/* roulang page: index */
:root{
    --c-primary:#17695A;
    --c-primary-ink:#0E4A3F;
    --c-accent:#E28A2F;
    --c-ink:#101C1A;
    --c-bg:#F7F8F6;
    --c-surface:#FFFFFF;
    --c-text:#1A2321;
    --c-text-2:#5C6866;
    --c-line:#E4E8E4;
    --c-tint:#E8F1EE;
    --r-card:16px;
    --r-img:20px;
    --r-btn:10px;
    --r-badge:999px;
    --sh-1:0 1px 2px rgba(16,28,26,.04);
    --sh-2:0 18px 40px -24px rgba(16,28,26,.28);
    --sp-section:64px;
    --font-cn:"MiSans","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    color:var(--c-text);
    background:var(--c-bg);
    letter-spacing:0;
    overflow-x:hidden;
  }
  h1,h2,h3,h4{margin:0;letter-spacing:-0.02em;color:var(--c-ink);font-weight:700;}
  p{margin:0;color:var(--c-text-2);}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-text);}
  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
  .num,.kpi-value,time,.cap-num,.metric-value{font-variant-numeric:tabular-nums;}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media(min-width:768px){.wrap{padding-left:32px;padding-right:32px;}}
  @media(min-width:1024px){.wrap{padding-left:48px;padding-right:48px;}}

  /* ---------- Header ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(247,248,246,.55);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid rgba(255,255,255,.35);
    box-shadow:0 1px 2px rgba(16,28,26,.04);
    transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
  }
  .site-header.is-solid{
    background:rgba(255,255,255,.94);
    border-bottom-color:var(--c-line);
    box-shadow:0 8px 24px -18px rgba(16,28,26,.35);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    height:76px;transition:height .24s ease;
  }
  .site-header.is-solid .header-inner{height:64px;}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{width:34px;height:34px;flex:0 0 auto;}
  .brand-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:-0.01em;white-space:nowrap;}
  .main-nav{display:none;}
  @media(min-width:1024px){
    .main-nav{display:flex;align-items:center;gap:6px;}
  }
  .nav-link{
    position:relative;display:inline-block;padding:10px 12px;font-size:15px;color:var(--c-text);
    border-radius:8px;transition:color .2s ease,background .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
    background:var(--c-primary);transform:scaleX(0);transform-origin:left;
    transition:transform .24s cubic-bezier(.22,.61,.36,1);
  }
  .nav-link:hover{color:var(--c-primary);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--c-primary);font-weight:600;}
  .nav-link.is-active::after{transform:scaleX(1);}
  .header-actions{display:flex;align-items:center;gap:8px;}
  .icon-btn{
    width:36px;height:36px;display:none;align-items:center;justify-content:center;
    border:1px solid var(--c-line);background:rgba(255,255,255,.7);border-radius:10px;
    color:var(--c-text);cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .icon-btn:hover{background:var(--c-tint);color:var(--c-primary);border-color:#CDE3DC;}
  @media(min-width:1024px){.icon-btn{display:inline-flex;}}
  .hamburger{
    width:40px;height:40px;display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
    background:rgba(255,255,255,.72);border:1px solid var(--c-line);border-radius:10px;cursor:pointer;
  }
  @media(min-width:1024px){.hamburger{display:none;}}
  .hamburger span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .24s ease,opacity .24s ease;}
  .hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .hamburger.is-open span:nth-child(2){opacity:0;}
  .hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    white-space:nowrap;
  }
  .btn .arrow{transition:transform .2s ease;}
  .btn:hover .arrow{transform:translateX(4px);}
  .btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
  .btn-primary:hover{background:var(--c-primary-ink);}
  .btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-line-strong,#CBD5CF);}
  .btn-ghost:hover{background:var(--c-tint);border-color:var(--c-primary);color:var(--c-primary-ink);}
  .btn-light{background:#fff;color:var(--c-primary-ink);}
  .btn-light:hover{background:#EAF4F0;}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-block{width:100%;}
  .btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
    border-bottom:2px solid rgba(23,105,90,.28);padding-bottom:2px;
    transition:color .2s ease,border-color .2s ease;
  }
  .link-arrow:hover{color:var(--c-primary-ink);border-color:var(--c-primary-ink);}
  .link-arrow .arrow{transition:transform .2s ease;}
  .link-arrow:hover .arrow{transform:translateX(4px);}

  /* ---------- Badges ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:var(--r-badge);
    background:var(--c-tint);color:var(--c-primary-ink);
    font-size:12.5px;font-weight:600;line-height:1.6;
  }
  .badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block;}
  .tag-outline{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-badge);
    border:1px solid var(--c-line);background:rgba(255,255,255,.8);font-size:13px;color:var(--c-text-2);
  }

  /* ---------- Section head ---------- */
  .section{padding-top:var(--sp-section);padding-bottom:var(--sp-section);}
  @media(min-width:768px){.section{padding-top:88px;padding-bottom:88px;}}
  @media(min-width:1280px){.section{padding-top:112px;padding-bottom:112px;}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
  .section-tag{
    display:block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-primary);
    text-transform:uppercase;margin-bottom:10px;
  }
  .section-title{font-size:clamp(1.4rem,2.6vw,2.1rem);line-height:1.25;}
  .section-sub{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:640px;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;padding-top:132px;padding-bottom:56px;
    background:var(--c-bg);overflow:hidden;
  }
  @media(min-width:768px){.hero{padding-top:152px;padding-bottom:72px;}}
  @media(min-width:1280px){.hero{padding-top:172px;padding-bottom:96px;}}
  .hero-glow{
    position:absolute;top:-160px;right:-80px;width:640px;height:640px;border-radius:50%;
    background:radial-gradient(circle,rgba(226,138,47,.16) 0%,rgba(226,138,47,0) 68%);
    pointer-events:none;
  }
  .cloud-line{position:absolute;left:-40px;top:120px;width:460px;opacity:.08;pointer-events:none;}
  .hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:48px;align-items:center;}
  @media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;}}
  .hero-title{font-size:clamp(2rem,4.6vw,3.5rem);line-height:1.12;font-weight:750;}
  .hero-title em{font-style:normal;color:var(--c-primary);}
  .hero-sub{margin-top:18px;font-size:17px;line-height:1.75;color:var(--c-text-2);max-width:560px;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
  .trust-item{
    display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-badge);
    border:1px solid var(--c-line);background:rgba(255,255,255,.75);font-size:13px;color:var(--c-text-2);
  }
  .trust-item i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:block;}
  .hero-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-2);}
  .hero-media img{width:100%;height:100%;aspect-ratio:3/2;object-fit:cover;}
  .hero-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(140deg,rgba(23,105,90,.28) 0%,rgba(23,105,90,0) 58%);
  }
  .hero-media-cap{
    position:absolute;left:18px;bottom:16px;z-index:2;
    background:rgba(255,255,255,.9);border-radius:var(--r-badge);
    padding:7px 14px;font-size:12.5px;color:var(--c-primary-ink);font-weight:600;
  }
  .img-fallback{background:linear-gradient(135deg,#E8F1EE 0%,#CDE3DC 100%);}

  /* ---------- KPI ---------- */
  .kpi-grid{display:grid;grid-template-columns:1fr;gap:18px;}
  @media(min-width:768px){.kpi-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.kpi-grid{grid-template-columns:1.15fr 1fr 1fr 1fr;}}
  .kpi-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--sh-1);transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease;
  }
  .kpi-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  .kpi-card.is-highlight{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
  .kpi-card.is-highlight .kpi-label,.kpi-card.is-highlight .kpi-note{color:rgba(255,255,255,.82);}
  .kpi-value{font-size:38px;font-weight:750;line-height:1.1;color:var(--c-ink);letter-spacing:-0.03em;}
  .kpi-card.is-highlight .kpi-value{color:#fff;font-size:48px;}
  .kpi-unit{font-size:14px;font-weight:600;margin-left:4px;}
  .kpi-label{margin-top:10px;font-size:14px;color:var(--c-text-2);}
  .kpi-note{margin-top:8px;font-size:12px;color:var(--c-text-2);}
  .kpi-note.up{color:var(--c-primary);}
  .kpi-note.down{color:var(--c-accent);}
  .kpi-card.is-highlight .kpi-note.up{color:#BFEDE0;}

  /* ---------- Bento ---------- */
  .bento{display:grid;grid-template-columns:1fr;gap:18px;}
  @media(min-width:1024px){.bento{grid-template-columns:repeat(12,1fr);}}
  .bento-main{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
    transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease;
  }
  .bento-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  @media(min-width:1024px){.bento-main{grid-column:span 7;}}
  .bento-side{display:grid;grid-template-columns:1fr;gap:18px;}
  @media(min-width:1024px){.bento-side{grid-column:span 5;}}
  .bento-mini{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--sh-1);transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease;
  }
  .bento-mini:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  .icon-line{width:44px;height:44px;border-radius:12px;background:var(--c-tint);display:flex;align-items:center;justify-content:center;color:var(--c-primary);}
  .icon-line svg{width:24px;height:24px;stroke:var(--c-primary);stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;}
  .bento-title{margin-top:16px;font-size:1.25rem;}
  .bento-text{margin-top:10px;font-size:15px;line-height:1.8;}
  .bento-divider{height:1px;background:var(--c-line);margin:22px 0;}
  .bento-figure{margin-top:20px;border-radius:14px;overflow:hidden;border:1px solid var(--c-line);}
  .bento-figure img{width:100%;aspect-ratio:16/7;object-fit:cover;}
  .cap-row{display:grid;grid-template-columns:1fr;gap:14px;margin-top:18px;}
  @media(min-width:768px){.cap-row{grid-template-columns:repeat(3,1fr);}}
  @media(min-width:1024px){.cap-row{grid-column:span 12;}}
  .cap-item{
    display:flex;align-items:center;gap:14px;padding:16px 18px;border:1px solid var(--c-line);
    border-radius:14px;background:var(--c-surface);box-shadow:var(--sh-1);
    transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease;
  }
  .cap-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  .cap-num{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.06em;}
  .cap-label{font-size:13.5px;color:var(--c-text);font-weight:600;}

  /* ---------- Compare ---------- */
  .compare-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media(min-width:1024px){.compare-grid{grid-template-columns:1.25fr 1fr;gap:28px;align-items:stretch;}}
  .compare-pair{display:grid;grid-template-columns:1fr;gap:0;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-surface);box-shadow:var(--sh-1);}
  @media(min-width:768px){.compare-pair{grid-template-columns:1fr 1fr;}}
  .compare-col{padding:26px;}
  .compare-col.plain{background:#F1F3F1;}
  .compare-col.cloud{background:var(--c-tint);border-left:1px solid rgba(23,105,90,.28);}
  @media(max-width:767px){.compare-col.cloud{border-left:none;border-top:1px solid rgba(23,105,90,.28);}}
  .compare-col h3{font-size:1rem;margin-bottom:14px;}
  .compare-list{list-style:none;margin:0;padding:0;}
  .compare-list li{display:flex;gap:10px;padding:11px 0;font-size:14.5px;color:var(--c-text-2);border-bottom:1px dashed rgba(16,28,26,.1);}
  .compare-list li:last-child{border-bottom:none;}
  .compare-list li b{color:var(--c-text);font-weight:600;}
  .dot-x{color:#98A29E;font-weight:700;}
  .dot-ok{color:var(--c-primary);font-weight:700;}
  .metric-list{display:flex;flex-direction:column;gap:20px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);}
  .metric-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;}
  .metric-label{font-size:14px;color:var(--c-text-2);}
  .metric-value{font-size:20px;font-weight:750;color:var(--c-ink);}
  .metric-bar{height:6px;border-radius:999px;background:#EDF1EE;margin-top:10px;overflow:hidden;}
  .metric-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-accent) 100%);width:0;transition:width 1.1s cubic-bezier(.22,.61,.36,1);}

  /* ---------- Scenes ---------- */
  .scene-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media(min-width:768px){.scene-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.scene-grid{grid-template-columns:repeat(3,1fr);}}
  .scene-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease;
    display:flex;flex-direction:column;
  }
  .scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  .scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .scene-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .scene-body h3{font-size:1.0625rem;}
  .scene-body p{font-size:14.5px;}
  .scene-meta{margin-top:auto;padding-top:12px;font-size:12.5px;color:var(--c-text-2);display:flex;align-items:center;gap:8px;}

  /* ---------- News ---------- */
  .news-layout{display:grid;grid-template-columns:1fr;gap:22px;}
  @media(min-width:1024px){.news-layout{grid-template-columns:1.05fr .95fr;gap:28px;}}
  .news-feature{
    display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease;
  }
  .news-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
  .news-feature-media{overflow:hidden;position:relative;}
  .news-feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
  .news-feature:hover .news-feature-media img{transform:scale(1.03);}
  .news-feature-body{padding:24px;display:flex;flex-direction:column;gap:12px;}
  .news-feature-body h3{font-size:1.25rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-feature-body p{font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-2);}
  .news-meta svg{width:14px;height:14px;stroke:var(--c-text-2);stroke-width:1.5;fill:none;}
  .news-list{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
  .news-item{
    display:block;padding:20px 24px;border-bottom:1px solid var(--c-line);
    transition:background .2s ease,padding-left .2s ease;
  }
  .news-item:last-child{border-bottom:none;}
  .news-item:hover{background:#FAFBFA;padding-left:28px;}
  .news-item h3{font-size:1.0625rem;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
  .news-item:hover h3{color:var(--c-primary);}
  .news-item p{margin-top:8px;font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-empty{
    display:flex;flex-direction:column;align-items:center;gap:14px;padding:64px 24px;text-align:center;
    background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-card);
  }
  .news-empty svg{width:52px;height:52px;stroke:#B9C4BF;stroke-width:1.5;fill:none;}

  /* ---------- Evidence ---------- */
  .evidence{
    display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-img);
    padding:28px;box-shadow:var(--sh-1);
  }
  @media(min-width:1024px){.evidence{grid-template-columns:.9fr 1.1fr;padding:34px;gap:36px;}}
  .evidence-media{border-radius:16px;overflow:hidden;border:1px solid var(--c-line);}
  .evidence-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
  .evidence-list{list-style:none;margin:18px 0 0;padding:0;}
  .evidence-list li{display:flex;gap:12px;padding:18px 0;border-bottom:1px solid var(--c-line);}
  .evidence-list li:last-child{border-bottom:none;padding-bottom:0;}
  .evidence-list b{display:block;font-size:15px;color:var(--c-ink);}
  .evidence-list span{font-size:14px;color:var(--c-text-2);}
  .check{flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--c-tint);display:flex;align-items:center;justify-content:center;}
  .check svg{width:12px;height:12px;stroke:var(--c-primary);stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round;}

  /* ---------- FAQ ---------- */
  .faq{max-width:800px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--c-line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 4px;background:none;border:none;cursor:pointer;text-align:left;
    font-size:16px;font-weight:600;color:var(--c-ink);transition:color .2s ease;
  }
  .faq-q:hover{color:var(--c-primary);}
  .faq-icon{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
    display:flex;align-items:center;justify-content:center;color:var(--c-primary);
    font-size:16px;line-height:1;transition:transform .24s ease,background .24s ease;
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-tint);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.22,.61,.36,1);}
  .faq-a p{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

  /* ---------- CTA form ---------- */
  .cta-band{background:var(--c-ink);color:#fff;position:relative;overflow:hidden;}
  .cta-band::before{
    content:"";position:absolute;top:-140px;left:-80px;width:520px;height:520px;border-radius:50%;
    background:radial-gradient(circle,rgba(23,105,90,.42) 0%,rgba(23,105,90,0) 70%);
  }
  .cta-inner{position:relative;display:grid;grid-template-columns:1fr;gap:36px;}
  @media(min-width:1024px){.cta-inner{grid-template-columns:1fr 1fr;gap:56px;align-items:start;}}
  .cta-band h2{color:#fff;font-size:clamp(1.4rem,2.6vw,2.1rem);}
  .cta-band p{color:rgba(255,255,255,.76);font-size:15px;margin-top:14px;max-width:480px;}
  .cta-points{list-style:none;margin:24px 0 0;padding:0;display:flex;flex-direction:column;gap:12px;}
  .cta-points li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.86);}
  .cta-points svg{width:18px;height:18px;stroke:#7FD4C0;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto;margin-top:3px;}
  .form-card{background:#fff;border-radius:var(--r-img);padding:26px;box-shadow:0 30px 60px -34px rgba(0,0,0,.6);}
  .field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;}
  .field label{font-size:13px;font-weight:600;color:var(--c-text);}
  .field input,.field select,.field textarea{
    width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
    background:#FCFDFC;transition:border-color .2s ease,box-shadow .2s ease;outline:none;
  }
  .field textarea{min-height:96px;resize:vertical;}
  .field input:focus,.field select:focus,.field textarea:focus{
    border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(23,105,90,.13);
  }
  .privacy{margin-top:12px;font-size:12px;color:var(--c-text-2);text-align:center;}
  .form-note{margin-top:14px;font-size:13px;color:var(--c-primary);display:none;}
  .form-note.is-show{display:block;}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding-top:64px;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:44px;}
  @media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:44px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-text{color:#fff;}
  .footer-brand .brand-mark{width:32px;height:32px;}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px;}
  .footer-col h3{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease;}
  .footer-col a:hover{color:#8FE0CB;}
  .footer-col li{font-size:14px;color:rgba(255,255,255,.62);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);padding:18px 0 26px;
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.5);
  }

  /* ---------- Drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(16,28,26,.45);opacity:0;visibility:hidden;
    transition:opacity .24s ease,visibility .24s ease;z-index:70;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    border-left:1px solid var(--c-line);border-radius:16px 0 0 16px;
    padding:24px 22px;transform:translateX(100%);
    transition:transform .28s cubic-bezier(.22,.61,.36,1);
    display:flex;flex-direction:column;gap:6px;box-shadow:-20px 0 50px -30px rgba(16,28,26,.5);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer .nav-link{display:block;padding:14px 12px;font-size:16px;border-radius:10px;}
  .drawer .nav-link::after{display:none;}
  .drawer .nav-link.is-active{background:var(--c-tint);}
  .drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:12px;}

  /* ---------- Reveal ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .28s cubic-bezier(.22,.61,.36,1),transform .28s cubic-bezier(.22,.61,.36,1);}
  .reveal.is-in{opacity:1;transform:none;}
  @media(prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category1 */
:root{
  --c-primary:#17695A;
  --c-primary-ink:#0E4A3F;
  --c-accent:#E28A2F;
  --c-ink:#101C1A;
  --c-bg:#F7F8F6;
  --c-surface:#FFFFFF;
  --c-text:#1A2321;
  --c-text-2:#5C6866;
  --c-line:#E4E8E4;
  --c-tint:#E8F1EE;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,28,26,.04);
  --sh-2:0 18px 40px -24px rgba(16,28,26,.28);
  --font-cn:"MiSans","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(2rem,4.6vw,3.5rem);line-height:1.12;font-weight:750}
h2{font-size:clamp(1.4rem,2.6vw,2.1rem);line-height:1.25}
h3{font-size:1.2rem;line-height:1.4}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num,.kpi,.tnum{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.wrap{padding:0 32px}}
@media(min-width:1024px){.wrap{padding:0 48px}}

/* ---------- header ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  background:rgba(247,248,246,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:0 6px 24px -18px rgba(16,28,26,.35);
  transition:background .24s ease,height .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-solid{position:fixed;background:rgba(255,255,255,.94);border-bottom-color:var(--c-line);box-shadow:0 10px 30px -22px rgba(16,28,26,.45)}
.header-inner{display:flex;align-items:center;gap:18px;height:76px;transition:height .24s ease}
.site-header.is-solid .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-width:0}
.brand-mark{width:34px;height:34px;flex:0 0 auto}
.brand-text{font-weight:750;font-size:1.0625rem;color:var(--c-ink);letter-spacing:-.02em;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:6px;margin-left:auto}
.nav-link{position:relative;padding:10px 12px;font-size:.9375rem;color:var(--c-text);border-radius:8px;transition:color .2s ease,background .2s ease}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:650}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.main-nav+.header-actions{margin-left:0}
.icon-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;background:transparent;border-radius:999px;cursor:pointer;color:var(--c-ink);transition:background .2s ease,border-color .2s ease}
.icon-btn:hover{background:var(--c-tint);border-color:var(--c-line)}
.hamburger{width:40px;height:40px;display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;border:1px solid var(--c-line);background:rgba(255,255,255,.7);border-radius:10px;cursor:pointer}
.hamburger span{display:block;width:18px;height:1.6px;background:var(--c-ink);border-radius:2px;transition:transform .24s ease,opacity .24s ease}
@media(min-width:1024px){
  .main-nav{display:flex}
  .hamburger{display:none}
}
/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(16,28,26,.45);opacity:0;pointer-events:none;transition:opacity .24s ease;z-index:70}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;transform:translateX(102%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  border-left:1px solid var(--c-line);border-radius:16px 0 0 16px;box-shadow:var(--sh-2);padding:20px;display:flex;flex-direction:column;gap:6px}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:8px}
.drawer a.drawer-link{padding:12px 10px;border-radius:10px;font-size:.9375rem}
.drawer a.drawer-link:hover{background:var(--c-tint);color:var(--c-primary)}
.drawer a.drawer-link.is-active{background:var(--c-tint);color:var(--c-primary);font-weight:650}
.drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);display:grid;gap:10px}
.drawer-note{font-size:.8125rem;color:var(--c-text-2);line-height:1.7}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:.9375rem;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn .arrow{transition:transform .2s ease}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-ink)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:var(--c-tint)}
.btn-dark-ghost{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}
.btn-dark-ghost:hover{background:rgba(255,255,255,.12)}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
.btn-sm{height:38px;padding:0 16px;font-size:.875rem}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:.9375rem;font-weight:600;color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;text-decoration-color:rgba(23,105,90,.35)}
.link-more .arrow{transition:transform .2s ease}
.link-more:hover .arrow{transform:translateX(4px)}

/* ---------- hero ---------- */
.cat-hero{position:relative;min-height:45vh;display:flex;align-items:flex-end;overflow:hidden;background:#0E1B18}
.cat-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;transform:scale(1.02)}
.cat-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,28,26,.72) 0%,rgba(16,28,26,.55) 45%,rgba(16,28,26,.66) 100%)}
.cat-hero-tint{position:absolute;inset:0;background:rgba(23,105,90,.12)}
.cat-hero-lines{position:absolute;left:-40px;bottom:-30px;width:420px;opacity:.07;pointer-events:none}
.cat-hero-inner{position:relative;z-index:2;width:100%;padding:120px 0 34px;color:#fff}
.cat-hero-inner h1{color:#fff;text-shadow:0 2px 20px rgba(16,28,26,.35)}
.cat-hero-sub{margin-top:14px;font-size:1rem;color:rgba(255,255,255,.86);max-width:660px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:22px;font-size:.8125rem;color:rgba(255,255,255,.75)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.55}
.crumb .now{color:#fff}

/* ---------- section basics ---------- */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:88px 0}}
@media(min-width:1024px){.section{padding:104px 0}}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;letter-spacing:.08em;color:var(--c-primary);font-weight:700;text-transform:uppercase}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-primary);border-radius:2px}
.sec-sub{margin-top:10px;font-size:.9375rem;color:var(--c-text-2);max-width:640px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:var(--c-tint);color:var(--c-primary);font-size:.8125rem;font-weight:600}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.badge-accent{background:rgba(226,138,47,.12);color:#9A5B14}
.badge-accent .dot{background:var(--c-accent)}

/* ---------- layout with sticky toc ---------- */
.cat-layout{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.cat-layout{grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}}
.toc{position:relative}
@media(min-width:1024px){
  .toc-inner{position:sticky;top:96px;border-left:1px solid var(--c-line);padding-left:18px}
}
.toc-tabs{display:flex;gap:8px;overflow-x:auto;padding:4px 0 10px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.toc-tabs::-webkit-scrollbar{display:none}
.toc-tab{flex:0 0 auto;padding:8px 14px;border:1px solid var(--c-line);border-radius:999px;background:var(--c-surface);font-size:.8125rem;color:var(--c-text-2);white-space:nowrap}
.toc-tab.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
@media(min-width:1024px){.toc-tabs{display:none}}
.toc-title{font-size:.8125rem;letter-spacing:.08em;color:var(--c-text-2);font-weight:700;margin-bottom:12px}
.toc-list{display:grid;gap:2px}
.toc-link{display:block;padding:9px 10px;border-radius:8px;font-size:.875rem;color:var(--c-text-2);transition:background .2s ease,color .2s ease}
.toc-link:hover{background:var(--c-tint);color:var(--c-primary)}
.toc-link.active{background:var(--c-tint);color:var(--c-primary);font-weight:650}
.toc-hint{margin-top:18px;font-size:.8125rem;color:var(--c-text-2);line-height:1.75}

/* ---------- block 1: 图文左图右文 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:24px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1)}
@media(min-width:768px){.split{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:32px;padding:26px;align-items:center}}
.split-media{border-radius:var(--r-lg);overflow:hidden;position:relative;border:1px solid var(--c-line);background:linear-gradient(135deg,#E8F1EE,#F7F8F6)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.split-body h3{font-size:1.3125rem}
.split-body p{margin-top:12px;color:var(--c-text-2);font-size:.9375rem}
.mini-list{margin-top:18px;display:grid;gap:10px}
.mini-item{display:flex;gap:10px;align-items:flex-start;font-size:.9375rem}
.mini-item svg{flex:0 0 auto;margin-top:3px;color:var(--c-primary)}

/* ---------- block 2: 步骤条 ---------- */
.steps{display:grid;gap:0;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;background:var(--c-surface);box-shadow:var(--sh-1)}
.step{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;padding:22px 22px;border-top:1px solid var(--c-line)}
.step:first-child{border-top:0}
.step-no{font-size:1.0625rem;font-weight:750;color:var(--c-accent);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.step-body h3{font-size:1.0625rem}
.step-body p{margin-top:8px;font-size:.9rem;color:var(--c-text-2)}
.step-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}

/* ---------- block 3: 参数表 ---------- */
.table-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.table-head{padding:20px 22px;border-bottom:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.table-scroll{overflow-x:auto}
table.param{width:100%;border-collapse:collapse;min-width:520px}
table.param th,table.param td{padding:14px 22px;text-align:left;font-size:.9rem;border-top:1px solid var(--c-line)}
table.param thead th{background:var(--c-tint);color:var(--c-primary);font-weight:650;border-top:0;font-size:.8125rem;letter-spacing:.04em}
table.param tbody tr:hover{background:#FBFCFB}
table.param td.k{color:var(--c-text-2);width:34%}
table.param td.v{font-weight:600;font-variant-numeric:tabular-nums}
.table-note{padding:14px 22px;font-size:.8125rem;color:var(--c-text-2);border-top:1px solid var(--c-line);background:#FCFDFC}

/* ---------- block 4: 版本行式列表 ---------- */
.release-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.release{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 22px;border-top:1px solid var(--c-line)}
.release:first-child{border-top:0}
.release:hover{background:#FBFCFB}
.release-v{font-weight:700;font-variant-numeric:tabular-nums;color:var(--c-ink);font-size:.9375rem}
.release-t{font-size:.9rem;color:var(--c-text-2)}
.release-t strong{display:block;color:var(--c-text);font-size:.9375rem;font-weight:600;margin-bottom:2px}
.release-time{font-size:.8125rem;color:var(--c-text-2);font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 4px;background:transparent;border:0;text-align:left;font-size:1rem;font-weight:650;color:var(--c-ink);cursor:pointer}
.faq-sign{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .24s ease}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px}
.faq-sign::before{left:0;right:0;top:10px;height:2px}
.faq-sign::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.is-open .faq-sign{transform:rotate(45deg)}
.faq-a{display:none;padding:0 4px 22px;font-size:.9375rem;line-height:1.85;color:var(--c-text-2)}
.faq-item.is-open .faq-a{display:block}

/* ---------- cta ---------- */
.cta-band{background:var(--c-tint);border:1px solid #D6E6E0;border-radius:var(--r-lg);padding:28px 26px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.cta-band h2{font-size:clamp(1.25rem,2.2vw,1.65rem)}
.cta-band p{margin-top:8px;font-size:.9375rem;color:var(--c-text-2);max-width:560px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.78);padding:56px 0 24px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:.875rem;line-height:1.8;color:rgba(255,255,255,.68);max-width:320px}
.footer-col h3{font-size:.9375rem;color:#fff;margin-bottom:14px;letter-spacing:0}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:.875rem;color:rgba(255,255,255,.72);line-height:1.7}
.footer-col a{color:rgba(255,255,255,.78);transition:color .2s ease}
.footer-col a:hover{color:#8FE0CB}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:.8125rem;color:rgba(255,255,255,.55)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .28s cubic-bezier(.22,.61,.36,1),transform .28s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --c-primary:#17695A;
  --c-primary-ink:#0E4A3F;
  --c-accent:#E28A2F;
  --c-ink:#101C1A;
  --c-bg:#F7F8F6;
  --c-surface:#FFFFFF;
  --c-text:#1A2321;
  --c-text-2:#5C6866;
  --c-line:#E4E8E4;
  --c-tint:#E8F1EE;
  --r-card:16px;
  --r-img:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,28,26,.04);
  --sh-2:0 18px 40px -24px rgba(16,28,26,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"MiSans","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.25;color:var(--c-ink)}
p{margin:0 0 1.2em}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.wrap{padding:0 32px}}
@media(min-width:1024px){.wrap{padding:0 48px}}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,248,246,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:0 1px 2px rgba(16,28,26,.04);
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-solid{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--c-line);
  box-shadow:0 14px 30px -26px rgba(16,28,26,.45);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .24s ease}
.site-header.is-solid .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;flex:0 0 auto}
.brand-name{font-size:17px;font-weight:750;color:var(--c-ink);letter-spacing:-.02em;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:28px}
@media(min-width:1024px){.main-nav{display:flex}}
.nav-link{position:relative;font-size:15px;color:var(--c-text);padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.nav-link:hover{color:var(--c-primary-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary-ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid transparent;background:transparent;color:var(--c-text-2);
  transition:background .2s ease,color .2s ease,border-color .2s ease;cursor:pointer
}
.icon-btn:hover{background:var(--c-tint);color:var(--c-primary-ink);border-color:var(--c-line)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 24px -18px rgba(23,105,90,.9)}
.btn-primary:hover{background:var(--c-primary-ink)}
.btn-primary .arrow{transition:transform .22s var(--ease)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-line)}
.btn-ghost:hover{background:var(--c-tint);border-color:var(--c-primary)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.hamburger{display:inline-flex}
@media(min-width:1024px){.hamburger{display:none}}
.drawer-mask{position:fixed;inset:0;background:rgba(16,28,26,.45);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:80}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:90;
  background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  border-left:1px solid var(--c-line);border-radius:16px 0 0 16px;box-shadow:var(--sh-2);
  padding:24px 22px;transform:translateX(102%);transition:transform .28s var(--ease);display:flex;flex-direction:column;gap:6px}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-link{display:block;padding:14px 12px;border-radius:12px;font-size:16px;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.drawer-link:last-of-type{border-bottom:0}
.drawer-link.is-active{color:var(--c-primary-ink);font-weight:700;background:var(--c-tint)}
.drawer-link:hover{background:var(--c-tint)}
.drawer-cta{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.drawer-note{font-size:13px;color:var(--c-text-2);line-height:1.7}

/* ---------- page head ---------- */
.page-head{position:relative;overflow:hidden;background:var(--c-bg);border-bottom:1px solid var(--c-line)}
.page-head::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(226,138,47,.10),rgba(226,138,47,0) 70%);pointer-events:none
}
.page-head .contour{position:absolute;left:-60px;bottom:-40px;width:420px;opacity:.07;pointer-events:none}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2);padding:22px 0 6px}
.crumbs a{color:var(--c-text-2);transition:color .2s ease}
.crumbs a:hover{color:var(--c-primary-ink)}
.crumbs .sep{color:#B9C1BE}
.crumbs .now{max-width:56vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--c-text)}
.article-head{padding:8px 0 34px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-tint);color:var(--c-primary-ink);font-size:12.5px;font-weight:600
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.article-title{
  font-size:clamp(1.75rem,3.2vw,2.5rem);font-weight:700;line-height:1.28;letter-spacing:-.02em;
  margin:16px 0 14px;max-width:900px
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-text-2)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C4CCCA}
.figure{margin:0}
.cover{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-1);background:linear-gradient(140deg,#E8F1EE,#F7F8F6)}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figcap{font-size:12px;color:var(--c-text-2);margin-top:10px}

/* ---------- layout ---------- */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.layout{display:grid;gap:40px}
@media(min-width:1024px){.layout{grid-template-columns:minmax(0,1fr) 300px;gap:56px}}
.article-body{max-width:740px;font-size:16.5px;line-height:1.9;color:var(--c-text)}
.article-body p{margin:0 0 1.2em}
.article-body h2{position:relative;font-size:clamp(1.3rem,2.2vw,1.7rem);font-weight:700;margin:2.2em 0 .8em;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;background:var(--c-primary)}
.article-body h3{font-size:1.25rem;font-weight:650;margin:1.8em 0 .6em}
.article-body ul{margin:0 0 1.2em;padding-left:2px}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.article-body ol{margin:0 0 1.2em;counter-reset:li}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:.5em;counter-increment:li}
.article-body ol li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;font-size:13px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;background:var(--c-tint);border-left:3px solid var(--c-primary);
  border-radius:0 12px 12px 0;color:var(--c-ink)
}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--c-primary-ink)}
.article-body img{border-radius:16px;margin:1.6em auto;border:1px solid var(--c-line)}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body th{background:var(--c-tint);color:var(--c-ink);font-weight:650}
.article-body pre{background:var(--c-ink);color:#D9E6E2;border-radius:14px;padding:18px 20px;overflow:auto;font-size:14px;line-height:1.7}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em}
.article-body p code,.article-body li code{background:var(--c-tint);color:var(--c-primary-ink);padding:2px 6px;border-radius:6px}
.empty-state{
  max-width:740px;border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
  padding:48px 28px;text-align:center
}
.empty-state h2{font-size:1.25rem;margin-bottom:10px}
.empty-state p{color:var(--c-text-2);font-size:15px}

/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px}
@media(min-width:1024px){.sidebar{position:sticky;top:96px;align-self:start}}
.panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px}
.panel h3{font-size:15px;font-weight:700;margin-bottom:14px}
.side-list li{border-bottom:1px solid var(--c-line)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:14px;color:var(--c-text);transition:color .2s ease}
.side-list a:hover{color:var(--c-primary-ink)}
.side-list .idx{font-size:12px;color:#9AA5A2;font-variant-numeric:tabular-nums}
.panel-ink{background:var(--c-ink);border-color:var(--c-ink)}
.panel-ink h3{color:#fff}
.panel-ink p{color:#B7C4C0;font-size:13.5px;margin-bottom:14px}
.panel-ink .btn{width:100%}
.panel-ink .btn-primary{background:var(--c-primary);color:#fff}
.panel-ink .btn-primary:hover{background:#1B7A68}

/* ---------- related ---------- */
.block-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-primary);text-transform:uppercase}
.block-head h2{font-size:clamp(1.4rem,2.6vw,2.1rem);font-weight:700;margin-top:8px}
.block-head .sub{font-size:15px;color:var(--c-text-2);margin-top:8px;max-width:640px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14.5px;font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.cards{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s ease
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D5E2DD}
.card .thumb{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(140deg,#E8F1EE,#F1F3F1)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:17px;font-weight:650;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card p{font-size:14px;color:var(--c-text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2);margin-top:auto}
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}

/* ---------- CTA strip ---------- */
.cta-strip{background:var(--c-tint);border:1px solid #D2E4DE;border-radius:var(--r-card);padding:32px 28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.cta-strip h2{font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:700}
.cta-strip p{font-size:14.5px;color:var(--c-text-2);margin:8px 0 0;max-width:560px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:#C6D2CE;margin-top:80px;padding:64px 0 0}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.brand-text{font-size:17px;font-weight:750;color:#fff;letter-spacing:-.02em}
.footer-desc{font-size:14px;line-height:1.8;color:#95A5A1;margin:0;max-width:320px}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:11px;font-size:14px;color:#95A5A1;line-height:1.7}
.footer-col ul a{color:#95A5A1;transition:color .2s ease}
.footer-col ul a:hover{color:#8FE0CB}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.10);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7C8A86
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .28s var(--ease),transform .28s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --c-primary:#17695A;
  --c-primary-ink:#0E4A3F;
  --c-accent:#E28A2F;
  --c-ink:#101C1A;
  --c-bg:#F7F8F6;
  --c-surface:#FFFFFF;
  --c-text:#1A2321;
  --c-text-2:#5C6866;
  --c-line:#E4E8E4;
  --c-tint:#E8F1EE;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-soft:0 1px 2px rgba(16,28,26,.04);
  --sh-lift:0 18px 40px -24px rgba(16,28,26,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"MiSans","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
.num{font-variant-numeric:tabular-nums;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.wrap{padding-left:32px;padding-right:32px;}}
@media (min-width:1024px){.wrap{padding-left:48px;padding-right:48px;}}

h1,h2,h3{letter-spacing:-.02em;line-height:1.2;color:var(--c-ink);font-weight:750;}
h1{font-size:clamp(2rem,4.6vw,3.5rem);line-height:1.12;}
h2{font-size:clamp(1.4rem,2.6vw,2.1rem);}
h3{font-size:1.125rem;font-weight:700;}

/* ============ 按钮族 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn .arrow{display:inline-block;transition:transform .2s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 24px -18px rgba(23,105,90,.9);}
.btn-primary:hover{background:var(--c-primary-ink);}
.btn-ghost{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:var(--c-tint);}
.btn-ghost-light{border:1px solid rgba(255,255,255,.45);color:#fff;background:transparent;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600;border-bottom:2px solid rgba(23,105,90,.25);padding-bottom:2px;transition:border-color .2s var(--ease),color .2s var(--ease);}
.link-arrow:hover{border-color:var(--c-primary);color:var(--c-primary-ink);}
.link-arrow span{transition:transform .2s var(--ease);}
.link-arrow:hover span{transform:translateX(4px);}

.icon-btn{width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;color:var(--c-text);transition:background-color .2s var(--ease),color .2s var(--ease);}
.icon-btn:hover{background:var(--c-tint);color:var(--c-primary);}

a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:8px;
}

/* ============ 导航 ============ */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  background:rgba(247,248,246,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.35);
  box-shadow:0 8px 26px -22px rgba(16,28,26,.5);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-solid{
  position:fixed;
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--c-line);
  box-shadow:0 12px 34px -26px rgba(16,28,26,.55);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .24s var(--ease);}
.site-header.is-solid .header-inner{height:64px;}

.brand{display:inline-flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{width:34px;height:34px;flex:none;}
.brand-text{font-size:17px;font-weight:750;letter-spacing:-.02em;color:var(--c-ink);white-space:nowrap;}

.main-nav{display:none;align-items:center;gap:4px;}
@media (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:8px;
  font-size:15px;color:var(--c-text);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:650;}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:8px;}
.header-actions .btn-primary{display:none;}
@media (min-width:768px){.header-actions .btn-primary{display:inline-flex;}}

.hamburger{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;border-radius:10px;padding:0 9px;transition:background-color .2s var(--ease);}
.hamburger span{display:block;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.hamburger:hover{background:var(--c-tint);}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (min-width:1024px){.hamburger{display:none;}}

.drawer-overlay{position:fixed;inset:0;background:rgba(16,28,26,.45);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70;}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:80;
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-left:1px solid var(--c-line);border-radius:16px 0 0 16px;
  box-shadow:-20px 0 50px -30px rgba(16,28,26,.6);
  transform:translateX(100%);transition:transform .28s var(--ease);
  padding:22px 22px 28px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:8px;}
.drawer .nav-link{display:block;padding:12px 10px;font-size:16px;border-radius:10px;}
.drawer .nav-link::after{display:none;}
.drawer .nav-link:hover{background:var(--c-tint);}
.drawer .nav-link.is-active{background:var(--c-tint);}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px;}
.drawer-foot .tip{font-size:13px;color:var(--c-text-2);}

/* ============ 页头 Hero ============ */
.page-hero{position:relative;overflow:hidden;background:var(--c-ink);min-height:46vh;display:flex;align-items:flex-end;}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(16,28,26,.58);}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,105,90,.28) 0%,rgba(23,105,90,.10) 60%,rgba(16,28,26,.55) 100%);}
.page-hero .cloud-line{position:absolute;left:-40px;top:0;width:520px;height:100%;opacity:.08;pointer-events:none;}
.page-hero-inner{position:relative;z-index:2;padding-top:150px;padding-bottom:44px;width:100%;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#E8F1EE;font-size:13px;}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.page-hero h1{color:#fff;margin-top:16px;max-width:16em;}
.page-hero .lead{margin-top:14px;max-width:44em;font-size:clamp(15px,1.6vw,17px);line-height:1.85;color:rgba(255,255,255,.86);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:26px;font-size:13px;color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.45);}
.breadcrumb .current{color:#fff;max-width:min(72vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 标签条 ============ */
.tag-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.tag-bar-inner{display:flex;align-items:center;gap:18px;padding-top:14px;padding-bottom:14px;}
.tag-bar-label{display:none;font-size:12px;letter-spacing:.08em;color:var(--c-primary);font-weight:700;white-space:nowrap;}
@media (min-width:768px){.tag-bar-label{display:inline-block;padding-right:18px;border-right:1px solid var(--c-line);}}
.tag-scroll{display:flex;gap:10px;overflow-x:auto;padding-bottom:2px;-webkit-overflow-scrolling:touch;scrollbar-width:none;}
.tag-scroll::-webkit-scrollbar{display:none;}
.tag-pill{
  flex:none;display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--c-line);background:var(--c-bg);font-size:14px;color:var(--c-text-2);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.tag-pill:hover{background:var(--c-tint);color:var(--c-primary);border-color:rgba(23,105,90,.35);}
.tag-pill.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}

/* ============ 通用区块 ============ */
.section{padding-top:64px;padding-bottom:64px;}
@media (min-width:1024px){.section{padding-top:88px;padding-bottom:88px;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px;}
.eyebrow{display:block;font-size:12px;letter-spacing:.08em;color:var(--c-primary);font-weight:700;margin-bottom:10px;}
.section-head p.sub{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:52em;}

/* ============ 交错图文区块 ============ */
.feature-list{border-top:1px solid var(--c-line);}
.feature-row{
  display:grid;gap:32px;align-items:center;
  padding-top:56px;padding-bottom:56px;border-bottom:1px solid var(--c-line);
}
@media (min-width:1024px){
  .feature-row{grid-template-columns:1fr 1fr;gap:64px;padding-top:76px;padding-bottom:76px;}
  .feature-row.is-reverse .feature-media{order:-1;}
}
.feature-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-soft);background:linear-gradient(140deg,#EAF3F0 0%,#F7F8F6 55%,#E9EFEC 100%);
}
.feature-media img{width:100%;aspect-ratio:4 / 3;object-fit:cover;transition:transform .4s var(--ease);}
.feature-media:hover img{transform:scale(1.02);}
.feature-body h2{margin-bottom:14px;}
.feature-body p{color:var(--c-text-2);font-size:15.5px;}
.check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--c-text);align-items:flex-start;}
.check-list li::before{
  content:"";flex:none;width:18px;height:18px;margin-top:5px;border-radius:50%;
  background:var(--c-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 6.2l2.2 2.2 4.8-4.8' fill='none' stroke='%2317695A' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px 12px no-repeat;
}
.mini-grid{display:grid;gap:14px;margin-top:24px;}
@media (min-width:640px){.mini-grid{grid-template-columns:repeat(3,1fr);}}
.mini-card{border:1px solid var(--c-line);border-radius:14px;background:var(--c-surface);padding:16px 16px 14px;box-shadow:var(--sh-soft);transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lift);}
.mini-card .val{font-size:26px;font-weight:750;color:var(--c-primary);letter-spacing:-.02em;line-height:1.2;}
.mini-card .val em{font-style:normal;font-size:13px;font-weight:600;color:var(--c-text-2);margin-left:3px;}
.mini-card .k{font-size:13px;color:var(--c-text-2);margin-top:6px;}

.meter-list{margin-top:26px;border-top:1px solid var(--c-line);}
.meter{padding:18px 0;border-bottom:1px solid var(--c-line);}
.meter-top{display:flex;align-items:baseline;justify-content:space-between;gap:14px;font-size:14px;color:var(--c-text);}
.meter-top b{font-weight:700;font-size:16px;color:var(--c-ink);}
.meter-top .delta{font-size:12px;color:var(--c-primary);font-weight:600;}
.meter-bar{margin-top:10px;height:6px;border-radius:999px;background:var(--c-tint);overflow:hidden;}
.meter-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-accent) 100%);}
.meter-note{padding:14px 0 0;font-size:13px;color:var(--c-text-2);}

/* ============ 三要素提示 ============ */
.point-band{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-soft);padding:26px;}
@media (min-width:1024px){.point-band{padding:34px;}}
.point-grid{display:grid;gap:22px;margin-top:20px;}
@media (min-width:768px){.point-grid{grid-template-columns:repeat(3,1fr);gap:28px;}}
.point-item{display:flex;gap:14px;align-items:flex-start;}
.point-num{flex:none;font-variant-numeric:tabular-nums;font-size:13px;font-weight:750;color:var(--c-accent);letter-spacing:.06em;line-height:1.9;}
.point-item h3{font-size:16px;margin-bottom:6px;}
.point-item p{font-size:14px;color:var(--c-text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:16px;font-weight:650;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:none;font-size:22px;line-height:1;color:var(--c-primary);font-weight:400;
  transition:transform .24s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:64em;}

/* ============ 深色 CTA ============ */
.cta-dark{background:var(--c-ink);color:#fff;position:relative;overflow:hidden;}
.cta-dark::before{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(226,138,47,.18) 0%,rgba(226,138,47,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;gap:28px;padding-top:64px;padding-bottom:64px;}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.15fr .85fr;align-items:center;gap:56px;padding-top:82px;padding-bottom:82px;}}
.cta-dark h2{color:#fff;}
.cta-dark p{color:rgba(255,255,255,.78);font-size:15.5px;margin-top:14px;max-width:38em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-card);padding:24px;}
.cta-card h3{color:#fff;font-size:16px;margin-bottom:14px;}
.cta-card ul{display:flex;flex-direction:column;gap:12px;}
.cta-card li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.8);}
.cta-card li::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--c-accent);margin-top:10px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#C7D2CE;padding-top:64px;}
.footer-grid{display:grid;gap:34px;padding-bottom:44px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:30em;}
.footer-col h3{color:#fff;font-size:14px;letter-spacing:.02em;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li,.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a{transition:color .2s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:20px;padding-bottom:28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .28s var(--ease),transform .28s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .btn .arrow,.feature-media img{transition:none;}
}