/* roulang page: index */
:root{
  --brand-900:#0F2E28;
  --brand-700:#17453B;
  --brand-500:#2C6B57;
  --accent-600:#C2552B;
  --accent-400:#E08A5B;
  --celadon:#9CC6B4;
  --paper:#FBF7F1;
  --card:#FFFDFA;
  --layer:#F3ECE1;
  --line:#E4DACB;
  --ink:#17211D;
  --sub:#5A6660;
  --cream:#EDE6DA;
  --radius:18px;
}
*,*::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:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:18px;padding-right:18px;}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

/* 母题 A：九点阵 */
.dots-mark{
  width:20px;height:20px;flex:none;display:inline-block;
  background-image:radial-gradient(currentColor 1.6px,transparent 1.7px);
  background-size:7px 7px;background-position:0 0;
  color:var(--brand-500);
}
.dots-mark.accent{color:var(--accent-600);}

/* 编号轴 */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent-600);
}
.eyebrow .num{font-variant-numeric:tabular-nums;}
.eyebrow .sep{display:inline-block;width:1px;height:12px;background:rgba(194,85,43,.45);}
.num{font-variant-numeric:tabular-nums;}

/* 母题 B：入口拱门 */
.arch{
  overflow:hidden;
  border-radius:50% 50% var(--radius) var(--radius) / 30% 30% var(--radius) var(--radius);
  border:1px solid var(--line);
}
.arch-sm{
  overflow:hidden;
  border-radius:50% 50% 14px 14px / 22% 22% 14px 14px;
  border:1px solid var(--line);
}

/* Hero 背景点阵 */
.hero-dots{
  background-image:radial-gradient(rgba(44,107,87,.20) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.30;
}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:12px;font-size:15px;font-weight:600;letter-spacing:.02em;transition:background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;border:1px solid transparent;cursor:pointer;}
.btn-primary{background:var(--brand-900);color:#FFFDFA;box-shadow:0 1px 2px rgba(23,33,29,.08);}
.btn-primary:hover{background:#0A241F;transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,46,40,.16);}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 2px rgba(23,33,29,.10);}
.btn-outline{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-outline:hover{background:var(--layer);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-accent{background:var(--accent-600);color:#FFFDFA;}
.btn-accent:hover{background:#A8451F;transform:translateY(-1px);box-shadow:0 10px 22px rgba(194,85,43,.22);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}

/* 链接 */
.link-text{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(194,85,43,.5);transition:color .2s ease-out;}
.link-text:hover{color:var(--accent-600);}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 11px;border-radius:999px;background:#E4F0E9;color:#0F2E28;font-size:12.5px;font-weight:600;letter-spacing:.02em;line-height:1.7;}
.badge-line{border:1px solid rgba(15,46,40,.16);background:transparent;color:var(--brand-700);}

/* 卡片 */
.card-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 1px 2px rgba(23,33,29,.05);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;display:block;}
.card-item:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(15,46,40,.10);border-color:#D6C8B4;}
.card-item:hover .card-title{color:var(--brand-700);}
.card-item:hover .arrow{transform:translateX(4px);}
.card-title{transition:color .2s ease-out;}
.arrow{transition:transform .2s ease-out;}
.thumb{overflow:hidden;border-radius:14px;}
.thumb img{transition:transform .3s ease-out;}
.card-item:hover .thumb img{transform:scale(1.03);}

/* FAQ 手风琴 */
.faq details{border-bottom:1px solid var(--line);}
.faq details summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 12px;border-radius:10px;transition:background-color .2s ease-out;}
.faq details summary::-webkit-details-marker{display:none;}
.faq details summary:hover{background:var(--layer);}
.faq details summary .qtext{font-size:17px;font-weight:600;line-height:1.6;transition:color .2s ease-out;}
.faq details[open] summary .qtext{color:var(--brand-700);}
.faq .plus{width:20px;height:20px;flex:none;position:relative;transition:transform .2s ease-out;}
.faq .plus::before,.faq .plus::after{content:"";position:absolute;background:var(--brand-500);border-radius:2px;}
.faq .plus::before{left:0;top:9px;width:20px;height:2px;}
.faq .plus::after{left:9px;top:0;width:2px;height:20px;}
.faq details[open] .plus{transform:rotate(45deg);}
.faq .answer{padding:0 12px 20px;font-size:15px;line-height:1.9;color:var(--sub);}

/* 编号轴分隔 */
.axis-item{padding:6px 0;}
@media (min-width:768px){
  .axis-item + .axis-item{border-left:1px solid var(--line);padding-left:28px;}
}
@media (max-width:767px){
  .axis-item + .axis-item{border-top:1px solid var(--line);padding-top:22px;margin-top:22px;}
}

/* 移动端底部 Tab */
.mtab{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--paper);border-top:1px solid var(--line);box-shadow:0 -2px 12px rgba(15,46,40,.06);padding-bottom:env(safe-area-inset-bottom);}
.mtab a{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;height:60px;font-size:11px;color:var(--sub);transition:color .2s ease-out;}
.mtab a svg{width:22px;height:22px;}
.mtab a.active{color:var(--brand-700);font-weight:600;}
.mtab a.active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:22px;height:2px;background:var(--accent-600);border-radius:0 0 2px 2px;}
@media (max-width:767px){body{padding-bottom:76px;}}

/* 导航链接 */
.navlink{position:relative;font-size:15px;color:var(--ink);padding:6px 2px;transition:color .2s ease-out;}
.navlink::after{content:"";position:absolute;left:50%;transform:translateX(-50%) scaleX(0);bottom:-6px;width:16px;height:2px;background:var(--accent-400);border-radius:2px;transition:transform .2s ease-out;}
.navlink:hover{color:var(--brand-700);}
.navlink:hover::after{transform:translateX(-50%) scaleX(1);}
.navlink.active{color:var(--brand-700);font-weight:600;}
.navlink.active::after{transform:translateX(-50%) scaleX(1);background:var(--accent-600);}

/* 页脚 */
.footlink{display:inline-block;font-size:14px;color:var(--cream);transition:color .2s ease-out,transform .2s ease-out;}
.footlink:hover{color:var(--accent-400);transform:translateX(2px);}

/* 表单 */
.field{height:48px;width:100%;padding:0 16px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);font-size:15px;transition:border-color .2s ease-out,box-shadow .2s ease-out;}
.field::placeholder{color:#8A948E;}
.field:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 2px var(--celadon);}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .card-item:hover{transform:none;}
  .card-item:hover .thumb img{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --brand-900:#0F2E28; --brand-700:#17453B; --brand-500:#2C6B57;
  --accent-600:#C2552B; --accent-400:#E08A5B;
  --celadon:#9CC6B4;
  --ink:#17211D; --sub:#5A6660;
  --paper:#FBF7F1; --card:#FFFDFA; --soft:#F3ECE1; --line:#E4DACB;
  --radius-card:18px; --radius-img:14px;
}
*,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

.container{
  width:100%;max-width:1200px !important;
  margin-left:auto;margin-right:auto;
  padding-left:32px;padding-right:32px;
}

/* 九点阵标记 */
.dots-mark{
  width:24px;height:24px;display:inline-block;flex:none;color:var(--brand-900);
  background-image:
    radial-gradient(circle, var(--accent-600) 1.9px, transparent 2.1px),
    radial-gradient(circle, currentColor 1.7px, transparent 1.9px);
  background-size:8px 8px, 8px 8px;
  background-position:16px 0, 0 0;
  background-repeat:no-repeat, repeat;
}
.dots-mark.lg{width:32px;height:32px;background-size:10.6px 10.6px,10.6px 10.6px;background-position:21.3px 0,0 0}

/* 导航 */
.navlink{position:relative;font-size:15px;color:var(--ink);padding:6px 0;transition:color .2s ease-out}
.navlink::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--accent-600);border-radius:2px;transition:width .2s ease-out}
.navlink:hover{color:var(--brand-700)}
.navlink:hover::after{width:16px}
.navlink.active{color:var(--brand-700);font-weight:600}
.navlink.active::after{width:16px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;font-weight:600;font-size:15px;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out}
.btn-primary{background:var(--brand-900);color:#FFFDFA}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,46,40,.16)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(15,46,40,.18)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:var(--soft);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent-600);color:#FFFDFA}
.btn-accent:hover{background:#A94723;transform:translateY(-1px);box-shadow:0 10px 22px rgba(194,85,43,.22)}

:focus-visible{outline:2px solid var(--celadon);outline-offset:2px;border-radius:6px}

/* 页脚链接 */
.footlink{color:#EDE6DA;font-size:14px;display:inline-block;transition:color .2s ease-out,transform .2s ease-out}
.footlink:hover{color:var(--accent-400);transform:translateX(2px)}

/* 编号标签 */
.numtag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent-600);font-variant-numeric:tabular-nums}

/* 正文排版 */
.prose-cn{font-size:16.5px;line-height:1.9;color:var(--ink);overflow-wrap:break-word}
.prose-cn > * + *{margin-top:20px}
.prose-cn h2{font-size:clamp(23px,2.4vw,30px);line-height:1.4;font-weight:700;color:var(--brand-900);margin-top:40px;margin-bottom:14px;padding-left:16px;position:relative}
.prose-cn h2::before{content:"";position:absolute;left:0;top:.42em;width:4px;height:18px;background:var(--accent-600);border-radius:2px}
.prose-cn h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--brand-700);margin-top:28px;margin-bottom:10px}
.prose-cn h4{font-size:17px;font-weight:700;color:var(--brand-700);margin-top:22px;margin-bottom:8px}
.prose-cn ul,.prose-cn ol{padding-left:0}
.prose-cn ul > li{position:relative;padding-left:18px;margin-top:8px}
.prose-cn ul > li::before{content:"";position:absolute;left:2px;top:.8em;width:6px;height:6px;border-radius:50%;background:var(--celadon)}
.prose-cn ol{list-style:decimal;padding-left:22px}
.prose-cn ol > li{margin-top:8px}
.prose-cn blockquote{margin:22px 0;border-left:3px solid var(--accent-600);background:var(--soft);padding:18px 22px;border-radius:0 12px 12px 0;color:var(--brand-700);font-weight:500}
.prose-cn img{width:100%;border-radius:var(--radius-img);border:1px solid var(--line);margin:6px 0 10px}
.prose-cn figure{margin:22px 0}
.prose-cn figcaption{font-size:12px;color:var(--sub);text-align:center}
.prose-cn a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(194,85,43,.5)}
.prose-cn a:hover{color:var(--accent-600)}
.prose-cn table{width:100%;border-collapse:collapse;font-size:15px;margin:20px 0}
.prose-cn th,.prose-cn td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.prose-cn th{background:var(--soft);font-weight:600;color:var(--brand-900)}
.prose-cn tbody tr:nth-child(even){background:var(--paper)}
.prose-cn code{background:var(--soft);padding:1px 6px;border-radius:6px;font-size:14px}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:0 1px 2px rgba(23,33,29,.05);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.card-hover:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(15,46,40,.10);border-color:#D8CAB5}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:1;padding:6px 12px;border-radius:999px;background:#E6F0EA;color:var(--brand-700);font-weight:600}
.arch{border-top-left-radius:999px;border-top-right-radius:999px;overflow:hidden}
.imgwrap{overflow:hidden;border-radius:var(--radius-img);border:1px solid var(--line)}
.imgwrap img{transition:transform .3s ease-out}
.card-hover:hover .imgwrap img{transform:scale(1.03)}

/* 移动端底部 Tab */
#mobileTabs{display:none}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px}
  #mobileTabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;
    background:var(--paper);border-top:1px solid var(--line);
    box-shadow:0 -6px 18px rgba(15,46,40,.06);
    padding-bottom:env(safe-area-inset-bottom);
  }
  body{padding-bottom:76px}
}
.mtab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;flex:1;padding:8px 0 7px;font-size:11px;color:var(--sub);position:relative;transition:color .2s ease-out}
.mtab svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mtab.active{color:var(--brand-700);font-weight:600}
.mtab.active::before{content:"";position:absolute;top:0;width:22px;height:2px;border-radius:2px;background:var(--accent-600)}

@media (max-width:1023px){ .container{padding-left:24px;padding-right:24px} }
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .card-hover:hover{transform:none}
  .card-hover:hover .imgwrap img{transform:none}
}

/* roulang page: category1 */
:root{
  --brand-900:#0F2E28; --brand-700:#17453B; --brand-500:#2C6B57; --brand-300:#5C8F7C; --brand-100:#DDEBE4;
  --accent-600:#C2552B; --accent-400:#E08A5B;
  --celadon:#9CC6B4;
  --paper:#FBF7F1; --surface:#FFFDFA; --surface-2:#F3ECE1; --line:#E4DACB;
  --ink:#17211D; --sub:#5A6660; --cream:#EDE6DA;
  --radius-card:18px; --radius-btn:12px;
  --shadow-card:0 1px 2px rgba(23,33,29,.05);
  --shadow-hover:0 12px 28px rgba(15,46,40,.10);
  --shadow-nav:0 2px 12px rgba(15,46,40,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease-out,transform .2s ease-out}
img{display:block;max-width:100%;height:auto}
button{font:inherit}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px}
body .container{width:100%;max-width:1200px;margin:0 auto;padding-left:18px;padding-right:18px}
@media (min-width:768px){ body .container{padding-left:24px;padding-right:24px} }
@media (min-width:1024px){ body .container{padding-left:32px;padding-right:32px} }

/* 九点阵标记 */
.dots-mark{
  display:inline-block;flex:none;width:24px;height:24px;
  background-image:radial-gradient(currentColor 2px,transparent 2.2px);
  background-size:8px 8px;background-position:4px 4px;
  color:var(--brand-700);
}

/* 编号标签 */
.numtag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--accent-600);font-variant-numeric:tabular-nums;
}
.numtag::before{
  content:"";width:18px;height:18px;
  background-image:radial-gradient(currentColor 2px,transparent 2.2px);
  background-size:6px 6px;background-position:3px 3px;
  color:var(--celadon);
}

/* 导航 */
.navlink{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink);transition:color .2s ease-out}
.navlink::after{
  content:"";position:absolute;left:0;bottom:0;width:16px;height:2px;
  background:var(--accent-400);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.navlink:hover{color:var(--brand-700)}
.navlink:hover::after{transform:scaleX(1)}
.navlink.active{color:var(--brand-700);font-weight:600}
.navlink.active::after{transform:scaleX(1)}

.footlink{display:inline-block;font-size:14px;color:var(--cream);transition:color .2s ease-out,transform .2s ease-out}
.footlink:hover{color:var(--accent-400);transform:translateX(2px)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:var(--brand-900);color:#FFFDFA}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-card)}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700)}
.btn-ghost:hover{background:var(--surface-2);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent-600);color:#FFFDFA}
.btn-accent:hover{background:#A8471F;transform:translateY(-1px);box-shadow:0 10px 24px rgba(194,85,43,.22)}
.btn-accent:active{transform:translateY(0);box-shadow:none}
.btn-outline-cream{background:transparent;border-color:rgba(237,230,218,.42);color:var(--cream)}
.btn-outline-cream:hover{background:rgba(237,230,218,.12);border-color:rgba(237,230,218,.72)}

/* 徽章 */
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:999px;background:rgba(156,198,180,.24);color:#23473C;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}

/* 卡片 */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.card-img{overflow:hidden}
.card-img img{transition:transform .3s ease-out}
.card:hover .card-img img{transform:scale(1.03)}

/* 拱门图 */
.arch{overflow:hidden;border-radius:999px 999px 16px 16px;border:1px solid var(--line)}

/* 步骤时间线 */
.timeline{position:relative}
.timeline li{position:relative;padding-left:64px;padding-bottom:32px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:19px;top:46px;bottom:0;width:2px;
  background:var(--celadon);opacity:.65;
}
.timeline li:last-child::before{display:none}
.step-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:999px;
  display:grid;place-items:center;background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);color:var(--accent-600);font-weight:700;font-size:13px;
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}

/* 注意事项 */
.tip{
  display:flex;gap:12px;padding:18px;border-radius:14px;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.tip:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.tip-mark{
  flex:none;width:26px;height:26px;border-radius:999px;display:grid;place-items:center;
  background:rgba(156,198,180,.28);color:var(--brand-700);font-size:12px;font-weight:700;
  font-variant-numeric:tabular-nums;
}

/* 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:16px;
  padding:18px 14px;background:transparent;border:0;border-radius:10px;
  text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:background-color .2s ease-out,color .2s ease-out;
}
.faq-q:hover{background:var(--surface-2)}
.faq-item.open .faq-q{color:var(--brand-700)}
.faq-icon{flex:none;width:20px;height:20px;position:relative;transition:transform .2s ease-out}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent-600);border-radius:2px;
}
.faq-icon::before{left:2px;top:9px;width:16px;height:2px}
.faq-icon::after{left:9px;top:2px;width:2px;height:16px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
.faq-a-inner{padding:0 14px 20px;font-size:15px;line-height:1.9;color:var(--sub)}

/* 底部 Tab */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--paper);border-top:1px solid var(--line);
  box-shadow:0 -6px 18px rgba(15,46,40,.07);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:11px;color:var(--sub);transition:color .2s ease-out;
}
.tabbar a svg{width:21px;height:21px}
.tabbar a::before{
  content:"";position:absolute;top:0;left:50%;width:22px;height:2px;background:var(--accent-400);
  transform:translateX(-50%) scaleX(0);transition:transform .2s ease-out;
}
.tabbar a.active{color:var(--brand-700);font-weight:600}
.tabbar a.active::before{transform:translateX(-50%) scaleX(1)}

@media (max-width:767px){
  body{padding-bottom:76px}
  .timeline li{padding-left:56px}
  .timeline li::before{left:17px}
  .step-num{width:36px;height:36px;font-size:12px}
}
@media (min-width:768px){ .tabbar{display:none} }

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
  .card:hover,.tip:hover,.btn:hover{transform:none}
  .card:hover .card-img img{transform:none}
}

/* roulang page: category2 */
:root{
    --brand-900:#0F2E28; --brand-700:#17453B; --brand-500:#2C6B57; --celadon:#9CC6B4;
    --accent-600:#C2552B; --accent-400:#E08A5B;
    --ink:#17211D; --sub:#5A6660; --paper:#FBF7F1; --surface:#FFFDFA; --layer:#F3ECE1;
    --line:#E4DACB; --cream:#EDE6DA;
    --r-card:18px; --r-img:14px; --r-btn:12px;
    --shadow-card:0 1px 2px rgba(23,33,29,.05);
    --shadow-hover:0 12px 28px rgba(15,46,40,.10);
    --shadow-nav:0 2px 12px rgba(15,46,40,.06);
    --t:200ms ease-out;
  }
  *,*::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:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:16px; line-height:1.9; letter-spacing:.01em;
  }
  img{display:block; max-width:100%}
  a{color:inherit; text-decoration:none}
  button{font:inherit; background:none; border:0}
  h1,h2,h3,p,ul,ol{margin:0}
  ul,ol{padding:0; list-style:none}
  body .container{
    width:100%; max-width:1200px; margin:0 auto;
    padding-left:18px; padding-right:18px;
  }
  @media (min-width:768px){ body .container{padding-left:24px; padding-right:24px} }
  @media (min-width:1024px){ body .container{padding-left:32px; padding-right:32px} }

  .dots-mark{
    display:inline-block; width:24px; height:24px; flex:none;
    color:var(--brand-700);
    background-image:radial-gradient(circle, currentColor 2px, transparent 2.3px);
    background-size:8px 8px; background-repeat:repeat;
    background-position:0 0;
  }
  .eyebrow{
    display:inline-flex; align-items:center; gap:10px;
    font-size:13px; font-weight:700; letter-spacing:.08em;
    color:var(--accent-600); font-variant-numeric:tabular-nums;
  }
  .eyebrow::before{
    content:""; width:22px; height:22px; flex:none;
    background-image:radial-gradient(circle, currentColor 2px, transparent 2.3px);
    background-size:7px 7px; opacity:.55;
  }
  .navlink{position:relative; display:inline-block; font-size:15px; color:var(--ink); padding:6px 0; transition:color var(--t)}
  .navlink::after{
    content:""; position:absolute; left:0; bottom:0; width:16px; height:2px;
    background:var(--accent-400); transform:scaleX(0); transform-origin:left;
    transition:transform var(--t); border-radius:2px;
  }
  .navlink:hover{color:var(--brand-700)}
  .navlink:hover::after,.navlink.active::after{transform:scaleX(1)}
  .navlink.active{color:var(--brand-700); font-weight:600}

  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    border-radius:var(--r-btn); border:1px solid transparent;
    font-weight:600; line-height:1; cursor:pointer;
    transition:transform var(--t), background-color var(--t), color var(--t), box-shadow var(--t), border-color var(--t);
  }
  .btn-primary{background:var(--brand-900); color:#FFFDFA}
  .btn-primary:hover{background:#0a211c; transform:translateY(-1px); box-shadow:var(--shadow-hover)}
  .btn-ghost{background:transparent; border-color:var(--brand-700); color:var(--brand-700)}
  .btn-ghost:hover{background:var(--layer); transform:translateY(-1px)}
  .btn-accent{background:var(--accent-600); color:#FFFDFA}
  .btn-accent:hover{background:#a8451f; transform:translateY(-1px); box-shadow:var(--shadow-hover)}
  .btn:active{transform:translateY(0); box-shadow:none}
  .btn:focus-visible, .navlink:focus-visible, a:focus-visible, button:focus-visible{
    outline:2px solid var(--celadon); outline-offset:2px;
  }

  .card{
    background:var(--surface); border:1px solid var(--line);
    border-radius:var(--r-card); box-shadow:var(--shadow-card);
    transition:transform var(--t), box-shadow var(--t), border-color var(--t);
  }
  .card:hover{transform:translateY(-3px); box-shadow:var(--shadow-hover); border-color:#d9cbb6}

  .badge{
    display:inline-flex; align-items:center; gap:6px;
    padding:4px 12px; border-radius:999px;
    background:rgba(156,198,180,.30); color:var(--brand-900);
    font-size:13px; font-weight:600; line-height:1.7;
  }
  .hot-tag{
    display:inline-flex; align-items:center; gap:6px;
    padding:3px 10px; border-radius:999px;
    background:rgba(194,85,43,.10); color:var(--accent-600);
    font-size:12px; font-weight:700; letter-spacing:.04em;
  }
  .arch{
    border-radius:999px 999px var(--r-img) var(--r-img);
    overflow:hidden; border:1px solid var(--line); background:var(--layer);
  }
  .arch img{width:100%; height:100%; object-fit:cover}

  .hero-field{
    background-image:radial-gradient(circle, rgba(23,69,59,.05) 1px, transparent 1.2px);
    background-size:18px 18px;
  }
  .link-text{
    color:var(--brand-700); font-weight:600;
    text-decoration:underline; text-underline-offset:3px;
    text-decoration-color:rgba(194,85,43,.5);
    transition:color var(--t), text-decoration-color var(--t);
  }
  .link-text:hover{color:var(--accent-600); text-decoration-color:var(--accent-600)}

  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    display:flex; align-items:flex-start; justify-content:space-between; gap:16px;
    width:100%; text-align:left; padding:18px 12px;
    border-radius:10px; cursor:pointer;
    transition:background-color var(--t), color var(--t);
  }
  .faq-q:hover{background:var(--layer)}
  .faq-q span:first-child{font-size:16px; font-weight:600; line-height:1.7; transition:color var(--t)}
  .faq-q[aria-expanded="true"] span:first-child{color:var(--brand-700)}
  .faq-icon{
    position:relative; width:20px; height:20px; flex:none; margin-top:4px;
    transition:transform var(--t);
  }
  .faq-icon::before,.faq-icon::after{
    content:""; position:absolute; left:50%; top:50%; border-radius:2px;
    background:var(--brand-700); transition:background-color var(--t);
  }
  .faq-icon::before{width:14px; height:2px; transform:translate(-50%,-50%)}
  .faq-icon::after{width:2px; height:14px; transform:translate(-50%,-50%)}
  .faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg)}
  .faq-panel{
    max-height:0; overflow:hidden;
    transition:max-height 260ms ease-out;
  }
  .faq-panel p{padding:0 12px 20px; font-size:15px; line-height:1.9; color:var(--sub)}

  .footlink{
    display:inline-block; font-size:14px; color:var(--cream);
    transition:color var(--t), transform var(--t);
  }
  .footlink:hover{color:var(--accent-400); transform:translateX(-2px)}

  .tabbar{
    position:fixed; left:0; right:0; bottom:0; z-index:60;
    display:flex; background:rgba(251,247,241,.98);
    border-top:1px solid var(--line);
    box-shadow:0 -2px 12px rgba(15,46,40,.06);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tabbar a{
    flex:1; position:relative; height:60px;
    display:flex; flex-direction:column; align-items:center; justify-content:center; gap:3px;
    font-size:11px; color:var(--sub); transition:color var(--t);
  }
  .tabbar a.active{color:var(--brand-700); font-weight:600}
  .tabbar a.active::before{
    content:""; position:absolute; top:0; left:50%; transform:translateX(-50%);
    width:22px; height:2px; background:var(--accent-400); border-radius:0 0 2px 2px;
  }
  @media (min-width:768px){ .tabbar{display:none} }
  @media (max-width:767px){ body{padding-bottom:76px} }

  .step-rail{position:relative}
  .step-rail::before{
    content:""; position:absolute; left:11px; top:8px; bottom:8px; width:2px;
    background:linear-gradient(180deg, rgba(156,198,180,.9), rgba(156,198,180,.25));
    border-radius:2px;
  }

  @media (prefers-reduced-motion: reduce){
    *{transition:none !important; animation:none !important}
    html{scroll-behavior:auto}
    .card:hover, .btn:hover{transform:none}
  }

/* roulang page: category3 */
:root{
  --brand-900:#0F2E28; --brand-700:#17453B; --brand-500:#2C6B57;
  --accent-600:#C2552B; --accent-400:#E08A5B; --celadon:#9CC6B4;
  --ink:#17211D; --sub:#5A6660; --paper:#FBF7F1; --card:#FFFDFA;
  --layer:#F3ECE1; --line:#E4DACB; --cream:#EDE6DA;
  --radius-card:18px; --radius-img:14px;
  --shadow-card:0 1px 2px rgba(23,33,29,.05);
  --shadow-hover:0 12px 28px rgba(15,46,40,.10);
  --shadow-nav:0 2px 12px rgba(15,46,40,.06);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
}
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--font-sans); font-size:16px; line-height:1.9; letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; transition:color .2s ease-out, background-color .2s ease-out, transform .2s ease-out; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
input{ font:inherit; }
:focus-visible{ outline:2px solid var(--celadon); outline-offset:2px; border-radius:6px; }
.container{ width:100%; max-width:1200px; margin:0 auto; padding-left:18px; padding-right:18px; }
@media (min-width:768px){ .container{ padding-left:24px; padding-right:24px; } }
@media (min-width:1024px){ .container{ padding-left:32px; padding-right:32px; } }

/* 九点阵标识 */
.dots-mark{
  display:inline-block; width:24px; height:24px; flex:none; color:var(--brand-900);
  background-image:radial-gradient(circle, currentColor 2px, transparent 2.5px);
  background-size:8px 8px; background-position:1px 1px;
}

/* 导航 */
.navlink{ position:relative; display:inline-block; font-size:15px; color:var(--ink); padding:6px 0; }
.navlink::after{
  content:""; position:absolute; left:50%; bottom:-1px; width:16px; height:2px;
  background:var(--accent-600); border-radius:2px;
  transform:translateX(-50%) scaleX(0); transform-origin:center; transition:transform .2s ease-out;
}
.navlink:hover{ color:var(--brand-700); }
.navlink:hover::after,.navlink.active::after{ transform:translateX(-50%) scaleX(1); }
.navlink.active{ color:var(--brand-700); }
#siteHeader.is-scrolled{ box-shadow:var(--shadow-nav); }

/* 按钮 */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 24px; border-radius:12px;
  font-size:15px; font-weight:600; line-height:1; white-space:nowrap;
  transition:background-color .2s ease-out, color .2s ease-out, box-shadow .2s ease-out, transform .2s ease-out, border-color .2s ease-out;
}
.btn-primary{ background:var(--brand-900); color:#FFFDFA; }
.btn-primary:hover{ background:var(--brand-700); transform:translateY(-1px); box-shadow:var(--shadow-hover); }
.btn-primary:active{ transform:translateY(0); box-shadow:var(--shadow-card); }
.btn-accent{ background:var(--accent-600); color:#FFFDFA; }
.btn-accent:hover{ background:#A9471F; transform:translateY(-1px); box-shadow:var(--shadow-hover); }
.btn-accent:active{ transform:translateY(0); box-shadow:var(--shadow-card); }
.btn-ghost{ border:1px solid var(--brand-700); color:var(--brand-700); background:transparent; }
.btn-ghost:hover{ background:var(--layer); transform:translateY(-1px); }
.btn-ghost:active{ transform:translateY(0); box-shadow:none; }
.textlink{
  color:var(--brand-700); text-decoration:underline; text-underline-offset:3px;
  text-decoration-color:rgba(194,85,43,.5); text-decoration-thickness:1px;
}
.textlink:hover{ color:var(--accent-600); text-decoration-color:var(--accent-600); }

/* 编号轴 */
.section-label{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:700; letter-spacing:.08em; color:var(--accent-600);
  font-variant-numeric:tabular-nums;
}

/* 入口拱门 */
.arch{ border-radius:999px 999px var(--radius-img) var(--radius-img); overflow:hidden; border:1px solid var(--line); }
.arch img{ width:100%; height:100%; object-fit:cover; }

/* 面包屑 */
.breadcrumb{ font-size:13px; color:var(--sub); display:flex; flex-wrap:wrap; align-items:center; gap:7px; }
.breadcrumb a{ color:var(--sub); }
.breadcrumb a:hover{ color:var(--brand-700); }
.breadcrumb .sep{ color:var(--line); }
.breadcrumb .current{ color:var(--sub); }

/* 搜索框外观 */
.searchbar{
  display:flex; align-items:center; gap:10px; max-width:460px;
  background:var(--card); border:1px solid var(--line); border-radius:999px;
  padding:6px 8px 6px 18px; transition:border-color .2s ease-out, box-shadow .2s ease-out;
}
.searchbar:focus-within{ border-color:var(--brand-700); box-shadow:0 0 0 3px rgba(156,198,180,.45); }
.searchbar input{ flex:1; min-width:0; height:38px; border:0; background:transparent; font-size:15px; color:var(--ink); outline:none; }
.searchbar input::placeholder{ color:#8A948E; }

/* 锚点条与胶囊 */
.anchor-bar{ position:sticky; top:64px; z-index:40; background:var(--paper); border-bottom:1px solid var(--line); }
@media (min-width:768px){ .anchor-bar{ top:72px; } }
.no-scrollbar{ -ms-overflow-style:none; scrollbar-width:none; }
.no-scrollbar::-webkit-scrollbar{ display:none; }
.pill{
  display:inline-flex; align-items:center; height:38px; padding:0 18px; border-radius:999px;
  border:1px solid var(--line); background:var(--card); font-size:14px; color:var(--ink);
  white-space:nowrap; transition:background-color .2s ease-out, color .2s ease-out, border-color .2s ease-out, transform .2s ease-out;
}
.pill:hover{ border-color:var(--brand-500); color:var(--brand-700); transform:translateY(-1px); }
.pill.active{ background:var(--brand-900); border-color:var(--brand-900); color:#FFFDFA; }

/* FAQ 手风琴 */
.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:16px;
  padding:18px 12px; text-align:left; border-radius:10px;
  font-size:17px; font-weight:600; line-height:1.6; color:var(--ink);
  transition:background-color .2s ease-out, color .2s ease-out;
}
.faq-q:hover{ background:var(--layer); }
.faq-item.open .faq-q{ color:var(--brand-700); }
.faq-icon{
  flex:none; width:22px; height:22px; display:inline-flex; align-items:center; justify-content:center;
  font-size:20px; font-weight:400; line-height:1; color:var(--accent-600);
  transition:transform .2s ease-out;
}
.faq-item.open .faq-icon{ transform:rotate(45deg); }
.faq-a{ display:grid; grid-template-rows:0fr; transition:grid-template-rows .25s ease-out; }
.faq-item.open .faq-a{ grid-template-rows:1fr; }
.faq-a-inner{ overflow:hidden; }
.faq-a-inner p{ margin:0; padding:0 12px 20px; font-size:15px; line-height:1.9; color:var(--sub); }

/* 卡片 */
.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease-out, transform .2s ease-out, border-color .2s ease-out;
}
.card-link:hover{ transform:translateY(-3px); box-shadow:var(--shadow-hover); border-color:#D9CDBA; }
.card-link:hover .card-title{ color:var(--brand-700); }
.card-link:hover .arrow-move{ transform:translateX(4px); }
.arrow-move{ transition:transform .2s ease-out; }
.card-title{ transition:color .2s ease-out; }

/* 页脚链接 */
.footlink{ display:inline-block; font-size:14px; color:var(--cream); transition:color .2s ease-out, transform .2s ease-out; }
.footlink:hover{ color:var(--accent-400); transform:translateX(2px); }

/* 移动端底部 Tab */
.mobile-bar{
  position:fixed; left:0; right:0; bottom:0; z-index:60;
  background:var(--card); border-top:1px solid var(--line);
  box-shadow:0 -2px 12px rgba(15,46,40,.06);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab{
  flex:1; position:relative; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:3px; padding:8px 0 9px; font-size:11px; color:var(--sub);
  transition:color .2s ease-out;
}
.tab.active{ color:var(--brand-700); }
.tab.active::before{
  content:""; position:absolute; top:0; left:50%; transform:translateX(-50%);
  width:24px; height:2px; border-radius:2px; background:var(--accent-600);
}
@media (max-width:767px){ body{ padding-bottom:76px; } }

/* 锚点滚动留白 */
.anchor-target{ scroll-margin-top:126px; }
@media (min-width:768px){ .anchor-target{ scroll-margin-top:136px; } }

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ transition-duration:.01ms !important; animation-duration:.01ms !important; }
  .card-link:hover{ transform:none; }
  .btn:hover{ transform:none; }
}