/* roulang page: index */
:root{
  --ink:#22332F;
  --moss:#3F5D55;
  --terra:#C4643A;
  --terra-dark:#A95230;
  --paper:#F7F5F0;
  --mist:#EDE9E1;
  --card:#FFFFFF;
  --text:#1A2421;
  --text-sub:#5C6A65;
  --line:#D9D3C9;
  --shadow-soft:0 1px 2px rgba(26,36,33,.05);
  --shadow-lift:0 10px 28px -14px rgba(26,36,33,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",sans-serif;
  --font-song:"Songti SC","SimSun","Source Han Serif SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text)}
p{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--terra);outline-offset:2px}
::selection{background:rgba(196,100,58,.22)}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.wrap{padding-left:32px;padding-right:32px}}
.song{font-family:var(--font-song)}
.tnum{font-variant-numeric:tabular-nums}
.section{padding-top:56px;padding-bottom:56px}
@media (min-width:1024px){.section{padding-top:104px;padding-bottom:104px}}
.section-tight{padding-top:44px;padding-bottom:44px}
@media (min-width:1024px){.section-tight{padding-top:72px;padding-bottom:72px}}
.h1{font-size:clamp(2.2rem,5.2vw,3.8rem);line-height:1.15;letter-spacing:-.01em;font-weight:700}
.h2{font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.25;font-weight:700}
.h3{font-size:1.2rem;line-height:1.5;font-weight:600}
.lead{font-size:17px;line-height:1.85;color:var(--text-sub)}
.meta{font-size:13.5px;line-height:1.7;letter-spacing:.02em;color:var(--text-sub)}
.hr-line{height:1px;background:var(--line);border:0;margin:0}

/* 导航 */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  height:72px;
  --nav-fg:#F7F5F0;
  --nav-line:rgba(247,245,240,.5);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  --nav-fg:#1A2421;
  --nav-line:var(--moss);
  background:rgba(247,245,240,.92);
  border-bottom:1px solid var(--line);
}
.site-header .nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--nav-fg);font-size:19px;font-weight:700;letter-spacing:.04em;transition:color .3s var(--ease)}
.brand svg{display:block}
.nav-links{display:none;align-items:center;gap:32px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;font-size:15px;color:var(--nav-fg);padding:26px 0;letter-spacing:.02em;
  transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:18px;width:100%;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav-link:hover::after,.nav-link:focus-visible::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{transform:translateY(0)}
.nav-link.active::before{
  content:"";position:absolute;left:50%;bottom:10px;width:4px;height:4px;border-radius:999px;
  background:var(--terra);transform:translateX(-50%);
}
.nav-cta{
  display:none;
  height:38px;padding:0 18px;align-items:center;border:1px solid var(--nav-line);border-radius:3px;
  font-size:14px;color:var(--nav-fg);letter-spacing:.02em;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.nav-cta:hover{background:var(--moss);border-color:var(--moss);color:#fff;transform:translateY(-1px)}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.menu-toggle{
  display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 4px;
  background:none;border:0;color:var(--nav-fg);font-size:15px;letter-spacing:.06em;cursor:pointer;
}
@media (min-width:1024px){.menu-toggle{display:none}}
.menu-toggle .bars{display:block;width:20px}
.menu-toggle .bars i{display:block;height:1px;background:currentColor;margin:5px 0;transition:transform .3s var(--ease),opacity .3s var(--ease)}
.mobile-menu{
  position:fixed;inset:0;z-index:60;background:var(--paper);
  transform:translateY(-100%);transition:transform .35s var(--ease);
  display:flex;flex-direction:column;padding:0 20px 32px;
}
.mobile-menu.open{transform:translateY(0)}
.mobile-menu .mm-head{height:72px;display:flex;align-items:center;justify-content:space-between}
.mobile-menu .mm-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:none;border:0;cursor:pointer;position:relative}
.mobile-menu .mm-close span{position:absolute;width:22px;height:1px;background:var(--ink)}
.mobile-menu .mm-close span:first-child{transform:rotate(45deg)}
.mobile-menu .mm-close span:last-child{transform:rotate(-45deg)}
.mobile-menu a.mm-link{display:flex;align-items:center;justify-content:space-between;height:56px;font-size:20px;color:var(--text);border-bottom:1px solid var(--line)}
.mobile-menu a.mm-link.active{color:var(--terra)}
.mobile-menu .mm-foot{margin-top:auto;padding-top:24px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:3px;border:1px solid transparent;
  font-size:15px;font-weight:500;letter-spacing:.02em;cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-primary{background:var(--terra);color:#fff}
.btn-primary:hover{background:var(--terra-dark);transform:translateY(-1px);box-shadow:var(--shadow-lift)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1A2724;transform:translateY(-1px)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{border-color:rgba(247,245,240,.55);color:#F7F5F0;background:transparent}
.btn-ghost:hover{border-color:#F7F5F0;background:rgba(247,245,240,.1);transform:translateY(-1px)}
.btn-on-dark{border-color:rgba(247,245,240,.55);color:#F7F5F0;background:transparent}
.btn-on-dark:hover{border-color:#F7F5F0;background:rgba(247,245,240,.12);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

/* 链接下划线展开 */
.link-u{position:relative;display:inline-block;padding-bottom:2px}
.link-u::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.link-u:hover::after,.link-u:focus-visible::after{transform:scaleX(1)}
.link-moss{color:var(--moss);font-size:15px}
.link-terra{color:var(--terra);font-size:15px}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12.5px;letter-spacing:.04em;line-height:1;
  border:1px solid rgba(196,100,58,.45);color:var(--terra);background:rgba(196,100,58,.06);
}
.badge-moss{border-color:rgba(63,93,85,.4);color:var(--moss);background:rgba(63,93,85,.06)}
.badge-hero{border-color:rgba(247,245,240,.4);color:#F7F5F0;background:rgba(247,245,240,.1)}

/* 卡片 */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:10px;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--moss);box-shadow:var(--shadow-lift)}
.pic-wrap{overflow:hidden;border-radius:6px;background:var(--mist)}
.pic-wrap img{transition:transform .35s var(--ease)}
.card:hover .pic-wrap img,.pic-wrap:hover img{transform:scale(1.03)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* Hero */
.hero{position:relative;min-height:60vh;display:flex;align-items:center;overflow:hidden}
@media (min-width:1024px){.hero{min-height:78vh}}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;z-index:0}
.hero-mask{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(34,51,47,.94) 0%,rgba(34,51,47,.78) 46%,rgba(34,51,47,.3) 100%);
}
.hero .wrap{position:relative;z-index:2}

/* 痛点列表 */
.pain-list{margin-top:8px}
.pain-item{display:flex;gap:24px;align-items:baseline;padding:26px 0;border-top:1px solid var(--line)}
.pain-item:last-child{border-bottom:1px solid var(--line)}
.pain-num{font-family:var(--font-song);font-size:26px;color:var(--terra);line-height:1;min-width:44px;font-variant-numeric:tabular-nums}
.pain-text{font-size:clamp(1.05rem,1.8vw,1.25rem);font-weight:600;color:var(--text)}
.pain-sub{margin-top:6px;font-size:15.5px;color:var(--text-sub)}

/* 数据 */
.stat-num{font-family:var(--font-song);font-size:clamp(2.2rem,5vw,3.2rem);line-height:1;color:var(--ink);font-variant-numeric:tabular-nums}
.stat-unit{font-size:15px;color:var(--text-sub);margin-left:6px}

/* 证言 */
.quote-mark{font-family:var(--font-song);font-size:46px;line-height:.6;color:var(--terra)}
.testi-scroll{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px}
.testi-scroll > *{scroll-snap-align:start;flex:0 0 85%}
@media (min-width:1024px){
  .testi-scroll{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;overflow:visible}
  .testi-scroll > *{flex:none}
}
.hide-scroll{scrollbar-width:none;-ms-overflow-style:none}
.hide-scroll::-webkit-scrollbar{display:none}

/* FAQ */
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--moss);transition:transform .3s var(--ease),opacity .3s var(--ease)}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1px}
.faq-icon::after{left:7.5px;top:0;width:1px;height:16px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-body{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-body p{padding:0 40px 22px 0;color:var(--text-sub);font-size:15.5px;line-height:1.85}

/* 表单 */
.field{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:3px;
  background:#fff;color:var(--text);font-size:15px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
textarea.field{height:auto;padding:12px 14px;line-height:1.7;resize:vertical}
.field:focus{border-color:var(--moss);box-shadow:0 0 0 3px rgba(63,93,85,.12);outline:none}
.field::placeholder{color:#9AA5A0}

/* 图片遮罩与图文块 */
.img-mask{position:relative;overflow:hidden;border-radius:6px;background:var(--mist)}
.img-mask::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(34,51,47,0) 45%,rgba(34,51,47,.42) 100%)}

/* 滚动出现动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:translateY(0)}

/* 页脚 */
.site-footer{background:var(--ink);color:#E8E4DC;padding-top:64px}
.site-footer a{color:#E8E4DC}
.footer-title{font-size:14px;letter-spacing:.12em;color:#9FB0A9;margin-bottom:16px}
.footer-link{display:inline-block;padding:5px 0;font-size:15px;color:#D8D3CA;position:relative}
.footer-link::after{
  content:"";position:absolute;left:0;bottom:3px;width:100%;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.footer-link:hover::after,.footer-link:focus-visible::after{transform:scaleX(1)}
.footer-bottom{border-top:1px solid rgba(247,245,240,.14);margin-top:56px;padding:22px 0 30px}

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

/* roulang page: article */
:root{
    --ink:#22332F;
    --ink-2:#3F5D55;
    --clay:#C4643A;
    --clay-dark:#A9522E;
    --paper:#F7F5F0;
    --mist:#EDE9E1;
    --card:#FFFFFF;
    --text:#1A2421;
    --text-2:#5C6A65;
    --line:#D9D3C9;
    --radius-btn:3px;
    --radius-card:10px;
    --radius-img:6px;
    --shadow-1:0 1px 2px rgba(26,36,33,.05);
    --shadow-2:0 10px 28px -14px rgba(26,36,33,.22);
    --ease:cubic-bezier(.22,.61,.36,1);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,sans-serif;
    font-size:17px;
    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-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--clay);outline-offset:3px;}

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

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:70;
    background:rgba(247,245,240,0);
    border-bottom:1px solid transparent;
    transition:background .3s var(--ease),border-color .3s var(--ease);
  }
  .site-header.is-stuck{
    background:rgba(247,245,240,.9);
    border-bottom-color:var(--line);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:72px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-size:19px;
    font-weight:700;
    letter-spacing:.04em;
    color:var(--ink);
    white-space:nowrap;
  }
  .brand svg{flex:none;}
  .nav-links{display:none;align-items:center;gap:32px;}
  @media (min-width:1024px){
    .nav-links{display:flex;}
  }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:6px 0;
    font-size:15px;
    color:var(--text-2);
    transition:color .25s var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:0;
    height:1px;
    background:var(--ink-2);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .3s var(--ease);
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--ink);}
  .nav-link.active::after{transform:scaleX(1);}
  .header-actions{display:flex;align-items:center;gap:12px;}
  .header-cta{display:none;}
  @media (min-width:1024px){
    .header-cta{display:inline-flex;}
  }
  .menu-toggle{
    display:inline-flex;
    align-items:center;
    gap:10px;
    min-height:44px;
    padding:8px 0;
    background:none;
    border:0;
    font-size:15px;
    color:var(--ink);
    cursor:pointer;
  }
  .menu-icon{display:inline-flex;flex-direction:column;gap:5px;width:18px;}
  .menu-icon i{display:block;height:1px;width:100%;background:var(--ink);}
  @media (min-width:1024px){
    .menu-toggle{display:none;}
  }

  .mobile-panel{
    position:fixed;
    inset:0;
    z-index:95;
    display:flex;
    flex-direction:column;
    padding:20px;
    background:var(--paper);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    overflow-y:auto;
    transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
  }
  .mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .mobile-head{display:flex;align-items:center;justify-content:space-between;height:52px;}
  .menu-close{
    position:relative;
    width:44px;height:44px;
    background:none;border:0;cursor:pointer;
  }
  .menu-close span{
    position:absolute;left:12px;top:21px;
    width:20px;height:1px;background:var(--ink);
  }
  .menu-close span:first-child{transform:rotate(45deg);}
  .menu-close span:last-child{transform:rotate(-45deg);}
  .mobile-links{margin-top:28px;border-top:1px solid var(--line);}
  .mobile-links a{
    display:flex;
    align-items:center;
    min-height:56px;
    font-size:20px;
    color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .mobile-foot{margin-top:32px;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:13px 26px;
    font-size:15px;
    font-weight:600;
    line-height:1.3;
    border:1px solid transparent;
    border-radius:var(--radius-btn);
    cursor:pointer;
    transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
  }
  .btn-sm{padding:9px 18px;font-size:14px;}
  .btn-primary{background:var(--clay);border-color:var(--clay);color:#fff;}
  .btn-primary:hover{background:var(--clay-dark);border-color:var(--clay-dark);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:#F7F5F0;transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}

  .link-underline{
    display:inline-block;
    background-image:linear-gradient(currentColor,currentColor);
    background-repeat:no-repeat;
    background-position:0 100%;
    background-size:0% 1px;
    transition:background-size .3s var(--ease),color .25s var(--ease);
  }
  .link-underline:hover{background-size:100% 1px;}

  /* ---------- 文章头部 ---------- */
  .article-hero{
    padding:44px 0 40px;
    background:linear-gradient(180deg,#F7F5F0 0%,#EDE9E1 100%);
    border-bottom:1px solid var(--line);
  }
  .crumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    font-size:14px;
    line-height:1.7;
    color:var(--text-2);
  }
  .crumb a{color:var(--text-2);}
  .crumb a:hover{color:var(--ink);}
  .crumb-sep{color:#B6AFA3;}
  .crumb-current{
    color:var(--text-2);
    max-width:100%;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
  }
  .eyebrow{
    display:block;
    margin:26px 0 12px;
    font-size:13px;
    letter-spacing:.16em;
    color:var(--ink-2);
  }
  .article-title{
    max-width:900px;
    font-family:"Songti SC","Source Han Serif SC","SimSun",serif;
    font-size:clamp(2rem,4.6vw,3.1rem);
    font-weight:700;
    line-height:1.18;
    letter-spacing:-.01em;
    color:var(--ink);
    word-break:break-word;
  }
  .article-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:12px;
    margin-top:22px;
    font-size:14px;
    color:var(--text-2);
  }
  .meta-dot{
    width:4px;height:4px;
    border-radius:50%;
    background:#B6AFA3;
  }

  /* ---------- 正文区 ---------- */
  .article-shell{padding:64px 0 72px;}
  @media (min-width:768px){
    .article-shell{padding:80px 0 96px;}
  }
  .article-main{max-width:760px;margin:0 auto;}

  .article-body{
    font-size:17px;
    line-height:1.9;
    color:var(--text);
    word-break:break-word;
    overflow-wrap:break-word;
  }
  .article-body > *:first-child{margin-top:0;}
  .article-body p{margin:0 0 1.2em;}
  .article-body h2{
    position:relative;
    margin:2.4em 0 .9em;
    padding-top:22px;
    font-family:"Songti SC","Source Han Serif SC","SimSun",serif;
    font-size:clamp(1.32rem,2.6vw,1.7rem);
    font-weight:700;
    line-height:1.35;
    color:var(--ink);
  }
  .article-body h2::before{
    content:"";
    position:absolute;
    left:0;top:0;
    width:52px;height:2px;
    background:var(--clay);
  }
  .article-body h3{
    margin:1.9em 0 .7em;
    font-size:1.1rem;
    font-weight:600;
    line-height:1.5;
    color:var(--ink);
  }
  .article-body h4{
    margin:1.6em 0 .6em;
    font-size:1rem;
    font-weight:600;
    color:var(--ink-2);
  }
  .article-body ul,
  .article-body ol{margin:0 0 1.2em;}
  .article-body ul{padding-left:1.25em;}
  .article-body ul li{position:relative;margin-bottom:.55em;}
  .article-body ul li::before{
    content:"";
    position:absolute;
    left:-1.15em;top:.78em;
    width:5px;height:5px;
    border-radius:50%;
    background:var(--clay);
  }
  .article-body ol{list-style:decimal;padding-left:1.6em;}
  .article-body ol li{margin-bottom:.55em;padding-left:.2em;}
  .article-body ol li::marker{color:var(--clay);font-weight:600;}
  .article-body blockquote{
    margin:1.7em 0;
    padding:18px 24px;
    border-left:3px solid var(--ink-2);
    border-radius:0 var(--radius-img) var(--radius-img) 0;
    background:var(--mist);
    color:var(--text-2);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body img{
    width:100%;
    height:auto;
    margin:1.8em 0;
    border-radius:var(--radius-img);
  }
  .article-body figure{margin:1.8em 0;}
  .article-body figure img{margin:0;}
  .article-body figcaption{
    margin-top:10px;
    font-size:13px;
    line-height:1.7;
    color:var(--text-2);
    text-align:center;
  }
  .article-body a{
    color:var(--ink-2);
    text-decoration:underline;
    text-decoration-color:rgba(63,93,85,.45);
    text-underline-offset:3px;
    transition:color .25s var(--ease),text-decoration-color .25s var(--ease);
  }
  .article-body a:hover{color:var(--clay);text-decoration-color:var(--clay);}
  .article-body strong{font-weight:700;color:var(--ink);}
  .article-body hr{margin:2.2em 0;border:0;border-top:1px solid var(--line);}
  .article-body table{
    width:100%;
    margin:1.7em 0;
    border-collapse:collapse;
    font-size:15.5px;
    line-height:1.7;
  }
  .article-body th,
  .article-body td{
    padding:10px 14px;
    border:1px solid var(--line);
    text-align:left;
    vertical-align:top;
  }
  .article-body th{background:var(--mist);color:var(--ink);font-weight:600;}
  .article-body code{
    padding:2px 6px;
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    font-size:.92em;
    background:var(--mist);
    border-radius:4px;
    word-break:break-all;
  }
  .article-body pre{
    margin:1.7em 0;
    padding:18px 20px;
    background:var(--ink);
    color:#EDE9E1;
    border-radius:var(--radius-img);
    overflow-x:auto;
    font-size:14.5px;
    line-height:1.75;
  }
  .article-body pre code{padding:0;background:transparent;color:inherit;word-break:normal;}

  .empty-state{
    padding:56px 28px;
    text-align:center;
    background:var(--card);
    border:1px dashed var(--line);
    border-radius:var(--radius-card);
  }
  .empty-title{
    font-family:"Songti SC","Source Han Serif SC","SimSun",serif;
    font-size:1.4rem;
    font-weight:700;
    color:var(--ink);
  }
  .empty-desc{margin:12px 0 26px;font-size:15.5px;color:var(--text-2);}

  .article-foot{
    margin-top:56px;
    padding-top:28px;
    border-top:1px solid var(--line);
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
  .tag{
    display:inline-flex;
    align-items:center;
    padding:6px 15px;
    font-size:13.5px;
    line-height:1.6;
    color:var(--text-2);
    background:var(--card);
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
  }
  .tag:hover{
    color:var(--ink);
    border-color:var(--ink-2);
    background:rgba(63,93,85,.08);
  }
  .back-link{font-size:15px;color:var(--ink-2);}

  /* ---------- 通用板块 ---------- */
  .section{padding:88px 0;}
  @media (max-width:767px){
    .section{padding:56px 0;}
  }
  .section-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:40px;
  }
  .section-title{
    font-family:"Songti SC","Source Han Serif SC","SimSun",serif;
    font-size:clamp(1.5rem,2.8vw,2.05rem);
    font-weight:700;
    line-height:1.3;
    color:var(--ink);
  }
  .section-sub{
    margin-top:12px;
    max-width:640px;
    font-size:15.5px;
    line-height:1.85;
    color:var(--text-2);
  }

  /* ---------- 相关阅读卡片 ---------- */
  .related-section{
    padding:80px 0;
    background:var(--mist);
    border-top:1px solid var(--line);
  }
  @media (max-width:767px){
    .related-section{padding:56px 0;}
  }
  .related-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:24px;
  }
  @media (min-width:768px){
    .related-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media (min-width:1024px){
    .related-grid{grid-template-columns:repeat(3,1fr);}
  }
  .post-card{
    display:flex;
    flex-direction:column;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .post-card:hover{
    transform:translateY(-2px);
    border-color:var(--ink-2);
    box-shadow:var(--shadow-2);
  }
  .post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--mist);}
  .post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .post-card:hover .post-thumb img{transform:scale(1.03);}
  .post-body{display:flex;flex-direction:column;gap:12px;padding:24px 24px 26px;}
  .badge{
    align-self:flex-start;
    display:inline-flex;
    align-items:center;
    padding:4px 12px;
    font-size:12.5px;
    letter-spacing:.02em;
    color:var(--ink-2);
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:999px;
  }
  .post-title{
    font-size:1.15rem;
    font-weight:600;
    line-height:1.45;
    color:var(--ink);
  }
  .post-desc{
    font-size:14.5px;
    line-height:1.8;
    color:var(--text-2);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .post-meta{
    margin-top:auto;
    padding-top:8px;
    font-size:13.5px;
    color:#8B948F;
    font-variant-numeric:tabular-nums;
  }

  /* ---------- FAQ ---------- */
  .faq-section{padding:88px 0;background:var(--card);border-top:1px solid var(--line);}
  @media (max-width:767px){
    .faq-section{padding:56px 0;}
  }
  .faq-inner{max-width:800px;margin:0 auto;}
  .faq-list{margin-top:32px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    width:100%;
    padding:20px 0;
    background:none;
    border:0;
    font-size:17px;
    font-weight:600;
    line-height:1.6;
    color:var(--ink);
    text-align:left;
    cursor:pointer;
  }
  .faq-icon{position:relative;flex:none;width:16px;height:16px;}
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--ink-2);
    transition:transform .3s var(--ease),opacity .3s var(--ease);
  }
  .faq-icon::before{left:0;top:7px;width:16px;height:1.5px;}
  .faq-icon::after{left:7px;top:0;width:1.5px;height:16px;}
  .faq-item.is-open .faq-icon::after{opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease);}
  .faq-a-inner{padding:0 0 22px;font-size:15.5px;line-height:1.85;color:var(--text-2);}

  /* ---------- 收尾 CTA ---------- */
  .cta-band{
    padding:88px 0;
    background:var(--ink);
    color:#EDE9E1;
  }
  @media (min-width:768px){
    .cta-band{padding:104px 0;}
  }
  .cta-inner{max-width:720px;}
  .cta-band h2{
    font-family:"Songti SC","Source Han Serif SC","SimSun",serif;
    font-size:clamp(1.6rem,3vw,2.2rem);
    font-weight:700;
    line-height:1.3;
    color:#FFFFFF;
  }
  .cta-band p{
    margin-top:16px;
    font-size:17px;
    line-height:1.85;
    color:#C6C1B8;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
  .cta-band .btn-ghost{border-color:rgba(237,233,225,.55);color:#EDE9E1;}
  .cta-band .btn-ghost:hover{background:#EDE9E1;color:var(--ink);}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#C6C1B8;padding-top:72px;}
  .footer-title{
    margin-bottom:14px;
    font-size:13px;
    letter-spacing:.14em;
    color:#8FA39A;
  }
  .footer-link{
    display:inline-block;
    padding:7px 0;
    font-size:15px;
    color:#C6C1B8;
    background-image:linear-gradient(currentColor,currentColor);
    background-repeat:no-repeat;
    background-position:0 100%;
    background-size:0% 1px;
    transition:background-size .3s var(--ease),color .25s var(--ease);
  }
  .footer-link:hover{color:#FFFFFF;background-size:100% 1px;}
  .footer-bottom{
    margin-top:56px;
    padding:22px 0 28px;
    border-top:1px solid rgba(217,211,201,.18);
  }

  /* ---------- 进入视口动效 ---------- */
  .reveal{
    opacity:0;
    transform:translateY(16px);
    transition:opacity .6s var(--ease),transform .6s var(--ease);
  }
  .reveal.is-visible{opacity:1;transform:translateY(0);}

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

/* roulang page: category1 */
:root{
    --ink:#1A2421;
    --ink-soft:#5C6A65;
    --line:#D9D3C9;
    --paper:#F7F5F0;
    --mist:#EDE9E1;
    --cloud-ink:#22332F;
    --cloud-gap:#3F5D55;
    --clay:#C4643A;
    --clay-deep:#AC552F;
    --white:#FFFFFF;
    --radius-btn:3px;
    --radius-card:10px;
    --radius-pic:6px;
    --shadow-1:0 1px 2px rgba(26,36,33,.05);
    --shadow-2:0 10px 28px -14px rgba(26,36,33,.22);
    --ease:cubic-bezier(.22,.61,.36,1);
    --sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
    --serif:"Songti SC","SimSun","Noto Serif SC",Georgia,serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--sans);
    font-size:17px;
    line-height:1.85;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input,textarea,select{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  p{margin:0}
  h1,h2,h3,h4{margin:0;font-weight:700}
  h1,h2{font-family:var(--serif)}
  h1{font-size:clamp(2.1rem,4.8vw,3.4rem);line-height:1.15;letter-spacing:-.01em}
  h2{font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.25;letter-spacing:-.005em}
  h3{font-size:1.18rem;line-height:1.5;font-weight:600;color:var(--cloud-ink)}
  ::selection{background:rgba(196,100,58,.2)}
  :focus-visible{outline:2px solid var(--clay);outline-offset:3px}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:1024px){ .wrap{padding-left:32px;padding-right:32px} }

  .section{padding-top:64px;padding-bottom:64px}
  .section-mist{background:var(--mist);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  @media (min-width:1024px){ .section{padding-top:104px;padding-bottom:104px} }

  .eyebrow{
    display:inline-block;
    font-size:13px;
    letter-spacing:.16em;
    color:var(--cloud-gap);
    font-weight:600;
    margin-bottom:14px;
  }
  .eyebrow-light{color:#9FB0A9}
  .section-head{max-width:720px;margin-bottom:40px}
  .section-sub{font-size:16px;color:var(--ink-soft);margin-top:14px}
  .h2-light{color:#F2EFE9}
  .prose p{font-size:17px;line-height:1.85;color:#3A4643}
  .prose p + p{margin-top:1.2em}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,240,.94);
    border-bottom:1px solid transparent;
    transition:border-color .3s var(--ease),background-color .3s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(247,245,240,.9);
    border-bottom-color:var(--line);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:72px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-size:19px;
    font-weight:700;
    letter-spacing:.04em;
    color:var(--cloud-ink);
    white-space:nowrap;
  }
  .brand svg{color:var(--cloud-ink);flex:none}
  .brand:hover{color:var(--cloud-gap)}
  .nav-links{display:none;align-items:center;gap:32px}
  .nav-link{
    position:relative;
    font-size:15px;
    color:var(--ink-soft);
    padding:6px 0;
    transition:color .25s var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:0;
    height:1px;
    background:var(--cloud-gap);
    transition:width .3s var(--ease);
  }
  .nav-link:hover{color:var(--cloud-ink)}
  .nav-link:hover::after{width:100%}
  .nav-link.active{color:var(--cloud-ink);font-weight:600}
  .nav-link.active::after{width:100%;bottom:-8px;background:var(--cloud-ink);height:1.5px}
  .header-actions{display:flex;align-items:center;gap:12px}
  .menu-toggle{
    display:inline-flex;
    align-items:center;
    gap:10px;
    min-height:44px;
    padding:6px 4px;
    background:transparent;
    border:0;
    font-size:15px;
    color:var(--cloud-ink);
    cursor:pointer;
  }
  .menu-bars{position:relative;width:20px;height:10px;display:inline-block}
  .menu-bars::before,.menu-bars::after{
    content:"";
    position:absolute;
    left:0;
    width:20px;
    height:1px;
    background:currentColor;
    transition:transform .3s var(--ease);
  }
  .menu-bars::before{top:0}
  .menu-bars::after{bottom:0}
  @media (min-width:1024px){
    .nav-links{display:flex}
    .menu-toggle{display:none}
  }

  /* ---------- mobile menu ---------- */
  .mobile-menu{
    position:fixed;
    inset:0;
    z-index:90;
    background:var(--paper);
    padding:18px 20px 40px;
    display:flex;
    flex-direction:column;
    transform:translateY(-102%);
    visibility:hidden;
    transition:transform .35s var(--ease),visibility .35s var(--ease);
  }
  .mobile-menu.is-open{transform:translateY(0);visibility:visible}
  .mobile-menu-head{display:flex;align-items:center;justify-content:space-between;height:56px}
  .mobile-menu-head span{font-size:19px;font-weight:700;letter-spacing:.04em;color:var(--cloud-ink)}
  .menu-close{
    position:relative;
    width:44px;height:44px;
    background:transparent;border:0;cursor:pointer;
  }
  .menu-close::before,.menu-close::after{
    content:"";
    position:absolute;
    left:11px;
    top:21px;
    width:22px;
    height:1px;
    background:var(--cloud-ink);
  }
  .menu-close::before{transform:rotate(45deg)}
  .menu-close::after{transform:rotate(-45deg)}
  .mobile-nav{margin-top:22px;display:flex;flex-direction:column}
  .mobile-link{
    font-size:20px;
    line-height:56px;
    color:var(--ink);
    border-bottom:1px solid var(--line);
    transition:color .25s var(--ease),padding-left .25s var(--ease);
  }
  .mobile-link:hover,.mobile-link.is-current{color:var(--cloud-gap);padding-left:6px}
  .mobile-cta{margin-top:28px}
  @media (min-width:1024px){ .mobile-menu{display:none} }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    letter-spacing:.02em;
    padding:13px 26px;
    min-height:46px;
    cursor:pointer;
    transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
  }
  .btn:active{transform:translateY(0)}
  .btn-primary{background:var(--clay);color:#fff;border-color:var(--clay)}
  .btn-primary:hover{background:var(--clay-deep);border-color:var(--clay-deep);transform:translateY(-1px)}
  .btn-outline{background:transparent;color:var(--cloud-ink);border-color:var(--cloud-ink)}
  .btn-outline:hover{background:var(--cloud-ink);color:var(--paper);transform:translateY(-1px)}
  .btn-ghost{background:transparent;color:var(--cloud-ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--cloud-gap);color:var(--cloud-gap);transform:translateY(-1px)}
  .btn-sm{padding:9px 18px;font-size:14px;min-height:40px}
  .btn-block{width:100%}

  .text-link{
    display:inline-block;
    font-size:15px;
    font-weight:600;
    color:var(--cloud-gap);
    padding-bottom:3px;
    background-image:linear-gradient(currentColor,currentColor);
    background-repeat:no-repeat;
    background-size:0% 1px;
    background-position:0 100%;
    transition:background-size .3s var(--ease),color .25s var(--ease);
  }
  .text-link:hover{background-size:100% 1px;color:var(--cloud-ink)}

  /* ---------- page hero ---------- */
  .page-hero{
    position:relative;
    overflow:hidden;
    background:var(--paper);
    border-bottom:1px solid var(--line);
  }
  .page-hero-bg{
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    opacity:.16;
    filter:saturate(.65);
  }
  .page-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(150deg,rgba(247,245,240,.5) 0%,rgba(247,245,240,.9) 55%,rgba(237,233,225,.98) 100%);
  }
  .page-hero-inner{position:relative;z-index:2;padding-top:56px;padding-bottom:56px;max-width:900px}
  @media (min-width:1024px){
    .page-hero-inner{padding-top:78px;padding-bottom:82px}
  }
  .breadcrumb{font-size:14px;color:var(--ink-soft);letter-spacing:.02em;margin-bottom:22px}
  .breadcrumb a{transition:color .25s var(--ease)}
  .breadcrumb a:hover{color:var(--cloud-gap)}
  .breadcrumb .sep{margin:0 8px;color:var(--line)}
  .breadcrumb .current{color:var(--ink-soft)}
  .page-hero h1{color:var(--cloud-ink);max-width:820px}
  .page-hero .lede{font-size:17px;line-height:1.85;color:#44514C;max-width:640px;margin-top:18px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

  /* ---------- work list (A) ---------- */
  .work-list{border-top:1px solid var(--line)}
  .work-item{
    display:grid;
    grid-template-columns:1fr;
    gap:8px;
    padding:26px 0 28px;
    border-bottom:1px solid var(--line);
    transition:background-color .3s var(--ease);
  }
  .work-item:hover{background:rgba(255,255,255,.55)}
  .work-num{
    font-family:var(--serif);
    font-size:15px;
    letter-spacing:.14em;
    color:var(--clay);
    font-variant-numeric:tabular-nums;
  }
  .work-body h3{margin-bottom:10px;transition:color .25s var(--ease)}
  .work-item:hover .work-body h3{color:var(--cloud-gap)}
  .work-body p{font-size:16px;line-height:1.8;color:var(--ink-soft);max-width:760px;margin-bottom:12px}
  @media (min-width:768px){
    .work-item{grid-template-columns:120px 1fr;gap:24px;align-items:start;padding:32px 0 34px}
    .work-item:hover{background:transparent;padding-left:8px}
  }

  /* ---------- step track ---------- */
  .step-track{display:grid;gap:26px}
  @media (min-width:768px){ .step-track{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px} }
  @media (min-width:1024px){ .step-track{grid-template-columns:repeat(4,minmax(0,1fr))} }
  .step{position:relative;padding-top:26px;border-top:1px solid var(--line)}
  .step::before{
    content:"";
    position:absolute;
    top:-4px;
    left:0;
    width:7px;
    height:7px;
    border-radius:50%;
    background:var(--cloud-gap);
  }
  .step-no{font-size:13px;letter-spacing:.14em;color:var(--cloud-gap);font-weight:600;margin-bottom:8px}
  .step h3{margin-bottom:8px}
  .step p{font-size:15.5px;line-height:1.8;color:var(--ink-soft)}

  /* ---------- scene list + picture ---------- */
  .scene-list{border-top:1px solid var(--line);margin-top:28px}
  .scene-list li{
    position:relative;
    padding:16px 0 16px 22px;
    border-bottom:1px solid var(--line);
    font-size:16.5px;
    color:#3A4643;
    line-height:1.75;
  }
  .scene-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:26px;
    width:8px;
    height:1px;
    background:var(--cloud-gap);
  }
  .pic-card{
    margin:0;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-1);
    transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  .pic-card:hover{transform:translateY(-2px);border-color:var(--cloud-gap);box-shadow:var(--shadow-2)}
  .pic-card img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s var(--ease)}
  .pic-card:hover img{transform:scale(1.03)}
  .pic-card figcaption{
    font-size:13.5px;
    color:var(--ink-soft);
    padding:14px 20px 18px;
    border-top:1px solid var(--line);
    background:var(--white);
  }

  /* ---------- data band ---------- */
  .data-band{background:var(--cloud-ink);color:#E4DFD6}
  .data-band .section-head{margin-bottom:44px}
  .data-grid{border-top:1px solid rgba(217,211,201,.22)}
  .data-cell{padding-top:30px;border-top:1px solid rgba(217,211,201,.22)}
  @media (min-width:1024px){
    .data-grid{border-top:0}
    .data-cell{border-top:1px solid rgba(217,211,201,.22);padding-right:24px}
  }
  .data-num{
    font-family:var(--serif);
    font-size:clamp(2.4rem,5vw,3.4rem);
    line-height:1;
    color:#F2EFE9;
    font-variant-numeric:tabular-nums;
  }
  .data-num span{font-size:.42em;margin-left:4px;color:#9FB0A9;font-family:var(--sans)}
  .data-label{font-size:14px;letter-spacing:.08em;color:#9FB0A9;margin-top:12px}
  .data-desc{font-size:15px;line-height:1.8;color:#C6C1B8;margin-top:8px}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:800px;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:20px;
    padding:22px 0;
    background:transparent;
    border:0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--cloud-ink);
    cursor:pointer;
    transition:color .25s var(--ease);
  }
  .faq-q:hover{color:var(--cloud-gap)}
  .faq-icon{position:relative;flex:none;width:16px;height:16px}
  .faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    background:var(--cloud-gap);
    transition:transform .3s var(--ease),opacity .3s var(--ease);
  }
  .faq-icon::before{left:0;top:7.5px;width:16px;height:1px}
  .faq-icon::after{left:7.5px;top:0;width:1px;height:16px}
  .faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
  .faq-a{
    max-height:0;
    overflow:hidden;
    opacity:0;
    transition:max-height .35s var(--ease),opacity .3s var(--ease);
  }
  .faq-item.is-open .faq-a{max-height:520px;opacity:1}
  .faq-a p{font-size:15.5px;line-height:1.85;color:var(--ink-soft);padding:0 34px 24px 0}

  /* ---------- contact / CTA ---------- */
  .cta-band{background:var(--mist);border-top:1px solid var(--line)}
  .cta-card{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);
    padding:30px 24px;
  }
  @media (min-width:1024px){ .cta-card{padding:44px 40px} }
  .contact-form{display:grid;gap:16px}
  .form-row{display:grid;gap:8px}
  .form-row label{font-size:14px;font-weight:600;color:var(--cloud-ink);letter-spacing:.02em}
  .form-row input,.form-row textarea{
    width:100%;
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    padding:12px 14px;
    font-size:15.5px;
    color:var(--ink);
    transition:border-color .25s var(--ease),background-color .25s var(--ease);
  }
  .form-row textarea{min-height:110px;resize:vertical}
  .form-row input::placeholder,.form-row textarea::placeholder{color:#94A19B}
  .form-row input:focus,.form-row textarea:focus{
    outline:none;
    border-color:var(--cloud-gap);
    background:var(--white);
  }
  .form-note{font-size:13.5px;color:var(--ink-soft);line-height:1.7}

  /* ---------- footer ---------- */
  .site-footer{background:var(--cloud-ink);color:#C6C1B8;padding-top:64px;margin-top:0}
  .footer-title{font-size:13px;letter-spacing:.14em;color:#8FA39B;font-weight:600;margin-bottom:14px}
  .footer-link{
    display:inline-block;
    padding:5px 0;
    font-size:15px;
    color:#C6C1B8;
    background-image:linear-gradient(currentColor,currentColor);
    background-repeat:no-repeat;
    background-size:0% 1px;
    background-position:0 100%;
    transition:background-size .3s var(--ease),color .25s var(--ease);
  }
  .footer-link:hover{color:#FFFFFF;background-size:100% 1px}
  .footer-bottom{
    border-top:1px solid rgba(217,211,201,.18);
    margin-top:56px;
    padding-top:22px;
    padding-bottom:34px;
  }

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
  .reveal.is-visible{opacity:1;transform:none}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none;transition:none}
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  }

/* roulang page: category2 */
:root{
    --ink:#1A2421;
    --cloud-ink:#22332F;
    --gap-teal:#3F5D55;
    --clay:#C4643A;
    --paper:#F7F5F0;
    --mist:#EDE9E1;
    --line:#D9D3C9;
    --muted:#5C6A65;
    --radius-card:10px;
    --radius-btn:3px;
    --radius-img:6px;
    --ease:cubic-bezier(.22,.61,.36,1);
    --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
    --font-song:"Songti SC","SimSun",serif;
  }
  *{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(--font-sans);
    font-size:17px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--clay);outline-offset:3px;}

  .wrap{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){
    .wrap{padding-left:32px;padding-right:32px;}
  }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,245,240,.94);
    border-bottom:1px solid transparent;
    transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background-color .3s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(247,245,240,.94);
    border-bottom-color:var(--line);
    box-shadow:0 1px 2px rgba(26,36,33,.05);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:72px;
    gap:24px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-size:19px;
    font-weight:700;
    letter-spacing:.04em;
    color:var(--cloud-ink);
    white-space:nowrap;
  }
  .brand svg{flex:none;}
  .nav-links{display:none;}
  @media (min-width:1024px){
    .nav-links{
      display:flex;
      align-items:center;
      gap:32px;
    }
  }
  .nav-link{
    position:relative;
    display:inline-block;
    padding:6px 0;
    font-size:15px;
    color:#3C4A45;
    transition:color .25s var(--ease),transform .25s var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:0;
    height:1px;
    background:currentColor;
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .3s var(--ease),background-color .3s var(--ease);
  }
  .nav-link:hover{color:var(--cloud-ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{
    color:var(--cloud-ink);
    transform:translateY(6px);
  }
  .nav-link.active::after{
    transform:scaleX(1);
    background:var(--clay);
  }
  .header-cta{display:none;}
  @media (min-width:1024px){
    .header-cta{display:block;}
  }
  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:9px 20px;
    font-size:14.5px;
    letter-spacing:.02em;
    color:var(--cloud-ink);
    border:1px solid var(--cloud-ink);
    border-radius:var(--radius-btn);
    background:transparent;
    transition:background-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
  }
  .btn-ghost:hover{
    background:var(--cloud-ink);
    color:#F7F5F0;
    transform:translateY(-1px);
  }
  .btn-ghost:active{transform:translateY(0);}

  .menu-toggle{
    display:inline-flex;
    align-items:center;
    gap:10px;
    min-height:44px;
    padding:0 2px;
    font-size:15px;
    color:var(--cloud-ink);
  }
  @media (min-width:1024px){
    .menu-toggle{display:none;}
  }
  .menu-bars{display:inline-flex;flex-direction:column;gap:5px;width:20px;}
  .menu-bars i{display:block;height:1px;background:var(--cloud-ink);}
  .mobile-menu{
    position:fixed;
    inset:0;
    z-index:80;
    background:var(--paper);
    padding:20px;
    display:flex;
    flex-direction:column;
    transform:translateY(-8px);
    opacity:0;
    pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease);
  }
  .mobile-menu.is-open{opacity:1;transform:none;pointer-events:auto;}
  .mobile-menu-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:52px;
  }
  .menu-close{
    position:relative;
    width:44px;height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
  }
  .menu-close span{
    position:absolute;
    width:20px;height:1px;
    background:var(--cloud-ink);
  }
  .menu-close span:first-child{transform:rotate(45deg);}
  .menu-close span:last-child{transform:rotate(-45deg);}
  .mobile-nav{margin-top:8px;border-top:1px solid var(--line);}
  .mobile-link{
    display:block;
    min-height:56px;
    line-height:56px;
    font-size:20px;
    color:var(--cloud-ink);
    border-bottom:1px solid var(--line);
  }
  .mobile-link.active{color:var(--clay);}

  /* ---------- 通用组件 ---------- */
  .section{padding:56px 0;}
  @media (min-width:1024px){
    .section{padding:104px 0;}
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    letter-spacing:.16em;
    color:var(--muted);
    text-transform:uppercase;
  }
  .eyebrow::before{
    content:"";
    width:22px;height:1px;
    background:var(--clay);
  }
  .h2{
    font-family:var(--font-song);
    font-size:clamp(1.55rem,3vw,2.3rem);
    line-height:1.25;
    font-weight:700;
    color:var(--cloud-ink);
    letter-spacing:-.01em;
  }
  .h3{
    font-size:1.2rem;
    font-weight:600;
    line-height:1.45;
    color:var(--cloud-ink);
  }
  .lead{
    font-size:17px;
    line-height:1.9;
    color:var(--muted);
  }
  .num{
    font-family:var(--font-song);
    font-variant-numeric:tabular-nums;
    font-weight:700;
  }
  .link-underline{
    display:inline-block;
    padding-bottom:2px;
    font-size:15px;
    color:var(--gap-teal);
    background-image:linear-gradient(currentColor,currentColor);
    background-position:0 100%;
    background-repeat:no-repeat;
    background-size:0% 1px;
    transition:background-size .3s var(--ease),color .25s var(--ease);
  }
  .link-underline:hover{
    color:var(--clay);
    background-size:100% 1px;
  }
  .tag{
    display:inline-flex;
    align-items:center;
    padding:5px 12px;
    font-size:13px;
    line-height:1.6;
    letter-spacing:.02em;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--muted);
    background:#fff;
  }
  .tag-clay{
    border-color:rgba(196,100,58,.45);
    color:var(--clay);
    background:rgba(196,100,58,.06);
  }
  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:14px 30px;
    font-size:15.5px;
    color:#fff;
    background:var(--clay);
    border-radius:var(--radius-btn);
    border:1px solid var(--clay);
    transition:background-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
  }
  .btn-primary:hover{
    background:#AC552F;
    border-color:#AC552F;
    transform:translateY(-1px);
    box-shadow:0 10px 28px -14px rgba(26,36,33,.35);
  }
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:14px 30px;
    font-size:15.5px;
    color:var(--cloud-ink);
    background:transparent;
    border:1px solid var(--cloud-ink);
    border-radius:var(--radius-btn);
    transition:background-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
  }
  .btn-outline:hover{
    background:var(--cloud-ink);
    color:#F7F5F0;
    transform:translateY(-1px);
  }
  .btn-outline:active{transform:translateY(0);}
  .rule{height:1px;background:var(--line);border:0;}
  .media-frame{
    overflow:hidden;
    border-radius:var(--radius-img);
    background:var(--mist);
  }
  .media-frame img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .45s var(--ease);
  }
  .media-frame:hover img{transform:scale(1.03);}

  /* ---------- 分类页头 ---------- */
  .cat-hero{
    position:relative;
    display:flex;
    align-items:center;
    min-height:260px;
    padding:56px 0 48px;
    background:#22332F url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
    color:#F1EFE9;
    overflow:hidden;
  }
  @media (min-width:1024px){
    .cat-hero{min-height:320px;padding:64px 0 56px;}
  }
  .cat-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(100deg,rgba(34,51,47,.94) 0%,rgba(34,51,47,.82) 46%,rgba(34,51,47,.46) 100%);
  }
  .cat-hero .wrap{position:relative;z-index:1;}
  .cat-hero h1{
    font-family:var(--font-song);
    font-size:clamp(1.9rem,4.4vw,3.1rem);
    line-height:1.2;
    font-weight:700;
    letter-spacing:-.01em;
    color:#FBF9F5;
    max-width:820px;
  }
  .cat-hero .sub{
    margin-top:18px;
    max-width:660px;
    font-size:17px;
    line-height:1.85;
    color:#C9CFC9;
  }
  .crumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13.5px;
    color:#9FB0A9;
    margin-bottom:22px;
  }
  .crumb a{color:#C6C1B8;border-bottom:1px solid transparent;transition:border-color .25s var(--ease),color .25s var(--ease);}
  .crumb a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.5);}
  .crumb .sep{opacity:.6;}
  .crumb .now{color:#E8E4DC;}

  /* ---------- 交错图文 ---------- */
  .zig{
    display:grid;
    grid-template-columns:1fr;
    gap:28px;
    align-items:center;
    padding:40px 0;
    border-top:1px solid var(--line);
  }
  .zig:first-of-type{border-top:0;padding-top:0;}
  @media (min-width:1024px){
    .zig{
      grid-template-columns:1fr 1fr;
      gap:64px;
      padding:56px 0;
    }
    .zig.reverse .zig-text{order:2;}
    .zig.reverse .zig-media{order:1;}
  }
  .zig-index{
    font-family:var(--font-song);
    font-size:14px;
    letter-spacing:.18em;
    color:var(--clay);
    margin-bottom:14px;
  }
  .zig-text p{
    margin-top:16px;
    font-size:16.5px;
    line-height:1.9;
    color:var(--muted);
  }
  .zig-text .link-underline{margin-top:22px;}
  .zig-media{
    aspect-ratio:4/3;
    border-radius:var(--radius-img);
    overflow:hidden;
    background:var(--mist);
  }
  .zig-media img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .45s var(--ease);
  }
  .zig-media:hover img{transform:scale(1.03);}

  /* ---------- 数据带 ---------- */
  .hud{
    background:var(--cloud-ink);
    color:#EDEAE3;
  }
  .hud .h2{color:#FBF9F5;}
  .hud .lead{color:#AEBAB4;}
  .hud-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:0;
    margin-top:40px;
    border-top:1px solid rgba(255,255,255,.14);
  }
  @media (min-width:768px){
    .hud-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media (min-width:1024px){
    .hud-grid{grid-template-columns:repeat(4,1fr);}
  }
  .hud-item{
    padding:28px 0 26px;
    border-bottom:1px solid rgba(255,255,255,.14);
  }
  @media (min-width:768px){
    .hud-item{padding:32px 24px 30px;border-right:1px solid rgba(255,255,255,.14);}
    .hud-item:nth-child(2n){border-right:0;}
  }
  @media (min-width:1024px){
    .hud-item{padding:36px 26px 34px;border-right:1px solid rgba(255,255,255,.14);}
    .hud-item:nth-child(2n){border-right:1px solid rgba(255,255,255,.14);}
    .hud-item:last-child{border-right:0;}
  }
  .hud-num{
    font-family:var(--font-song);
    font-variant-numeric:tabular-nums;
    font-size:clamp(2.1rem,3.6vw,2.9rem);
    line-height:1.1;
    font-weight:700;
    color:#FBF9F5;
  }
  .hud-num small{
    font-size:14px;
    font-family:var(--font-sans);
    font-weight:500;
    margin-left:6px;
    color:#AEBAB4;
    letter-spacing:.04em;
  }
  .hud-label{
    margin-top:12px;
    font-size:14px;
    line-height:1.7;
    color:#AEBAB4;
  }

  /* ---------- 对比面板 ---------- */
  .compare{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
    margin-top:44px;
  }
  @media (min-width:900px){
    .compare{grid-template-columns:1fr 1fr;gap:28px;}
  }
  .compare-col{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:28px 26px;
    transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
  }
  .compare-col:hover{
    border-color:var(--gap-teal);
    transform:translateY(-2px);
    box-shadow:0 10px 28px -14px rgba(26,36,33,.22);
  }
  .compare-col.better{border-color:rgba(63,93,85,.6);}
  .compare-title{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:15px;
    font-weight:600;
    letter-spacing:.02em;
    color:var(--cloud-ink);
    padding-bottom:16px;
    border-bottom:1px solid var(--line);
  }
  .dot{width:6px;height:6px;border-radius:50%;background:var(--muted);flex:none;}
  .dot-clay{background:var(--clay);}
  .compare-col ul{margin-top:8px;}
  .compare-col li{
    position:relative;
    padding:14px 0 14px 18px;
    font-size:16px;
    line-height:1.8;
    color:var(--muted);
    border-bottom:1px solid var(--mist);
  }
  .compare-col li:last-child{border-bottom:0;}
  .compare-col li::before{
    content:"";
    position:absolute;
    left:0;top:24px;
    width:6px;height:1px;
    background:var(--line);
  }
  .compare-col.better li{color:#38443F;}
  .compare-col.better li::before{background:var(--clay);width:8px;}

  /* ---------- FAQ ---------- */
  .faq-list{
    max-width:800px;
    margin:44px auto 0;
    border-top:1px solid var(--line);
  }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:20px;
    width:100%;
    padding:22px 0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    line-height:1.7;
    color:var(--cloud-ink);
    transition:color .25s var(--ease);
  }
  .faq-q:hover{color:var(--clay);}
  .faq-icon{
    position:relative;
    flex:none;
    width:18px;height:18px;
    margin-top:6px;
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--gap-teal);
    transition:transform .3s var(--ease),opacity .3s var(--ease);
  }
  .faq-icon::before{left:0;top:8.5px;width:18px;height:1px;}
  .faq-icon::after{left:8.5px;top:0;width:1px;height:18px;}
  .faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .35s var(--ease);
  }
  .faq-a p{
    padding:0 0 24px;
    font-size:15.5px;
    line-height:1.85;
    color:var(--muted);
    max-width:700px;
  }

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--cloud-ink);
    color:#EDEAE3;
    padding:72px 0;
  }
  @media (min-width:1024px){
    .cta-band{padding:104px 0;}
  }
  .cta-band h2{
    font-family:var(--font-song);
    font-size:clamp(1.55rem,3vw,2.3rem);
    line-height:1.25;
    font-weight:700;
    color:#FBF9F5;
  }
  .cta-band p{
    margin-top:16px;
    max-width:620px;
    font-size:16.5px;
    line-height:1.85;
    color:#AEBAB4;
  }
  .cta-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:32px;
  }
  .cta-band .btn-outline{
    color:#F1EFE9;
    border-color:rgba(241,239,233,.65);
  }
  .cta-band .btn-outline:hover{
    background:#F1EFE9;
    color:var(--cloud-ink);
    border-color:#F1EFE9;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--cloud-ink);
    color:#E8E4DC;
    padding-top:64px;
    border-top:1px solid rgba(255,255,255,.08);
  }
  @media (min-width:1024px){
    .site-footer{padding-top:80px;}
  }
  .footer-title{
    font-size:13.5px;
    letter-spacing:.14em;
    color:#9FB0A9;
    margin-bottom:16px;
  }
  .footer-link{
    display:inline-block;
    padding:7px 0;
    font-size:15px;
    color:#C6C1B8;
    background-image:linear-gradient(currentColor,currentColor);
    background-position:0 100%;
    background-repeat:no-repeat;
    background-size:0% 1px;
    transition:background-size .3s var(--ease),color .25s var(--ease);
  }
  .footer-link:hover{color:#fff;background-size:100% 1px;}
  .footer-bottom{
    margin-top:52px;
    padding-top:24px;
    padding-bottom:28px;
    border-top:1px solid rgba(255,255,255,.12);
  }

  /* ---------- 进入视口 ---------- */
  .reveal{
    opacity:0;
    transform:translateY(16px);
    transition:opacity .5s var(--ease),transform .5s var(--ease);
  }
  .reveal.is-visible{
    opacity:1;
    transform:none;
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;transition:none;}
    .nav-link,.nav-link::after,.link-underline,.media-frame img,.zig-media img,
    .btn-primary,.btn-outline,.btn-ghost,.compare-col,.footer-link,.faq-a,.faq-icon::after{
      transition:none !important;
    }
  }

/* roulang page: category3 */
:root{
    --ink:#22332F;
    --moss:#3F5D55;
    --clay:#C4643A;
    --paper:#F7F5F0;
    --mist:#EDE9E1;
    --card:#FFFFFF;
    --text:#1A2421;
    --sub:#5C6A65;
    --line:#D9D3C9;
    --r-btn:3px;
    --r-card:10px;
    --r-img:6px;
    --sh-1:0 1px 2px rgba(26,36,33,.05);
    --sh-2:0 10px 28px -14px rgba(26,36,33,.22);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
    font-size:17px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;}
  h1,h2,h3,h4,p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--clay);outline-offset:3px;}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .wrap{padding:0 32px;} }

  .serif{font-family:"Songti SC","SimSun","Noto Serif SC",serif;}
  .num-tab{font-variant-numeric:tabular-nums;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(247,245,240,.92);
    border-bottom:1px solid transparent;
    transition:border-color .3s var(--ease),background .3s var(--ease);
  }
  .site-header.scrolled{border-bottom-color:var(--line);background:rgba(247,245,240,.96);}
  .header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
  .brand{
    display:inline-flex;align-items:center;gap:9px;
    font-size:19px;font-weight:700;letter-spacing:.04em;color:var(--ink);
    flex:none;
  }
  .brand svg{flex:none;}
  .nav-links{display:none;align-items:center;gap:32px;}
  @media (min-width:1024px){ .nav-links{display:flex;} }
  .nav-link{
    position:relative;font-size:15px;color:var(--sub);
    padding:6px 0;transition:color .28s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
    background:var(--moss);transition:width .3s var(--ease);
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{width:100%;}
  .nav-link.active{color:var(--ink);font-weight:600;}
  .nav-link.active::after{width:100%;background:var(--ink);}
  .header-cta{display:none;}
  @media (min-width:1024px){ .header-cta{display:block;} }
  .menu-toggle{
    display:inline-flex;align-items:center;gap:10px;
    min-height:44px;padding:0 4px;background:none;border:0;cursor:pointer;
    font-size:15px;color:var(--ink);
  }
  @media (min-width:1024px){ .menu-toggle{display:none;} }
  .menu-bars{position:relative;display:block;width:20px;height:12px;}
  .menu-bars i{position:absolute;left:0;display:block;width:20px;height:1px;background:var(--ink);transition:transform .3s var(--ease);}
  .menu-bars i:first-child{top:0;}
  .menu-bars i:last-child{bottom:0;}
  .menu-toggle.is-open .menu-bars i:first-child{transform:translateY(5.5px) rotate(45deg);}
  .menu-toggle.is-open .menu-bars i:last-child{transform:translateY(-5.5px) rotate(-45deg);}

  .mobile-menu{
    position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
    background:var(--paper);overflow-y:auto;
    opacity:0;visibility:hidden;
    transition:opacity .3s var(--ease),visibility .3s var(--ease);
  }
  .mobile-menu.is-open{opacity:1;visibility:visible;}
  .mobile-menu-inner{padding-top:12px;padding-bottom:48px;}
  .mobile-menu-title{font-size:13px;letter-spacing:.14em;color:var(--sub);padding:14px 0;}
  .mobile-link{
    display:flex;align-items:center;justify-content:space-between;
    font-size:20px;line-height:56px;min-height:56px;
    border-bottom:1px solid var(--line);color:var(--ink);
  }
  .mobile-link.active{color:var(--clay);font-weight:600;}
  .mobile-link span{font-size:14px;color:var(--sub);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;letter-spacing:.02em;border:1px solid transparent;
    cursor:pointer;transition:background-color .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease),transform .28s var(--ease);
    white-space:nowrap;
  }
  .btn:active{transform:translateY(0);}
  .btn-primary{background:var(--clay);color:#fff;}
  .btn-primary:hover{background:#a9532e;transform:translateY(-1px);}
  .btn-outline{border-color:var(--ink);color:var(--ink);background:transparent;}
  .btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
  .btn-ghost-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent;}
  .btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px);}
  .btn-soft{border-color:var(--line);background:#fff;color:var(--ink);}
  .btn-soft:hover{border-color:var(--moss);color:var(--moss);transform:translateY(-1px);}

  .tlink{
    display:inline-block;font-size:15px;color:var(--moss);
    background-image:linear-gradient(currentColor,currentColor);
    background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
    transition:background-size .3s var(--ease),color .3s var(--ease);
  }
  .tlink:hover{color:var(--ink);background-size:100% 1px;}

  /* ---------- 板块 ---------- */
  .section{padding:64px 0;}
  @media (min-width:1024px){ .section{padding:104px 0;} }
  .section-mist{background:var(--mist);}
  .eyebrow{
    display:inline-block;font-size:13px;font-weight:600;letter-spacing:.14em;
    color:var(--clay);margin-bottom:14px;
  }
  .eyebrow-light{color:#E29C79;}
  .h2{
    font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.25;font-weight:700;
    letter-spacing:-.005em;color:var(--ink);
  }
  .h3{font-size:1.2rem;line-height:1.5;font-weight:600;color:var(--ink);}
  .lead{font-size:17px;line-height:1.9;color:var(--sub);}

  /* ---------- 页头 ---------- */
  .page-head{
    padding-top:132px;padding-bottom:64px;min-height:300px;
    background-image:
      linear-gradient(104deg, rgba(34,51,47,.94) 0%, rgba(34,51,47,.82) 46%, rgba(34,51,47,.58) 100%),
      url('/assets/images/backpic/back-3.png');
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--line);
    display:flex;align-items:center;
  }
  @media (min-width:1024px){ .page-head{padding-top:148px;padding-bottom:80px;} }
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.66);margin-bottom:22px;}
  .crumb a:hover{color:#fff;background-size:100% 1px;}
  .crumb .sep{opacity:.5;}
  .crumb .current{color:rgba(255,255,255,.9);}
  .page-title{
    font-family:"Songti SC","SimSun","Noto Serif SC",serif;
    font-size:clamp(1.9rem,4vw,2.9rem);line-height:1.2;font-weight:700;
    letter-spacing:-.01em;color:#fff;max-width:880px;
  }
  .page-sub{margin-top:18px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.84);max-width:660px;}

  /* ---------- 卡片 / 列表 ---------- */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    padding:28px;transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
  }
  .card:hover{border-color:var(--moss);transform:translateY(-2px);box-shadow:var(--sh-2);}
  .card-img{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--mist);}
  .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .card-img:hover img{transform:scale(1.03);}

  .badge{
    display:inline-block;padding:4px 12px;border-radius:999px;
    font-size:13px;line-height:1.7;letter-spacing:.02em;
    border:1px solid var(--line);color:var(--moss);background:#fff;
  }
  .badge-clay{border-color:rgba(196,100,58,.45);color:var(--clay);}

  .divider{height:1px;background:var(--line);border:0;margin:0;}

  .numlist{border-top:1px solid var(--line);}
  .numlist li{
    display:grid;grid-template-columns:1fr;gap:10px;
    padding:26px 0;border-bottom:1px solid var(--line);
  }
  @media (min-width:768px){ .numlist li{grid-template-columns:78px 1fr;gap:26px;align-items:start;} }
  .num{font-family:"Songti SC","SimSun","Noto Serif SC",serif;font-size:20px;color:var(--clay);font-variant-numeric:tabular-nums;letter-spacing:.04em;}
  .numlist h3{font-size:1.12rem;font-weight:600;color:var(--ink);margin-bottom:6px;}
  .numlist p{font-size:16px;line-height:1.85;color:var(--sub);max-width:720px;}

  .dot-list li{position:relative;padding-left:20px;font-size:16px;line-height:1.85;color:var(--sub);margin-bottom:12px;}
  .dot-list li::before{content:"";position:absolute;left:0;top:.85em;width:5px;height:5px;border-radius:50%;background:var(--clay);}

  .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;}
  @media (min-width:900px){ .stat-grid{grid-template-columns:repeat(4,1fr);} }
  .stat{padding:28px 20px;border-top:1px solid var(--line);}
  @media (min-width:900px){
    .stat{border-top:1px solid var(--line);border-left:1px solid var(--line);}
    .stat:first-child{border-left:0;}
  }
  .stat-num{font-family:"Songti SC","SimSun","Noto Serif SC",serif;font-size:clamp(2rem,4vw,2.6rem);line-height:1;color:var(--ink);font-variant-numeric:tabular-nums;}
  .stat-num small{font-size:15px;margin-left:4px;color:var(--sub);font-family:inherit;}
  .stat p{margin-top:12px;font-size:14px;line-height:1.75;color:var(--sub);}

  .step-grid{display:grid;grid-template-columns:1fr;gap:0;border-top:1px solid var(--line);}
  @media (min-width:900px){ .step-grid{grid-template-columns:repeat(4,1fr);} }
  .step{padding:30px 0;border-bottom:1px solid var(--line);}
  @media (min-width:900px){
    .step{padding:34px 28px;border-bottom:0;border-left:1px solid var(--line);}
    .step:first-child{border-left:0;padding-left:0;}
  }
  .step-no{font-size:13px;letter-spacing:.14em;color:var(--clay);font-variant-numeric:tabular-nums;}
  .step h3{font-size:1.1rem;font-weight:600;color:var(--ink);margin:12px 0 10px;}
  .step p{font-size:15px;line-height:1.8;color:var(--sub);}

  /* ---------- FAQ ---------- */
  .faq{max-width:800px;margin:0 auto;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;background:none;border:0;cursor:pointer;text-align:left;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  }
  .faq-q:hover{color:var(--moss);}
  .faq-icon{position:relative;flex:none;width:16px;height:16px;}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--moss);transition:transform .3s var(--ease),opacity .3s var(--ease);}
  .faq-icon::before{left:0;top:7.5px;width:16px;height:1px;}
  .faq-icon::after{left:7.5px;top:0;width:1px;height:16px;}
  .faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease);}
  .faq-a p{padding-bottom:22px;font-size:15.5px;line-height:1.85;color:var(--sub);max-width:680px;}

  /* ---------- 表单 ---------- */
  .field{display:flex;flex-direction:column;gap:8px;}
  .field label{font-size:14px;color:#C6C1B8;}
  .field input,.field textarea,.field select{
    width:100%;background:rgba(255,255,255,.06);color:#fff;
    border:1px solid rgba(255,255,255,.28);border-radius:var(--r-btn);
    padding:12px 14px;font-size:15px;line-height:1.6;
    transition:border-color .28s var(--ease),background .28s var(--ease);
  }
  .field textarea{min-height:104px;resize:vertical;}
  .field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.45);}
  .field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:#E29C79;background:rgba(255,255,255,.1);}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--ink);color:#fff;padding:80px 0;}
  @media (min-width:1024px){ .cta-band{padding:104px 0;} }
  .cta-band h2{font-family:"Songti SC","SimSun","Noto Serif SC",serif;font-size:clamp(1.6rem,3.1vw,2.3rem);line-height:1.3;font-weight:700;color:#fff;}
  .cta-band p{margin-top:18px;font-size:16.5px;line-height:1.85;color:#C6C1B8;max-width:620px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#202E2A;color:#C6C1B8;padding:72px 0 28px;}
  .footer-title{font-size:14px;font-weight:600;letter-spacing:.12em;color:#fff;margin-bottom:16px;}
  .footer-link{
    display:inline-block;padding:6px 0;font-size:15px;color:#C6C1B8;
    background-image:linear-gradient(currentColor,currentColor);
    background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
    transition:background-size .3s var(--ease),color .3s var(--ease);
  }
  .footer-link:hover{color:#fff;background-size:100% 1px;}
  .footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.14);padding-top:22px;}

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
  .reveal.is-visible{opacity:1;transform:none;}
  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important;}
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category4 */
:root{
    --ky-ink:#22332F;
    --ky-moss:#3F5D55;
    --ky-clay:#C4643A;
    --ky-clay-dark:#A9502B;
    --ky-paper:#F7F5F0;
    --ky-mist:#EDE9E1;
    --ky-line:#D9D3C9;
    --ky-text:#1A2421;
    --ky-sub:#5C6A65;
    --radius-btn:3px;
    --radius-card:10px;
    --radius-img:6px;
    --shadow-soft:0 1px 2px rgba(26,36,33,.05);
    --shadow-lift:0 10px 28px -14px rgba(26,36,33,.22);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--ky-paper);
    color:var(--ky-text);
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:17px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%}
  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}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid var(--ky-clay);outline-offset:3px}
  [hidden]{display:none !important}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.wrap{padding-left:32px;padding-right:32px}}

  .skip-link{position:absolute;left:-9999px;top:0;background:var(--ky-ink);color:#fff;padding:10px 16px;border-radius:var(--radius-btn);z-index:200}
  .skip-link:focus{left:16px;top:16px}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .3s var(--ease),border-color .3s var(--ease);
  }
  .site-header.is-stuck{
    background:rgba(247,245,240,.92);
    border-bottom-color:var(--ky-line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
  .brand{
    display:inline-flex;align-items:center;gap:8px;
    font-size:19px;font-weight:700;letter-spacing:.04em;color:var(--ky-ink);
    flex:0 0 auto;
  }
  .brand svg{flex:0 0 auto}
  .nav-links{display:flex;align-items:center;gap:32px}
  .nav-link{
    position:relative;display:inline-block;
    font-size:15px;color:var(--ky-sub);padding:6px 0;
    transition:color .3s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
    background:var(--ky-moss);
    transform:scaleX(0);transform-origin:left;
    transition:transform .3s var(--ease);
  }
  .nav-link:hover{color:var(--ky-ink)}
  .nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
  .nav-link.active{color:var(--ky-ink)}
  .nav-link.active::before{
    content:"";position:absolute;left:50%;bottom:-12px;width:4px;height:4px;
    margin-left:-2px;border-radius:50%;background:var(--ky-moss);
  }
  .header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:var(--radius-btn);
    font-size:15px;line-height:1.2;letter-spacing:.02em;
    border:1px solid transparent;
    transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
  }
  .btn:active{transform:translateY(0)}
  .btn-primary{background:var(--ky-clay);color:#fff}
  .btn-primary:hover{background:var(--ky-clay-dark);transform:translateY(-1px)}
  .btn-ghost{border-color:var(--ky-ink);color:var(--ky-ink);background:transparent}
  .btn-ghost:hover{background:var(--ky-ink);color:#fff;transform:translateY(-1px)}
  .btn-light{background:#F7F5F0;color:var(--ky-ink)}
  .btn-light:hover{background:#fff;transform:translateY(-1px)}
  .btn-outline-light{border-color:rgba(247,245,240,.55);color:#F7F5F0}
  .btn-outline-light:hover{background:rgba(247,245,240,.12);transform:translateY(-1px)}
  .btn-sm{padding:8px 16px;font-size:14px}
  .btn-row{display:flex;flex-wrap:wrap;gap:14px}

  .menu-toggle{
    display:none;align-items:center;gap:10px;
    font-size:14px;letter-spacing:.04em;color:var(--ky-ink);
    padding:10px 4px;min-height:44px;
  }
  .menu-bars{display:inline-flex;flex-direction:column;gap:5px;width:18px}
  .menu-bars i{display:block;height:1px;background:var(--ky-ink);transition:transform .3s var(--ease),opacity .3s var(--ease)}
  body.nav-open .menu-bars i:first-child{transform:translateY(3px) rotate(45deg)}
  body.nav-open .menu-bars i:last-child{transform:translateY(-3px) rotate(-45deg)}

  .mobile-nav{
    position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
    background:var(--ky-paper);border-top:1px solid var(--ky-line);
    padding:8px 20px 40px;overflow-y:auto;
  }
  .mobile-link{
    display:flex;align-items:center;justify-content:space-between;
    font-size:20px;line-height:1.2;min-height:56px;padding:16px 0;
    border-bottom:1px solid var(--ky-line);color:var(--ky-ink);
  }
  .mobile-link span{font-size:13px;color:var(--ky-sub);letter-spacing:.06em}
  .mobile-link.active{color:var(--ky-clay)}
  .mobile-cta{margin-top:28px;display:flex;flex-direction:column;gap:14px}

  @media (max-width:960px){
    .nav-links{display:none}
    .menu-toggle{display:inline-flex}
    .header-actions .btn-sm{display:none}
  }

  /* ---------- sections ---------- */
  .section{padding:64px 0}
  @media (min-width:768px){.section{padding:100px 0}}
  .section-mist{background:var(--ky-mist);border-top:1px solid var(--ky-line);border-bottom:1px solid var(--ky-line)}
  .section-head{max-width:760px}
  .eyebrow{
    display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--ky-moss);
    padding:5px 12px;border:1px solid var(--ky-line);border-radius:999px;background:#fff;
  }
  .h2{
    font-family:"Songti SC","SimSun",serif;
    font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.25;font-weight:700;
    letter-spacing:-.01em;color:var(--ky-ink);
  }
  .h3{font-size:1.15rem;line-height:1.5;font-weight:600;color:var(--ky-ink)}
  .lead{font-size:17px;line-height:1.9;color:var(--ky-sub)}
  .divider-short{width:48px;height:2px;background:var(--ky-clay);margin:20px 0 0}

  /* ---------- page head ---------- */
  .page-head{position:relative;overflow:hidden;background:var(--ky-mist);border-bottom:1px solid var(--ky-line)}
  .page-head-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    opacity:.3;filter:saturate(.72);
  }
  .page-head::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(247,245,240,.97) 0%,rgba(247,245,240,.86) 46%,rgba(247,245,240,.45) 100%);
  }
  .page-head-inner{position:relative;z-index:2;padding-top:56px;padding-bottom:56px}
  @media (min-width:768px){.page-head-inner{padding-top:72px;padding-bottom:72px}}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--ky-sub);margin-bottom:24px}
  .crumbs a{color:var(--ky-sub);background-image:linear-gradient(currentColor,currentColor);background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .3s var(--ease),color .3s var(--ease)}
  .crumbs a:hover{color:var(--ky-ink);background-size:100% 1px}
  .crumbs .sep{color:var(--ky-line)}
  .crumbs .current{color:var(--ky-sub)}
  .page-title{
    font-family:"Songti SC","SimSun",serif;
    font-size:clamp(2.2rem,5.2vw,3.8rem);line-height:1.15;font-weight:700;
    letter-spacing:-.01em;color:var(--ky-ink);max-width:18em;
  }
  .page-sub{margin-top:20px;max-width:620px;font-size:17px;line-height:1.85;color:var(--ky-sub)}
  .page-head .btn-row{margin-top:32px}

  /* ---------- intro ---------- */
  .intro-grid{display:grid;gap:32px}
  @media (min-width:1024px){.intro-grid{grid-template-columns:1fr 1.35fr;gap:72px;align-items:start}}
  .intro-copy p + p{margin-top:1.2em}

  /* ---------- duo blocks ---------- */
  .duo-grid{display:grid;gap:40px}
  @media (min-width:1024px){.duo-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:start}}
  .duo-blocks{display:grid;gap:32px}
  @media (min-width:640px){.duo-blocks{grid-template-columns:1fr 1fr;gap:36px 44px}}
  .duo-block{padding-top:22px;border-top:1px solid var(--ky-line)}
  .duo-block p{margin-top:10px;font-size:16px;line-height:1.85;color:var(--ky-sub)}
  .duo-idx{font-family:"Songti SC","SimSun",serif;font-size:13px;letter-spacing:.12em;color:var(--ky-clay);display:block;margin-bottom:8px}

  .media-card{
    background:#fff;border:1px solid var(--ky-line);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow-soft);
    transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
  }
  .media-card:hover{border-color:var(--ky-moss);transform:translateY(-2px);box-shadow:var(--shadow-lift)}
  .media-card img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s var(--ease)}
  .media-card:hover img{transform:scale(1.03)}
  .media-card figcaption{padding:16px 22px;font-size:14px;line-height:1.7;color:var(--ky-sub);border-top:1px solid var(--ky-line)}

  /* ---------- numbered list ---------- */
  .num-list{display:grid;border-top:1px solid var(--ky-line)}
  @media (min-width:900px){.num-list{grid-template-columns:1fr 1fr;column-gap:64px}}
  .num-item{
    display:grid;grid-template-columns:56px 1fr;gap:16px;
    padding:26px 0;border-bottom:1px solid var(--ky-line);
  }
  @media (min-width:900px){.num-item{padding:30px 0}}
  .num-idx{
    font-family:"Songti SC","SimSun",serif;font-size:15px;letter-spacing:.08em;
    color:var(--ky-clay);font-variant-numeric:tabular-nums;padding-top:3px;
  }
  .num-item h3{font-size:1.12rem;font-weight:600;color:var(--ky-ink);line-height:1.5}
  .num-item p{margin-top:8px;font-size:15.5px;line-height:1.85;color:var(--ky-sub)}

  /* ---------- phase track ---------- */
  .phase-track{display:grid;gap:34px;position:relative}
  @media (min-width:900px){
    .phase-track{grid-template-columns:repeat(5,1fr);gap:28px}
    .phase-track::before{content:"";position:absolute;left:0;right:0;top:5px;height:1px;background:var(--ky-line)}
  }
  .phase-item{position:relative;padding-top:28px}
  .phase-node{
    position:absolute;left:0;top:0;width:11px;height:11px;border-radius:50%;
    background:var(--ky-paper);border:1px solid var(--ky-moss);z-index:1;
  }
  @media (min-width:900px){
    .phase-node{left:0}
    .phase-item:first-child .phase-node{background:var(--ky-clay);border-color:var(--ky-clay)}
  }
  .phase-when{
    font-size:13px;letter-spacing:.1em;color:var(--ky-clay);
    font-variant-numeric:tabular-nums;margin-bottom:10px;
  }
  .phase-item h3{font-size:1.08rem;font-weight:600;color:var(--ky-ink);line-height:1.5}
  .phase-item p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--ky-sub)}

  /* ---------- stat band ---------- */
  .stat-band{
    display:grid;gap:30px;
    background:#fff;border:1px solid var(--ky-line);border-radius:var(--radius-card);
    padding:36px 26px;
  }
  @media (min-width:760px){.stat-band{grid-template-columns:repeat(4,1fr);gap:28px;padding:52px 44px}}
  .stat + .stat{border-top:1px solid var(--ky-line);padding-top:26px}
  @media (min-width:760px){.stat + .stat{border-top:0;border-left:1px solid var(--ky-line);padding-top:0;padding-left:28px}}
  .stat-num{
    font-family:"Songti SC","SimSun",serif;
    font-size:clamp(1.9rem,4vw,2.5rem);line-height:1.1;color:var(--ky-ink);
    font-variant-numeric:tabular-nums;letter-spacing:-.01em;
  }
  .stat-num span{font-family:system-ui,sans-serif;font-size:.4em;color:var(--ky-sub);margin-left:6px;letter-spacing:.04em}
  .stat-label{margin-top:10px;font-size:14px;line-height:1.7;color:var(--ky-sub)}

  /* ---------- faq ---------- */
  .faq-list{max-width:820px;border-top:1px solid var(--ky-line)}
  .faq-item{border-bottom:1px solid var(--ky-line)}
  .faq-q{
    display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
    width:100%;text-align:left;padding:22px 0;min-height:44px;
    font-size:17px;font-weight:600;color:var(--ky-ink);line-height:1.6;
    transition:color .25s var(--ease);
  }
  .faq-q:hover{color:var(--ky-moss)}
  .faq-icon{position:relative;flex:0 0 auto;width:14px;height:14px;margin-top:6px}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--ky-moss);
    transition:transform .3s var(--ease),opacity .3s var(--ease);
  }
  .faq-icon::before{left:0;top:6px;width:14px;height:1px}
  .faq-icon::after{left:6px;top:0;width:1px;height:14px}
  .faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
  .faq-a-inner{padding:0 0 24px;font-size:15.5px;line-height:1.85;color:var(--ky-sub);max-width:720px}

  /* ---------- cta / contact ---------- */
  .cta-band{background:var(--ky-ink);color:#EFEBE3;padding:72px 0}
  @media (min-width:768px){.cta-band{padding:104px 0}}
  .cta-grid{display:grid;gap:44px}
  @media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:72px;align-items:start}}
  .cta-band .h2{color:#F7F5F0}
  .cta-band .lead{color:#C6C1B8}
  .cta-band .btn-row{margin-top:32px}
  .cta-note{margin-top:22px;font-size:14px;line-height:1.8;color:#9FB0A9}

  .contact-card{
    background:#fff;border-radius:var(--radius-card);padding:28px 24px;
    box-shadow:0 18px 40px -28px rgba(0,0,0,.5);
  }
  @media (min-width:768px){.contact-card{padding:36px 36px}}
  .field{display:block;margin-bottom:18px}
  .label{display:block;font-size:13.5px;letter-spacing:.02em;color:var(--ky-sub);margin-bottom:8px}
  .input,.textarea{
    width:100%;border:1px solid var(--ky-line);border-radius:var(--radius-btn);
    background:#fff;padding:12px 14px;font-size:15.5px;line-height:1.6;color:var(--ky-text);
    transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .textarea{min-height:112px;resize:vertical}
  .input:focus,.textarea:focus{outline:none;border-color:var(--ky-clay);box-shadow:0 0 0 3px rgba(196,100,58,.15)}
  .form-tip{font-size:13.5px;line-height:1.7;color:var(--ky-sub);margin-top:14px}
  .submit-btn{width:100%;margin-top:6px}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ky-ink);color:#C6C1B8;padding:72px 0 0}
  .footer-title{font-size:14px;letter-spacing:.08em;color:#F2EFE9;margin-bottom:16px}
  .footer-link{
    display:inline-block;padding:6px 0;font-size:15px;color:#C6C1B8;
    background-image:linear-gradient(currentColor,currentColor);
    background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
    transition:background-size .3s var(--ease),color .3s var(--ease);
  }
  .footer-link:hover{color:#fff;background-size:100% 1px}
  .footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:24px 0 32px}

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

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