/* roulang page: index */
:root{
  --jade-900:#12211C; --jade-700:#1F4D3F; --jade-500:#3F8F76; --jade-300:#8FD0B6;
  --copper:#C2703A;
  --paper:#F6F4EF; --surface:#FFFFFF;
  --line:#E5E0D6;
  --ink:#141A17; --ink-2:#5A6560; --ink-3:#8C948E;
  --r-lg:28px; --r-md:24px; --r-sm:18px; --r-xs:12px;
  --sh-card:0 1px 2px rgba(20,26,23,.04), 0 12px 32px -12px rgba(20,26,23,.10);
  --sh-hover:0 18px 44px -14px rgba(20,26,23,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:-.01em;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(63,143,118,.35);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){ .container{padding:0 32px;} }
@media (min-width:1280px){ .container{padding:0;} }

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:20px;font-weight:700;color:var(--jade-900);letter-spacing:-.01em;}
.brand-mark{width:30px;height:30px;border-radius:999px;background:linear-gradient(120deg,var(--jade-700),var(--jade-500));display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-family:var(--serif);}
.nav-links{display:none;align-items:center;gap:0;}
@media (min-width:1024px){ .nav-links{display:flex;} }
.nav-links li{display:flex;align-items:center;}
.nav-links a{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--ink-2);transition:color .22s var(--ease);}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;background:var(--jade-500);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
.nav-links a:hover{color:var(--jade-700);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--jade-900);font-weight:500;}
.nav-sep{display:inline-block;width:1px;height:14px;background:var(--line);margin:0 20px;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.icon-btn{width:44px;height:44px;display:none;align-items:center;justify-content:center;border-radius:999px;border:1px solid transparent;color:var(--ink-2);background:transparent;cursor:pointer;transition:all .22s var(--ease);}
@media (min-width:1024px){ .icon-btn{display:flex;} }
.icon-btn:hover{background:#fff;border-color:var(--line);color:var(--jade-700);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:999px;border:1.5px solid transparent;font-size:15px;font-weight:500;cursor:pointer;transition:all .24s var(--ease);white-space:nowrap;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--jade-700);color:#fff;}
.btn-primary:hover{background:linear-gradient(120deg,#1F4D3F,#3F8F76);transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(31,77,63,.55);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{border-color:var(--jade-700);color:var(--jade-700);background:transparent;}
.btn-ghost:hover{background:rgba(31,77,63,.06);}
.btn-light{background:#F6F4EF;color:var(--jade-900);}
.btn-light:hover{background:#fff;transform:translateY(-1px);}
.btn-outline-light{border-color:rgba(246,244,239,.45);color:#F6F4EF;background:transparent;}
.btn-outline-light:hover{background:rgba(246,244,239,.12);}
.hamburger{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid transparent;border-radius:999px;cursor:pointer;color:var(--jade-900);}
.hamburger:hover{background:#fff;border-color:var(--line);}
@media (min-width:1024px){ .hamburger{display:none;} }
.mobile-menu{position:fixed;inset:0;z-index:80;background:var(--paper);display:none;padding:24px 24px 40px;overflow-y:auto;}
.mobile-menu.open{display:block;}
.mobile-menu-head{display:flex;align-items:center;justify-content:space-between;height:52px;margin-bottom:24px;}
.mobile-menu a.mm-link{display:block;font-family:var(--serif);font-size:20px;padding:20px 0;border-bottom:1px solid var(--line);color:var(--jade-900);}
.mobile-menu a.mm-link.active{color:var(--copper);}
.mobile-foot{margin-top:32px;font-size:13px;color:var(--ink-3);line-height:2;}

/* ---------- 通用 ---------- */
.section{padding:28px 0;}
@media (min-width:1024px){ .section{padding:48px 0;} }
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.18em;color:var(--copper);font-weight:600;text-transform:uppercase;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap;}
.section-title{font-size:clamp(24px,2.4vw,30px);line-height:1.3;}
.section-sub{margin-top:10px;font-size:15px;color:var(--ink-3);max-width:56ch;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--jade-700);transition:all .22s var(--ease);}
.text-link:hover{color:var(--copper);border-bottom:2px solid var(--copper);padding-bottom:2px;transform:translateX(4px);}
.pill{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;letter-spacing:.02em;background:rgba(31,77,63,.07);color:var(--jade-700);border:1px solid rgba(31,77,63,.12);}
.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:12.5px;background:rgba(246,244,239,.14);color:#F6F4EF;border:1px solid rgba(246,244,239,.28);}
.badge-num{font-family:var(--serif);font-size:14px;}

/* ---------- Hero ---------- */
.hero{padding:48px 0 28px;}
@media (min-width:1024px){ .hero{padding:76px 0 44px;} }
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center;}
@media (min-width:1024px){ .hero-grid{grid-template-columns:6fr 5fr;gap:56px;} }
.hero h1{font-size:clamp(34px,4.4vw,56px);line-height:1.15;margin:18px 0 20px;}
.hero .lead{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:52ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.stats{display:flex;flex-wrap:wrap;gap:24px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.stat{padding-right:24px;}
.stat + .stat{border-left:1px solid var(--line);padding-left:24px;}
.stat-num{font-family:var(--serif);font-size:30px;line-height:1.1;color:var(--jade-700);}
.stat-label{font-size:13px;letter-spacing:.02em;color:var(--ink-3);margin-top:4px;}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;box-shadow:var(--sh-card);}
@media (min-width:1024px){ .hero-media{aspect-ratio:5/6;} }
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(18,33,28,.42),rgba(31,77,63,.10) 46%,rgba(194,112,58,.20));}
.hero-media .badge{position:absolute;top:20px;left:20px;z-index:2;background:rgba(18,33,28,.55);border-color:rgba(246,244,239,.35);}

/* ---------- 目录 ---------- */
.toc-grid{display:grid;grid-template-columns:1fr;}
@media (min-width:1024px){ .toc-grid{grid-template-columns:7fr 5fr;column-gap:56px;} }
.toc-item{position:relative;display:flex;align-items:center;gap:18px;padding:22px 18px;border-bottom:1px solid var(--line);transition:background .24s var(--ease);}
.toc-item::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:2px;background:var(--copper);transform:scaleY(0);transform-origin:center;transition:transform .24s var(--ease);}
.toc-item:hover{background:#fff;}
.toc-item:hover::before{transform:scaleY(1);}
.toc-item:hover .arrow{transform:translateX(4px);color:var(--copper);}
.toc-num{font-family:var(--serif);font-size:14px;color:var(--copper);min-width:26px;}
.toc-main{flex:1;min-width:0;}
.toc-title{font-size:20px;line-height:1.4;}
.toc-desc{font-size:14px;color:var(--ink-3);margin-top:4px;}
.toc-count{font-size:12.5px;color:var(--ink-3);border:1px solid var(--line);border-radius:999px;padding:2px 10px;white-space:nowrap;}
.arrow{color:var(--ink-3);transition:transform .24s var(--ease),color .24s var(--ease);font-size:18px;}

/* ---------- 卡片 ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-card);display:flex;flex-direction:column;transition:box-shadow .24s var(--ease),transform .24s var(--ease);}
.card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.card-media{overflow:hidden;background:#EDE9E1;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-title{font-size:19px;line-height:1.45;}
.card-desc{font-size:14.5px;line-height:1.8;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{font-size:13px;letter-spacing:.02em;color:var(--ink-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:auto;}
.dot-sep{width:3px;height:3px;border-radius:50%;background:var(--ink-3);display:inline-block;}

.feature-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){ .feature-grid{grid-template-columns:7fr 5fr;} }
.feature-side{display:grid;grid-template-columns:1fr;gap:28px;}
.feature-main .card-media{aspect-ratio:16/9;}
.feature-side .card-media{aspect-ratio:4/3;}
@media (min-width:1024px){ .feature-side{grid-template-rows:1fr 1fr;} .feature-side .card-media{aspect-ratio:16/10;} }

.rec-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:640px){ .rec-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .rec-grid{grid-template-columns:repeat(3,1fr);} }
.rec-grid .card-media{aspect-ratio:16/10;}
.rec-grid .card-title{font-size:17px;}

/* ---------- CMS 列表 ---------- */
.cms-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:640px){ .cms-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .cms-grid{grid-template-columns:repeat(3,1fr);} }
.cms-grid .card-body{gap:10px;}
.cms-grid .card-title{font-size:18px;}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-md);padding:46px 24px;text-align:center;color:var(--ink-3);font-size:15px;background:rgba(255,255,255,.5);}
.empty-state a{color:var(--jade-700);border-bottom:2px solid rgba(194,112,58,.5);margin-left:6px;}

/* ---------- CTA ---------- */
.cta-band{background:var(--jade-900);color:#F6F4EF;border-radius:var(--r-lg);padding:36px 26px;display:flex;flex-direction:column;gap:26px;position:relative;overflow:hidden;}
@media (min-width:1024px){ .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:46px 48px;gap:40px;} }
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(63,143,118,.35),transparent 58%);pointer-events:none;}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);color:#F6F4EF;line-height:1.35;}
.cta-band p{font-size:15px;color:rgba(246,244,239,.72);margin-top:10px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}
@media (max-width:639px){ .cta-actions .btn{width:100%;} }
.cta-inner{position:relative;z-index:2;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 4px;background:transparent;border:0;text-align:left;font-family:var(--serif);font-size:17px;font-weight:700;color:var(--jade-900);cursor:pointer;transition:color .22s var(--ease);}
.faq-q:hover{color:var(--copper);}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .28s var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--copper);border-radius:2px;}
.faq-icon::before{left:0;right:0;top:10px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:76ch;}

/* ---------- 咨询表单 ---------- */
.subscribe{display:grid;grid-template-columns:1fr;gap:28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px 26px;box-shadow:var(--sh-card);}
@media (min-width:1024px){ .subscribe{grid-template-columns:5fr 7fr;padding:44px 48px;gap:48px;align-items:center;} }
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;letter-spacing:.02em;color:var(--ink-2);margin-bottom:8px;}
.field input{width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-xs);background:var(--paper);color:var(--ink);transition:border-color .22s var(--ease),box-shadow .22s var(--ease);}
.field input:focus{outline:none;border-color:var(--jade-500);box-shadow:0 0 0 3px rgba(63,143,118,.18);}
.form-note{font-size:13px;color:var(--copper);margin-top:10px;}
.form-hint{font-size:13px;color:var(--ink-3);margin-top:12px;line-height:1.8;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--jade-900);color:#EDEAE2;margin-top:48px;padding:60px 0 26px;}
@media (min-width:1024px){ .site-footer{margin-top:88px;padding:72px 0 28px;} }
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:768px){ .footer-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;} }
.footer-col + .footer-col{border-top:1px solid rgba(246,244,239,.12);padding-top:28px;}
@media (min-width:1024px){ .footer-col + .footer-col{border-top:0;border-left:1px solid rgba(246,244,239,.12);padding-top:0;padding-left:40px;} }
.footer-brand{font-family:var(--serif);font-size:20px;color:#fff;margin-bottom:12px;}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(246,244,239,.66);max-width:34ch;}
.footer-title{font-size:13px;letter-spacing:.14em;color:var(--jade-300);margin-bottom:16px;font-family:var(--sans);font-weight:600;}
.footer-list li{margin-bottom:12px;}
.footer-list a{font-size:14px;color:rgba(246,244,239,.76);transition:color .22s var(--ease);}
.footer-list a:hover{color:#fff;border-bottom:1px solid var(--copper);padding-bottom:2px;}
.footer-contact li{font-size:14px;color:rgba(246,244,239,.76);margin-bottom:12px;line-height:1.8;}
.footer-bottom{margin-top:46px;padding-top:22px;border-top:1px solid rgba(246,244,239,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(246,244,239,.5);}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--jade-700);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-card);cursor:pointer;opacity:0;visibility:hidden;transition:all .24s var(--ease);z-index:50;}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-2px);color:var(--copper);}

/* roulang page: article */
:root{
  --jade-900:#12211C;
  --jade-700:#1F4D3F;
  --jade-500:#3F8F76;
  --jade-300:#8FD0B6;
  --copper:#C2703A;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --ink:#141A17;
  --ink-2:#5A6560;
  --ink-3:#8C948E;
  --radius-xl:28px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-soft:0 1px 2px rgba(20,26,23,.04), 0 12px 32px -12px rgba(20,26,23,.10);
  --shadow-lift:0 18px 44px -14px rgba(20,26,23,.18);
  --grad:linear-gradient(120deg,#1F4D3F 0%,#3F8F76 55%,#8FD0B6 100%);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:-0.01em;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(63,143,118,.35);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){ .container{padding:0 32px;} }
@media (min-width:1280px){ .container{padding:0;} }

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:var(--serif);font-size:15px;font-weight:700;
}
.brand-text{
  font-family:var(--serif);font-size:20px;font-weight:700;color:var(--jade-900);
  letter-spacing:.01em;
}
.brand-sub{
  display:block;font-family:var(--sans);font-size:11px;color:var(--ink-3);
  letter-spacing:.18em;line-height:1.2;margin-top:2px;
}
.nav-wrap{display:none;}
@media (min-width:1024px){
  .nav-wrap{display:block;}
}
.nav-links{display:flex;align-items:center;}
.nav-links li{display:flex;align-items:center;}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 16px;font-size:15px;color:var(--ink-2);
  transition:color .2s ease;
}
.nav-links a:hover{color:var(--jade-700);}
.nav-links a.active{color:var(--jade-900);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-2px;height:2px;
  background:var(--copper);border-radius:2px;
}
.nav-sep{width:1px;height:14px;background:var(--line);display:inline-block;}
.header-actions{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
  display:none;align-items:center;justify-content:center;color:var(--ink-2);
  background:rgba(255,255,255,.6);transition:all .2s ease;
}
@media (min-width:768px){ .icon-btn{display:flex;} }
.icon-btn:hover{border-color:var(--jade-500);color:var(--jade-700);background:#fff;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;padding:11px 22px;min-height:44px;
  transition:all .24s cubic-bezier(.2,.7,.3,1);
  white-space:nowrap;
}
.btn-primary{background:var(--jade-700);color:#fff;font-weight:600;}
.btn-primary:hover{background:var(--grad);transform:translateY(-1px);box-shadow:var(--shadow-lift);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1.5px solid var(--jade-700);color:var(--jade-700);background:transparent;font-weight:600;}
.btn-ghost:hover{background:rgba(31,77,63,.06);}
.btn-light{background:#fff;color:var(--jade-900);font-weight:600;}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--shadow-lift);}
.btn-outline-light{border:1.5px solid rgba(246,244,239,.45);color:#F6F4EF;font-weight:600;}
.btn-outline-light:hover{background:rgba(246,244,239,.12);}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}
.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;background:#fff;
}
@media (min-width:1024px){ .menu-toggle{display:none;} }
.menu-toggle span{display:block;width:18px;height:1.5px;background:var(--jade-900);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--jade-900);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

.mobile-menu{
  position:fixed;inset:0;z-index:70;background:var(--bg);
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity .24s ease, transform .24s ease;
  display:flex;flex-direction:column;padding:24px 20px 32px;overflow-y:auto;
}
.mobile-menu.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-menu-head{display:flex;align-items:center;justify-content:space-between;height:52px;}
.mobile-close{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
  font-size:20px;color:var(--ink-2);display:flex;align-items:center;justify-content:center;
}
.mobile-menu nav{margin-top:24px;}
.mobile-menu nav a{
  display:block;font-family:var(--serif);font-size:20px;color:var(--jade-900);
  padding:18px 4px;border-bottom:1px solid var(--line);
}
.mobile-menu nav a.active{color:var(--copper);}
.mobile-foot{
  margin-top:auto;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);line-height:2;
}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:24px 0 0;font-size:13px;color:var(--ink-3);letter-spacing:.02em;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--copper);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-3);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头 ============ */
.article-head{padding:40px 0 36px;border-bottom:1px solid var(--line);}
.article-head-inner{max-width:820px;margin:0 auto;text-align:center;}
.eyebrow{
  font-size:13px;letter-spacing:.18em;color:var(--copper);
  text-transform:uppercase;margin-bottom:18px;font-weight:600;
}
.article-title{
  font-size:clamp(30px,3.6vw,44px);line-height:1.22;color:var(--jade-900);
}
.article-lead{
  margin:20px auto 0;max-width:660px;font-size:17px;line-height:1.85;color:var(--ink-2);
}
.meta-row{
  margin-top:24px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;
  gap:10px;font-size:13px;color:var(--ink-3);letter-spacing:.02em;
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);opacity:.6;}
.meta-pill{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
  border-radius:999px;border:1px solid rgba(31,77,63,.22);
  background:rgba(31,77,63,.05);color:var(--jade-700);font-size:13px;
}

/* ============ 正文 ============ */
.article-main{padding:44px 0 0;}
.article-column{max-width:720px;margin:0 auto;}
.article-body{font-size:17px;line-height:1.85;color:var(--ink);}
.article-body p{margin:0 0 1.2em;}
.article-body h2{font-size:24px;line-height:1.45;margin:40px 0 16px;color:var(--jade-900);}
.article-body h3{font-size:20px;line-height:1.5;margin:28px 0 12px;color:var(--jade-900);}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--jade-900);}
.article-body strong{color:var(--jade-900);}
.article-body a{color:var(--jade-700);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--copper);text-decoration-color:var(--copper);}
.article-body ul{list-style:disc;padding-left:1.4em;margin:0 0 1.2em;}
.article-body ol{list-style:decimal;padding-left:1.4em;margin:0 0 1.2em;}
.article-body li{margin:.4em 0;}
.article-body ul li::marker{color:var(--jade-500);}
.article-body ol li::marker{color:var(--copper);}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--copper);
  background:var(--bg);border-radius:0 18px 18px 0;color:var(--ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:18px;margin:26px 0;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-body th{background:rgba(31,77,63,.04);font-weight:600;color:var(--jade-900);}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;
  background:rgba(31,77,63,.06);padding:2px 6px;border-radius:6px;color:var(--jade-700);
}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:48px 28px;text-align:center;background:rgba(255,255,255,.6);
}
.empty-state h2{font-size:22px;color:var(--jade-900);margin-bottom:12px;}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:20px;}

/* ============ 标签 ============ */
.tag-block{margin-top:40px;padding-top:28px;border-top:1px solid var(--line);}
.tag-label{font-size:13px;color:var(--ink-3);letter-spacing:.08em;margin-bottom:14px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-2);
  transition:all .2s ease;
}
.tag:hover{border-color:var(--jade-500);color:var(--jade-700);background:rgba(31,77,63,.04);}

/* ============ 深色 CTA ============ */
.cta-band{margin:64px 0 0;}
.cta-card{
  background:var(--jade-900);border-radius:var(--radius-xl);
  padding:40px;display:flex;flex-wrap:wrap;align-items:center;gap:28px;
  justify-content:space-between;position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(143,208,182,.22),transparent 68%);
}
.cta-copy{max-width:560px;position:relative;z-index:1;}
.cta-title{font-size:26px;line-height:1.35;color:#F6F4EF;}
.cta-desc{margin-top:12px;font-size:15px;color:rgba(246,244,239,.72);line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(143,208,182,.38);color:var(--jade-300);font-size:13px;
  letter-spacing:.02em;background:rgba(143,208,182,.08);
}

/* ============ 相关推荐 ============ */
.related{padding:72px 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;flex-wrap:wrap;
}
.section-title{font-size:26px;color:var(--jade-900);}
.section-sub{margin-top:8px;font-size:14px;color:var(--ink-3);}
.text-link{
  font-size:14px;color:var(--jade-700);border-bottom:1px solid transparent;
  padding-bottom:2px;transition:all .2s ease;
}
.text-link:hover{border-color:var(--copper);color:var(--copper);}
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){ .card-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .card-grid{grid-template-columns:repeat(3,1fr);} }
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  overflow:hidden;box-shadow:var(--shadow-soft);transition:all .26s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:#EDEAE2;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s cubic-bezier(.2,.7,.3,1);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.chip{
  align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(194,112,58,.10);color:var(--copper);font-size:12px;
  letter-spacing:.04em;
}
.card-title{font-size:18px;line-height:1.5;color:var(--jade-900);}
.card-title a:hover{color:var(--copper);}
.card-desc{font-size:14px;color:var(--ink-2);line-height:1.75;}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);
}
.card-meta .badge{
  height:26px;padding:0 10px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;font-size:12px;color:var(--ink-2);background:var(--bg);
}

/* ============ 返回入口 ============ */
.back-row{
  margin:56px 0 0;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.back-links{display:flex;flex-wrap:wrap;gap:24px;font-size:14px;}
.back-links a{color:var(--jade-700);border-bottom:1px solid transparent;transition:all .2s ease;}
.back-links a:hover{border-color:var(--copper);color:var(--copper);}

/* ============ 页脚 ============ */
.site-footer{margin-top:80px;background:var(--jade-900);color:#F6F4EF;padding:56px 0 24px;}
.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:1.4fr 1fr 1fr 1.2fr;gap:0;} }
.footer-col{padding:0;}
@media (min-width:1024px){
  .footer-col{padding:0 28px;}
  .footer-col:first-child{padding-left:0;}
  .footer-col:last-child{padding-right:0;}
  .footer-col + .footer-col{border-left:1px solid rgba(246,244,239,.14);}
}
.footer-brand{font-family:var(--serif);font-size:22px;font-weight:700;color:#F6F4EF;}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(246,244,239,.66);max-width:300px;}
.footer-title{font-size:14px;letter-spacing:.08em;color:rgba(246,244,239,.5);margin-bottom:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:rgba(246,244,239,.82);transition:color .2s ease;}
.footer-list a:hover{color:var(--jade-300);}
.footer-contact li{font-size:14px;color:rgba(246,244,239,.72);line-height:2;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(246,244,239,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(246,244,239,.55);
}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft);
  display:flex;align-items:center;justify-content:center;color:var(--jade-700);
  opacity:0;pointer-events:none;transition:all .24s ease;z-index:50;font-size:16px;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{color:#fff;background:var(--jade-700);border-color:var(--jade-700);}

/* roulang page: category1 */
:root{
    --jade-900:#12211C;
    --jade-800:#1F4D3F;
    --jade-600:#3F8F76;
    --jade-300:#8FD0B6;
    --copper:#C2703A;
    --bg:#F6F4EF;
    --surface:#FFFFFF;
    --line:#E5E0D6;
    --ink:#141A17;
    --ink-2:#5A6560;
    --ink-3:#8C948E;
    --radius-lg:28px;
    --radius-md:18px;
    --radius-sm:12px;
    --shadow-1:0 1px 2px rgba(20,26,23,.04), 0 12px 32px -12px rgba(20,26,23,.10);
    --shadow-2:0 18px 44px -14px rgba(20,26,23,.18);
    --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
    --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:var(--font-sans);
    font-size:16.5px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;margin:0;line-height:1.3;}
  h1{font-size:clamp(34px,4.4vw,56px);line-height:1.15;}
  h2{font-size:30px;}
  h3{font-size:20px;}
  :focus-visible{outline:none;box-shadow:0 0 0 3px rgba(63,143,118,.35);border-radius:8px;}

  body .container{
    width:100%;
    max-width:1180px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){
    body .container{padding-left:32px;padding-right:32px;}
  }
  @media (min-width:1280px){
    body .container{padding-left:0;padding-right:0;}
  }

  .skip-link{
    position:absolute;left:-9999px;top:0;z-index:200;
    background:var(--jade-800);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;
  }
  .skip-link:focus{left:0;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(246,244,239,.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    min-height:76px;
  }
  .brand{
    display:inline-flex;align-items:center;gap:8px;
    font-family:var(--font-serif);font-size:21px;font-weight:700;letter-spacing:-.01em;
    color:var(--jade-900);white-space:nowrap;
  }
  .brand::after{
    content:"";width:7px;height:7px;border-radius:50%;background:var(--copper);display:inline-block;
  }
  .nav-links{display:flex;align-items:center;}
  .nav-links li{display:flex;align-items:center;}
  .nav-sep{width:1px;height:14px;background:var(--line);display:inline-block;flex:0 0 1px;}
  .nav-links a{
    position:relative;display:inline-flex;align-items:center;min-height:44px;
    padding:0 16px;font-size:15px;color:var(--ink-2);
    transition:color .2s ease;
  }
  .nav-links a:hover{color:var(--jade-800);}
  .nav-links a.active{color:var(--jade-800);font-weight:600;}
  .nav-links a.active::after{
    content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;
    background:var(--copper);border-radius:2px;
  }
  .header-actions{display:flex;align-items:center;gap:12px;}
  .menu-toggle{
    display:none;width:44px;height:44px;border-radius:12px;
    align-items:center;justify-content:center;flex-direction:column;gap:5px;
    border:1px solid var(--line);background:rgba(255,255,255,.6);
  }
  .menu-toggle span{display:block;width:18px;height:1.5px;background:var(--jade-900);transition:transform .25s ease,opacity .25s ease;}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

  .mobile-menu{
    display:none;
    border-top:1px solid var(--line);
    background:rgba(246,244,239,.98);
    padding:8px 20px 24px;
  }
  .mobile-menu.open{display:block;}
  .mobile-menu li{border-bottom:1px solid var(--line);}
  .mobile-menu a{
    display:flex;align-items:center;min-height:56px;
    font-family:var(--font-serif);font-size:20px;color:var(--ink);
  }
  .mobile-menu a.active{color:var(--jade-800);}
  .mobile-menu-foot{
    padding-top:18px;font-size:13px;color:var(--ink-3);letter-spacing:.02em;
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 24px;border-radius:999px;
    font-size:15px;font-weight:600;letter-spacing:.01em;
    transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,background .24s ease,color .24s ease,border-color .24s ease;
    border:1.5px solid transparent;cursor:pointer;
  }
  .btn-primary{
    background:var(--jade-800);color:#F6F4EF;
    box-shadow:var(--shadow-1);
  }
  .btn-primary:hover{
    background:linear-gradient(120deg,#1F4D3F 0%,#3F8F76 100%);
    transform:translateY(-1px);
    box-shadow:var(--shadow-2);
  }
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{
    border-color:rgba(31,77,63,.35);color:var(--jade-800);background:transparent;
  }
  .btn-outline:hover{background:rgba(31,77,63,.06);transform:translateY(-1px);}
  .btn-outline:active{transform:translateY(0);}
  .btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
  .btn-on-dark{
    background:var(--jade-300);color:#12211C;
  }
  .btn-on-dark:hover{
    background:#A8DCC6;transform:translateY(-1px);box-shadow:0 14px 30px -12px rgba(0,0,0,.5);
  }
  .btn-ghost-on-dark{
    border-color:rgba(246,244,239,.4);color:#F6F4EF;background:transparent;
  }
  .btn-ghost-on-dark:hover{background:rgba(246,244,239,.1);transform:translateY(-1px);}

  /* ---------- 通用 ---------- */
  .eyebrow{
    display:inline-block;font-size:13px;letter-spacing:.18em;color:var(--copper);
    font-weight:600;text-transform:none;
  }
  .section{padding:96px 0;}
  .section-tight{padding:56px 0;}
  .section-tint{background:linear-gradient(180deg,rgba(31,77,63,.035),rgba(143,208,182,.05));}
  .section-head{max-width:720px;margin-bottom:44px;}
  .section-head h2{margin-top:14px;}
  .section-sub{margin-top:14px;color:var(--ink-2);font-size:16px;}

  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    background:rgba(63,143,118,.10);color:var(--jade-800);
    border:1px solid rgba(63,143,118,.22);font-size:12.5px;letter-spacing:.02em;
  }
  .stat-badge{
    display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:999px;
    background:rgba(255,255,255,.86);border:1px solid var(--line);
    font-size:13px;color:var(--ink-2);
  }
  .stat-badge strong{font-family:var(--font-serif);font-size:15px;color:var(--jade-800);font-weight:700;}
  .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);display:inline-block;}
  .meta{
    display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);letter-spacing:.02em;
  }

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    background:linear-gradient(120deg,rgba(31,77,63,.07) 0%,rgba(143,208,182,.13) 48%,rgba(194,112,58,.06) 100%);
    border-bottom:1px solid var(--line);
    padding:72px 0 64px;
  }
  .hero-grid{
    display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:center;
  }
  .hero h1{margin-top:18px;}
  .hero-sub{
    margin-top:20px;max-width:560px;font-size:17px;color:var(--ink-2);
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
  .stat-row{
    display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:40px;
    border-top:1px solid rgba(31,77,63,.14);padding-top:22px;
  }
  .stat{
    padding-right:28px;margin-right:28px;border-right:1px solid rgba(31,77,63,.14);
  }
  .stat:last-child{border-right:0;margin-right:0;padding-right:0;}
  .stat-num{
    display:block;font-family:var(--font-serif);font-size:30px;line-height:1.1;color:var(--jade-800);
  }
  .stat-label{display:block;margin-top:4px;font-size:13px;color:var(--ink-3);letter-spacing:.02em;}

  .hero-media{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-1);aspect-ratio:5/4;
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;}
  .hero-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(31,77,63,.28),rgba(31,77,63,0) 62%);
  }
  .media-badge{
    position:absolute;left:20px;top:20px;z-index:2;
    display:inline-flex;align-items:center;gap:6px;
    height:30px;padding:0 14px;border-radius:999px;
    background:rgba(18,33,28,.72);color:#F6F4EF;font-size:13px;
    border:1px solid rgba(246,244,239,.28);
  }
  .media-badge strong{font-family:var(--font-serif);color:var(--jade-300);}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    padding:20px 0 0;font-size:13px;color:var(--ink-3);letter-spacing:.02em;
  }
  .breadcrumb a{color:var(--ink-3);transition:color .2s;}
  .breadcrumb a:hover{color:var(--copper);}
  .breadcrumb span.sep{margin:0 8px;color:#C9C3B7;}

  /* ---------- 目录 ---------- */
  .toc-layout{display:grid;grid-template-columns:290px 1fr;gap:44px;align-items:start;}
  .toc-index{position:sticky;top:104px;}
  .toc-index li{border-bottom:1px solid var(--line);}
  .toc-index li:first-child{border-top:1px solid var(--line);}
  .toc-index a{
    position:relative;display:flex;align-items:baseline;gap:14px;
    padding:16px 12px 16px 14px;transition:background .22s ease,padding .22s ease;
  }
  .toc-index a::before{
    content:"";position:absolute;left:0;top:12px;bottom:12px;width:0;
    background:var(--copper);border-radius:2px;transition:width .22s ease;
  }
  .toc-index a:hover{background:rgba(255,255,255,.75);padding-left:22px;}
  .toc-index a:hover::before{width:4px;}
  .toc-num{font-family:var(--font-serif);font-size:14px;color:var(--copper);letter-spacing:.06em;}
  .toc-phrase{font-size:17px;color:var(--ink);}

  .card-grid-two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .entry-card{
    display:flex;flex-direction:column;
    background:var(--surface);border:1px solid var(--line);border-radius:24px;overflow:hidden;
    box-shadow:var(--shadow-1);
    transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s ease;
  }
  .entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .entry-card .thumb{aspect-ratio:16/10;overflow:hidden;background:#EDE9E0;}
  .entry-card .thumb img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .24s cubic-bezier(.2,.7,.3,1);
  }
  .entry-card:hover .thumb img{transform:scale(1.03);}
  .entry-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1;}
  .entry-body h3{font-size:19px;line-height:1.4;}
  .entry-body p{font-size:15px;color:var(--ink-2);}
  .entry-body .meta{margin-top:auto;padding-top:8px;}

  .fine-list{margin-top:48px;border-top:1px solid var(--line);}
  .fine-list li{
    display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;
    padding:16px 0;border-bottom:1px solid var(--line);
  }
  .fine-list .fine-title{font-family:var(--font-serif);font-size:17px;color:var(--ink);}
  .fine-list .fine-note{font-size:14px;color:var(--ink-2);}
  .fine-list a.fine-title{transition:color .2s;}
  .fine-list a.fine-title:hover{color:var(--copper);}

  /* ---------- 对照条 ---------- */
  .compare-list{border-top:1px solid var(--line);}
  .compare-row{
    display:grid;grid-template-columns:200px 1fr;gap:32px;align-items:start;
    padding:28px 0;border-bottom:1px solid var(--line);
  }
  .compare-label{
    font-family:var(--font-serif);font-size:19px;color:var(--jade-800);
    display:flex;align-items:center;gap:10px;
  }
  .compare-label::before{
    content:"";width:8px;height:8px;border-radius:50%;background:var(--copper);flex:0 0 8px;
  }
  .compare-body p{font-size:15.5px;color:var(--ink-2);}
  .compare-body p + p{margin-top:6px;}
  .compare-body strong{color:var(--ink);}

  /* ---------- 流程 ---------- */
  .step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
  .step{
    padding:0 28px;border-left:1px solid var(--line);
  }
  .step:first-child{border-left:0;padding-left:0;}
  .step:last-child{padding-right:0;}
  .step-num{
    font-family:var(--font-serif);font-size:30px;color:var(--copper);line-height:1;
  }
  .step h3{margin-top:16px;font-size:19px;}
  .step p{margin-top:10px;font-size:15px;color:var(--ink-2);}

  /* ---------- 场景与数据 ---------- */
  .scene-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
  .scene-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .scene-tags span{
    display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);background:var(--surface);font-size:14px;color:var(--ink-2);
    transition:border-color .2s ease,color .2s ease;
  }
  .scene-tags span:hover{border-color:rgba(194,112,58,.5);color:var(--copper);}
  .data-panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:32px;box-shadow:var(--shadow-1);
  }
  .data-panel h3{font-size:19px;}
  .data-list{margin-top:20px;}
  .data-list li{
    display:flex;align-items:baseline;justify-content:space-between;gap:16px;
    padding:14px 0;border-bottom:1px solid var(--line);
  }
  .data-list li:last-child{border-bottom:0;padding-bottom:0;}
  .data-list .k{font-size:15px;color:var(--ink-2);}
  .data-list .v{font-family:var(--font-serif);font-size:20px;color:var(--jade-800);}

  /* ---------- FAQ ---------- */
  .faq-wrap{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:24px 4px;font-size:17px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--jade-800);}
  .faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--copper);border-radius:2px;
    transition:transform .25s ease,opacity .25s ease;
  }
  .faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px;}
  .faq-icon::after{top:0;left:7.25px;height:16px;width:1.5px;}
  .faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
  .faq-body{
    padding:0 4px 26px;max-width:820px;font-size:15px;color:var(--ink-2);
  }

  /* ---------- CTA ---------- */
  .cta-card{
    position:relative;overflow:hidden;
    background:var(--jade-900);color:#F6F4EF;
    border-radius:var(--radius-lg);padding:48px;
    display:flex;align-items:center;justify-content:space-between;gap:40px;
  }
  .cta-card::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(63,143,118,.34),rgba(18,33,28,0) 62%);
  }
  .cta-card > *{position:relative;z-index:1;}
  .cta-card h2{color:#F6F4EF;font-size:26px;max-width:520px;}
  .cta-card p{margin-top:12px;font-size:15px;color:rgba(246,244,239,.76);max-width:520px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
  .cta-badge{
    display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;
    border:1px solid rgba(143,208,182,.45);color:var(--jade-300);font-size:13px;margin-bottom:18px;
  }
  .cta-line{width:56px;height:1px;background:rgba(246,244,239,.28);margin-top:22px;}

  /* ---------- 相关分类 ---------- */
  .related{padding:72px 0 88px;}
  .rel-links{margin-top:26px;border-top:1px solid var(--line);}
  .rel-item{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:18px 4px;border-bottom:1px solid var(--line);
  }
  .rel-item a{
    font-family:var(--font-serif);font-size:18px;color:var(--ink);
    border-bottom:2px solid transparent;padding-bottom:2px;
    transition:color .2s ease,border-color .2s ease;
  }
  .rel-item a:hover{color:var(--copper);border-bottom-color:var(--copper);}
  .rel-item .rel-note{font-size:14px;color:var(--ink-3);}
  .rel-item .current{
    font-size:12.5px;color:var(--copper);border:1px solid rgba(194,112,58,.4);
    border-radius:999px;padding:2px 12px;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--jade-900);color:#EDE9E0;padding:64px 0 28px;}
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0;
  }
  .footer-col{padding:0 28px;border-left:1px solid rgba(246,244,239,.12);}
  .footer-col:first-child{border-left:0;padding-left:0;}
  .footer-col:last-child{padding-right:0;}
  .footer-brand{
    font-family:var(--font-serif);font-size:22px;font-weight:700;color:#F6F4EF;
  }
  .footer-desc{margin-top:14px;font-size:14px;color:rgba(246,244,239,.68);max-width:300px;}
  .footer-title{font-size:14px;letter-spacing:.06em;color:var(--jade-300);margin-bottom:16px;}
  .footer-list li{margin-bottom:10px;}
  .footer-list a{
    font-size:14px;color:rgba(246,244,239,.78);transition:color .2s ease;
  }
  .footer-list a:hover{color:#F6F4EF;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--copper);text-decoration-thickness:2px;}
  .footer-contact li{font-size:14px;color:rgba(246,244,239,.72);margin-bottom:10px;}
  .footer-bottom{
    margin-top:48px;padding-top:20px;border-top:1px solid rgba(246,244,239,.12);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:rgba(246,244,239,.55);letter-spacing:.02em;
  }

  /* ---------- 回到顶部 ---------- */
  .to-top{
    position:fixed;right:24px;bottom:24px;z-index:70;
    width:40px;height:40px;border-radius:50%;
    display:inline-flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.92);border:1px solid var(--line);
    color:var(--jade-800);box-shadow:var(--shadow-1);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .25s ease;
  }
  .to-top.show{opacity:1;visibility:visible;}
  .to-top:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .nav-links a{padding:0 12px;}
    .header-cta{display:none;}
  }
  @media (max-width:1023px){
    .nav-links{display:none;}
    .menu-toggle{display:inline-flex;}
    .hero{padding:56px 0 48px;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .toc-layout{grid-template-columns:1fr;gap:28px;}
    .toc-index{position:static;}
    .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0;}
    .step:nth-child(3){border-left:0;padding-left:0;}
    .scene-wrap{grid-template-columns:1fr;gap:32px;}
    .section{padding:72px 0;}
  }
  @media (max-width:767px){
    .header-inner{min-height:68px;}
    .brand{font-size:19px;}
    .card-grid-two{grid-template-columns:1fr;}
    .compare-row{grid-template-columns:1fr;gap:12px;}
    .compare-label{font-size:17px;}
    .cta-card{flex-direction:column;align-items:flex-start;padding:32px 24px;border-radius:24px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0;}
    .footer-col{padding:0 20px;}
    .footer-col:nth-child(3){border-left:0;padding-left:0;}
    .footer-col:nth-child(1),.footer-col:nth-child(2){border-bottom:1px solid rgba(246,244,239,.12);padding-bottom:24px;}
    .footer-brand{font-size:20px;}
  }
  @media (max-width:639px){
    body{font-size:16px;}
    .section{padding:56px 0;}
    .section-head{margin-bottom:32px;}
    h2{font-size:24px;}
    .hero{padding:44px 0 40px;}
    .hero-actions .btn{width:100%;}
    .stat{padding-right:20px;margin-right:20px;}
    .stat-num{font-size:26px;}
    .step-grid{grid-template-columns:1fr;gap:0;}
    .step{border-left:0;border-top:1px solid var(--line);padding:24px 0;}
    .step:first-child{border-top:0;padding-top:0;}
    .step:last-child{padding-bottom:0;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-col{border-left:0;padding:0 0 24px;}
    .footer-col:last-child{padding-bottom:0;}
    .to-top{right:16px;bottom:16px;}
  }

/* roulang page: category2 */
:root{
    --jade-900:#12211C;
    --jade-700:#1F4D3F;
    --jade-500:#3F8F76;
    --jade-300:#8FD0B6;
    --copper:#C2703A;
    --bg:#F6F4EF;
    --card:#FFFFFF;
    --line:#E5E0D6;
    --ink:#141A17;
    --ink-2:#5A6560;
    --ink-3:#8C948E;
    --r-lg:28px;
    --r-md:18px;
    --r-sm:12px;
    --sh:0 1px 2px rgba(20,26,23,.04), 0 12px 32px -12px rgba(20,26,23,.10);
    --sh-h:0 18px 44px -14px rgba(20,26,23,.18);
    --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
    --font-ui:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  html body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:var(--font-ui);
    font-size:16.5px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  ul,ol{list-style:none;margin:0;padding:0}
  p{margin:0}
  :focus-visible{outline:3px solid rgba(63,143,118,.35);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}
  @media (min-width:1280px){.container{padding:0}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:70;
    background:rgba(246,244,239,.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
  .logo{
    font-family:var(--font-serif);font-weight:700;font-size:22px;letter-spacing:-.01em;
    color:var(--jade-700);white-space:nowrap;display:inline-flex;align-items:center;gap:10px;
    min-height:44px;
  }
  .logo::before{
    content:"";width:10px;height:10px;border-radius:50%;
    background:linear-gradient(120deg,var(--jade-500),var(--jade-300));
    box-shadow:0 0 0 3px rgba(63,143,118,.12);
  }
  .nav-links{display:flex;align-items:center}
  .nav-links li{display:flex;align-items:center}
  .nav-links a{
    position:relative;display:inline-flex;align-items:center;height:76px;padding:0 16px;
    font-size:15px;color:var(--ink-2);transition:color .22s ease;
  }
  .nav-links a:hover{color:var(--jade-700)}
  .nav-links a.active{color:var(--jade-700);font-weight:500}
  .nav-links a.active::after{
    content:"";position:absolute;left:16px;right:16px;bottom:20px;height:2px;
    background:var(--copper);border-radius:2px;
  }
  .nav-sep{display:inline-block;width:1px;height:14px;background:var(--line)}
  .header-actions{display:flex;align-items:center;gap:12px}
  .icon-btn{
    width:44px;height:44px;display:grid;place-items:center;border-radius:999px;
    border:1px solid transparent;color:var(--ink-2);
    transition:background .22s,color .22s,border-color .22s;
  }
  .icon-btn:hover{background:#fff;border-color:var(--line);color:var(--jade-700)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:500;
    border:1.5px solid transparent;white-space:nowrap;
    transition:transform .22s cubic-bezier(.2,.7,.3,1),background .22s,box-shadow .22s,color .22s,border-color .22s;
  }
  .btn-primary{background:var(--jade-700);color:#fff}
  .btn-primary:hover{
    background-image:linear-gradient(120deg,#1F4D3F,#3F8F76);
    transform:translateY(-1px);
    box-shadow:0 12px 26px -12px rgba(31,77,63,.55);
  }
  .btn-primary:active{transform:translateY(0);box-shadow:none}
  .btn-ghost{border-color:rgba(31,77,63,.32);color:var(--jade-700)}
  .btn-ghost:hover{background:rgba(31,77,63,.06);border-color:rgba(31,77,63,.5)}
  .btn-light{background:#F6F4EF;color:var(--jade-900)}
  .btn-light:hover{background:#fff;transform:translateY(-1px);box-shadow:0 14px 30px -14px rgba(0,0,0,.5)}
  .btn-outline-light{border-color:rgba(246,244,239,.42);color:#F6F4EF}
  .btn-outline-light:hover{background:rgba(246,244,239,.12)}
  .btn-sm{min-height:38px;padding:0 18px;font-size:14px}
  .btn-lg{min-height:50px;padding:0 28px;font-size:15.5px}

  .menu-toggle{display:none;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:#fff;place-items:center;padding:0}
  .menu-toggle span{display:block;width:18px;height:1.6px;background:var(--jade-700);margin:3px auto;border-radius:2px;transition:transform .24s,opacity .24s}
  .mobile-menu{
    position:fixed;left:0;right:0;top:76px;bottom:0;z-index:65;
    background:var(--bg);display:none;overflow-y:auto;padding:8px 0 40px;
    border-top:1px solid var(--line);
  }
  .mobile-menu.open{display:block}
  .mobile-links li{border-bottom:1px solid var(--line)}
  .mobile-links a{
    display:flex;align-items:center;justify-content:space-between;
    padding:20px 4px;font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--ink);
  }
  .mobile-links a.active{color:var(--jade-700)}
  .mobile-links a::after{content:"›";font-family:var(--font-ui);font-size:20px;color:var(--ink-3)}
  .mobile-foot{margin-top:28px;font-size:13px;color:var(--ink-3);letter-spacing:.02em;line-height:2}

  @media (max-width:1023px){
    .site-header nav[aria-label="主导航"]{display:none}
    .menu-toggle{display:grid}
    .header-actions .btn-primary{display:none}
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{padding:22px 0 0;font-size:13px;letter-spacing:.02em;color:var(--ink-3)}
  .breadcrumb a{color:var(--ink-2);transition:color .2s}
  .breadcrumb a:hover{color:var(--copper)}
  .crumb-sep{margin:0 8px;color:#C9C3B7}

  /* ---------- Hero 宽幅封面 ---------- */
  .hero-wrap{padding:20px 0 0}
  .cover{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    border:1px solid var(--line);min-height:320px;display:flex;align-items:center;
    box-shadow:var(--sh);
  }
  .cover-bg{
    position:absolute;inset:0;
    background-image:linear-gradient(102deg,rgba(18,33,28,.90) 6%,rgba(18,33,28,.62) 48%,rgba(18,33,28,.30) 100%),
                     url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
  }
  .cover::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(63,143,118,.22),rgba(194,112,58,.10));
    mix-blend-mode:screen;pointer-events:none;
  }
  .cover-inner{position:relative;z-index:2;padding:56px 64px;color:#F6F4EF;max-width:720px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;letter-spacing:.18em;color:#E4A879;text-transform:none;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:#E4A879;display:inline-block}
  .hero-title{
    font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;
    font-size:clamp(34px,4.4vw,56px);line-height:1.15;margin:16px 0 14px;color:#fff;
  }
  .hero-sub{font-size:17px;line-height:1.85;color:rgba(246,244,239,.84);max-width:560px}
  .hero-actions{margin-top:28px}
  .hero-badges{
    display:flex;flex-wrap:wrap;margin-top:34px;padding-top:22px;
    border-top:1px solid rgba(246,244,239,.18);
  }
  .hero-badge{padding-right:26px;margin-right:26px;border-right:1px solid rgba(246,244,239,.18)}
  .hero-badge:last-child{border-right:0;margin-right:0;padding-right:0}
  .hero-badge b{display:block;font-family:var(--font-serif);font-size:30px;line-height:1.25;font-weight:700;color:#fff}
  .hero-badge span{font-size:13px;color:rgba(246,244,239,.68);letter-spacing:.02em}
  @media (max-width:640px){
    .cover-inner{padding:36px 22px}
    .hero-badges{gap:18px 0}
    .hero-badge{padding-right:18px;margin-right:18px}
    .hero-badge b{font-size:24px}
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .section-head{max-width:660px;margin-bottom:36px}
  .section-kicker{font-size:12.5px;letter-spacing:.18em;color:var(--copper)}
  .section-title{
    font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;
    font-size:clamp(24px,2.6vw,30px);line-height:1.35;margin:12px 0 12px;color:var(--ink);
  }
  .section-desc{font-size:16px;color:var(--ink-2);line-height:1.85}

  /* ---------- 双列大圆角卡 ---------- */
  .feature-grid{display:grid;grid-template-columns:1fr;gap:22px}
  @media (min-width:1000px){.feature-grid{grid-template-columns:repeat(2,1fr);gap:28px}}
  .feature-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
    overflow:hidden;box-shadow:var(--sh);
    transition:box-shadow .28s cubic-bezier(.2,.7,.3,1),transform .28s cubic-bezier(.2,.7,.3,1);
    display:flex;flex-direction:column;
  }
  .feature-card:hover{box-shadow:var(--sh-h);transform:translateY(-2px)}
  .feature-media{height:158px;overflow:hidden;background:#EDEAE2;position:relative}
  .feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s cubic-bezier(.2,.7,.3,1)}
  .feature-card:hover .feature-media img{transform:scale(1.03)}
  .feature-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(18,33,28,0) 55%,rgba(18,33,28,.22) 100%);
  }
  .feature-body{padding:26px 28px 30px;display:flex;flex-direction:column;flex:1}
  .feature-index{font-family:var(--font-serif);font-size:14px;color:var(--copper);letter-spacing:.02em}
  .feature-title{
    font-family:var(--font-serif);font-weight:700;font-size:20px;letter-spacing:-.01em;
    margin:8px 0 10px;line-height:1.4;
  }
  .feature-text{font-size:15.5px;color:var(--ink-2);line-height:1.85}
  .feature-points{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:grid;gap:8px}
  .feature-points li{position:relative;padding-left:16px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
  .feature-points li::before{
    content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:50%;
    background:var(--jade-300);
  }
  .feature-foot{margin-top:22px;display:flex;flex-wrap:wrap;gap:8px}

  .badge{
    display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
    border:1px solid var(--line);background:#FBF9F5;font-size:12.5px;color:var(--ink-2);letter-spacing:.02em;
  }
  .badge b{font-family:var(--font-serif);font-size:15px;font-weight:700;color:var(--jade-700)}
  .badge-copper{border-color:rgba(194,112,58,.32);color:var(--copper);background:rgba(194,112,58,.06)}
  .badge-copper b{color:var(--copper)}

  /* ---------- 流程 ---------- */
  .flow{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh);overflow:hidden}
  .steps{display:grid;grid-template-columns:1fr}
  @media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
  .step{padding:30px 26px;border-bottom:1px solid var(--line);position:relative}
  @media (min-width:768px){
    .step{border-right:1px solid var(--line)}
    .step:nth-child(2n){border-right:0}
  }
  @media (min-width:1024px){
    .step{border-right:1px solid var(--line);border-bottom:0}
    .step:nth-child(2n){border-right:1px solid var(--line)}
    .step:last-child{border-right:0}
  }
  .step-num{
    font-family:var(--font-serif);font-weight:700;font-size:15px;color:var(--copper);
    letter-spacing:.02em;
  }
  .step-title{font-family:var(--font-serif);font-weight:700;font-size:18px;margin:10px 0 8px;line-height:1.45}
  .step-text{font-size:14.5px;color:var(--ink-2);line-height:1.8}

  /* ---------- 三行要点条 ---------- */
  .keyline{border-top:1px solid var(--line);margin-top:8px}
  .keyline-row{
    display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start;
    padding:24px 6px;border-bottom:1px solid var(--line);
    transition:background .24s ease,padding-left .24s ease;
  }
  @media (min-width:768px){
    .keyline-row{grid-template-columns:64px 1fr auto;gap:24px;align-items:center;padding:26px 10px}
  }
  .keyline-row:hover{background:#FBF9F5;padding-left:16px}
  .keyline-num{font-family:var(--font-serif);font-weight:700;font-size:15px;color:var(--copper);letter-spacing:.02em}
  .keyline-body h3{font-family:var(--font-serif);font-weight:700;font-size:19px;line-height:1.45;margin:0 0 6px}
  .keyline-body p{font-size:14.8px;color:var(--ink-2);line-height:1.8}
  .keyline-arrow{display:none;color:var(--ink-3);transition:transform .24s ease,color .24s ease}
  @media (min-width:768px){.keyline-arrow{display:block}}
  .keyline-row:hover .keyline-arrow{transform:translateX(4px);color:var(--copper)}

  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid var(--line);max-width:860px}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:20px;
    padding:22px 4px;font-size:17px;font-weight:500;color:var(--ink);line-height:1.7;
    transition:color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--jade-700)}
  .faq-item summary::after{
    content:"+";margin-left:auto;flex:0 0 auto;font-size:22px;line-height:1;color:var(--copper);
    transition:transform .26s cubic-bezier(.2,.7,.3,1);font-family:var(--font-ui);
  }
  .faq-item[open] summary::after{transform:rotate(45deg)}
  .faq-answer{padding:0 44px 24px 4px;font-size:15px;color:var(--ink-2);line-height:1.85}
  @media (max-width:640px){.faq-answer{padding-right:8px}}

  /* ---------- CTA ---------- */
  .cta-card{
    position:relative;overflow:hidden;background:var(--jade-900);color:#F6F4EF;
    border-radius:var(--r-lg);padding:44px 40px;
    display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
  }
  @media (min-width:900px){.cta-card{grid-template-columns:1fr auto;padding:52px 56px;gap:44px}}
  .cta-card::after{
    content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
    background:radial-gradient(circle,rgba(63,143,118,.34),rgba(63,143,118,0) 68%);pointer-events:none;
  }
  .cta-title{font-family:var(--font-serif);font-weight:700;font-size:clamp(22px,2.4vw,28px);line-height:1.4;margin:14px 0 10px;color:#fff}
  .cta-text{font-size:15.5px;color:rgba(246,244,239,.76);line-height:1.85;max-width:520px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2}
  .cta-divider{width:64px;height:1px;background:rgba(246,244,239,.28);margin-top:24px}

  /* ---------- 相关分类 ---------- */
  .related{margin-top:8px}
  .related-links{border-top:1px solid var(--line);max-width:860px}
  .related-links a{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink);
    transition:color .22s ease,padding-left .22s ease;
  }
  .related-links a:hover{color:var(--copper);padding-left:12px;text-decoration:underline;text-decoration-color:var(--copper);text-underline-offset:4px;text-decoration-thickness:2px}
  .related-links span.meta{font-size:13px;color:var(--ink-3);letter-spacing:.02em}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--jade-900);color:#E9E5DC;padding:64px 0 26px;margin-top:80px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:0}
  @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}}
  .footer-col{padding:22px 0;border-bottom:1px solid rgba(246,244,239,.12)}
  @media (min-width:1024px){
    .footer-col{padding:0 28px;border-bottom:0;border-left:1px solid rgba(246,244,239,.12)}
    .footer-col:first-child{padding-left:0;border-left:0}
    .footer-col:last-child{padding-right:0}
  }
  .footer-brand{font-family:var(--font-serif);font-weight:700;font-size:22px;color:#fff;letter-spacing:-.01em;display:inline-flex;align-items:center;gap:10px}
  .footer-brand::before{
    content:"";width:10px;height:10px;border-radius:50%;
    background:linear-gradient(120deg,var(--jade-500),var(--jade-300));
  }
  .footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(233,229,220,.68);max-width:340px}
  .footer-title{font-family:var(--font-serif);font-weight:700;font-size:15px;color:#fff;margin-bottom:14px;letter-spacing:.02em}
  .footer-list li{margin-bottom:10px}
  .footer-list a{font-size:14px;color:rgba(233,229,220,.72);transition:color .2s ease}
  .footer-list a:hover{color:var(--copper)}
  .footer-contact li{font-size:14px;color:rgba(233,229,220,.72);line-height:1.9;margin-bottom:8px}
  .footer-bottom{
    margin-top:36px;padding-top:18px;border-top:1px solid rgba(246,244,239,.14);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:rgba(233,229,220,.58);letter-spacing:.02em;
  }

  /* ---------- 回到顶部 ---------- */
  .to-top{
    position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:999px;
    background:#fff;border:1px solid var(--line);color:var(--jade-700);
    display:grid;place-items:center;box-shadow:var(--sh);z-index:50;
    transition:transform .24s ease,box-shadow .24s ease;
  }
  .to-top:hover{transform:translateY(-2px);box-shadow:var(--sh-h)}
  .to-top svg{width:16px;height:16px}

/* roulang page: category3 */
:root{
    --jade-900:#12211C; --jade-700:#1F4D3F; --jade-500:#3F8F76; --jade-300:#8FD0B6;
    --copper:#C2703A;
    --paper:#F6F4EF; --paper-soft:#FBFAF6; --card:#FFFFFF; --line:#E5E0D6;
    --ink:#141A17; --ink-2:#5A6560; --ink-3:#8C948E;
    --r-lg:28px; --r-md:18px; --r-sm:12px;
    --shadow:0 1px 2px rgba(20,26,23,.04), 0 12px 32px -12px rgba(20,26,23,.10);
    --shadow-h:0 18px 44px -14px rgba(20,26,23,.18);
    --grad:linear-gradient(120deg,#1F4D3F 0%,#3F8F76 52%,#8FD0B6 100%);
    --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
    --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;background:var(--paper);color:var(--ink);
    font-family:var(--sans);font-size:16.5px;line-height:1.85;
    -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.01em;line-height:1.25;color:var(--ink)}
  h1{font-size:clamp(34px,4.4vw,56px);line-height:1.15}
  h2{font-size:30px}
  h3{font-size:20px}
  p{margin:0}
  :focus-visible{outline:3px solid rgba(63,143,118,.35);outline-offset:2px;border-radius:6px}
  .container{max-width:1180px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 32px} }
  @media (min-width:1280px){ .container{padding:0} }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,244,239,.86);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
  .logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:21px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
  .logo-mark{width:30px;height:30px;border-radius:9px;background:var(--grad);box-shadow:0 6px 16px -8px rgba(31,77,63,.7);position:relative;flex:0 0 auto}
  .logo-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;border:1.5px solid rgba(255,255,255,.75)}
  .nav-links{display:flex;align-items:center}
  .nav-links li{display:flex;align-items:center}
  .nav-links a{position:relative;display:inline-block;padding:10px 0;font-size:15px;color:var(--ink-2)}
  .nav-links a:hover{color:var(--ink)}
  .nav-links a.active{color:var(--jade-700);font-weight:500}
  .nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--copper)}
  .nav-sep{display:block;width:1px;height:14px;background:var(--line);margin:0 16px}
  .header-actions{display:flex;align-items:center;gap:12px}
  .icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:999px;color:var(--ink-2);border:1px solid transparent}
  .icon-btn:hover{color:var(--jade-700);border-color:var(--line);background:rgba(255,255,255,.7)}
  .menu-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:var(--ink)}
  .menu-toggle svg{width:20px;height:20px}
  .nav-mobile-foot{display:none}

  @media (max-width:1023px){
    .nav-links{
      display:none;position:fixed;left:0;right:0;top:76px;bottom:0;z-index:55;
      flex-direction:column;align-items:stretch;background:var(--paper);
      padding:24px 24px 40px;overflow-y:auto;
    }
    .site-header.nav-open .nav-links{display:flex}
    .nav-links li{display:block;border-bottom:1px solid var(--line)}
    .nav-links li:first-child{border-top:1px solid var(--line)}
    .nav-links a{display:block;padding:18px 0;font-family:var(--serif);font-size:20px;color:var(--ink)}
    .nav-links a.active{color:var(--jade-700)}
    .nav-links a.active::after{display:none}
    .nav-sep{display:none}
    .nav-mobile-foot{display:block;margin-top:32px;font-size:14px;color:var(--ink-3);line-height:2}
    .menu-toggle{display:inline-flex}
    .header-cta{display:none}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:48px;padding:0 26px;border-radius:999px;font-size:15.5px;font-weight:500;
    transition:transform .24s var(--ease),background-color .24s var(--ease),background-image .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
  }
  .btn-primary{background-color:var(--jade-700);color:#fff;box-shadow:var(--shadow)}
  .btn-primary:hover{background-image:var(--grad);transform:translateY(-1px);box-shadow:var(--shadow-h)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{border:1.5px solid var(--line);color:var(--ink)}
  .btn-ghost:hover{background:rgba(31,77,63,.06);border-color:rgba(31,77,63,.35)}
  .btn-light{background:var(--paper);color:var(--jade-900)}
  .btn-light:hover{background:#fff;transform:translateY(-1px)}
  .btn-outline-light{border:1.5px solid rgba(255,255,255,.42);color:#fff}
  .btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7)}
  .btn-sm{min-height:40px;padding:0 18px;font-size:14px}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--jade-700);border-bottom:2px solid transparent;padding-bottom:2px}
  .link-more:hover{border-color:var(--copper);color:var(--copper)}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){ .section{padding:96px 0} }
  .section-alt{background:var(--paper-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .eyebrow{display:inline-block;font-size:13px;letter-spacing:.18em;color:var(--copper);font-weight:600}
  .section-head{max-width:780px}
  .section-head h2{margin-top:14px}
  .section-sub{margin-top:16px;font-size:16.5px;color:var(--ink-2)}
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
    font-size:12.5px;letter-spacing:.02em;color:var(--ink-2);background:#fff;border:1px solid var(--line);white-space:nowrap;
  }
  .badge-strong{background:rgba(63,143,118,.10);border-color:rgba(63,143,118,.28);color:#245245}
  .badge-dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.26);color:rgba(255,255,255,.9)}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;padding:48px 0 8px}
  .hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(120deg,rgba(31,77,63,.07),rgba(143,208,182,.12) 55%,rgba(194,112,58,.06));
  }
  .hero > .container{position:relative;z-index:1}
  .hero-grid{display:grid;gap:40px}
  @media (min-width:1024px){
    .hero{padding:72px 0 24px}
    .hero-grid{grid-template-columns:6fr 5fr;gap:56px;align-items:center}
  }
  .hero-title{margin-top:20px}
  .hero-sub{margin-top:22px;font-size:17px;color:var(--ink-2);max-width:50ch}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
  .stat-strip{display:flex;flex-wrap:wrap;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
  .stat{padding-right:26px;margin-right:26px;border-right:1px solid var(--line);margin-bottom:12px}
  .stat:last-child{border-right:0;margin-right:0;padding-right:0}
  .stat-num{display:block;font-family:var(--serif);font-size:30px;line-height:1;color:var(--jade-700)}
  .stat-label{display:block;margin-top:8px;font-size:13px;letter-spacing:.02em;color:var(--ink-3)}
  .hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
  .hero-visual img{width:100%;aspect-ratio:6/5;object-fit:cover;transition:transform .4s var(--ease)}
  .hero-visual:hover img{transform:scale(1.03)}
  .hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,33,28,.18),rgba(18,33,28,0) 45%,rgba(18,33,28,.34));pointer-events:none}
  .hero-visual .badge{position:absolute;top:18px;left:18px;z-index:2}

  /* ---------- 操作前确认 ---------- */
  .prepare-grid{display:grid;gap:40px}
  @media (min-width:1024px){ .prepare-grid{grid-template-columns:4fr 7fr;gap:64px;align-items:start} }
  .prepare-list{border-top:1px solid var(--line)}
  .prepare-list li{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
  .prepare-num{font-family:var(--serif);font-size:14px;color:var(--copper);padding-top:5px;letter-spacing:.02em}
  .prepare-title{font-size:18px}
  .prepare-desc{margin-top:8px;font-size:15.5px;color:var(--ink-2);max-width:62ch}

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;margin-top:8px}
  .timeline::before{
    content:"";position:absolute;left:7px;top:14px;bottom:14px;width:1px;
    background:linear-gradient(180deg,rgba(194,112,58,.55),rgba(31,77,63,.28) 55%,rgba(194,112,58,0));
  }
  .tl-item{position:relative;padding-left:52px;margin-bottom:32px}
  .tl-item:last-child{margin-bottom:0}
  .tl-dot{
    position:absolute;left:0;top:24px;width:15px;height:15px;border-radius:50%;
    background:#fff;border:2px solid var(--copper);box-shadow:0 0 0 5px rgba(194,112,58,.10);
  }
  .tl-meta{font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--copper);margin-bottom:12px}
  .tl-card{
    background:var(--card);border:1px solid var(--line);border-radius:24px;padding:28px 30px;
    box-shadow:var(--shadow);transition:box-shadow .24s var(--ease),transform .24s var(--ease);
  }
  .tl-item:nth-child(even) .tl-card{background:var(--paper)}
  .tl-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
  .tl-card > p{margin-top:12px;font-size:16px;color:var(--ink-2)}
  .tl-list{display:grid;gap:10px;margin-top:20px}
  .tl-list li{position:relative;padding-left:18px;font-size:15.5px;color:var(--ink-2)}
  .tl-list li::before{content:"";position:absolute;left:0;top:.78em;width:5px;height:5px;border-radius:50%;background:var(--jade-500);opacity:.75}
  .tl-foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;align-items:center}
  @media (max-width:639px){
    .tl-item{padding-left:36px}
    .tl-card{padding:22px 20px}
  }

  /* ---------- 适用情况 ---------- */
  .fit-list{border-top:1px solid var(--line);margin-top:40px}
  .fit-list li{
    display:grid;gap:8px;padding:24px 0;border-bottom:1px solid var(--line);
    transition:background-color .24s var(--ease);
  }
  @media (min-width:768px){
    .fit-list li{grid-template-columns:auto 1fr;gap:22px;align-items:baseline;padding:26px 0}
  }
  .fit-list li:hover{background:rgba(194,112,58,.045)}
  .fit-num{font-family:var(--serif);font-size:14px;color:var(--copper);letter-spacing:.02em}
  .fit-title{font-family:var(--serif);font-size:18px;font-weight:700}
  .fit-desc{margin-top:8px;font-size:15.5px;color:var(--ink-2);max-width:70ch}

  /* ---------- FAQ ---------- */
  .faq{max-width:900px;border-top:1px solid var(--line)}
  .faq details{border-bottom:1px solid var(--line)}
  .faq summary{
    list-style:none;display:flex;justify-content:space-between;gap:24px;align-items:flex-start;
    padding:22px 0;font-size:17px;font-weight:600;cursor:pointer;
  }
  .faq summary::-webkit-details-marker{display:none}
  .faq-icon{flex:0 0 auto;font-size:20px;line-height:1.2;color:var(--copper);transition:transform .24s var(--ease)}
  details[open] .faq-icon{transform:rotate(45deg)}
  .faq-answer{padding:0 0 24px;max-width:74ch;font-size:15.5px;color:var(--ink-2)}

  /* ---------- CTA ---------- */
  .cta-card{
    position:relative;overflow:hidden;border-radius:var(--r-lg);padding:40px 32px;
    background-image:linear-gradient(120deg,rgba(18,33,28,.95),rgba(31,77,63,.86)),url("/assets/images/backpic/back-2.png");
    background-size:cover;background-position:center;
    display:grid;gap:28px;
  }
  @media (min-width:1024px){
    .cta-card{grid-template-columns:1fr auto;align-items:center;padding:52px 48px;gap:48px}
  }
  .cta-card h2{color:#fff;margin-top:18px}
  .cta-card p{margin-top:14px;max-width:56ch;font-size:16px;color:rgba(255,255,255,.74)}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px}
  @media (max-width:639px){ .cta-actions .btn{width:100%} }

  /* ---------- 相关分类 ---------- */
  .rel-links{display:flex;flex-wrap:wrap;gap:0 36px;margin-top:32px}
  .rel-links a{display:inline-block;padding:14px 0;font-size:16px;border-bottom:1px solid var(--line)}
  .rel-links a:hover{color:var(--copper);border-color:var(--copper)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--jade-900);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:56px}
  @media (min-width:1024px){ .site-footer{margin-top:96px;padding-top:76px} }
  .footer-grid{display:grid;gap:36px}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1fr 1fr} }
  @media (min-width:1024px){
    .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0}
    .footer-col{padding:0 32px}
    .footer-col:first-child{padding-left:0}
    .footer-col:last-child{padding-right:0}
    .footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.10)}
  }
  .footer-brand{font-family:var(--serif);font-size:22px;font-weight:700;color:#fff}
  .footer-desc{margin-top:14px;max-width:34ch;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66)}
  .footer-title{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:16px}
  .footer-list,.footer-contact{display:grid;gap:10px;font-size:14.5px}
  .footer-list a{color:rgba(255,255,255,.74)}
  .footer-list a:hover{color:var(--jade-300)}
  .footer-contact li{color:rgba(255,255,255,.72)}
  .footer-bottom{
    margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;letter-spacing:.02em;color:rgba(255,255,255,.55);
  }

  /* ---------- 回到顶部 ---------- */
  .to-top{
    position:fixed;right:20px;bottom:24px;z-index:70;width:40px;height:40px;border-radius:50%;
    background:var(--card);border:1px solid var(--line);color:var(--jade-700);
    box-shadow:var(--shadow);display:inline-flex;align-items:center;justify-content:center;
    opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease),transform .24s var(--ease);
  }
  .to-top.show{opacity:1;visibility:visible}
  .to-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-h)}

/* roulang page: category4 */
:root{
    --jade-900:#12211C;
    --jade-700:#1F4D3F;
    --jade-500:#3F8F76;
    --jade-300:#8FD0B6;
    --copper:#C2703A;
    --paper:#F6F4EF;
    --surface:#FFFFFF;
    --line:#E5E0D6;
    --ink:#141A17;
    --muted:#5A6560;
    --faint:#8C948E;
    --grad:linear-gradient(120deg,#1F4D3F 0%,#3F8F76 55%,#8FD0B6 100%);
    --radius-lg:28px;
    --radius-md:18px;
    --radius-sm:12px;
    --shadow-1:0 1px 2px rgba(20,26,23,.04),0 12px 32px -12px rgba(20,26,23,.10);
    --shadow-2:0 18px 44px -14px rgba(20,26,23,.18);
    --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
    --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--sans);
    font-size:16.5px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-0.01em;color:var(--ink);}
  p{margin:0;}
  :focus-visible{outline:3px solid rgba(63,143,118,.35);outline-offset:3px;border-radius:4px;}

  .container{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){ .container{padding-left:32px;padding-right:32px;} }
  @media (min-width:1280px){ .container{padding-left:0;padding-right:0;} }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,244,239,.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
  .brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:21px;font-weight:700;color:var(--ink);letter-spacing:-0.01em;min-height:44px;}
  .brand-mark{
    width:30px;height:30px;border-radius:999px;flex:0 0 auto;
    background:var(--grad);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
    display:inline-flex;align-items:center;justify-content:center;
    color:#F6F4EF;font-family:var(--serif);font-size:14px;font-weight:700;
  }
  .brand em{font-style:normal;color:var(--copper);}

  .nav-links{display:flex;align-items:center;}
  .nav-links li{display:flex;align-items:center;}
  .nav-sep{width:1px;height:12px;background:var(--line);margin:0 18px;display:inline-block;}
  .nav-links a{
    position:relative;display:inline-flex;align-items:center;min-height:44px;
    font-size:15px;color:var(--muted);transition:color .2s ease;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
    background:var(--copper);border-radius:2px;transform:scaleX(0);transform-origin:left;
    transition:transform .24s cubic-bezier(.2,.7,.3,1);
  }
  .nav-links a:hover{color:var(--ink);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--ink);}
  .nav-links a.active::after{transform:scaleX(1);}

  .header-actions{display:flex;align-items:center;gap:14px;}
  .icon-btn{
    width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
    border-radius:999px;border:1px solid transparent;background:transparent;color:var(--muted);
    transition:background .2s ease,color .2s ease,border-color .2s ease;cursor:pointer;
  }
  .icon-btn:hover{color:var(--jade-700);background:rgba(31,77,63,.06);border-color:var(--line);}
  .nav-cta{
    display:inline-flex;align-items:center;justify-content:center;
    height:44px;padding:0 20px;border-radius:999px;
    background:var(--jade-700);color:#F6F4EF;font-size:14.5px;font-weight:600;
    transition:background .24s ease,transform .24s ease,box-shadow .24s ease;
    box-shadow:var(--shadow-1);
  }
  .nav-cta:hover{background:var(--grad);transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .nav-cta:active{transform:translateY(0);}

  .hamburger{display:none;}

  .mobile-panel{
    display:none;position:fixed;inset:0;z-index:80;background:var(--paper);
    padding:88px 24px 32px;flex-direction:column;justify-content:space-between;
  }
  .mobile-panel.open{display:flex;}
  .mobile-panel ul{border-top:1px solid var(--line);}
  .mobile-panel li{border-bottom:1px solid var(--line);}
  .mobile-panel a{display:block;padding:18px 4px;font-family:var(--serif);font-size:20px;color:var(--ink);}
  .mobile-panel a.active{color:var(--copper);}
  .mobile-meta{font-size:13px;color:var(--faint);letter-spacing:.02em;}
  .mobile-close{
    position:absolute;top:20px;right:20px;width:44px;height:44px;border-radius:999px;
    border:1px solid var(--line);background:#fff;color:var(--ink);font-size:20px;cursor:pointer;
  }

  /* ---------- hero ---------- */
  .hero{position:relative;padding:72px 0 64px;border-bottom:1px solid var(--line);overflow:hidden;}
  .hero-bg{
    position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center right;opacity:.20;
  }
  .hero-veil{
    position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(246,244,239,.96) 0%,rgba(246,244,239,.88) 45%,rgba(246,244,239,.62) 100%);
  }
  .hero-inner{position:relative;display:grid;grid-template-columns:1fr;gap:40px;align-items:end;}
  @media (min-width:1024px){ .hero-inner{grid-template-columns:7fr 5fr;gap:56px;} }

  .eyebrow{
    display:inline-flex;align-items:center;gap:10px;
    font-size:13px;letter-spacing:.18em;color:var(--copper);text-transform:uppercase;
    margin-bottom:18px;
  }
  .eyebrow::before{content:"";width:26px;height:1px;background:var(--copper);display:inline-block;}

  .hero h1{font-size:clamp(34px,4.4vw,56px);line-height:1.15;margin-bottom:20px;}
  .hero-lead{font-size:17px;color:var(--muted);max-width:620px;margin-bottom:30px;}
  .btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:48px;padding:0 26px;border-radius:999px;
    font-size:15px;font-weight:600;cursor:pointer;border:1.5px solid transparent;
    transition:background .24s ease,transform .24s ease,box-shadow .24s ease,color .24s ease,border-color .24s ease;
  }
  .btn-primary{background:var(--jade-700);color:#F6F4EF;box-shadow:var(--shadow-1);}
  .btn-primary:hover{background:var(--grad);transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;border-color:var(--jade-700);color:var(--jade-700);}
  .btn-ghost:hover{background:rgba(31,77,63,.06);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-light{background:rgba(246,244,239,.10);border-color:rgba(246,244,239,.34);color:#F6F4EF;}
  .btn-light:hover{background:rgba(246,244,239,.18);transform:translateY(-1px);}

  .badge-strip{
    display:flex;flex-wrap:wrap;align-items:center;gap:0 26px;
    border-top:1px solid var(--line);padding-top:22px;
  }
  .badge-item{display:flex;align-items:baseline;gap:8px;padding:6px 0;}
  .badge-item .num{font-family:var(--serif);font-size:30px;line-height:1;color:var(--jade-700);}
  .badge-item .lab{font-size:13px;letter-spacing:.02em;color:var(--faint);}

  .hero-card{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-1);background:#fff;
  }
  .hero-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:6/5;transition:transform .24s cubic-bezier(.2,.7,.3,1);}
  .hero-card:hover img{transform:scale(1.03);}
  .hero-card::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(160deg,rgba(31,77,63,.34) 0%,rgba(18,33,28,.12) 46%,rgba(143,208,182,.16) 100%);
    pointer-events:none;
  }
  .hero-chip{
    position:absolute;top:18px;left:18px;z-index:2;
    display:inline-flex;align-items:center;gap:8px;
    height:28px;padding:0 14px;border-radius:999px;
    background:rgba(246,244,239,.90);border:1px solid rgba(226,220,208,.9);
    font-size:13px;color:var(--jade-700);backdrop-filter:blur(6px);
  }
  .hero-chip b{font-family:var(--serif);font-size:15px;}

  /* ---------- sections ---------- */
  .section{padding:calc(96px / 2) 0;}
  @media (min-width:769px){ .section{padding:72px 0;} }
  @media (max-width:768px){ .section{padding:56px 0;} }

  .section-head{max-width:720px;margin-bottom:44px;}
  .section-head h2{font-size:30px;line-height:1.3;margin-bottom:14px;}
  .section-head p{color:var(--muted);}
  .sec-note{font-size:13px;letter-spacing:.02em;color:var(--faint);}

  /* split blocks */
  .split{display:grid;grid-template-columns:1fr;gap:34px;align-items:center;}
  .split + .split{margin-top:64px;}
  @media (min-width:1024px){
    .split.grid-a{grid-template-columns:5fr 7fr;gap:56px;}
    .split.grid-b{grid-template-columns:7fr 5fr;gap:56px;}
    .split.grid-b .split-media{order:2;}
    .split.grid-b .split-body{order:1;}
  }
  .split-media{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-1);background:#fff;
  }
  .split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .24s cubic-bezier(.2,.7,.3,1);}
  .split-media:hover img{transform:scale(1.03);}
  .split-index{
    font-family:var(--serif);font-size:14px;letter-spacing:.14em;color:var(--copper);
    display:block;margin-bottom:12px;
  }
  .split-body h3{font-size:24px;line-height:1.35;margin-bottom:14px;}
  .split-body p{color:var(--muted);margin-bottom:20px;}

  .point-list{display:grid;gap:12px;}
  .point-list li{
    display:flex;gap:12px;align-items:flex-start;
    font-size:15.5px;color:var(--ink);padding-bottom:12px;border-bottom:1px solid var(--line);
  }
  .point-list li:last-child{border-bottom:0;padding-bottom:0;}
  .point-dot{
    flex:0 0 auto;width:6px;height:6px;border-radius:999px;background:var(--copper);margin-top:11px;
  }

  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;}
  .tag{
    display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
    font-size:13px;letter-spacing:.02em;color:var(--jade-700);
    background:rgba(63,143,118,.08);border:1px solid rgba(63,143,118,.22);
  }

  /* process */
  .process{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:8px 0;}
  .process-row{
    display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start;
    padding:24px 0;border-bottom:1px solid var(--line);
  }
  .process-row:last-child{border-bottom:0;}
  .process-num{font-family:var(--serif);font-size:20px;color:var(--copper);letter-spacing:.04em;padding-top:2px;}
  .process-row h3{font-size:19px;margin-bottom:8px;}
  .process-row p{color:var(--muted);font-size:15.5px;}
  @media (min-width:1024px){
    .process-row{grid-template-columns:64px 260px 1fr;align-items:baseline;}
    .process-row .process-meta{font-size:13px;color:var(--faint);letter-spacing:.02em;text-align:right;}
  }

  /* faq */
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-ico{
    flex:0 0 auto;width:26px;height:26px;position:relative;border-radius:999px;
    border:1px solid var(--line);background:#fff;transition:transform .24s ease,border-color .24s ease;
  }
  .faq-ico::before,.faq-ico::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--jade-700);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-ico::before{width:12px;height:1.5px;}
  .faq-ico::after{width:1.5px;height:12px;}
  .faq-item[open] .faq-ico{transform:rotate(45deg);border-color:var(--copper);}
  .faq-item[open] .faq-ico::before,.faq-item[open] .faq-ico::after{background:var(--copper);}
  .faq-answer{padding:0 0 24px;font-size:15px;color:var(--muted);max-width:860px;}

  /* CTA */
  .cta-card{
    background:var(--jade-900);color:#F6F4EF;border-radius:var(--radius-lg);
    padding:44px 36px;display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
    border:1px solid rgba(246,244,239,.10);
  }
  @media (min-width:1024px){ .cta-card{grid-template-columns:1fr auto;padding:52px 52px;} }
  .cta-card h2{color:#F6F4EF;font-size:28px;line-height:1.32;margin-bottom:12px;}
  .cta-card p{color:rgba(246,244,239,.72);max-width:560px;}
  .cta-badge{
    display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;
    border:1px solid rgba(143,208,182,.45);background:rgba(143,208,182,.12);
    font-size:13px;color:var(--jade-300);letter-spacing:.02em;margin-bottom:16px;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
  @media (max-width:1023px){ .cta-actions .btn{width:100%;} }

  /* related */
  .related{border-top:1px solid var(--line);margin-top:8px;}
  .related-list{display:grid;gap:0;}
  .related-list a{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:20px 0;border-bottom:1px solid var(--line);
    font-size:16.5px;color:var(--ink);transition:color .2s ease,padding-left .24s ease;
  }
  .related-list a .arrow{color:var(--faint);transition:transform .24s ease,color .24s ease;}
  .related-list a:hover{color:var(--copper);padding-left:6px;}
  .related-list a:hover .arrow{transform:translateX(4px);color:var(--copper);}

  /* footer */
  .site-footer{background:var(--jade-900);color:rgba(246,244,239,.82);margin-top:80px;padding:64px 0 28px;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1fr 1fr;} }
  @media (min-width:1024px){
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:0;}
    .footer-col{padding:0 28px;}
    .footer-col:first-child{padding-left:0;}
    .footer-col:last-child{padding-right:0;}
    .footer-col + .footer-col{border-left:1px solid rgba(246,244,239,.12);}
  }
  .footer-brand{font-family:var(--serif);font-size:22px;color:#F6F4EF;margin-bottom:14px;letter-spacing:-0.01em;}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(246,244,239,.62);max-width:320px;}
  .footer-title{font-size:14px;letter-spacing:.08em;color:#F6F4EF;margin-bottom:16px;}
  .footer-list li,.footer-contact li{margin-bottom:10px;font-size:14px;color:rgba(246,244,239,.66);}
  .footer-list a{color:rgba(246,244,239,.66);transition:color .2s ease;}
  .footer-list a:hover{color:#8FD0B6;}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid rgba(246,244,239,.12);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:13px;color:rgba(246,244,239,.50);letter-spacing:.02em;
  }

  .to-top{
    position:fixed;right:22px;bottom:26px;z-index:50;
    width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
    background:rgba(255,255,255,.92);color:var(--jade-700);font-size:16px;cursor:pointer;
    box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease;
  }
  .to-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}

  @media (max-width:1023px){
    .nav-links,.header-actions .nav-cta,.header-actions .icon-btn{display:none;}
    .hamburger{
      display:inline-flex;align-items:center;justify-content:center;
      width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
      background:#fff;cursor:pointer;
    }
    .hamburger span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;}
    .hamburger span::before,.hamburger span::after{
      content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
    }
    .hamburger span::before{top:-6px;}
    .hamburger span::after{top:6px;}
  }