/* roulang page: index */
:root{
  --color-primary:#1E6157;
  --color-primary-dark:#123F38;
  --color-primary-light:#3C8479;
  --color-primary-pale:#E8F0ED;
  --color-accent:#C4743C;
  --color-accent-dark:#A85E2C;
  --color-accent-pale:#F7E9DD;
  --color-bg:#F8F6F1;
  --color-bg-alt:#EFEBE2;
  --color-card:#FFFFFF;
  --color-deep:#10312C;
  --color-ink:#16201E;
  --color-ink-soft:#5A6663;
  --color-ink-mute:#8A9490;
  --color-line:#E3DED3;
  --color-divider:#D8D2C6;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-card:0 1px 2px rgba(18,63,56,.06);
  --shadow-hover:0 10px 24px rgba(18,63,56,.10);
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'Inter','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--color-ink);
  background-color:var(--color-bg);
}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;line-height:1.3;margin:0;color:var(--color-ink)}
h1{font-size:clamp(30px,4.2vw,44px);line-height:1.28}
h2{font-size:clamp(23px,2.7vw,31px)}
h3{font-size:clamp(18px,2vw,21px)}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--color-primary-pale);color:var(--color-primary-dark)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--color-bg-alt)}
::-webkit-scrollbar-thumb{background:#C3CFC9;border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:var(--color-primary-light)}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.container-narrow{width:100%;max-width:960px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:88px 0}
.section-alt{background:var(--color-bg-alt)}
.section-white{background:var(--color-card)}
@media (max-width:768px){.section{padding:52px 0}}

.title-line{display:flex;align-items:center;gap:12px}
.title-line::before{content:"";width:4px;height:1.05em;background:var(--color-primary);border-radius:2px;flex:none}
.eyebrow{font-family:var(--font-serif);font-size:14px;letter-spacing:.12em;color:var(--color-primary);margin-bottom:12px}
.lead{color:var(--color-ink-soft);font-size:16.5px;max-width:720px}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:var(--color-bg);border-bottom:1px solid var(--color-line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(18,63,56,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;padding:8px 0}
.brand svg{width:34px;height:34px;flex:none}
.brand-text{font-family:var(--font-serif);font-weight:700;font-size:18px;letter-spacing:.01em;color:var(--color-primary-dark);white-space:nowrap}
@media (max-width:400px){.brand-text{font-size:16px}}
.nav-desktop{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;display:inline-block;font-size:15px;color:var(--color-ink-soft);padding:10px 0;white-space:nowrap;transition:color .18s ease}
.nav-link::after{content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);width:0;height:2px;background:var(--color-primary);border-radius:2px;transition:width .18s ease}
.nav-link:hover,.nav-link.is-active{color:var(--color-primary)}
.nav-link:hover::after,.nav-link.is-active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:14px}
@media (max-width:1200px){.nav-desktop{gap:20px}.nav-link{font-size:14.5px}}
@media (max-width:940px){.nav-desktop{gap:14px}.nav-link{font-size:14px}}
@media (max-width:768px){.nav-desktop{display:none}}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--color-line);border-radius:var(--radius-btn);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;transition:border-color .18s,box-shadow .18s}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--color-primary-dark);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.menu-toggle:hover{border-color:var(--color-primary);box-shadow:var(--shadow-card)}
@media (max-width:768px){.menu-toggle{display:flex}.header-actions .btn-sm{display:none}}
.btn-sm{min-height:40px;padding:0 18px;font-size:14.5px}

/* drawer */
.mobile-drawer{position:fixed;inset:0;z-index:90;background:var(--color-bg);display:flex;flex-direction:column;transform:translateY(-100%);transition:transform .28s ease;visibility:hidden}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--color-line)}
.drawer-close{width:44px;height:44px;border:1px solid var(--color-line);background:#fff;border-radius:var(--radius-btn);cursor:pointer;font-size:20px;color:var(--color-primary-dark);line-height:1}
.drawer-nav{padding:8px 20px;overflow-y:auto;flex:1}
.drawer-link{min-height:52px;display:flex;align-items:center;justify-content:space-between;font-size:17px;color:var(--color-ink);border-bottom:1px solid var(--color-line);transition:color .18s,padding-left .18s}
.drawer-link:hover,.drawer-link.is-active{color:var(--color-primary);padding-left:6px}
.drawer-link small{color:var(--color-ink-mute);font-size:13px}
.drawer-foot{padding:20px;border-top:1px solid var(--color-line)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--radius-btn);border:1.5px solid transparent;font-size:15px;font-weight:600;line-height:1;cursor:pointer;transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out}
.btn-primary{background:var(--color-accent);color:#fff;box-shadow:0 2px 6px rgba(196,116,60,.22)}
.btn-primary:hover{background:var(--color-accent-dark);transform:translateY(-1px);box-shadow:0 8px 18px rgba(196,116,60,.26)}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 3px rgba(196,116,60,.24)}
.btn-ghost{background:transparent;border-color:var(--color-primary);color:var(--color-primary)}
.btn-ghost:hover{background:var(--color-primary);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-light:hover{background:#fff;color:var(--color-deep);transform:translateY(-1px)}
.btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-text{color:var(--color-primary);border-bottom:1px solid currentColor;padding-bottom:1px;font-size:15px;transition:color .18s ease}
.link-text:hover{color:var(--color-primary-dark)}

/* hero */
.hero{position:relative;overflow:hidden;padding:76px 0 88px}
.hero-deco{position:absolute;inset:0;pointer-events:none;opacity:.06;background-repeat:no-repeat;background-position:right -60px bottom -40px;background-size:680px auto}
.hero-grid{display:grid;gap:48px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:64px}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:var(--color-primary-pale);color:var(--color-primary);font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:20px}
.hero-sub{margin-top:18px;font-size:17px;color:var(--color-ink-soft);max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;padding-top:22px;border-top:1px solid var(--color-line)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--color-ink-soft)}
.hero-trust svg{width:16px;height:16px;flex:none;color:var(--color-primary)}
.hero-visual{position:relative}
.hero-visual .frame-line{position:absolute;top:-10px;right:-10px;left:10px;bottom:10px;border:1px solid var(--color-primary);border-radius:12px;pointer-events:none}
.hero-media{position:relative;border-radius:12px;overflow:hidden;background:var(--color-primary-pale);aspect-ratio:4/3}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-note{position:absolute;left:18px;bottom:18px;background:rgba(255,255,255,.94);border-radius:8px;padding:12px 16px;box-shadow:var(--shadow-card)}
.hero-note strong{display:block;font-family:var(--font-serif);font-size:15px;color:var(--color-primary-dark)}
.hero-note span{font-size:13px;color:var(--color-ink-mute)}

/* stats */
.stats-band{background:var(--color-primary-pale)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:34px 26px;border-left:1px solid rgba(30,97,87,.16)}
.stat-item:first-child{border-left:0}
.stat-num{font-family:var(--font-serif);font-size:clamp(28px,3.4vw,38px);font-weight:700;color:var(--color-primary);line-height:1.1}
.stat-num em{font-style:normal;font-size:.55em;margin-left:4px;color:var(--color-primary-light)}
.stat-label{margin-top:10px;font-size:14px;color:var(--color-ink-soft);line-height:1.6}
@media (max-width:900px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-left:0;border-top:1px solid rgba(30,97,87,.16);padding:24px 18px}
  .stat-item:nth-child(-n+2){border-top:0}
}

/* capability list */
.cap-grid{display:grid;gap:48px}
@media (min-width:1024px){.cap-grid{grid-template-columns:1.15fr .85fr;gap:64px}}
.cap-list li{display:flex;gap:20px;padding:26px 0;border-top:1px solid var(--color-line)}
.cap-list li:last-child{border-bottom:1px solid var(--color-line)}
.cap-num{font-family:var(--font-serif);font-size:15px;color:var(--color-primary);letter-spacing:.08em;flex:none;padding-top:5px}
.cap-title{font-family:var(--font-serif);font-size:19px;font-weight:700;margin-bottom:6px}
.cap-text{font-size:15.5px;color:var(--color-ink-soft);line-height:1.85}
.cap-visual{display:flex;flex-direction:column;gap:26px}
.cap-block{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:box-shadow .2s ease,transform .2s ease}
.cap-block:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.cap-block.offset{margin-left:34px}
@media (max-width:768px){.cap-block.offset{margin-left:0}}
.cap-block img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--color-primary-pale)}
.cap-block-body{padding:20px 22px 24px}
.cap-block-body h3{font-size:18px;margin-bottom:8px}
.cap-block-body p{font-size:15px;color:var(--color-ink-soft);line-height:1.85}

/* scenario cards */
.scene-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:900px){
  .scene-grid{grid-template-columns:repeat(12,1fr)}
  .scene-a{grid-column:span 5;grid-row:span 2}
  .scene-b{grid-column:span 7}
  .scene-c{grid-column:span 7}
}
.card{position:relative;display:block;background:var(--color-card);border:1px solid var(--color-line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out}
.card::before{content:"";position:absolute;top:0;left:0;height:3px;width:0;background:var(--color-primary);transition:width .22s ease-out;z-index:3}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#D3E1DB}
.card:hover::before{width:100%}
.scene-media{background:var(--color-primary-pale);overflow:hidden}
.scene-a .scene-media{aspect-ratio:4/3}
.scene-b .scene-media,.scene-c .scene-media{aspect-ratio:16/7}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.card:hover .scene-media img{transform:scale(1.03)}
.scene-body{padding:24px 26px 28px}
.scene-body h3{margin-bottom:10px}
.scene-body p{font-size:15.5px;color:var(--color-ink-soft)}
.scene-points{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.scene-points li{position:relative;padding-left:18px;font-size:14.5px;color:var(--color-ink-soft)}
.scene-points li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--color-primary-light)}
.scene-c .scene-body{padding:22px 26px}

/* dark band */
.dark-band{position:relative;background-color:var(--color-deep);color:#fff;overflow:hidden}
.dark-band .bg-layer{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.16}
.dark-band .inner{position:relative}
.dark-band h2{color:#fff}
.dark-band .lead{color:rgba(255,255,255,.78)}
.steps{display:grid;gap:28px;margin-top:44px}
@media (min-width:900px){.steps{grid-template-columns:repeat(3,1fr);gap:0}}
.step{padding:0 0 0 0}
@media (min-width:900px){
  .step{padding:0 32px;border-left:1px solid rgba(255,255,255,.16)}
  .step:first-child{border-left:0;padding-left:0}
  .step:last-child{padding-right:0}
}
.step-num{font-family:var(--font-serif);font-size:15px;letter-spacing:.14em;color:#E9C7A8;margin-bottom:14px}
.step h3{color:#fff;font-size:19px;margin-bottom:10px}
.step p{font-size:15px;color:rgba(255,255,255,.76);line-height:1.85}
.dark-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:46px;padding-top:32px;border-top:1px solid rgba(255,255,255,.14)}

/* cms list */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:40px}
.cms-grid{display:grid;gap:26px;grid-template-columns:1fr}
@media (min-width:900px){.cms-grid{grid-template-columns:repeat(2,1fr)}}
.cms-card__link{display:block;height:100%}
.cms-card__media{position:relative;aspect-ratio:16/10;background:var(--color-primary-pale);overflow:hidden}
.cms-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.cms-card:hover .cms-card__media img{transform:scale(1.03)}
.cms-card__badge{position:absolute;top:14px;left:14px;background:rgba(232,240,237,.95);color:var(--color-primary);backdrop-filter:blur(2px)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--color-primary-pale);color:var(--color-primary);font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.cms-card__body{padding:22px 24px 24px}
.cms-card__title{font-size:19px;margin-bottom:10px;transition:color .18s ease}
.cms-card:hover .cms-card__title{color:var(--color-primary)}
.cms-card__desc{font-size:15px;color:var(--color-ink-soft);line-height:1.85;margin-bottom:16px}
.cms-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--color-line);font-size:13px;color:var(--color-ink-mute)}
.cms-card__more{color:var(--color-primary);font-size:14px;font-weight:600}
.empty-box{border:1px dashed var(--color-divider);border-radius:var(--radius-card);padding:48px 24px;text-align:center;color:var(--color-ink-soft);font-size:15px;background:#FFFFFF}
.empty-box svg{width:34px;height:34px;margin:0 auto 14px;color:var(--color-primary-light);opacity:.7}
.load-more-wrap{display:none;justify-content:center;margin-top:36px}
.load-more-wrap.is-visible{display:flex}

/* faq */
.faq-grid{display:grid;gap:44px}
@media (min-width:1024px){.faq-grid{grid-template-columns:.8fr 1.2fr;gap:64px}}
.faq-item{border-top:1px solid var(--color-line);transition:background-color .2s ease}
.faq-item:last-child{border-bottom:1px solid var(--color-line)}
.faq-item summary{list-style:none;cursor:pointer;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 18px 16px 4px;font-family:var(--font-serif);font-size:16.5px;font-weight:700;color:var(--color-ink);transition:color .18s ease}
.faq-item summary:hover{color:var(--color-primary)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--font-sans);font-size:22px;font-weight:400;color:var(--color-primary);line-height:1;flex:none;transition:transform .2s ease}
.faq-item[open]{background:#FBFAF7}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 44px 22px 4px;font-size:15.5px;color:var(--color-ink-soft);line-height:1.9}

/* form */
.contact-grid{display:grid;gap:44px}
@media (min-width:960px){.contact-grid{grid-template-columns:1.1fr .9fr;gap:56px}}
.form-label{display:block;font-size:14px;color:var(--color-ink-soft);margin-bottom:8px}
.form-control{width:100%;padding:12px 14px;border:1px solid var(--color-line);border-radius:6px;background:#fff;font-size:15px;line-height:1.7;transition:border-color .18s ease,box-shadow .18s ease}
.form-control::placeholder{color:#A8B1AE}
.form-control:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 4px rgba(30,97,87,.14)}
.form-row{margin-bottom:20px}
.form-msg{margin-top:14px;font-size:14px;color:var(--color-accent-dark)}
.contact-card{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card)}
.contact-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--color-line);font-size:15px;color:var(--color-ink-soft)}
.contact-list li:last-child{border-bottom:0}
.contact-list strong{display:block;font-family:var(--font-serif);color:var(--color-ink);font-size:15.5px}
.qr-slot{margin-top:18px;width:120px;height:120px;border:1px dashed var(--color-divider);border-radius:8px;background:var(--color-primary-pale);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--color-ink-mute);text-align:center;padding:10px}

/* footer */
.site-footer{background:var(--color-deep);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand svg{width:30px;height:30px;flex:none}
.footer-brand span{font-family:var(--font-serif);font-size:17px;font-weight:700;color:#fff}
.footer-title{font-family:var(--font-serif);font-size:16px;color:#fff;margin-bottom:18px}
.footer-link{display:inline-block;color:rgba(255,255,255,.72);font-size:14.5px;line-height:2.1;transition:color .18s ease,transform .18s ease}
.footer-link:hover{color:var(--color-accent)}
.footer-note{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66)}
.footer-bottom{margin-top:52px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.6)}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--color-accent)}

/* utils */
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.img-frame{background:var(--color-primary-pale);overflow:hidden;border-radius:10px}
.img-frame img{width:100%;height:100%;object-fit:cover}
.hero-deco{background-image:url('/assets/images/backpic/back-3.webp')}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --color-primary:#1E6157;
  --color-primary-deep:#123F38;
  --color-primary-light:#3C8479;
  --color-primary-pale:#E8F0ED;
  --color-accent:#C4743C;
  --color-accent-deep:#A85E2C;
  --color-accent-pale:#F7E9DD;
  --color-bg:#F8F6F1;
  --color-bg-alt:#EFEBE2;
  --color-card:#FFFFFF;
  --color-deep:#10312C;
  --color-ink:#16201E;
  --color-muted:#5A6663;
  --color-faint:#8A9490;
  --color-border:#E3DED3;
  --color-divider:#D8D2C6;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-card:0 1px 2px rgba(18,63,56,.06);
  --shadow-hover:0 10px 24px rgba(18,63,56,.10);
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'Inter','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(--color-bg);color:var(--color-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-serif);margin:0;line-height:1.3;color:var(--color-ink);font-weight:700}
p{margin:0 0 1.15em}
a{color:var(--color-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--color-primary-deep)}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--color-primary-pale);color:var(--color-primary-deep)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--color-bg-alt)}
::-webkit-scrollbar-thumb{background:#C9C2B2;border-radius:6px;border:2px solid var(--color-bg-alt)}
::-webkit-scrollbar-thumb:hover{background:var(--color-primary-light)}

/* ============ 容器 ============ */
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-narrow{width:100%;max-width:960px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.container-x,.container-narrow{padding:0 20px}}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,246,241,.94);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--color-border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:78px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand svg{width:36px;height:36px;flex:0 0 auto}
.brand-text{font-family:var(--font-serif);font-weight:700;font-size:17px;color:var(--color-primary-deep);letter-spacing:.4px;white-space:nowrap}
.nav-desktop{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--color-muted);padding:6px 0;white-space:nowrap;transition:color .18s ease}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--color-primary);border-radius:2px;transition:width .18s ease;
}
.nav-link:hover{color:var(--color-primary)}
.nav-link:hover::after{width:60%}
.nav-link.is-active{color:var(--color-primary);font-weight:600}
.nav-link.is-active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--color-border);border-radius:8px;
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.menu-toggle:hover{border-color:var(--color-primary);box-shadow:var(--shadow-card)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--color-primary-deep);border-radius:2px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:15px;line-height:1;
  padding:13px 22px;border:1.5px solid transparent;text-decoration:none;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,
             box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--color-accent);color:#fff;box-shadow:0 6px 16px rgba(196,116,60,.24)}
.btn-primary:hover{background:var(--color-accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(196,116,60,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(196,116,60,.2)}
.btn-outline{background:transparent;border-color:var(--color-primary);color:var(--color-primary)}
.btn-outline:hover{background:var(--color-primary);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.btn-sm{padding:11px 18px;font-size:14px}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:var(--color-primary);text-decoration:underline;text-underline-offset:4px;
  text-decoration-thickness:1px;text-decoration-color:rgba(30,97,87,.35);
}
.link-arrow:hover{color:var(--color-primary-deep);text-decoration-color:var(--color-primary-deep)}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 移动端抽屉 ============ */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:var(--color-bg);
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:20px 22px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--color-border)}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--color-border);border-radius:8px;
  background:#fff;font-size:20px;line-height:1;color:var(--color-primary-deep);
}
.drawer-close:hover{border-color:var(--color-primary)}
.drawer-nav{display:flex;flex-direction:column;margin:14px 0 20px}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;font-size:16px;color:var(--color-ink);
  border-bottom:1px solid var(--color-divider);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--color-primary);font-weight:600}
.drawer-cta{margin-top:auto;width:100%}

/* ============ 页面头部（文章） ============ */
.page-head{padding:34px 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--color-faint);margin-bottom:24px;
}
.breadcrumb a{color:var(--color-faint)}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb .sep{color:var(--color-divider)}
.breadcrumb .current{color:var(--color-primary);font-weight:600}

.article-head{padding:4px 0 30px;border-bottom:1px solid var(--color-divider);margin-bottom:36px}
.chip{
  display:inline-flex;align-items:center;gap:6px;background:var(--color-primary-pale);
  color:var(--color-primary);font-size:12.5px;font-weight:600;padding:6px 13px;border-radius:999px;
}
.article-title{
  font-size:clamp(28px,4vw,42px);line-height:1.28;margin:18px 0 16px;max-width:920px;
  letter-spacing:.2px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--color-faint)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--color-divider)}

/* ============ 正文 ============ */
.article-wrap{max-width:800px;margin:0 auto;padding-bottom:8px}
.article-card{
  background:var(--color-card);border:1px solid var(--color-border);
  border-radius:var(--radius-card);padding:44px 46px;box-shadow:var(--shadow-card);
}
.article-body{font-size:17px;line-height:1.92;color:var(--color-ink);word-wrap:break-word}
.article-body p{margin:0 0 1.2em}
.article-body h2{position:relative;font-size:clamp(22px,2.6vw,28px);margin:2em 0 .8em;padding-left:16px;line-height:1.35}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:var(--color-primary);
}
.article-body h3{font-size:20px;margin:1.6em 0 .6em;color:var(--color-primary-deep)}
.article-body h4{font-size:17.5px;margin:1.4em 0 .5em}
.article-body ul{margin:0 0 1.25em;padding-left:1.35em}
.article-body ul li{margin:.45em 0}
.article-body ul li::marker{color:var(--color-primary-light)}
.article-body ol{list-style:none;counter-reset:item;margin:0 0 1.25em;padding-left:0}
.article-body ol>li{counter-increment:item;position:relative;padding-left:38px;margin:.6em 0}
.article-body ol>li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:.08em;
  font-family:var(--font-serif);font-weight:700;color:var(--color-primary);font-size:15px;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--color-primary-pale);
  border-left:3px solid var(--color-primary);border-radius:0 8px 8px 0;
  color:var(--color-primary-deep);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:10px;margin:1.6em 0;width:100%;height:auto;background:var(--color-primary-pale)}
.article-body figcaption{font-size:13px;color:var(--color-faint);text-align:center;margin:-6px 0 1.6em}
.article-body a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--color-primary-deep)}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--color-border);padding:10px 12px;text-align:left}
.article-body th{background:var(--color-primary-pale);font-weight:600}
.article-body code{background:var(--color-bg-alt);padding:2px 6px;border-radius:4px;font-size:14.5px}
.article-body strong{color:var(--color-primary-deep)}
.article-body hr{border:none;border-top:1px solid var(--color-divider);margin:2em 0}

.empty-box{
  border:1px dashed var(--color-divider);border-radius:10px;padding:56px 24px;
  text-align:center;background:#FBFAF7;
}
.empty-box svg{margin:0 auto 14px}
.empty-box p{font-size:15px;color:var(--color-muted);margin-bottom:18px}

.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin:26px 0 0;padding-top:22px;border-top:1px solid var(--color-divider);
}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px}
.foot-tag{
  font-size:13px;color:var(--color-primary);background:var(--color-primary-pale);
  padding:6px 12px;border-radius:999px;
}

/* ============ 板块通用 ============ */
.section{padding:76px 0}
.section-alt{background:var(--color-bg-alt)}
.section-head{max-width:660px;margin-bottom:38px}
.section-eyebrow{
  font-size:13px;letter-spacing:.18em;font-weight:600;color:var(--color-primary-light);
}
.section-title{font-size:clamp(24px,3vw,32px);margin:10px 0 12px;line-height:1.32}
.section-desc{color:var(--color-muted);font-size:15.5px;margin:0}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
@media (max-width:640px){.section{padding:52px 0}.section-head-row{flex-direction:column;align-items:flex-start;gap:12px}}

/* ============ 卡片 ============ */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:1024px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr}}
.rel-card{
  position:relative;display:flex;flex-direction:column;background:var(--color-card);
  border:1px solid var(--color-border);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);text-decoration:none;color:inherit;
  transition:transform .2s ease,box-shadow .2s ease;
}
.rel-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--color-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;z-index:3;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);color:inherit}
.rel-card:hover::before{transform:scaleX(1)}
.rel-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--color-primary-pale)}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rel-card:hover .rel-cover img{transform:scale(1.04)}
.badge{
  position:absolute;left:12px;top:12px;z-index:2;background:var(--color-primary-pale);
  color:var(--color-primary);font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;
}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.rel-title{
  font-family:var(--font-serif);font-size:18px;line-height:1.45;margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-text{
  font-size:14.5px;color:var(--color-muted);line-height:1.78;margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--color-primary)}
.rel-card:hover .rel-more svg{transform:translateX(3px)}
.rel-more svg{transition:transform .18s ease}

/* ============ CTA 通栏 ============ */
.cta-band{
  background:var(--color-deep);color:#fff;padding:70px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-60px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,97,87,.55) 0%,rgba(16,49,44,0) 70%);
}
.cta-inner{position:relative;z-index:2;max-width:760px;margin:0 auto;text-align:center}
.cta-eyebrow{font-size:13px;letter-spacing:.18em;font-weight:600;color:#9BC7BC;margin:0 0 12px}
.cta-title{font-size:clamp(24px,3vw,32px);color:#fff;margin:0 0 14px;line-height:1.34}
.cta-text{color:rgba(255,255,255,.74);font-size:15.5px;margin:0 auto 28px;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ============ 页脚 ============ */
.site-footer{background:var(--color-deep);color:rgba(255,255,255,.72);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-weight:700;
  font-size:17px;color:#fff;margin-bottom:14px;
}
.footer-brand svg{width:34px;height:34px;flex:0 0 auto}
.footer-title{font-family:var(--font-serif);font-size:15px;color:#fff;margin:0 0 14px;letter-spacing:.5px}
.footer-link{color:rgba(255,255,255,.72);font-size:14.5px;line-height:2.1}
.footer-link:hover{color:var(--color-accent)}
.footer-note{font-size:14px;line-height:2;color:rgba(255,255,255,.66);margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding:20px 0;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.76)}
.footer-bottom a:hover{color:var(--color-accent)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-desktop{display:none}
  .menu-toggle{display:inline-flex}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
}
@media (max-width:768px){
  .header-inner{height:68px}
  .brand-text{font-size:15.5px}
  .brand svg{width:32px;height:32px}
  .header-actions .btn-sm{display:none}
  .page-head{padding-top:24px}
  .article-head{padding-bottom:22px;margin-bottom:26px}
  .article-card{padding:24px 20px}
  .article-body{font-size:16.5px;line-height:1.88}
  .cta-band{padding:52px 0}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .article-foot{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --color-primary:#1E6157;
  --color-primary-dark:#123F38;
  --color-primary-light:#3C8479;
  --color-primary-tint:#E8F0ED;
  --color-accent:#C4743C;
  --color-accent-dark:#A85E2C;
  --color-accent-tint:#F7E9DD;
  --color-bg:#F8F6F1;
  --color-bg-alt:#EFEBE2;
  --color-surface:#FFFFFF;
  --color-deep:#10312C;
  --color-ink:#16201E;
  --color-ink-2:#5A6663;
  --color-ink-3:#8A9490;
  --color-line:#E3DED3;
  --color-line-2:#D8D2C6;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-card:0 1px 2px rgba(18,63,56,.06);
  --shadow-hover:0 10px 24px rgba(18,63,56,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:Inter,"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(--color-bg);
  color:var(--color-ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.88;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--color-ink);line-height:1.3;margin:0}
h1{font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.28}
h2{font-size:clamp(23px,2.6vw,30px);font-weight:700}
h3{font-size:19px;font-weight:700}
p{margin:0 0 1.15em}
a{color:var(--color-primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--color-primary-dark)}
img{max-width:100%;display:block}
button{font:inherit}
:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:4px}
::selection{background:var(--color-primary-tint);color:var(--color-primary-dark)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--color-bg-alt)}
::-webkit-scrollbar-thumb{background:#C6CFC9;border-radius:999px;border:2px solid var(--color-bg-alt)}
::-webkit-scrollbar-thumb:hover{background:var(--color-primary-light)}

.container-x{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
@media (min-width:768px){.container-x{padding:0 24px}}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:76px 0}}
.section-alt{background:var(--color-bg-alt)}
.section-tight{padding:44px 0}
@media (min-width:768px){.section-tight{padding:56px 0}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(248,246,241,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--color-line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand svg{width:34px;height:34px;flex:none}
.brand-text{font-family:var(--font-serif);font-weight:700;font-size:17px;color:var(--color-primary-dark);letter-spacing:.01em;white-space:nowrap}
.nav-desktop{display:none;align-items:center;gap:30px}
@media (min-width:1024px){.nav-desktop{display:flex}}
.nav-link{
  position:relative;font-size:15px;color:var(--color-ink-2);text-decoration:none;
  padding:9px 0;white-space:nowrap;transition:color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--color-primary);transition:width .2s ease-out;border-radius:2px;
}
.nav-link:hover{color:var(--color-primary)}
.nav-link:hover::after{width:60%}
.nav-link.is-active{color:var(--color-primary);font-weight:600}
.nav-link.is-active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:14px}
.menu-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;border:1px solid var(--color-line);
  background:var(--color-surface);border-radius:var(--radius-btn);cursor:pointer;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.menu-toggle span{display:block;height:2px;background:var(--color-primary-dark);border-radius:2px}
.menu-toggle:hover{border-color:var(--color-primary);background:var(--color-primary-tint)}
@media (min-width:1024px){.menu-toggle{display:none}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1.5px solid transparent;line-height:1.2;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}
.btn-primary:hover{background:var(--color-accent-dark);border-color:var(--color-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(196,116,60,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}
.btn-outline:hover{background:var(--color-primary);color:#fff}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;box-shadow:0 0 0 4px rgba(30,97,87,.22)}
.text-link{color:var(--color-primary);font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.text-link:hover{color:var(--color-primary-dark)}

/* ---------- Mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:var(--color-bg);
  display:flex;flex-direction:column;transform:translateX(102%);
  transition:transform .24s ease-out;visibility:hidden;
}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--color-line)}
.drawer-close{
  width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--color-line);
  background:var(--color-surface);color:var(--color-primary-dark);font-size:22px;line-height:1;cursor:pointer;
  transition:background .18s ease-out,border-color .18s ease-out;
}
.drawer-close:hover{background:var(--color-primary-tint);border-color:var(--color-primary)}
.drawer-nav{display:flex;flex-direction:column;padding:8px 20px;overflow-y:auto}
.drawer-link{
  display:flex;align-items:center;min-height:54px;font-size:16.5px;
  color:var(--color-ink);text-decoration:none;border-bottom:1px solid var(--color-line);
  transition:color .18s ease-out,padding-left .18s ease-out;
}
.drawer-link:hover{color:var(--color-primary);padding-left:6px}
.drawer-link.is-active{color:var(--color-primary);font-weight:700}
.drawer-foot{padding:20px;margin-top:auto;border-top:1px solid var(--color-line)}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:13px;color:var(--color-ink-3);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb a{color:var(--color-ink-3);text-decoration:none}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb .current{color:var(--color-primary);font-weight:600}
.breadcrumb .sep{color:var(--color-line-2)}

/* ---------- Hero ---------- */
.hero-cat{padding:36px 0 52px}
@media (min-width:1024px){.hero-cat{padding:48px 0 72px}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;
  background:var(--color-primary-tint);color:var(--color-primary-dark);
  font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:18px;
}
.hero-sub{font-size:17px;color:var(--color-ink-2);max-width:560px;margin:18px 0 26px;line-height:1.85}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 26px;padding-top:22px;border-top:1px solid var(--color-line)}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--color-ink-2)}
.trust-item svg{width:16px;height:16px;flex:none;color:var(--color-accent)}
.hero-frame{position:relative;border-radius:12px}
.hero-frame::before{
  content:"";position:absolute;inset:-8px -8px 8px 8px;border:1px solid var(--color-primary);
  border-radius:12px;opacity:.35;
}
.hero-frame img{position:relative;width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:12px;background:var(--color-primary-tint)}

/* ---------- Generic blocks ---------- */
.block-head{max-width:720px;margin-bottom:34px}
.block-head p{color:var(--color-ink-2);margin:12px 0 0}
.sec-num{font-family:var(--font-serif);color:var(--color-accent);font-size:14px;font-weight:700;letter-spacing:.16em;display:block;margin-bottom:10px}
h2.with-bar{position:relative;padding-left:16px}
h2.with-bar::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;background:var(--color-primary)}

.prep-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.prep-grid{grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start}}
.prep-list{border-top:1px solid var(--color-line)}
.prep-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--color-line)}
.prep-num{font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--color-primary);flex:none;width:30px}
.prep-item h3{margin-bottom:6px;font-size:18px}
.prep-item p{margin:0;color:var(--color-ink-2);font-size:15.5px;line-height:1.8}
.prep-media{border-radius:var(--radius-card);overflow:hidden;background:var(--color-primary-tint);box-shadow:var(--shadow-card)}
.prep-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.prep-media figcaption{font-size:13px;color:var(--color-ink-3);padding:12px 16px;background:var(--color-surface);border-top:1px solid var(--color-line)}

/* ---------- Timeline ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:19px;top:12px;bottom:12px;width:1px;background:var(--color-line-2)}
.step{position:relative;padding:0 0 38px 60px}
.step:last-child{padding-bottom:0}
.step-dot{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:999px;
  background:var(--color-surface);border:1px solid var(--color-line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-weight:700;font-size:15px;color:var(--color-primary);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,color .2s ease-out;
}
.step:hover .step-dot{border-color:var(--color-primary);color:var(--color-primary-dark);box-shadow:0 0 0 5px rgba(30,97,87,.10)}
.step-card{
  background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.step-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--color-primary-light)}
.step-card h3{margin-bottom:8px}
.step-card p{margin:0;color:var(--color-ink-2);font-size:15.5px;line-height:1.82}
.step-tip{margin-top:12px;font-size:14px;color:var(--color-accent-dark);background:var(--color-accent-tint);border-radius:6px;padding:9px 13px;display:inline-block}

/* ---------- Device blocks ---------- */
.device-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:768px){.device-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
@media (min-width:1024px){.device-grid{grid-template-columns:1.15fr .85fr .9fr;gap:24px}}
.device-card{
  background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-card);
  padding:26px 24px;position:relative;overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.device-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--color-primary);transition:width .25s ease-out}
.device-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.device-card:hover::after{width:100%}
.device-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--color-primary-dark);background:var(--color-primary-tint);padding:4px 11px;border-radius:999px;margin-bottom:12px}
.device-card h3{margin-bottom:10px}
.device-card p{color:var(--color-ink-2);font-size:15.5px;margin:0 0 .8em}
.device-card p:last-child{margin-bottom:0}
.device-card ul{margin:0;padding-left:18px;color:var(--color-ink-2);font-size:15.5px}
.device-card li{margin-bottom:6px}

/* ---------- Troubleshoot list ---------- */
.trouble-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.trouble-grid{grid-template-columns:repeat(2,1fr);gap:16px 24px}}
.trouble-item{
  display:flex;gap:14px;padding:18px 20px;background:var(--color-surface);
  border:1px solid var(--color-line);border-radius:var(--radius-card);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.trouble-item:hover{border-color:var(--color-primary-light);box-shadow:var(--shadow-card)}
.trouble-item .mark{flex:none;width:22px;height:22px;margin-top:3px;color:var(--color-primary)}
.trouble-item h3{font-size:16.5px;margin-bottom:4px}
.trouble-item p{margin:0;font-size:15px;color:var(--color-ink-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.faq-layout{grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}}
.faq-aside p{color:var(--color-ink-2);font-size:15.5px}
.faq-list{border-bottom:1px solid var(--color-line)}
.faq-item{border-top:1px solid var(--color-line)}
.faq-q{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:58px;padding:15px 4px;font-weight:600;font-size:16.5px;color:var(--color-ink);
  transition:color .18s ease-out;
}
.faq-q::-webkit-details-marker{display:none}
.faq-item:hover .faq-q{color:var(--color-primary)}
.faq-icon{position:relative;width:16px;height:16px;flex:none;transition:transform .2s ease-out}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--color-primary);border-radius:2px}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
details[open] .faq-icon{transform:rotate(45deg)}
.faq-a{background:#FBFAF7;border-radius:6px;padding:14px 18px;margin:0 0 16px;font-size:15.5px;color:var(--color-ink-2);line-height:1.85}
.faq-a p{margin:0}

/* ---------- CTA band ---------- */
.cta-band{background:var(--color-deep);color:#fff;border-radius:14px;padding:40px 28px}
@media (min-width:768px){.cta-band{padding:52px 48px}}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.78);max-width:620px;margin:14px 0 26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-points{display:grid;grid-template-columns:1fr;gap:12px;margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14)}
@media (min-width:768px){.cta-points{grid-template-columns:repeat(3,1fr)}}
.cta-point{font-size:14.5px;color:rgba(255,255,255,.8);display:flex;gap:10px;align-items:flex-start}
.cta-point svg{width:18px;height:18px;flex:none;margin-top:4px;color:#C4743C}

/* ---------- Footer ---------- */
.site-footer{background:var(--color-deep);color:rgba(255,255,255,.72);margin-top:64px;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand svg{width:32px;height:32px;flex:none}
.footer-brand span{font-family:var(--font-serif);font-weight:700;font-size:17px;color:#fff}
.footer-title{color:#fff;font-size:16px;margin-bottom:14px;font-family:var(--font-sans);font-weight:600}
.footer-note{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);margin:0}
.footer-link{color:rgba(255,255,255,.72);font-size:14.5px;text-decoration:none;line-height:2.1;transition:color .18s ease-out}
.footer-link:hover{color:var(--color-accent)}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--color-accent)}

/* ---------- utility ---------- */
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* roulang page: category2 */
:root{
  --color-primary:#1E6157;
  --color-primary-dark:#123F38;
  --color-primary-light:#3C8479;
  --color-primary-soft:#E8F0ED;
  --color-accent:#C4743C;
  --color-accent-dark:#A85E2C;
  --color-accent-soft:#F7E9DD;
  --color-bg:#F8F6F1;
  --color-bg-alt:#EFEBE2;
  --color-card:#FFFFFF;
  --color-dark:#10312C;
  --color-ink:#16201E;
  --color-muted:#5A6663;
  --color-faint:#8A9490;
  --color-border:#E3DED3;
  --color-line:#D8D2C6;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-card:0 1px 2px rgba(18,63,56,.06);
  --shadow-lift:0 10px 24px rgba(18,63,56,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:Inter,"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(--color-bg);
  color:var(--color-ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--color-primary);text-decoration:none;}
a:hover{color:var(--color-primary-dark);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--color-ink);margin:0;line-height:1.3;font-weight:700;}
h1{font-size:clamp(30px,4.4vw,44px);line-height:1.28;}
h2{font-size:clamp(24px,3vw,31px);}
h3{font-size:clamp(18px,2vw,21px);line-height:1.45;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--color-primary-soft);color:var(--color-primary-dark);}
:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:4px;}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){
  .container-x{padding:0 24px;}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(248,246,241,.94);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--color-border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:74px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--color-ink);
  font-family:var(--font-serif);
  font-weight:700;
  font-size:17px;
  letter-spacing:.01em;
}
.brand svg{width:36px;height:36px;flex:none;}
.brand-text{white-space:nowrap;}
.nav-desktop{
  display:none;
  align-items:center;
  gap:28px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  color:var(--color-muted);
  font-size:15px;
  line-height:1.4;
  transition:color .17s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:0;
  height:2px;
  background:var(--color-primary);
  transition:width .18s ease-out;
}
.nav-link:hover{color:var(--color-primary);}
.nav-link:hover::after{width:60%;}
.nav-link.is-active{color:var(--color-primary);font-weight:600;}
.nav-link.is-active::after{width:60%;}
.header-actions{display:flex;align-items:center;gap:14px;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  font-family:var(--font-sans);
  cursor:pointer;
  text-align:center;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{
  background:var(--color-accent);
  color:#fff;
  box-shadow:0 1px 2px rgba(168,94,44,.22);
}
.btn-primary:hover{background:var(--color-accent-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 rgba(0,0,0,0);}
.btn-ghost{
  background:transparent;
  color:var(--color-primary);
  border-color:var(--color-primary);
}
.btn-ghost:hover{background:var(--color-primary);color:#fff;}
.btn-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.55);
}
.btn-light:hover{background:#fff;color:var(--color-primary-dark);border-color:#fff;}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}
.link-arrow{
  color:var(--color-primary);
  font-size:14.5px;
  font-weight:600;
  border-bottom:1px solid currentColor;
  padding-bottom:2px;
  transition:color .16s ease-out;
}
.link-arrow:hover{color:var(--color-primary-dark);}

.menu-toggle{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  padding:0 10px;
  background:transparent;
  border:1px solid var(--color-border);
  border-radius:var(--radius-btn);
  cursor:pointer;
}
.menu-toggle span{display:block;height:2px;background:var(--color-primary);border-radius:2px;transition:transform .18s ease-out,opacity .18s ease-out;}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer{
  position:fixed;
  inset:0;
  z-index:70;
  background:var(--color-bg);
  padding:20px;
  display:flex;
  flex-direction:column;
  transform:translateY(-8px);
  opacity:0;
  pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--color-border);
  margin-bottom:8px;
}
.drawer-close{
  width:44px;height:44px;
  border:1px solid var(--color-border);
  background:#fff;
  border-radius:var(--radius-btn);
  font-size:20px;
  line-height:1;
  color:var(--color-primary);
  cursor:pointer;
}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 4px;
  border-bottom:1px solid var(--color-border);
  color:var(--color-ink);
  font-size:16px;
}
.drawer nav a.is-active{color:var(--color-primary);font-weight:600;}
.drawer .drawer-cta{margin-top:22px;}

@media (min-width:768px){
  .nav-desktop{display:flex;gap:28px;}
  .menu-toggle{display:none;}
  .drawer{display:none;}
}
@media (min-width:1024px){
  .nav-desktop{gap:30px;}
}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#F3F1EA 0%,var(--color-bg) 100%);
  border-bottom:1px solid var(--color-border);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  opacity:.06;
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  padding:40px 0 52px;
}
@media (min-width:768px){
  .page-hero-inner{padding:56px 0 66px;}
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--color-faint);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--color-faint);}
.breadcrumb a:hover{color:var(--color-primary);}
.breadcrumb .sep{color:var(--color-line);}
.breadcrumb .current{color:var(--color-primary);font-weight:600;}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:999px;
  background:var(--color-primary-soft);
  color:var(--color-primary);
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--color-accent);display:inline-block;}
.page-hero h1{max-width:20em;}
.page-hero .hero-lead{
  max-width:44em;
  margin-top:16px;
  color:var(--color-muted);
  font-size:16.5px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:26px;
  color:var(--color-muted);
  font-size:14px;
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta svg{width:16px;height:16px;flex:none;color:var(--color-primary-light);}

/* ---------- Sections ---------- */
.section{padding:56px 0;}
@media (min-width:768px){
  .section{padding:78px 0;}
}
.section-alt{background:var(--color-bg-alt);}
.section-soft{background:var(--color-primary-soft);}
.section-dark{background:var(--color-dark);color:#fff;}
.section-head{max-width:44em;margin-bottom:38px;}
.section-index{
  display:block;
  font-family:var(--font-serif);
  font-size:14px;
  letter-spacing:.16em;
  color:var(--color-accent);
  margin-bottom:12px;
}
.section-head h2{padding-left:14px;border-left:4px solid var(--color-primary);}
.section-sub{
  margin-top:14px;
  padding-left:18px;
  color:var(--color-muted);
  font-size:15.5px;
}
.tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:var(--color-primary-soft);
  color:var(--color-primary);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.tag-accent{background:var(--color-accent-soft);color:var(--color-accent-deep,#A85E2C);}

/* 能力总览：左窄标题 + 右宽清单 */
.overview-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:900px){
  .overview-grid{grid-template-columns:0.78fr 1.22fr;gap:56px;}
}
.overview-aside h2{padding-left:14px;border-left:4px solid var(--color-primary);}
.overview-aside p{margin-top:16px;color:var(--color-muted);font-size:15.5px;}
.numbered-list{border-top:1px solid var(--color-border);}
.numbered-list li{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:18px;
  padding:22px 0;
  border-bottom:1px solid var(--color-border);
}
.numbered-list .num{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  color:var(--color-primary);
  line-height:1.4;
}
.numbered-list h3{font-size:18.5px;margin-bottom:6px;}
.numbered-list p{color:var(--color-muted);font-size:15px;margin:0;}

/* 交替图文行 */
.feature-rows{border-top:1px solid var(--color-border);}
.feature-row{
  display:grid;
  grid-template-columns:1fr;
  gap:26px;
  align-items:center;
  padding:38px 0;
  border-bottom:1px solid var(--color-border);
}
@media (min-width:900px){
  .feature-row{grid-template-columns:1fr 1fr;gap:56px;padding:52px 0;}
  .feature-row:nth-child(even) .feature-media{order:2;}
}
.feature-media{
  position:relative;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--color-border);
  background:var(--color-primary-soft);
}
.feature-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.feature-media::after{
  content:"";
  position:absolute;
  inset:0;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.25);
  pointer-events:none;
}
.feature-body h3{margin:14px 0 12px;}
.feature-body p{color:var(--color-muted);font-size:15.6px;}
.dot-list{margin-top:14px;display:grid;gap:9px;}
.dot-list li{
  position:relative;
  padding-left:20px;
  color:var(--color-ink);
  font-size:15px;
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--color-primary-light);
}

/* 数据条 */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0;
}
@media (min-width:768px){
  .stat-strip{grid-template-columns:repeat(4,1fr);}
}
.stat-item{
  padding:26px 18px;
  border-right:1px solid rgba(30,97,87,.16);
  border-bottom:1px solid rgba(30,97,87,.16);
}
@media (min-width:768px){
  .stat-item{border-bottom:none;}
  .stat-item:last-child{border-right:none;}
}
@media (max-width:767px){
  .stat-item:nth-child(2n){border-right:none;}
}
.stat-num{
  font-family:var(--font-serif);
  font-size:clamp(30px,3.4vw,38px);
  font-weight:700;
  color:var(--color-primary);
  line-height:1.15;
}
.stat-num small{font-size:15px;font-family:var(--font-sans);font-weight:600;margin-left:4px;}
.stat-label{margin-top:8px;color:var(--color-muted);font-size:14px;}

/* 场景清单 */
.scene-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
}
@media (min-width:768px){
  .scene-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
}
.scene-item{
  background:var(--color-card);
  border:1px solid var(--color-border);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card);
  position:relative;
  transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.scene-item::before{
  content:"";
  position:absolute;
  left:0;top:24px;
  width:3px;height:0;
  background:var(--color-primary);
  border-radius:0 3px 3px 0;
  transition:height .2s ease-out;
}
.scene-item:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);border-color:#D6D0C3;}
.scene-item:hover::before{height:34px;}
.scene-item h3{font-size:18.5px;margin-bottom:10px;}
.scene-item p{color:var(--color-muted);font-size:15px;margin:0;}

/* FAQ */
.faq-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:30px;
}
@media (min-width:900px){
  .faq-grid{grid-template-columns:0.72fr 1.28fr;gap:56px;}
}
.faq-aside h2{padding-left:14px;border-left:4px solid var(--color-primary);}
.faq-aside p{margin-top:16px;color:var(--color-muted);font-size:15.5px;}
.faq-list{border-top:1px solid var(--color-border);}
.faq-item{border-bottom:1px solid var(--color-border);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:60px;
  padding:16px 2px;
  cursor:pointer;
  list-style:none;
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:600;
  color:var(--color-ink);
  transition:color .17s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--color-primary);}
.faq-icon{
  flex:none;
  width:26px;
  height:26px;
  border:1px solid var(--color-border);
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--color-primary);
  font-size:16px;
  line-height:1;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out;
}
.faq-item[open] summary{color:var(--color-primary);}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--color-primary);color:#fff;border-color:var(--color-primary);}
.faq-body{
  padding:4px 2px 20px;
  color:var(--color-muted);
  font-size:15.4px;
  line-height:1.85;
  background:linear-gradient(180deg,rgba(251,250,247,0) 0%,rgba(251,250,247,.9) 20%);
}
.faq-body p{margin-bottom:.7em;}

/* CTA */
.cta-section{
  background:var(--color-dark);
  color:#fff;
  padding:58px 0;
}
@media (min-width:768px){
  .cta-section{padding:76px 0;}
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:900px){
  .cta-grid{grid-template-columns:1.25fr 0.75fr;gap:56px;align-items:center;}
}
.cta-section h2{color:#fff;padding-left:14px;border-left:4px solid var(--color-accent);}
.cta-section p{color:rgba(255,255,255,.76);margin-top:16px;font-size:15.6px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.contact-box{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-card);
  padding:24px 22px;
}
.contact-box h3{color:#fff;font-size:18px;margin-bottom:14px;}
.contact-box dl{margin:0;display:grid;gap:12px;}
.contact-box dt{color:rgba(255,255,255,.6);font-size:13px;}
.contact-box dd{margin:2px 0 0;color:#fff;font-size:15px;word-break:break-all;}
.contact-box a{color:#F2C79F;border-bottom:1px solid rgba(242,199,159,.5);}
.contact-box a:hover{color:#fff;}

/* Footer */
.site-footer{
  background:var(--color-dark);
  color:rgba(255,255,255,.72);
  padding:52px 0 0;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:36px;
}
@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand svg{width:34px;height:34px;flex:none;}
.footer-note{color:rgba(255,255,255,.66);font-size:14px;line-height:1.85;margin:0;}
.footer-title{
  color:#fff;
  font-size:15px;
  font-family:var(--font-sans);
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer-link{
  display:inline-block;
  color:rgba(255,255,255,.72);
  font-size:14px;
  line-height:2;
  transition:color .16s ease-out;
}
.footer-link:hover{color:var(--color-accent);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.55);
  font-size:13px;
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:var(--color-accent);}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--color-bg-alt);}
::-webkit-scrollbar-thumb{background:#C8C2B5;border-radius:999px;border:2px solid var(--color-bg-alt);}
::-webkit-scrollbar-thumb:hover{background:var(--color-primary-light);}

/* 截断工具 */
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

/* roulang page: category3 */
:root{
    --color-primary:#1E6157;
    --color-primary-dark:#123F38;
    --color-primary-light:#3C8479;
    --color-primary-soft:#E8F0ED;
    --color-accent:#C4743C;
    --color-accent-dark:#A85E2C;
    --color-accent-soft:#F7E9DD;
    --color-bg:#F8F6F1;
    --color-bg-alt:#EFEBE2;
    --color-card:#FFFFFF;
    --color-dark:#10312C;
    --color-ink:#16201E;
    --color-muted:#5A6663;
    --color-faint:#8A9490;
    --color-border:#E3DED3;
    --color-line:#D8D2C6;
    --radius-card:10px;
    --radius-btn:6px;
    --shadow-card:0 1px 2px rgba(18,63,56,.06);
    --shadow-lift:0 10px 24px rgba(18,63,56,.10);
    --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
    --font-sans:'Inter','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(--color-bg);
    color:var(--color-ink);
    font-family:var(--font-sans);
    font-size:16.5px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--color-primary);text-decoration:none;transition:color .18s ease;}
  a:hover{color:var(--color-primary-dark);}
  button{font-family:inherit;}
  h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;margin:0;line-height:1.32;color:var(--color-ink);}
  p{margin:0 0 1.15em;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;}

  .container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
  .narrow{max-width:848px;}
  @media (max-width:767px){.container-x{padding:0 20px;}}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(248,246,241,.94);
    backdrop-filter:saturate(150%) blur(8px);
    border-bottom:1px solid var(--color-border);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
  .brand svg{width:36px;height:36px;flex:none;}
  .brand-text{
    font-family:var(--font-serif);font-size:18px;font-weight:700;
    color:var(--color-primary-dark);letter-spacing:.02em;white-space:nowrap;
  }
  .nav-desktop{display:flex;align-items:center;gap:30px;}
  .nav-link{
    position:relative;padding:6px 0;font-size:15px;color:var(--color-muted);
    transition:color .16s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:-2px;height:2px;width:60%;
    background:var(--color-primary);transform:scaleX(0);transform-origin:left;
    transition:transform .18s ease;
  }
  .nav-link:hover{color:var(--color-primary);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--color-primary);font-weight:600;}
  .nav-link.is-active::after{transform:scaleX(1);}
  .header-actions{display:flex;align-items:center;gap:14px;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--radius-btn);border:1.5px solid transparent;
    font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
    transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .btn-primary{background:var(--color-accent);color:#fff;box-shadow:0 1px 2px rgba(168,94,44,.24);}
  .btn-primary:hover{background:var(--color-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(168,94,44,.24);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 1px 2px rgba(168,94,44,.2);}
  .btn-outline{background:transparent;color:var(--color-primary);border-color:var(--color-primary);}
  .btn-outline:hover{background:var(--color-primary);color:#fff;}
  .btn-outline:active{transform:translateY(1px);}
  .btn-sm{padding:9px 16px;font-size:14px;}
  .btn-lg{padding:14px 28px;font-size:16px;}

  .menu-toggle{
    display:none;width:44px;height:44px;border:1px solid var(--color-border);
    border-radius:var(--radius-btn);background:#fff;cursor:pointer;
    flex-direction:column;align-items:center;justify-content:center;gap:5px;
  }
  .menu-toggle span{display:block;width:18px;height:1.6px;background:var(--color-primary-dark);transition:transform .18s ease,opacity .18s ease;}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

  /* ---------- Drawer ---------- */
  .drawer{
    position:fixed;inset:0;z-index:80;background:var(--color-bg);
    transform:translateX(100%);transition:transform .24s ease;
    display:flex;flex-direction:column;padding:20px;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--color-border);}
  .drawer-close{
    width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--color-border);
    background:#fff;color:var(--color-primary-dark);font-size:20px;cursor:pointer;
  }
  .drawer-nav{display:flex;flex-direction:column;margin:8px 0 20px;}
  .drawer-nav a{
    display:flex;align-items:center;min-height:52px;font-size:16px;color:var(--color-ink);
    border-bottom:1px solid var(--color-border);
  }
  .drawer-nav a.is-active{color:var(--color-primary);font-weight:600;}
  .drawer .btn{width:100%;}
  @media (min-width:769px){.drawer{display:none;}}

  /* ---------- Hero ---------- */
  .page-hero{
    background-image:linear-gradient(rgba(248,246,241,.94),rgba(248,246,241,.98)),url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--color-border);
    padding:56px 0 60px;
  }
  .breadcrumb{font-size:13px;color:var(--color-faint);margin-bottom:18px;}
  .breadcrumb a{color:var(--color-faint);}
  .breadcrumb a:hover{color:var(--color-primary);}
  .breadcrumb span.sep{margin:0 8px;color:var(--color-line);}
  .breadcrumb .current{color:var(--color-primary);font-weight:600;}
  .page-hero h1{
    font-size:clamp(28px,4vw,42px);line-height:1.28;margin-bottom:16px;
    letter-spacing:.01em;
  }
  .page-hero h1 .hl{color:var(--color-primary);}
  .hero-lead{font-size:17px;color:var(--color-muted);max-width:660px;margin-bottom:24px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:6px 14px;border-radius:999px;font-size:13.5px;
    background:var(--color-primary-soft);color:var(--color-primary);border:1px solid #d5e4df;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

  /* ---------- Sections ---------- */
  .section{padding:72px 0;}
  .section-alt{background:var(--color-bg-alt);}
  .section-white{background:#fff;}
  .section-head{margin-bottom:34px;}
  .section-eyebrow{
    display:inline-block;font-family:var(--font-serif);font-size:14px;color:var(--color-primary-light);
    letter-spacing:.14em;margin-bottom:10px;
  }
  .section-title{font-size:clamp(23px,2.6vw,30px);position:relative;padding-left:16px;}
  .section-title::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
    background:var(--color-primary);border-radius:2px;
  }
  .section-desc{color:var(--color-muted);max-width:680px;margin-top:12px;}

  /* ---------- FAQ ---------- */
  .faq-block{padding:56px 0;}
  .faq-group-title{
    display:flex;align-items:baseline;gap:14px;
    font-size:clamp(21px,2.4vw,26px);margin-bottom:10px;
  }
  .group-num{
    font-family:var(--font-serif);font-size:20px;color:var(--color-primary);flex:none;
    letter-spacing:.06em;
  }
  .faq-group-desc{color:var(--color-muted);margin-bottom:22px;font-size:15.5px;}

  .faq-list{border-top:1px solid var(--color-line);}
  .faq-item{border-bottom:1px solid var(--color-line);}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    min-height:56px;padding:18px 0;cursor:pointer;list-style:none;
    font-family:var(--font-serif);font-size:17px;font-weight:600;color:var(--color-ink);
    transition:color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--color-primary);}
  .faq-sign{
    flex:none;width:28px;height:28px;border-radius:999px;
    border:1px solid var(--color-line);color:var(--color-primary);
    display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
    transition:transform .2s ease,background-color .2s ease,border-color .2s ease;
  }
  .faq-item[open] summary{color:var(--color-primary);}
  .faq-item[open] .faq-sign{transform:rotate(45deg);background:var(--color-primary-soft);border-color:#cfdfda;}
  .faq-answer{
    background:#FBFAF7;border-radius:8px;padding:16px 20px 20px;margin:0 0 18px;
    color:var(--color-muted);font-size:16px;line-height:1.88;
  }
  .faq-answer strong{color:var(--color-primary-dark);font-weight:600;}

  /* ---------- Split note ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
  .split-media{
    position:relative;border-radius:12px;overflow:hidden;
    box-shadow:var(--shadow-card);border:1px solid var(--color-border);
  }
  .split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--color-primary-soft);}
  .split-media::after{
    content:"";position:absolute;inset:auto -8px -8px auto;width:60%;height:60%;
    border:1px solid var(--color-primary);border-radius:12px;opacity:.28;pointer-events:none;
  }
  .checklist{margin-top:6px;}
  .checklist li{
    display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--color-border);
    color:var(--color-muted);font-size:15.8px;
  }
  .checklist li:last-child{border-bottom:0;}
  .checklist .dot{
    flex:none;width:7px;height:7px;border-radius:999px;background:var(--color-accent);margin-top:11px;
  }

  /* ---------- Contact ---------- */
  .contact-section{background:var(--color-dark);color:#fff;padding:76px 0;}
  .contact-section h2{color:#fff;font-size:clamp(23px,2.6vw,30px);}
  .contact-section p{color:rgba(255,255,255,.74);}
  .contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:start;}
  .contact-list li{
    display:flex;gap:12px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12);
    color:rgba(255,255,255,.78);font-size:15.5px;
  }
  .contact-list li:last-child{border-bottom:0;}
  .contact-list .k{color:#fff;font-weight:600;min-width:74px;flex:none;}
  .contact-form{
    background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
    border-radius:var(--radius-card);padding:26px;
  }
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:7px;}
  .field input,.field textarea{
    width:100%;padding:11px 13px;border-radius:var(--radius-btn);
    border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.94);
    color:var(--color-ink);font-size:15px;font-family:inherit;
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .field textarea{min-height:104px;resize:vertical;}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--color-primary);
    box-shadow:0 0 0 3px rgba(30,97,87,.28);
  }
  .form-note{font-size:13.5px;color:rgba(255,255,255,.6);margin:12px 0 0;}
  .form-msg{font-size:14px;color:#F0C79E;margin-top:12px;min-height:22px;}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--color-dark);color:rgba(255,255,255,.72);padding:60px 0 0;border-top:1px solid rgba(255,255,255,.08);}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand svg{width:34px;height:34px;flex:none;}
  .footer-brand span{font-family:var(--font-serif);font-size:17px;font-weight:700;color:#fff;}
  .footer-title{font-size:15px;color:#fff;margin-bottom:14px;font-family:var(--font-serif);letter-spacing:.04em;}
  .footer-note{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin:0;}
  .footer-link{color:rgba(255,255,255,.72);font-size:14.5px;line-height:2.1;}
  .footer-link:hover{color:var(--color-accent);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    border-top:1px solid rgba(255,255,255,.12);padding:18px 0 26px;font-size:13.5px;
    color:rgba(255,255,255,.6);
  }
  .footer-bottom a{color:rgba(255,255,255,.72);}
  .footer-bottom a:hover{color:var(--color-accent);}

  /* ---------- Responsive ---------- */
  @media (max-width:1024px){
    .nav-desktop{gap:20px;}
    .nav-link{font-size:14.5px;}
    .split{gap:32px;}
    .contact-grid{gap:34px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  }
  @media (max-width:768px){
    body{font-size:16px;}
    .nav-desktop{display:none;}
    .menu-toggle{display:flex;}
    .header-actions .btn{display:none;}
    .page-hero{padding:36px 0 44px;}
    .section{padding:52px 0;}
    .faq-block{padding:42px 0;}
    .split{grid-template-columns:1fr;}
    .contact-grid{grid-template-columns:1fr;}
    .contact-section{padding:54px 0;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .faq-item summary{font-size:16px;}
  }
  @media (max-width:520px){
    .footer-grid{grid-template-columns:1fr;}
    .brand-text{font-size:16px;}
    .hero-actions .btn{width:100%;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }