/* roulang page: index */
:root{
  --jade:#0F5C52;
  --jade-deep:#0A3B35;
  --jade-light:#14786A;
  --jade-ink:#0A2B27;
  --coral:#FF7A4D;
  --coral-deep:#E8632F;
  --page:#F7F4EF;
  --alt:#F1EDE6;
  --card:#FFFFFF;
  --line:#E7E1D8;
  --ink:#1C1F1D;
  --ink-2:#5A605C;
  --ink-3:#8B918C;
  --d-ink:#E8F1EE;
  --d-ink-2:#A9C0BA;
  --r-card:16px;
  --r-img:14px;
  --r-input:12px;
  --sh:0 10px 28px rgba(10,43,39,.07);
  --sh-h:0 18px 40px rgba(10,43,39,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--page);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;line-height:1.95;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{
  margin:0;font-weight:700;letter-spacing:.01em;color:var(--jade-deep);
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(20,120,106,.6);outline-offset:3px;border-radius:8px}
body.is-locked{overflow:hidden}

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

/* ============ 悬浮胶囊导航 ============ */
.nav-shell{position:fixed;top:14px;left:0;right:0;z-index:50;padding:0 16px}
.nav-pill{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:14px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:999px;padding:10px 12px 10px 18px;box-shadow:var(--sh);
}
.nav-logo{
  display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:15px;font-weight:700;
  color:var(--jade-deep);font-family:"Noto Serif SC","Songti SC",serif;letter-spacing:.02em;
}
.mark{
  width:28px;height:28px;border-radius:9px;flex:none;display:grid;place-items:center;color:#fff;
  font-size:13px;font-family:"DIN Alternate",Menlo,monospace;
  background:linear-gradient(140deg,var(--jade-light),var(--jade-deep));
}
.nav-menu{display:none;align-items:center;gap:4px;margin-left:auto}
@media (min-width:1024px){.nav-menu{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;
  border-radius:999px;font-size:15px;color:var(--ink-2);transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;
  background:var(--coral);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--jade)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--jade);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{display:none;margin-left:0}
@media (min-width:1024px){.nav-cta{display:inline-flex}}
.nav-burger{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;
  margin-left:auto;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--jade-deep);
  transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
.nav-burger:hover{background:#F1EDE6;border-color:rgba(15,92,82,.3)}
@media (min-width:1024px){.nav-burger{display:none}}
.burger-bar{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;position:relative}
.burger-bar::before,.burger-bar::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor}
.burger-bar::before{top:-6px}
.burger-bar::after{top:6px}

.nav-drawer{
  position:fixed;inset:0;z-index:60;background:rgba(10,43,39,.55);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.nav-drawer.is-open{opacity:1;visibility:visible}
.nav-drawer-panel{
  position:absolute;left:12px;right:12px;top:12px;background:#fff;border-radius:24px;
  padding:20px;box-shadow:var(--sh-h);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-title{font-family:"Noto Serif SC",serif;font-weight:700;font-size:16px;color:var(--jade-deep)}
.drawer-close{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--jade-deep);font-size:22px;line-height:1;display:grid;place-items:center;
}
.drawer-links{margin-top:18px;display:grid;gap:4px}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:14px;
  font-size:16px;color:var(--ink-2);transition:background-color .22s var(--ease),color .22s var(--ease);
}
.drawer-links a:hover,.drawer-links a.is-active{background:#F1EDE6;color:var(--jade)}
.drawer-cta{margin-top:18px;width:100%}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;
  padding:14px 28px;border-radius:999px;font-size:15px;font-weight:600;line-height:1;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),
    border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(255,122,77,.28)}
.btn-primary:hover{background:var(--coral-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1px solid var(--jade);color:var(--jade);background:transparent}
.btn-outline:hover{background:rgba(15,92,82,.08);transform:translateY(-1px)}
.btn-ghost{border:1px solid rgba(232,241,238,.44);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--jade);font-weight:600;font-size:15px;min-height:44px}
.btn-text .arw{transition:transform .22s var(--ease)}
.btn-text:hover .arw{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;height:25px;max-width:180px;padding:0 12px;border-radius:999px;
  background:#E4F0EC;color:var(--jade);font-size:12px;line-height:1;font-weight:600;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);border-color:rgba(15,92,82,.3)}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:88px 0}}
.section-alt{background:var(--alt)}
.sec-head{margin-bottom:32px;max-width:760px}
@media (min-width:768px){.sec-head{margin-bottom:48px}}
.sec-title{font-size:23px;line-height:1.45}
@media (min-width:768px){.sec-title{font-size:30px;line-height:1.35}}
.sec-desc{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.9;max-width:42em}
.sec-head-row{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:32px;
}
@media (min-width:768px){.sec-head-row{margin-bottom:44px}}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;background:var(--jade-ink);
  min-height:600px;display:flex;align-items:center;padding:130px 0 72px;
}
@media (min-width:768px){.hero{min-height:640px;padding:140px 0 88px}}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(104deg,rgba(10,43,39,.95) 0%,rgba(10,43,39,.80) 46%,rgba(10,43,39,.36) 100%);
}
.hero-grain{
  position:absolute;inset:0;opacity:.4;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:3px 3px;
}
.hero-inner{position:relative;z-index:2;display:grid;gap:40px;align-items:center}
@media (min-width:1024px){.hero-inner{grid-template-columns:1.06fr .94fr;gap:56px}}
.hero-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(232,241,238,.34);color:var(--d-ink-2);font-size:12px;letter-spacing:.06em;
}
.hero-title{margin-top:20px;color:#fff;font-size:30px;line-height:1.3}
@media (min-width:768px){.hero-title{font-size:40px;line-height:1.26}}
@media (min-width:1280px){.hero-title{font-size:44px}}
.hero-sub{margin-top:16px;color:var(--d-ink);font-size:17px;line-height:1.8}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-trust{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px 24px;font-size:13px;color:var(--d-ink-2)}
.hero-trust li{display:inline-flex;align-items:center;gap:8px;min-height:24px}
.tdot{width:6px;height:6px;border-radius:50%;background:var(--coral);flex:none}
.hero-media{
  position:relative;border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);
}
.hero-media img{width:100%;height:100%;object-fit:cover}

/* ============ 痛点区 ============ */
.pain-grid{display:grid;gap:32px}
@media (min-width:1024px){.pain-grid{grid-template-columns:4fr 8fr;gap:56px}}
.pain-intro{max-width:34em}
.pain-list{border-top:1px solid var(--line)}
.pain-list li{
  display:grid;grid-template-columns:auto 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
}
.pain-no{font-family:"Noto Serif SC",serif;font-size:20px;font-weight:700;color:var(--jade);line-height:1.5}
.pain-h{font-size:18px;line-height:1.55}
.pain-p{margin-top:6px;color:var(--ink-2);font-size:15px;line-height:1.85}

/* ============ 解决方案时间线 ============ */
.timeline{position:relative;padding-left:28px}
.timeline::before{
  content:"";position:absolute;left:6px;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--jade-light),rgba(15,92,82,.14));
}
.tl-item{position:relative;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-28px;top:12px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--jade);
}
.tl-body{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh);transition:border-color .22s var(--ease)}
.tl-body:hover{border-color:rgba(15,92,82,.3)}
.tl-step{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--jade);
  background:#E4F0EC;border-radius:999px;padding:3px 10px;line-height:1.6;
}
.tl-h{margin-top:12px;font-size:19px;line-height:1.5}
.tl-p{margin-top:8px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:46em}

/* ============ 数据带 ============ */
.band{
  background:var(--jade-ink);padding:56px 0;
  border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1);
}
@media (min-width:768px){.band{padding:84px 0}}
.band-h{color:#fff;font-size:23px;line-height:1.4;margin-bottom:32px}
@media (min-width:768px){.band-h{font-size:28px;margin-bottom:48px}}
.band-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px 24px}
@media (min-width:1024px){.band-grid{grid-template-columns:repeat(4,1fr)}}
.band-num{
  display:block;font-family:"Noto Serif SC",serif;font-weight:700;color:var(--coral);
  font-size:40px;line-height:1.15;
}
@media (min-width:768px){.band-num{font-size:46px}}
.band-cap{display:block;margin-top:10px;font-size:12px;line-height:1.75;color:var(--d-ink-2)}

/* ============ 客户证言 ============ */
.voice-grid{display:grid;gap:24px}
@media (min-width:900px){.voice-grid{grid-template-columns:1fr 1fr;gap:24px 28px}}
.voice-col{display:grid;gap:24px;align-content:start}
@media (min-width:900px){.voice-col-offset{margin-top:28px}}
.voice-card{padding:26px 24px;position:relative}
.voice-card::before{
  content:"“";position:absolute;top:2px;left:20px;line-height:1;font-size:54px;
  font-family:"Noto Serif SC",serif;color:rgba(15,92,82,.14);
}
.voice-text{position:relative;margin-top:28px;color:var(--ink-2);font-size:15px;line-height:1.9}
.voice-meta{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;gap:12px}
.voice-ava{
  width:40px;height:40px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:rgba(15,92,82,.1);color:var(--jade);font-weight:700;font-size:15px;
}
.voice-name{font-size:14px;font-weight:600;color:var(--ink);line-height:1.6}
.voice-role{font-size:12px;color:var(--ink-3);line-height:1.6}

/* ============ 内容列表 ============ */
.news-grid{display:grid;gap:24px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{padding:0;overflow:hidden}
.news-link{display:flex;flex-direction:column;height:100%}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:rgba(15,92,82,.08)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .22s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{
  margin-top:12px;font-size:18px;line-height:1.55;color:var(--jade-deep);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--jade)}
.news-sum{
  margin-top:8px;color:var(--ink-2);font-size:15px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--ink-3);
}
.news-time{font-family:"DIN Alternate",Menlo,monospace;letter-spacing:.02em}
.news-more{display:inline-flex;align-items:center;gap:4px;color:var(--jade);font-weight:600}
.news-card:hover .news-more .arw{transform:translateX(4px)}
.news-more .arw{transition:transform .22s var(--ease)}
.cms-empty{
  max-width:480px;margin:0 auto;text-align:center;padding:40px 28px;border-radius:var(--r-card);
  background:rgba(15,92,82,.08);color:var(--ink-2);font-size:15px;line-height:1.9;
}
.cms-empty .cms-ic{
  width:38px;height:38px;margin:0 auto 14px;border-radius:12px;display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);color:var(--jade);
}
.cms-empty .btn-text{margin-top:10px}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:0 22px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item[open]{border-color:rgba(15,92,82,.3);box-shadow:var(--sh)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;cursor:pointer;list-style:none;font-size:18px;font-weight:600;
  color:var(--ink);line-height:1.6;
}
.faq-q::-webkit-details-marker{display:none}
.faq-ic{position:relative;width:18px;height:18px;flex:none}
.faq-ic::before,.faq-ic::after{
  content:"";position:absolute;background:var(--jade);border-radius:2px;
  transition:transform .22s var(--ease);
}
.faq-ic::before{left:0;right:0;top:8px;height:2px}
.faq-ic::after{top:0;bottom:0;left:8px;width:2px}
.faq-item[open] .faq-ic::after{transform:scaleY(0)}
.faq-a{padding:0 0 22px;color:var(--ink-2);font-size:16px;line-height:1.9;max-width:52em}

/* ============ CTA ============ */
.cta{position:relative;overflow:hidden;background:var(--jade-ink);padding:72px 0}
@media (min-width:768px){.cta{padding:104px 0}}
.cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.3}
.cta-veil{position:absolute;inset:0;background:linear-gradient(118deg,rgba(10,43,39,.95),rgba(10,43,39,.72))}
.cta-inner{position:relative;z-index:2;max-width:760px;margin:0 auto;text-align:center}
.cta-h{color:#fff;font-size:26px;line-height:1.4}
@media (min-width:768px){.cta-h{font-size:34px}}
.cta-p{margin-top:16px;color:var(--d-ink-2);font-size:16px;line-height:1.9}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ============ 页脚 ============ */
.foot{background:var(--jade-ink);color:var(--d-ink-2);padding:64px 0 28px}
.foot-grid{display:grid;gap:36px}
@media (min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
.foot-logo{
  display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;
  font-family:"Noto Serif SC","Songti SC",serif;line-height:1.5;
}
.foot-desc{margin-top:16px;font-size:14px;line-height:1.85;color:var(--d-ink-2);max-width:34ch}
.foot-contact{margin-top:16px;display:grid;gap:6px;font-size:13px;line-height:1.8;color:var(--d-ink-2)}
.foot-h{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
.foot-links{display:grid;gap:10px}
.foot-links a{
  display:inline-block;font-size:14px;color:var(--d-ink-2);min-height:24px;
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.foot-links a:hover{color:#fff;transform:translateX(2px)}
.foot-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  font-size:12px;line-height:1.8;color:rgba(169,192,186,.82);
}

@media (max-width:520px){
  body{font-size:16px;line-height:1.9}
  .hero-title{font-size:26px}
  .sec-title{font-size:21px}
  .band-num{font-size:34px}
  .cta-h{font-size:23px}
  .hero{padding:118px 0 56px}
  .btn{padding:13px 22px;font-size:14px}
  .faq-q{font-size:16px}
}

/* roulang page: category1 */
:root{
  --brand:#0F5C52;
  --brand-deep:#0A3B35;
  --brand-light:#14786A;
  --night:#0A2B27;
  --accent:#FF7A4D;
  --accent-deep:#E8632F;
  --bg:#F7F4EF;
  --bg-alt:#F1EDE6;
  --card:#FFFFFF;
  --line:#E7E1D8;
  --ink:#1C1F1D;
  --ink-2:#5A605C;
  --ink-3:#8B918C;
  --on-dark:#E8F1EE;
  --on-dark-2:#A9C0BA;
  --r-card:16px;
  --r-img:14px;
  --r-btn:999px;
  --r-input:12px;
  --shadow:0 10px 28px rgba(10,43,39,.07);
  --shadow-hover:0 18px 40px rgba(10,43,39,.12);
  --ease:220ms cubic-bezier(.22,.61,.36,1);
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-ui:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --font-mono:'DIN Alternate',Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-ui);
  font-size:17px;
  line-height:1.95;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand)}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;margin:0;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(20,120,106,.55);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.sec{padding:88px 0}
.sec--alt{background:var(--bg-alt)}
.sec--white{background:var(--card)}
.sec-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.h2{font-size:30px;line-height:1.35;letter-spacing:.01em}
.h3{font-size:21px;line-height:1.5}
.lead{color:var(--ink-2);font-size:17px;line-height:1.95;margin-top:16px;max-width:42em}
.muted{color:var(--ink-2)}
.tiny{font-size:14px;line-height:1.7;color:var(--ink-3)}

/* 导航 */
.nav-shell{
  position:sticky;top:16px;z-index:50;
  width:100%;padding:0 20px;
}
.nav-pill{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:20px;
  padding:10px 12px 10px 20px;
  border-radius:999px;
  background:rgba(255,255,255,.82);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:17px;font-weight:700;
  color:var(--brand-deep);white-space:nowrap;
}
.nav-logo .mark{
  width:32px;height:32px;flex:0 0 32px;
  display:grid;place-items:center;
  border-radius:10px;background:var(--brand);color:#fff;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;
}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 0;font-size:15px;color:var(--ink-2);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;
  width:0;height:2px;background:var(--accent);
  transition:width var(--ease);
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-cta{flex:0 0 auto}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;
}
.burger-bar,.burger-bar::before,.burger-bar::after{
  display:block;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;
  transition:transform var(--ease),opacity var(--ease);
}
.burger-bar::before,.burger-bar::after{content:"";position:relative}
.burger-bar::before{top:-6px}
.burger-bar::after{top:4px}
.nav-burger[aria-expanded="true"] .burger-bar{background:transparent}
.nav-burger[aria-expanded="true"] .burger-bar::before{transform:translateY(6px) rotate(45deg)}
.nav-burger[aria-expanded="true"] .burger-bar::after{transform:translateY(-4px) rotate(-45deg)}

.nav-drawer{
  display:none;max-width:1200px;margin:12px auto 0;
  background:#fff;border:1px solid var(--line);border-radius:22px;
  box-shadow:var(--shadow);padding:20px 22px 24px;
}
.nav-drawer.is-open{display:block}
.nav-drawer ul{display:grid;gap:4px;margin-bottom:16px}
.nav-drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:10px 4px;font-size:16px;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.nav-drawer a.drawer-link.is-active{color:var(--brand);font-weight:600}
.nav-drawer .drawer-meta{font-size:13px;color:var(--ink-3);line-height:1.8}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(232,99,47,.22)}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(15,92,82,.35);color:var(--brand)}
.btn-ghost:hover{background:rgba(15,92,82,.08);color:var(--brand);transform:translateY(-1px)}
.btn-on-dark{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}
.btn-on-dark:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:15px;font-weight:600;
}
.text-link .arrow{transition:transform var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}

/* 页头 */
.page-hero{
  position:relative;overflow:hidden;
  padding:118px 0 78px;
  background:
    linear-gradient(120deg,rgba(10,43,39,.94) 0%,rgba(10,59,53,.86) 46%,rgba(15,92,82,.62) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:var(--on-dark);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:4px 4px;opacity:.5;
}
.page-hero .container{position:relative;z-index:2}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--on-dark-2);margin-bottom:26px;
}
.crumb a{color:var(--on-dark-2)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.6}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.page-hero h1{
  font-size:44px;line-height:1.25;color:#fff;letter-spacing:.01em;
}
.page-hero h1 .accent-line{display:block;color:#fff}
.hero-sub{
  margin-top:18px;font-size:19px;line-height:1.75;color:#DCEBE6;max-width:26em;
}
.hero-desc{
  margin-top:20px;font-size:16px;line-height:1.95;color:var(--on-dark-2);max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-facts li{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--on-dark-2);line-height:1.6;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:0 0 7px}
.hero-media{
  border-radius:18px;overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* 交错图文 */
.split{
  display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;
}
.split--flip{grid-template-columns:7fr 5fr}
.split--flip .split-media{order:2}
.split--flip .split-body{order:1}
.split-media{
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:rgba(15,92,82,.08);
  box-shadow:var(--shadow);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 320ms cubic-bezier(.22,.61,.36,1)}
.split-media:hover img{transform:scale(1.03)}
.split-body .h2{margin-bottom:10px}
.split-body p{color:var(--ink-2);margin-top:14px;max-width:40em}

.check-list{margin-top:24px;display:grid;gap:0}
.check-list li{
  display:grid;grid-template-columns:auto 1fr;gap:16px;
  padding:18px 0;border-top:1px solid var(--line);
}
.check-list li:last-child{border-bottom:1px solid var(--line)}
.check-num{
  font-family:var(--font-serif);font-size:20px;font-weight:700;
  color:var(--brand);line-height:1.4;min-width:34px;
}
.check-list h3{font-size:17px;font-family:var(--font-ui);font-weight:600;line-height:1.6;margin-bottom:4px}
.check-list p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0}

/* 步骤条 */
.steps{display:grid;gap:0;margin-top:8px}
.step{
  position:relative;padding:0 0 30px 34px;
  border-left:2px solid rgba(15,92,82,.25);
}
.step:last-child{border-left-color:transparent;padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-7px;top:6px;
  width:12px;height:12px;border-radius:50%;
  background:var(--brand);border:3px solid var(--bg);
}
.sec--alt .step::before{border-color:var(--bg-alt)}
.step .step-tag{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:var(--accent-deep);
}
.step h3{font-size:20px;margin:6px 0 8px;font-family:var(--font-serif)}
.step p{color:var(--ink-2);font-size:16px;max-width:38em}

/* 卡片 */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,92,82,.3)}
.card h3{font-size:19px;margin-bottom:8px}
.card p{font-size:15px;line-height:1.85;color:var(--ink-2)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card-grid--two{grid-template-columns:repeat(2,1fr)}

.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:#E4F0EC;color:var(--brand);
  font-size:12px;letter-spacing:.04em;
}
.badge--outline{background:transparent;border:1px solid rgba(255,255,255,.28);color:var(--on-dark)}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:rgba(15,92,82,.3);box-shadow:var(--shadow-hover)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:18px;font-weight:600;line-height:1.7;color:var(--ink);
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"＋";flex:0 0 auto;font-size:18px;color:var(--brand);
  transition:transform var(--ease);
}
.faq-item[open] summary::after{content:"－"}
.faq-item .faq-body{
  padding:0 24px 22px;font-size:16px;line-height:1.9;color:var(--ink-2);
}

/* 相关分类 */
.rel-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
.rel-item{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:44px;padding:18px 22px;border-radius:var(--r-card);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.rel-item:hover{transform:translateY(-2px);border-color:rgba(15,92,82,.3);box-shadow:var(--shadow-hover)}
.rel-item span.rel-name{font-weight:600;color:var(--brand-deep)}
.rel-item span.rel-arrow{color:var(--accent);font-family:var(--font-mono)}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;color:var(--on-dark);
  background:
    linear-gradient(115deg,rgba(10,43,39,.95),rgba(10,59,53,.9)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:88px 0;
}
.cta-band .inner{
  display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:center;
  position:relative;z-index:2;
}
.cta-band h2{font-size:32px;color:#fff;line-height:1.35}
.cta-band p{margin-top:14px;color:var(--on-dark-2);font-size:17px;max-width:38em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* 页脚 */
.site-footer{background:var(--night);color:var(--on-dark);padding:76px 0 0}
.foot-grid{display:grid;grid-template-columns:4fr 2.4fr 2.6fr 2.4fr;gap:44px}
.foot-brand .nav-logo{color:#fff}
.foot-brand .nav-logo .mark{background:var(--brand-light)}
.foot-brand p{margin-top:18px;font-size:15px;line-height:1.9;color:var(--on-dark-2);max-width:26em}
.foot-contact{margin-top:20px;font-size:14px;line-height:1.9;color:var(--on-dark-2)}
.foot-contact span{font-family:var(--font-mono);color:#fff}
.foot-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.foot-links{display:grid;gap:10px}
.foot-links a{font-size:14px;color:var(--on-dark-2);min-height:26px;display:inline-flex;align-items:center}
.foot-links a:hover{color:#fff}
.foot-bottom{
  margin-top:56px;padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--on-dark-2);
}
.foot-bottom span{font-family:var(--font-mono)}

@media (max-width:1024px){
  .container{padding:0 24px}
  .page-hero h1{font-size:38px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .split,.split--flip{grid-template-columns:1fr;gap:32px}
  .split--flip .split-media{order:0}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .rel-list{grid-template-columns:1fr}
  .cta-band .inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.9}
  .sec{padding:56px 0}
  .nav-menu,.nav-cta{display:none}
  .nav-burger{display:inline-flex;margin-left:auto}
  .nav-pill{padding:10px 12px 10px 16px;gap:12px}
  .nav-logo{font-size:15px}
  .page-hero{padding:92px 0 56px}
  .page-hero h1{font-size:30px}
  .hero-sub{font-size:17px}
  .h2{font-size:23px}
  .card-grid,.card-grid--two{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-bottom{justify-content:flex-start}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .page-hero h1{font-size:27px}
  .hero-facts{gap:14px;flex-direction:column}
  .faq-item summary{font-size:16px;padding:18px 18px}
  .faq-item .faq-body{padding:0 18px 20px}
  .btn{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: article */
:root{
  --primary:#0F5C52;
  --primary-dark:#0A3B35;
  --primary-light:#14786A;
  --deep:#0A2B27;
  --accent:#FF7A4D;
  --accent-dark:#E8632F;
  --bg:#F7F4EF;
  --bg-alt:#F1EDE6;
  --card:#FFFFFF;
  --border:#E7E1D8;
  --text:#1C1F1D;
  --text-2:#5A605C;
  --text-3:#8B918C;
  --light-text:#E8F1EE;
  --light-text-2:#A9C0BA;
  --badge:#E4F0EC;
  --radius:16px;
  --radius-img:14px;
  --shadow:0 10px 28px rgba(10,43,39,.07);
  --shadow-hover:0 18px 40px rgba(10,43,39,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --font-mono:'DIN Alternate','Menlo','Consolas',monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.95;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease);}
ul,ol{list-style:none;margin:0;padding:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;color:var(--primary-dark);}
p{margin:0 0 1em;}
:focus-visible{outline:3px solid rgba(20,120,106,.55);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* 导航 */
.nav-shell{position:sticky;top:14px;z-index:60;padding:0 20px;margin-bottom:6px;}
.nav-pill{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 18px;border-radius:999px;
  background:rgba(255,255,255,.86);
  border:1px solid var(--border);
  box-shadow:0 10px 28px rgba(10,43,39,.09);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.nav-logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--primary-dark);white-space:nowrap;min-height:44px;}
.nav-logo .mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--primary);color:#fff;font-family:var(--font-mono);font-size:13px;letter-spacing:.5px;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;font-size:15px;color:var(--text-2);white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:9px;height:2px;border-radius:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;line-height:1.4;white-space:nowrap;transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,77,.28);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--primary);border:1px solid rgba(15,92,82,.45);}
.btn-ghost:hover{background:rgba(15,92,82,.08);transform:translateY(-1px);}
.nav-cta{padding:10px 20px;font-size:14px;}
.nav-burger{display:none;width:44px;height:44px;border-radius:50%;align-items:center;justify-content:center;margin-left:auto;}
.burger-bar,.burger-bar::before,.burger-bar::after{display:block;width:20px;height:2px;border-radius:2px;background:var(--primary-dark);transition:background-color .22s var(--ease);}
.burger-bar{position:relative;}
.burger-bar::before,.burger-bar::after{content:"";position:absolute;left:0;}
.burger-bar::before{top:-6px;}
.burger-bar::after{top:6px;}

/* 移动端抽屉 */
.nav-drawer{position:fixed;inset:0;z-index:90;display:flex;justify-content:flex-end;background:rgba(10,43,39,.55);backdrop-filter:blur(4px);}
.nav-drawer[hidden]{display:none;}
.drawer-panel{width:min(340px,88vw);height:100%;background:#fff;padding:22px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-title{font-family:var(--font-serif);font-size:16px;font-weight:700;color:var(--primary-dark);}
.drawer-close{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--bg-alt);color:var(--primary-dark);font-size:22px;line-height:1;}
.drawer-menu{display:flex;flex-direction:column;gap:4px;}
.drawer-menu a{display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;font-size:16px;color:var(--text-2);}
.drawer-menu a:hover{background:var(--badge);color:var(--primary);}
.drawer-cta{width:100%;}
.drawer-tip{font-size:13px;line-height:1.7;color:var(--text-3);margin:0;}

/* 面包屑 */
.breadcrumb{margin:26px 0 24px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li+li::before{content:"/";color:#C6C4BC;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{display:inline-block;max-width:46vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-3);}

/* 文章头 */
.article-head{max-width:800px;margin:0 0 34px;}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--badge);color:var(--primary);font-size:12px;letter-spacing:.2px;font-family:var(--font-sans);}
.article-head h1{font-size:40px;line-height:1.3;letter-spacing:-.2px;margin:16px 0 18px;color:var(--primary-dark);}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;font-size:14px;color:var(--text-3);}
.article-meta time{font-family:var(--font-mono);letter-spacing:.3px;}
.article-meta .sep{width:4px;height:4px;border-radius:50%;background:#C9C7BF;display:inline-block;}

/* 布局 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start;}
.article-main{min-width:0;}
.article-body{max-width:760px;font-size:17px;line-height:1.95;color:var(--text);}
.article-body p{margin:0 0 1.4em;}
.article-body h2{position:relative;font-size:28px;line-height:1.35;margin:2em 0 .9em;padding-left:16px;}
.article-body h2::before{content:"";position:absolute;left:0;top:.24em;width:4px;height:.82em;border-radius:2px;background:var(--primary);}
.article-body h3{font-size:21px;line-height:1.5;margin:1.6em 0 .7em;}
.article-body blockquote{margin:1.4em 0;padding:20px 22px;border-left:4px solid var(--primary);background:var(--bg-alt);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-2);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 1.4em 1.5em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.6em;}
.article-body img{max-width:100%;height:auto;border-radius:var(--radius-img);margin:1.4em auto;}
.article-body figure{margin:1.4em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;line-height:1.7;margin-top:8px;}
.article-body a{color:var(--primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-dark);}
.article-body table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:1.4em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left;white-space:nowrap;}
.article-body th{background:var(--bg-alt);color:var(--primary-dark);}
.article-body strong{color:var(--primary-dark);}

/* 空态 */
.empty-state{max-width:480px;margin:0 auto;padding:38px 26px;border-radius:var(--radius);background:rgba(15,92,82,.08);display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;}
.empty-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;border:1px dashed rgba(15,92,82,.4);color:var(--primary);font-size:20px;}
.empty-state p{margin:0;font-size:15px;line-height:1.8;color:var(--text-2);}
.empty-state a{color:var(--primary);font-weight:600;text-decoration:underline;text-underline-offset:3px;}

/* 侧栏 */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.side-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);}
.side-title{font-size:16px;margin-bottom:14px;}
.side-list{display:flex;flex-direction:column;}
.side-list li+li{border-top:1px solid var(--border);}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;padding:6px 0;font-size:15px;color:var(--text-2);}
.side-list a:hover{color:var(--primary);}
.side-list a::after{content:"→";font-size:13px;color:var(--text-3);transition:transform .22s var(--ease),color .22s var(--ease);}
.side-list a:hover::after{transform:translateX(4px);color:var(--accent);}
.side-cta{background:var(--deep);border-color:rgba(255,255,255,.1);}
.side-cta .side-title{color:#fff;}
.side-cta p{font-size:14px;line-height:1.85;color:var(--light-text-2);margin-bottom:16px;}
.side-cta .btn{width:100%;background:var(--accent);color:#fff;}
.side-cta .btn:hover{background:var(--accent-dark);}

/* 标签 */
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:38px;padding-top:24px;border-top:1px solid var(--border);}
.tag-label{font-size:13px;color:var(--text-3);}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:var(--bg-alt);font-size:13px;color:var(--text-2);}
.tag:hover{background:var(--badge);color:var(--primary);}

/* 上下篇 */
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px;}
.post-nav-item{display:flex;flex-direction:column;gap:8px;padding:20px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);}
.post-nav-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,92,82,.3);}
.post-nav-label{font-size:13px;color:var(--text-3);}
.post-nav-title{font-family:var(--font-serif);font-size:17px;line-height:1.55;color:var(--primary-dark);}
.post-nav-item.next{text-align:right;align-items:flex-end;}
.post-nav-item.next:hover .post-nav-title{color:var(--primary);}

/* 相关推荐 */
.related-section{margin-top:64px;padding-top:44px;border-top:1px solid var(--border);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:28px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--primary);}
.text-link .arrow{transition:transform .22s var(--ease);}
.text-link:hover .arrow{transform:translateX(4px);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,92,82,.3);}
.card-thumb{aspect-ratio:16/9;background:rgba(15,92,82,.08);overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{margin:0;font-size:15px;line-height:1.8;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-3);}
.card-meta .card-date{font-family:var(--font-mono);letter-spacing:.3px;}
.card:hover .card-meta span:last-child{color:var(--primary);}

/* 返回列表 */
.back-home{display:flex;justify-content:center;margin:48px 0 76px;}

/* 页脚 */
.site-footer{background:var(--deep);color:var(--light-text-2);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:18px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-logo .mark{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--accent);color:#fff;font-family:var(--font-mono);font-size:13px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--light-text-2);max-width:320px;margin-bottom:16px;}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--light-text-2);}
.footer-col h4{font-family:var(--font-serif);font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--light-text-2);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:rgba(232,241,238,.6);}

/* 响应式 */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-box{flex:1 1 260px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.9;}
  .container{padding:0 20px;}
  .nav-shell{padding:0 14px;}
  .nav-menu,.nav-cta{display:none;}
  .nav-burger{display:inline-flex;}
  .article-head h1{font-size:30px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:23px;}
  .article-body h3{font-size:19px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .post-nav-item.next{text-align:left;align-items:flex-start;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .breadcrumb .current{max-width:56vw;}
  .back-home{margin:38px 0 56px;}
}
@media (max-width:520px){
  .nav-logo{font-size:14px;gap:8px;}
  .nav-logo .mark{width:30px;height:30px;font-size:12px;}
  .article-head h1{font-size:26px;}
  .article-meta{font-size:13px;}
  .side-box{padding:18px;}
}

/* roulang page: category2 */
:root{
  --brand:#0F5C52;
  --brand-deep:#0A3B35;
  --brand-bright:#14786A;
  --brand-ink:#0A2B27;
  --accent:#FF7A4D;
  --accent-deep:#E8632F;
  --bg:#F7F4EF;
  --bg-alt:#F1EDE6;
  --card:#FFFFFF;
  --line:#E7E1D8;
  --text:#1C1F1D;
  --text-2:#5A605C;
  --text-3:#8B918C;
  --dark-text:#E8F1EE;
  --dark-text-2:#A9C0BA;
  --badge-bg:#E4F0EC;
  --radius-card:16px;
  --radius-img:14px;
  --radius-input:12px;
  --shadow:0 10px 28px rgba(10,43,39,.07);
  --shadow-hover:0 18px 40px rgba(10,43,39,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --mono:'DIN Alternate','Menlo',monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.95;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color 220ms var(--ease);}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;margin:0;color:var(--text);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(20,120,106,.55);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-alt{background:var(--bg-alt);}
.section-white{background:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--brand);
  text-transform:uppercase;font-family:var(--mono);margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);display:block;}
.section-title{font-size:30px;line-height:1.35;margin-bottom:14px;}
.section-lead{color:var(--text-2);font-size:17px;max-width:720px;}

/* ---------- 导航 ---------- */
.nav-shell{
  position:sticky;top:16px;z-index:50;
  padding:0 20px;
}
.nav-pill{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:999px;
  padding:10px 12px 10px 22px;
  box-shadow:0 10px 28px rgba(10,43,39,.08);
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  font-family:var(--serif);font-size:17px;font-weight:600;
  color:var(--brand-ink);white-space:nowrap;
}
.nav-logo .mark{
  width:34px;height:34px;flex:none;
  display:grid;place-items:center;
  background:var(--brand);color:#fff;
  border-radius:10px;font-family:var(--mono);font-size:13px;letter-spacing:.02em;
}
.nav-menu{
  display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:nowrap;
}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;color:var(--text-2);white-space:nowrap;
  border-radius:999px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform 220ms var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{margin-left:6px;padding:12px 22px;font-size:15px;white-space:nowrap;}
.nav-burger{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  place-items:center;
}
.burger-bar,.burger-bar::before,.burger-bar::after{
  display:block;width:18px;height:2px;background:var(--brand-ink);border-radius:2px;position:relative;
}
.burger-bar::before,.burger-bar::after{content:"";position:absolute;left:0;}
.burger-bar::before{top:-6px;}
.burger-bar::after{top:6px;}
.nav-drawer{
  display:none;max-width:1200px;margin:12px auto 0;
  background:rgba(255,255,255,.96);
  border:1px solid var(--line);border-radius:24px;
  padding:20px;box-shadow:var(--shadow-hover);
}
.nav-drawer.is-open{display:block;}
.nav-drawer ul{display:grid;gap:6px;margin-bottom:16px;}
.nav-drawer a{
  display:block;padding:14px 16px;border-radius:12px;font-size:16px;color:var(--text-2);
}
.nav-drawer a:hover,.nav-drawer a.is-active{background:var(--badge-bg);color:var(--brand);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-size:16px;font-weight:600;
  transition:all 220ms var(--ease);min-height:48px;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(232,99,47,.26);}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid rgba(15,92,82,.45);}
.btn-ghost:hover{background:rgba(15,92,82,.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-link{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;padding:8px 0;}
.btn-link .arrow{transition:transform 220ms var(--ease);}
.btn-link:hover .arrow{transform:translateX(4px);}

/* ---------- 标签与徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--badge-bg);color:var(--brand);
  font-size:12px;letter-spacing:.02em;
}
.badge-outline{
  background:transparent;border:1px solid rgba(255,255,255,.28);color:var(--dark-text);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--text-2);
}

/* ---------- 页头 ---------- */
.page-head{
  padding:56px 0 72px;
  background:
    radial-gradient(120% 80% at 85% 10%, rgba(15,92,82,.10) 0%, rgba(247,244,239,0) 62%),
    linear-gradient(180deg,#FFFFFF 0%, var(--bg) 68%);
  border-bottom:1px solid var(--line);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.page-head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.page-head h1{font-size:44px;line-height:1.25;margin-bottom:18px;}
.page-head h1 .hl{color:var(--brand);}
.page-head .lead{font-size:17px;color:var(--text-2);max-width:640px;}
.head-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.head-visual{position:relative;}
.head-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-hover);
}
.head-visual .cap{
  position:absolute;left:16px;bottom:16px;
  background:rgba(10,43,39,.86);color:var(--dark-text);
  padding:10px 16px;border-radius:999px;font-size:13px;
  border:1px solid rgba(255,255,255,.14);
}

/* ---------- 编号清单 ---------- */
.step-list{display:grid;gap:0;border-top:1px solid var(--line);margin-top:44px;}
.step-item{
  display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:background 220ms var(--ease);
}
.step-item:hover{background:rgba(15,92,82,.035);}
.step-num{
  font-family:var(--serif);font-size:34px;line-height:1;color:var(--brand);
  letter-spacing:.02em;
}
.step-item h3{font-size:21px;margin-bottom:8px;}
.step-item p{color:var(--text-2);font-size:16px;margin:0;}
.step-item .mini{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 对照表 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:40px;}
.compare-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow);
  transition:all 220ms var(--ease);
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,92,82,.3);}
.compare-card h3{font-size:20px;display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.compare-card .dot{width:10px;height:10px;border-radius:50%;background:var(--brand);flex:none;}
.compare-card .dot.warn{background:var(--accent);}
.compare-card .sum{font-size:14px;color:var(--text-3);margin-bottom:18px;}
.compare-list li{
  padding:14px 0;border-top:1px solid var(--line);
  font-size:15px;color:var(--text-2);display:flex;gap:12px;align-items:flex-start;
}
.compare-list li:first-child{border-top:none;padding-top:4px;}
.compare-list li strong{color:var(--text);font-weight:600;display:block;font-size:15px;margin-bottom:2px;font-family:var(--sans);}
.compare-list li span.idx{
  font-family:var(--mono);font-size:12px;color:var(--brand);flex:none;
  width:22px;height:22px;border-radius:50%;background:var(--badge-bg);
  display:grid;place-items:center;margin-top:3px;
}

/* ---------- 卡片矩阵 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:all 220ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,92,82,.3);}
.card-media{overflow:hidden;background:rgba(15,92,82,.08);}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 320ms var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:20px;line-height:1.5;}
.card-body p{font-size:15px;line-height:1.85;color:var(--text-2);margin:0;}
.card-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);
}
.card-foot .time{font-family:var(--mono);}

/* ---------- 深色数据带 ---------- */
.dark-band{background:var(--brand-ink);color:var(--dark-text);}
.dark-band .section-title{color:#fff;}
.dark-band .section-lead{color:var(--dark-text-2);}
.data-row{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:48px;}
.data-item{border-top:1px solid rgba(255,255,255,.10);padding-top:24px;}
.data-num{font-family:var(--serif);font-size:42px;line-height:1;color:var(--accent);margin-bottom:10px;}
.data-cap{font-size:12px;color:var(--dark-text-2);line-height:1.7;letter-spacing:.02em;}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:40px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:24px 44px 24px 0;position:relative;
  font-size:18px;font-weight:600;color:var(--text);
  transition:color 220ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"";position:absolute;right:10px;top:50%;width:12px;height:12px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);transition:transform 220ms var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
.faq-item .faq-a{padding:0 60px 26px 0;color:var(--text-2);font-size:16px;line-height:1.9;}

/* ---------- 相关分类 ---------- */
.rel-row{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;
}
.rel-link{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:15px;color:var(--text-2);box-shadow:var(--shadow);
  transition:all 220ms var(--ease);min-height:48px;
}
.rel-link:hover{color:var(--brand);border-color:rgba(15,92,82,.35);transform:translateY(-2px);}
.rel-link .idx{font-family:var(--mono);font-size:12px;color:var(--accent);}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(135deg, rgba(10,43,39,.94) 0%, rgba(15,92,82,.92) 100%),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:var(--dark-text);
}
.cta-inner{padding:88px 0;display:grid;gap:26px;justify-items:start;}
.cta-inner h2{color:#fff;font-size:32px;line-height:1.35;}
.cta-inner p{color:var(--dark-text-2);max-width:640px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-ink);color:var(--dark-text);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:72px 0 40px;
}
.footer-brand .brand-line{
  display:flex;align-items:center;gap:10px;font-family:var(--serif);
  font-size:18px;color:#fff;margin-bottom:16px;
}
.footer-brand .brand-line .mark{
  width:34px;height:34px;display:grid;place-items:center;border-radius:10px;
  background:var(--brand-bright);color:#fff;font-family:var(--mono);font-size:13px;
}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--dark-text-2);max-width:320px;}
.footer-contact{margin-top:18px;display:grid;gap:8px;font-size:14px;color:var(--dark-text-2);}
.footer-contact span{display:flex;gap:8px;align-items:center;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:18px;font-family:var(--sans);font-weight:600;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:14px;color:var(--dark-text-2);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 34px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--dark-text-2);
}
.footer-bottom .mono{font-family:var(--mono);letter-spacing:.02em;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .page-head h1{font-size:36px;}
  .page-head-grid{grid-template-columns:1fr;gap:34px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .data-row{grid-template-columns:repeat(2,1fr);gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-menu{display:none;}
  .nav-cta{display:none;}
  .nav-burger{display:grid;}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.9;}
  .section{padding:56px 0;}
  .section-title{font-size:23px;}
  .page-head{padding:36px 0 52px;}
  .page-head h1{font-size:30px;}
  .step-item{grid-template-columns:1fr;gap:12px;padding:24px 0;}
  .step-num{font-size:26px;}
  .compare-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .data-row{grid-template-columns:1fr 1fr;}
  .data-num{font-size:34px;}
  .cta-inner{padding:60px 0;}
  .cta-inner h2{font-size:24px;}
  .faq-item summary{font-size:17px;padding-right:36px;}
  .faq-item .faq-a{padding-right:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:52px 0 28px;}
  .nav-pill{padding:8px 10px 8px 16px;}
  .nav-logo{font-size:15px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .nav-logo span:last-child{max-width:170px;overflow:hidden;text-overflow:ellipsis;}
  .data-row{grid-template-columns:1fr;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .rel-row{flex-direction:column;}
  .rel-link{width:100%;justify-content:space-between;}
}

/* roulang page: category3 */
:root{
  --brand:#0F5C52;
  --brand-deep:#0A3B35;
  --brand-light:#14786A;
  --night:#0A2B27;
  --accent:#FF7A4D;
  --accent-dark:#E8632F;
  --bg:#F7F4EF;
  --bg-alt:#F1EDE6;
  --card:#FFFFFF;
  --line:#E7E1D8;
  --ink:#1C1F1D;
  --ink-2:#5A605C;
  --ink-3:#8B918C;
  --deep-ink:#E8F1EE;
  --deep-ink-2:#A9C0BA;
  --r-card:16px;
  --r-img:14px;
  --r-pill:999px;
  --r-input:12px;
  --sh:0 10px 28px rgba(10,43,39,.07);
  --sh-hover:0 18px 40px rgba(10,43,39,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  --mono:'DIN Alternate',Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

.page-body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.95;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

.page-body img{max-width:100%;display:block;height:auto;}
.page-body a{color:inherit;text-decoration:none;transition:color 220ms var(--ease);}
.page-body ul,.page-body ol{margin:0;padding:0;list-style:none;}
.page-body button{font-family:inherit;cursor:pointer;border:0;}
.page-body h1,.page-body h2,.page-body h3,.page-body h4{
  margin:0;
  font-family:var(--serif);
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
}

.page-body :focus-visible{
  outline:3px solid rgba(15,92,82,.55);
  outline-offset:3px;
  border-radius:6px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

.section{padding:56px 0;}
.section-alt{background:var(--bg-alt);}
.section-white{background:#fff;}

.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:23px;line-height:1.4;margin-bottom:12px;}
.section-head p{color:var(--ink-2);font-size:16px;line-height:1.9;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand);font-family:var(--mono);margin-bottom:14px;
}
.eyebrow::before{content:'';width:22px;height:2px;background:var(--accent);border-radius:2px;}

/* ---------- 悬浮胶囊导航 ---------- */
.nav-shell{
  position:sticky;
  top:16px;
  z-index:60;
  padding:0 20px;
}
.nav-pill{
  display:flex;
  align-items:center;
  gap:18px;
  max-width:1200px;
  margin:0 auto;
  padding:8px 12px 8px 16px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh);
}
.nav-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-size:16px;
  font-weight:700;
  color:var(--brand-deep);
  white-space:nowrap;
  min-height:44px;
}
.nav-logo .mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;height:32px;
  border-radius:9px;
  background:var(--brand);
  color:#fff;
  font-family:var(--mono);
  font-size:14px;
  letter-spacing:.02em;
}
.nav-menu{
  display:none;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:var(--r-pill);
}
.nav-link::after{
  content:'';
  position:absolute;
  left:14px;right:14px;bottom:8px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 220ms var(--ease);
}
.nav-link:hover{color:var(--brand);background:rgba(15,92,82,.06);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{display:none;}
.nav-burger{
  margin-left:auto;
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-pill);
  background:rgba(15,92,82,.08);
  transition:background 220ms var(--ease);
}
.nav-burger:hover{background:rgba(15,92,82,.16);}
.burger-bar,
.burger-bar::before,
.burger-bar::after{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--brand);
  transition:transform 220ms var(--ease),opacity 220ms var(--ease);
}
.burger-bar{position:relative;}
.burger-bar::before,
.burger-bar::after{content:'';position:absolute;left:0;}
.burger-bar::before{top:-6px;}
.burger-bar::after{top:6px;}
.nav-burger[aria-expanded="true"] .burger-bar{background:transparent;}
.nav-burger[aria-expanded="true"] .burger-bar::before{transform:translateY(6px) rotate(45deg);}
.nav-burger[aria-expanded="true"] .burger-bar::after{transform:translateY(-6px) rotate(-45deg);}

.nav-drawer{
  position:fixed;
  inset:0;
  z-index:70;
  display:none;
  background:rgba(10,43,39,.96);
  padding:28px 20px 40px;
  overflow-y:auto;
}
.nav-drawer.is-open{display:block;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:32px;
}
.drawer-brand{
  font-family:var(--serif);
  font-size:17px;
  font-weight:700;
  color:#fff;
  display:flex;
  align-items:center;
  gap:10px;
}
.drawer-brand .mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;
  background:var(--accent);color:#fff;font-family:var(--mono);font-size:14px;
}
.drawer-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);
  color:#fff;
  font-size:20px;
  line-height:1;
}
.drawer-close:hover{background:rgba(255,255,255,.22);}
.drawer-list{display:flex;flex-direction:column;gap:6px;}
.drawer-list a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 18px;
  border-radius:14px;
  color:var(--deep-ink);
  font-size:17px;
  border:1px solid rgba(255,255,255,.10);
}
.drawer-list a:hover{background:rgba(255,255,255,.08);color:#fff;}
.drawer-list a.is-active{color:#fff;border-color:rgba(255,122,77,.6);background:rgba(255,122,77,.14);}
.drawer-foot{margin-top:28px;display:flex;flex-direction:column;gap:14px;}
.drawer-foot p{color:var(--deep-ink-2);font-size:14px;margin:0;line-height:1.8;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  font-family:var(--sans);
  transition:transform 220ms var(--ease),background-color 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease);
  border:1px solid transparent;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(15,92,82,.38);}
.btn-ghost:hover{background:rgba(15,92,82,.08);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  color:var(--brand);
  font-size:15px;
  font-weight:600;
}
.btn-text .arrow{transition:transform 220ms var(--ease);}
.btn-text:hover{color:var(--brand-light);text-decoration:underline;text-underline-offset:3px;}
.btn-text:hover .arrow{transform:translateX(4px);}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:#E4F0EC;
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-ghost{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.30);
  color:var(--deep-ink);
}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  font-size:13px;
}
.tag:hover{border-color:rgba(15,92,82,.35);color:var(--brand);}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  padding:20px 0 0;
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:'/';color:var(--line);}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  margin-top:22px;
  padding:56px 0 60px;
  background-image:
    linear-gradient(120deg,rgba(10,43,39,.94) 0%,rgba(10,43,39,.86) 45%,rgba(10,59,53,.72) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  color:var(--deep-ink);
  border-radius:26px;
  overflow:hidden;
}
.page-head-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
.page-head h1{
  color:#fff;
  font-size:30px;
  line-height:1.32;
  margin:16px 0 18px;
}
.page-head-lead{
  color:var(--deep-ink-2);
  font-size:16px;
  line-height:1.95;
  margin:0 0 14px;
  max-width:620px;
}
.page-head-lead strong{color:#fff;font-weight:600;}
.page-head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.head-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
}
.head-facts li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--deep-ink-2);
}
.head-facts .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;}
.page-head-media{position:relative;}
.page-head-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid rgba(255,255,255,.14);
}
.head-float{
  position:absolute;
  left:18px;
  bottom:18px;
  right:18px;
  padding:16px 18px;
  border-radius:14px;
  background:rgba(10,43,39,.86);
  border:1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.head-float p{margin:0;font-size:13px;line-height:1.8;color:var(--deep-ink-2);}
.head-float b{display:block;color:#fff;font-size:15px;font-family:var(--mono);margin-bottom:4px;}

/* ---------- 卡片矩阵 ---------- */
.grid-cards{display:grid;grid-template-columns:1fr;gap:24px;}
.card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  overflow:hidden;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-hover);
  border-color:rgba(15,92,82,.3);
}
.card-media{
  position:relative;
  overflow:hidden;
  background:rgba(15,92,82,.08);
  aspect-ratio:16/9;
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 220ms var(--ease);
}
.card:hover .card-media img{transform:scale(1.03);}
.card-media .badge{position:absolute;left:14px;top:14px;z-index:2;background:rgba(255,255,255,.92);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:20px;line-height:1.5;margin-bottom:10px;}
.card-body p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.8;}
.card-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.card-foot span{font-size:13px;color:var(--ink-3);font-family:var(--mono);}
.card-foot a{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.card-foot a:hover{text-decoration:underline;text-underline-offset:3px;}
.card-foot a .arrow{transition:transform 220ms var(--ease);}
.card-foot a:hover .arrow{transform:translateX(4px);}

/* ---------- 时间线 ---------- */
.tl{position:relative;}
.tl::before{
  content:'';
  position:absolute;
  left:23px;top:14px;bottom:34px;
  width:1px;
  background:rgba(15,92,82,.24);
}
.tl-item{display:flex;gap:22px;padding-bottom:32px;position:relative;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:relative;
  z-index:1;
  flex:0 0 48px;
  height:48px;
  border-radius:50%;
  background:#fff;
  border:1px solid rgba(15,92,82,.3);
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--mono);
  font-size:15px;
  font-weight:700;
  box-shadow:var(--sh);
}
.tl-body{flex:1;padding-top:2px;}
.tl-body h3{font-size:20px;line-height:1.5;margin-bottom:8px;}
.tl-body p{margin:0 0 10px;color:var(--ink-2);font-size:16px;line-height:1.9;}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;}
.tl-meta span{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);
  background:var(--bg-alt);
  color:var(--ink-2);
  font-size:12px;
}

/* ---------- 检查清单 ---------- */
.check-layout{display:grid;grid-template-columns:1fr;gap:32px;}
.check-aside h2{font-size:23px;line-height:1.4;margin-bottom:12px;}
.check-aside p{color:var(--ink-2);font-size:16px;line-height:1.9;margin:0 0 18px;}
.check-list li{
  display:flex;
  gap:18px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.check-list li:first-child{padding-top:0;}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-num{
  flex:0 0 42px;
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
  color:var(--brand);
  padding-top:3px;
}
.check-list h3{font-size:18px;line-height:1.5;margin-bottom:6px;}
.check-list p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.85;}

/* ---------- 深色数据带 ---------- */
.stat-band{
  background:var(--night);
  color:var(--deep-ink);
  padding:56px 0;
}
.stat-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.stat-item{border-top:1px solid rgba(255,255,255,.10);padding-top:20px;}
.stat-num{
  font-family:var(--serif);
  font-size:40px;
  line-height:1.1;
  color:var(--accent);
  margin-bottom:10px;
}
.stat-item p{margin:0;font-size:13px;line-height:1.8;color:var(--deep-ink-2);}

/* ---------- FAQ ---------- */
.faq details{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:0 22px;
  margin-bottom:14px;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq details:hover{border-color:rgba(15,92,82,.3);box-shadow:var(--sh);}
.faq summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 0;
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
}
.faq summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:50%;
  background:#E4F0EC;
  color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;
  transition:transform 220ms var(--ease),background-color 220ms var(--ease);
}
.faq details[open] .faq-icon{transform:rotate(45deg);background:var(--accent);color:#fff;}
.faq .faq-answer{
  margin:0;
  padding:0 0 22px;
  color:var(--ink-2);
  font-size:16px;
  line-height:1.9;
  max-width:760px;
}

/* ---------- 相关分类 ---------- */
.related-list{display:grid;grid-template-columns:1fr;gap:18px;}
.related-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.related-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(15,92,82,.3);}
.related-item strong{display:block;font-family:var(--serif);font-size:18px;font-weight:700;}
.related-item span{display:block;font-size:14px;color:var(--ink-3);margin-top:4px;}
.related-item .arrow{color:var(--brand);font-size:18px;transition:transform 220ms var(--ease);}
.related-item:hover .arrow{transform:translateX(4px);}

/* ---------- 底部 CTA ---------- */
.cta{
  position:relative;
  padding:64px 0;
  background-image:
    linear-gradient(110deg,rgba(10,43,39,.95),rgba(15,92,82,.78)),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
}
.cta-inner{max-width:720px;}
.cta h2{color:#fff;font-size:23px;line-height:1.4;margin-bottom:14px;}
.cta p{color:var(--deep-ink-2);font-size:16px;line-height:1.9;margin:0 0 28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--night);
  color:var(--deep-ink-2);
  padding:60px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:44px;}
.footer-brand .nav-logo{color:#fff;margin-bottom:16px;}
.footer-brand .nav-logo .mark{background:var(--accent);}
.footer-brand p{font-size:14px;line-height:1.9;margin:0 0 18px;max-width:340px;}
.footer-contact li{font-size:13px;line-height:2;font-family:var(--mono);color:var(--deep-ink-2);}
.footer-col h3{
  color:#fff;
  font-size:15px;
  font-family:var(--sans);
  font-weight:600;
  margin:0 0 16px;
  letter-spacing:.04em;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--deep-ink-2);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  color:var(--deep-ink-2);
  font-family:var(--mono);
}
.footer-bottom p{margin:0;}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .page-body{font-size:17px;}
  .section{padding:64px 0;}
  .grid-cards{grid-template-columns:repeat(2,1fr);}
  .related-list{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .page-head{padding:64px 0 68px;}
}

@media (min-width:768px){
  .container{padding-left:32px;padding-right:32px;}
  .nav-shell{padding:0 32px;}
  .page-head h1{font-size:38px;}
  .section{padding:80px 0;}
  .section-head h2{font-size:28px;}
  .check-aside h2{font-size:28px;}
  .cta h2{font-size:28px;}
  .faq summary{font-size:18px;}
}

@media (min-width:1024px){
  .nav-menu{display:flex;}
  .nav-cta{display:inline-flex;}
  .nav-burger{display:none;}
  .nav-drawer{display:none !important;}
  .page-head{padding:76px 0 80px;}
  .page-head-grid{grid-template-columns:7fr 5fr;gap:48px;}
  .page-head h1{font-size:42px;}
  .grid-cards{grid-template-columns:repeat(3,1fr);}
  .related-list{grid-template-columns:repeat(3,1fr);}
  .stat-grid{grid-template-columns:repeat(4,1fr);}
  .check-layout{grid-template-columns:4fr 8fr;gap:56px;}
  .check-aside{position:sticky;top:104px;align-self:start;}
  .section{padding:88px 0;}
}

@media (min-width:1280px){
  .page-head h1{font-size:44px;}
}