.btn::before{
  content:"";position:absolute;inset:0 auto 0 -60%;width:40%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);
  transform:translateX(0);opacity:0;transition:transform 480ms var(--ease),opacity 240ms var(--ease);
}
.btn:hover::before{transform:translateX(320%);opacity:1}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--c-primary);color:var(--text-inv);border:1px solid var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:var(--text-inv);box-shadow:var(--sh-1)}
.btn-accent{background:var(--c-accent);color:#1A1720;border:1px solid var(--c-accent)}
.btn-accent:hover{background:#2ACBB1;border-color:#2ACBB1;color:#1A1720;box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary);color:var(--text-inv)}
.btn:active{transform:translateY(1px)}

/* ===== 面包屑 ===== */
.crumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:14px 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-weak)}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--c-primary-soft)}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--text-weak)}

/* ===== Hero 窄幅条 ===== */
.page-hero{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:52px 0 48px}
.page-hero .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1;
}
.badge-primary{background:rgba(36,27,54,.08);color:var(--c-primary)}
.badge-accent{background:rgba(55,228,200,.18);color:#12615A}
.badge-hot{background:rgba(255,122,69,.14);color:#9C3D14}
.page-hero h1{font-size:clamp(30px,4.2vw,48px);line-height:1.14;max-width:900px}
.page-hero .hero-sub{margin-top:18px;max-width:720px;color:var(--text-sub);font-size:17px;line-height:1.8}
.page-hero .hero-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--text-weak)}
.page-hero .hero-meta span{display:inline-flex;align-items:center;gap:6px}
.page-hero .hero-meta i{color:var(--c-primary-soft)}

/* ===== 主体排版 ===== */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--bg-dark);color:var(--text-inv)}
.section-dark h2,.section-dark h3,.section-dark p{color:var(--text-inv)}

.sec-head{margin-bottom:32px}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);position:relative;padding-left:18px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--c-accent);
}
.sec-head .sec-desc{margin-top:14px;color:var(--text-sub);max-width:760px}
.sec-head .underline{display:block;width:56px;height:4px;border-radius:2px;background:var(--c-accent);margin-top:16px}

/* ===== 主区域 8 + 4 ===== */
.layout-grid{align-items:flex-start}
.main-col{padding-right:8px}
.side-col{padding-left:8px}
@media (max-width:1023px){
  .main-col{padding-right:0}
  .side-col{padding-left:0;margin-top:40px}
}

.lead-text{font-size:17px;color:var(--text-sub);line-height:1.85;max-width:720px}
.lead-text strong{color:var(--text);font-weight:650}

/* ===== 时间线 ===== */
.timeline{position:relative;margin:8px 0 0;padding:0}
.timeline::before{
  content:"";position:absolute;left:27px;top:16px;bottom:16px;width:1px;background:var(--line);
}
.tl-item{position:relative;padding-left:76px;padding-bottom:40px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:0;top:0;width:56px;height:56px;border-radius:50%;
  background:var(--bg);border:1px solid var(--c-accent);
  color:var(--c-primary);font-weight:750;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  font-family:Inter,"HarmonyOS Sans SC",system-ui,sans-serif;
  letter-spacing:.01em;
}
.tl-item h3{font-size:20px;margin-bottom:10px}
.tl-item p{color:var(--text-sub);font-size:16px;line-height:1.8;margin-bottom:14px;max-width:640px}
.tl-tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  background:rgba(36,27,54,.08);color:var(--c-primary);
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
}
.tl-tag i{color:var(--c-primary-soft);font-size:11px}

/* ===== 配图区 ===== */
.figure-block{margin:40px 0 0}
.figure-block .img-wrap{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  background:rgba(36,27,54,.08);aspect-ratio:16/9;box-shadow:var(--sh-1);
}
.figure-block img{width:100%;height:100%;object-fit:cover;transition:transform 480ms var(--ease)}
.figure-block .img-wrap:hover img{transform:scale(1.03)}
.figure-block figcaption{margin-top:12px;font-size:13px;color:var(--text-weak);text-align:center;line-height:1.6}

/* ===== 核对清单 ===== */
.check-list{margin-top:8px}
.check-list li{
  position:relative;padding:14px 0 14px 34px;
  border-bottom:1px solid var(--line);
  color:var(--text-sub);font-size:16px;line-height:1.7;
}
.check-list li:last-child{border-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:6px;top:26px;width:8px;height:8px;border-radius:50%;
  background:var(--c-accent);box-shadow:0 0 0 4px rgba(55,228,200,.16);
}
.check-list li b{color:var(--text);font-weight:650}

/* ===== 侧栏粘性卡 ===== */
.side-sticky{position:sticky;top:96px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);margin-bottom:20px;
  transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease);
}
.side-card:hover{box-shadow:var(--sh-2);border-color:rgba(55,228,200,.45);transform:translateY(-4px)}
.side-card h3{font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.side-card h3 i{color:var(--c-primary-soft);font-size:15px}
.side-list li{
  position:relative;padding:9px 0 9px 18px;font-size:15px;color:var(--text-sub);line-height:1.65;
  border-bottom:1px dashed var(--line);
}
.side-list li:last-child{border-bottom:0}
.side-list li::before{
  content:"";position:absolute;left:0;top:18px;width:6px;height:6px;border-radius:2px;background:var(--c-accent);
}
.side-cta{margin-top:6px;width:100%}
.side-note{font-size:13px;color:var(--text-weak);margin:12px 0 0;line-height:1.7}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px}
.faq-accordion.accordion{border:0;background:transparent;margin:0}
.faq-accordion .accordion-item{border:0;border-top:1px solid var(--line)}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px 22px 0;border:0;
  font-size:17px;font-weight:650;color:var(--text);line-height:1.5;
  background:transparent;
  transition:color 200ms var(--ease);
}
.faq-accordion .accordion-title:hover{color:var(--c-primary-soft)}
.faq-accordion .accordion-title::before{
  content:"\2b";order:2;flex:0 0 auto;
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--c-primary-soft);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform 240ms var(--ease),background-color 240ms var(--ease),border-color 240ms var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  transform:rotate(45deg);border-color:var(--c-accent);background:rgba(55,228,200,.14);
}
.faq-accordion .accordion-content{
  padding:0 4px 24px 0;border:0;background:transparent;
  color:var(--text-sub);font-size:16px;line-height:1.85;
}
.faq-accordion .accordion-content p{margin-bottom:0}

/* ===== CTA 条 ===== */
.cta-band{background:var(--bg-dark);padding:80px 0;position:relative;overflow:hidden}
.cta-band::after{
  content:"pg";position:absolute;right:-10px;bottom:-40px;
  font-size:190px;font-weight:800;letter-spacing:-.04em;
  color:rgba(245,242,236,.05);line-height:1;pointer-events:none;
  font-family:Inter,system-ui,sans-serif;
}
.cta-band .cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;position:relative;z-index:1}
.cta-band h2{font-size:clamp(24px,3vw,34px);color:var(--text-inv);max-width:560px}
.cta-band p{color:rgba(245,242,236,.72);margin:14px 0 0;font-size:16px;max-width:600px}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-dark);color:var(--text-inv);padding:72px 0 0;margin-top:0}
.footer-grid{gap:32px 24px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text{color:var(--text-inv)}
.footer-brand p{color:rgba(245,242,236,.72);font-size:14px;line-height:1.8;max-width:320px}
.footer-meta{color:rgba(245,242,236,.55)!important;font-size:13px!important;margin-top:10px}
.footer-col h4{font-size:14px;font-weight:650;color:var(--text-inv);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:rgba(245,242,236,.72)}
.footer-col ul li a:hover{color:var(--c-accent)}
.footer-col .plain{font-size:14px;color:rgba(245,242,236,.72);line-height:1.9}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(245,242,236,.6);
}
.footer-bottom span{line-height:1.7}

/* ===== 入场动效 ===== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 560ms var(--ease),transform 560ms var(--ease)}
.reveal.in-view{opacity:1;transform:none}

/* ===== 移动端导航 ===== */
@media (max-width:767px){
  .site-nav{width:94%;padding:0 10px 0 16px;height:58px}
  .nav-links{
    display:none;
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:rgba(255,255,255,.98);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border:1px solid rgba(26,23,32,.08);
    border-radius:24px;padding:12px;box-shadow:var(--sh-2);
  }
  .site-nav.nav-open .nav-links{display:flex}
  .nav-links a{padding:16px 18px;font-size:18px;line-height:24px;border-radius:16px;width:100%}
  .nav-links a::after{display:none}
  .nav-links a.is-active{background:rgba(55,228,200,.14)}
  .nav-toggle{display:inline-flex}
  .nav-right .btn-primary{display:none}
  .section{padding:56px 0}
  .page-hero{padding:38px 0 34px}
  .tl-item{padding-left:64px;padding-bottom:32px}
  .tl-num{width:46px;height:46px;font-size:15px}
  .timeline::before{left:23px}
  .cta-band{padding:56px 0}
  .cta-band::after{font-size:120px}
  .site-footer{padding-top:52px}
  .footer-bottom{margin-top:36px}
}
@media (min-width:768px) and (max-width:991px){
  .section{padding:72px 0}
  .nav-links a{padding:8px 10px;font-size:14px}
}
@media (max-width:519px){
  .page-hero h1{font-size:28px}
  .btn{width:100%}
  .cta-band .cta-actions{width:100%}
  .side-card{padding:22px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --c-primary:#241B36;
  --c-primary-deep:#1C1630;
  --c-primary-light:#4A3A6E;
  --c-accent:#37E4C8;
  --c-hot:#FF7A45;
  --bg:#F7F5F1;
  --bg-alt:#EFEBE4;
  --bg-soft:#F2EFE8;
  --bg-dark:#1C1630;
  --text:#1A1720;
  --text-2:#5C5666;
  --text-weak:#8A8494;
  --text-invert:#F5F2EC;
  --line:#E3DED5;
  --line-dark:rgba(255,255,255,.10);
  --r-card:18px;
  --r-sm:12px;
  --r-img:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(26,23,32,.04), 0 12px 32px -16px rgba(36,27,54,.18);
  --sh-2:0 2px 4px rgba(26,23,32,.06), 0 24px 48px -20px rgba(36,27,54,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --font:"HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font);
  color:var(--text);
  margin:0;
  letter-spacing:-0.01em;
}
p{margin:0 0 1.2em;}
a{color:var(--c-primary);text-decoration:none;transition:color 200ms var(--ease);}
a:hover{color:var(--c-primary-light);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
  border-radius:6px;
}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:16px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1200px){
  .container{padding:0 32px;}
}
.section{padding:96px 0;}
.section--alt{background:var(--bg-alt);}
.section--tight{padding:72px 0;}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
}
@media (max-width:575px){
  .section{padding:56px 0;}
  body{font-size:16px;}
}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:650;letter-spacing:.08em;
  color:var(--c-primary-light);text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";width:24px;height:2px;background:var(--c-accent);border-radius:2px;
}
h2.sec-title{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:750;line-height:1.2;
  letter-spacing:-0.02em;
}
h2.sec-title .u{
  display:block;width:64px;height:4px;border-radius:2px;
  background:var(--c-accent);margin-top:18px;
}
.sec-head--center h2.sec-title .u{margin-left:auto;margin-right:auto;}
.sec-sub{
  margin-top:18px;color:var(--text-2);font-size:17px;line-height:1.8;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:650;letter-spacing:.01em;
  border:1px solid transparent;position:relative;overflow:hidden;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn::after{
  content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(90deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.28) 50%,rgba(255,255,255,0) 100%);
  transform:translateX(0);transition:transform 420ms var(--ease);
  pointer-events:none;
}
.btn:hover::after{transform:translateX(320%);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:var(--text-invert);}
.btn-primary:hover{background:var(--c-primary-deep);color:var(--text-invert);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{background:var(--c-accent);color:#1A1720;}
.btn-accent:hover{background:#25cdb3;color:#1A1720;}
.btn-accent:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary);color:var(--text-invert);}
.btn-ghost-light{background:transparent;color:var(--text-invert);border-color:rgba(245,242,236,.42);}
.btn-ghost-light:hover{background:var(--text-invert);color:var(--c-primary-deep);border-color:var(--text-invert);}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;}
.btn-row--center{justify-content:center;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1;
  background:rgba(36,27,54,.08);color:var(--c-primary);
}
.badge--accent{background:rgba(55,228,200,.20);color:#146a5c;}
.badge--hot{background:rgba(255,122,69,.16);color:#b53c10;}
.badge--dark{background:rgba(255,255,255,.10);color:var(--text-invert);}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:var(--bg-soft);color:var(--text-2);border:1px solid var(--line);
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:16px;z-index:120;
  padding:0;margin-top:16px;
}
.site-nav{
  position:relative;
  width:min(1120px,92%);
  margin:0 auto;
  height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:0 12px 0 18px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(26,23,32,.08);
  border-radius:var(--r-pill);
  box-shadow:0 8px 24px -12px rgba(36,27,54,.24);
  transition:height 200ms var(--ease),background 200ms var(--ease);
}
.site-header.is-scrolled .site-nav{
  height:56px;
  background:rgba(255,255,255,.95);
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--c-primary);color:var(--c-accent);
  font-size:13px;font-weight:800;letter-spacing:.02em;
  font-family:Inter,-apple-system,system-ui,sans-serif;
  transition:transform 220ms var(--ease);
}
.logo:hover .logo-mark{transform:rotate(-6deg);}
.logo-text{font-size:17px;font-weight:750;color:var(--text);letter-spacing:-0.01em;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;
  padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--text-2);
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%) scaleX(0);
  width:22px;height:2px;border-radius:2px;background:var(--c-accent);
  transition:transform 200ms var(--ease);
}
.nav-links a:hover{color:var(--c-primary);background:rgba(36,27,54,.05);}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-links a.is-active{color:var(--c-primary);}
.nav-links a.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:var(--r-pill);
  background:var(--c-primary);color:var(--text-invert);
  border:none;font-size:16px;
  align-items:center;justify-content:center;
  transition:background 180ms var(--ease);
}
.nav-toggle:hover{background:var(--c-primary-deep);}
@media (max-width:900px){
  .nav-links a{padding:8px 10px;font-size:14px;}
}
@media (max-width:767px){
  .site-header{top:10px;margin-top:10px;}
  .site-nav{padding:0 10px 0 14px;height:60px;}
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border:1px solid var(--line);
    border-radius:22px;padding:12px;
    box-shadow:var(--sh-2);
  }
  .site-nav.is-open .nav-links{display:flex;}
  .nav-links a{
    font-size:18px;line-height:56px;padding:0 16px;border-radius:14px;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{background:rgba(55,228,200,.14);}
}

/* ---------- Hero（深色居中） ---------- */
.hero{
  background:var(--bg-dark);
  color:var(--text-invert);
  padding:96px 0;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"南宫";
  position:absolute;top:-40px;left:50%;transform:translateX(-50%);
  font-size:min(340px,44vw);font-weight:800;line-height:1;
  color:rgba(255,255,255,.04);
  -webkit-text-stroke:1px rgba(255,255,255,.06);
  pointer-events:none;user-select:none;white-space:nowrap;
}
.hero-inner{position:relative;z-index:2;max-width:860px;margin:0 auto;text-align:center;}
.crumb{
  display:flex;justify-content:center;align-items:center;gap:8px;
  font-size:13px;color:rgba(245,242,236,.58);margin-bottom:28px;
}
.crumb a{color:rgba(245,242,236,.78);}
.crumb a:hover{color:var(--c-accent);}
.crumb .sep{color:rgba(245,242,236,.34);}
.crumb .now{color:rgba(245,242,236,.55);}
.hero h1{
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;line-height:1.14;letter-spacing:-0.02em;
  color:var(--text-invert);
  margin:0 0 24px;
}
.hero h1 .line{display:block;opacity:0;transform:translateY(14px);animation:lineIn 600ms var(--ease) forwards;}
.hero h1 .line:nth-child(1){animation-delay:60ms;}
.hero h1 .line:nth-child(2){animation-delay:120ms;}
@keyframes lineIn{to{opacity:1;transform:translateY(0);}}
.hero h1 .hl{color:var(--c-accent);}
.hero-lead{
  font-size:17px;line-height:1.85;color:rgba(245,242,236,.76);
  max-width:660px;margin:0 auto 34px;
}
.hero .btn-ghost-light{color:var(--text-invert);}
.hero-note{
  margin-top:30px;display:flex;flex-wrap:wrap;justify-content:center;
  gap:8px 18px;font-size:13px;color:rgba(245,242,236,.58);
}
.hero-note span{display:inline-flex;align-items:center;gap:8px;}
.hero-note span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-accent);}
@media (max-width:767px){
  .hero{padding:72px 0;}
}
@media (max-width:575px){
  .hero{padding:56px 0;}
  .hero h1{font-size:28px;}
}

/* ---------- 指标条 ---------- */
.metric-band{
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  padding:34px 0;
}
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{
  display:flex;flex-direction:column;gap:6px;
  padding-left:18px;border-left:2px solid var(--c-accent);
}
.metric .num{
  font-size:24px;font-weight:750;letter-spacing:-0.01em;
  font-family:Inter,var(--font);
}
.metric .lbl{font-size:13px;color:var(--text-weak);line-height:1.6;}
@media (max-width:991px){
  .metric-row{grid-template-columns:repeat(2,1fr);gap:20px;}
}
@media (max-width:575px){
  .metric-row{grid-template-columns:1fr;gap:18px;}
}

/* ---------- 图片带 ---------- */
.figure-band{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--sh-1);
}
.figure-band img{
  width:100%;
  height:clamp(200px,26vw,320px);
  object-fit:cover;
  object-position:center;
}
.figure-cap{
  padding:16px 24px;
  font-size:13px;color:var(--text-weak);
  border-top:1px solid var(--line);
  text-align:center;
}
.figure-text{margin-top:28px;max-width:820px;}
.figure-text p{color:var(--text-2);margin-bottom:0;}

/* ---------- 对比卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.panel:hover{transform:translateY(-4px);border-color:rgba(55,228,200,.34);box-shadow:var(--sh-2);}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.panel-icon{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;font-size:15px;
}
.panel--do .panel-icon{background:rgba(55,228,200,.18);color:#146a5c;}
.panel--dont .panel-icon{background:rgba(255,122,69,.16);color:#b53c10;}
.panel h3{font-size:20px;font-weight:650;line-height:1.35;}
.panel .panel-note{font-size:13px;color:var(--text-weak);margin-bottom:20px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-top:1px solid var(--line);
  font-size:16px;line-height:1.7;color:var(--text-2);
}
.check-list li:first-child{border-top:none;padding-top:0;}
.check-list li i{flex:0 0 auto;margin-top:6px;font-size:13px;}
.panel--do .check-list li i{color:#12796a;}
.panel--dont .check-list li i{color:#c14a1c;}
@media (max-width:767px){
  .compare-grid{grid-template-columns:1fr;}
  .panel{padding:24px;}
}

/* ---------- FAQ 手风琴 ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.accordion{
  background:transparent;
  border-top:1px solid var(--line);
  list-style:none;margin:0;
}
.accordion-item{border-bottom:1px solid var(--line);}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;
  padding:22px 4px;
  font-size:17px;font-weight:650;line-height:1.6;color:var(--text);
  background:transparent;border:none;text-align:left;
  transition:color 200ms var(--ease);
}
.accordion-title::before,
.accordion-title::after{display:none !important;content:none !important;}
.accordion-title:hover{color:var(--c-primary-light);}
.accordion-title .faq-icon{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);
  font-size:12px;color:var(--c-primary);
  transition:transform 240ms var(--ease),background 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease);
}
.accordion-item.is-open .faq-icon{
  transform:rotate(45deg);
  background:var(--c-accent);color:#1A1720;border-color:var(--c-accent);
}
.accordion-content{
  display:none;
  padding:0 60px 24px 4px;
  background:transparent;border:none;
  color:var(--text-2);font-size:16px;line-height:1.85;
}
.accordion-item.is-open .accordion-content{display:block;}
.accordion-content p{margin:0;}
@media (max-width:575px){
  .accordion-title{font-size:16px;padding:18px 2px;}
  .accordion-content{padding:0 8px 20px 2px;}
}

/* ---------- 表格 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  overflow-x:auto;
  box-shadow:var(--sh-1);
}
table.rules{
  width:100%;
  min-width:640px;
  border-collapse:collapse;
  font-size:15px;
}
table.rules th,
table.rules td{
  padding:18px 22px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.rules thead th{
  background:var(--bg-soft);
  font-size:14px;font-weight:650;color:var(--text-2);
  white-space:nowrap;
}
table.rules tbody th{
  font-weight:650;color:var(--text);
  width:180px;
}
table.rules tbody td{color:var(--text-2);}
table.rules tbody tr:last-child th,
table.rules tbody tr:last-child td{border-bottom:none;}

/* ---------- CTA ---------- */
.cta{
  background:var(--bg-dark);
  color:var(--text-invert);
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta::after{
  content:"pg";
  position:absolute;right:-10px;bottom:-60px;
  font-size:220px;font-weight:800;line-height:1;
  color:rgba(255,255,255,.035);
  font-family:Inter,var(--font);
  pointer-events:none;user-select:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:start;
}
.cta h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:750;line-height:1.25;
  color:var(--text-invert);
  margin-bottom:16px;
}
.cta p{color:rgba(245,242,236,.72);font-size:16px;max-width:460px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.cta-points span{
  font-size:13px;color:rgba(245,242,236,.72);
  border:1px solid var(--line-dark);border-radius:var(--r-pill);
  padding:5px 14px;
}
.form-card{
  background:#fff;border-radius:var(--r-card);
  padding:28px;border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.form-card h3{
  font-size:19px;font-weight:650;color:var(--text);
  margin-bottom:6px;
}
.form-card .form-note{font-size:13px;color:var(--text-weak);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{
  display:block;font-size:14px;font-weight:600;
  color:var(--text-2);margin-bottom:8px;
}
.field input,
.field select{
  width:100%;height:48px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--text);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field input:focus,
.field select:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(55,228,200,.35);
}
.field.has-error input,
.field.has-error select{border-color:var(--c-hot);}
.field .err{display:none;margin-top:6px;font-size:13px;color:#c14a1c;}
.field.has-error .err{display:block;}
.form-card .btn{width:100%;}
.form-tip{margin-top:14px;font-size:13px;color:var(--text-weak);margin-bottom:0;}
@media (max-width:991px){
  .cta-inner{grid-template-columns:1fr;gap:36px;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-dark);
  color:var(--text-invert);
  padding:72px 0 0;
}
.footer-grid{padding-bottom:48px;}
.footer-brand .logo{margin-bottom:18px;}
.site-footer .logo-text{color:var(--text-invert);}
.site-footer .logo-mark{background:var(--c-accent);color:var(--c-primary-deep);}
.footer-brand p{
  font-size:14px;line-height:1.8;
  color:rgba(245,242,236,.72);
  max-width:320px;margin-bottom:12px;
}
.footer-meta{font-size:13px !important;color:rgba(245,242,236,.55) !important;}
.footer-col h4{
  font-size:14px;font-weight:650;color:var(--text-invert);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  font-size:14px;color:rgba(245,242,236,.72);
  transition:color 180ms var(--ease);
}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-col .plain{
  font-size:14px;line-height:1.9;color:rgba(245,242,236,.72);
  margin-bottom:0;
}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(245,242,236,.55);
}
@media (max-width:991px){
  .footer-grid .cell{margin-bottom:32px;}
  .site-footer{padding-top:56px;}
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity 560ms var(--ease),transform 560ms var(--ease);
}
.reveal.in-view{opacity:1;transform:translateY(0);}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1 !important;transform:none !important;}
  .hero h1 .line{opacity:1 !important;transform:none !important;}
  .btn:hover::after{transform:none !important;}
}