/* roulang page: index */
:root{
  --ink:#14201F; --ink-2:#2A3A38; --ink-3:#5C6B68;
  --paper:#F7F5F0; --paper-2:#EFEBE3; --card:#FFFFFF;
  --primary:#1F6F68; --primary-dk:#16554F; --primary-lt:#E4EFEC;
  --accent:#C25A2B;
  --line:rgba(20,32,31,.10); --line-2:rgba(20,32,31,.06);
  --r-xs:8px; --r-sm:10px; --r-md:14px; --r-lg:20px; --r-xl:28px;
  --shadow-1:0 8px 24px -18px rgba(20,32,31,.28);
  --shadow-2:0 16px 32px -20px rgba(20,32,31,.34);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

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

.rk-section{padding:56px 0}
@media(min-width:768px){.rk-section{padding:96px 0}}
.rk-section--tight{padding:44px 0}
@media(min-width:768px){.rk-section--tight{padding:64px 0}}
.rk-divider{height:1px;background:var(--line-2);border:0;margin:0}

.rk-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease)}
.rk-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}

.rk-h2{position:relative;padding-left:16px;font-size:clamp(24px,3vw,34px);line-height:1.25}
.rk-h2::before{content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;border-radius:2px;background:var(--primary)}
.rk-h3{font-size:20px;line-height:1.35}
.rk-lead{margin-top:14px;max-width:780px;color:var(--ink-3);font-size:16px}
.rk-sec-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}

.rk-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.6;background:var(--primary-lt);color:var(--primary-dk)}
.rk-tag{display:inline-flex;align-items:center;padding:3px 9px;border-radius:999px;font-size:12px;line-height:1.6;background:rgba(194,90,43,.10);color:var(--accent)}

.rk-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 22px;border-radius:var(--r-sm);font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:all .2s var(--ease);white-space:nowrap}
.rk-btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -16px rgba(20,32,31,.7)}
.rk-btn-primary:hover{background:var(--primary-dk);transform:translateY(-1px);box-shadow:0 16px 26px -16px rgba(20,32,31,.7)}
.rk-btn-primary:active{transform:translateY(0)}
.rk-btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line)}
.rk-btn-ghost:hover{border-color:rgba(31,111,104,.4);color:var(--primary-dk)}
.rk-btn-accent{background:var(--accent);color:#fff}
.rk-btn-accent:hover{background:#A94A20;transform:translateY(-1px)}
.rk-link{color:var(--primary-dk);font-weight:600;text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s var(--ease)}
.rk-link:hover{border-bottom-color:var(--primary-dk)}

/* 导航 */
.rk-header{position:sticky;top:0;z-index:60;padding:10px 0;background:linear-gradient(to bottom,rgba(247,245,240,.94),rgba(247,245,240,.72));backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.rk-navbar{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:10px 12px;box-shadow:var(--shadow-1)}
.rk-logo{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--ink);font-size:17px;white-space:nowrap;letter-spacing:-.01em}
.rk-logo-mark{width:34px;height:34px;border-radius:var(--r-xs);background:var(--primary);display:grid;place-items:center;flex:0 0 auto}
.rk-navlist{display:none;align-items:center;gap:6px;margin-left:6px}
@media(min-width:1024px){.rk-navlist{display:flex}}
.rk-navitem{display:flex;align-items:center;gap:8px;min-height:44px;padding:9px 12px;border-radius:var(--r-sm);font-size:14px;color:var(--ink-2);border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease)}
.rk-navitem svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.6}
.rk-navitem:hover{background:var(--primary-lt);color:var(--primary-dk)}
.rk-navitem[aria-current="page"]{background:var(--primary);color:#fff;border-color:var(--primary)}
.rk-nav-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.rk-burger{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-sm);background:#fff;border:1px solid var(--line);cursor:pointer}
@media(min-width:1024px){.rk-burger{display:none}}
.rk-mobile{display:none;margin-top:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-2);padding:12px}
.rk-mobile.is-open{display:block}
.rk-mobile-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.rk-mobile .rk-navitem{justify-content:flex-start}
.rk-mobile-cta{margin-top:10px;width:100%}

/* Hero */
.rk-hero{position:relative;overflow:hidden;min-height:88vh;display:flex;align-items:center}
.rk-hero-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(20,32,31,.62),rgba(20,32,31,.30)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center}
.rk-hero-inner{position:relative;width:100%;padding:104px 0 56px}
.rk-hero h1{color:#fff;font-size:clamp(34px,5vw,58px);line-height:1.18;font-weight:600;max-width:900px}
.rk-hero-sub{margin-top:20px;max-width:680px;color:rgba(255,255,255,.86);font-size:17px;line-height:1.9}
.rk-hero-eyebrow{display:inline-flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.rk-hero-eyebrow span{padding:5px 12px;border-radius:999px;font-size:12.5px;color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22)}
.rk-hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.rk-hero-note{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.72)}
.rk-stats{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin-top:52px;border-top:1px solid rgba(255,255,255,.22)}
@media(min-width:768px){.rk-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.rk-stat{padding:20px 18px 6px;border-left:1px solid rgba(255,255,255,.16)}
.rk-stat:first-child{border-left:0;padding-left:0}
.rk-stat b{display:block;color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:600;line-height:1.3}
.rk-stat span{display:block;margin-top:6px;font-size:13px;color:rgba(255,255,255,.76)}

/* 对比表 */
.rk-cmp-wrap{margin-top:34px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card);box-shadow:var(--shadow-1);-webkit-overflow-scrolling:touch}
.rk-cmp{width:100%;min-width:880px;border-collapse:separate;border-spacing:0;font-size:15px}
.rk-cmp thead th{position:sticky;top:76px;z-index:3;background:var(--card);text-align:left;padding:16px 18px;font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);white-space:nowrap}
.rk-cmp thead th.rk-cmp-first{left:0;z-index:4;border-right:1px solid var(--line)}
.rk-cmp thead th.rk-cmp-rec{background:rgba(228,239,236,.72);box-shadow:inset 0 2px 0 var(--primary)}
.rk-cmp tbody td{padding:16px 18px;border-bottom:1px solid var(--line-2);height:62px;vertical-align:middle;color:var(--ink-2)}
.rk-cmp tbody tr:hover td{background:rgba(228,239,236,.4)}
.rk-cmp tbody td.rk-cmp-first{position:sticky;left:0;z-index:2;background:var(--card);font-weight:600;color:var(--ink);border-right:1px solid var(--line);box-shadow:6px 0 12px -14px rgba(20,32,31,.5)}
.rk-cmp tbody tr:hover td.rk-cmp-first{background:#F3F8F6}
.rk-cmp tbody td.rk-cmp-rec{background:rgba(228,239,236,.5)}
.rk-cmp tbody tr:last-child td{border-bottom:0}
.rk-yes{display:inline-flex;align-items:center;justify-content:center}
.rk-yes svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2}
.rk-no{color:rgba(20,32,31,.3);font-weight:600}
.rk-cmp-note{margin-top:14px;font-size:13px;color:var(--ink-3)}

/* 等级轴 */
.rk-tiers{position:relative;margin-top:38px;padding-left:28px}
.rk-tiers::before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--primary),rgba(31,111,104,.12))}
.rk-tier{position:relative;padding:24px 0 26px;border-bottom:1px solid var(--line-2);transition:margin .3s var(--ease)}
.rk-tier:last-child{border-bottom:0}
.rk-tier::before{content:"";position:absolute;left:-28px;top:36px;width:16px;height:16px;border-radius:50%;background:var(--card);border:2px solid var(--primary);opacity:.35;transform:scale(.6);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.rk-tier.is-in::before{opacity:1;transform:scale(1)}
@media(min-width:1024px){
  .rk-tier:nth-child(even){margin-left:24px}
}
.rk-tier-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.rk-tier-no{font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.12em}
.rk-tier h3{font-size:21px;line-height:1.35}
.rk-tier-points{margin-top:14px;display:grid;gap:8px}
.rk-tier-points li{position:relative;padding-left:18px;font-size:15.5px;color:var(--ink-2)}
.rk-tier-points li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--primary)}

/* Bento */
.rk-bento{display:grid;gap:20px;margin-top:34px;grid-template-columns:1fr}
@media(min-width:768px){.rk-bento{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){
  .rk-bento{grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:minmax(160px,auto)}
  .rk-bento .b1{grid-column:span 2;grid-row:span 2}
  .rk-bento .b2{grid-column:span 2}
  .rk-bento .b3{grid-column:span 2}
  .rk-bento .b4{grid-column:span 4}
}
.rk-bento-card{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:200px;padding:22px;border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;background:#fff;box-shadow:var(--shadow-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.rk-bento-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rk-bento-media{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1);transition:transform .5s var(--ease),opacity .3s var(--ease)}
.rk-bento-card:hover .rk-bento-media{transform:scale(1.03)}
.rk-bento-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,32,31,.22),rgba(20,32,31,.82));transition:opacity .3s var(--ease)}
.rk-bento-card:hover .rk-bento-shade{opacity:.86}
.rk-bento-body{position:relative;z-index:2}
.rk-bento-card h3{color:#fff;font-size:21px;line-height:1.4}
.rk-bento-card p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.82)}
.rk-bento-card .rk-link{color:#fff;display:inline-block;margin-top:12px;font-size:14px}
.rk-bento-card .rk-link:hover{border-bottom-color:#fff}
.rk-bento-card.is-plain{justify-content:space-between;background:var(--card)}
.rk-bento-card.is-plain h3{color:var(--ink)}
.rk-bento-card.is-plain p{color:var(--ink-3)}
.rk-bento-card.is-plain .rk-link{color:var(--primary-dk)}
.rk-bento-icon{width:40px;height:40px;border-radius:var(--r-xs);background:var(--primary-lt);display:grid;place-items:center;margin-bottom:14px}
.rk-bento-icon svg{width:20px;height:20px;stroke:var(--primary-dk);fill:none;stroke-width:1.6}

/* 流程 */
.rk-steps{display:grid;gap:20px;margin-top:34px;grid-template-columns:1fr}
@media(min-width:640px){.rk-steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.rk-steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.rk-step{padding:24px 22px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.rk-step:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rk-step-no{font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.14em}
.rk-step h3{margin-top:10px;font-size:19px}
.rk-step p{margin-top:10px;font-size:14.5px;color:var(--ink-3)}

/* 列表卡片（CMS） */
.rk-posts{display:grid;gap:20px;margin-top:34px;grid-template-columns:1fr}
@media(min-width:1024px){.rk-posts{grid-template-columns:repeat(2,minmax(0,1fr))}}
.rk-post{display:flex;flex-direction:column;overflow:hidden;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.rk-post:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rk-post.is-lead{grid-column:span 1}
@media(min-width:1024px){.rk-post.is-lead{grid-row:span 2}}
.rk-post-media{display:block;overflow:hidden;aspect-ratio:16/10;background:var(--paper-2)}
.rk-post-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rk-post:hover .rk-post-media img{transform:scale(1.03)}
.rk-post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rk-post h3{font-size:19px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rk-post p{font-size:14.5px;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rk-post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:auto;font-size:13px;color:var(--ink-3)}
.rk-post-list{display:grid;gap:20px;align-content:start}
@media(min-width:768px){.rk-post-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.rk-post-list{grid-template-columns:1fr}}
.rk-post.is-small{flex-direction:row;align-items:stretch}
.rk-post.is-small .rk-post-media{width:38%;min-width:120px;aspect-ratio:auto;border-radius:0}
.rk-post.is-small h3{font-size:17px;line-height:1.45}
.rk-post.is-small p{-webkit-line-clamp:2}
@media(max-width:519px){.rk-post.is-small{flex-direction:column}.rk-post.is-small .rk-post-media{width:100%;aspect-ratio:16/10}}
.rk-empty{margin-top:34px;padding:38px 26px;border:1px dashed var(--line);border-radius:var(--r-lg);background:rgba(255,255,255,.6);text-align:center}
.rk-empty p{color:var(--ink-3);font-size:15px}
.rk-empty .rk-btn{margin-top:18px}

/* FAQ */
.rk-faq{margin-top:30px;border-top:1px solid var(--line-2)}
.rk-faq-item{border-bottom:1px solid var(--line-2)}
.rk-faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;padding:20px 0;font-size:17.5px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none}
.rk-faq-item summary::-webkit-details-marker{display:none}
.rk-faq-item summary:hover{color:var(--primary-dk)}
.rk-faq-icon{flex:0 0 auto;width:22px;height:22px;transition:transform .32s var(--ease)}
.rk-faq-icon svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.8}
.rk-faq-item[open] .rk-faq-icon{transform:rotate(180deg)}
.rk-faq-body{padding:0 0 18px;font-size:16px;color:var(--ink-2);max-width:840px}

/* CTA */
.rk-cta{position:relative;overflow:hidden;background:var(--ink);border-radius:var(--r-xl);padding:40px 26px}
@media(min-width:768px){.rk-cta{padding:56px 48px}}
.rk-cta-arc{position:absolute;left:-6%;bottom:-38%;width:120%;height:auto;opacity:.06;pointer-events:none}
.rk-cta-grid{position:relative;display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:1024px){.rk-cta-grid{grid-template-columns:1.15fr .85fr;align-items:center}}
.rk-cta h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3}
.rk-cta p{margin-top:14px;color:rgba(255,255,255,.78);font-size:15.5px}
.rk-cta-points{margin-top:22px;display:grid;gap:10px}
.rk-cta-points li{position:relative;padding-left:20px;color:rgba(255,255,255,.86);font-size:15px}
.rk-cta-points li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--primary-lt)}
.rk-form{display:grid;gap:12px}
.rk-form label{font-size:13px;color:rgba(255,255,255,.7)}
.rk-input{width:100%;min-height:46px;padding:12px 14px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:#fff;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.rk-input::placeholder{color:rgba(255,255,255,.45)}
.rk-input:focus{outline:none;border-color:var(--primary-lt);box-shadow:0 0 0 2px rgba(228,239,236,.28)}
.rk-form-msg{font-size:12.5px;color:#E9A183;min-height:18px}
.rk-form-msg.is-ok{color:var(--primary-lt)}
.rk-cta-btnrow{display:flex;flex-wrap:wrap;gap:10px}

/* 页脚 */
.rk-footer{margin-top:56px;background:var(--ink);border-radius:var(--r-xl) var(--r-xl) 0 0;color:rgba(255,255,255,.78)}
.rk-footer-inner{padding:56px 0 24px}
.rk-footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:640px){.rk-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.rk-footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.rk-footer h3{color:#fff;font-size:15px;margin-bottom:16px}
.rk-footer .rk-logo{color:#fff}
.rk-footer p{font-size:13.5px;color:rgba(255,255,255,.72)}
.rk-footer-links{display:grid;gap:8px}
.rk-footer-links a{display:flex;align-items:center;gap:8px;min-height:40px;padding:8px 12px;border-radius:var(--r-sm);font-size:14px;color:rgba(255,255,255,.82);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);transition:background .2s var(--ease),color .2s var(--ease)}
.rk-footer-links a:hover{background:rgba(228,239,236,.16);color:#fff}
.rk-footer-links svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6}
.rk-footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.66)}
.rk-footer-bottom a{color:rgba(255,255,255,.78)}
.rk-footer-bottom a:hover{color:var(--primary-lt)}
.rk-footer .rk-input{border-color:rgba(255,255,255,.2)}
.rk-footer .rk-form-msg{color:#E9A183}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal-d1{transition-delay:.06s}
.reveal-d2{transition-delay:.12s}
.reveal-d3{transition-delay:.18s}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .rk-tier::before{opacity:1;transform:scale(1);transition:none}
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --ink:#14201F;
  --ink-2:#2A3A38;
  --ink-3:#5C6B68;
  --paper:#F7F5F0;
  --paper-2:#EFEBE3;
  --card:#FFFFFF;
  --primary:#1F6F68;
  --primary-dk:#16554F;
  --primary-lt:#E4EFEC;
  --accent:#C25A2B;
  --line:rgba(20,32,31,.10);
  --line-2:rgba(20,32,31,.06);
  --r-xs:8px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --shadow-1:0 8px 24px -18px rgba(20,32,31,.28);
  --shadow-2:0 16px 32px -20px rgba(20,32,31,.34);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-2);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.rk-container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.rk-container{padding:0 32px}}

/* ---------- header ---------- */
.rk-header{
  position:sticky;top:0;z-index:60;
  padding:10px 0;
  transition:background .25s var(--ease), box-shadow .25s var(--ease);
}
.rk-header.is-scrolled{
  background:rgba(247,245,240,.86);
  backdrop-filter:blur(10px);
  box-shadow:0 10px 30px -24px rgba(20,32,31,.5);
}
.rk-navbar{
  display:flex;align-items:center;gap:14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:10px 12px;
  box-shadow:var(--shadow-1);
}
.rk-logo{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:16px;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.rk-logo-mark{
  width:32px;height:32px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-dk) 100%);
  flex:0 0 auto;
}
.rk-navlist{display:none;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;min-width:0}
.rk-navitem{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 12px;border-radius:var(--r-sm);
  font-size:13.5px;font-weight:600;color:var(--ink-2);
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;min-height:44px;
}
.rk-navitem svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7;flex:0 0 auto}
.rk-navitem:hover{background:var(--primary-lt);color:var(--primary-dk)}
.rk-navitem[aria-current="page"]{background:var(--primary);color:#fff;border-color:var(--primary)}
.rk-nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.rk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;min-height:44px;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.rk-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8}
.rk-btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -16px rgba(31,111,104,.9)}
.rk-btn-primary:hover{background:var(--primary-dk);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.rk-btn-primary:active{transform:translateY(0)}
.rk-btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -16px rgba(194,90,43,.9)}
.rk-btn-accent:hover{background:#A94A20;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.rk-btn-accent:active{transform:translateY(0)}
.rk-btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2)}
.rk-btn-ghost:hover{border-color:rgba(31,111,104,.4);color:var(--primary-dk)}
.rk-burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--line);cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.rk-burger:hover{background:var(--primary-lt);border-color:rgba(31,111,104,.3)}
.rk-mobile{display:none;margin-top:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:10px;box-shadow:var(--shadow-2)}
.rk-mobile.is-open{display:block}
.rk-mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.rk-mobile-grid .rk-navitem{justify-content:flex-start;background:var(--paper);border-color:var(--line-2)}
.rk-mobile-cta{margin-top:10px}
.rk-mobile-cta .rk-btn{width:100%}
@media (min-width:1024px){
  .rk-navlist{display:flex}
  .rk-burger{display:none}
  .rk-mobile{display:none !important}
}

/* ---------- article shell ---------- */
.rk-main{padding:26px 0 0}
.rk-crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);line-height:1.7;
}
.rk-crumb a{color:var(--ink-3);transition:color .2s var(--ease)}
.rk-crumb a:hover{color:var(--primary-dk);text-decoration:underline;text-underline-offset:3px}
.rk-crumb .rk-crumb-sep{opacity:.5}
.rk-crumb .rk-crumb-current{opacity:.6;max-width:60ch}

.rk-article-shell{display:block}
.rk-article{
  max-width:760px;margin:0 auto;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:28px 22px 34px;
  box-shadow:var(--shadow-1);
}
@media (min-width:1024px){
  .rk-article{padding:44px 52px 52px}
}
.rk-article h1{
  font-size:clamp(26px,4vw,40px);
  line-height:1.28;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink);
  margin-top:18px;
}
.rk-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  margin-top:18px;padding-bottom:16px;
  font-size:13px;color:var(--ink-3);
  border-bottom:1px solid var(--line-2);
}
.rk-meta .rk-meta-dot{width:4px;height:4px;border-radius:999px;background:var(--line);display:inline-block}
.rk-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--primary-lt);color:var(--primary-dk);
}
.rk-badge-accent{background:rgba(194,90,43,.1);color:var(--accent)}

/* ---------- prose ---------- */
.rk-prose{margin-top:24px;font-size:17px;line-height:1.95;color:var(--ink-2)}
.rk-prose p{margin-bottom:1.4em}
.rk-prose h2{
  font-size:clamp(22px,2.5vw,28px);font-weight:600;line-height:1.35;color:var(--ink);
  margin:2.2em 0 .9em;padding-left:12px;border-left:4px solid var(--primary);
}
.rk-prose h3{font-size:20px;font-weight:600;line-height:1.45;color:var(--ink);margin:1.6em 0 .7em}
.rk-prose h4{font-size:17px;font-weight:600;color:var(--ink);margin:1.4em 0 .6em}
.rk-prose ul,.rk-prose ol{margin:0 0 1.4em}
.rk-prose li{position:relative;padding-left:20px;margin-bottom:.6em}
.rk-prose li::before{
  content:"";position:absolute;left:2px;top:.74em;
  width:7px;height:7px;border-radius:2px;background:var(--primary);
}
.rk-prose ol{counter-reset:rko}
.rk-prose ol>li{padding-left:26px}
.rk-prose ol>li::before{
  counter-increment:rko;content:counter(rko) ".";
  width:auto;height:auto;background:none;border-radius:0;
  top:0;left:0;color:var(--primary-dk);font-weight:600;
}
.rk-prose blockquote{
  margin:0 0 1.4em;padding:16px 20px;
  background:var(--paper-2);border-left:3px solid var(--accent);
  border-radius:var(--r-sm);color:var(--ink-2);
}
.rk-prose blockquote p:last-child{margin-bottom:0}
.rk-prose img{border-radius:var(--r-md);margin:1.6em auto;width:100%}
.rk-prose figure{margin:1.6em 0}
.rk-prose figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.rk-prose a{color:var(--primary-dk);text-decoration:underline;text-underline-offset:3px}
.rk-prose a:hover{color:var(--accent)}
.rk-prose strong{color:var(--ink);font-weight:600}
.rk-prose hr{border:none;border-top:1px solid var(--line-2);margin:2em 0}
.rk-prose table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:0 0 1.4em;font-size:15px;
}
.rk-prose th,.rk-prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.rk-prose th{background:var(--paper-2);color:var(--ink);font-weight:600}
.rk-prose pre{
  background:var(--ink);color:#E8EFED;padding:18px;border-radius:var(--r-md);
  overflow-x:auto;margin:0 0 1.4em;font-size:14px;line-height:1.7;
}
.rk-prose code{
  background:var(--paper-2);color:var(--ink);padding:2px 6px;border-radius:6px;font-size:.92em;
}
.rk-prose pre code{background:none;color:inherit;padding:0}

.rk-empty{
  border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:34px 24px;text-align:center;background:var(--paper);
}
.rk-empty h2{font-size:20px;font-weight:600;color:var(--ink);border:none;padding:0;margin:0 0 10px}
.rk-empty p{color:var(--ink-3);font-size:15px;margin-bottom:18px}

/* ---------- article footer blocks ---------- */
.rk-tagrow{display:flex;flex-wrap:wrap;gap:8px;margin-top:36px;padding-top:22px;border-top:1px solid var(--line-2)}
.rk-backline{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:22px;
}
.rk-textlink{
  color:var(--primary-dk);font-weight:600;font-size:14px;
  display:inline-flex;align-items:center;gap:8px;
}
.rk-textlink svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8}
.rk-textlink:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- narrow CTA ---------- */
.rk-ctabar{
  max-width:760px;margin:26px auto 0;
  background:var(--ink);color:#fff;
  border-radius:var(--r-xl);
  padding:26px 24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  position:relative;overflow:hidden;
}
.rk-ctabar::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(255,255,255,.08);
}
.rk-ctabar h2{font-size:clamp(20px,2.4vw,26px);font-weight:600;color:#fff;line-height:1.35;margin:0 0 6px}
.rk-ctabar p{font-size:14px;color:rgba(255,255,255,.78);margin:0;max-width:44ch}
.rk-ctabar-actions{display:flex;flex-wrap:wrap;gap:10px;position:relative;z-index:1}
.rk-ctabar .rk-btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.rk-ctabar .rk-btn-ghost:hover{background:rgba(255,255,255,.1);border-color:var(--primary-lt);color:var(--primary-lt)}

/* ---------- continue reading ---------- */
.rk-more{padding:52px 0 0}
.rk-more-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:20px}
.rk-more-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;color:var(--ink);line-height:1.3;padding-left:12px;border-left:4px solid var(--primary)}
.rk-more-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:768px){.rk-more-grid{grid-template-columns:1fr 1fr}}
.rk-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rk-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(31,111,104,.28)}
.rk-card h3{font-size:18px;font-weight:600;color:var(--ink);margin:12px 0 8px;line-height:1.45}
.rk-card p{font-size:14.5px;color:var(--ink-3);line-height:1.85}
.rk-card .rk-textlink{margin-top:14px}

/* ---------- footer ---------- */
.rk-footer{
  margin-top:64px;
  background:var(--ink);
  color:rgba(255,255,255,.82);
  border-radius:var(--r-xl) var(--r-xl) 0 0;
  padding:52px 0 0;
}
.rk-footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.rk-footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
@media (min-width:1024px){.rk-footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr}}
.rk-footer h3{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px;letter-spacing:.02em}
.rk-footer p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.72)}
.rk-footer .rk-logo{color:#fff}
.rk-footer-links{display:flex;flex-direction:column;gap:8px}
.rk-footer-links a{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13.5px;color:rgba(255,255,255,.78);
  padding:8px 10px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  min-height:40px;
}
.rk-footer-links a svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;flex:0 0 auto}
.rk-footer-links a:hover{background:rgba(228,239,236,.12);color:var(--primary-lt);border-color:rgba(228,239,236,.3)}
.rk-form{display:flex;flex-direction:column;gap:10px}
.rk-form label{font-size:13px;color:rgba(255,255,255,.66)}
.rk-input{
  width:100%;padding:12px 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  color:#fff;font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.rk-input::placeholder{color:rgba(255,255,255,.42)}
.rk-input:focus{border-color:var(--primary-lt);box-shadow:0 0 0 3px rgba(31,111,104,.35);outline:none}
.rk-form-hint{font-size:12px;color:var(--accent);min-height:16px}
.rk-footer-bottom{
  margin-top:44px;padding-top:20px;padding-bottom:26px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.rk-footer-bottom a{color:rgba(255,255,255,.72)}
.rk-footer-bottom a:hover{color:var(--primary-lt);text-decoration:underline;text-underline-offset:3px}

@media (max-width:520px){
  .rk-article{padding:24px 18px 28px;border-radius:var(--r-lg)}
  .rk-prose{font-size:16px}
  .rk-ctabar{padding:22px 18px;border-radius:var(--r-lg)}
  .rk-ctabar-actions .rk-btn{width:100%}
  .rk-footer{padding-top:40px}
  .rk-mobile-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category1 */
:root{
  --ink:#14201F; --ink-2:#2A3A38; --ink-3:#5C6B68;
  --paper:#F7F5F0; --paper-2:#EFEBE3; --card:#FFFFFF;
  --primary:#1F6F68; --primary-dk:#16554F; --primary-lt:#E4EFEC;
  --accent:#C25A2B;
  --line:rgba(20,32,31,.10); --line-2:rgba(20,32,31,.06);
  --r-xs:8px; --r-sm:10px; --r-md:14px; --r-lg:20px; --r-xl:28px;
  --shadow-1:0 8px 24px -18px rgba(20,32,31,.28);
  --shadow-2:0 16px 32px -20px rgba(20,32,31,.34);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease),border-color 200ms var(--ease),background-color 200ms var(--ease)}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 容器 ---------- */
.rk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.rk-container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.rk-header{position:sticky;top:0;z-index:60;padding:10px 0;background:rgba(247,245,240,.88);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line-2)}
.rk-navbar{
  display:flex;align-items:center;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:10px 12px;box-shadow:var(--shadow-1);
}
.rk-logo{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.rk-logo-mark{width:32px;height:32px;border-radius:var(--r-sm);background:var(--primary);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.rk-navlist{display:none;gap:6px;margin-left:auto}
.rk-navitem{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:9px 14px;border-radius:var(--r-sm);
  font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  transition:background-color 200ms var(--ease),color 200ms var(--ease);
}
.rk-navitem svg{width:17px;height:17px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.rk-navitem:hover{background:var(--primary-lt);color:var(--primary-dk)}
.rk-navitem[aria-current="page"]{background:var(--primary);color:#fff}
.rk-nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.rk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:14px;font-weight:600;line-height:1.2;
  transition:background-color 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.rk-btn:active{transform:translateY(0)}
.rk-btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -16px rgba(31,111,104,.9)}
.rk-btn-primary:hover{background:var(--primary-dk);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.rk-btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -16px rgba(194,90,43,.85)}
.rk-btn-accent:hover{background:#A94A21;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.rk-btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2)}
.rk-btn-ghost:hover{border-color:rgba(31,111,104,.4);color:var(--primary-dk)}
.rk-btn-block{width:100%}
.rk-burger{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff}
.rk-burger:hover{background:var(--primary-lt)}
.rk-mobile{display:none;margin-top:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:12px;box-shadow:var(--shadow-2)}
.rk-mobile.is-open{display:block}
.rk-mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}
.rk-mobile-grid .rk-navitem{justify-content:flex-start;border:1px solid var(--line-2);font-size:13px}
@media (min-width:1024px){
  .rk-navlist{display:flex}
  .rk-burger{display:none}
  .rk-nav-actions{margin-left:0}
  .rk-mobile{display:none !important}
}

/* ---------- 窄幅首屏 ---------- */
.c1-hero{
  position:relative;overflow:hidden;color:#fff;
  min-height:44vh;display:flex;align-items:flex-end;
  background-image:linear-gradient(180deg,rgba(20,32,31,.72) 0%,rgba(20,32,31,.45) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:52px 0 40px;
}
.c1-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:64px;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 64' preserveAspectRatio='none'><path d='M0 64 C 300 8 900 0 1200 56 L1200 64 Z' fill='%23F7F5F0'/></svg>") no-repeat center bottom;
  background-size:cover;opacity:.9;pointer-events:none;
}
.c1-hero-inner{position:relative;z-index:2;max-width:840px}
.c1-crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:18px}
.c1-crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.c1-crumb span[aria-current]{color:rgba(255,255,255,.6)}
.c1-hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:600;letter-spacing:-.01em;color:#fff;
}
.c1-hero p{margin-top:16px;font-size:clamp(15px,1.6vw,17px);line-height:1.85;color:rgba(255,255,255,.86);max-width:720px}
.c1-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 胶囊筛选条 ---------- */
.c1-chips-wrap{padding:22px 0 0}
.c1-chips{display:flex;flex-wrap:wrap;gap:8px}
.c1-chip{
  display:inline-flex;align-items:center;min-height:40px;padding:8px 16px;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--ink-2);transition:all 200ms var(--ease);
}
.c1-chip:hover{border-color:rgba(31,111,104,.4);color:var(--primary-dk)}
.c1-chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff}

/* ---------- 板块通用 ---------- */
.c1-section{padding:44px 0}
@media (min-width:1024px){.c1-section{padding:72px 0}}
.c1-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.c1-h2{
  position:relative;padding-left:14px;
  font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:600;color:var(--ink);
}
.c1-h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--primary)}
.c1-sub{font-size:14px;color:var(--ink-3);max-width:640px;margin-top:10px}
.c1-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--primary-dk)}
.c1-link:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 数据条 ---------- */
.c1-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.c1-stat{padding:20px 4px;border-right:1px solid var(--line-2)}
.c1-stat:last-child{border-right:0}
.c1-stat b{display:block;font-size:clamp(24px,3vw,34px);font-weight:600;color:var(--ink);line-height:1.2}
.c1-stat span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3)}
@media (min-width:768px){.c1-stats{grid-template-columns:repeat(4,1fr)}.c1-stat{padding:26px 20px}}

/* ---------- 主体两栏 ---------- */
.c1-layout{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.c1-layout{grid-template-columns:8fr 4fr;gap:32px;align-items:start}}

/* ---------- 权益卡片 ---------- */
.c1-cards{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.c1-cards{grid-template-columns:1fr 1fr}}
.c1-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.c1-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(31,111,104,.28)}
.c1-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.c1-media img{width:100%;height:100%;object-fit:cover;transition:transform 200ms var(--ease)}
.c1-card:hover .c1-media img{transform:scale(1.03)}
.c1-card-body{padding:18px 18px 20px}
.c1-badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:500;background:var(--primary-lt);color:var(--primary-dk)}
.c1-badge-accent{background:rgba(194,90,43,.1);color:var(--accent)}
.c1-card h3{margin-top:12px;font-size:19px;line-height:1.4;font-weight:600;color:var(--ink)}
.c1-card p{margin-top:8px;font-size:14px;line-height:1.85;color:var(--ink-2)}
.c1-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--ink-3)}

/* ---------- 侧栏 ---------- */
.c1-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){.c1-side{position:sticky;top:96px}}
.c1-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-1)}
.c1-panel h3{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:14px}
.c1-side-link{
  display:flex;align-items:center;gap:12px;padding:12px;border-radius:var(--r-sm);
  border:1px solid var(--line-2);font-size:14px;color:var(--ink-2);margin-bottom:8px;
}
.c1-side-link:last-of-type{margin-bottom:0}
.c1-side-link svg{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:var(--primary);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.c1-side-link:hover{background:var(--primary-lt);border-color:rgba(31,111,104,.28);color:var(--primary-dk)}
.c1-flow li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line-2);font-size:14px;color:var(--ink-2)}
.c1-flow li:last-child{border-bottom:0;padding-bottom:0}
.c1-flow b{flex:0 0 auto;width:24px;font-weight:600;color:var(--primary);font-variant-numeric:tabular-nums}
.c1-cta-panel{background:var(--primary-dk);border-radius:var(--r-lg);padding:22px;color:#fff;position:relative;overflow:hidden}
.c1-cta-panel h3{color:#fff;font-size:17px;font-weight:600}
.c1-cta-panel p{margin-top:8px;font-size:13px;line-height:1.8;color:rgba(255,255,255,.84)}
.c1-cta-panel .rk-btn{margin-top:16px}
.c1-cta-panel::after{
  content:"";position:absolute;right:-40px;bottom:-50px;width:180px;height:180px;border-radius:50%;
  border:1px solid rgba(255,255,255,.08);
}

/* ---------- FAQ ---------- */
.c1-faq{border-top:1px solid var(--line-2)}
.faq-item{border-bottom:1px solid var(--line-2)}
.faq-q{margin:0}
.faq-btn{
  display:flex;width:100%;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-btn:hover{color:var(--primary-dk)}
.faq-btn svg{width:20px;height:20px;flex:0 0 auto;fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round;transition:transform 320ms var(--ease)}
.faq-btn[aria-expanded="true"] svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a-inner{padding:0 0 20px;font-size:16px;line-height:1.9;color:var(--ink-2);max-width:820px}

/* ---------- 窄幅 CTA ---------- */
.c1-cta{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;
  border-radius:var(--r-xl);padding:30px 24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.c1-cta h2{font-size:clamp(20px,2.4vw,28px);font-weight:600;color:#fff;line-height:1.35}
.c1-cta p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.8);max-width:620px}
.c1-cta-btns{display:flex;flex-wrap:wrap;gap:12px}
.c1-cta-deco{position:absolute;right:-60px;top:-70px;width:280px;height:280px;border-radius:50%;border:1px solid rgba(255,255,255,.07);pointer-events:none}

/* ---------- 页脚 ---------- */
.rk-footer{margin-top:64px;background:var(--ink);color:rgba(255,255,255,.78);border-radius:var(--r-xl) var(--r-xl) 0 0;padding:52px 0 24px;font-size:14px}
.rk-footer .rk-logo{color:#fff}
.rk-footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.rk-footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.rk-footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.rk-footer h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.rk-footer-links{display:flex;flex-direction:column;gap:8px}
.rk-footer-links a{display:inline-flex;align-items:center;gap:10px;min-height:36px;color:rgba(255,255,255,.8);font-size:14px}
.rk-footer-links a svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.85}
.rk-footer-links a:hover{color:var(--primary-lt)}
.rk-form{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.rk-form label{font-size:13px;color:rgba(255,255,255,.72)}
.rk-input{
  width:100%;padding:12px 14px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;font-size:14px;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.rk-input::placeholder{color:rgba(255,255,255,.45)}
.rk-input:focus{outline:none;border-color:var(--primary-lt);box-shadow:0 0 0 2px rgba(228,239,236,.18)}
.rk-form-note{font-size:12px;color:rgba(255,255,255,.6)}
.rk-form-error{font-size:12px;color:#F0A98A;min-height:16px}
.rk-footer-bottom{margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62)}
.rk-footer-bottom a{color:rgba(255,255,255,.78)}
.rk-footer-bottom a:hover{color:var(--primary-lt)}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .faq-a{max-height:none}
}

/* roulang page: category2 */
:root{
    --ink:#14201F;
    --ink-2:#2A3A38;
    --ink-3:#5C6B68;
    --paper:#F7F5F0;
    --paper-2:#EFEBE3;
    --card:#FFFFFF;
    --primary:#1F6F68;
    --primary-dk:#16554F;
    --primary-lt:#E4EFEC;
    --accent:#C25A2B;
    --line:rgba(20,32,31,.10);
    --line-2:rgba(20,32,31,.06);
    --r-xs:8px;--r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;
    --shadow:0 8px 24px -18px rgba(20,32,31,.28);
    --shadow-h:0 16px 32px -20px rgba(20,32,31,.34);
    --ease:cubic-bezier(.2,.8,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
  body{
    margin:0;
    font-family:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
    font-size:16px;
    line-height:1.9;
    color:var(--ink-2);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:var(--primary-dk);text-decoration:none;transition:color .2s var(--ease)}
  a:hover{color:var(--primary)}
  button{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:-.01em}
  p{margin:0 0 1.15em}
  ul,ol{margin:0 0 1.15em;padding-left:1.15em}
  li{margin:.35em 0}
  table{border-collapse:collapse;width:100%}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

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

  /* ============ 导航 ============ */
  .rk-header{
    position:sticky;top:0;z-index:80;
    padding:12px 0 10px;
    background:rgba(247,245,240,.88);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line-2);
  }
  .rk-navbar{
    display:flex;align-items:center;gap:16px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    padding:10px 12px;
    box-shadow:var(--shadow);
  }
  .rk-logo{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:16px;color:var(--ink);letter-spacing:-.01em;flex:0 0 auto}
  .rk-logo:hover{color:var(--ink)}
  .rk-logo-mark{
    width:32px;height:32px;border-radius:var(--r-xs);
    background:linear-gradient(150deg,var(--primary),var(--primary-dk));
    display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  }
  .rk-navlist{display:none;align-items:center;gap:6px;margin-left:8px}
  .rk-navitem{
    display:inline-flex;align-items:center;gap:8px;
    padding:9px 12px;border-radius:var(--r-sm);
    font-size:13.5px;color:var(--ink-2);
    border:1px solid transparent;min-height:44px;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .rk-navitem svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7;flex:0 0 auto}
  .rk-navitem:hover{background:var(--primary-lt);color:var(--primary-dk)}
  .rk-navitem[aria-current="page"]{background:var(--primary);color:#fff;border-color:var(--primary)}
  .rk-nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}

  .rk-btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--r-sm);
    font-size:14.5px;font-weight:600;line-height:1.2;
    border:1px solid transparent;cursor:pointer;min-height:44px;
    transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .rk-btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 20px -16px rgba(22,85,79,.9)}
  .rk-btn-primary:hover{background:var(--primary-dk);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -18px rgba(22,85,79,.95)}
  .rk-btn-primary:active{transform:translateY(0)}
  .rk-btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 20px -16px rgba(194,90,43,.9);padding:11px 18px}
  .rk-btn-accent:hover{background:#A94B21;color:#fff;transform:translateY(-1px)}
  .rk-btn-accent:active{transform:translateY(0)}
  .rk-btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line)}
  .rk-btn-ghost:hover{border-color:rgba(31,111,104,.4);color:var(--primary-dk);transform:translateY(-1px)}
  .rk-btn-ghost:active{transform:translateY(0)}
  .rk-btn-sm{padding:9px 16px;font-size:13.5px;min-height:40px}

  .rk-burger{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:var(--r-sm);
    background:#fff;border:1px solid var(--line);cursor:pointer;
    transition:background .2s var(--ease),border-color .2s var(--ease);
  }
  .rk-burger:hover{background:var(--primary-lt);border-color:rgba(31,111,104,.35)}

  .rk-mobile{display:none;margin-top:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:12px;box-shadow:var(--shadow)}
  .rk-mobile.is-open{display:block;animation:rkFade .25s var(--ease) both}
  .rk-mobile-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .rk-mobile-grid .rk-navitem{justify-content:flex-start}
  .rk-mobile .rk-btn{width:100%;margin-top:10px}

  @media (min-width:1024px){
    .rk-navlist{display:flex}
    .rk-burger{display:none}
    .rk-mobile{display:none !important}
  }
  @keyframes rkFade{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

  /* ============ 文档页头 ============ */
  .rk-dochead{padding:34px 0 26px;border-bottom:1px solid var(--line-2)}
  .rk-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
  .rk-crumb a{color:var(--ink-3)}
  .rk-crumb a:hover{color:var(--primary-dk)}
  .rk-crumb span[aria-current]{color:rgba(20,32,31,.6)}
  .rk-dochead h1{font-size:clamp(26px,4vw,40px);line-height:1.25;max-width:820px}
  .rk-dochead .rk-lead{margin-top:16px;max-width:760px;font-size:16.5px;color:var(--ink-2)}
  .rk-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:20px;font-size:13px;color:var(--ink-3)}
  .rk-meta b{font-weight:600;color:var(--ink-2)}

  .rk-tagline{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
  .rk-badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 10px;border-radius:999px;font-size:12px;
    background:var(--primary-lt);color:var(--primary-dk);border:1px solid rgba(31,111,104,.16);
  }
  .rk-badge-accent{background:rgba(194,90,43,.1);color:var(--accent);border-color:rgba(194,90,43,.18)}

  /* ============ 文档布局 3 / 9 ============ */
  .rk-doc{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;padding:44px 0 8px}
  @media (min-width:1024px){
    .rk-doc{grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:40px}
  }
  .rk-toc{display:none}
  @media (min-width:1024px){
    .rk-toc{display:block}
    .rk-toc-inner{position:sticky;top:104px}
  }
  .rk-toc h2{
    font-size:12px;letter-spacing:.14em;color:var(--ink-3);font-weight:600;
    text-transform:uppercase;margin-bottom:12px;
  }
  .rk-toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
  .rk-toc a{
    display:block;padding:9px 0 9px 16px;margin-left:-1px;
    border-left:2px solid transparent;font-size:13.5px;line-height:1.6;color:var(--ink-3);
  }
  .rk-toc a:hover{color:var(--primary-dk)}
  .rk-toc a.is-active{border-left-color:var(--primary);color:var(--primary-dk);font-weight:600}
  .rk-toc-note{
    margin-top:22px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-md);
    background:#fff;font-size:13px;color:var(--ink-3);
  }
  .rk-toc-note strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px;font-weight:600}

  .rk-docmain{min-width:0}
  .rk-sec{padding:0 0 34px;border-bottom:1px solid var(--line-2);margin-bottom:34px}
  .rk-sec:last-of-type{border-bottom:0}
  .rk-sec h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;position:relative;padding-left:14px;margin-bottom:18px}
  .rk-sec h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--primary)}
  .rk-sec h3{font-size:18px;line-height:1.45;margin:26px 0 10px;color:var(--ink)}
  .rk-sec p{font-size:16px}
  .rk-sec .rk-hint{font-size:13.5px;color:var(--ink-3)}

  .rk-list{list-style:none;padding:0;margin:16px 0 0}
  .rk-list li{position:relative;padding-left:18px;margin:.5em 0;font-size:15.5px}
  .rk-list li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--primary)}

  .rk-steps{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:12px}
  .rk-step{
    display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;align-items:start;
    padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  }
  .rk-step:hover{box-shadow:var(--shadow-h);transform:translateY(-2px);border-color:rgba(31,111,104,.28)}
  .rk-step-num{
    font-variant-numeric:tabular-nums;font-weight:600;font-size:15px;color:var(--primary-dk);
    background:var(--primary-lt);border-radius:var(--r-xs);height:32px;display:flex;align-items:center;justify-content:center;
  }
  .rk-step h4{font-size:15.5px;margin-bottom:4px}
  .rk-step p{margin:0;font-size:14.5px;color:var(--ink-3);line-height:1.8}

  /* 图形 */
  .rk-figure{margin:24px 0 0;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff}
  .rk-figure-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
  .rk-figure-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
  .rk-figure:hover .rk-figure-media img{transform:scale(1.03)}
  .rk-figure figcaption{padding:12px 16px;font-size:13px;color:var(--ink-3);border-top:1px solid var(--line-2)}

  /* 数据条 */
  .rk-bars{margin:22px 0 0;display:grid;gap:14px}
  .rk-bar{display:grid;grid-template-columns:104px minmax(0,1fr) 54px;align-items:center;gap:12px}
  .rk-bar-label{font-size:14px;color:var(--ink-2)}
  .rk-bar-track{height:10px;border-radius:999px;background:var(--paper-2);overflow:hidden}
  .rk-bar-track i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),#2E8C83)}
  .rk-bar-val{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;text-align:right}
  @media (max-width:560px){
    .rk-bar{grid-template-columns:88px minmax(0,1fr) 46px;gap:8px}
    .rk-bar-label{font-size:13px}
  }

  /* 统计块 */
  .rk-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line-2);border:1px solid var(--line-2);border-radius:var(--r-md);overflow:hidden;margin-top:24px}
  @media (min-width:768px){.rk-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .rk-stat{background:#fff;padding:16px 18px}
  .rk-stat b{display:block;font-size:22px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
  .rk-stat span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:4px}

  /* 表格 */
  .rk-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;margin-top:22px}
  .rk-table{min-width:640px}
  .rk-table th,.rk-table td{padding:15px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line-2)}
  .rk-table thead th{background:var(--paper);font-size:13.5px;color:var(--ink-3);font-weight:600;position:sticky;top:0}
  .rk-table tbody tr:last-child td{border-bottom:0}
  .rk-table tbody tr:hover td{background:rgba(228,239,236,.45)}
  .rk-table td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
  .rk-yes{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:999px;background:var(--primary-lt);color:var(--primary-dk);font-size:12px;font-weight:600}
  .rk-no{color:rgba(20,32,31,.3)}

  /* 版本记录 */
  .rk-log{list-style:none;padding:0;margin:20px 0 0}
  .rk-log li{display:grid;grid-template-columns:96px minmax(0,1fr);gap:16px;padding:14px 0;border-top:1px solid var(--line-2);font-size:14.5px}
  .rk-log li:first-child{border-top:0}
  .rk-log time{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
  @media (max-width:560px){.rk-log li{grid-template-columns:1fr;gap:4px}}

  /* FAQ */
  .rk-faq{margin-top:18px;border-top:1px solid var(--line-2)}
  .rk-faq-item{border-bottom:1px solid var(--line-2)}
  .rk-faq-q{
    width:100%;background:none;border:0;cursor:pointer;text-align:left;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 0;font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;
    min-height:44px;
  }
  .rk-faq-q:hover{color:var(--primary-dk)}
  .rk-faq-q .rk-faq-icon{
    flex:0 0 auto;width:22px;height:22px;border-radius:999px;border:1px solid rgba(194,90,43,.35);
    display:inline-flex;align-items:center;justify-content:center;color:var(--accent);
    transition:transform .32s var(--ease);
  }
  .rk-faq-q .rk-faq-icon svg{width:12px;height:12px;stroke:currentColor;stroke-width:2;fill:none}
  .rk-faq-item.is-open .rk-faq-icon{transform:rotate(180deg)}
  .rk-faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
  .rk-faq-a-inner{padding:0 0 18px;font-size:15.5px;color:var(--ink-2)}
  .rk-faq-a-inner p:last-child{margin-bottom:0}

  /* CTA 带 */
  .rk-cta{margin:8px 0 56px}
  .rk-cta-panel{
    position:relative;overflow:hidden;
    background:var(--ink);color:#E9EDEB;
    border-radius:var(--r-xl);
    padding:34px 26px;
    display:grid;gap:22px;
  }
  @media (min-width:900px){.rk-cta-panel{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);align-items:center;padding:40px 42px}}
  .rk-cta-panel h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3}
  .rk-cta-panel p{color:rgba(255,255,255,.78);margin:12px 0 0;font-size:15px}
  .rk-cta-list{list-style:none;padding:0;margin:16px 0 0}
  .rk-cta-list li{position:relative;padding-left:18px;font-size:14.5px;color:rgba(255,255,255,.82)}
  .rk-cta-list li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--primary-lt)}
  .rk-cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
  .rk-cta-panel .rk-btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
  .rk-cta-panel .rk-btn-ghost:hover{background:var(--primary-lt);color:var(--primary-dk);border-color:var(--primary-lt)}
  .rk-cta-note{font-size:12px;color:rgba(255,255,255,.6);margin-top:10px}
  .rk-cta-deco{position:absolute;right:-40px;bottom:-60px;width:320px;opacity:.06;pointer-events:none}

  /* 相关分类卡 */
  .rk-related{padding:0 0 64px}
  .rk-related-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:20px}
  .rk-related-head h2{font-size:clamp(20px,2.4vw,26px)}
  .rk-related-head span{font-size:13px;color:var(--ink-3)}
  .rk-grid-3{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
  @media (min-width:640px){.rk-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.rk-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .rk-card{
    display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    padding:20px;color:var(--ink-2);
    transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  }
  .rk-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px);border-color:rgba(31,111,104,.28);color:var(--ink-2)}
  .rk-card-icon{
    width:36px;height:36px;border-radius:var(--r-sm);background:var(--primary-lt);
    display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;
  }
  .rk-card-icon svg{width:18px;height:18px;fill:none;stroke:var(--primary-dk);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .rk-card h3{font-size:16.5px;margin-bottom:8px}
  .rk-card p{font-size:14px;color:var(--ink-3);line-height:1.8;margin:0}
  .rk-card .rk-more{display:inline-block;margin-top:14px;font-size:13.5px;color:var(--primary-dk);font-weight:600}
  .rk-card:hover .rk-more{text-decoration:underline;text-underline-offset:3px}

  /* 页脚 */
  .rk-footer{background:var(--ink);color:rgba(255,255,255,.78);border-radius:var(--r-xl) var(--r-xl) 0 0;padding:48px 0 0;margin-top:8px}
  .rk-footer a{color:rgba(255,255,255,.78)}
  .rk-footer a:hover{color:var(--primary-lt)}
  .rk-footer-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
  @media (min-width:768px){.rk-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.rk-footer-grid{grid-template-columns:1.3fr 1fr 1fr 1.2fr}}
  .rk-footer h3{color:#fff;font-size:15px;margin-bottom:14px}
  .rk-footer p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.7)}
  .rk-footer .rk-logo{color:#fff}
  .rk-footer .rk-logo:hover{color:#fff}
  .rk-footer-links{display:grid;gap:8px}
  .rk-footer-links a{
    display:inline-flex;align-items:center;gap:9px;padding:9px 12px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);font-size:13.5px;min-height:44px;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .rk-footer-links a svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;flex:0 0 auto}
  .rk-footer-links a:hover{background:rgba(228,239,236,.14);color:var(--primary-lt);border-color:rgba(228,239,236,.3)}

  .rk-form{display:grid;gap:10px;margin-top:4px}
  .rk-form label{font-size:13px;color:rgba(255,255,255,.72)}
  .rk-input{
    width:100%;padding:12px 14px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
    color:#fff;font-size:14px;min-height:44px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .rk-input::placeholder{color:rgba(255,255,255,.45)}
  .rk-input:focus{outline:none;border-color:var(--primary-lt);background:rgba(255,255,255,.1);box-shadow:0 0 0 2px rgba(228,239,236,.25)}
  .rk-form-msg{font-size:12px;color:var(--accent)}
  .rk-form-msg.is-ok{color:var(--primary-lt)}

  .rk-footer-bottom{
    margin-top:40px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.66);
  }
  .rk-footer-bottom a{color:rgba(255,255,255,.66)}
  .rk-footer-bottom a:hover{color:var(--primary-lt)}

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    html{scroll-behavior:auto}
  }
  @media (max-width:520px){
    .rk-navbar{gap:10px;padding:9px 10px}
    .rk-logo{font-size:15px}
    .rk-dochead{padding:26px 0 20px}
    .rk-sec{padding-bottom:26px;margin-bottom:26px}
    .rk-btn{padding:11px 18px}
  }