/* roulang page: index */
:root{
    --c-obsidian:#1B1526;
    --c-plum:#2A2140;
    --c-celadon:#2FBF9E;
    --c-coral:#FF6A3D;
    --c-paper:#F7F5F2;
    --c-white:#FFFFFF;
    --c-ink:#1F1B24;
    --c-sub:#5C5566;
    --c-line:#E8E4DE;
    --r-card:16px;
    --r-btn:12px;
    --r-input:10px;
    --sh-soft:0 6px 24px rgba(27,21,38,.08);
    --sh-lift:0 12px 32px rgba(27,21,38,.14);
    --gap-sec:88px;
    --gap-sec-m:58px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
    background:var(--c-paper);
    color:var(--c-ink);
    font-size:16.5px;
    line-height:1.9;
    letter-spacing:.005em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .2s ease-out}
  button{font-family:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
  ul,ol{list-style:none}
  :focus-visible{outline:2px solid var(--c-celadon);outline-offset:2px;border-radius:6px}

  .container-x{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 32px;
  }
  .sec{padding:var(--gap-sec) 0}
  .sec-tight{padding:64px 0}
  .sec-head{max-width:760px;margin-bottom:40px}
  .sec-eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.18em;color:var(--c-celadon);
    font-weight:600;margin-bottom:14px;
  }
  .sec-eyebrow::before{content:"";width:22px;height:1px;background:var(--c-celadon);display:block}
  .sec-title{
    font-size:32px;line-height:1.3;font-weight:700;color:var(--c-ink);
    letter-spacing:-.015em;
  }
  .sec-desc{margin-top:14px;font-size:15.5px;color:var(--c-sub);line-height:1.85}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(27,21,38,.94);
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .header-inner{
    display:flex;align-items:center;gap:22px;
    min-height:72px;
  }
  .brand{display:flex;flex-direction:column;line-height:1.06;flex-shrink:0}
  .brand-main{
    font-size:19px;font-weight:700;color:#fff;letter-spacing:.01em;
  }
  .brand-sub{
    font-size:12px;font-weight:500;color:var(--c-celadon);
    letter-spacing:.34em;margin-top:3px;
  }
  .nav-chips{
    display:flex;align-items:center;gap:8px;
    flex:1;justify-content:center;
    overflow-x:auto;scrollbar-width:none;
    -ms-overflow-style:none;
    padding:6px 0;
    scroll-snap-type:x proximity;
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{
    flex:0 0 auto;scroll-snap-align:center;
    display:inline-flex;align-items:center;justify-content:center;
    min-height:44px;padding:0 16px;
    border-radius:999px;
    font-size:14px;font-weight:500;
    color:rgba(255,255,255,.72);
    background:transparent;
    border:1px solid transparent;
    white-space:nowrap;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  .chip:hover{color:#fff;background:var(--c-plum);border-color:rgba(47,191,158,.35)}
  .chip-active,.chip-active:hover{
    background:var(--c-celadon);color:#0E2A23;font-weight:600;border-color:var(--c-celadon);
  }
  .header-cta{flex-shrink:0}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;
    border-radius:var(--r-btn);
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .2s ease-out;
  }
  .btn-primary{
    background:var(--c-coral);color:#fff;
    box-shadow:0 6px 18px rgba(255,106,61,.28);
  }
  .btn-primary:hover{background:#F25A2C;transform:translateY(-1px)}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{
    background:transparent;color:#fff;
    border-color:rgba(255,255,255,.4);
  }
  .btn-ghost:hover{border-color:var(--c-celadon);color:var(--c-celadon)}
  .btn-ghost:active{transform:scale(.98)}
  .btn-dark{
    background:var(--c-obsidian);color:#fff;
  }
  .btn-dark:hover{background:var(--c-plum);transform:translateY(-1px)}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--c-celadon);font-weight:600;font-size:15px;
    text-decoration:underline;text-underline-offset:4px;
    background:none;border:0;cursor:pointer;padding:0;
  }
  .btn-text:hover{color:#20A585}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    min-height:560px;
    display:flex;align-items:center;
    overflow:hidden;
    background:var(--c-obsidian);
  }
  .hero-bg{
    position:absolute;inset:0;
    background-size:cover;background-position:center;
    opacity:.55;
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(45deg,rgba(27,21,38,.96) 0%,rgba(27,21,38,.78) 45%,rgba(27,21,38,.28) 100%);
  }
  .hero-inner{position:relative;z-index:2;padding-top:76px;padding-bottom:76px}
  .hero-eyebrow{
    display:inline-flex;align-items:center;gap:10px;
    font-size:13px;font-weight:600;letter-spacing:.16em;
    color:var(--c-celadon);
    border:1px solid rgba(47,191,158,.45);
    border-radius:999px;
    padding:7px 16px;
    background:rgba(47,191,158,.08);
  }
  .hero h1{
    margin-top:24px;
    font-size:48px;line-height:1.25;font-weight:700;
    color:#fff;letter-spacing:-.02em;
    max-width:820px;
  }
  .hero-sub{
    margin-top:18px;
    font-size:17px;color:rgba(255,255,255,.82);
    max-width:640px;line-height:1.9;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
  .hero-chips{
    display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;
  }
  .hero-chips li{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14px;color:rgba(255,255,255,.88);
    background:rgba(255,255,255,.07);
    border:1px solid rgba(255,255,255,.16);
    border-radius:999px;
    padding:8px 16px;
    backdrop-filter:blur(4px);
  }
  .hero-chips li::before{
    content:"";width:6px;height:6px;border-radius:50%;
    background:var(--c-celadon);flex:0 0 auto;
  }
  .hero-chips li:nth-child(2)::before{background:var(--c-coral)}

  /* ---------- Stats strip ---------- */
  .stats-strip{
    background:#fff;
    border-bottom:1px solid var(--c-line);
  }
  .stats-grid{
    display:grid;grid-template-columns:repeat(3,1fr);
    gap:24px;
    padding:30px 0;
  }
  .stat-item{border-left:2px solid var(--c-celadon);padding-left:18px}
  .stat-item:nth-child(2){border-left-color:var(--c-coral)}
  .stat-item:nth-child(3){border-left-color:var(--c-plum)}
  .stat-num{font-size:28px;font-weight:700;color:var(--c-ink);line-height:1.2;letter-spacing:-.02em}
  .stat-label{font-size:13.5px;color:var(--c-sub);margin-top:6px}

  /* ---------- Category entries ---------- */
  .cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .cat-card{
    background:#fff;border:1px solid var(--c-line);
    border-radius:var(--r-card);
    padding:26px;
    box-shadow:var(--sh-soft);
    display:flex;flex-direction:column;gap:12px;
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lift);border-color:rgba(47,191,158,.5)}
  .cat-tag{
    align-self:flex-start;
    font-size:12.5px;font-weight:600;letter-spacing:.06em;
    color:#0E2A23;background:rgba(47,191,158,.16);
    border-radius:999px;padding:5px 12px;
  }
  .cat-card h3{font-size:20px;font-weight:700;line-height:1.45;color:var(--c-ink)}
  .cat-card p{font-size:14.5px;color:var(--c-sub);line-height:1.85}
  .cat-card .more{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--c-coral)}

  /* ---------- Steps ---------- */
  .steps-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
  .step-card{
    position:relative;
    background:#fff;border:1px solid var(--c-line);
    border-radius:var(--r-card);
    padding:26px 22px 24px;
    box-shadow:var(--sh-soft);
    transition:transform .2s ease-out,box-shadow .2s ease-out;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lift)}
  .step-num{
    font-size:34px;font-weight:700;line-height:1;
    color:var(--c-celadon);letter-spacing:-.03em;
  }
  .step-icon{
    width:40px;height:40px;border-radius:12px;
    background:var(--c-plum);
    display:flex;align-items:center;justify-content:center;
    color:var(--c-celadon);font-size:17px;
    margin:16px 0 14px;
  }
  .step-card h3{font-size:19px;font-weight:700;color:var(--c-ink);line-height:1.5}
  .step-card p{margin-top:9px;font-size:14.5px;color:var(--c-sub);line-height:1.85}

  /* ---------- Reward cards ---------- */
  .reward-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
  .reward-card{
    background:#fff;border:1px solid var(--c-line);border-left-width:4px;
    border-left-color:var(--c-celadon);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--sh-soft);
    display:flex;flex-direction:column;
    transition:transform .2s ease-out,box-shadow .2s ease-out;
  }
  .reward-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lift)}
  .reward-card.is-coral{border-left-color:var(--c-coral)}
  .reward-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-plum)}
  .reward-media img{width:100%;height:100%;object-fit:cover}
  .reward-badge{
    position:absolute;top:10px;left:10px;
    font-size:12px;font-weight:600;color:#fff;
    background:rgba(27,21,38,.82);
    border-radius:999px;padding:4px 11px;
    backdrop-filter:blur(4px);
  }
  .reward-badge.is-coral{background:var(--c-coral)}
  .reward-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px}
  .reward-body h3{font-size:17.5px;font-weight:700;color:var(--c-ink);line-height:1.5}
  .reward-line{display:flex;flex-wrap:wrap;gap:8px}
  .tag{
    font-size:12.5px;color:var(--c-sub);
    background:var(--c-paper);
    border:1px solid var(--c-line);
    border-radius:999px;padding:4px 11px;
  }
  .tag-celadon{color:#0E2A23;background:rgba(47,191,158,.15);border-color:rgba(47,191,158,.35)}
  .tag-coral{color:#8A2C11;background:rgba(255,106,61,.14);border-color:rgba(255,106,61,.32)}
  .reward-note{font-size:13.5px;color:var(--c-sub);line-height:1.75}

  /* ---------- Task progress ---------- */
  .task-panel{
    background:var(--c-obsidian);
    border-radius:24px;
    padding:52px 48px;
    color:#fff;
    overflow:hidden;
    position:relative;
  }
  .task-panel::before{
    content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(47,191,158,.28) 0%,rgba(47,191,158,0) 70%);
  }
  .task-head{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}
  .task-head h2{font-size:30px;font-weight:700;line-height:1.35;letter-spacing:-.02em}
  .task-head p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.7);max-width:620px}
  .task-percent{font-size:38px;font-weight:700;color:var(--c-coral);line-height:1;letter-spacing:-.02em}
  .task-percent span{font-size:15px;color:rgba(255,255,255,.6);margin-left:8px;font-weight:500}
  .progress-track{
    position:relative;z-index:1;
    height:8px;border-radius:999px;background:#E8E4DE;
    margin:36px 0 0;
    overflow:hidden;
  }
  .progress-fill{
    height:100%;width:0;border-radius:999px;
    background:linear-gradient(90deg,var(--c-celadon),var(--c-coral));
    transition:width .6s ease-out;
  }
  .milestone-row{
    position:relative;z-index:1;
    display:grid;grid-template-columns:repeat(5,1fr);
    gap:12px;margin-top:22px;
  }
  .milestone{display:flex;flex-direction:column;align-items:flex-start;gap:9px}
  .ms-dot{
    width:14px;height:14px;border-radius:50%;
    background:#E8E4DE;border:2px solid var(--c-obsidian);
  }
  .ms-done .ms-dot{background:var(--c-celadon)}
  .ms-current .ms-dot{
    background:var(--c-coral);
    box-shadow:0 0 0 0 rgba(255,106,61,.6);
    animation:pulse 2s infinite;
  }
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(255,106,61,.5)}
    70%{box-shadow:0 0 0 12px rgba(255,106,61,0)}
    100%{box-shadow:0 0 0 0 rgba(255,106,61,0)}
  }
  .ms-name{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);line-height:1.5}
  .ms-desc{font-size:12.5px;color:rgba(255,255,255,.55);line-height:1.6}
  .task-foot{position:relative;z-index:1;margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}

  /* ---------- CTA band ---------- */
  .cta-band{
    background:linear-gradient(120deg,var(--c-plum) 0%,var(--c-obsidian) 70%);
    border-radius:24px;
    padding:48px;
    display:flex;flex-wrap:wrap;gap:28px;
    align-items:center;justify-content:space-between;
    color:#fff;
  }
  .cta-band h2{font-size:28px;font-weight:700;line-height:1.4;letter-spacing:-.02em}
  .cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:600px}
  .cta-band-actions{display:flex;flex-wrap:wrap;gap:14px}

  /* ---------- CMS list ---------- */
  .post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .post-card{
    background:#fff;border:1px solid var(--c-line);
    border-radius:var(--r-card);
    padding:24px;
    display:flex;flex-direction:column;gap:14px;
    box-shadow:var(--sh-soft);
    transition:transform .2s ease-out,box-shadow .2s ease-out;
  }
  .post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lift)}
  .post-card h3{
    font-size:18px;font-weight:700;line-height:1.55;color:var(--c-ink);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-card:hover h3{color:var(--c-celadon)}
  .post-card p{
    font-size:14.5px;color:var(--c-sub);line-height:1.85;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-meta{
    margin-top:auto;
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding-top:14px;border-top:1px solid var(--c-line);
    font-size:13px;color:var(--c-sub);
  }
  .post-meta .post-cat{
    color:#0E2A23;background:rgba(47,191,158,.15);
    border-radius:999px;padding:4px 11px;font-weight:600;font-size:12.5px;
  }
  .empty-state{
    grid-column:1/-1;
    background:#fff;border:1px dashed var(--c-line);
    border-radius:var(--r-card);
    padding:56px 28px;text-align:center;
  }
  .empty-state .icon{
    width:48px;height:48px;border-radius:14px;margin:0 auto 16px;
    background:rgba(47,191,158,.14);color:var(--c-celadon);
    display:flex;align-items:center;justify-content:center;font-size:22px;
  }
  .empty-state p{font-size:15px;color:var(--c-sub);margin-bottom:18px}

  /* ---------- FAQ ---------- */
  .faq-list{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-soft)}
  .faq-item + .faq-item{border-top:1px solid var(--c-line)}
  .faq-q{
    width:100%;text-align:left;background:none;border:0;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 26px;
    font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.7;
    transition:color .2s ease-out,background .2s ease-out;
  }
  .faq-q:hover{color:var(--c-celadon);background:#FCFBFA}
  .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-coral);font-size:17px;line-height:1;
    transition:transform .2s ease-out,border-color .2s ease-out;
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--c-coral)}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .2s ease-out;
  }
  .faq-a-inner{
    padding:0 26px 22px;
    font-size:15px;color:var(--c-sub);line-height:1.85;
    max-width:900px;
  }

  /* ---------- Footer ---------- */
  .site-footer{background:var(--c-obsidian);color:rgba(255,255,255,.72);margin-top:0}
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;
    padding:64px 0 48px;
  }
  .footer-brand .brand-main{font-size:20px}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:320px}
  .footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
  .footer-col li + li{margin-top:11px}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.66)}
  .footer-col a:hover{color:var(--c-celadon)}
  .footer-note{font-size:13.5px;color:rgba(255,255,255,.5);line-height:1.9}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);
    padding:22px 0 30px;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.45);
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1024px){
    :root{--gap-sec:72px}
    .hero h1{font-size:40px}
    .steps-wrap{grid-template-columns:repeat(2,1fr)}
    .reward-grid{grid-template-columns:repeat(2,1fr)}
    .cat-grid{grid-template-columns:1fr}
    .post-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .task-panel{padding:42px 32px}
    .milestone-row{grid-template-columns:repeat(3,1fr);gap:20px}
  }
  @media (max-width:768px){
    .container-x{padding:0 24px}
    .header-inner{flex-wrap:wrap;min-height:0;padding-top:14px;gap:16px}
    .nav-chips{
      order:3;width:100%;justify-content:flex-start;
      padding-bottom:12px;
    }
    .header-cta{margin-left:auto}
    .hero{min-height:440px}
    .hero h1{font-size:32px;line-height:1.3}
    .hero-inner{padding-top:56px;padding-bottom:56px}
    .sec-title{font-size:25px}
    .steps-wrap{grid-template-columns:1fr}
    .reward-grid{grid-template-columns:1fr}
    .post-grid{grid-template-columns:1fr}
    .stats-grid{grid-template-columns:1fr;gap:18px;padding:24px 0}
    .task-panel{padding:32px 22px;border-radius:20px}
    .task-head h2{font-size:24px}
    .milestone-row{grid-template-columns:1fr 1fr}
    .cta-band{padding:32px 24px;border-radius:20px}
    .cta-band h2{font-size:23px}
    .faq-q{padding:18px 18px;font-size:16px}
    .faq-a-inner{padding:0 18px 18px}
    .footer-grid{grid-template-columns:1fr;padding:48px 0 36px}
  }
  @media (max-width:520px){
    body{font-size:16px}
    .container-x{padding:0 16px}
    .hero h1{font-size:29px}
    .sec{padding:56px 0}
    .btn{width:100%}
    .hero-actions{flex-direction:column;align-items:stretch}
    .hero-actions .btn{width:100%}
    .header-cta{width:auto}
    .milestone-row{grid-template-columns:1fr}
    .cta-band-actions{width:100%}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    html{scroll-behavior:auto}
    .btn:hover,.cat-card:hover,.step-card:hover,.reward-card:hover,.post-card:hover{transform:none}
  }

/* roulang page: article */
:root{
  --ink:#1F1B24;
  --ink-2:#5C5566;
  --line:#E8E4DE;
  --paper:#F7F5F2;
  --white:#FFFFFF;
  --obsidian:#1B1526;
  --obsidian-2:#2A2140;
  --celadon:#2FBF9E;
  --celadon-dim:rgba(47,191,158,.14);
  --coral:#FF6A3D;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:12px;
  --shadow-soft:0 6px 24px rgba(27,21,38,.08);
  --shadow-lift:0 12px 32px rgba(27,21,38,.14);
  --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:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:17px;
  line-height:1.9;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
::selection{background:var(--celadon);color:#fff}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px;border-radius:6px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(27,21,38,.93);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(232,228,222,.14);
}
.header-inner{display:flex;align-items:center;gap:26px;min-height:74px}
.brand{display:flex;flex-direction:column;line-height:1.05;flex:0 0 auto}
.brand-main{color:#fff;font-size:20px;font-weight:700;letter-spacing:.06em}
.brand-sub{color:var(--celadon);font-size:12px;letter-spacing:.34em;font-weight:500;margin-top:3px}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  scroll-snap-type:x proximity;padding:6px 2px;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:999px;
  font-size:14px;line-height:1.4;color:rgba(247,245,242,.76);
  background:transparent;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.chip:hover{background:var(--obsidian-2);color:#fff;border-color:rgba(47,191,158,.4)}
.chip-active{background:var(--celadon);color:var(--obsidian);font-weight:600;border-color:var(--celadon)}
.chip-active:hover{background:#29ad8f;color:var(--obsidian);border-color:#29ad8f}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  border:1px solid transparent;min-height:44px;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 6px 18px rgba(255,106,61,.28)}
.btn-primary:hover{background:#f2571f;transform:translateY(-1px);box-shadow:0 10px 26px rgba(255,106,61,.34)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:#F7F5F2;border-color:rgba(247,245,242,.42)}
.btn-ghost:hover{border-color:var(--celadon);color:var(--celadon)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--celadon);color:var(--celadon);transform:translateY(-1px);box-shadow:var(--shadow-soft)}
.btn-text{background:none;border:none;color:var(--celadon);font-weight:600;padding:8px 0;min-height:auto}
.btn-text span{border-bottom:1px solid currentColor;padding-bottom:2px}
.btn-text:hover span{border-bottom-color:transparent}
.header-cta{flex:0 0 auto}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb-inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:16px 0;font-size:14px;line-height:1.7;color:var(--ink-2)}
.crumb-inner a{color:var(--ink-2);transition:color .18s var(--ease)}
.crumb-inner a:hover{color:var(--celadon)}
.crumb-sep{color:#C9C2BA}
.crumb-current{color:var(--ink);font-weight:600;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumb-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:13px;
  background:var(--celadon-dim);color:#1E8A72;font-weight:600;
}

/* ============ 文章主体 ============ */
.article-shell{padding:56px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:56px;align-items:start}
.article-main{min-width:0}
.article-cover{
  margin:0 0 32px;border-radius:var(--radius-img);overflow:hidden;
  box-shadow:var(--shadow-soft);background:var(--obsidian);
  aspect-ratio:16/9;
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-head{margin-bottom:28px}
.article-head h1{
  font-size:42px;line-height:1.28;font-weight:800;letter-spacing:-.01em;
  margin:0 0 18px;color:var(--ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:14px;color:var(--ink-2);
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.article-meta i{color:var(--celadon);margin-right:6px}
.article-meta .meta-cat{
  padding:4px 12px;border-radius:999px;background:var(--obsidian);color:#F7F5F2;font-size:13px;
}

/* 正文排版 */
.article-body{
  background:transparent;font-size:17px;line-height:1.95;color:var(--ink);
  max-width:100%;
}
.article-body > * + *{margin-top:20px}
.article-body p{margin:0;color:#2A2530}
.article-body h2{
  font-size:28px;line-height:1.4;font-weight:700;color:var(--ink);
  margin:52px 0 18px;padding-left:16px;border-left:4px solid var(--celadon);
}
.article-body h3{font-size:21px;line-height:1.5;font-weight:700;margin:36px 0 14px;color:var(--ink)}
.article-body h4{font-size:18px;line-height:1.6;font-weight:700;margin:28px 0 12px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0;padding-left:24px}
.article-body li{margin:10px 0;color:#2A2530}
.article-body li::marker{color:var(--celadon)}
.article-body a{color:#1E8A72;border-bottom:1px solid rgba(47,191,158,.45);transition:color .18s var(--ease),border-color .18s var(--ease)}
.article-body a:hover{color:var(--coral);border-color:var(--coral)}
.article-body img{border-radius:var(--radius-img);box-shadow:var(--shadow-soft);margin:26px 0}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;border-left:4px solid var(--celadon);
  background:#fff;border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--ink-2);box-shadow:var(--shadow-soft);
}
.article-body blockquote p{margin:0;color:var(--ink-2)}
.article-body pre{
  background:#F1EEE9;border-left:3px solid var(--celadon);
  border-radius:10px;padding:18px 20px;overflow-x:auto;
  font-size:14px;line-height:1.75;color:#3A3344;
}
.article-body code{
  background:#F1EEE9;border-radius:6px;padding:2px 6px;
  font-size:14px;color:#B3441C;
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;background:#fff;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-soft)}
.article-body th{background:var(--obsidian);color:#F7F5F2;font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--line);margin:40px 0}

/* 标签 */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
  transition:all .2s var(--ease);
}
.tag:hover{border-color:var(--celadon);color:#1E8A72;background:var(--celadon-dim);transform:translateY(-2px)}

/* 侧栏目录 */
.article-side{position:sticky;top:104px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-soft);
}
.side-card + .side-card{margin-top:20px}
.side-card h4{
  margin:0 0 14px;font-size:14px;font-weight:700;letter-spacing:.08em;
  color:var(--ink-2);text-transform:uppercase;
}
.toc-list{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:7px 0 7px 14px;margin-left:-2px;font-size:14px;line-height:1.6;
  color:var(--ink-2);border-left:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.toc-list a:hover,.toc-list a.is-active{color:#1E8A72;border-left-color:var(--celadon);font-weight:600}
.side-links{list-style:none;margin:0;padding:0}
.side-links li + li{margin-top:10px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;color:var(--ink-2);padding:8px 0;
  border-bottom:1px dashed var(--line);transition:color .18s var(--ease);
}
.side-links li:last-child a{border-bottom:none}
.side-links a:hover{color:var(--celadon)}
.side-links i{color:var(--celadon)}

/* ============ 空状态 ============ */
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:64px 32px;text-align:center;box-shadow:var(--shadow-soft);
}
.empty-state i{font-size:34px;color:var(--celadon);margin-bottom:16px;display:block}
.empty-state h2{font-size:24px;margin:0 0 12px;font-weight:700;padding:0;border:none}
.empty-state p{margin:0 auto 24px;max-width:46ch;color:var(--ink-2);font-size:16px}

/* ============ 相关推荐 ============ */
.related{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:80px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--celadon);
  margin-bottom:12px;
}
.section-head h2{font-size:32px;line-height:1.35;font-weight:800;margin:0 0 14px}
.section-head p{margin:0;color:var(--ink-2);font-size:16px;line-height:1.85}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:rgba(47,191,158,.5)}
.post-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--obsidian)}
.post-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover figure img{transform:scale(1.05)}
.post-card .card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.post-card h3{
  font-size:19px;line-height:1.5;font-weight:700;margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s var(--ease);
}
.post-card:hover h3{color:#1E8A72}
.post-card p{
  margin:0 0 18px;font-size:15px;line-height:1.8;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1;
}
.post-card .card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2);
}
.post-card .card-foot .more{color:var(--celadon);font-weight:600}

/* ============ 结尾 CTA ============ */
.end-cta{padding:88px 0}
.end-cta-box{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--obsidian) 0%,#2A2140 100%);
  border-radius:22px;padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  box-shadow:var(--shadow-lift);
}
.end-cta-box::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border-radius:50%;background:radial-gradient(circle,rgba(47,191,158,.34),transparent 68%);
}
.end-cta-box h2{color:#fff;font-size:30px;line-height:1.4;margin:0 0 12px;font-weight:800;position:relative;z-index:2}
.end-cta-box p{color:rgba(247,245,242,.82);margin:0;font-size:16px;line-height:1.85;max-width:56ch;position:relative;z-index:2}
.end-cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{background:var(--obsidian);color:rgba(247,245,242,.78);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-main{font-size:20px;letter-spacing:.06em;color:#fff}
.footer-brand .brand-sub{font-size:12px;letter-spacing:.34em;color:var(--celadon)}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.85;color:rgba(247,245,242,.66);max-width:36ch}
.footer-col h4{margin:0 0 16px;font-size:15px;color:#fff;font-weight:700;letter-spacing:.04em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:0 0 10px}
.footer-col a{font-size:14px;color:rgba(247,245,242,.68);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--celadon)}
.footer-note{font-size:14px;color:rgba(247,245,242,.6);line-height:1.8}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(232,228,222,.16);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(247,245,242,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container-x{padding:0 24px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .article-side{display:none}
  .article-head h1{font-size:34px}
  .article-body h2{font-size:24px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .header-inner{flex-wrap:wrap;padding:12px 0;gap:14px}
  .nav-chips{order:3;width:100%;flex:1 0 100%}
  .brand{order:1}
  .header-cta{order:2;margin-left:auto}
}
@media (max-width:768px){
  body{font-size:16px}
  .article-shell{padding:40px 0 64px}
  .article-head h1{font-size:30px}
  .article-body{font-size:16px;line-height:1.9}
  .related,.end-cta{padding:56px 0}
  .end-cta-box{padding:40px 26px}
  .end-cta-box h2{font-size:24px}
  .section-head h2{font-size:25px}
  .empty-state{padding:48px 22px}
}
@media (max-width:520px){
  .container-x{padding:0 16px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .brand-main{font-size:18px}
  .article-head h1{font-size:27px}
  .crumb-current{max-width:100%;white-space:normal}
  .end-cta-actions{width:100%}
  .end-cta-actions .btn{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
    --ink:#1B1526;
    --ink-soft:#2A2140;
    --jade:#2FBF9E;
    --coral:#FF6A3D;
    --paper:#F7F5F2;
    --card:#FFFFFF;
    --text:#1F1B24;
    --muted:#5C5566;
    --line:#E8E4DE;
    --radius-card:16px;
    --radius-btn:12px;
    --radius-img:12px;
    --shadow-sm:0 6px 24px rgba(27,21,38,.08);
    --shadow-lg:0 12px 32px rgba(27,21,38,.14);
    --section-y:88px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
    background:var(--paper);
    color:var(--text);
    font-size:17px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
  p{margin:0 0 18px}
  p:last-child{margin-bottom:0}
  button{font:inherit;cursor:pointer}

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

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(27,21,38,.94);
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    padding:14px 0;
  }
  .brand{
    display:flex;
    flex-direction:column;
    flex-shrink:0;
    line-height:1.15;
    color:#fff;
  }
  .brand-main{
    font-size:19px;
    font-weight:700;
    letter-spacing:-.02em;
  }
  .brand-sub{
    font-size:11px;
    letter-spacing:.22em;
    color:var(--jade);
    margin-top:3px;
  }
  .nav-chips{
    display:flex;
    align-items:center;
    gap:6px;
    flex:1;
    overflow-x:auto;
    scroll-snap-type:x proximity;
    scrollbar-width:none;
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{
    flex-shrink:0;
    scroll-snap-align:start;
    padding:9px 16px;
    border-radius:999px;
    font-size:14px;
    color:rgba(255,255,255,.72);
    background:transparent;
    border:1px solid transparent;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
    white-space:nowrap;
  }
  .chip:hover{background:rgba(255,255,255,.09);color:#fff}
  .chip-active{
    background:var(--jade);
    color:var(--ink);
    font-weight:600;
    border-color:var(--jade);
  }
  .chip-active:hover{background:var(--jade);color:var(--ink)}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:12px 24px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    transition:transform .18s ease-out,background .18s ease-out,box-shadow .18s ease-out,color .18s ease-out,border-color .18s ease-out;
    min-height:44px;
  }
  .btn-primary{
    background:var(--coral);
    color:#fff;
    box-shadow:0 6px 18px rgba(255,106,61,.28);
  }
  .btn-primary:hover{background:#F05A2C;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,61,.34)}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{
    background:transparent;
    color:#fff;
    border-color:rgba(255,255,255,.38);
  }
  .btn-ghost:hover{border-color:var(--jade);color:var(--jade)}
  .btn-ghost:active{transform:scale(.98)}
  .btn-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--jade);
    font-weight:600;
    font-size:15px;
    text-underline-offset:4px;
    transition:color .18s ease-out;
  }
  .btn-link:hover{color:#22a184;text-decoration:underline}
  .header-cta{flex-shrink:0}
  :focus-visible{outline:2px solid var(--jade);outline-offset:2px;border-radius:6px}

  /* ---------- breadcrumb ---------- */
  .breadcrumb{
    padding:20px 0 0;
    font-size:13.5px;
    color:var(--muted);
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
  }
  .breadcrumb a{color:var(--muted)}
  .breadcrumb a:hover{color:var(--jade)}
  .breadcrumb span.sep{opacity:.5}

  /* ---------- hero ---------- */
  .cat-hero{
    position:relative;
    margin-top:18px;
    border-radius:20px;
    overflow:hidden;
    min-height:480px;
    display:flex;
    align-items:center;
    background-color:var(--ink);
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
  }
  .cat-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(115deg,rgba(27,21,38,.94) 0%,rgba(27,21,38,.78) 46%,rgba(47,191,158,.22) 100%);
  }
  .cat-hero-inner{
    position:relative;
    z-index:2;
    padding:64px 56px;
    max-width:720px;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 14px;
    border-radius:999px;
    background:rgba(47,191,158,.16);
    border:1px solid rgba(47,191,158,.45);
    color:#7FE3CC;
    font-size:13px;
    letter-spacing:.06em;
  }
  .cat-hero h1{
    margin-top:20px;
    font-size:46px;
    line-height:1.24;
    color:#fff;
    letter-spacing:-.02em;
  }
  .cat-hero p.lead{
    margin-top:18px;
    font-size:17px;
    line-height:1.85;
    color:rgba(255,255,255,.78);
    max-width:600px;
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:30px;
  }
  .hero-chips{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:32px;
    padding-top:26px;
    border-top:1px solid rgba(255,255,255,.14);
  }
  .stat-chip{
    display:flex;
    flex-direction:column;
    gap:2px;
    padding:10px 18px;
    border-radius:12px;
    background:rgba(255,255,255,.07);
    border:1px solid rgba(255,255,255,.12);
  }
  .stat-chip b{color:#fff;font-size:15px;font-weight:600}
  .stat-chip span{color:rgba(255,255,255,.62);font-size:12.5px}

  /* ---------- sections ---------- */
  .section{padding:var(--section-y) 0}
  .section-tight{padding:64px 0}
  .section-head{max-width:760px;margin-bottom:44px}
  .section-head h2{
    font-size:32px;
    line-height:1.3;
  }
  .section-head p{
    margin-top:14px;
    color:var(--muted);
    font-size:16px;
    line-height:1.85;
  }
  .kicker{
    display:inline-block;
    font-size:13px;
    letter-spacing:.16em;
    color:var(--jade);
    font-weight:600;
    margin-bottom:12px;
    text-transform:uppercase;
  }

  /* ---------- alternating rows ---------- */
  .row-split{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
    align-items:center;
  }
  .row-split + .row-split{margin-top:80px}
  .row-split.reverse .row-media{order:-1}
  .row-media{
    border-radius:var(--radius-img);
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    background:#fff;
    aspect-ratio:4/3;
  }
  .row-media img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .35s ease-out;
  }
  .row-media:hover img{transform:scale(1.03)}
  .row-body h3{
    font-size:24px;
    line-height:1.35;
    margin-bottom:14px;
  }
  .row-body p{color:var(--muted);font-size:16.5px}
  .tick-list{margin-top:22px;display:grid;gap:12px}
  .tick-list li{
    display:flex;
    gap:12px;
    align-items:flex-start;
    font-size:15.5px;
    color:var(--text);
    line-height:1.75;
  }
  .tick-list li::before{
    content:"";
    flex-shrink:0;
    width:8px;
    height:8px;
    margin-top:10px;
    border-radius:2px;
    background:var(--jade);
    transform:rotate(45deg);
  }
  .row-num{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    border-radius:12px;
    background:var(--ink);
    color:var(--jade);
    font-size:15px;
    font-weight:700;
    letter-spacing:.04em;
    margin-bottom:18px;
  }

  /* ---------- checklist / cards ---------- */
  .card-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
  }
  .safety-card{
    background:var(--card);
    border:1px solid var(--line);
    border-left:4px solid var(--jade);
    border-radius:var(--radius-card);
    padding:26px 24px;
    box-shadow:var(--shadow-sm);
    transition:transform .2s ease-out,box-shadow .2s ease-out;
  }
  .safety-card.alt{border-left-color:var(--coral)}
  .safety-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
  .safety-card h4{
    font-size:18px;
    margin-bottom:10px;
  }
  .safety-card p{
    font-size:14.5px;
    color:var(--muted);
    line-height:1.8;
  }
  .tag{
    display:inline-block;
    padding:4px 12px;
    border-radius:999px;
    font-size:12.5px;
    font-weight:600;
    background:rgba(47,191,158,.14);
    color:#1E8E76;
    margin-bottom:14px;
  }
  .tag-coral{
    background:rgba(255,106,61,.14);
    color:#D0481F;
  }

  .metric-strip{
    margin-top:40px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
    background:var(--ink);
    border-radius:var(--radius-card);
    padding:32px;
  }
  .metric-item{border-left:2px solid rgba(47,191,158,.5);padding-left:20px}
  .metric-item b{
    display:block;
    color:#fff;
    font-size:28px;
    letter-spacing:-.02em;
    line-height:1.2;
  }
  .metric-item span{
    display:block;
    margin-top:8px;
    font-size:13.5px;
    color:rgba(255,255,255,.6);
    line-height:1.7;
  }

  /* ---------- steps ---------- */
  .steps{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
  }
  .step-card{
    position:relative;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:28px 24px 26px;
    transition:transform .2s ease-out,box-shadow .2s ease-out;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
  .step-card .step-no{
    font-size:30px;
    font-weight:700;
    color:var(--jade);
    letter-spacing:-.03em;
    line-height:1;
  }
  .step-card h3{
    margin-top:16px;
    font-size:19px;
  }
  .step-card p{
    margin-top:10px;
    font-size:14.5px;
    color:var(--muted);
    line-height:1.8;
  }
  .step-card::after{
    content:"";
    position:absolute;
    top:44px;
    right:-24px;
    width:24px;
    border-top:1px dashed var(--line);
  }
  .step-card:last-child::after{display:none}

  /* ---------- updates ---------- */
  .updates{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:36px 40px;
    box-shadow:var(--shadow-sm);
  }
  .update-item{
    display:flex;
    gap:20px;
    padding:20px 0;
    border-bottom:1px solid var(--line);
  }
  .update-item:first-child{padding-top:0}
  .update-item:last-child{border-bottom:none;padding-bottom:0}
  .update-date{
    flex-shrink:0;
    width:96px;
    font-size:13.5px;
    color:var(--muted);
    padding-top:3px;
  }
  .update-item h4{font-size:17px;margin-bottom:6px}
  .update-item p{font-size:14.5px;color:var(--muted);line-height:1.8}

  /* ---------- faq ---------- */
  .faq-wrap{max-width:860px;margin:0 auto}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:first-child{border-top:1px solid var(--line)}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:22px 0;
    background:none;
    border:none;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--text);
    transition:color .2s ease-out;
  }
  .faq-q:hover{color:var(--jade)}
  .faq-icon{
    flex-shrink:0;
    width:26px;
    height:26px;
    border-radius:999px;
    border:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    color:var(--muted);
    transition:transform .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  .faq-item.open .faq-icon{
    transform:rotate(45deg);
    background:var(--jade);
    border-color:var(--jade);
    color:#fff;
  }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .2s ease-out;
  }
  .faq-a p{
    padding-bottom:22px;
    font-size:15px;
    color:var(--muted);
    line-height:1.85;
  }

  /* ---------- cta band ---------- */
  .cta-band{
    position:relative;
    border-radius:20px;
    overflow:hidden;
    background-color:var(--ink);
    background-image:url('/assets/images/backpic/back-3.png');
    background-size:cover;
    background-position:center;
  }
  .cta-band::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(100deg,rgba(27,21,38,.95),rgba(27,21,38,.72));
  }
  .cta-inner{
    position:relative;
    z-index:2;
    padding:56px 56px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:40px;
    flex-wrap:wrap;
  }
  .cta-inner h2{color:#fff;font-size:30px;line-height:1.32}
  .cta-inner p{margin-top:12px;color:rgba(255,255,255,.72);font-size:16px;max-width:560px}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--ink);
    color:rgba(255,255,255,.72);
    padding:64px 0 28px;
    margin-top:var(--section-y);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:44px;
    padding-bottom:44px;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .footer-brand .brand-main{font-size:20px;color:#fff}
  .footer-brand .brand-sub{margin-top:4px}
  .footer-brand p{
    margin-top:18px;
    font-size:14px;
    line-height:1.85;
    color:rgba(255,255,255,.6);
    max-width:320px;
  }
  .footer-col h4{
    font-size:15px;
    color:#fff;
    margin-bottom:18px;
  }
  .footer-col ul{display:grid;gap:12px}
  .footer-col a{
    font-size:14px;
    color:rgba(255,255,255,.66);
    transition:color .18s ease-out;
  }
  .footer-col a:hover{color:var(--jade)}
  .footer-note{font-size:14px;color:rgba(255,255,255,.5)}
  .footer-bottom{
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:12px;
    padding-top:24px;
    font-size:13px;
    color:rgba(255,255,255,.45);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    :root{--section-y:72px}
    .container-x{padding:0 24px}
    .cat-hero h1{font-size:38px}
    .cat-hero-inner{padding:52px 40px}
    .card-grid{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr)}
    .step-card::after{display:none}
    .row-split{gap:40px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  }
  @media (max-width:768px){
    :root{--section-y:60px}
    body{font-size:16px}
    .header-inner{flex-wrap:wrap;gap:14px}
    .nav-chips{order:3;width:100%;flex:1 0 100%}
    .header-cta{padding:10px 18px;font-size:14px}
    .cat-hero{min-height:440px;margin-top:12px}
    .cat-hero h1{font-size:32px}
    .cat-hero-inner{padding:44px 26px}
    .section-head h2{font-size:26px}
    .row-split{grid-template-columns:1fr;gap:28px}
    .row-split.reverse .row-media{order:0}
    .row-split + .row-split{margin-top:56px}
    .row-body h3{font-size:21px}
    .metric-strip{grid-template-columns:1fr;gap:24px;padding:26px}
    .cta-inner{padding:40px 26px}
    .cta-inner h2{font-size:25px}
    .updates{padding:26px 22px}
    .update-item{flex-direction:column;gap:6px}
    .update-date{width:auto}
  }
  @media (max-width:560px){
    .container-x{padding:0 16px}
    body{font-size:15.5px}
    .cat-hero h1{font-size:28px;line-height:1.3}
    .cat-hero p.lead{font-size:15.5px}
    .hero-actions .btn{width:100%}
    .card-grid{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .footer-bottom{flex-direction:column}
    .section-head{margin-bottom:32px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
  }

/* roulang page: category2 */
:root{
    --ink:#1B1526;
    --ink-2:#2A2140;
    --jade:#2FBF9E;
    --coral:#FF6A3D;
    --paper:#F7F5F2;
    --white:#ffffff;
    --text:#1F1B24;
    --text-2:#5C5566;
    --line:#E8E4DE;
    --r-card:16px;
    --r-btn:12px;
    --r-img:12px;
    --sh:0 6px 24px rgba(27,21,38,.08);
    --sh-h:0 12px 32px rgba(27,21,38,.14);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
    background:var(--paper);
    color:var(--text);
    font-size:16.5px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; }
  h1,h2,h3,h4{ margin:0; font-weight:700; letter-spacing:-.01em; }
  p{ margin:0; }
  ul{ margin:0; padding:0; }
  ::selection{ background:rgba(47,191,158,.28); }
  ::-webkit-scrollbar{ width:10px; height:10px; }
  ::-webkit-scrollbar-thumb{ background:rgba(27,21,38,.26); border-radius:999px; }
  ::-webkit-scrollbar-track{ background:transparent; }

  .container-x{ width:100%; max-width:1200px; margin:0 auto; padding:0 16px; }
  @media (min-width:768px){ .container-x{ padding:0 24px; } }
  @media (min-width:1024px){ .container-x{ padding:0 32px; } }

  /* ---------- Header ---------- */
  .site-header{
    position:sticky; top:0; z-index:60;
    background:rgba(27,21,38,.92);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .header-inner{
    display:flex; align-items:center; gap:14px;
    flex-wrap:wrap; padding:9px 0; min-height:62px;
  }
  .brand{ display:flex; flex-direction:column; line-height:1.12; letter-spacing:-.02em; flex:0 0 auto; }
  .brand-main{ color:#fff; font-size:19px; font-weight:800; }
  .brand-sub{ color:var(--jade); font-size:12.5px; font-weight:600; letter-spacing:.16em; }
  .nav-chips{
    order:3; width:100%;
    display:flex; align-items:center; gap:6px;
    overflow-x:auto; scroll-snap-type:x proximity;
    -ms-overflow-style:none; scrollbar-width:none;
    padding:4px 0 6px;
  }
  .nav-chips::-webkit-scrollbar{ display:none; }
  .chip{
    white-space:nowrap; scroll-snap-align:start;
    padding:9px 14px; border-radius:999px;
    font-size:14px; color:rgba(255,255,255,.72);
    border:1px solid transparent;
    transition:background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  }
  .chip:hover{ background:rgba(255,255,255,.09); color:#fff; }
  .chip:focus-visible{ outline:2px solid var(--jade); outline-offset:2px; }
  .chip-active{ background:var(--jade); color:#10231e; font-weight:700; }
  .chip-active:hover{ background:var(--jade); color:#10231e; }
  .header-cta{ margin-left:auto; flex:0 0 auto; }
  @media (min-width:1024px){
    .header-inner{ flex-wrap:nowrap; min-height:72px; padding:0; gap:18px; }
    .nav-chips{ order:0; width:auto; flex:1 1 auto; justify-content:center; padding:6px 2px; }
    .header-cta{ margin-left:0; }
    .brand-main{ font-size:20px; }
    .brand-sub{ font-size:13px; }
  }

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    min-height:44px; padding:0 20px;
    border-radius:var(--r-btn); border:1px solid transparent;
    font-size:15px; font-weight:600; cursor:pointer;
    transition:transform .18s var(--ease), background-color .18s var(--ease),
               box-shadow .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
  }
  .btn:active{ transform:scale(.98); }
  .btn:focus-visible{ outline:2px solid var(--jade); outline-offset:2px; }
  .btn-primary{ background:var(--coral); color:#fff; box-shadow:0 8px 20px rgba(255,106,61,.28); }
  .btn-primary:hover{ background:#f2571f; transform:translateY(-1px); box-shadow:0 12px 26px rgba(255,106,61,.32); }
  .btn-ghost{ background:transparent; color:#fff; border-color:rgba(255,255,255,.45); }
  .btn-ghost:hover{ border-color:var(--jade); color:var(--jade); }
  .btn-dark{ background:var(--ink); color:#fff; }
  .btn-dark:hover{ background:var(--ink-2); transform:translateY(-1px); }
  .btn-link{ display:inline-flex; align-items:center; gap:6px; color:var(--jade); font-weight:600; font-size:14.5px; }
  .btn-link:hover{ color:#1f9a7f; text-decoration:underline; text-underline-offset:4px; }

  /* ---------- Hero ---------- */
  .hero{
    position:relative; overflow:hidden; color:#fff;
    background-color:var(--ink);
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover; background-position:center;
    min-height:440px; display:flex; align-items:center;
    padding:64px 0 56px;
  }
  .hero::before{
    content:""; position:absolute; inset:0;
    background:linear-gradient(120deg, rgba(27,21,38,.95) 0%, rgba(27,21,38,.84) 46%, rgba(42,33,64,.6) 100%);
  }
  .hero-inner{ position:relative; max-width:780px; }
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    padding:5px 13px; border-radius:999px;
    font-size:13px; font-weight:600; color:var(--jade);
    background:rgba(47,191,158,.16);
    border:1px solid rgba(47,191,158,.36);
  }
  .hero h1{
    margin-top:18px;
    font-size:clamp(30px,4.4vw,46px);
    line-height:1.25; font-weight:800; letter-spacing:-.01em;
  }
  .hero-sub{
    margin-top:16px; max-width:660px;
    font-size:17px; line-height:1.85; color:rgba(255,255,255,.82);
  }
  .hero-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
  .hero-stats{
    display:flex; flex-wrap:wrap; gap:12px 40px;
    margin-top:32px; padding-top:24px;
    border-top:1px solid rgba(255,255,255,.14);
  }
  .stat-num{ color:#fff; font-size:23px; font-weight:800; line-height:1.2; }
  .stat-label{ color:rgba(255,255,255,.62); font-size:13px; margin-top:2px; }

  /* ---------- Sections ---------- */
  .section{ padding:56px 0; }
  @media (min-width:1024px){ .section{ padding:88px 0; } }
  .section-alt{ background:#fff; }
  .crumb{ font-size:13.5px; color:var(--text-2); margin-bottom:18px; }
  .crumb a:hover{ color:var(--jade); }
  .crumb span{ color:#a49ea9; margin:0 6px; }
  .section-head{ max-width:760px; }
  .section-head h2{ font-size:clamp(24px,3vw,32px); line-height:1.32; }
  .section-head p{ margin-top:14px; font-size:16.5px; color:var(--text-2); line-height:1.9; }
  .kicker{
    display:inline-block; font-size:13px; font-weight:700;
    letter-spacing:.14em; color:var(--jade); margin-bottom:12px;
  }

  /* ---------- Filter / Metrics ---------- */
  .filter-bar{ display:flex; flex-wrap:wrap; gap:10px; margin-top:28px; }
  .filter-chip{
    padding:9px 17px; border-radius:999px;
    background:#fff; border:1px solid var(--line);
    color:var(--text-2); font-size:14px; cursor:pointer;
    transition:all .18s var(--ease);
  }
  .filter-chip:hover{ border-color:var(--jade); color:var(--text); }
  .filter-chip:focus-visible{ outline:2px solid var(--jade); outline-offset:2px; }
  .filter-chip.is-active{ background:var(--ink); border-color:var(--ink); color:#fff; font-weight:600; }

  .metric-grid{ display:grid; gap:18px; margin-top:32px; grid-template-columns:1fr; }
  @media (min-width:640px){ .metric-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  @media (min-width:1024px){ .metric-grid{ grid-template-columns:repeat(4,minmax(0,1fr)); } }
  .metric-card{
    background:#fff; border:1px solid var(--line);
    border-radius:var(--r-card); padding:20px 22px;
    box-shadow:var(--sh);
  }
  .metric-k{ font-size:13px; color:var(--text-2); }
  .metric-v{ font-size:20px; font-weight:800; margin-top:6px; line-height:1.4; }
  .metric-note{ font-size:13px; color:#8d8794; margin-top:4px; }

  /* ---------- Category layout ---------- */
  .category-layout{ display:grid; grid-template-columns:1fr; gap:32px; margin-top:36px; }
  @media (min-width:1024px){
    .category-layout{ grid-template-columns:minmax(0,1fr) 292px; gap:36px; align-items:start; }
    .sidebar{ position:sticky; top:96px; }
  }

  .task-grid{ display:grid; gap:24px; grid-template-columns:1fr; }
  @media (min-width:640px){ .task-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }

  .task-card{
    display:flex; flex-direction:column;
    background:#fff; border:1px solid var(--line);
    border-left:4px solid var(--jade);
    border-radius:var(--r-card); overflow:hidden;
    box-shadow:var(--sh);
    transition:transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .task-card[data-rarity="high"]{ border-left-color:var(--coral); }
  .task-card:hover{ transform:translateY(-2px); box-shadow:var(--sh-h); }
  .task-media{ aspect-ratio:16/9; overflow:hidden; background:var(--ink-2); }
  .task-media img{ width:100%; height:100%; object-fit:cover; transition:transform .3s var(--ease); }
  .task-card:hover .task-media img{ transform:scale(1.03); }
  .task-body{ display:flex; flex-direction:column; gap:10px; padding:20px; flex:1; }
  .task-flags{ display:flex; flex-wrap:wrap; gap:8px; }
  .tag{
    display:inline-flex; align-items:center; gap:6px;
    padding:4px 11px; border-radius:999px;
    font-size:12.5px; font-weight:600;
    background:rgba(47,191,158,.13); color:#1f7a65;
  }
  .tag-warn{ background:rgba(255,106,61,.13); color:#bf4018; }
  .task-title{ font-size:19px; line-height:1.45; }
  .task-desc{ font-size:15px; color:var(--text-2); line-height:1.85; }
  .task-foot{
    margin-top:auto; padding-top:14px;
    border-top:1px dashed var(--line);
    display:flex; align-items:center; justify-content:space-between; gap:12px;
  }
  .status{ font-size:13px; color:var(--text-2); }
  .status b{ color:var(--coral); }

  /* ---------- Sidebar ---------- */
  .sidebar{ display:flex; flex-direction:column; gap:22px; }
  .side-card{
    background:#fff; border:1px solid var(--line);
    border-radius:var(--r-card); padding:20px 22px;
    box-shadow:var(--sh);
  }
  .side-card h3{ font-size:16px; margin-bottom:6px; }
  .side-card .side-note{ font-size:13.5px; color:var(--text-2); line-height:1.8; margin-bottom:14px; }
  .tag-cloud{ display:flex; flex-wrap:wrap; gap:8px; }
  .tag-cloud a{
    font-size:13px; padding:6px 11px; border-radius:999px;
    background:var(--paper); border:1px solid var(--line);
    color:var(--text-2); transition:all .18s var(--ease);
  }
  .tag-cloud a:hover{ border-color:var(--jade); color:var(--ink); background:#fff; }
  .side-list{ list-style:none; display:flex; flex-direction:column; gap:12px; }
  .side-list li{ font-size:14px; color:var(--text-2); line-height:1.75; padding-left:16px; position:relative; }
  .side-list li::before{
    content:""; position:absolute; left:0; top:11px;
    width:6px; height:6px; border-radius:50%; background:var(--jade);
  }

  /* ---------- Tier cards ---------- */
  .tier-grid{ display:grid; gap:24px; margin-top:36px; grid-template-columns:1fr; }
  @media (min-width:768px){ .tier-grid{ grid-template-columns:repeat(3,minmax(0,1fr)); } }
  .tier-card{
    display:flex; flex-direction:column;
    background:#fff; border:1px solid var(--line);
    border-radius:var(--r-card); padding:26px;
    box-shadow:var(--sh);
    transition:transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .tier-card:hover{ transform:translateY(-2px); box-shadow:var(--sh-h); }
  .tier-card.featured{ background:var(--ink); border-color:var(--ink); color:#fff; }
  .tier-name{ font-size:13px; font-weight:700; letter-spacing:.14em; color:var(--jade); }
  .tier-title{ font-size:22px; margin:10px 0 6px; }
  .tier-desc{ font-size:14.5px; color:var(--text-2); line-height:1.8; }
  .tier-card.featured .tier-desc{ color:rgba(255,255,255,.72); }
  .tier-list{ list-style:none; margin-top:18px; padding-top:18px; border-top:1px solid var(--line); display:flex; flex-direction:column; gap:12px; }
  .tier-card.featured .tier-list{ border-top-color:rgba(255,255,255,.16); }
  .tier-list li{ position:relative; padding-left:18px; font-size:14.5px; color:var(--text-2); line-height:1.75; }
  .tier-list li::before{
    content:""; position:absolute; left:0; top:10px;
    width:7px; height:7px; border-radius:50%; background:var(--jade);
  }
  .tier-card.featured .tier-list li{ color:rgba(255,255,255,.78); }

  /* ---------- Checklist ---------- */
  .check-grid{ display:grid; gap:18px; margin-top:34px; grid-template-columns:1fr; }
  @media (min-width:768px){ .check-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  .check-item{
    display:flex; gap:16px;
    background:#fff; border:1px solid var(--line);
    border-radius:var(--r-card); padding:20px 22px;
    box-shadow:var(--sh);
  }
  .check-num{ font-size:21px; font-weight:800; color:var(--jade); line-height:1.1; min-width:38px; }
  .check-title{ font-size:17px; margin-bottom:6px; }
  .check-text{ font-size:14.8px; color:var(--text-2); line-height:1.85; }

  /* ---------- FAQ ---------- */
  .faq-wrap{
    margin-top:34px; background:#fff;
    border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--sh); overflow:hidden;
  }
  .faq-item + .faq-item{ border-top:1px solid var(--line); }
  .faq-q{
    width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
    padding:20px 24px; background:transparent; border:0;
    text-align:left; cursor:pointer;
    font-size:17px; font-weight:600; color:var(--text);
    transition:color .18s var(--ease);
  }
  .faq-q:hover{ color:#1f8a72; }
  .faq-q:focus-visible{ outline:2px solid var(--jade); outline-offset:-2px; }
  .faq-icon{ position:relative; width:18px; height:18px; flex:0 0 auto; transition:transform .2s var(--ease); }
  .faq-icon::before,.faq-icon::after{
    content:""; position:absolute; background:var(--jade); border-radius:2px;
  }
  .faq-icon::before{ left:8px; top:0; width:2px; height:18px; }
  .faq-icon::after{ top:8px; left:0; width:18px; height:2px; }
  .faq-item.open .faq-icon{ transform:rotate(45deg); }
  .faq-a{ max-height:0; overflow:hidden; transition:max-height .2s ease-out; }
  .faq-a p{
    padding:0 24px 22px; max-width:840px;
    font-size:15px; line-height:1.85; color:var(--text-2);
  }

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative; overflow:hidden;
    background:var(--ink); border-radius:24px;
    padding:40px 26px; color:#fff;
    display:grid; gap:26px; align-items:center;
  }
  .cta-band::after{
    content:""; position:absolute; right:-120px; top:-120px;
    width:320px; height:320px; border-radius:50%;
    background:radial-gradient(circle, rgba(255,106,61,.34) 0%, rgba(255,106,61,0) 68%);
    pointer-events:none;
  }
  @media (min-width:900px){
    .cta-band{ grid-template-columns:1.5fr auto; padding:50px 48px; }
  }
  .cta-band h2{ font-size:clamp(22px,2.6vw,30px); line-height:1.36; }
  .cta-band p{ margin-top:12px; font-size:16px; line-height:1.85; color:rgba(255,255,255,.76); max-width:640px; }
  .cta-actions{ position:relative; display:flex; flex-wrap:wrap; gap:12px; }

  /* ---------- Footer ---------- */
  .site-footer{ background:var(--ink); color:rgba(255,255,255,.7); padding:60px 0 26px; }
  .footer-grid{ display:grid; gap:34px; grid-template-columns:1fr; }
  @media (min-width:640px){ .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  @media (min-width:1024px){ .footer-grid{ grid-template-columns:1.6fr 1fr 1fr 1fr; gap:32px; } }
  .footer-brand .brand-main{ display:block; color:#fff; font-size:20px; font-weight:800; letter-spacing:-.02em; }
  .footer-brand .brand-sub{ display:block; color:var(--jade); font-size:13px; font-weight:600; letter-spacing:.16em; margin-bottom:14px; }
  .footer-brand p{ font-size:14px; line-height:1.85; color:rgba(255,255,255,.6); max-width:340px; }
  .footer-col h4{ color:#fff; font-size:15px; margin-bottom:14px; }
  .footer-col ul{ list-style:none; display:flex; flex-direction:column; gap:10px; }
  .footer-col a{ font-size:14px; color:rgba(255,255,255,.66); transition:color .18s var(--ease); }
  .footer-col a:hover{ color:var(--jade); }
  .footer-note{ font-size:13.5px; line-height:1.7; color:rgba(255,255,255,.55); }
  .footer-bottom{
    margin-top:42px; padding-top:20px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex; flex-wrap:wrap; justify-content:space-between; gap:10px;
    font-size:13px; color:rgba(255,255,255,.5);
  }

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

/* roulang page: category3 */
:root{
  --ink:#1B1526;
  --ink-2:#2A2140;
  --jade:#2FBF9E;
  --jade-deep:#1E8C74;
  --coral:#FF6A3D;
  --coral-deep:#F2571F;
  --paper:#F7F5F2;
  --card:#FFFFFF;
  --text:#1F1B24;
  --muted:#5C5566;
  --line:#E8E4DE;
  --r-card:16px;
  --r-btn:12px;
  --r-img:12px;
  --shadow:0 6px 24px rgba(27,21,38,.08);
  --shadow-hover:0 12px 32px rgba(27,21,38,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(47,191,158,.28)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#CFC9C2;border-radius:999px;border:2px solid var(--paper)}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px;border-radius:6px}

/* ---------- 容器 ---------- */
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(27,21,38,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{display:flex;align-items:center;gap:26px;height:74px}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.1;letter-spacing:-.02em;flex:none}
.brand-main{font-size:20px;font-weight:700;color:#fff}
.brand-sub{font-size:13px;font-weight:500;color:var(--jade);letter-spacing:.16em;margin-top:2px}
.nav-chips{display:flex;align-items:center;gap:6px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 15px;border-radius:999px;
  font-size:14px;color:rgba(255,255,255,.72);white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out;
}
.chip:hover{background:var(--ink-2);color:#fff}
.chip-active{background:var(--jade);color:#0F1A17;font-weight:600}
.chip-active:hover{background:var(--jade);color:#0F1A17}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 6px 18px rgba(255,106,61,.28)}
.btn-primary:hover{background:var(--coral-deep);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,61,.32)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{border-color:var(--jade);color:var(--jade);transform:translateY(-1px)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost-light:hover{border-color:var(--jade);color:var(--jade)}
.header-cta{flex:none;min-height:42px;padding:0 20px;font-size:14.5px}

/* ---------- 通用板块 ---------- */
.section{padding:92px 0}
.section-alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:46px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.18em;
  color:var(--jade-deep);text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--jade);display:inline-block}
.eyebrow-light{color:var(--jade)}
.sec-title{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.34;letter-spacing:-.012em;margin:16px 0 12px}
.sec-desc{margin:0;color:var(--muted);font-size:16px;line-height:1.9;max-width:720px}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink);overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.55;z-index:0}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(135deg,rgba(27,21,38,.96) 0%,rgba(27,21,38,.74) 46%,rgba(42,33,64,.9) 100%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;z-index:3;
  background:linear-gradient(90deg,transparent,rgba(47,191,158,.75),transparent);
}
.hero-inner{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:center;min-height:520px;padding-top:78px;padding-bottom:66px}
.hero-title{color:#fff;font-size:clamp(30px,4.3vw,48px);line-height:1.25;font-weight:700;letter-spacing:-.018em;margin:18px 0 0;max-width:900px}
.hero-sub{color:rgba(255,255,255,.78);font-size:17px;line-height:1.9;margin:18px 0 0;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
.hero-stats li{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:10px 18px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
}
.hero-stats strong{color:#fff;font-size:15px;font-weight:700}
.hero-stats span{color:rgba(255,255,255,.62);font-size:13px}

/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.metric-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 24px 26px;box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.metric-label{font-size:13px;color:var(--muted);letter-spacing:.06em}
.metric-score{display:flex;align-items:baseline;gap:6px;margin:10px 0 14px}
.metric-score b{font-size:30px;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.metric-score i{font-style:normal;font-size:13px;color:var(--muted)}
.metric-bar{height:8px;border-radius:999px;background:var(--line);overflow:hidden}
.metric-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--jade),var(--coral))}
.metric-text{margin:14px 0 0;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow);border:1px solid var(--line)}
.split-caption{margin:14px 0 0;font-size:13.5px;color:var(--muted);line-height:1.75}
.prep-list{display:grid;gap:20px}
.prep-item{display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:start}
.prep-icon{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:rgba(47,191,158,.12);color:var(--jade-deep);
  font-size:14px;font-weight:700;margin-top:4px;
}
.prep-item h3{font-size:18px;font-weight:700;margin:0 0 4px;line-height:1.5}
.prep-item p{margin:0;font-size:15px;line-height:1.88;color:var(--muted)}

/* ---------- 时间轴 ---------- */
.timeline{margin-top:10px}
.tl-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:42px}
.tl-item:last-child{padding-bottom:0}
.tl-rail{position:relative}
.tl-dot{
  position:absolute;top:14px;left:50%;transform:translateX(-50%);
  width:14px;height:14px;border-radius:50%;background:var(--jade);
  box-shadow:0 0 0 6px rgba(47,191,158,.14);z-index:2;
}
.tl-item.is-current .tl-dot{background:var(--coral);box-shadow:0 0 0 6px rgba(255,106,61,.18);animation:pulse 2.2s ease-out infinite}
.tl-line{
  position:absolute;top:30px;left:50%;transform:translateX(-50%);
  bottom:-42px;width:2px;background:var(--line);
}
.tl-item:last-child .tl-line{display:none}
@keyframes pulse{
  0%{box-shadow:0 0 0 6px rgba(255,106,61,.18)}
  70%{box-shadow:0 0 0 14px rgba(255,106,61,0)}
  100%{box-shadow:0 0 0 6px rgba(255,106,61,0)}
}
.tl-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 26px 24px;box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.tl-item:hover .tl-body{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.tl-num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--jade-deep);background:rgba(47,191,158,.1);
  padding:3px 10px;border-radius:999px;
}
.tl-title{font-size:20px;font-weight:700;line-height:1.5;margin:12px 0 8px}
.tl-text{margin:0;font-size:15.5px;line-height:1.9;color:var(--muted)}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tl-tags li{
  font-size:13px;color:var(--jade-deep);background:rgba(47,191,158,.08);
  border:1px solid rgba(47,191,158,.24);border-radius:999px;padding:3px 10px;
}

/* ---------- CTA 深色带 ---------- */
.cta-band{position:relative;background:var(--ink);overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 300px at 84% 18%,rgba(255,106,61,.24),transparent 70%),
             radial-gradient(520px 260px at 8% 92%,rgba(47,191,158,.2),transparent 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr auto;gap:32px;align-items:center;padding-top:58px;padding-bottom:58px}
.cta-title{color:#fff;font-size:clamp(23px,2.8vw,30px);font-weight:700;line-height:1.4;margin:0 0 10px}
.cta-text{color:rgba(255,255,255,.72);margin:0;font-size:16px;line-height:1.85;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 要点 / 误区 ---------- */
.tips-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.tip-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 28px 30px;box-shadow:var(--shadow)}
.tip-panel-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.tip-panel h3{font-size:20px;font-weight:700;margin:0}
.tip-dot{width:10px;height:10px;border-radius:50%;background:var(--jade);flex:none}
.tip-dot-warn{background:var(--coral)}
.tip-note{margin:0 0 20px;font-size:14.5px;color:var(--muted);line-height:1.85}
.tip-list{display:grid;gap:15px}
.tip-list li{display:grid;grid-template-columns:24px 1fr;gap:12px;font-size:15.5px;line-height:1.85}
.tip-mark{
  width:24px;height:24px;border-radius:50%;display:grid;place-items:center;
  font-size:12px;font-weight:700;margin-top:5px;
}
.tip-mark-ok{background:rgba(47,191,158,.14);color:var(--jade-deep)}
.tip-mark-warn{background:rgba(255,106,61,.14);color:var(--coral-deep)}

/* ---------- 阶段对照 ---------- */
.compare{display:grid;gap:12px}
.compare-head{
  display:grid;grid-template-columns:1.1fr 1.4fr 1.6fr .75fr;gap:18px;
  padding:0 24px 4px;font-size:13px;color:var(--muted);letter-spacing:.08em;
}
.compare-row{
  display:grid;grid-template-columns:1.1fr 1.4fr 1.6fr .75fr;gap:18px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:18px 24px;box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.compare-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(47,191,158,.45)}
.compare-row strong{font-size:16px;font-weight:700}
.compare-row p{margin:0;font-size:15px;color:var(--muted);line-height:1.8}
.compare-time{font-size:14px;font-weight:600;color:var(--coral-deep);text-align:right}

/* ---------- 更新列表 ---------- */
.update-list{display:grid;gap:14px}
.update-item{
  display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;
  background:var(--card);border:1px solid var(--line);border-left:4px solid var(--jade);
  border-radius:12px;padding:18px 24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.update-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.update-item.is-hot{border-left-color:var(--coral)}
.update-item h3{font-size:17px;font-weight:700;margin:0 0 6px;line-height:1.55}
.update-item p{margin:0;font-size:15px;color:var(--muted);line-height:1.85}
.update-tag{
  font-size:13px;padding:4px 12px;border-radius:999px;white-space:nowrap;
  background:rgba(27,21,38,.06);color:var(--ink);font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  padding:22px 2px;font-size:17px;font-weight:600;line-height:1.7;
  color:var(--text);text-align:left;transition:color .18s ease-out;
}
.faq-q:hover{color:var(--jade-deep)}
.faq-icon{position:relative;width:18px;height:18px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--jade);border-radius:2px;
  transition:transform .2s ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg) scaleY(.2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-a p{margin:0 2px 24px;font-size:15px;line-height:1.88;color:var(--muted);max-width:800px}

/* ---------- 收尾 CTA 卡片 ---------- */
.final-card{
  display:grid;grid-template-columns:1.5fr auto;gap:32px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:36px 40px;box-shadow:var(--shadow);
}
.final-title{font-size:clamp(21px,2.5vw,26px);font-weight:700;line-height:1.45;margin:0 0 10px}
.final-text{margin:0;font-size:15.5px;color:var(--muted);line-height:1.9;max-width:680px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:66px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-main{display:block;color:#fff;font-size:20px;font-weight:700;letter-spacing:-.02em}
.footer-brand .brand-sub{display:block;color:var(--jade);font-size:13px;letter-spacing:.16em;margin-top:4px}
.footer-brand p{margin:16px 0 0;font-size:14.5px;line-height:1.88;color:rgba(255,255,255,.58);max-width:330px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68);transition:color .18s ease-out}
.footer-col a:hover{color:var(--jade)}
.footer-note{font-size:14px;color:rgba(255,255,255,.5);line-height:1.8}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container-x{padding:0 24px}
  .section{padding:76px 0}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:36px}
  .split-media{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr 1fr;gap:10px 18px;padding:18px 20px}
  .compare-time{text-align:left}
}
@media (max-width:900px){
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 0;gap:10px 14px}
  .brand{order:1}
  .header-cta{order:2;margin-left:auto;min-height:40px;padding:0 16px;font-size:14px}
  .nav-chips{order:3;width:100%;padding-bottom:4px;scroll-snap-type:x proximity}
  .chip{scroll-snap-align:start}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:62px 0}
  .sec-head{margin-bottom:34px}
  .hero-inner{min-height:460px;padding-top:56px;padding-bottom:52px}
  .hero-sub{font-size:16px}
  .hero-stats li{padding:8px 14px}
  .tips-grid{grid-template-columns:1fr;gap:20px}
  .cta-inner{grid-template-columns:1fr;gap:24px;padding-top:46px;padding-bottom:46px}
  .final-card{grid-template-columns:1fr;gap:22px;padding:28px 24px}
  .tl-item{grid-template-columns:38px 1fr;gap:14px;padding-bottom:32px}
  .tl-line{bottom:-32px}
  .tl-body{padding:20px 20px 22px}
  .update-item{grid-template-columns:1fr;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{margin-top:34px}
}
@media (max-width:520px){
  .container-x{padding:0 16px}
  .brand-main{font-size:18px}
  .brand-sub{font-size:12px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-stats{width:100%;gap:8px}
  .hero-stats li{flex:1 1 100%;justify-content:flex-start}
  .metric-grid{grid-template-columns:1fr}
  .compare-row{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
  .final-card .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn,.metric-card,.tl-body,.compare-row,.update-item,.faq-a,.chip{transition:none}
  .tl-item.is-current .tl-dot{animation:none}
}