/* roulang page: index */
:root{
  --primary:#0E7C86;
  --primary-600:#0B6770;
  --primary-800:#084C54;
  --primary-soft:rgba(14,124,134,.12);
  --primary-soft-2:rgba(14,124,134,.08);
  --amber:#F2A93B;
  --amber-600:#D9902A;
  --ink:#16323A;
  --body:#3A4A50;
  --muted:#7A8B90;
  --bg:#F6F9FA;
  --surface:#FFFFFF;
  --soft:#EDF4F5;
  --border:#DCE7E9;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-input:10px;
  --shadow-1:0 2px 12px rgba(22,50,58,.06);
  --shadow-2:0 8px 24px rgba(22,50,58,.12);
  --shadow-nav:0 2px 16px rgba(22,50,58,.08);
  --sec-space:80px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--body);
  background:var(--bg);
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-600);text-decoration:underline;}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;}
h1{font-size:40px;line-height:1.16;letter-spacing:-.4px;}
h2{font-size:28px;line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
button,input,select,textarea{font:inherit;}
:focus-visible{outline:3px solid rgba(242,169,59,.75);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
.section{padding:var(--sec-space) 0;}
.section-soft{background:var(--soft);}
.section-ink{background:var(--ink);color:#D6E3E5;}
.section-ink h2,.section-ink h3{color:#fff;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head h2{position:relative;padding-left:18px;margin-bottom:12px;}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--primary);}
.section-ink .sec-head h2::before{background:var(--amber);}
.sec-head p{color:var(--muted);font-size:16px;margin:0;}
.section-ink .sec-head p{color:#9EB6BA;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:7px 16px;margin-bottom:18px;}
.section-ink .eyebrow{color:var(--amber);background:rgba(242,169,59,.14);}

/* header */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .25s ease,border-color .25s ease;}
.site-header.shrink{box-shadow:var(--shadow-nav);border-bottom-color:var(--border);}
.nav-inner{display:flex;align-items:center;gap:20px;height:78px;transition:height .25s ease;}
.site-header.shrink .nav-inner{height:64px;}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{width:40px;height:40px;border-radius:12px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;letter-spacing:.5px;box-shadow:0 6px 14px rgba(14,124,134,.28);}
.brand-text{font-weight:700;color:var(--ink);font-size:16px;line-height:1.25;}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.6px;}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link-custom{position:relative;display:inline-block;padding:9px 15px;border-radius:10px;font-size:15px;font-weight:500;color:var(--body);text-decoration:none;transition:background .2s ease,color .2s ease;}
.nav-link-custom:hover{color:var(--primary);background:var(--primary-soft-2);text-decoration:none;}
.nav-link-custom.active{color:var(--primary);background:var(--primary-soft);font-weight:600;}
.nav-link-custom.active::after{content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);}
.nav-cta{margin-left:12px;flex:0 0 auto;}
.btn-main,.btn-ghost,.btn-amber{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease;}
.btn-main{background:var(--primary);color:#fff;border-radius:var(--radius-btn);padding:13px 26px;box-shadow:0 6px 16px rgba(14,124,134,.22);}
.btn-main:hover{background:var(--primary-600);color:#fff;transform:scale(1.02);text-decoration:none;}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);border-radius:var(--radius-btn);padding:13px 26px;}
.btn-ghost:hover{background:var(--primary-soft-2);color:var(--primary-600);text-decoration:none;}
.btn-amber{background:var(--amber);color:var(--ink);border-radius:999px;padding:14px 32px;font-weight:700;}
.btn-amber:hover{background:var(--amber-600);color:var(--ink);transform:scale(1.02);text-decoration:none;}
.btn-sm-main{background:var(--primary);color:#fff;border-radius:10px;padding:8px 16px;font-size:14px;font-weight:600;}
.btn-sm-main:hover{background:var(--primary-600);color:#fff;text-decoration:none;}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--ink);align-items:center;justify-content:center;}
.mobile-drawer{display:none;border-top:1px solid var(--border);background:#fff;padding:14px 0 20px;}
.mobile-drawer .nav-link-custom{display:block;margin:4px 0;}
@media (max-width:991.98px){
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-drawer.open{display:block;}
}

/* hero */
.hero{position:relative;padding:64px 0 72px;background:var(--bg);overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center right;opacity:.10;pointer-events:none;}
.hero-inner{position:relative;}
.hero h1{margin-bottom:18px;}
.hero-sub{font-size:19px;color:var(--primary-800);font-weight:600;margin-bottom:16px;}
.hero-desc{max-width:560px;color:var(--body);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:18px;margin-top:34px;padding-top:26px;border-top:1px dashed var(--border);}
.hero-fact{min-width:120px;}
.hero-fact b{display:block;font-size:26px;color:var(--primary);font-weight:700;line-height:1.2;}
.hero-fact span{font-size:14px;color:var(--muted);}
.hero-visual{position:relative;max-width:360px;margin-left:auto;}
.hero-visual .frame{position:relative;border-radius:22px;overflow:hidden;box-shadow:var(--shadow-2);background:var(--soft);aspect-ratio:3/4;}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover;}
.status-badge{position:absolute;top:16px;left:16px;z-index:2;display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.94);color:var(--primary-800);font-size:13px;font-weight:600;border-radius:999px;padding:7px 14px;box-shadow:var(--shadow-1);}
.dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(14,124,134,.18);}
.visual-caption{position:absolute;left:16px;right:16px;bottom:16px;z-index:2;background:rgba(22,50,58,.82);color:#fff;border-radius:14px;padding:14px 16px;font-size:14px;line-height:1.6;}
.visual-caption b{display:block;font-size:15px;color:#fff;margin-bottom:2px;}

/* stats strip */
.stats-strip{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:34px 0;}
.stat-cell{text-align:left;padding:6px 0;}
.stat-cell b{display:block;font-size:30px;font-weight:700;color:var(--amber);line-height:1.15;}
.stat-cell strong{display:block;font-size:16px;color:var(--ink);font-weight:600;margin-bottom:4px;}
.stat-cell span{font-size:14px;color:var(--muted);}

/* scroller cards */
.scroller{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 20px;-webkit-overflow-scrolling:touch;}
.scroller::-webkit-scrollbar{height:8px;}
.scroller::-webkit-scrollbar-thumb{background:#CBDDE0;border-radius:8px;}
.slide-card{flex:0 0 calc((100% - 66px)/3.5);scroll-snap-align:start;background:var(--surface);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;display:flex;flex-direction:column;}
.slide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.slide-media{position:relative;aspect-ratio:16/10;background:var(--soft);overflow:hidden;}
.slide-media img{width:100%;height:100%;object-fit:cover;}
.slide-tag{position:absolute;top:12px;left:12px;background:rgba(22,50,58,.86);color:#fff;font-size:12px;font-weight:600;border-radius:999px;padding:5px 12px;}
.slide-time{position:absolute;bottom:12px;right:12px;background:rgba(242,169,59,.94);color:var(--ink);font-size:12px;font-weight:700;border-radius:8px;padding:4px 10px;}
.slide-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.slide-body h3{font-size:17px;}
.slide-body p{font-size:14px;color:var(--muted);line-height:1.7;margin:0;}
.slide-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;}
@media (max-width:1199.98px){.slide-card{flex:0 0 calc((100% - 44px)/2.4);}}
@media (max-width:767.98px){.slide-card{flex:0 0 82%;}}

/* timeline */
.steps-timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;}
.step-card{position:relative;background:var(--surface);border-radius:var(--radius-card);padding:26px 22px 24px;box-shadow:var(--shadow-1);border:1px solid var(--border);transition:transform .25s ease,box-shadow .25s ease;}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);font-weight:700;margin-bottom:14px;}
.step-card h3{font-size:18px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0;}
.step-card::after{content:"";position:absolute;right:-13px;top:46px;width:14px;height:2px;background:var(--border);}
.step-card:last-child::after{display:none;}
@media (max-width:991.98px){
  .steps-timeline{grid-template-columns:repeat(2,1fr);}
  .step-card::after{display:none;}
}
@media (max-width:575.98px){.steps-timeline{grid-template-columns:1fr;}}

/* checklist */
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-item{display:flex;gap:20px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(14,124,134,.35);}
.check-index{font-size:22px;font-weight:700;color:var(--amber);line-height:1;min-width:44px;letter-spacing:-.5px;}
.check-icon{width:42px;height:42px;flex:0 0 42px;border-radius:12px;background:var(--soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:17px;}
.check-main{flex:1;}
.check-main h3{font-size:18px;margin-bottom:6px;}
.check-main p{font-size:15px;color:var(--muted);margin:0;line-height:1.75;}
.check-arrow{color:var(--primary);font-size:16px;align-self:center;}
@media (max-width:575.98px){
  .check-item{flex-wrap:wrap;gap:14px;}
  .check-arrow{display:none;}
}

/* latest / cms */
.post-card{display:flex;flex-direction:column;height:100%;background:var(--surface);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;text-decoration:none;color:inherit;}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);text-decoration:none;color:inherit;}
.post-cover{aspect-ratio:16/9;background:var(--soft);overflow:hidden;}
.post-cover img{width:100%;height:100%;object-fit:cover;}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-soft{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:600;border-radius:999px;padding:5px 12px;}
.post-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body p{font-size:14.5px;color:var(--muted);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);padding-top:12px;border-top:1px dashed var(--border);}
.post-meta .more{color:var(--primary);font-weight:600;}
.empty-state{background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius-card);padding:56px 24px;text-align:center;}
.empty-state i{font-size:38px;color:var(--primary);opacity:.65;}
.empty-state p{color:var(--muted);margin:16px 0 20px;}

/* reviews */
.review-track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:16px;}
.review-card{flex:0 0 300px;scroll-snap-align:start;background:var(--surface);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1);border:1px solid var(--border);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{width:40px;height:40px;border-radius:50%;flex:0 0 40px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:700;}
.review-name{font-size:15px;font-weight:600;color:var(--ink);line-height:1.3;}
.review-name span{display:block;font-size:12px;color:var(--muted);font-weight:400;}
.review-text{font-size:15px;color:var(--body);margin:0 0 10px;}
.stars{color:var(--amber);font-size:13px;letter-spacing:2px;}
@media (max-width:575.98px){.review-card{flex:0 0 84%;}}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-img);overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease;}
.faq-item[open]{box-shadow:var(--shadow-1);border-color:rgba(14,124,134,.3);}
.faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 22px;font-weight:600;color:var(--ink);cursor:pointer;font-size:16.5px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;transition:transform .25s ease;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-body{padding:0 22px 22px;background:var(--soft);color:var(--body);font-size:15.5px;}
.faq-body p{padding-top:16px;margin:0;}

/* cta band */
.cta-band{background:var(--ink);color:#D6E3E5;border-radius:22px;padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;box-shadow:var(--shadow-2);}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-band p{margin:0;color:#9EB6BA;font-size:15.5px;}
@media (max-width:767.98px){.cta-band{padding:32px 24px;}.cta-band .btn-amber{width:100%;}}

/* footer */
.site-footer{background:var(--ink);color:#B9CDD0;padding:64px 0 26px;margin-top:0;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px;font-weight:600;}
.site-footer a{color:#B9CDD0;font-size:15px;text-decoration:none;}
.site-footer a:hover{color:var(--amber);text-decoration:none;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;color:#fff;}
.footer-brand b{color:#fff;font-size:16px;}
.footer-about{font-size:14.5px;line-height:1.85;color:#94ADB1;max-width:320px;}
.footer-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-contact{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;font-size:14.5px;color:#94ADB1;}
.footer-contact i{color:var(--amber);width:18px;}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:#7E979B;}

/* mobile tabbar */
.mobile-tabbar{position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;background:rgba(255,255,255,.98);border-top:1px solid var(--border);box-shadow:0 -2px 16px rgba(22,50,58,.08);padding:6px 4px 8px;}
.mobile-tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;font-size:11.5px;color:var(--muted);text-decoration:none;padding:6px 0;border-radius:10px;font-weight:500;}
.mobile-tabbar a i{font-size:17px;}
.mobile-tabbar a.active{color:var(--primary);background:var(--primary-soft-2);font-weight:600;}
.mobile-tabbar a:hover{text-decoration:none;color:var(--primary);}
@media (max-width:767.98px){
  .mobile-tabbar{display:flex;}
  body{padding-bottom:74px;}
  h1{font-size:28px;line-height:1.3;}
  h2{font-size:23px;}
  :root{--sec-space:48px;}
  .container{padding-left:16px;padding-right:16px;}
  .hero{padding:40px 0 48px;}
  .hero-visual{max-width:300px;margin:32px auto 0;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
}

/* roulang page: article */
:root{
  --brand:#0E7C86;
  --brand-600:#0B6B74;
  --brand-700:#095259;
  --brand-tint:rgba(14,124,134,.12);
  --amber:#F2A93B;
  --amber-soft:rgba(242,169,59,.16);
  --ink:#16323A;
  --ink-800:#1D3F48;
  --body:#3A4A50;
  --muted:#7A8B90;
  --bg:#F6F9FA;
  --soft:#EDF4F5;
  --white:#FFFFFF;
  --line:#DFE9EB;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-1:0 2px 12px rgba(22,50,58,.06);
  --sh-2:0 8px 24px rgba(22,50,58,.12);
  --sh-nav:0 2px 16px rgba(22,50,58,.08);
  --max:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;margin:0;}
p{margin:0 0 1.2em;}
ul,ol{margin:0 0 1.2em;padding-left:1.4em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.container{max-width:var(--max);padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,249,250,.94);
  border-bottom:1px solid transparent;
  transition:background-color .3s ease,box-shadow .3s ease,border-color .3s ease;
  backdrop-filter:saturate(160%) blur(10px);
}
.site-header.scrolled{background:rgba(255,255,255,.97);border-bottom-color:var(--line);box-shadow:var(--sh-nav);}
.nav-inner{display:flex;align-items:center;gap:18px;height:78px;transition:height .3s ease;}
.site-header.scrolled .nav-inner{height:66px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);flex:0 0 auto;max-width:330px;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:var(--brand);color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(14,124,134,.28);
}
.brand-text{font-size:17px;font-weight:700;line-height:1.25;display:flex;flex-direction:column;}
.brand-sub{font-size:11.5px;font-weight:400;color:var(--muted);letter-spacing:.3px;margin-top:2px;}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link-custom{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 13px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-800);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link-custom:hover{color:var(--brand);background:var(--brand-tint);}
.nav-link-custom.active{color:var(--brand);background:var(--brand-tint);}
.nav-link-custom.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;
  background:var(--brand);border-radius:2px;
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--r-md);padding:11px 22px;font-size:15px;font-weight:600;
  cursor:pointer;transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease;
  box-shadow:0 6px 18px rgba(14,124,134,.22);
}
.btn-main:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:scale(1.02);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand);border:1px solid var(--brand);
  border-radius:var(--r-md);padding:11px 22px;font-size:15px;font-weight:600;
  cursor:pointer;transition:background-color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand-700);transform:scale(1.02);}
.btn-amber{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--amber);color:var(--ink);border:1px solid var(--amber);
  border-radius:var(--r-pill);padding:12px 26px;font-size:15px;font-weight:700;
  cursor:pointer;transition:transform .2s ease,filter .2s ease;
}
.btn-amber:hover{color:var(--ink);filter:brightness(1.06);transform:scale(1.02);}
.nav-cta{margin-left:8px;flex:0 0 auto;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:17px;
  align-items:center;justify-content:center;
}
.mobile-drawer{
  max-height:0;overflow:hidden;display:flex;flex-direction:column;gap:4px;
  transition:max-height .35s ease;
}
.mobile-drawer.open{max-height:460px;padding-bottom:20px;}

/* ---------- 文章页头 ---------- */
.post-hero{
  position:relative;color:#fff;overflow:hidden;
  background:#16323A url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:52px 0 62px;
}
.post-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(22,50,58,.90),rgba(22,50,58,.96));
}
.post-hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:var(--amber);text-decoration:underline;}
.crumb span.sep{opacity:.5;}
.post-badge{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--amber-soft);color:var(--amber);
  border:1px solid rgba(242,169,59,.42);
  border-radius:var(--r-pill);padding:5px 14px;font-size:12.5px;font-weight:600;letter-spacing:.4px;
}
.post-title{
  color:#fff;font-size:40px;line-height:1.28;font-weight:700;
  margin:20px 0 22px;max-width:900px;letter-spacing:.2px;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:rgba(255,255,255,.78);}
.post-meta i{color:var(--amber);margin-right:6px;}
.read-track{
  margin-top:26px;max-width:520px;height:5px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);overflow:hidden;
}
.read-track span{display:block;height:100%;width:42%;border-radius:var(--r-pill);background:var(--amber);}

/* ---------- 正文 ---------- */
.article-main{padding:64px 0 0;}
.article-shell{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--sh-1);padding:46px 48px 52px;max-width:900px;margin:0 auto;
}
.article-body{font-size:17px;line-height:1.9;color:var(--body);max-width:820px;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:26px;line-height:1.45;color:var(--ink);font-weight:700;
  margin:2em 0 .8em;padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:20px;line-height:1.5;color:var(--ink);font-weight:600;margin:1.6em 0 .6em;}
.article-body h4{font-size:17.5px;color:var(--ink);font-weight:600;margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em;}
.article-body li{margin:.45em 0;}
.article-body img{border-radius:14px;margin:1.4em 0;box-shadow:var(--sh-1);}
.article-body blockquote{
  margin:1.4em 0;padding:16px 22px;background:var(--soft);
  border-left:4px solid var(--amber);border-radius:12px;color:var(--ink);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body code{
  background:var(--soft);color:var(--brand-700);
  padding:2px 7px;border-radius:6px;font-size:.92em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:#0F2A31;color:#D8E9EB;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14.5px;line-height:1.75;margin:1.4em 0;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--soft);color:var(--ink);font-weight:600;}
.article-body a{border-bottom:1px solid rgba(14,124,134,.35);}
.article-body a:hover{border-bottom-color:var(--brand-700);}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:2.2em 0;}
.article-panel{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin-top:38px;padding-top:26px;border-top:1px solid var(--line);
}
.article-panel .hint{font-size:14px;color:var(--muted);}
.empty-state{
  text-align:center;padding:56px 20px;border-radius:var(--r-lg);background:var(--soft);
}
.empty-state i{font-size:38px;color:var(--brand);}
.empty-state h3{margin:16px 0 8px;font-size:20px;}
.empty-state p{color:var(--muted);margin-bottom:22px;}

/* ---------- 相关推荐 ---------- */
.related-section{padding:72px 0 0;}
.sec-title{font-size:28px;line-height:1.4;padding-left:14px;border-left:4px solid var(--brand);margin-bottom:10px;}
.sec-desc{color:var(--muted);font-size:15px;margin-bottom:32px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;color:inherit;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:inherit;}
.related-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--soft);}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.related-card:hover .thumb img{transform:scale(1.05);}
.related-card .tag{
  position:absolute;left:12px;top:12px;background:rgba(22,50,58,.82);color:#fff;
  font-size:12px;font-weight:600;padding:4px 11px;border-radius:var(--r-pill);letter-spacing:.3px;
}
.related-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1;}
.related-card h3{font-size:17px;line-height:1.55;font-weight:600;margin-bottom:8px;}
.related-card p{font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:14px;flex:1;}
.related-card .go{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.back-row{margin-top:32px;display:flex;justify-content:center;}

/* ---------- CTA 条 ---------- */
.cta-bar{margin:80px 0 0;background:var(--ink);color:#fff;border-radius:22px;overflow:hidden;position:relative;}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:22px;padding:38px 42px;
}
.cta-inner h2{color:#fff;font-size:25px;line-height:1.4;margin-bottom:8px;border:0;padding:0;}
.cta-inner p{color:rgba(255,255,255,.76);font-size:15px;margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:80px;padding:66px 0 0;}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-size:17px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.4px;}
.footer-list,.footer-contact{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:12px;}
.footer-list a{color:rgba(255,255,255,.7);font-size:14px;}
.footer-list a:hover{color:var(--amber);}
.footer-contact li{font-size:14px;line-height:1.8;margin-bottom:12px;color:rgba(255,255,255,.7);}
.footer-contact i{color:var(--amber);margin-right:8px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  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 -2px 14px rgba(22,50,58,.08);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
}
.mobile-tabbar ul{display:flex;list-style:none;margin:0;padding:0;}
.mobile-tabbar li{flex:1;}
.mobile-tabbar a{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:11.5px;color:var(--muted);padding:6px 2px;border-radius:10px;
}
.mobile-tabbar a i{font-size:17px;}
.mobile-tabbar a.active{color:var(--brand);background:var(--brand-tint);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .related-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .nav-desktop{display:none;}
  .nav-cta{display:none !important;}
  .nav-toggle{display:flex;}
  .post-title{font-size:33px;}
  .article-shell{padding:36px 28px 42px;}
  .cta-inner{padding:32px 28px;}
}
@media (max-width:767px){
  body{font-size:16.5px;padding-bottom:74px;}
  .container{padding-left:16px;padding-right:16px;}
  .post-hero{padding:36px 0 46px;}
  .post-title{font-size:28px;line-height:1.34;}
  .article-main{padding-top:40px;}
  .article-shell{padding:26px 18px 32px;border-radius:16px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .related-section{padding-top:48px;}
  .related-grid{grid-template-columns:1fr;}
  .sec-title{font-size:23px;}
  .cta-bar{margin-top:52px;border-radius:18px;}
  .cta-inner{padding:28px 20px;flex-direction:column;align-items:flex-start;}
  .btn-main,.btn-ghost,.btn-amber{width:100%;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .mobile-tabbar{display:block;}
  .site-footer{margin-top:52px;}
}
@media (max-width:520px){
  .brand-text{font-size:14.5px;}
  .brand-sub{display:none;}
  .post-title{font-size:24px;}
  .read-track{max-width:100%;}
}

/* roulang page: category1 */
:root{
  --primary:#0E7C86;
  --primary-deep:#0A5F67;
  --accent:#F2A93B;
  --ink:#16323A;
  --ink-2:#1E3F49;
  --body:#3A4A50;
  --muted:#7A8B90;
  --bg:#F6F9FA;
  --soft:#EDF4F5;
  --white:#FFFFFF;
  --line:rgba(22,50,58,.10);
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-card:0 2px 12px rgba(22,50,58,.06);
  --sh-hover:0 8px 24px rgba(22,50,58,.12);
  --sh-nav:0 2px 16px rgba(22,50,58,.08);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
button{font-family:inherit}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%}
.section{padding:80px 0}
.section.soft{background:var(--soft)}
.section-head{max-width:780px;margin-bottom:42px}
.section-head h2{
  position:relative;
  padding-left:18px;
  font-size:28px;
  line-height:1.36;
  letter-spacing:.2px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:7px;bottom:7px;
  width:4px;border-radius:4px;
  background:var(--primary);
}
.section-head p{margin:12px 0 0;color:var(--muted);font-size:16px;line-height:1.8}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-nav)}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:76px;
  transition:min-height .25s ease;
}
.site-header.scrolled .nav-inner{min-height:66px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand:hover{text-decoration:none}
.brand-mark{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#fff;
  display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(14,124,134,.30);
}
.brand-text{
  display:flex;flex-direction:column;
  font-size:17px;font-weight:700;color:var(--ink);
  line-height:1.25;white-space:nowrap;
}
.brand-sub{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.2px}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link-custom{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--body);
  white-space:nowrap;
}
.nav-link-custom:hover{background:rgba(14,124,134,.08);color:var(--primary);text-decoration:none}
.nav-link-custom.active{
  background:rgba(14,124,134,.12);
  color:var(--primary);
  font-weight:700;
}
.nav-link-custom.active::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  border-radius:2px;background:var(--primary);
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  border:none;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;
  font-size:15px;font-weight:600;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease;
  box-shadow:0 6px 18px rgba(14,124,134,.24);
  white-space:nowrap;
}
.btn-main:hover{background:var(--primary-deep);color:#fff;text-decoration:none;transform:translateY(-1px) scale(1.02)}
.btn-main:focus-visible{outline:3px solid rgba(14,124,134,.35);outline-offset:2px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);
  background:#fff;border:1.5px solid var(--primary);
  color:var(--primary);font-size:15px;font-weight:600;
  transition:background-color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:rgba(14,124,134,.08);text-decoration:none;transform:translateY(-1px)}
.btn-ghost:focus-visible{outline:3px solid rgba(14,124,134,.35);outline-offset:2px}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:var(--r-pill);
  background:var(--accent);color:var(--ink);
  font-size:15px;font-weight:700;border:none;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease;
  box-shadow:0 8px 20px rgba(242,169,59,.34);
}
.btn-accent:hover{background:#e69a26;color:var(--ink);text-decoration:none;transform:translateY(-1px) scale(1.02)}
.btn-accent:focus-visible{outline:3px solid rgba(242,169,59,.5);outline-offset:2px}
.nav-cta{margin-left:4px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  margin-left:auto;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;color:var(--ink);
  font-size:18px;cursor:pointer;
}
.nav-toggle:hover{background:var(--soft)}
.mobile-drawer{display:none;flex-direction:column;gap:6px;padding:6px 0 20px}
.mobile-drawer .nav-link-custom{padding:12px 14px;border-radius:12px}

/* ---------- 页头带 ---------- */
.page-hero{
  position:relative;
  padding:74px 0 70px;
  background:var(--ink);
  color:#fff;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(112deg,rgba(10,32,38,.95) 0%,rgba(10,32,38,.86) 46%,rgba(14,124,134,.62) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.page-hero .container{position:relative;z-index:2}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.70);
  margin-bottom:20px;
}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:#fff;text-decoration:none}
.crumb i{font-size:10px;opacity:.7}
.page-hero h1{
  font-size:40px;line-height:1.28;color:#fff;
  font-weight:700;letter-spacing:.3px;max-width:900px;
}
.hero-sub{
  margin:18px 0 0;
  font-size:17px;line-height:1.8;
  color:rgba(255,255,255,.82);
  max-width:720px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.20);
  font-size:13px;color:#EAF6F7;
}
.hero-tag i{color:var(--accent);font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-actions .btn-ghost{background:transparent;border-color:rgba(255,255,255,.44);color:#fff}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 图文交错 ---------- */
.journal-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:52px;
  align-items:center;
}
.journal-row + .journal-row{margin-top:64px}
.journal-row.reverse .journal-text{order:2}
.journal-media{
  border-radius:var(--r-img);
  overflow:hidden;
  box-shadow:var(--sh-card);
  background:var(--soft);
  aspect-ratio:16 / 11;
  position:relative;
}
.journal-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.journal-media:hover img{transform:scale(1.04)}
.journal-media .media-badge{
  position:absolute;left:16px;top:16px;
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(22,50,58,.82);
  color:#fff;font-size:12px;backdrop-filter:blur(4px);
}
.journal-media .media-badge i{color:var(--accent);font-size:11px}
.journal-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1px;
  color:var(--primary);margin-bottom:12px;
}
.journal-kicker span{
  display:inline-block;width:22px;height:2px;border-radius:2px;background:var(--accent);
}
.journal-text h3{font-size:23px;line-height:1.45;margin-bottom:14px}
.journal-text p{font-size:16.5px;line-height:1.9;color:var(--body)}
.journal-points{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
.journal-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15.5px;color:var(--body);
}
.journal-points i{color:var(--primary);margin-top:8px;font-size:12px}

/* ---------- 要点清单 + 属性面板 ---------- */
.split-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:44px;
  align-items:start;
}
.point-list{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.point-item{
  display:flex;align-items:flex-start;gap:18px;
  padding:20px 22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.point-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(14,124,134,.28)}
.point-num{
  flex:0 0 auto;
  font-size:20px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;
  line-height:1.4;
}
.point-body h4{font-size:17px;font-weight:600;margin-bottom:4px}
.point-body p{margin:0;font-size:15px;line-height:1.75;color:var(--muted)}
.fact-panel{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-2) 100%);
  border-radius:var(--r-card);
  padding:28px 26px;
  color:#C9DEE2;
  box-shadow:0 16px 40px rgba(22,50,58,.22);
}
.fact-panel h3{color:#fff;font-size:19px;margin-bottom:6px}
.fact-panel .fact-note{font-size:13.5px;color:#8FB0B5;margin-bottom:16px}
.fact-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 0;
  border-bottom:1px dashed rgba(255,255,255,.14);
  font-size:15px;
}
.fact-row:last-of-type{border-bottom:none}
.fact-row .fact-key{color:#9FBDC2}
.fact-row .fact-val{color:#fff;font-weight:600}
.fact-row .fact-val.ok{color:var(--accent)}

/* ---------- 步骤条 ---------- */
.step-line{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.step-card{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px 24px;
  box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.step-card::after{
  content:"";
  position:absolute;right:-14px;top:44px;
  width:8px;height:8px;border-radius:50%;
  background:rgba(14,124,134,.35);
}
.step-card:last-child::after{display:none}
.step-num{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(14,124,134,.12);
  color:var(--primary);
  font-weight:800;font-size:16px;
  margin-bottom:14px;
}
.step-card h4{font-size:17px;font-weight:600;margin-bottom:8px}
.step-card p{margin:0;font-size:14.5px;line-height:1.75;color:var(--muted)}

/* ---------- 更新记录 ---------- */
.update-wrap{
  display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start;
}
.update-list{position:relative;padding-left:30px;margin:0;list-style:none}
.update-list::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;
  width:2px;background:rgba(14,124,134,.22);
}
.update-item{position:relative;padding-bottom:26px}
.update-item:last-child{padding-bottom:0}
.update-item::before{
  content:"";position:absolute;left:-26px;top:9px;
  width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);
}
.update-item time{
  display:block;font-size:13px;font-weight:700;
  letter-spacing:.6px;color:var(--muted);margin-bottom:4px;
}
.update-item h4{font-size:17px;font-weight:600;margin-bottom:6px}
.update-item p{margin:0;font-size:15px;line-height:1.8;color:var(--body)}
.tip-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px;
  box-shadow:var(--sh-card);
}
.tip-card h4{font-size:18px;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.tip-card h4 i{color:var(--accent)}
.tip-card ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.tip-card li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--body)}
.tip-card li i{color:var(--primary);margin-top:8px;font-size:11px}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(14,124,134,.30);box-shadow:var(--sh-hover)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  position:relative;
  padding:20px 58px 20px 22px;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  position:absolute;right:22px;top:50%;
  transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--primary);
  transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"–";transform:translateY(-50%) rotate(180deg)}
.faq-item summary:hover{color:var(--primary)}
.faq-body{
  background:var(--soft);
  border-top:1px solid var(--line);
  padding:18px 22px 20px;
  font-size:16px;line-height:1.9;color:var(--body);
}

/* ---------- 尾区 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-deep) 100%);
  border-radius:20px;
  padding:46px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  color:#fff;
  box-shadow:0 18px 44px rgba(14,124,134,.26);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;right:-60px;top:-60px;
  width:240px;height:240px;border-radius:50%;
  background:rgba(255,255,255,.07);
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{color:#fff;font-size:27px;line-height:1.4;margin-bottom:10px;padding:0}
.cta-copy p{margin:0;color:rgba(255,255,255,.86);font-size:16px}
.cta-band .btn-accent{position:relative;z-index:2}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#AFC7CC;
  padding:68px 0 0;
  margin-top:0;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand b{color:#fff;font-size:17px;font-weight:700}
.footer-about{font-size:14.5px;line-height:1.85;color:#93AEB3;margin:0}
.site-footer h4{
  color:#fff;font-size:15px;font-weight:600;
  letter-spacing:.4px;margin-bottom:18px;
}
.footer-list,.footer-contact{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.footer-list a{color:#AFC7CC;font-size:14.5px}
.footer-list a:hover{color:var(--accent);text-decoration:none}
.footer-contact li{
  font-size:14.5px;color:#93AEB3;
  display:flex;gap:10px;align-items:flex-start;line-height:1.7;
}
.footer-contact i{color:var(--accent);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:52px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;
  display:flex;justify-content:space-between;align-items:center;
  gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8099A0;
}

/* ---------- 底部 Tab ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;
  z-index:1040;
  background:rgba(255,255,255,.98);
  border-top:1px solid var(--line);
  box-shadow:0 -2px 16px rgba(22,50,58,.08);
  grid-template-columns:repeat(4,1fr);
  padding:6px 0 8px;
}
.tab-item{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:11px;color:var(--muted);padding:4px 0;
}
.tab-item i{font-size:17px}
.tab-item:hover{color:var(--primary);text-decoration:none}
.tab-item.active{color:var(--primary);font-weight:700}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .page-hero h1{font-size:34px}
  .journal-row{gap:40px}
}
@media (max-width:991.98px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-drawer.open{display:flex}
  .section{padding:64px 0}
  .page-hero{padding:56px 0 52px}
  .page-hero h1{font-size:31px;line-height:1.34}
  .journal-row{grid-template-columns:1fr;gap:26px}
  .journal-row.reverse .journal-text{order:0}
  .split-grid{grid-template-columns:1fr;gap:30px}
  .update-wrap{grid-template-columns:1fr;gap:32px}
  .step-line{grid-template-columns:repeat(2,1fr)}
  .step-card::after{display:none}
  .cta-band{padding:38px 30px}
}
@media (max-width:767.98px){
  body{padding-bottom:76px}
  .mobile-tabbar{display:grid}
  .container{padding-left:16px;padding-right:16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:30px}
  .section-head h2{font-size:23px}
  .page-hero{padding:42px 0 40px}
  .page-hero h1{font-size:27px;line-height:1.36}
  .hero-sub{font-size:15.5px}
  .hero-actions{flex-direction:column;gap:10px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .brand-text{font-size:15px;white-space:normal}
  .brand-sub{display:none}
  .journal-text h3{font-size:20px}
  .step-line{grid-template-columns:1fr}
  .ptoint-list{gap:12px}
  .point-item{padding:17px 18px;gap:14px}
  .cta-band{padding:32px 22px;border-radius:16px}
  .cta-copy h2{font-size:22px}
  .cta-band .btn-accent{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:519.98px){
  .page-hero h1{font-size:24px}
  .brand-mark{width:38px;height:38px;font-size:13px}
  .fact-panel{padding:22px 18px}
  .faq-item summary{font-size:16px;padding:17px 50px 17px 18px}
}

/* roulang page: category2 */
:root{
  --main:#0E7C86;
  --main-dark:#0A5F67;
  --main-soft:rgba(14,124,134,.12);
  --amber:#F2A93B;
  --amber-dark:#D98F1F;
  --ink:#16323A;
  --body:#3A4A50;
  --muted:#7A8B90;
  --bg:#F6F9FA;
  --card:#FFFFFF;
  --soft:#EDF4F5;
  --border:#DCE7E9;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-input:10px;
  --shadow-card:0 2px 12px rgba(22,50,58,.06);
  --shadow-card-hover:0 8px 24px rgba(22,50,58,.12);
  --shadow-nav:0 2px 16px rgba(22,50,58,.08);
  --sec-gap:80px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--body);
  font-size:17px;
  line-height:1.9;
  padding-bottom:0;
}
img{max-width:100%;display:block;}
a{color:var(--main);text-decoration:none;transition:color .2s ease,background .2s ease;}
a:hover{color:var(--main-dark);text-decoration:underline;}
button{font-family:inherit;}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;margin:0;}
h1{font-size:40px;line-height:1.25;letter-spacing:-.5px;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  transition:padding .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-nav);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:16px 0;transition:padding .25s ease;
}
.site-header.scrolled .nav-inner{padding:9px 0;}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 42px;
  background:var(--main);color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(14,124,134,.28);
  letter-spacing:.5px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);line-height:1.2;display:flex;flex-direction:column;}
.brand-sub{font-size:12px;font-weight:400;color:var(--muted);margin-top:3px;letter-spacing:.2px;}
.nav-desktop{display:flex;align-items:center;gap:6px;}
.nav-link-custom{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--body);text-decoration:none;
  transition:background .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-link-custom:hover{background:var(--soft);color:var(--main);text-decoration:none;}
.nav-link-custom.active{background:var(--main-soft);color:var(--main);font-weight:600;}
.nav-link-custom.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;background:var(--main);
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--main);color:#fff;border:none;
  padding:11px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  box-shadow:0 4px 14px rgba(14,124,134,.24);
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
  cursor:pointer;text-decoration:none;
}
.btn-main:hover{background:var(--main-dark);color:#fff;transform:scale(1.02);text-decoration:none;box-shadow:0 8px 20px rgba(14,124,134,.3);}
.btn-main:focus-visible{outline:3px solid rgba(14,124,134,.4);outline-offset:2px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--main);border:1.5px solid var(--main);
  padding:10px 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:background .2s ease,transform .2s ease;cursor:pointer;text-decoration:none;
}
.btn-ghost:hover{background:rgba(14,124,134,.08);color:var(--main-dark);transform:scale(1.02);text-decoration:none;}
.btn-ghost:focus-visible{outline:3px solid rgba(14,124,134,.4);outline-offset:2px;}
.btn-amber{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--amber);color:var(--ink);border:none;
  padding:13px 30px;border-radius:999px;
  font-size:16px;font-weight:700;line-height:1.2;
  box-shadow:0 6px 18px rgba(242,169,59,.3);
  transition:transform .2s ease,background .2s ease;cursor:pointer;text-decoration:none;
}
.btn-amber:hover{background:#FFB94D;color:var(--ink);transform:scale(1.02);text-decoration:none;}
.btn-amber:focus-visible{outline:3px solid rgba(242,169,59,.5);outline-offset:2px;}
.nav-cta{padding:10px 20px;}
.nav-toggle{
  display:none;background:#fff;border:1px solid var(--border);color:var(--ink);
  width:42px;height:42px;border-radius:12px;font-size:17px;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:focus-visible{outline:3px solid rgba(14,124,134,.35);outline-offset:2px;}
.mobile-drawer{
  display:none;flex-direction:column;gap:4px;
  padding:10px 0 18px;border-top:1px solid var(--border);margin-top:12px;
}
.mobile-drawer.open{display:flex;}
.mobile-drawer .nav-link-custom{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--soft);border-bottom:1px solid var(--border);}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:14px;color:var(--muted);}
.crumb-list a{color:var(--muted);font-weight:500;}
.crumb-list a:hover{color:var(--main);text-decoration:none;}
.crumb-list .sep{color:#B9C8CB;font-size:11px;}
.crumb-list .current{color:var(--main);font-weight:600;}

/* ---------- 页头带 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#E6F1F2 0%,var(--bg) 100%);
  padding:64px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:auto -8% -60% auto;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(14,124,134,.12),rgba(14,124,134,0) 68%);
  pointer-events:none;
}
.page-hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:7px 16px;font-size:13px;font-weight:600;color:var(--main);
  box-shadow:var(--shadow-card);margin-bottom:20px;
}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--amber);}
.page-hero h1{font-size:38px;margin-bottom:16px;}
.page-hero h1 .hl{color:var(--main);}
.page-hero .lede{font-size:18px;color:var(--body);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-art{
  position:relative;border-radius:20px;overflow:hidden;
  aspect-ratio:4/3;box-shadow:0 18px 40px rgba(22,50,58,.16);
  background:var(--soft);
}
.hero-art img{width:100%;height:100%;object-fit:cover;}
.hero-art .art-badge{
  position:absolute;left:16px;top:16px;
  background:rgba(22,50,58,.82);color:#fff;border-radius:999px;
  padding:6px 14px;font-size:12px;font-weight:600;letter-spacing:.4px;
  display:inline-flex;align-items:center;gap:7px;
}
.hero-art .art-badge .pulse{width:7px;height:7px;border-radius:50%;background:#5FD3A0;box-shadow:0 0 0 4px rgba(95,211,160,.22);}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:34px;max-width:560px;
}
.hero-stats .stat{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:16px 18px;box-shadow:var(--shadow-card);
}
.hero-stats .num{font-size:24px;font-weight:700;color:var(--main);line-height:1.2;}
.hero-stats .lbl{font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-gap) 0;}
.section.tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-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:700;letter-spacing:1.2px;
  color:var(--main);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--amber);}
.section-head h2{margin-bottom:14px;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--main);
}
.section-head.center h2{padding-left:0;}
.section-head.center h2::before{display:none;}
.section-head p{color:var(--body);margin-bottom:0;}

/* ---------- 准备卡组 ---------- */
.kit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.kit-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 22px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  height:100%;
}
.kit-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:#C9DCDE;}
.kit-icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--soft);color:var(--main);font-size:19px;margin-bottom:16px;
}
.kit-card h3{font-size:18px;margin-bottom:10px;}
.kit-card p{font-size:15px;color:var(--body);margin-bottom:0;line-height:1.8;}
.kit-card .tagline{display:inline-block;margin-top:14px;font-size:12px;font-weight:600;color:var(--amber-dark);background:rgba(242,169,59,.14);border-radius:999px;padding:4px 12px;}

/* ---------- 步骤条 ---------- */
.steps-wrap{background:var(--soft);border-radius:24px;padding:44px 36px;border:1px solid var(--border);}
.step-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.step-item{position:relative;background:#fff;border-radius:var(--radius-card);padding:26px 22px 24px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease;}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);}
.step-no{
  font-size:13px;font-weight:700;color:var(--amber-dark);letter-spacing:1px;
  display:inline-block;margin-bottom:10px;
}
.step-item h3{font-size:17px;margin-bottom:10px;}
.step-item p{font-size:15px;margin-bottom:0;color:var(--body);line-height:1.8;}
.step-item .step-line{
  position:absolute;top:44px;right:-14px;width:28px;height:2px;background:#C9DCDE;
}
.step-item:last-child .step-line{display:none;}

/* ---------- 深色属性面板 ---------- */
.dark-panel{
  background:var(--ink);border-radius:24px;padding:48px 40px;color:#CFE0E3;
  position:relative;overflow:hidden;
}
.dark-panel::after{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,124,134,.35),rgba(14,124,134,0) 70%);
}
.dark-panel h2{color:#fff;padding-left:16px;position:relative;margin-bottom:16px;font-size:26px;}
.dark-panel h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--amber);}
.dark-panel .panel-lede{color:#A9C1C5;max-width:640px;font-size:16px;margin-bottom:34px;}
.panel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative;z-index:1;}
.panel-item{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-card);padding:22px 20px;
  transition:background .25s ease,border-color .25s ease,transform .25s ease;
}
.panel-item:hover{background:rgba(255,255,255,.09);border-color:rgba(242,169,59,.4);transform:translateY(-2px);}
.panel-item .pi-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.panel-item .pi-head i{color:var(--amber);font-size:16px;}
.panel-item h3{color:#fff;font-size:17px;margin:0;}
.panel-item p{font-size:14px;line-height:1.8;color:#A9C1C5;margin:0;}
.panel-meta{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;position:relative;z-index:1;
}
.panel-meta span{
  font-size:13px;color:#CFE0E3;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:7px 16px;
}

/* ---------- 场景分组 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.scene-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;height:100%;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);}
.scene-card .thumb{position:relative;aspect-ratio:16/9;background:var(--soft);overflow:hidden;}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.scene-card:hover .thumb img{transform:scale(1.05);}
.scene-card .thumb .badge-soft{
  position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);
  color:var(--main);font-size:12px;font-weight:700;border-radius:999px;padding:5px 12px;
}
.scene-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.scene-body h3{font-size:18px;margin-bottom:10px;}
.scene-body p{font-size:15px;color:var(--body);line-height:1.8;margin-bottom:16px;}
.scene-body .scene-foot{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--main);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--border);}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-33px;top:6px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--main);
}
.tl-item .tl-time{font-size:13px;font-weight:700;color:var(--amber-dark);letter-spacing:.6px;margin-bottom:6px;}
.tl-item h3{font-size:18px;margin-bottom:8px;}
.tl-item p{font-size:15px;margin-bottom:0;color:var(--body);}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item:hover{box-shadow:var(--shadow-card-hover);border-color:#C9DCDE;}
.faq-q{
  width:100%;background:none;border:none;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-q:focus-visible{outline:3px solid rgba(14,124,134,.35);outline-offset:-3px;}
.faq-q .plus{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:var(--soft);color:var(--main);font-size:13px;
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item.open .faq-q .plus{transform:rotate(45deg);background:var(--main);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.open .faq-a{max-height:420px;}
.faq-a-inner{
  padding:0 22px 22px;font-size:15.5px;line-height:1.9;color:var(--body);
  background:var(--soft);border-radius:14px;margin:0 12px 12px;padding-top:18px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#0E7C86 0%,#126C77 55%,#16323A 100%);
  border-radius:24px;padding:46px 44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 18px 40px rgba(14,124,134,.22);
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.85);margin-bottom:0;font-size:16px;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#A9C1C5;padding:64px 0 0;margin-top:var(--sec-gap);}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:11px;font-size:15px;background:var(--main);}
.footer-brand b{color:#fff;font-size:16px;}
.footer-about{font-size:14.5px;line-height:1.9;color:#93AAB0;margin-bottom:0;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-list li{margin-bottom:12px;}
.footer-list a{color:#A9C1C5;font-size:14.5px;}
.footer-list a:hover{color:var(--amber);text-decoration:none;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14.5px;margin-bottom:14px;color:#A9C1C5;}
.footer-contact i{color:var(--amber);width:16px;text-align:center;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#82979C;
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--border);
  box-shadow:0 -4px 16px rgba(22,50,58,.07);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
.tabbar-inner{display:flex;justify-content:space-around;align-items:center;}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;
  font-size:11.5px;color:var(--muted);padding:5px 2px;border-radius:10px;
  text-decoration:none;transition:color .2s ease,background .2s ease;
}
.tab-item i{font-size:17px;}
.tab-item:hover{color:var(--main);text-decoration:none;}
.tab-item.active{color:var(--main);font-weight:700;background:var(--main-soft);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .kit-grid{grid-template-columns:repeat(2,1fr);}
  .step-rail{grid-template-columns:repeat(2,1fr);}
  .step-item .step-line{display:none;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  h1{font-size:32px;}
  .page-hero h1{font-size:30px;}
  .page-hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-art{max-width:520px;}
  .panel-grid{grid-template-columns:1fr 1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .nav-desktop{display:none;}
  .nav-cta{display:none !important;}
  .nav-toggle{display:inline-flex;}
  .footer-brand{margin-top:8px;}
}
@media (max-width:767.98px){
  :root{--sec-gap:48px;}
  body{padding-bottom:78px;}
  .container{padding-left:16px;padding-right:16px;}
  h1{font-size:28px;line-height:1.34;}
  h2{font-size:23px;}
  .page-hero{padding:42px 0 48px;}
  .page-hero .lede{font-size:16.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .hero-stats{grid-template-columns:1fr;max-width:100%;}
  .hero-stats .stat{padding:14px 16px;}
  .kit-grid{grid-template-columns:1fr;}
  .steps-wrap{padding:28px 18px;border-radius:18px;}
  .step-rail{grid-template-columns:1fr;}
  .dark-panel{padding:32px 20px;border-radius:18px;}
  .dark-panel h2{font-size:22px;}
  .panel-grid{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .timeline{padding-left:28px;}
  .tl-item::before{left:-27px;width:18px;height:18px;}
  .faq-q{font-size:16px;padding:17px 16px;}
  .faq-a-inner{margin:0 8px 10px;padding:16px 16px 18px;font-size:15px;}
  .cta-band{padding:30px 20px;border-radius:18px;}
  .cta-band h2{font-size:21px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .mobile-tabbar{display:block;}
}
@media (max-width:519.98px){
  .brand-sub{display:none;}
  .brand-text{font-size:15.5px;}
  .page-hero h1{font-size:25px;}
  .btn-main,.btn-ghost,.btn-amber{padding:12px 18px;}
}