/* roulang page: index */
:root{
  --ink-900:#101216;
  --ink-700:#22262D;
  --ink-500:#4B5159;
  --paper:#F7F6F3;
  --surface:#FFFFFF;
  --steel:#E6E8EB;
  --accent:#C7F04A;
  --accent-ink:#12160F;
  --alert:#E4573D;
  --radius-card:14px;
  --radius-img:12px;
  --radius-input:10px;
  --radius-btn:999px;
  --shadow-hover:0 18px 40px rgba(16,18,22,.10);
  --shadow-soft:0 8px 22px rgba(16,18,22,.06);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --mono:"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --bs-body-bg:var(--paper);
  --bs-body-color:var(--ink-700);
  --bs-border-color:var(--steel);
  --bs-primary:#C7F04A;
  --bs-link-color:var(--ink-700);
  --bs-link-hover-color:var(--ink-900);
  --bs-font-sans-serif:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .28s var(--ease)}
a:hover{color:var(--ink-900)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:22px;padding-right:22px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--dark{background:var(--ink-900);color:#EAECEE}
.section--paper{background:var(--paper)}
.section--surface{background:var(--surface)}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-500);font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:10px;height:10px;background:var(--accent);border-radius:2px;display:block}
.section--dark .eyebrow{color:#9AA1A9}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{
  font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.15;
  letter-spacing:-.01em;color:var(--ink-900);
}
.section--dark .sec-head h2{color:#fff}
.sec-head p{margin-top:14px;color:var(--ink-500);font-size:16px}
.section--dark .sec-head p{color:#9AA1A9}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- 公告条 ---------- */
.announce{background:var(--ink-900);color:#D7DBDF;font-size:13px;height:38px;display:flex;align-items:center}
.announce-inner{display:flex;align-items:center;gap:12px;justify-content:center;flex-wrap:nowrap;overflow:hidden}
.announce p{margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.announce-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:0 0 auto;box-shadow:0 0 0 4px rgba(199,240,74,.16)}
.announce a{color:var(--accent);font-weight:600;white-space:nowrap}
.announce a:hover{color:#DDFA85}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.86);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.site-header.is-scrolled{background:var(--surface);border-bottom-color:var(--steel);box-shadow:0 6px 24px rgba(16,18,22,.06)}
.nav-shell{display:flex;align-items:center;gap:14px;min-height:72px}
.site-header.is-scrolled .nav-shell{min-height:64px}
.nav-group{display:flex;align-items:center;gap:4px;flex:1 1 0}
.nav-group--left{justify-content:flex-start}
.nav-group--right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;
  transition:color .26s var(--ease),background .26s var(--ease);
}
.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 .26s var(--ease);
}
.nav-link:hover{color:var(--ink-900);background:rgba(16,18,22,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--ink-900);font-weight:700}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 10px;border-radius:12px}
.brand-mark{width:34px;height:34px;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text b{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.brand-text span{font-size:11px;letter-spacing:.22em;color:var(--ink-500);font-weight:600}
.nav-toggle{display:none;border:1px solid var(--steel);background:var(--surface);width:42px;height:42px;border-radius:10px;color:var(--ink-900);font-size:16px;align-items:center;justify-content:center}
.nav-toggle:hover{border-color:var(--ink-900)}
.nav-cta{padding:10px 20px;font-size:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  border-radius:var(--radius-btn);border:1px solid transparent;
  padding:13px 26px;font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;transition:transform .32s var(--ease),box-shadow .32s var(--ease),background .32s var(--ease),color .32s var(--ease),border-color .32s var(--ease);
}
.btn .arw{transition:transform .32s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:translateY(0) !important}
.btn-accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-accent:hover{background:#D3F76A;color:var(--accent-ink);transform:translateY(-2px);box-shadow:0 14px 30px rgba(199,240,74,.34)}
.btn-ink{background:var(--ink-900);color:#fff;border-color:var(--ink-900)}
.btn-ink:hover{background:#000;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:rgba(16,18,22,.22)}
.btn-ghost:hover{border-color:var(--ink-900);transform:translateY(-2px);color:var(--ink-900)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost-light:hover{color:#fff;border-color:#fff;transform:translateY(-2px)}
.btn-block{width:100%}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:78px 0 0}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  transform:scale(1.04);opacity:.55;
}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,18,22,.94) 0%,rgba(16,18,22,.82) 46%,rgba(16,18,22,.62) 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center;padding-bottom:72px}
.hero-copy{grid-column:span 7}
.hero-visual{grid-column:span 5}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);border:1px solid rgba(255,255,255,.16);box-shadow:0 30px 60px rgba(0,0,0,.45)}
.hero-copy .tag{
  display:inline-block;background:rgba(199,240,74,.14);border:1px solid rgba(199,240,74,.42);
  color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.08em;
  padding:6px 14px;border-radius:4px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(34px,5vw,62px);font-weight:800;line-height:1.06;letter-spacing:-.01em;
  color:#fff;margin-bottom:20px;
}
.hero-sub{font-size:17px;line-height:1.8;color:#C3C8CD;max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid rgba(255,255,255,.14);padding-top:26px}
.hero-stat{padding-right:20px;border-right:1px solid rgba(255,255,255,.12)}
.hero-stat:last-child{border-right:0}
.hero-stat b{display:block;font-family:var(--mono);font-size:clamp(24px,2.6vw,34px);font-weight:700;color:var(--accent);line-height:1.1}
.hero-stat span{display:block;font-size:13px;color:#9AA1A9;margin-top:8px}
.hero-bar{position:relative;z-index:3;margin-top:-1px;background:var(--surface);border-top:1px solid var(--steel)}
.hero-bar-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;padding:20px 0}
.hero-bar-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-500);font-weight:500}
.hero-bar-item i{color:var(--ink-900);font-size:15px}

/* ---------- 信任条 ---------- */
.trust{background:var(--surface);border-bottom:1px solid var(--steel)}
.trust-inner{display:flex;flex-wrap:wrap;align-items:stretch;padding:26px 0}
.trust-item{flex:1 1 0;display:flex;align-items:center;gap:12px;padding:0 22px;border-right:1px solid var(--steel);min-width:190px}
.trust-item:first-child{padding-left:0}
.trust-item:last-child{border-right:0;padding-right:0}
.trust-item i{font-size:19px;color:var(--ink-900)}
.trust-item b{display:block;font-size:14.5px;font-weight:700;color:var(--ink-900);line-height:1.4}
.trust-item span{display:block;font-size:12.5px;color:var(--ink-500);line-height:1.4}

/* ---------- 阶梯 ---------- */
.ladders{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:end}
.ladder{
  background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  padding:26px 24px;display:flex;flex-direction:column;gap:16px;
  transition:border-color .32s var(--ease),box-shadow .32s var(--ease),transform .32s var(--ease);
}
.ladder:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.ladder:nth-child(1){min-height:280px}
.ladder:nth-child(2){min-height:316px}
.ladder:nth-child(3){min-height:352px}
.ladder:nth-child(4){min-height:388px}
.ladder.is-current{border-color:var(--accent);border-width:2px;background:#FCFEF5}
.ladder-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.ladder-name{font-size:16px;font-weight:700;color:var(--ink-900)}
.ladder-threshold{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--ink-900);line-height:1.1}
.ladder-threshold small{display:block;font-family:inherit;font-size:12px;font-weight:500;color:var(--ink-500);letter-spacing:.04em;margin-top:6px}
.ladder-list{display:flex;flex-direction:column;gap:9px;margin-top:auto}
.ladder-list li{display:flex;gap:9px;font-size:14px;color:var(--ink-500);line-height:1.65}
.ladder-list li i{color:var(--accent-ink);background:var(--accent);width:16px;height:16px;border-radius:50%;font-size:9px;display:flex;align-items:center;justify-content:center;flex:0 0 auto;margin-top:5px}

/* ---------- 对比表 ---------- */
.compare-wrap{border:1px solid var(--steel);border-radius:var(--radius-card);overflow:hidden;background:var(--surface)}
.compare-table{width:100%;border-collapse:collapse;margin:0}
.compare-table th,.compare-table td{padding:0 20px;height:58px;vertical-align:middle;text-align:left;font-size:14.5px;border-bottom:1px solid var(--steel)}
.compare-table thead th{
  position:sticky;top:0;z-index:2;background:var(--ink-900);color:#fff;
  font-size:14px;font-weight:600;height:64px;border-bottom:0;
}
.compare-table thead th.reco{background:var(--accent);color:var(--accent-ink)}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table td{color:var(--ink-500)}
.compare-table td:first-child{color:var(--ink-900);font-weight:600}
.compare-table td.reco{background:#FBFDF3;color:var(--ink-700);font-weight:600}
.compare-table tbody tr:hover td{background:#FAFBF7}
.compare-table tbody tr:hover td.reco{background:#F5FBE2}
.badge-reco{display:inline-block;margin-left:8px;background:var(--accent-ink);color:var(--accent);font-size:11px;font-weight:700;padding:2px 8px;border-radius:4px;vertical-align:middle}
.compare-mobile{display:none}

/* ---------- 限时入口 ---------- */
.timer-block{position:relative;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-card);padding:34px 30px}
.timer-block::before,.timer-block::after{content:"";position:absolute;width:18px;height:18px;border:1px solid rgba(199,240,74,.55)}
.timer-block::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.timer-block::after{bottom:-1px;right:-1px;border-left:0;border-top:0}
.timer-label{display:inline-block;background:rgba(228,87,61,.14);border:1px solid rgba(228,87,61,.5);color:#F09280;font-size:12px;font-weight:700;letter-spacing:.1em;padding:4px 10px;border-radius:4px;margin-bottom:20px}
.timer-digits{display:flex;align-items:center;gap:18px}
.timer-unit{text-align:center}
.timer-unit b{display:block;font-family:var(--mono);font-size:clamp(30px,4vw,52px);font-weight:700;color:#fff;line-height:1;letter-spacing:-.02em}
.timer-unit span{display:block;font-size:12px;color:#9AA1A9;margin-top:10px;letter-spacing:.1em}
.timer-sep{width:1px;height:44px;background:rgba(255,255,255,.16)}
.timer-foot{margin-top:24px;font-size:14px;color:#9AA1A9}
.access-side{display:flex;flex-direction:column;gap:18px}
.access-item{display:flex;gap:14px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.1)}
.access-item:last-child{border-bottom:0;padding-bottom:0}
.access-item i{color:var(--accent);font-size:17px;margin-top:5px}
.access-item b{display:block;color:#fff;font-size:15.5px;font-weight:600;margin-bottom:4px}
.access-item p{font-size:14px;color:#9AA1A9;margin:0}

/* ---------- 表单 ---------- */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.form-panel{background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);padding:32px}
.form-row{margin-bottom:18px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.form-control,.form-select{
  width:100%;display:block;padding:12px 14px;font-size:15px;line-height:1.5;
  color:var(--ink-700);background:var(--surface);
  border:1px solid var(--steel);border-radius:var(--radius-input);
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
  font-family:inherit;
}
.form-control::placeholder{color:#A7ADB4}
.form-control:hover,.form-select:hover{border-color:#C9CED4}
.form-control:focus,.form-select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(199,240,74,.30);
}
textarea.form-control{min-height:118px;resize:vertical}
.form-hint{font-size:12.5px;color:var(--ink-500);margin-top:10px}
.form-alert{display:none;margin-top:16px;padding:12px 16px;border-radius:var(--radius-input);font-size:14px;border:1px solid var(--steel);background:#F4F7EC;color:var(--ink-700)}
.form-alert.is-show{display:block}
.form-alert.is-error{background:#FDF1EE;border-color:rgba(228,87,61,.4);color:#B23A22}
.side-panel{display:flex;flex-direction:column;gap:26px}
.side-card{border-left:3px solid var(--accent);padding-left:20px}
.side-card b{display:block;font-size:16.5px;color:var(--ink-900);margin-bottom:8px}
.side-card p{font-size:14.5px;color:var(--ink-500);margin:0}
.side-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.metric-box{background:var(--paper);border:1px solid var(--steel);border-radius:var(--radius-card);padding:20px}
.metric-box b{display:block;font-family:var(--mono);font-size:24px;font-weight:700;color:var(--ink-900);line-height:1.2}
.metric-box span{display:block;font-size:13px;color:var(--ink-500);margin-top:6px}

/* ---------- 资讯列表 ---------- */
.news-layout{display:grid;grid-template-columns:1.35fr 1fr;gap:24px}
.news-side{display:grid;gap:24px;align-content:start}
.news-more{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .32s var(--ease),box-shadow .32s var(--ease),transform .32s var(--ease);
}
.news-card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.news-card:hover .news-title{color:var(--ink-900)}
.news-thumb{position:relative;overflow:hidden;background:#EDEEF0}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-lead .news-thumb{aspect-ratio:16/9}
.news-side .news-card{flex-direction:row;align-items:stretch}
.news-side .news-thumb{flex:0 0 158px;aspect-ratio:auto}
.news-more .news-thumb{aspect-ratio:16/9}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--ink-500);font-family:var(--mono)}
.badge-cat{
  display:inline-block;background:var(--ink-900);color:#fff;font-size:11.5px;font-weight:600;
  padding:3px 9px;border-radius:4px;letter-spacing:.04em;font-family:inherit;
}
.news-title{font-size:17px;font-weight:700;color:var(--ink-700);line-height:1.5;transition:color .28s var(--ease)}
.news-lead .news-title{font-size:21px}
.news-sum{font-size:14px;color:var(--ink-500);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  background:#F1F2F0;border:1px dashed var(--steel);border-radius:var(--radius-card);
  padding:64px 24px;text-align:center;
}
.empty-state i{font-size:32px;color:#B4BABF;display:block;margin-bottom:16px}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:20px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{border:1px solid var(--steel);border-radius:var(--radius-card) !important;margin-bottom:14px;background:var(--surface);overflow:hidden}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--ink-900);background:var(--surface);
  padding:22px 26px;box-shadow:none !important;border-radius:0 !important;
  transition:background .28s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--ink-900);background:#FBFCF8;border-left:3px solid var(--accent)}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:13px;color:var(--ink-500);
  transition:transform .32s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--ink-900)}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:6px 26px 26px;font-size:15.5px;color:var(--ink-500);line-height:1.9;background:#FBFCF8}

/* ---------- 收尾 CTA ---------- */
.cta-band{
  background:var(--ink-900);color:#fff;border-radius:20px;padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border:1px solid rgba(199,240,74,.22);border-radius:50%;
}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;color:#fff;line-height:1.2;margin-bottom:12px}
.cta-band p{color:#9AA1A9;font-size:15.5px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#9AA1A9;padding:70px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand b{font-size:18px;font-weight:800;color:#fff}
.footer-brand span{font-size:11px;letter-spacing:.22em;color:#9AA1A9;display:block;font-weight:600}
.footer-about{font-size:14px;line-height:1.85;color:#9AA1A9;max-width:320px}
.footer-col h4{font-size:13px;letter-spacing:.14em;color:#fff;font-weight:700;margin-bottom:18px;text-transform:uppercase}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:#9AA1A9}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:14px;color:#9AA1A9;display:flex;gap:10px;align-items:flex-start}
.footer-contact li + li{margin-top:11px}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:13px}
.footer-qr{width:92px;height:92px;border-radius:10px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);display:flex;align-items:center;justify-content:center;color:#5C6269;font-size:26px;margin-top:16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:#6E747B}
.footer-bottom a{color:#6E747B}
.footer-bottom a:hover{color:var(--accent)}

.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--ink-900);color:#fff;border:0;display:flex;align-items:center;justify-content:center;
  font-size:15px;cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity .32s var(--ease),visibility .32s var(--ease),transform .32s var(--ease);
  z-index:1040;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{background:var(--accent);color:var(--accent-ink);transform:translateY(-3px)}

/* ---------- 移动端菜单 ---------- */
.offcanvas.site-menu{background:var(--ink-900);color:#fff;max-width:100%}
.site-menu .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.1);padding:18px 22px}
.site-menu .offcanvas-title{font-size:16px;font-weight:700;color:#fff}
.site-menu .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.7}
.site-menu .offcanvas-body{padding:22px}
.m-menu{display:flex;flex-direction:column;gap:6px;margin-bottom:26px}
.m-menu a{font-size:19px;font-weight:600;color:#fff;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.m-menu a:hover,.m-menu a[aria-current="page"]{color:var(--accent)}
.m-contact{font-size:14px;color:#9AA1A9;line-height:1.9}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .52s var(--ease),transform .52s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
  .hero-bg{transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:72px 0}
  .hero-copy{grid-column:span 7}
  .hero-visual{grid-column:span 5}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;}
}
@media (max-width:991px){
  .nav-group{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-shell{justify-content:center;position:relative}
  .nav-toggle{position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .section{padding:64px 0}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-copy,.hero-visual{grid-column:span 1}
  .hero-visual img{aspect-ratio:16/9}
  .ladders{grid-template-columns:repeat(2,1fr);align-items:stretch}
  .ladder{min-height:0 !important}
  .consult-grid{grid-template-columns:1fr;gap:36px}
  .news-layout{grid-template-columns:1fr}
  .news-more{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .trust-item{flex:1 1 45%;border-right:0;padding:14px 0}
  .trust-item:first-child{padding-left:0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero{padding-top:56px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:22px 0}
  .hero-stat{border-right:0;padding-right:0}
  .hero-stat:nth-child(odd){border-right:1px solid rgba(255,255,255,.12)}
  .compare-wrap{display:none}
  .compare-mobile{display:grid;gap:16px}
  .compare-card{background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);padding:22px}
  .compare-card.is-reco{border-color:var(--accent);border-width:2px}
  .compare-card h3{font-size:17px;font-weight:700;color:var(--ink-900);margin-bottom:14px;display:flex;align-items:center;justify-content:space-between}
  .compare-card dl{display:grid;grid-template-columns:auto 1fr;gap:10px 16px;margin:0;font-size:14px}
  .compare-card dt{color:var(--ink-500)}
  .compare-card dd{margin:0;color:var(--ink-700);text-align:right;font-weight:600}
  .news-side .news-card{flex-direction:column}
  .news-side .news-thumb{flex:none;aspect-ratio:16/9}
  .news-more{grid-template-columns:1fr}
  .news-lead .news-title{font-size:19px}
  .timer-digits{gap:10px}
  .timer-unit b{font-size:30px}
  .cta-band{padding:38px 26px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .announce{height:auto;padding:8px 0}
  .announce-inner{flex-wrap:wrap}
  .announce p{white-space:normal;font-size:12.5px}
}
@media (max-width:519px){
  .eyebrow{font-size:11px}
  .hero h1{font-size:34px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .ladders{grid-template-columns:1fr}
  .side-metrics{grid-template-columns:1fr}
  .form-panel{padding:22px}
  .brand-text b{font-size:16px}
}

/* roulang page: article */
:root{
  --ink-900:#101216;
  --ink-700:#22262D;
  --ink-500:#4B5159;
  --paper:#F7F6F3;
  --surface:#FFFFFF;
  --steel:#E6E8EB;
  --accent:#C7F04A;
  --accent-ink:#12160F;
  --alert:#E4573D;
  --radius-card:14px;
  --radius-input:10px;
  --radius-img:12px;
  --shadow-hover:0 18px 40px rgba(16,18,22,.10);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-primary:#C7F04A;
  --bs-body-bg:#F7F6F3;
  --bs-body-color:#22262D;
  --bs-border-color:#E6E8EB;
  --bs-font-sans-serif:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --bs-body-font-family:var(--bs-font-sans-serif);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink-900);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--ink-900);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.mono{font-family:"Roboto Mono","SFMono-Regular",Consolas,Menlo,monospace;letter-spacing:.02em;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  text-decoration:none;transition:transform .32s var(--ease),box-shadow .32s var(--ease),background .32s var(--ease),color .32s var(--ease),border-color .32s var(--ease);
}
.btn .arw{transition:transform .32s var(--ease);}
.btn:hover .arw{transform:translateX(4px);}
.btn-accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);}
.btn-accent:hover{background:#D2F76A;color:var(--accent-ink);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-dark{background:var(--ink-900);color:#fff;border-color:var(--ink-900);}
.btn-dark:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-outline{background:transparent;border-color:var(--steel);color:var(--ink-700);}
.btn-outline:hover{border-color:var(--ink-900);color:var(--ink-900);transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.42);color:#fff;}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ---------- 小节标签 ---------- */
.sec-head{margin-bottom:36px;max-width:760px;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-500);font-weight:600;margin-bottom:14px;
}
.sec-tag::before{content:"";width:10px;height:10px;background:var(--accent);border-radius:2px;display:block;}
.sec-head h2{font-size:clamp(26px,3.2vw,40px);line-height:1.15;font-weight:700;}
.sec-head p{margin:14px 0 0;color:var(--ink-500);font-size:16px;line-height:1.8;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--steel);
  transition:box-shadow .32s var(--ease),background .32s var(--ease);
}
.site-header.is-stuck{background:rgba(255,255,255,.96);box-shadow:0 8px 24px rgba(16,18,22,.06);}
.site-nav{padding:0;background:transparent;}
.nav-shell{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;
  min-height:78px;transition:min-height .32s var(--ease);
}
.site-header.is-stuck .nav-shell{min-height:66px;}
.nav-group{display:flex;align-items:center;gap:4px;}
.nav-group--left{justify-content:flex-start;}
.nav-group--right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--ink-500);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active,.nav-link[aria-current]{color:var(--ink-900);font-weight:600;}
.nav-link.active::after,.nav-link[aria-current]::after{transform:scaleX(1);}
.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{width:40px;height:40px;border-radius:9px;flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1;}
.brand-text b{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;}
.brand-text span{font-size:10px;letter-spacing:.3em;color:var(--ink-500);margin-top:5px;}
.nav-cta{padding:10px 18px;font-size:14px;}
.nav-toggle{
  display:none;justify-self:end;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--steel);
  background:var(--surface);color:var(--ink-900);font-size:17px;cursor:pointer;
  transition:border-color .26s var(--ease),color .26s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink-900);}

/* 移动菜单 */
.site-menu{width:min(340px,88vw);background:var(--surface);border-left:1px solid var(--steel);}
.site-menu .offcanvas-header{border-bottom:1px solid var(--steel);padding:18px 22px;}
.site-menu .offcanvas-title{font-size:16px;font-weight:800;color:var(--ink-900);}
.site-menu .btn-close{
  background:none;border:1px solid var(--steel);border-radius:10px;width:34px;height:34px;
  opacity:1;position:relative;
}
.site-menu .btn-close::before{content:"\f00d";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;color:var(--ink-700);}
.site-menu .btn-close:hover{border-color:var(--ink-900);}
.site-menu .offcanvas-body{padding:20px 22px 28px;display:flex;flex-direction:column;height:100%;}
.menu-list li + li{border-top:1px solid var(--steel);}
.menu-list a{display:block;padding:15px 2px;font-size:17px;font-weight:600;color:var(--ink-900);}
.menu-list a:hover{color:var(--ink-500);}
.menu-note{margin-top:14px;font-size:13px;color:var(--ink-500);}

/* ---------- 文章首屏 ---------- */
.article-hero{
  position:relative;color:#fff;overflow:hidden;
  background-color:var(--ink-900);
  background-image:linear-gradient(90deg,rgba(16,18,22,.92) 0%,rgba(16,18,22,.72) 58%,rgba(16,18,22,.55) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.article-hero__inner{padding:52px 0 58px;max-width:840px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.62);}
.crumb a:hover{color:var(--accent);}
.crumb li{display:inline-flex;align-items:center;}
.crumb li + li::before{content:"/";margin:0 8px;color:rgba(255,255,255,.35);}
.crumb li[aria-current]{color:#fff;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.badge-flat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:4px;font-size:12px;font-weight:600;letter-spacing:.06em;
}
.badge-accent{background:var(--accent);color:var(--accent-ink);}
.badge-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.22);}
.article-hero h1{
  color:#fff;font-size:clamp(30px,4vw,52px);line-height:1.1;font-weight:800;letter-spacing:-.01em;
  max-width:20ch;
}
.article-hero__desc{margin:20px 0 0;color:rgba(255,255,255,.72);font-size:16px;max-width:640px;line-height:1.8;}

/* ---------- 元信息条 ---------- */
.meta-bar{background:var(--surface);border-bottom:1px solid var(--steel);}
.meta-bar__inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  padding:16px 0;font-size:13px;color:var(--ink-500);
}
.meta-bar__inner i{color:var(--ink-900);margin-right:7px;}
.meta-bar__inner .sep{width:1px;height:14px;background:var(--steel);}

/* ---------- 正文布局 ---------- */
.article-main{padding:64px 0 80px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 240px;
  gap:56px;justify-content:center;align-items:start;
}
.article-panel{
  background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  padding:44px 46px;min-width:0;
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-700);word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;margin:2.1em 0 .75em;padding-left:18px;
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.3;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--accent);
}
.article-body h3{margin:1.7em 0 .6em;font-size:20px;font-weight:600;line-height:1.4;}
.article-body h4{margin:1.5em 0 .5em;font-size:17px;font-weight:600;}
.article-body a{color:var(--ink-900);border-bottom:1px solid var(--accent);}
.article-body a:hover{background:rgba(199,240,74,.28);}
.article-body strong{color:var(--ink-900);font-weight:600;}
.article-body blockquote{
  margin:1.8em 0;padding:18px 24px;background:#F3F4F2;border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;}
.article-body ul{list-style:none;}
.article-body ul li{position:relative;padding-left:6px;margin-bottom:.55em;}
.article-body ul li::before{
  content:"";position:absolute;left:-1.05em;top:.74em;width:6px;height:6px;border-radius:1px;background:var(--accent);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:.55em;padding-left:4px;}
.article-body ol li::marker{color:var(--ink-500);font-family:"Roboto Mono",monospace;}
.article-body img{border-radius:var(--radius-img);margin:1.6em auto;background:#EFEFEC;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-500);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;}
.article-body th,.article-body td{
  border:1px solid var(--steel);padding:12px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:#F3F4F2;font-weight:600;color:var(--ink-900);}
.article-body code{
  font-family:"Roboto Mono","SFMono-Regular",Consolas,monospace;font-size:.92em;
  background:#F1F2F0;border:1px solid var(--steel);border-radius:6px;padding:2px 6px;color:var(--ink-900);
}
.article-body pre{
  background:var(--ink-900);color:#EDEFF2;border-radius:var(--radius-img);
  padding:18px 20px;overflow:auto;margin:1.8em 0;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;border:none;color:inherit;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--steel);margin:2.4em 0;}

/* ---------- 空状态 ---------- */
.empty-state{
  background:#F3F4F2;border:1px dashed var(--steel);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;color:var(--ink-500);
}
.empty-state i{font-size:30px;color:var(--ink-500);margin-bottom:14px;display:block;}
.empty-state h3{font-size:20px;margin-bottom:10px;}
.empty-state p{margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.toc-box{background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);padding:20px 20px 16px;}
.toc-box h3{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-500);font-weight:600;margin-bottom:12px;}
.toc-list li + li{margin-top:2px;}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;line-height:1.5;color:var(--ink-500);
  border-left:2px solid transparent;transition:background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.toc-list a:hover{background:#F3F4F2;color:var(--ink-900);}
.toc-list a.is-active{color:var(--ink-900);font-weight:600;border-left-color:var(--accent);background:#F3F4F2;}
.toc-list .lv3 a{padding-left:22px;font-size:13px;}
.aside-card{background:var(--ink-900);border-radius:var(--radius-card);padding:22px;color:#fff;}
.aside-card h3{color:#fff;font-size:17px;margin-bottom:8px;}
.aside-card p{color:rgba(255,255,255,.68);font-size:13.5px;line-height:1.7;margin-bottom:16px;}
.aside-card .btn{width:100%;}

/* ---------- 文末推荐 ---------- */
.post-main{padding:8px 0 80px;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:64px;}
.post-nav-item{
  display:block;background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  padding:22px 24px;transition:border-color .32s var(--ease),transform .32s var(--ease),box-shadow .32s var(--ease);
}
.post-nav-item:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.post-nav-item--next{text-align:right;}
.post-nav-dir{display:block;font-size:13px;color:var(--ink-500);margin-bottom:8px;}
.post-nav-title{display:block;font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;}

.rel-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.rel-side{display:grid;gap:24px;}
.rel-card{
  display:block;background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .32s var(--ease),transform .32s var(--ease),box-shadow .32s var(--ease);
}
.rel-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.rel-thumb{position:relative;overflow:hidden;background:#ECEDEA;}
.rel-card--main .rel-thumb{aspect-ratio:16/9;}
.rel-card--sub{display:grid;grid-template-columns:120px 1fr;align-items:stretch;}
.rel-card--sub .rel-thumb{height:100%;min-height:104px;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:20px 22px;}
.rel-card--sub .rel-body{padding:16px 18px;}
.rel-title{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;margin-bottom:8px;}
.rel-card--main .rel-title{font-size:20px;}
.rel-desc{font-size:14px;color:var(--ink-500);line-height:1.7;margin:0;}
.rel-meta{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:12px;color:var(--ink-500);}
.rel-meta .badge-flat{background:#F1F2F0;color:var(--ink-500);}

/* ---------- CTA ---------- */
.cta-strip{
  background:var(--ink-900);color:#fff;border-radius:var(--radius-card);
  padding:46px 44px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-strip::before,.cta-strip::after{
  content:"";position:absolute;width:54px;height:54px;border:1px solid rgba(199,240,74,.35);
}
.cta-strip::before{top:16px;left:16px;border-right:none;border-bottom:none;}
.cta-strip::after{bottom:16px;right:16px;border-left:none;border-top:none;}
.cta-strip h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.25;}
.cta-strip p{color:rgba(255,255,255,.7);margin:12px 0 0;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.7);margin-top:0;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-text b{color:#fff;}
.footer-brand .brand-text span{color:rgba(255,255,255,.5);}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:360px;margin:0;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{color:rgba(255,255,255,.62);font-size:14px;}
.footer-col ul a:hover{color:var(--accent);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.62);margin-bottom:12px;line-height:1.6;}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:13px;}
.footer-qr{
  width:82px;height:82px;border:1px solid rgba(255,255,255,.18);border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.45);
  font-size:30px;margin-top:18px;background:rgba(255,255,255,.04);
}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .46s var(--ease),transform .46s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,760px);justify-content:center;}
  .article-aside{display:none;}
}
@media (max-width:991px){
  .nav-group--left,.nav-group--right{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{grid-template-columns:1fr auto 1fr;min-height:66px;}
  .brand{grid-column:2;}
  .article-main{padding:48px 0 64px;}
  .article-panel{padding:32px 26px;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-strip{grid-template-columns:1fr;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-about{max-width:none;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .article-hero__inner{padding:38px 0 44px;}
  .rel-card--sub{grid-template-columns:104px 1fr;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-item--next{text-align:left;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  .article-hero h1{font-size:30px;}
  .article-panel{padding:24px 18px;}
  .article-body{font-size:16.5px;}
  .rel-card--sub{grid-template-columns:1fr;}
  .rel-card--sub .rel-thumb{height:150px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .meta-bar__inner{gap:8px 14px;}
  .meta-bar__inner .sep{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#101216;
  --ink-700:#22262D;
  --ink-500:#4B5159;
  --paper:#F7F6F3;
  --surface:#FFFFFF;
  --steel:#E6E8EB;
  --accent:#C7F04A;
  --accent-ink:#12160F;
  --alert:#E4573D;
  --radius-pill:999px;
  --radius-card:14px;
  --radius-input:10px;
  --radius-img:12px;
  --shadow-hover:0 18px 40px rgba(16,18,22,.10);
  --shadow-soft:0 8px 24px rgba(16,18,22,.06);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --space-section:96px;

  --bs-body-bg:var(--paper);
  --bs-body-color:var(--ink-700);
  --bs-body-font-family:var(--font-sans);
  --bs-border-color:var(--steel);
  --bs-link-color:var(--ink-900);
  --bs-link-hover-color:#3d4a12;
  --bs-primary:#101216;
  --bs-primary-rgb:16,18,22;
  --bs-secondary:#22262D;
  --bs-font-sans-serif:var(--font-sans);
  --bs-emphasis-color:var(--ink-900);
}

/* ============ 基础 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink-900);text-decoration:none;transition:color .26s var(--ease)}
a:hover{color:#3d4a12}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700}
p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section--tight{padding:64px 0}
.section--paper{background:var(--paper)}
.section--surface{background:var(--surface)}
.section--dark{background:var(--ink-900);color:#c9cdd3}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-500);
}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--accent);display:inline-block;flex:none}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3.2vw,40px);line-height:1.15;font-weight:700;margin:14px 0 12px}
.section-head p{color:var(--ink-500);font-size:16px;line-height:1.85}
.section--dark .section-head h2{color:#fff}
.section--dark .section-head p{color:#9aa1a9}
.section--dark .eyebrow{color:#9aa1a9}

/* ============ 顶部公告条 ============ */
.topbar{background:var(--ink-900);color:#c8ccd1;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:32px}
.topbar span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar a{color:var(--accent);font-weight:600}
.topbar a:hover{color:#dff98d}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{background:var(--surface);border-bottom-color:var(--steel);box-shadow:var(--shadow-soft)}
.site-nav{padding:14px 0;background:transparent}
.site-header.is-scrolled .site-nav{padding:9px 0}
.site-nav .container{display:block}
.nav-shell{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}
.nav-group{display:flex;align-items:center;gap:4px}
.nav-group--left{justify-content:flex-start}
.nav-group--right{justify-content:flex-end}
.site-nav .nav-link{
  position:relative;padding:9px 13px;font-size:15px;font-weight:500;color:var(--ink-700);
  border-radius:var(--radius-pill);background:transparent;
  transition:color .26s var(--ease),background .26s var(--ease);
}
.site-nav .nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);
}
.site-nav .nav-link:hover{color:var(--ink-900);background:rgba(16,18,22,.04)}
.site-nav .nav-link:hover::after{transform:scaleX(1)}
.site-nav .nav-link[aria-current="page"]{color:var(--ink-900);font-weight:700}
.site-nav .nav-link[aria-current="page"]::after{transform:scaleX(1)}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{width:40px;height:40px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text b{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900)}
.brand-text span{font-size:10.5px;letter-spacing:.22em;color:var(--ink-500);margin-top:2px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--steel);
  background:var(--surface);color:var(--ink-900);align-items:center;justify-content:center;
  transition:border-color .26s var(--ease),transform .26s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink-900);transform:translateY(-1px)}

/* ============ 按钮 ============ */
.btn{
  border-radius:var(--radius-pill);font-weight:600;font-size:15px;padding:12px 22px;
  border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-accent:hover{background:#d5f97a;color:var(--accent-ink);box-shadow:0 12px 26px rgba(199,240,74,.34)}
.btn-solid{background:var(--ink-900);color:#fff;border-color:var(--ink-900)}
.btn-solid:hover{background:var(--ink-700);color:#fff;box-shadow:var(--shadow-hover)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);box-shadow:0 12px 26px rgba(16,18,22,.28)}
.btn-ghost-dark{background:transparent;color:var(--ink-900);border-color:var(--steel)}
.btn-ghost-dark:hover{border-color:var(--ink-900);color:var(--ink-900);box-shadow:var(--shadow-hover)}
.btn .arw{transition:transform .3s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.nav-cta{padding:10px 18px;font-size:14.5px}

/* ============ 移动端菜单 ============ */
.site-menu{width:min(88vw,380px);background:var(--surface);border-left:1px solid var(--steel)}
.site-menu .offcanvas-header{border-bottom:1px solid var(--steel);padding:18px 22px}
.site-menu .offcanvas-body{padding:22px}
.menu-list li{margin-bottom:6px}
.menu-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:19px;font-weight:600;color:var(--ink-900);
  border-bottom:1px solid var(--steel);
}
.menu-list a:hover{color:#3d4a12}
.menu-list a[aria-current="page"]{color:#3d4a12}
.menu-list a[aria-current="page"]::after{content:"当前";font-size:11px;font-family:var(--font-mono);color:var(--ink-500)}
.menu-meta{margin-top:22px;font-size:13px;color:var(--ink-500);line-height:2}
.menu-meta i{color:var(--accent);margin-right:8px}
.site-menu .btn-close{opacity:.6}

/* ============ 分类页 Hero ============ */
.cat-hero{position:relative;overflow:hidden;background:var(--ink-900)}
.cat-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;transform:scale(1.03);
}
.cat-hero__mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,18,22,.95) 0%,rgba(16,18,22,.80) 48%,rgba(16,18,22,.56) 100%)}
.cat-hero__inner{position:relative;padding:70px 0 62px;min-height:360px;display:flex;flex-direction:column;justify-content:center}
.cat-hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.1;
  letter-spacing:-.01em;margin:16px 0 16px;max-width:860px;
}
.cat-hero .lead{color:#c9cdd3;max-width:660px;font-size:16.5px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:40px;border-top:1px solid rgba(255,255,255,.14);padding-top:22px}
.hero-stats div{padding-right:38px;margin-right:38px;border-right:1px solid rgba(255,255,255,.14)}
.hero-stats div:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stats b{display:block;font-family:var(--font-mono);font-size:26px;color:var(--accent);font-weight:600;line-height:1.3}
.hero-stats span{font-size:13px;color:#9aa1a9}

.breadcrumb{--bs-breadcrumb-divider:'/';margin:0;font-size:13px;font-family:var(--font-mono);letter-spacing:.03em;display:flex;flex-wrap:wrap}
.breadcrumb-item a{color:#9aa1a9}
.breadcrumb-item a:hover{color:var(--accent)}
.breadcrumb-item.active{color:var(--accent)}
.breadcrumb-item+.breadcrumb-item::before{color:#5d646c;padding:0 8px}

/* ============ 分步流程时间轴 ============ */
.flow-layout{display:grid;grid-template-columns:1fr;gap:0}
.flow-list{position:relative;max-width:900px}
.flow-list::before{
  content:"";position:absolute;left:27px;top:16px;bottom:26px;width:2px;
  background:linear-gradient(180deg,var(--accent) 0%,var(--accent) 55%,var(--steel) 100%);
}
.flow-item{position:relative;padding:0 0 42px 88px}
.flow-item:last-child{padding-bottom:0}
.flow-num{
  position:absolute;left:0;top:0;width:56px;height:56px;border-radius:var(--radius-card);
  background:var(--ink-900);color:var(--accent);border:1px solid var(--ink-700);
  font-family:var(--font-mono);font-size:19px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.flow-item h3{font-size:20px;font-weight:600;margin-bottom:8px}
.flow-item p{color:var(--ink-500);font-size:15.5px;max-width:640px}
.flow-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.badge-tag{
  display:inline-block;padding:4px 10px;border-radius:4px;background:rgba(16,18,22,.05);
  color:var(--ink-700);font-size:12px;font-family:var(--font-mono);letter-spacing:.02em;
}
.badge-tag--accent{background:rgba(199,240,74,.32);color:var(--accent-ink)}

/* ============ 错位要点说明 ============ */
.split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.split__title{position:sticky;top:118px}
.split__title h2{font-size:clamp(26px,3vw,38px);line-height:1.15;margin:14px 0 16px}
.split__title p{color:var(--ink-500);font-size:15.5px}
.split__body{display:grid;grid-template-columns:repeat(2,1fr);gap:34px 40px}
.point{padding-top:18px;border-top:2px solid var(--steel);transition:border-color .3s var(--ease)}
.point:hover{border-top-color:var(--accent)}
.point h3{font-size:19px;font-weight:600;margin-bottom:9px}
.point p{color:var(--ink-500);font-size:15.5px;line-height:1.85}
.point .idx{display:block;font-family:var(--font-mono);font-size:12px;color:var(--ink-500);letter-spacing:.12em;margin-bottom:10px}

/* ============ 窄版对比块 ============ */
.compare{
  background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  max-width:960px;margin:0 auto;overflow:hidden;
}
.compare__head{
  padding:26px 30px;border-bottom:1px solid var(--steel);
  display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;
}
.compare__head h2{font-size:22px;font-weight:700}
.compare__head p{font-size:14px;color:var(--ink-500)}
.cmp-table{margin:0;font-size:15px;--bs-table-bg:transparent;border-color:var(--steel)}
.cmp-table thead th{
  background:var(--ink-900);color:#fff;border-color:var(--ink-900);
  font-size:14px;font-weight:600;padding:16px 20px;vertical-align:middle;white-space:nowrap;
}
.cmp-table thead th.is-rec{background:var(--accent);color:var(--accent-ink)}
.cmp-table tbody td{
  padding:18px 20px;border-color:var(--steel);vertical-align:middle;color:var(--ink-700);
  background:transparent;
}
.cmp-table tbody tr:hover td{background:rgba(199,240,74,.09)}
.cmp-table tbody th{
  font-weight:600;color:var(--ink-900);padding:18px 20px;border-color:var(--steel);
  background:transparent;white-space:nowrap;
}
.compare__figure{position:relative;overflow:hidden;border-top:1px solid var(--steel)}
.compare__figure img{width:100%;height:230px;object-fit:cover;background:var(--steel)}

/* ============ 更新提示条 ============ */
.update-bar{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  background:var(--surface);border:1px solid var(--steel);border-left:4px solid var(--accent);
  border-radius:var(--radius-card);padding:18px 22px;margin-bottom:40px;
}
.update-bar strong{font-size:15px;color:var(--ink-900)}
.update-bar span{font-size:14px;color:var(--ink-500)}
.update-bar .time{font-family:var(--font-mono);font-size:13px;color:var(--ink-500);margin-left:auto}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion-item{
  border:1px solid var(--steel);border-radius:var(--radius-card);margin-bottom:12px;
  overflow:hidden;background:var(--surface);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--ink-900);background:var(--surface);
  padding:20px 24px;border:0;box-shadow:none;line-height:1.6;
}
.accordion-button:not(.collapsed){background:var(--surface);color:var(--ink-900);box-shadow:inset 3px 0 0 var(--accent)}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button::after{
  width:10px;height:10px;border-right:2px solid var(--ink-900);border-bottom:2px solid var(--ink-900);
  background-image:none;transform:rotate(45deg);transition:transform .3s var(--ease);
  margin-left:auto;flex:none;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.accordion-body{padding:0 24px 22px;color:var(--ink-500);font-size:15.5px;background:var(--paper);line-height:1.9}

/* ============ 咨询 CTA ============ */
.cta-section{background:var(--ink-900);color:#c9cdd3;padding:var(--space-section) 0}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.form-card{background:var(--surface);border-radius:var(--radius-card);padding:30px;box-shadow:0 24px 50px rgba(0,0,0,.22)}
.form-card h3{font-size:21px;font-weight:700;margin-bottom:6px}
.form-card .hint{font-size:14px;color:var(--ink-500);margin-bottom:22px}
.form-label{font-size:13px;font-weight:600;color:var(--ink-500);margin-bottom:6px}
.form-control,.form-select{
  border-radius:var(--radius-input);border:1px solid var(--steel);background:var(--surface);
  padding:12px 14px;font-size:15px;color:var(--ink-700);
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.form-control::placeholder{color:#9aa1a9}
.form-control:focus,.form-select:focus{
  border-color:var(--accent);box-shadow:0 0 0 4px rgba(199,240,74,.25);background:var(--surface);color:var(--ink-900);
}
.form-note{font-size:12.5px;color:var(--ink-500);margin-top:12px}
.form-alert{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--radius-input);
  background:rgba(199,240,74,.22);border:1px solid var(--accent);color:var(--accent-ink);font-size:14px;
}
.form-alert.show{display:block}
.cta-figure{border-radius:var(--radius-img);overflow:hidden;border:1px solid rgba(255,255,255,.10)}
.cta-figure img{width:100%;height:250px;object-fit:cover;background:#1b1f25}
.benefit-list{margin-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.benefit-list li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.benefit-list i{color:var(--accent);font-size:16px;margin-top:5px;flex:none}
.benefit-list b{display:block;color:#fff;font-size:16px;font-weight:600;margin-bottom:4px}
.benefit-list p{font-size:14.5px;color:#9aa1a9;line-height:1.8}
.cta-lead{color:#c9cdd3;font-size:16px;max-width:620px;margin-bottom:26px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#9aa1a9;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about{font-size:14.5px;line-height:1.9;color:#8b929a;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#9aa1a9;font-size:14.5px}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:#9aa1a9;line-height:1.7}
.footer-contact i{color:var(--accent);margin-top:6px;flex:none;font-size:13px}
.footer-qr{
  width:64px;height:64px;border:1px dashed #3a4048;border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:#4d545c;font-size:26px;margin-top:18px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;font-family:var(--font-mono);color:#6f767e;
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--ink-900);color:var(--accent);border:1px solid var(--ink-700);
  display:grid;place-items:center;z-index:1040;opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);color:var(--accent)}

/* ============ 进入动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--space-section:72px}
  .split{gap:40px}
}
@media (max-width:991.98px){
  .nav-group{display:none}
  .nav-toggle{display:inline-flex;position:absolute;right:24px;top:50%;transform:translateY(-50%)}
  .nav-shell{position:relative;grid-template-columns:1fr;justify-items:center}
  .brand{grid-column:1}
  .cta-grid,.split{grid-template-columns:1fr;gap:32px}
  .split__title{position:static}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cat-hero__inner{min-height:320px;padding:56px 0 52px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container{padding:0 20px}
  .hero-stats{flex-direction:column;gap:16px}
  .hero-stats div{border-right:0;margin-right:0;padding-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:14px}
  .hero-stats div:last-child{border-bottom:0;padding-bottom:0}
  .split__body{grid-template-columns:1fr;gap:26px}
  .flow-item{padding-left:72px;padding-bottom:34px}
  .flow-num{width:48px;height:48px;font-size:16px}
  .flow-list::before{left:23px}
  .compare__head{padding:22px}
  .cmp-table thead{display:none}
  .cmp-table tbody tr{display:grid;gap:6px;padding:18px 20px;border-bottom:1px solid var(--steel)}
  .cmp-table tbody th,.cmp-table tbody td{display:block;padding:0;border:0}
  .cmp-table tbody th{font-size:13px;color:var(--ink-500);font-family:var(--font-mono)}
  .cmp-table tbody td::before{
    content:attr(data-label);display:block;font-size:12px;font-family:var(--font-mono);
    color:var(--ink-500);letter-spacing:.08em;margin-top:10px;
  }
  .topbar .container{justify-content:center}
  .topbar a{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:575.98px){
  :root{--space-section:56px}
  .cat-hero h1{font-size:30px}
  .cat-hero .lead{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .form-card{padding:22px}
  .accordion-button{font-size:16px;padding:18px 18px}
  .accordion-body{padding:0 18px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .cat-hero__bg{transform:none}
}

/* roulang page: category2 */
:root{
  --ink-900:#101216;
  --ink-700:#22262D;
  --ink-500:#4B5159;
  --paper:#F7F6F3;
  --surface:#FFFFFF;
  --steel:#E6E8EB;
  --accent:#C7F04A;
  --accent-ink:#12160F;
  --alert:#E4573D;
  --radius-card:14px;
  --radius-input:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-hover:0 18px 40px rgba(16,18,22,.10);
  --ease:cubic-bezier(.2,.7,.2,1);
  --maxw:1200px;
  --mono:"Roboto Mono","SFMono-Regular",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:inherit;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.15;letter-spacing:-.01em;}
p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.container{max-width:var(--maxw);padding-left:24px;padding-right:24px;}

/* ---------- 公告条 ---------- */
.topbar{background:var(--ink-900);color:rgba(255,255,255,.7);}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:32px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;
}
.topbar__inner a{color:var(--accent);}
.topbar__inner a:hover{color:#fff;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--steel);
  backdrop-filter:saturate(160%) blur(10px);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(16,18,22,.07);}
.site-nav{padding:0;}
.nav-shell{
  position:relative;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;
  min-height:78px;
  transition:min-height .3s var(--ease);
}
.site-header.is-scrolled .nav-shell{min-height:64px;}
.nav-group{display:flex;align-items:center;gap:26px;}
.nav-group--left{justify-content:flex-start;}
.nav-group--right{justify-content:flex-end;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);
  padding:6px 0;display:inline-block;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{color:var(--ink-900);font-weight:600;}

.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{width:38px;height:38px;flex:0 0 auto;border-radius:9px;}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-text b{font-size:18px;font-weight:800;letter-spacing:-.01em;}
.brand-text span{font-size:11px;letter-spacing:.22em;color:var(--ink-500);}

.nav-toggle{
  display:none;position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:12px;border:1px solid var(--steel);
  background:var(--surface);color:var(--ink-900);align-items:center;justify-content:center;
  font-size:17px;cursor:pointer;transition:border-color .26s var(--ease),background .26s var(--ease);
}
.nav-toggle:hover{border-color:var(--accent);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;padding:12px 26px;cursor:pointer;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
}
.btn .arw{transition:transform .3s var(--ease);}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn:hover .arw{transform:translateX(4px);}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn-accent{background:var(--accent);color:var(--accent-ink);}
.btn-accent:hover{background:#b9e43c;color:var(--accent-ink);}
.btn-dark{background:var(--ink-900);color:#fff;}
.btn-dark:hover{background:var(--ink-700);color:#fff;}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{border-color:var(--accent);color:#fff;}
.btn-ghost--ink{color:var(--ink-900);border-color:var(--steel);background:var(--surface);}
.btn-ghost--ink:hover{border-color:var(--ink-900);color:var(--ink-900);}
.nav-cta{padding:9px 18px;font-size:14px;}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{margin-bottom:44px;max-width:720px;}
.section-head h2{font-size:clamp(26px,3.2vw,40px);margin:14px 0 12px;}
.section-head p{color:var(--ink-500);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-500);
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);}
.eyebrow--light{color:rgba(255,255,255,.72);}
.badge-tag{
  display:inline-block;border-radius:4px;padding:3px 9px;
  background:rgba(199,240,74,.28);color:var(--accent-ink);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge-tag--ink{background:var(--ink-900);color:#fff;}
.badge-tag--mono{font-family:var(--mono);letter-spacing:.06em;}

/* ---------- 内页首屏 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink-900);}
.page-hero__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.36;transform:scale(1.05);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,18,22,.95) 0%,rgba(16,18,22,.8) 48%,rgba(16,18,22,.58) 100%);
}
.page-hero__inner{position:relative;z-index:2;padding:62px 0 68px;color:#fff;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;font-size:13px;color:rgba(255,255,255,.58);margin-bottom:22px;}
.crumb li{display:inline-flex;align-items:center;}
.crumb li:not(:last-child)::after{content:"/";margin:0 10px;color:rgba(255,255,255,.28);}
.crumb a{color:rgba(255,255,255,.76);}
.crumb a:hover{color:var(--accent);}
.crumb [aria-current="page"]{color:rgba(255,255,255,.55);}
.page-hero h1{
  font-size:clamp(30px,4.4vw,52px);font-weight:800;line-height:1.1;
  margin:16px 0 18px;max-width:780px;
}
.page-hero__lead{color:rgba(255,255,255,.72);font-size:16px;max-width:660px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);}
.hero-stats > div{padding-right:36px;margin-right:36px;border-right:1px solid rgba(255,255,255,.14);}
.hero-stats > div:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stats b{display:block;font-family:var(--mono);font-size:26px;font-weight:600;color:#fff;line-height:1.2;}
.hero-stats span{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.55);}

/* ---------- 帮助布局 ---------- */
.help-layout{display:grid;grid-template-columns:262px minmax(0,1fr);gap:56px;align-items:start;}
.side-toc{position:sticky;top:108px;}
.side-toc__box{
  background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  padding:24px 22px;
}
.side-toc__title{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-500);font-weight:600;margin-bottom:14px;}
.side-toc__list li + li{margin-top:2px;}
.side-toc__list a{
  display:flex;align-items:center;gap:10px;
  font-size:14.5px;color:var(--ink-700);padding:9px 10px;border-radius:8px;
  transition:background .26s var(--ease),color .26s var(--ease);
}
.side-toc__list a::before{
  content:"";width:3px;height:14px;border-radius:2px;background:var(--steel);
  transition:background .26s var(--ease);
}
.side-toc__list a:hover{background:#F3F4F1;color:var(--ink-900);}
.side-toc__list a.is-active{background:rgba(199,240,74,.24);color:var(--ink-900);font-weight:600;}
.side-toc__list a.is-active::before{background:var(--accent);}
.side-toc__foot{margin-top:20px;padding-top:18px;border-top:1px solid var(--steel);font-size:13px;color:var(--ink-500);line-height:1.8;}
.side-toc__foot a{color:var(--ink-900);font-weight:600;border-bottom:1px solid var(--accent);}

/* ---------- 条目列表 ---------- */
.entry-list{border-top:1px solid var(--steel);}
.entry{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:22px;align-items:center;
  padding:26px 20px;border-bottom:1px solid var(--steel);
  transition:background .3s var(--ease),padding .3s var(--ease);
}
.entry:hover{background:rgba(199,240,74,.16);}
.entry__num{font-family:var(--mono);font-size:14px;color:var(--ink-500);letter-spacing:.06em;padding-top:2px;}
.entry__title{display:block;font-size:18px;font-weight:600;color:var(--ink-900);margin-bottom:6px;}
.entry__desc{display:block;font-size:15px;color:var(--ink-500);line-height:1.8;}
.entry__arrow{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--steel);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-500);font-size:15px;
  transition:transform .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease);
}
.entry:hover .entry__arrow{transform:translateX(4px);background:var(--accent);border-color:var(--accent);color:var(--accent-ink);}

/* ---------- 规格表 ---------- */
.spec-wrap{border:1px solid var(--steel);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);}
.spec-table{width:100%;border-collapse:collapse;margin:0;}
.spec-table th,.spec-table td{
  padding:18px 24px;border-bottom:1px solid var(--steel);
  font-size:15px;vertical-align:middle;text-align:left;
}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0;}
.spec-table th{width:236px;background:#FBFBFA;color:var(--ink-700);font-weight:600;}
.spec-table td{color:var(--ink-500);}
.spec-table td b{color:var(--ink-900);font-family:var(--mono);font-weight:600;}

/* ---------- 阅读卡片 ---------- */
.read-grid{display:grid;grid-template-columns:1.22fr 1fr;grid-template-rows:auto auto;gap:24px;}
.read-card{
  background:var(--surface);border:1px solid var(--steel);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.read-card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.read-card--lead{grid-row:span 2;display:flex;flex-direction:column;}
.read-card__media{background:#EDEDEA;overflow:hidden;}
.read-card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.read-card:hover .read-card__media img{transform:scale(1.03);}
.read-card--lead .read-card__media{aspect-ratio:16/10;}
.read-card__body{padding:24px 26px 26px;}
.read-card__body h3{font-size:19px;margin:12px 0 10px;line-height:1.4;}
.read-card__body p{font-size:14.5px;color:var(--ink-500);line-height:1.8;}
.read-card--row{display:grid;grid-template-columns:150px minmax(0,1fr);align-items:stretch;}
.read-card--row .read-card__media{height:100%;min-height:132px;}
.read-card--row .read-card__body{padding:20px 22px;display:flex;flex-direction:column;justify-content:center;}
.read-card--row .read-card__body h3{font-size:16.5px;margin:8px 0 6px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);border-radius:20px;color:#fff;
  padding:56px 52px;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;width:34px;height:34px;border:1px solid rgba(199,240,74,.4);
}
.cta-band::before{top:22px;left:22px;border-right:0;border-bottom:0;}
.cta-band::after{bottom:22px;right:22px;border-left:0;border-top:0;}
.cta-band__grid{display:grid;grid-template-columns:minmax(0,1.3fr) auto;gap:36px;align-items:center;position:relative;z-index:2;}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.7);font-size:15.5px;max-width:560px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band__note{margin-top:16px;font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.5);letter-spacing:.04em;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.66);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-text b{color:#fff;}
.footer-brand .brand-text span{color:rgba(255,255,255,.55);}
.footer-about{font-size:14px;line-height:1.9;max-width:340px;color:rgba(255,255,255,.6);}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.08em;margin-bottom:18px;font-weight:600;}
.footer-col ul li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:var(--accent);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;}
.footer-contact i{color:var(--accent);font-size:13px;margin-top:6px;}
.footer-qr{
  margin-top:18px;width:96px;height:96px;border:1px solid rgba(255,255,255,.18);
  border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.4);font-size:34px;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  font-size:12.5px;color:rgba(255,255,255,.45);font-family:var(--mono);letter-spacing:.03em;
}

/* ---------- Offcanvas ---------- */
.site-menu{background:var(--surface);color:var(--ink-900);width:320px;}
.site-menu .offcanvas-header{border-bottom:1px solid var(--steel);padding:20px 24px;}
.site-menu .offcanvas-title{font-size:14px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-500);font-weight:600;}
.site-menu .btn-close{box-shadow:none;}
.site-menu .offcanvas-body{padding:24px;}
.menu-list li + li{margin-top:4px;}
.menu-list a{
  display:block;font-size:18px;font-weight:600;padding:12px 4px;
  border-bottom:1px solid var(--steel);color:var(--ink-900);
}
.menu-list a[aria-current="page"]{color:var(--ink-900);}
.menu-list a[aria-current="page"]::before{content:"";display:inline-block;width:6px;height:6px;background:var(--accent);border-radius:2px;margin-right:10px;vertical-align:middle;}
.menu-meta{margin-top:26px;font-size:13px;color:var(--ink-500);line-height:1.9;}

/* ---------- 进入动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:72px 0;}
  .section--tight{padding:60px 0;}
  .help-layout{grid-template-columns:230px minmax(0,1fr);gap:36px;}
}
@media (max-width:991px){
  .nav-shell{display:flex;justify-content:center;min-height:66px;}
  .nav-group--left,.nav-group--right{display:none;}
  .nav-toggle{display:inline-flex;}
  .topbar__inner{font-size:11.5px;}
  .help-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .side-toc{position:static;}
  .side-toc__box{padding:18px 16px;}
  .side-toc__list{display:flex;flex-wrap:wrap;gap:8px;}
  .side-toc__list li + li{margin-top:0;}
  .side-toc__list a{padding:7px 12px;border:1px solid var(--steel);border-radius:8px;}
  .side-toc__list a::before{display:none;}
  .read-grid{grid-template-columns:minmax(0,1fr);}
  .read-card--lead{grid-row:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:40px 30px;}
  .cta-band__grid{grid-template-columns:minmax(0,1fr);gap:24px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding-left:20px;padding-right:20px;}
  .page-hero__inner{padding:48px 0 52px;}
  .page-hero__lead{font-size:15px;}
  .hero-stats > div{padding-right:22px;margin-right:22px;}
  .hero-stats b{font-size:22px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .entry{grid-template-columns:auto minmax(0,1fr);gap:16px;padding:22px 14px;}
  .entry__arrow{display:none;}
  .entry__title{font-size:16.5px;}
  .read-card--row{grid-template-columns:120px minmax(0,1fr);}
  .spec-table th{width:130px;padding:14px 16px;font-size:14px;}
  .spec-table td{padding:14px 16px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{font-size:12px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:29px;}
  .hero-stats{flex-direction:column;gap:14px;}
  .hero-stats > div{border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding:0 0 12px;margin:0;}
  .hero-stats > div:last-child{border-bottom:0;padding-bottom:0;}
  .read-card--row{grid-template-columns:minmax(0,1fr);}
  .read-card--row .read-card__media{aspect-ratio:16/9;min-height:0;}
  .cta-band{border-radius:16px;padding:34px 22px;}
  .btn{width:100%;}
  .cta-band__actions{width:100%;}
  .nav-cta{width:auto;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .btn,.entry,.read-card,.read-card__media img,.nav-link::after{transition:none !important;}
  .btn:hover,.read-card:hover{transform:none;}
  .read-card:hover .read-card__media img{transform:none;}
}