/* roulang page: index */
:root{
    --brand-ink:#241F3C;
    --brand-ink-2:#3A3260;
    --brand-ember:#FF6A3D;
    --brand-ember-2:#E4552A;
    --brand-nebula:#2CBF9E;
    --bg-page:#F7F6FB;
    --bg-elev:#FFFFFF;
    --bg-soft:#EFEDF8;
    --line:#E5E3F0;
    --text-1:#1B1830;
    --text-2:#565272;
    --text-3:#8B87A3;
    --radius-card:14px;
    --radius-btn:10px;
    --shadow-s:0 1px 2px rgba(36,31,60,.06), 0 2px 8px rgba(36,31,60,.05);
    --shadow-m:0 4px 16px rgba(36,31,60,.08);
    --shadow-l:0 12px 32px rgba(36,31,60,.14);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,sans-serif;
    background:var(--bg-page);
    color:var(--text-1);
    font-size:16px;
    line-height:1.9;
    letter-spacing:0;
    overflow-x:hidden;
  }
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.35;word-break:normal;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  a{color:inherit;text-decoration:none;transition:color .2s ease-out;}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  input{font-family:inherit;}

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

  ::selection{background:rgba(255,106,61,.24);}

  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:var(--bg-soft);}
  ::-webkit-scrollbar-thumb{background:#C9C5DC;border-radius:6px;border:2px solid var(--bg-soft);}
  ::-webkit-scrollbar-thumb:hover{background:#ADA8C4;}

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

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:#FFFFFF;
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-s);
  }
  .header-inner{height:60px;display:flex;align-items:center;gap:20px;}
  @media(min-width:1024px){.header-inner{height:72px;gap:28px;}}

  .logo{display:inline-flex;align-items:center;gap:10px;min-height:36px;flex:none;}
  .logo-text{font-size:17px;font-weight:700;color:var(--brand-ink);letter-spacing:-.01em;white-space:nowrap;}

  .nav-list{display:flex;align-items:center;gap:4px;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    padding:9px 16px;font-size:15px;color:var(--text-2);
    border-radius:8px;transition:color .2s ease-out,background .2s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:16px;right:16px;bottom:3px;height:2px;
    background:var(--brand-ember);transform:scaleX(0);transform-origin:left;
    transition:transform .25s ease-out;border-radius:2px;
  }
  .nav-link:hover{color:var(--text-1);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--brand-ink-2);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}
  .nav-link.active::before{
    content:"";position:absolute;left:4px;top:50%;width:4px;height:4px;
    border-radius:50%;background:var(--brand-ember);transform:translateY(-50%);
  }

  .search-box{
    display:flex;align-items:center;gap:8px;
    background:#F3F2F8;border:1px solid transparent;
    border-radius:999px;padding:0 14px;height:40px;width:200px;
    transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .search-box:focus-within{background:#FFFFFF;border-color:var(--brand-nebula);box-shadow:0 0 0 3px rgba(44,191,158,.15);}
  .search-box input{
    border:none;background:transparent;outline:none;font-size:14px;
    color:var(--text-1);width:100%;
  }
  .search-box input::placeholder{color:var(--text-3);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-btn);padding:12px 24px;
    font-size:15px;font-weight:600;line-height:1;white-space:nowrap;cursor:pointer;
    border:1px solid transparent;
    transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .btn-primary{background:var(--brand-ember);color:var(--brand-ink);}
  .btn-primary:hover{background:#FF8059;transform:translateY(-2px);box-shadow:var(--shadow-m);}
  .btn-primary:active{background:var(--brand-ember-2);transform:translateY(0);}
  .btn-secondary{background:#FFFFFF;color:var(--brand-ink);border-color:var(--line);}
  .btn-secondary:hover{border-color:var(--brand-ink);background:var(--bg-page);transform:translateY(-2px);}
  .btn-secondary:active{transform:translateY(0);}
  .btn-dark{background:var(--brand-ink);color:#FFFFFF;border-color:var(--brand-ink);}
  .btn-dark:hover{background:var(--brand-ink-2);transform:translateY(-2px);box-shadow:var(--shadow-m);}
  .btn-sm{padding:10px 18px;font-size:14px;min-height:40px;}
  .btn-lg{padding:14px 30px;font-size:16px;min-height:48px;}
  .btn-block{width:100%;}

  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand-ink-2);font-size:15px;font-weight:600;
    text-decoration:underline;text-decoration-color:transparent;
    text-underline-offset:4px;transition:color .2s ease-out,text-decoration-color .2s ease-out;
  }
  .text-link:hover{color:var(--brand-nebula);text-decoration-color:var(--brand-nebula);}

  .hamburger{
    display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
    width:44px;height:44px;padding:0 10px;background:#FFFFFF;
    border:1px solid var(--line);border-radius:10px;cursor:pointer;
  }
  .hamburger span{display:block;height:2px;background:var(--brand-ink);border-radius:2px;transition:transform .2s ease-out;}
  @media(min-width:1024px){.hamburger{display:none;}}

  .drawer-mask{
    position:fixed;inset:0;background:rgba(27,24,48,.42);z-index:60;
    opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:61;
    background:#FFFFFF;box-shadow:var(--shadow-l);
    transform:translateX(100%);transition:transform .28s ease-out;
    display:flex;flex-direction:column;padding:20px;overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 4px;font-size:16px;color:var(--text-1);
    border-bottom:1px dashed var(--line);min-height:44px;
  }
  .drawer-link.active{color:var(--brand-ink-2);font-weight:600;}

  /* ---------- 通用排版 ---------- */
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.08em;
    color:var(--brand-nebula);text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:18px;height:2px;background:var(--brand-ember);border-radius:2px;}

  .section{padding:56px 0;}
  @media(min-width:768px){.section{padding:72px 0;}}
  @media(min-width:1024px){.section{padding:96px 0;}}

  .section-soft{background:var(--bg-soft);}
  .section-white{background:#FFFFFF;}

  .h1{
    font-size:28px;line-height:1.25;font-weight:700;letter-spacing:-.02em;color:var(--brand-ink);
  }
  @media(min-width:768px){.h1{font-size:32px;}}
  @media(min-width:1024px){.h1{font-size:40px;}}

  .h2{font-size:22px;line-height:1.35;font-weight:700;color:var(--brand-ink);}
  @media(min-width:1024px){.h2{font-size:28px;}}

  .h3{font-size:18px;line-height:1.4;font-weight:600;color:var(--brand-ink);}
  @media(min-width:1024px){.h3{font-size:19px;}}

  .lead{font-size:16px;line-height:1.9;color:var(--text-2);}
  .muted{color:var(--text-2);font-size:15px;line-height:1.9;}
  .meta{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}

  .metric{font-size:30px;font-weight:700;color:var(--brand-ember);font-variant-numeric:tabular-nums;line-height:1;}
  @media(min-width:1024px){.metric{font-size:34px;}}
  .metric-label{font-size:13px;color:var(--text-2);}

  /* ---------- 卡片 ---------- */
  .card{
    background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-s);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:rgba(255,106,61,.3);}
  .card-pad{padding:20px;}
  @media(min-width:768px){.card-pad{padding:24px;}}

  .card-accent{position:relative;overflow:hidden;}
  .card-accent::before{
    content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
    background:var(--brand-ember);border-radius:0 3px 3px 0;
  }

  .media{position:relative;overflow:hidden;border-radius:12px;background:var(--bg-soft);}
  .media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
  .card:hover .media img{transform:scale(1.03);}
  .ratio-16-9{aspect-ratio:16/9;}
  .ratio-4-3{aspect-ratio:4/3;}

  .media-fallback{
    display:flex;align-items:center;justify-content:center;
    background:var(--bg-soft);border:1px dashed var(--line);border-radius:12px;color:var(--text-3);
  }

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    border-radius:999px;font-size:12px;font-weight:600;line-height:1;
    padding:6px 12px;white-space:nowrap;
  }
  .badge-nebula{background:rgba(44,191,158,.12);color:var(--brand-nebula);}
  .badge-soft{background:var(--bg-soft);color:var(--text-2);}
  .badge-ember{background:var(--brand-ember);color:var(--brand-ink);}

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

  /* ---------- Hero ---------- */
  .hero{padding:40px 0 56px;background:#FFFFFF;}
  @media(min-width:768px){.hero{padding:56px 0 72px;}}
  @media(min-width:1024px){.hero{padding:72px 0 96px;}}

  .dot-soft{
    background-image:radial-gradient(rgba(36,31,60,.10) 1px, transparent 1px);
    background-size:22px 22px;
  }

  /* ---------- 要点编号列表 ---------- */
  .num{
    flex:none;font-size:14px;font-weight:700;color:var(--brand-ember);
    font-variant-numeric:tabular-nums;letter-spacing:.04em;padding-top:3px;
  }

  /* ---------- Pill 切换条 ---------- */
  .pill-bar{display:flex;flex-wrap:wrap;gap:10px;}
  .pill{
    display:inline-flex;align-items:center;
    padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
    background:#FFFFFF;border:1px solid var(--line);color:var(--text-2);
    transition:all .2s ease-out;min-height:40px;
  }
  .pill:hover{border-color:var(--brand-ink);color:var(--brand-ink);}
  .pill.is-current{background:var(--brand-ember);border-color:var(--brand-ember);color:var(--brand-ink);}

  .anchor-target{scroll-margin-top:96px;}

  /* ---------- 深色带 ---------- */
  .dark-band{
    background:var(--brand-ink);color:#FFFFFF;position:relative;overflow:hidden;
  }
  .dark-band .dot-grid{
    position:absolute;inset:0;pointer-events:none;opacity:.32;
    background-image:radial-gradient(rgba(255,255,255,.35) 1px, transparent 1px);
    background-size:22px 22px;
  }

  /* ---------- FAQ ---------- */
  .faq{
    background:#FFFFFF;border:1px solid var(--line);border-radius:12px;
    padding:18px 20px;transition:border-color .2s ease-out;
  }
  .faq + .faq{margin-top:12px;}
  .faq:hover{border-color:rgba(255,106,61,.35);}
  .faq summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    cursor:pointer;list-style:none;font-size:16px;font-weight:600;color:var(--text-1);
    min-height:28px;
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq .plus{flex:none;transition:transform .25s ease-out;color:var(--brand-ember);}
  .faq[open] .plus{transform:rotate(45deg);}
  .faq[open] summary{color:var(--brand-ink);}
  .faq .answer{
    margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);
    font-size:15px;line-height:1.9;color:var(--text-2);
  }

  /* ---------- 表单 ---------- */
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:6px;}
  .field input,.field textarea{
    width:100%;background:#FFFFFF;border:1px solid var(--line);
    border-radius:10px;padding:12px 16px;font-size:15px;color:var(--text-1);
    outline:none;transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
  .field input:focus,.field textarea:focus{
    border-color:var(--brand-nebula);box-shadow:0 0 0 3px rgba(44,191,158,.15);
  }
  .field textarea{resize:vertical;min-height:96px;line-height:1.8;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-ink);color:#B9B4D0;position:relative;overflow:hidden;}
  .site-footer .dot-grid{
    position:absolute;inset:0;pointer-events:none;opacity:.18;
    background-image:radial-gradient(rgba(255,255,255,.5) 1px, transparent 1px);
    background-size:22px 22px;
  }
  .footer-title{font-size:14px;font-weight:600;color:#FFFFFF;margin-bottom:14px;}
  .footer-link{display:inline-flex;align-items:center;min-height:32px;font-size:14px;color:#B9B4D0;transition:color .2s ease-out;}
  .footer-link:hover{color:var(--brand-ember);}

  /* ---------- 空态 ---------- */
  .empty-state{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
    min-height:200px;background:var(--bg-page);border:1px dashed var(--line);
    border-radius:var(--radius-card);text-align:center;padding:28px;
  }

  /* ---------- 表格 ---------- */
  .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius-card);background:#FFFFFF;}
  .data-table{width:100%;min-width:640px;border-collapse:collapse;font-size:14px;}
  .data-table th,.data-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);}
  .data-table thead th{background:var(--bg-soft);color:var(--brand-ink);font-weight:600;font-size:13px;}
  .data-table tbody tr:nth-child(even){background:#FCFBFE;}
  .data-table tbody tr:last-child td{border-bottom:none;}

  .divider-fade{height:1px;background:linear-gradient(90deg,rgba(229,227,240,0),#E5E3F0 20%,#E5E3F0 80%,rgba(229,227,240,0));}

/* roulang page: article */
:root{
  --brand-ink:#241F3C;
  --brand-ink-2:#3A3260;
  --brand-ember:#FF6A3D;
  --brand-ember-2:#E4552A;
  --brand-nebula:#2CBF9E;
  --bg-page:#F7F6FB;
  --bg-elev:#FFFFFF;
  --bg-soft:#EFEDF8;
  --line:#E5E3F0;
  --text-1:#1B1830;
  --text-2:#565272;
  --text-3:#8B87A3;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-s:0 1px 2px rgba(36,31,60,.06),0 2px 8px rgba(36,31,60,.05);
  --shadow-m:0 4px 16px rgba(36,31,60,.08);
  --shadow-l:0 10px 30px rgba(36,31,60,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--text-1);
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;letter-spacing:-.02em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-ember);outline-offset:2px;border-radius:6px;}
.container-x{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;width:100%;}
.relative{position:relative;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-s);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;min-height:36px;flex:0 0 auto;}
.logo-text{font-size:18px;font-weight:700;color:var(--brand-ink);letter-spacing:-.02em;white-space:nowrap;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:8px;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-link::after{
  content:'';position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand-ember);border-radius:2px;transform:scaleX(0);
  transform-origin:left center;transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text-1);background:#F8F7FC;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-ink-2);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-link.active::before{
  content:'';position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--brand-ember);
}
.header-right{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:#F3F2F8;border:1px solid transparent;border-radius:999px;
  padding:8px 14px;width:200px;transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.search-box:focus-within{background:#FFFFFF;border-color:var(--brand-nebula);box-shadow:0 0 0 3px rgba(44,191,158,.15);}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--text-1);
}
.search-box input::placeholder{color:var(--text-3);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand-ember);color:var(--brand-ink);font-weight:700;
  border:1px solid var(--brand-ember);border-radius:var(--radius-btn);
  padding:12px 24px;font-size:15px;white-space:nowrap;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.btn-primary:hover{background:#FF7C55;transform:translateY(-2px);box-shadow:var(--shadow-m);}
.btn-primary:active{background:var(--brand-ember-2);transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#FFFFFF;color:var(--brand-ink);font-weight:600;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:12px 24px;font-size:15px;white-space:nowrap;
  transition:border-color .2s ease-out,background .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{border-color:var(--brand-ink);background:#F8F7FC;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-full{width:100%;}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#FFFFFF;
}
.menu-toggle:hover{border-color:var(--brand-ink);}
.overlay{
  position:fixed;inset:0;background:rgba(36,31,60,.45);opacity:0;pointer-events:none;
  transition:opacity .25s ease-out;z-index:60;
}
.overlay.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:340px;background:#FFFFFF;
  transform:translateX(102%);transition:transform .28s ease-out;z-index:70;
  padding:24px 20px;overflow-y:auto;box-shadow:var(--shadow-l);
}
.drawer.open{transform:translateX(0);}
.drawer .nav-link{display:block;padding:14px 12px;font-size:16px;border-radius:10px;}
.drawer .nav-link::after,.drawer .nav-link.active::before{display:none;}
.drawer .nav-link.active{background:var(--bg-soft);}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#FFFFFF;border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:14px 0;overflow-x:auto;white-space:nowrap;}
.breadcrumb a:hover{color:var(--brand-nebula);}
.breadcrumb .sep{color:#CFCBDE;}
.breadcrumb .current{color:var(--text-1);}

/* ---------- 文章布局 ---------- */
.article-wrap{padding:48px 0 88px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 304px;gap:48px;align-items:start;}
.article-main{max-width:760px;width:100%;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(44,191,158,.12);color:#1E8C73;
  border-radius:999px;padding:5px 12px;font-size:12px;font-weight:600;white-space:nowrap;
}
.tag-soft{
  display:inline-flex;align-items:center;
  background:var(--bg-soft);color:var(--text-2);
  border-radius:999px;padding:5px 12px;font-size:12px;white-space:nowrap;
}
.article-title{font-size:34px;line-height:1.32;margin:16px 0 0;letter-spacing:-.02em;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:18px;font-size:13px;color:var(--text-3);}
.meta-row .num{font-variant-numeric:tabular-nums;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#D6D3E4;}
.rule{height:1px;background:var(--line);margin:26px 0 4px;border:0;}
.cover-figure{margin:26px 0 0;}
.cover-figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:12px;}

/* ---------- 中文正文 ---------- */
.prose-cn{padding-top:26px;}
.prose-cn p{font-size:16px;line-height:1.9;color:var(--text-2);margin-bottom:1.2em;}
.prose-cn p strong,.prose-cn p b{color:var(--text-1);}
.prose-cn h2{
  position:relative;font-size:24px;line-height:1.4;color:var(--text-1);
  margin:36px 0 16px;padding-left:14px;
}
.prose-cn h2::before{
  content:'';position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--brand-ember);border-radius:2px;
}
.prose-cn h3{font-size:19px;line-height:1.45;color:var(--text-1);margin:26px 0 12px;font-weight:600;}
.prose-cn ul,.prose-cn ol{padding-left:1.4em;margin:0 0 1.2em;}
.prose-cn ul li{list-style:disc;line-height:1.9;color:var(--text-2);margin-bottom:8px;}
.prose-cn ol li{list-style:decimal;line-height:1.9;color:var(--text-2);margin-bottom:8px;}
.prose-cn blockquote{
  margin:20px 0;padding:18px 20px;background:var(--bg-page);
  border-left:4px solid var(--brand-nebula);border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--text-2);
}
.prose-cn img{margin:20px 0 8px;border-radius:var(--radius-img);}
.prose-cn a{color:var(--brand-ink-2);border-bottom:1px solid rgba(255,106,61,.5);}
.prose-cn a:hover{color:var(--brand-nebula);border-bottom-color:var(--brand-nebula);}
.prose-cn table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;}
.prose-cn th,.prose-cn td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.prose-cn th{background:var(--bg-soft);color:var(--text-1);font-weight:600;}
.prose-cn td{color:var(--text-2);}
.prose-cn code{background:var(--bg-soft);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-ink-2);}
.prose-cn hr{border:0;height:1px;background:var(--line);margin:32px 0;}

/* ---------- 空态 ---------- */
.empty-state{
  margin-top:26px;min-height:200px;background:var(--bg-page);
  border:1px dashed #D6D3E4;border-radius:var(--radius-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:36px 24px;
}
.empty-state p{font-size:15px;color:var(--text-2);}

/* ---------- 通用卡片 ---------- */
.card{
  background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-s);padding:24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:rgba(255,106,61,.32);}
.card-accent{border-left:3px solid var(--brand-ember);}
.img-frame{overflow:hidden;border-radius:var(--radius-img);background:var(--bg-soft);}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.img-frame:hover img{transform:scale(1.03);}
.ratio-16x9{aspect-ratio:16/9;}

/* ---------- 文末区块 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.section-title{font-size:28px;line-height:1.35;}
.link-arrow{font-size:14px;color:var(--brand-ink-2);border-bottom:1px solid transparent;transition:color .2s ease-out,border-color .2s ease-out;}
.link-arrow:hover{color:var(--brand-nebula);border-bottom-color:var(--brand-nebula);}
.rec-card{display:block;}
.rec-card h3{font-size:17px;line-height:1.45;margin:14px 0 8px;font-weight:600;}
.rec-card p{font-size:14px;line-height:1.8;color:var(--text-2);}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px;}
.post-nav a{
  display:block;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.post-nav a:hover{transform:translateX(2px);border-color:var(--brand-ember);box-shadow:var(--shadow-s);}
.post-nav .label{font-size:12px;color:var(--text-3);}
.post-nav .txt{font-size:15px;font-weight:600;display:block;margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:24px;}
.faq-item{
  background:#FFFFFF;border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item[open]{box-shadow:var(--shadow-s);}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;font-size:16px;font-weight:600;color:var(--text-1);cursor:pointer;
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .2s ease-out;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:'';position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--brand-ember);border-radius:2px;
}
.faq-item summary .plus::before{width:14px;height:2px;}
.faq-item summary .plus::after{width:2px;height:14px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item[open] summary{color:var(--brand-ink);}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text-2);border-top:1px dashed var(--line);padding-top:16px;margin-top:0;}

/* ---------- 侧栏 ---------- */
.aside-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.aside-card{background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-s);padding:22px;}
.aside-title{font-size:14px;font-weight:600;color:var(--brand-ink);margin-bottom:14px;letter-spacing:.02em;}
.toc-link{
  display:block;font-size:14px;color:var(--text-2);padding:9px 12px;border-radius:8px;
  border-left:3px solid transparent;transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.toc-link:hover{background:var(--bg-soft);color:var(--text-1);}
.toc-link.on{background:var(--bg-soft);color:var(--brand-ink);border-left-color:var(--brand-ember);font-weight:600;}
.aside-list li{padding:12px 0;border-bottom:1px dashed var(--line);}
.aside-list li:last-child{border-bottom:0;padding-bottom:0;}
.aside-list a{font-size:14px;line-height:1.7;color:var(--text-2);display:block;}
.aside-list a:hover{color:var(--brand-nebula);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{
  font-size:12px;color:var(--brand-ink-2);background:var(--bg-soft);
  border-radius:999px;padding:6px 12px;transition:background .2s ease-out,color .2s ease-out;
}
.tag-cloud a:hover{background:var(--brand-ember);color:var(--brand-ink);}
.aside-cta{background:var(--brand-ink);color:#FFFFFF;border-radius:var(--radius-card);padding:22px;position:relative;overflow:hidden;}
.aside-cta h3{color:#FFFFFF;font-size:17px;margin-bottom:10px;}
.aside-cta p{font-size:14px;line-height:1.85;color:#B9B4D0;margin-bottom:16px;}
.aside-cta .btn-primary{width:100%;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;background:var(--brand-ink);color:#FFFFFF;
  padding:80px 0;overflow:hidden;
}
.dot-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.30) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;
}
.cta-band .badge-ember{
  display:inline-flex;background:var(--brand-ember);color:var(--brand-ink);
  font-size:12px;font-weight:700;border-radius:999px;padding:5px 12px;
}
.cta-title{color:#FFFFFF;font-size:30px;line-height:1.35;margin:16px 0 14px;}
.cta-text{color:#B9B4D0;font-size:15px;line-height:1.9;max-width:520px;}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:14px;color:#D9D5EA;align-items:flex-start;}
.cta-points svg{flex:0 0 auto;margin-top:5px;}
.lead-form{background:#FFFFFF;border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-m);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;background:#FFFFFF;border:1px solid var(--line);border-radius:10px;
  padding:12px 16px;font-size:15px;color:var(--text-1);outline:none;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{border-color:var(--brand-nebula);box-shadow:0 0 0 3px rgba(44,191,158,.15);}
.field textarea{min-height:104px;resize:vertical;}
.form-note{font-size:13px;color:var(--brand-ember-2);margin-top:10px;min-height:18px;}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--brand-ink);color:#B9B4D0;overflow:hidden;}
.footer-title{font-size:14px;font-weight:600;color:#FFFFFF;margin-bottom:16px;}
.footer-link{display:inline-block;font-size:14px;color:#B9B4D0;line-height:2.1;transition:color .2s ease-out;}
.footer-link:hover{color:#FFFFFF;}
.divider-fade{height:1px;}
.dot-grid-footer{
  position:absolute;inset:0;pointer-events:none;opacity:.2;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:22px 22px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px;}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-main{max-width:none;}
  .aside-sticky{position:static;}
  .article-title{font-size:30px;}
  .section-title{font-size:24px;}
  .cta-title{font-size:26px;}
}
@media (max-width:767px){
  .container-x{padding-left:20px;padding-right:20px;}
  .header-inner{min-height:60px;}
  .logo-text{font-size:16px;}
  .article-wrap{padding:32px 0 56px;}
  .article-title{font-size:26px;line-height:1.35;}
  .prose-cn p{font-size:15.5px;line-height:1.88;}
  .prose-cn h2{font-size:21px;}
  .prose-cn h3{font-size:18px;}
  .prose-cn table{display:block;overflow-x:auto;white-space:nowrap;}
  .post-nav{grid-template-columns:1fr;}
  .cta-band{padding:56px 0;}
  .cta-title{font-size:23px;}
  .card{padding:20px;}
  .article-layout{gap:32px;}
}

/* roulang page: category1 */
:root{
    --brand-ink:#241F3C;
    --brand-ink-2:#3A3260;
    --brand-ember:#FF6A3D;
    --brand-ember-2:#E4552A;
    --brand-nebula:#2CBF9E;
    --bg-page:#F7F6FB;
    --bg-elev:#FFFFFF;
    --bg-soft:#EFEDF8;
    --line:#E5E3F0;
    --text-1:#1B1830;
    --text-2:#565272;
    --text-3:#8B87A3;
    --shadow-s:0 1px 2px rgba(36,31,60,.06), 0 2px 8px rgba(36,31,60,.05);
    --shadow-m:0 4px 16px rgba(36,31,60,.08);
    --shadow-l:0 14px 36px rgba(36,31,60,.16);
    --radius-card:14px;
    --radius-btn:10px;
    --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:var(--font-cn);
    background:var(--bg-page);
    color:var(--text-1);
    font-size:16px;
    line-height:1.9;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none;}
  a{color:inherit;text-decoration:none;}
  ul,ol{list-style:none;margin:0;padding:0;}
  p{margin:0;}
  button{font-family:inherit;}
  :focus-visible{outline:2px solid var(--brand-ember);outline-offset:2px;border-radius:4px;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-s);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    height:60px;
  }
  .logo{display:flex;align-items:center;gap:10px;min-height:36px;}
  .logo-text{
    font-size:17px;font-weight:700;color:var(--brand-ink);
    letter-spacing:-0.01em;white-space:nowrap;line-height:1.2;
  }
  .nav-list{display:flex;align-items:center;gap:28px;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    font-size:15px;color:var(--text-2);padding:6px 2px;
    transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--brand-ember);transform:scaleX(0);transform-origin:left;
    transition:transform .25s ease;
  }
  .nav-link:hover{color:var(--text-1);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--brand-ink-2);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}
  .nav-link.active::before{
    content:"";width:4px;height:4px;border-radius:50%;
    background:var(--brand-ember);margin-right:6px;flex:0 0 4px;
  }
  .nav-desktop{display:none;}
  .header-actions{display:flex;align-items:center;gap:12px;}
  .search-box{
    display:none;align-items:center;gap:8px;
    background:#F3F2F8;border:1px solid transparent;border-radius:999px;
    padding:8px 14px;width:200px;transition:all .2s ease;
  }
  .search-box:focus-within{
    background:#fff;border-color:var(--brand-nebula);
    box-shadow:0 0 0 3px rgba(44,191,158,.15);
  }
  .search-box input{
    border:0;outline:0;background:transparent;width:100%;
    font-size:14px;color:var(--text-1);font-family:inherit;
  }
  .search-box input::placeholder{color:var(--text-3);}
  .menu-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:var(--radius-btn);
    border:1px solid var(--line);background:#fff;cursor:pointer;
    color:var(--brand-ink);transition:border-color .2s ease,background .2s ease;
  }
  .menu-toggle:hover{border-color:var(--brand-ink);background:#FAFAFD;}

  @media (min-width:1024px){
    .header-inner{height:72px;}
    .nav-desktop{display:block;}
    .search-box{display:flex;}
    .menu-toggle{display:none;}
  }

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1.2;letter-spacing:.01em;
    border-radius:var(--radius-btn);padding:12px 24px;border:1px solid transparent;
    cursor:pointer;white-space:nowrap;
    transition:transform .2s ease-out,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .btn-primary{background:var(--brand-ember);color:var(--brand-ink);border-color:var(--brand-ember);}
  .btn-primary:hover{background:#FF835C;transform:translateY(-2px);box-shadow:var(--shadow-m);}
  .btn-primary:active{background:var(--brand-ember-2);transform:translateY(0);}
  .btn-secondary{background:#fff;color:var(--brand-ink);border-color:var(--line);}
  .btn-secondary:hover{border-color:var(--brand-ink);background:#FAFAFD;transform:translateY(-2px);}
  .btn-secondary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
  .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;}
  .btn-sm{padding:9px 18px;font-size:14px;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--brand-ink-2);
    text-decoration:underline;text-underline-offset:4px;
    transition:color .2s ease;
  }
  .link-arrow:hover{color:var(--brand-nebula);}

  /* ---------- Mobile drawer ---------- */
  .drawer{position:fixed;inset:0;z-index:60;display:none;}
  .drawer.open{display:block;}
  .drawer-mask{position:absolute;inset:0;background:rgba(36,31,60,.45);}
  .drawer-panel{
    position:absolute;top:0;right:0;height:100%;width:84%;max-width:340px;
    background:#fff;padding:24px 20px;overflow-y:auto;box-shadow:var(--shadow-l);
    display:flex;flex-direction:column;gap:20px;
  }
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .drawer-close{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    background:#fff;cursor:pointer;color:var(--brand-ink);font-size:18px;line-height:1;
  }
  .drawer-links{display:flex;flex-direction:column;gap:4px;}
  .drawer-links a{
    display:flex;align-items:center;min-height:44px;padding:0 12px;
    font-size:15px;color:var(--text-2);border-radius:10px;transition:background .2s ease,color .2s ease;
  }
  .drawer-links a:hover{background:var(--bg-soft);color:var(--text-1);}
  .drawer-links a.active{background:var(--bg-soft);color:var(--brand-ink);font-weight:600;}
  .drawer-search{
    display:flex;align-items:center;gap:8px;background:#F3F2F8;
    border:1px solid transparent;border-radius:999px;padding:10px 14px;
  }
  .drawer-search:focus-within{background:#fff;border-color:var(--brand-nebula);box-shadow:0 0 0 3px rgba(44,191,158,.15);}
  .drawer-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;font-family:inherit;color:var(--text-1);}
  .drawer-search input::placeholder{color:var(--text-3);}

  /* ---------- Hero ---------- */
  .page-hero{position:relative;overflow:hidden;background:var(--brand-ink);color:#fff;}
  .page-hero-bg{
    position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
  }
  .page-hero-overlay{position:absolute;inset:0;background:rgba(36,31,60,.68);}
  .hero-inner{position:relative;z-index:2;padding:64px 0 72px;}
  .hero-eyebrow{
    display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em;
    color:#FFB59B;background:rgba(255,106,61,.18);border-radius:999px;
    padding:5px 14px;margin-bottom:18px;
  }
  .hero-title{
    font-size:28px;font-weight:700;line-height:1.28;letter-spacing:-0.02em;
    margin:0 0 18px;color:#fff;max-width:820px;
  }
  .hero-sub{
    font-size:16px;line-height:1.9;color:#E7E4F4;max-width:720px;margin:0 0 30px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

  @media (min-width:768px){
    .hero-inner{padding:80px 0 88px;}
    .hero-title{font-size:34px;}
    .hero-sub{font-size:17px;}
  }
  @media (min-width:1024px){
    .hero-inner{padding:92px 0 96px;}
    .hero-title{font-size:40px;}
  }

  /* ---------- Breadcrumb ---------- */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--text-3);padding:20px 0 0;
  }
  .breadcrumb li{display:inline-flex;align-items:center;}
  .breadcrumb li+li::before{content:"/";margin-right:8px;color:#C3BFD6;}
  .breadcrumb a:hover{color:var(--brand-nebula);}
  .breadcrumb .current{color:var(--text-1);}

  /* ---------- Layout ---------- */
  .layout{display:grid;grid-template-columns:1fr;gap:40px;padding:40px 0 0;}
  @media (min-width:1024px){
    .layout{grid-template-columns:240px 1fr;gap:48px;align-items:start;padding-top:48px;}
  }

  .side-toc{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:18px;box-shadow:var(--shadow-s);
  }
  @media (min-width:1024px){
    .side-toc{position:sticky;top:96px;}
  }
  .side-toc-title{
    font-size:12px;font-weight:600;letter-spacing:.1em;color:var(--text-3);
    text-transform:uppercase;margin:0 0 12px;padding-left:12px;
  }
  .toc-link{
    display:block;font-size:14px;line-height:1.6;color:var(--text-2);
    padding:10px 12px;border-radius:8px;border-left:3px solid transparent;
    transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .toc-link:hover{background:var(--bg-page);color:var(--text-1);}
  .toc-link.active{
    background:var(--bg-soft);color:var(--brand-ink);
    border-left-color:var(--brand-ember);font-weight:600;
  }

  .flow{min-width:0;}
  .section-block{margin-bottom:56px;scroll-margin-top:96px;}
  .section-title{
    font-size:22px;font-weight:700;line-height:1.4;color:var(--brand-ink);
    margin:0 0 14px;
  }
  .section-title::before{
    content:"";display:inline-block;width:3px;height:18px;border-radius:2px;
    background:var(--brand-ember);margin-right:10px;vertical-align:-1px;
  }
  .section-lead{
    font-size:16px;line-height:1.9;color:var(--text-2);
    margin:0 0 28px;max-width:760px;
  }
  @media (min-width:768px){
    .section-title{font-size:24px;}
  }

  /* ---------- Media cards ---------- */
  .media-card{
    display:grid;grid-template-columns:1fr;gap:18px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px;box-shadow:var(--shadow-s);margin-bottom:16px;
    transition:transform .2s ease-out,border-color .2s ease,box-shadow .2s ease;
  }
  .media-card:hover{
    transform:translateY(-3px);
    border-color:rgba(255,106,61,.32);
    box-shadow:var(--shadow-m);
  }
  .media-thumb{
    border-radius:12px;overflow:hidden;background:var(--bg-soft);aspect-ratio:16/9;
  }
  .media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
  .media-card:hover .media-thumb img{transform:scale(1.03);}
  .card-title{
    font-size:18px;font-weight:600;line-height:1.4;color:var(--brand-ink);
    margin:0 0 8px;
  }
  .card-text{font-size:15px;line-height:1.9;color:var(--text-2);margin:0 0 10px;}
  @media (min-width:640px){
    .media-card{grid-template-columns:196px 1fr;align-items:start;}
  }

  /* ---------- Step list ---------- */
  .step-list{display:flex;flex-direction:column;gap:16px;}
  .step-item{
    display:flex;gap:16px;background:#fff;border:1px solid var(--line);
    border-left:3px solid var(--brand-ember);border-radius:var(--radius-card);
    padding:20px;box-shadow:var(--shadow-s);
  }
  .step-num{
    font-size:20px;font-weight:700;color:var(--brand-ember);
    font-variant-numeric:tabular-nums;line-height:1.4;flex:0 0 34px;
  }
  .step-item h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--brand-ink);margin:0 0 6px;}
  .step-item p{font-size:15px;line-height:1.9;color:var(--text-2);}

  /* ---------- Table ---------- */
  .table-wrap{
    overflow-x:auto;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-s);
  }
  .data-table{width:100%;min-width:680px;border-collapse:collapse;font-size:14px;}
  .data-table th{
    background:var(--bg-soft);color:var(--brand-ink);font-weight:600;
    text-align:left;padding:14px 16px;white-space:nowrap;
  }
  .data-table td{
    padding:14px 16px;color:var(--text-2);line-height:1.8;
    border-top:1px solid var(--line);
  }
  .data-table tbody tr:nth-child(even){background:#FBFAFE;}

  /* ---------- Two column tips ---------- */
  .tips-duo{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){.tips-duo{grid-template-columns:1fr 1fr;}}
  .tips-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;box-shadow:var(--shadow-s);
  }
  .tips-card h3{
    display:flex;align-items:center;gap:10px;
    font-size:18px;font-weight:600;color:var(--brand-ink);margin:0 0 14px;
  }
  .tips-icon{
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;border-radius:10px;background:rgba(44,191,158,.12);flex:0 0 36px;
  }
  .tips-list{display:flex;flex-direction:column;gap:10px;}
  .tips-list li{
    position:relative;padding-left:20px;font-size:15px;line-height:1.9;color:var(--text-2);
  }
  .tips-list li::before{
    content:"";position:absolute;left:0;top:13px;width:7px;height:7px;
    border-radius:50%;background:var(--brand-nebula);
  }

  /* ---------- Tags ---------- */
  .tag{
    display:inline-block;font-size:12px;font-weight:600;line-height:1.6;
    padding:3px 10px;border-radius:999px;
    background:rgba(44,191,158,.12);color:var(--brand-nebula);
  }
  .tag-neutral{background:var(--bg-soft);color:var(--text-2);}

  /* ---------- FAQ ---------- */
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:12px;
    margin-bottom:12px;overflow:hidden;
  }
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;font-size:16px;font-weight:600;color:var(--brand-ink-2);
    cursor:pointer;list-style:none;min-height:44px;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand-ink);}
  .faq-item[open] summary{color:var(--brand-ink);}
  .faq-icon{
    position:relative;flex:0 0 18px;width:18px;height:18px;
    transition:transform .25s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--brand-ember);border-radius:2px;
  }
  .faq-icon::before{left:0;top:8px;width:18px;height:2px;}
  .faq-icon::after{left:8px;top:0;width:2px;height:18px;}
  .faq-item[open] .faq-icon{transform:rotate(45deg);}
  .faq-body{
    margin:0 20px 18px;padding-top:16px;border-top:1px dashed var(--line);
    font-size:15px;line-height:1.9;color:var(--text-2);
  }

  /* ---------- CTA band ---------- */
  .cta-band{
    background:#fff;border:1px solid var(--line);border-radius:18px;
    box-shadow:var(--shadow-s);padding:32px 24px;
    display:flex;flex-direction:column;gap:24px;
    scroll-margin-top:96px;
  }
  .cta-band h2{
    font-size:22px;font-weight:700;line-height:1.4;color:var(--brand-ink);margin:0 0 10px;
  }
  .cta-band p{font-size:15px;line-height:1.9;color:var(--text-2);}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
  @media (min-width:900px){
    .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 40px;}
    .cta-band .cta-copy{max-width:640px;}
  }

  /* ---------- Footer ---------- */
  .site-footer{
    position:relative;background:var(--brand-ink);color:#B9B4D0;
    margin-top:88px;overflow:hidden;
  }
  .dot-grid{
    position:absolute;inset:0;pointer-events:none;opacity:.35;
    background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;}
  .footer-link{
    display:inline-block;font-size:14px;line-height:1.7;color:#B9B4D0;
    padding:5px 0;transition:color .2s ease;
  }
  .footer-link:hover{color:#FF9C7A;}
  .site-footer ul{display:flex;flex-direction:column;gap:2px;}
  .divider-fade{height:1px;width:100%;}
  .site-footer .grid{display:grid;grid-template-columns:1fr;gap:40px;}
  .site-footer .flex{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;}
  .site-footer .mb-4{margin-bottom:16px;}
  .site-footer .mt-12{margin-top:48px;}
  .site-footer .mt-6{margin-top:24px;}
  @media (min-width:640px){.site-footer .grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.site-footer .grid{grid-template-columns:repeat(4,1fr);}}

  @media (max-width:768px){
    .container-x{padding-left:20px;padding-right:20px;}
    .section-block{margin-bottom:48px;}
    .layout{gap:32px;padding-top:32px;}
    .cta-band{padding:26px 20px;}
    .site-footer{margin-top:64px;}
  }

/* roulang page: category2 */
:root{
  --brand-ink:#241F3C;
  --brand-ink-2:#3A3260;
  --brand-ember:#FF6A3D;
  --brand-ember-2:#E4552A;
  --brand-nebula:#2CBF9E;
  --bg-page:#F7F6FB;
  --bg-elev:#FFFFFF;
  --bg-soft:#EFEDF8;
  --line:#E5E3F0;
  --text-1:#1B1830;
  --text-2:#565272;
  --text-3:#8B87A3;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-s:0 1px 2px rgba(36,31,60,.06),0 2px 8px rgba(36,31,60,.05);
  --shadow-m:0 4px 16px rgba(36,31,60,.08);
  --shadow-l:0 12px 32px rgba(36,31,60,.14);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;font-family:var(--font-cn);background:var(--bg-page);color:var(--text-1);
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-ember);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(255,106,61,.26);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#F1EFF8;}
::-webkit-scrollbar-thumb{background:#CFCBE0;border-radius:999px;border:2px solid #F1EFF8;}
::-webkit-scrollbar-thumb:hover{background:#B9B4D0;}

.container-x{width:100%;max-width:var(--container);margin:0 auto;padding-left:32px;padding-right:32px;}
.section{padding-top:88px;padding-bottom:88px;}
.section-soft{background:var(--bg-soft);}
.section-tight{padding-top:64px;padding-bottom:64px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-s);}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;min-height:36px;flex:0 0 auto;}
.logo-text{font-size:17px;font-weight:700;color:var(--brand-ink);white-space:nowrap;letter-spacing:-.01em;}
.nav-list{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--text-2);padding:6px 0;transition:color .2s ease;}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand-ember);transition:width .2s ease;}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--brand-ink-2);font-weight:600;}
.nav-link.active::after{width:100%;}
.nav-link.active::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--brand-ink-2);display:inline-block;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{display:none;align-items:center;gap:8px;background:#F3F2F8;border:1px solid transparent;border-radius:999px;
  padding:0 14px;height:40px;width:210px;transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;}
.search-box svg{flex:0 0 auto;color:var(--text-3);}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--text-1);min-width:0;}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{background:#fff;border-color:var(--brand-nebula);box-shadow:0 0 0 3px rgba(44,191,158,.16);}
.search-box-full{display:flex;width:100%;height:44px;}
.header-cta{display:none;align-items:center;justify-content:center;min-height:42px;padding:10px 20px;border-radius:var(--radius-btn);
  background:var(--brand-ember);color:var(--brand-ink);font-size:14px;font-weight:700;white-space:nowrap;transition:background .2s ease,transform .2s ease,box-shadow .2s ease;}
.header-cta:hover{background:#FF8055;transform:translateY(-2px);box-shadow:var(--shadow-m);}
.header-cta:active{background:var(--brand-ember-2);transform:translateY(0);}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);color:var(--brand-ink);transition:background .2s ease,border-color .2s ease;}
.menu-toggle:hover{background:#F7F6FB;border-color:var(--brand-ink);}

/* drawer */
.drawer-overlay{position:fixed;inset:0;background:rgba(36,31,60,.48);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:60;}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:88%;max-width:350px;background:#fff;z-index:61;
  transform:translateX(102%);transition:transform .28s ease;padding:22px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;box-shadow:var(--shadow-l);}
body.drawer-open .drawer-overlay{opacity:1;visibility:visible;}
body.drawer-open .mobile-drawer{transform:translateX(0);}
body.drawer-open{overflow:hidden;}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);color:var(--brand-ink);transition:background .2s ease;}
.icon-btn:hover{background:#F7F6FB;}
.drawer-link{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;font-size:16px;color:var(--text-2);transition:background .2s ease,color .2s ease;}
.drawer-link:hover{background:#F7F6FB;color:var(--text-1);}
.drawer-link.active{background:var(--bg-soft);color:var(--brand-ink-2);font-weight:600;}
.btn-block{width:100%;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  line-height:1;padding:14px 26px;border:1px solid transparent;min-height:46px;white-space:nowrap;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;}
.btn-primary{background:var(--brand-ember);color:var(--brand-ink);}
.btn-primary:hover{background:#FF8055;transform:translateY(-2px);box-shadow:var(--shadow-m);}
.btn-primary:active{background:var(--brand-ember-2);transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand-ink);background:#FAF9FD;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:#F3F2F8;}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.38);}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;transform:translateY(-2px);}
.btn-outline-light:active{transform:translateY(0);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-ink-2);transition:color .2s ease;}
.btn-text:hover{color:var(--brand-nebula);text-decoration:underline;text-underline-offset:4px;}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding-top:22px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;font-size:13px;color:var(--text-3);}
.breadcrumb li{display:inline-flex;align-items:center;}
.breadcrumb li+li::before{content:"/";margin:0 10px;color:#C9C5DB;}
.breadcrumb a{transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-nebula);}
.breadcrumb [aria-current="page"]{color:var(--text-1);}

/* ---------- hero center ---------- */
.hero-center{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,#F7F6FB 100%);padding:64px 0 72px;border-bottom:1px solid var(--line);text-align:center;}
.hero-center .inner{max-width:820px;margin:0 auto;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(44,191,158,.12);color:#1F9E82;
  font-size:12px;font-weight:700;letter-spacing:.06em;border-radius:999px;padding:6px 14px;}
.hero-title{font-size:40px;line-height:1.25;letter-spacing:-.02em;color:var(--brand-ink);margin-top:22px;}
.hero-sub{font-size:16px;line-height:1.9;color:var(--text-2);margin-top:18px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.hero-chips{margin-top:32px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}

/* ---------- tags ---------- */
.tag-nebula{display:inline-flex;align-items:center;background:rgba(44,191,158,.12);color:#1F9E82;border-radius:999px;padding:4px 12px;font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap;}
.tag-plain{display:inline-flex;align-items:center;background:var(--bg-soft);color:var(--text-2);border-radius:999px;padding:4px 12px;font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap;}
.tag-ember{display:inline-flex;align-items:center;background:var(--brand-ember);color:var(--brand-ink);border-radius:999px;padding:4px 12px;font-size:12px;font-weight:700;line-height:1.7;white-space:nowrap;}

/* ---------- section head ---------- */
.section-head{max-width:720px;}
.section-head h2{font-size:28px;color:var(--brand-ink);margin-top:14px;}
.section-head .lead{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.9;}
.section-head-center{margin:0 auto;text-align:center;}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:44px;}
.timeline::before{content:"";position:absolute;top:10px;bottom:10px;left:50%;transform:translateX(-50%);width:1px;
  background-image:linear-gradient(to bottom,var(--line) 0 6px,transparent 6px 12px);background-size:1px 12px;}
.tl-item{position:relative;display:grid;grid-template-columns:1fr 1fr;column-gap:64px;padding-bottom:44px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{position:absolute;left:50%;top:8px;transform:translateX(-50%);width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-ember);box-shadow:0 0 0 6px rgba(255,106,61,.1);z-index:2;}
.tl-left{text-align:right;padding-top:2px;}
.tl-step{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-ember-2);font-variant-numeric:tabular-nums;letter-spacing:.08em;}
.tl-title{font-size:20px;font-weight:600;color:var(--brand-ink);margin-top:6px;line-height:1.4;}
.tl-note{margin-top:8px;font-size:14px;color:var(--text-3);line-height:1.8;}
.tl-right{padding-top:0;}
.tl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-s);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:rgba(255,106,61,.32);}
.tl-media{position:relative;aspect-ratio:16/9;max-height:210px;background:var(--bg-soft);overflow:hidden;}
.tl-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.tl-card:hover .tl-media img{transform:scale(1.03);}
.tl-body{padding:22px 24px 24px;}
.tl-body p{font-size:15px;color:var(--text-2);line-height:1.9;}
.tl-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- split block ---------- */
.split-block{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);column-gap:64px;align-items:start;}
.split-left h2{font-size:28px;color:var(--brand-ink);margin-top:14px;}
.split-left .lead{margin-top:14px;font-size:15px;color:var(--text-2);line-height:1.9;}
.point-item{display:flex;gap:18px;padding:24px 0;border-top:1px dashed var(--line);}
.point-item:first-child{border-top:0;padding-top:0;}
.point-num{flex:0 0 auto;font-size:13px;font-weight:700;color:var(--brand-ember-2);font-variant-numeric:tabular-nums;letter-spacing:.08em;padding-top:5px;}
.point-item h3{font-size:18px;font-weight:600;color:var(--brand-ink);}
.point-item p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.9;}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:40px;}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-s);transition:transform .2s ease,box-shadow .2s ease;}
.metric:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);}
.metric-value{font-size:32px;font-weight:700;color:var(--brand-ember-2);font-variant-numeric:tabular-nums;line-height:1.2;}
.metric-label{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- cards grid ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px;}
.channel-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-s);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:rgba(44,191,158,.4);}
.channel-media{aspect-ratio:16/9;background:var(--bg-soft);overflow:hidden;}
.channel-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.channel-card:hover .channel-media img{transform:scale(1.03);}
.channel-body{padding:22px;display:flex;flex-direction:column;gap:10px;}
.channel-body h3{font-size:18px;font-weight:600;color:var(--brand-ink);}
.channel-body p{font-size:14px;color:var(--text-2);line-height:1.8;}
.channel-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px;}

/* ---------- steps strip ---------- */
.strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-s);overflow:hidden;}
.strip-item{padding:24px;border-left:1px dashed var(--line);}
.strip-item:first-child{border-left:0;}
.strip-item .n{font-size:13px;font-weight:700;color:var(--brand-ember-2);font-variant-numeric:tabular-nums;letter-spacing:.08em;}
.strip-item h3{margin-top:8px;font-size:16px;font-weight:600;color:var(--brand-ink);}
.strip-item p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- faq ---------- */
.faq-list{margin-top:36px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 22px;margin-bottom:12px;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item:hover{border-color:#D6D2E8;}
.faq-item[open]{border-color:rgba(255,106,61,.4);box-shadow:var(--shadow-s);}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:600;
  color:var(--text-1);cursor:pointer;list-style:none;min-height:56px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{flex:0 0 auto;color:var(--brand-ember-2);transition:transform .2s ease;}
.faq-item[open] summary{color:var(--brand-ink);}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-answer{border-top:1px dashed var(--line);padding:16px 0 20px;font-size:15px;color:var(--text-2);line-height:1.9;}

/* ---------- cta band ---------- */
.cta-band{position:relative;background:var(--brand-ink);color:#fff;padding:72px 0;overflow:hidden;}
.cta-band .dot-grid{position:absolute;inset:0;background-image:radial-gradient(rgba(185,180,208,.36) 1px,transparent 1px);background-size:22px 22px;opacity:.18;pointer-events:none;}
.cta-band h2{font-size:28px;color:#fff;line-height:1.35;}
.cta-band p{margin-top:14px;font-size:16px;color:#B9B4D0;line-height:1.9;max-width:560px;}
.cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--brand-ink);color:#B9B4D0;overflow:hidden;}
.site-footer .dot-grid{position:absolute;inset:0;background-image:radial-gradient(rgba(185,180,208,.34) 1px,transparent 1px);background-size:22px 22px;opacity:.2;pointer-events:none;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-link{display:inline-block;font-size:14px;color:#B9B4D0;line-height:2.1;transition:color .2s ease,padding-left .2s ease;}
.footer-link:hover{color:#fff;}
.site-footer ul li{min-height:32px;}
.divider-fade{height:1px;}

/* ---------- responsive ---------- */
@media (min-width:640px){
  .header-cta{display:inline-flex;}
}
@media (min-width:1024px){
  .search-box{display:flex;}
  .menu-toggle{display:none;}
}
@media (max-width:1024px){
  .section{padding-top:72px;padding-bottom:72px;}
  .hero-title{font-size:32px;}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .strip-item:nth-child(3){border-left:0;}
  .strip-item:nth-child(n+3){border-top:1px dashed var(--line);}
}
@media (max-width:900px){
  .timeline::before{left:15px;transform:none;}
  .tl-item{grid-template-columns:1fr;row-gap:16px;padding-left:52px;padding-bottom:40px;}
  .tl-node{left:15px;top:8px;transform:translateX(-50%);}
  .tl-left{text-align:left;}
  .split-block{grid-template-columns:1fr;row-gap:32px;}
  .point-item:first-child{padding-top:0;}
}
@media (max-width:768px){
  .container-x{padding-left:20px;padding-right:20px;}
  .header-inner{height:60px;gap:14px;}
  .logo-text{font-size:15px;}
  .section{padding-top:56px;padding-bottom:56px;}
  .hero-center{padding:44px 0 56px;}
  .hero-title{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .section-head h2,.split-left h2,.cta-band h2{font-size:22px;}
  .metrics{grid-template-columns:1fr;gap:16px;}
  .channel-grid{grid-template-columns:1fr;gap:18px;}
  .strip{grid-template-columns:1fr;}
  .strip-item{border-left:0;border-top:1px dashed var(--line);}
  .strip-item:first-child{border-top:0;}
  .btn{width:100%;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .cta-band{padding:56px 0;}
}
@media (max-width:520px){
  .logo-text{font-size:14px;}
  .metric-value{font-size:28px;}
  .tl-title{font-size:18px;}
}