/* roulang page: index */
:root{
  --bg:#f2f6f5;
  --surface:#ffffff;
  --surface-2:#eaf1f0;
  --ink:#0f2321;
  --ink-soft:#314a47;
  --muted:#617773;
  --brand:#12b3a4;
  --brand-deep:#0a7f75;
  --brand-soft:#e0f4f1;
  --accent:#d99a3f;
  --line:#dfe9e7;
  --line-strong:#c8d8d5;
  --dark:#0b1f1d;
  --dark-2:#102a27;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:16px;
  --shadow-xs:0 1px 2px rgba(15,35,33,.05);
  --shadow-sm:0 6px 18px rgba(15,35,33,.07);
  --shadow-md:0 14px 34px rgba(15,35,33,.11);
  --shadow-lg:0 26px 60px rgba(8,26,24,.20);
  --space:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;line-height:1.78;color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
h1,h2,h3,h4{line-height:1.32;font-weight:700;letter-spacing:-.01em}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
img{display:block;max-width:100%;height:auto}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:3px solid rgba(18,179,164,.5);outline-offset:2px;border-radius:6px}
.container{width:min(1180px,92%);margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(9,28,26,.30);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
  background:rgba(8,26,24,.95);
  border-bottom-color:rgba(255,255,255,.07);
  box-shadow:0 12px 32px rgba(5,20,18,.32);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#19c9b7,#0a7f75);
  color:#03211e;font-weight:800;font-size:19px;letter-spacing:0;
  box-shadow:0 6px 16px rgba(10,127,117,.42);
}
.brand-text{color:#fff;font-weight:700;font-size:18px;letter-spacing:.02em}
.brand-sub{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.16em;line-height:1.2}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav-link{
  color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
  padding:8px 15px;border-radius:999px;line-height:1.4;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.11)}
.nav-link.active{color:#04211f;background:#7ee4d8;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.3;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  min-height:44px;
}
.btn-primary{background:linear-gradient(135deg,#19c9b7,#0f9b8e);color:#032521;box-shadow:0 10px 24px rgba(15,155,142,.32)}
.btn-primary:hover{background:linear-gradient(135deg,#25dbc8,#12b3a4);transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,155,142,.42);color:#02201d}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(15,155,142,.3)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.38)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.6);transform:translateY(-2px);color:#fff}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);box-shadow:var(--shadow-sm);color:var(--brand-deep)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px}
.btn-block{width:100%}

/* ============ hero ============ */
.hero{
  position:relative;isolation:isolate;
  padding:156px 0 96px;
  background:var(--dark) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#fff;text-align:center;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(900px 420px at 50% 0%,rgba(18,179,164,.28),transparent 70%),
    linear-gradient(180deg,rgba(6,22,20,.80) 0%,rgba(6,22,20,.90) 52%,#0b1f1d 100%);
}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:999px;
  background:rgba(126,228,216,.14);border:1px solid rgba(126,228,216,.4);
  color:#a9f0e7;font-size:13px;font-weight:600;letter-spacing:.06em;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#39e0cd;box-shadow:0 0 0 4px rgba(57,224,205,.18);display:inline-block}
.hero h1{
  margin:22px auto 0;max-width:940px;
  font-size:clamp(28px,4.2vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.28;
  text-shadow:0 2px 24px rgba(0,0,0,.32);
}
.hero h1 em{font-style:normal;color:#7ee4d8}
.hero-lead{
  margin:22px auto 0;max-width:800px;
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.82);
}
.group-bar{
  margin:32px auto 0;max-width:640px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);
  padding:18px 22px;text-align:left;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.group-bar-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.group-label{font-size:14px;font-weight:600;color:#e6fffb}
.group-count{font-size:13px;color:#9fe8de}
.group-count strong{color:#7ee4d8;font-size:17px;font-weight:800}
.progress-track{margin-top:12px;height:8px;border-radius:99px;background:rgba(255,255,255,.16);overflow:hidden}
.progress-fill{height:100%;width:70%;border-radius:99px;background:linear-gradient(90deg,#39e0cd,#12b3a4)}
.group-bar-foot{margin-top:10px;font-size:12.5px;color:rgba(255,255,255,.62)}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.hero-tags{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:500;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.85);
}
.tag-solid{background:var(--brand-soft);border-color:transparent;color:var(--brand-deep);font-weight:600}
.tag-accent{background:rgba(217,154,63,.14);border-color:rgba(217,154,63,.35);color:#8d5c11}

/* ============ sections ============ */
.section{padding:var(--space) 0;position:relative}
.section--alt{background:var(--surface)}
.section--soft{background:var(--surface-2)}
.section--dark{background:var(--dark-2);color:#eaf5f3}
.section--dark .section-desc{color:rgba(234,245,243,.72)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-deep);margin-bottom:12px;
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.02em}
.section-desc{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.8}
.section--dark .section-title{color:#fff}
.section--dark .eyebrow{color:#7ee4d8}
.section--dark .eyebrow::before{background:#7ee4d8}

/* ============ grids ============ */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-6{grid-template-columns:repeat(3,1fr)}

/* ============ cards ============ */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card h3{font-size:17.5px;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.78}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;margin-bottom:16px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-weight:800;font-size:16px;letter-spacing:-.02em;
}
.card-tag{margin-top:16px;display:inline-block;font-size:12.5px;font-weight:600;color:var(--brand-deep);background:var(--brand-soft);padding:4px 11px;border-radius:999px}

.media-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.media-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.media-card:hover .media-thumb img{transform:scale(1.045)}
.media-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.media-body h3{font-size:17px}
.media-body p{font-size:14.5px;color:var(--muted)}
.media-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);padding-top:8px}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);font-weight:600;font-size:12px}

/* ============ assurance strip ============ */
.assure-strip{
  background:var(--surface);border-bottom:1px solid var(--line);
  padding:22px 0;
}
.assure-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.assure-item{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--ink-soft);font-weight:500}
.assure-dot{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:800;
}

/* ============ calendar ============ */
.calendar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.calendar-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-xs);display:flex;gap:16px;align-items:flex-start;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.calendar-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.cal-date{
  flex-shrink:0;width:54px;border-radius:10px;background:var(--dark-2);color:#a9f0e7;
  text-align:center;padding:8px 0 6px;
}
.cal-date b{display:block;font-size:19px;font-weight:800;line-height:1.1}
.cal-date span{display:block;font-size:11px;letter-spacing:.1em;color:rgba(169,240,231,.7);margin-top:2px}
.calendar-card h3{font-size:15.5px;margin-bottom:6px}
.calendar-card p{font-size:13.5px;color:var(--muted);line-height:1.7}

/* ============ channel wall ============ */
.channel-card{
  display:block;position:relative;overflow:hidden;
  border-radius:var(--radius-lg);padding:32px 28px;min-height:210px;
  background:linear-gradient(150deg,#0e2b28,#0b1f1d);
  color:#fff;border:1px solid rgba(255,255,255,.08);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(126,228,216,.4);color:#fff}
.channel-card::after{
  content:"";position:absolute;right:-40px;bottom:-60px;
  width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,179,164,.38),transparent 68%);
}
.channel-num{font-size:12px;letter-spacing:.18em;color:#7ee4d8;font-weight:700}
.channel-card h3{margin-top:14px;font-size:20px;color:#fff;position:relative;z-index:1}
.channel-card p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.7);position:relative;z-index:1}
.channel-link{margin-top:20px;display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:#7ee4d8;position:relative;z-index:1}
.channel-card:hover .channel-link{gap:12px}

/* ============ feature split ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.split-figure{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--line)}
.split-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split h3{font-size:22px;margin-bottom:14px}
.split p{font-size:15px;color:var(--muted);margin-bottom:14px}
.check-list{display:flex;flex-direction:column;gap:11px;margin-top:20px}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:var(--ink-soft)}
.check-list li::before{
  content:"";flex-shrink:0;width:18px;height:18px;margin-top:4px;border-radius:50%;
  background:var(--brand-soft);
  box-shadow:inset 0 0 0 5px #fff,inset 0 0 0 12px var(--brand);
}

/* ============ news ============ */
.news-layout{display:grid;grid-template-columns:1.55fr .85fr;gap:32px;align-items:start}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--line-strong)}
.news-thumb{flex-shrink:0;width:132px;aspect-ratio:16/11;border-radius:10px;overflow:hidden;background:var(--surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{min-width:0}
.news-body h3{font-size:16px;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13.6px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:9px;display:flex;gap:10px;align-items:center;font-size:12.5px;color:var(--muted)}
.cms-empty{
  padding:34px 22px;text-align:center;border:1px dashed var(--line-strong);
  border-radius:var(--radius);background:var(--surface);color:var(--muted);font-size:14.5px;
}
.side-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);position:sticky;top:96px;
}
.side-panel h3{font-size:16.5px;margin-bottom:6px}
.side-panel .side-desc{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.side-list{display:flex;flex-direction:column;gap:12px}
.side-list li{
  display:flex;gap:11px;align-items:flex-start;font-size:14px;color:var(--ink-soft);
  padding-bottom:12px;border-bottom:1px dashed var(--line);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-index{
  flex-shrink:0;width:22px;height:22px;border-radius:7px;background:var(--brand-soft);
  color:var(--brand-deep);font-size:12px;font-weight:800;display:grid;place-items:center;margin-top:3px;
}

/* ============ stats ============ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.kpi{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
  border-radius:var(--radius);padding:22px;text-align:left;
}
.kpi b{display:block;font-size:30px;font-weight:800;color:#7ee4d8;letter-spacing:-.02em;line-height:1.15}
.kpi span{display:block;margin-top:6px;font-size:13.5px;color:rgba(234,245,243,.72)}
.bar-list{margin-top:34px;display:flex;flex-direction:column;gap:18px}
.bar-row{display:grid;grid-template-columns:180px 1fr 62px;gap:16px;align-items:center;font-size:14px}
.bar-track{height:9px;border-radius:99px;background:rgba(255,255,255,.13);overflow:hidden}
.bar-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,#39e0cd,#12b3a4)}
.bar-val{text-align:right;font-weight:700;color:#7ee4d8;font-size:13.5px}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:30px 24px 26px;box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.step-num{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--dark-2);color:#7ee4d8;font-weight:800;font-size:15px;margin-bottom:16px;
}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}

/* ============ scenario ============ */
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-xs);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--brand)}
.scene-card h3{font-size:15.5px;margin-bottom:7px;display:flex;align-items:center;gap:9px}
.scene-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex-shrink:0}
.scene-card p{font-size:13.8px;color:var(--muted)}

/* ============ voices ============ */
.voice{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-xs);display:flex;flex-direction:column;gap:14px;height:100%;
}
.voice-quote{font-size:14.8px;color:var(--ink-soft);line-height:1.8}
.voice-user{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:12px;border-top:1px dashed var(--line)}
.voice-avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:14px;
}
.voice-user b{display:block;font-size:14px;color:var(--ink)}
.voice-user span{display:block;font-size:12.5px;color:var(--muted)}

/* ============ faq ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-xs);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:19px 52px 19px 22px;position:relative;
  font-size:15.5px;font-weight:600;color:var(--ink);min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:500;color:var(--brand-deep);transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–"}
.faq-answer{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.82}

/* ============ subscribe ============ */
.subscribe-band{
  background:
    radial-gradient(700px 300px at 15% 10%,rgba(18,179,164,.22),transparent 70%),
    linear-gradient(135deg,#0d2a27,#0a1d1b);
  color:#fff;padding:60px 0;
}
.subscribe-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center;
}
.subscribe-inner h2{font-size:clamp(21px,2.4vw,27px);color:#fff}
.subscribe-inner p{margin-top:12px;font-size:14.8px;color:rgba(255,255,255,.74);line-height:1.8}
.subscribe-form{display:flex;gap:10px;flex-wrap:wrap}
.subscribe-form input{
  flex:1;min-width:190px;padding:13px 16px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);
  color:#fff;font-size:14.5px;transition:border-color .2s ease,background .2s ease;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.5)}
.subscribe-form input:focus{outline:none;border-color:#7ee4d8;background:rgba(255,255,255,.14)}
.form-note{margin-top:10px;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ============ footer ============ */
.site-footer{background:#081917;color:rgba(255,255,255,.66);padding:58px 0 26px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr .9fr;gap:32px}
.footer-brand .brand-text{color:#fff}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);max-width:330px}
.footer-col h3{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:14px;font-weight:700}
.footer-col li{margin-bottom:10px;font-size:14px}
.footer-col a{color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#7ee4d8}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#7ee4d8}

/* ============ floating bar ============ */
.float-bar{
  position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
  z-index:1035;width:min(720px,94%);
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:12px 16px;border-radius:14px;
  background:rgba(9,32,29,.94);border:1px solid rgba(126,228,216,.28);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:0 18px 42px rgba(4,18,16,.4);color:#e6fffb;
  transition:opacity .25s ease,transform .25s ease;
}
.float-bar.hide{opacity:0;transform:translateX(-50%) translateY(16px);pointer-events:none}
.float-text{font-size:13.5px;line-height:1.5}
.float-text strong{color:#7ee4d8;font-weight:800}
.float-actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.float-close{
  width:30px;height:30px;border-radius:8px;display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.72);font-size:15px;line-height:1;
}
.float-close:hover{background:rgba(255,255,255,.18);color:#fff}

/* ============ responsive ============ */
@media (max-width:1024px){
  :root{--space:60px}
  .grid-3,.grid-4,.grid-6{grid-template-columns:repeat(2,1fr)}
  .calendar-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .assure-list{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .news-layout{grid-template-columns:1fr}
  .side-panel{position:static}
  .steps{grid-template-columns:1fr}
  .subscribe-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero{padding:132px 0 80px}
  .bar-row{grid-template-columns:140px 1fr 56px;font-size:13.5px}
}
@media (max-width:860px){
  .main-nav{
    position:absolute;top:72px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    padding:16px 18px 22px;
    background:rgba(8,26,24,.97);
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 20px 40px rgba(3,14,13,.45);
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px;border-radius:10px;font-size:15px}
  .nav-toggle{display:flex}
  .nav-actions .btn-sm{display:none}
  .news-thumb{width:104px}
}
@media (max-width:640px){
  :root{--space:48px}
  .grid-2,.grid-3,.grid-4,.grid-6,.calendar-grid,.kpi-grid,.assure-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero{padding:118px 0 68px}
  .hero h1{font-size:clamp(24px,7vw,30px)}
  .hero-lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .group-bar{padding:16px}
  .news-item{flex-direction:column;gap:12px}
  .news-thumb{width:100%;aspect-ratio:16/9}
  .bar-row{grid-template-columns:1fr;gap:8px;text-align:left}
  .bar-val{text-align:left}
  .float-bar{padding:10px 12px;gap:8px;bottom:10px}
  .float-text{font-size:12.5px;flex:1 1 100%}
  .float-actions{margin-left:0;width:100%}
  .float-actions .btn{flex:1}
  .section-head{margin-bottom:28px}
  .brand-text{font-size:16px}
}

/* roulang page: article */
:root{
  --bg:#f2f6f5;
  --surface:#ffffff;
  --surface-2:#eaf1f0;
  --ink:#0f2321;
  --ink-soft:#314a47;
  --muted:#617773;
  --brand:#12b3a4;
  --brand-deep:#0a7f75;
  --brand-soft:#e0f4f1;
  --accent:#d99a3f;
  --line:#dfe9e7;
  --line-strong:#c8d8d5;
  --dark:#0b1f1d;
  --dark-2:#102a27;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:16px;
  --shadow-xs:0 1px 2px rgba(15,35,33,.05);
  --shadow-sm:0 6px 18px rgba(15,35,33,.07);
  --shadow-md:0 14px 34px rgba(15,35,33,.11);
  --shadow-lg:0 26px 60px rgba(8,26,24,.20);
  --space:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;line-height:1.78;color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease}
img{display:block;max-width:100%;height:auto}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:min(1180px,92%);margin:0 auto}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(9,28,26,.30);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
  background:rgba(8,26,24,.95);
  border-bottom-color:rgba(255,255,255,.07);
  box-shadow:0 12px 32px rgba(5,20,18,.32);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#19c9b7,#0a7f75);
  color:#03211e;font-weight:800;font-size:19px;
  box-shadow:0 6px 16px rgba(10,127,117,.42);
}
.brand-text{color:#fff;font-weight:700;font-size:18px;letter-spacing:.02em;display:block}
.brand-sub{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.16em;line-height:1.2}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav-link{
  color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
  padding:8px 15px;border-radius:999px;line-height:1.4;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.11)}
.nav-link.active{color:#04211f;background:#7ee4d8;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.3;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  min-height:44px;
}
.btn-primary{background:linear-gradient(135deg,#19c9b7,#0f9b8e);color:#032521;box-shadow:0 10px 24px rgba(15,155,142,.32)}
.btn-primary:hover{background:linear-gradient(135deg,#25dbc8,#12b3a4);transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,155,142,.42);color:#02201d}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(15,155,142,.3)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.38)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.6);transform:translateY(-2px);color:#fff}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);box-shadow:var(--shadow-sm);color:var(--brand-deep)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px}
.btn-block{width:100%}
.btn:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,a:focus-visible{
  outline:3px solid rgba(18,179,164,.55);outline-offset:3px;
}

/* ============ article hero ============ */
.article-hero{
  position:relative;isolation:isolate;overflow:hidden;
  padding:150px 0 76px;color:#fff;
  background:var(--dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(880px 420px at 22% 0%,rgba(18,179,164,.30),transparent 70%),
    linear-gradient(180deg,rgba(6,22,20,.82) 0%,rgba(6,22,20,.90) 55%,#0b1f1d 100%);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:22px}
.crumb a:hover{color:#7ee4d8}
.crumb span.sep{color:rgba(255,255,255,.3)}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:999px;
  background:rgba(126,228,216,.14);border:1px solid rgba(126,228,216,.4);
  color:#a9f0e7;font-size:13px;font-weight:600;letter-spacing:.06em;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#39e0cd;box-shadow:0 0 0 4px rgba(57,224,205,.18);display:inline-block}
.article-hero h1{
  margin:20px 0 0;max-width:900px;
  font-size:clamp(26px,3.6vw,42px);font-weight:800;line-height:1.3;
  text-shadow:0 2px 22px rgba(0,0,0,.32);
}
.article-lead{
  margin-top:20px;max-width:820px;
  font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.80);
}
.article-meta{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:13.5px;color:rgba(255,255,255,.66);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta b{color:#7ee4d8;font-weight:600}
.hero-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:500;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.85);
}
.tag-solid{background:var(--brand-soft);border-color:transparent;color:var(--brand-deep)}

/* ============ section base ============ */
.section{padding:var(--space) 0;position:relative}
.section-tight{padding:52px 0}
.section-alt{background:var(--surface-2)}
.section-dark{background:var(--dark);color:#fff}
.section-head{max-width:760px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--brand-deep);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--ink)}
.section-dark .section-title{color:#fff}
.section-desc{margin-top:12px;font-size:15px;line-height:1.8;color:var(--muted)}
.section-dark .section-desc{color:rgba(255,255,255,.68)}

/* ============ cards ============ */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card-ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:15px;
  margin-bottom:16px;letter-spacing:.02em;
}
.card h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px}
.card p{font-size:14.5px;line-height:1.78;color:var(--muted)}
.card-tag{
  display:inline-block;margin-top:14px;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:var(--brand-soft);color:var(--brand-deep);
}

/* ============ article body ============ */
.reader-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}
.article-panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:44px 46px;
}
.article-body{font-size:16.5px;line-height:1.88;color:var(--ink-soft)}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:23px;font-weight:800;color:var(--ink);
  margin:36px 0 14px;padding-left:14px;border-left:4px solid var(--brand);line-height:1.45;
}
.article-body h3{font-size:18.5px;font-weight:700;color:var(--ink);margin:26px 0 10px}
.article-body h4{font-size:16.5px;font-weight:700;color:var(--ink);margin:20px 0 8px}
.article-body p{margin:0 0 16px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body ul li{list-style:disc;margin-bottom:8px}
.article-body ol li{list-style:decimal;margin-bottom:8px}
.article-body li::marker{color:var(--brand)}
.article-body strong{color:var(--ink);font-weight:700}
.article-body em{font-style:normal;color:var(--brand-deep);font-weight:600}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body img{border-radius:var(--radius);margin:20px 0;box-shadow:var(--shadow-sm)}
.article-body blockquote{
  margin:22px 0;padding:18px 22px;border-left:4px solid var(--accent);
  background:var(--surface-2);border-radius:0 var(--radius) var(--radius) 0;
  color:var(--ink-soft);font-size:15.5px;
}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;background:#fff}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--surface-2);font-weight:700;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:24px;margin-bottom:20px;
}
.aside-card h3{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.aside-card h3::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--brand);display:inline-block}
.check-list li{
  display:flex;gap:10px;font-size:14.5px;color:var(--ink-soft);
  line-height:1.7;padding:9px 0;border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--brand);margin-top:9px;
}
.aside-cta{
  background:linear-gradient(150deg,#0f2a27,#0b1f1d);color:#fff;
  border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-md);
}
.aside-cta h3{font-size:17px;font-weight:700;margin-bottom:10px;color:#fff}
.aside-cta p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin-bottom:18px}

/* ============ empty state ============ */
.article-empty{
  background:var(--surface);border:1px dashed var(--line-strong);
  border-radius:var(--radius-lg);padding:64px 32px;text-align:center;box-shadow:var(--shadow-xs);
}
.article-empty h2{font-size:22px;font-weight:800;color:var(--ink);margin-bottom:12px}
.article-empty p{font-size:15px;color:var(--muted);margin-bottom:24px}

/* ============ stats ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.stat-item{padding:26px 22px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{font-size:30px;font-weight:800;color:var(--brand-deep);line-height:1.15;letter-spacing:-.02em}
.stat-num small{font-size:14px;font-weight:700;margin-left:3px;color:var(--brand)}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.6}

/* ============ channel cards ============ */
.channel-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.channel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.channel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.channel-card:hover .channel-thumb img{transform:scale(1.045)}
.channel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,31,29,0) 40%,rgba(10,31,29,.55) 100%)}
.channel-body{padding:22px}
.channel-body h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:8px}
.channel-body p{font-size:14.5px;line-height:1.75;color:var(--muted)}
.channel-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:13.5px;font-weight:700;color:var(--brand-deep);
}
.channel-card:hover .channel-more{color:var(--brand)}

/* ============ faq ============ */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-xs);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-size:16px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-deep);
  font-size:17px;font-weight:700;line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg)}
.faq-answer{padding:0 22px 20px;font-size:14.8px;line-height:1.85;color:var(--muted)}

/* ============ cta ============ */
.cta-band{
  position:relative;isolation:isolate;overflow:hidden;
  background:var(--dark) url('/assets/images/backpic/back-5.webp') center/cover no-repeat;
  color:#fff;border-radius:var(--radius-lg);padding:52px 46px;
  box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(6,22,20,.94) 0%,rgba(8,42,38,.86) 55%,rgba(10,60,54,.72) 100%);
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-text{max-width:640px}
.cta-text h2{font-size:clamp(21px,2.5vw,28px);font-weight:800;color:#fff}
.cta-text p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.76)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:60px 0 0;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .brand{margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);max-width:340px}
.footer-col h3{font-size:14.5px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a,.footer-col ul li{font-size:14px;color:rgba(255,255,255,.6);line-height:1.7}
.footer-col ul li a:hover{color:#7ee4d8}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
  padding:22px 0;font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ responsive ============ */
@media (max-width:1024px){
  :root{--space:60px}
  .reader-layout{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .article-panel{padding:34px}
  .cta-band{padding:40px 32px}
}
@media (max-width:991px){
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;top:calc(100% + 6px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;
    padding:14px 18px 18px;
    background:rgba(8,26,24,.98);
    border:1px solid rgba(255,255,255,.1);
    border-radius:0 0 14px 14px;
    box-shadow:0 22px 44px rgba(5,20,18,.42);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{padding:12px 16px;border-radius:10px;min-height:44px;display:flex;align-items:center;font-size:15.5px}
  .nav-actions{margin-left:auto}
}
@media (max-width:768px){
  :root{--space:48px}
  .nav-wrap{height:64px;gap:12px}
  .brand-text{font-size:16px}
  .brand-sub{font-size:10px;letter-spacing:.12em}
  .nav-actions .btn-sm{display:none}
  .article-hero{padding:118px 0 58px}
  .article-hero h1{font-size:clamp(23px,6vw,30px)}
  .article-lead{font-size:14.5px}
  .article-meta{font-size:13px;gap:8px 16px}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .section-head{margin-bottom:26px}
  .article-panel{padding:26px 20px}
  .article-body{font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:20px;margin-top:28px}
  .article-body table{font-size:13.5px}
  .article-body th,.article-body td{padding:9px 10px}
  .stat-strip{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 160px}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .footer-bottom{flex-direction:column}
  .site-footer{padding-top:44px}
}
@media (max-width:520px){
  .container{width:min(1180px,94%)}
  .hero-tags{gap:8px}
  .tag{font-size:12px;padding:5px 11px}
  .article-empty{padding:44px 20px}
  .faq-item summary{font-size:15px;padding:16px 16px}
  .faq-answer{padding:0 16px 18px}
  .cta-band{padding:32px 22px}
  .stat-item{padding:20px 18px}
}

/* roulang page: category1 */
:root{
 --bg:#f2f6f5;
 --surface:#ffffff;
 --surface-2:#eaf1f0;
 --ink:#0f2321;
 --ink-soft:#314a47;
 --muted:#617773;
 --brand:#12b3a4;
 --brand-deep:#0a7f75;
 --brand-soft:#e0f4f1;
 --accent:#d99a3f;
 --line:#dfe9e7;
 --line-strong:#c8d8d5;
 --dark:#0b1f1d;
 --dark-2:#102a27;
 --radius-sm:8px;
 --radius:12px;
 --radius-lg:16px;
 --shadow-xs:0 1px 2px rgba(15,35,33,.05);
 --shadow-sm:0 6px 18px rgba(15,35,33,.07);
 --shadow-md:0 14px 34px rgba(15,35,33,.11);
 --shadow-lg:0 26px 60px rgba(8,26,24,.20);
 --space:76px;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
 font-size:16px;line-height:1.78;color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
img{display:block;max-width:100%;height:auto}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:min(1180px,92%);margin:0 auto}
::selection{background:rgba(18,179,164,.24)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(18,179,164,.55);outline-offset:3px;border-radius:6px}

/* ============ header ============ */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1040;
 background:rgba(9,28,26,.30);
 -webkit-backdrop-filter:blur(16px) saturate(150%);
 backdrop-filter:blur(16px) saturate(150%);
 border-bottom:1px solid rgba(255,255,255,.14);
 transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
 background:rgba(8,26,24,.95);
 border-bottom-color:rgba(255,255,255,.07);
 box-shadow:0 12px 32px rgba(5,20,18,.32);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:38px;height:38px;border-radius:11px;
 display:grid;place-items:center;
 background:linear-gradient(150deg,#19c9b7,#0a7f75);
 color:#03211e;font-weight:800;font-size:19px;letter-spacing:0;
 box-shadow:0 6px 16px rgba(10,127,117,.42);
}
.brand-text{color:#fff;font-weight:700;font-size:18px;letter-spacing:.02em}
.brand-sub{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.16em;line-height:1.2}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav-link{
 color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
 padding:8px 15px;border-radius:999px;line-height:1.4;
 transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.11)}
.nav-link.active{color:#04211f;background:#7ee4d8;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:10px;
 border:1px solid rgba(255,255,255,.22);
 background:rgba(255,255,255,.08);
 align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ buttons ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:var(--radius-sm);
 font-size:15px;font-weight:600;line-height:1.3;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
 min-height:44px;
}
.btn-primary{background:linear-gradient(135deg,#19c9b7,#0f9b8e);color:#032521;box-shadow:0 10px 24px rgba(15,155,142,.32)}
.btn-primary:hover{background:linear-gradient(135deg,#25dbc8,#12b3a4);transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,155,142,.42);color:#02201d}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(15,155,142,.3)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.38)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.6);transform:translateY(-2px);color:#fff}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);box-shadow:var(--shadow-sm);color:var(--brand-deep)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px}
.btn-block{width:100%}

/* ============ page hero ============ */
.page-hero{
 position:relative;isolation:isolate;overflow:hidden;
 padding:152px 0 84px;
 background:var(--dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
 color:#fff;
}
.page-hero::before{
 content:"";position:absolute;inset:0;z-index:-1;
 background:
 radial-gradient(820px 420px at 88% 6%,rgba(18,179,164,.32),transparent 68%),
 linear-gradient(180deg,rgba(6,22,20,.86) 0%,rgba(6,22,20,.93) 58%,#0b1f1d 100%);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.55);margin-bottom:20px}
.crumb a{color:rgba(255,255,255,.75)}
.crumb a:hover{color:#7ee4d8}
.crumb .sep{color:rgba(255,255,255,.32)}
.crumb .current{color:#a9f0e7;font-weight:600}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:52px;align-items:center}
.hero-badge{
 display:inline-flex;align-items:center;gap:9px;
 padding:7px 16px;border-radius:999px;
 background:rgba(126,228,216,.14);border:1px solid rgba(126,228,216,.4);
 color:#a9f0e7;font-size:13px;font-weight:600;letter-spacing:.06em;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#39e0cd;box-shadow:0 0 0 4px rgba(57,224,205,.18);display:inline-block}
.page-hero h1{
 margin:20px 0 0;max-width:720px;
 font-size:clamp(27px,3.8vw,42px);font-weight:800;letter-spacing:-.02em;line-height:1.3;
}
.page-hero h1 em{font-style:normal;color:#7ee4d8}
.hero-lead{margin-top:20px;max-width:640px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.8)}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.tag{
 display:inline-flex;align-items:center;gap:6px;
 padding:6px 14px;border-radius:999px;
 font-size:13px;font-weight:500;
 background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.85);
}
.tag-solid{background:var(--brand-soft);border-color:transparent;color:var(--brand-deep);font-weight:600}
.tag-line{background:#fff;border-color:var(--line-strong);color:var(--ink-soft)}
/* hero visual */
.hero-visual{position:relative}
.visual-frame{
 position:relative;border-radius:20px;overflow:hidden;
 aspect-ratio:4/5;max-height:470px;
 border:1px solid rgba(255,255,255,.22);
 box-shadow:var(--shadow-lg);
 background:var(--dark-2);
}
.visual-frame img{width:100%;height:100%;object-fit:cover;opacity:.92}
.visual-frame::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(6,22,20,.15) 0%,rgba(6,22,20,.05) 40%,rgba(6,22,20,.82) 100%);
}
.visual-chip{
 position:absolute;z-index:2;
 display:inline-flex;align-items:center;gap:8px;
 padding:8px 14px;border-radius:999px;
 font-size:12.5px;font-weight:600;letter-spacing:.02em;
 background:rgba(8,26,24,.72);border:1px solid rgba(126,228,216,.42);
 color:#d5f6f1;backdrop-filter:blur(8px);
}
.visual-chip.top{top:16px;left:16px}
.visual-panel{
 position:absolute;z-index:2;left:16px;right:16px;bottom:16px;
 background:rgba(8,26,24,.82);backdrop-filter:blur(10px);
 border:1px solid rgba(126,228,216,.28);
 border-radius:14px;padding:14px 16px;
 display:grid;grid-template-columns:auto 1fr;gap:6px 14px;align-items:center;
}
.visual-panel .vp-num{font-size:26px;font-weight:800;color:#7ee4d8;line-height:1}
.visual-panel .vp-label{font-size:12px;letter-spacing:.1em;color:rgba(255,255,255,.6)}
.visual-panel .vp-text{grid-column:1 / -1;font-size:12.5px;color:rgba(255,255,255,.78);line-height:1.6;margin-top:4px}

/* ============ sections ============ */
.section{padding:var(--space) 0}
.section-alt{background:var(--surface-2)}
.section-dark{background:var(--dark);color:#fff}
.section-head{max-width:780px;margin-bottom:34px}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;font-weight:700;letter-spacing:.16em;
 color:var(--brand-deep);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-dark .eyebrow{color:#7ee4d8}
.section-dark .eyebrow::before{background:#7ee4d8}
.section h2{
 margin:14px 0 12px;
 font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.01em;line-height:1.36;
}
.section .lead{font-size:15px;color:var(--muted);line-height:1.82}
.section-dark .lead{color:rgba(255,255,255,.74)}

/* cards */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{
 background:var(--surface);
 border:1px solid var(--line);
 border-radius:var(--radius);
 box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
 height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card-body{padding:22px 22px 24px}
.card-title{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px}
.card-text{font-size:14.5px;color:var(--muted);line-height:1.78}
.card-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.icon-dot{
 width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand-deep);
 font-weight:800;font-size:15px;margin-bottom:14px;
}
.media-card{overflow:hidden}
.media-card img{
 width:100%;aspect-ratio:16/10;object-fit:cover;
 transition:transform .35s ease;
}
.media-card:hover img{transform:scale(1.04)}
.media-card .card-body{padding-top:18px}
.num-badge{
 display:inline-flex;align-items:center;justify-content:center;
 width:30px;height:30px;border-radius:9px;
 background:var(--brand-soft);color:var(--brand-deep);
 font-size:13px;font-weight:800;margin-bottom:12px;
}

/* pain list */
.pain-item{
 display:flex;gap:16px;align-items:flex-start;
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:20px 22px;
 box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
 height:100%;
}
.pain-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--line-strong)}
.pain-item .p-mark{
 flex-shrink:0;width:34px;height:34px;border-radius:10px;
 display:grid;place-items:center;
 background:#fdf3e3;color:#a9722a;font-weight:800;font-size:14px;
 border:1px solid #f2e0c4;
}
.pain-item h3{font-size:16px;font-weight:700;margin-bottom:6px;line-height:1.5}
.pain-item p{font-size:14px;color:var(--muted);line-height:1.76}

/* steps */
.step-flow{display:grid;gap:16px;max-width:920px}
.step{
 position:relative;display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 24px 20px 20px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateX(4px);box-shadow:var(--shadow-sm);border-color:var(--line-strong)}
.step-idx{
 width:52px;height:52px;border-radius:14px;
 display:grid;place-items:center;
 background:linear-gradient(150deg,#19c9b7,#0a7f75);color:#03211e;
 font-weight:800;font-size:16px;letter-spacing:.02em;
 box-shadow:0 8px 18px rgba(10,127,117,.28);
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:6px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.78}
.step .step-tag{
 display:inline-block;margin-top:10px;
 font-size:12.5px;font-weight:600;color:var(--brand-deep);
 background:var(--brand-soft);padding:4px 12px;border-radius:999px;
}

/* stat strip */
.stat-strip{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
 border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-lg);
 overflow:hidden;background:rgba(255,255,255,.04);
}
.stat{padding:26px 22px;border-right:1px solid rgba(255,255,255,.12)}
.stat:last-child{border-right:0}
.stat .s-num{font-size:30px;font-weight:800;color:#7ee4d8;line-height:1.1;letter-spacing:-.02em}
.stat .s-num span{font-size:15px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.6)}
.stat .s-label{margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.68);line-height:1.6}

/* faq */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-xs);
 transition:box-shadow .2s ease,border-color .2s ease;
 overflow:hidden;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-sm)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 54px 18px 22px;
 font-size:16px;font-weight:700;line-height:1.6;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"";position:absolute;right:22px;top:50%;
 width:11px;height:11px;border-right:2px solid var(--brand-deep);border-bottom:2px solid var(--brand-deep);
 transform:translateY(-70%) rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.82}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.news-card{
 display:flex;gap:18px;
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:16px;
 box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--line-strong)}
.news-thumb{flex-shrink:0;width:132px;border-radius:10px;overflow:hidden;background:var(--surface-2)}
.news-thumb img{width:100%;height:100%;min-height:96px;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{min-width:0}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:6px}
.news-cat{color:var(--brand-deep);font-weight:700;background:var(--brand-soft);padding:2px 10px;border-radius:999px}
.news-body h3{font-size:16px;font-weight:700;line-height:1.55;margin-bottom:6px}
.news-body h3 a:hover{color:var(--brand-deep)}
.news-body p{font-size:13.5px;color:var(--muted);line-height:1.72;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-note{
 padding:26px;border:1px dashed var(--line-strong);border-radius:var(--radius);
 color:var(--muted);font-size:14.5px;background:var(--surface);
}

/* cta band */
.cta-band{
 position:relative;isolation:isolate;overflow:hidden;
 border-radius:var(--radius-lg);
 padding:46px 44px;
 background:linear-gradient(140deg,#0d2b28 0%,#0f4a44 58%,#0a7f75 100%);
 color:#fff;box-shadow:var(--shadow-md);
 display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
}
.cta-band::after{
 content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
 background:radial-gradient(circle,rgba(126,228,216,.32),transparent 68%);z-index:-1;
}
.cta-band h2{font-size:clamp(21px,2.4vw,27px);font-weight:800;line-height:1.4;margin-bottom:10px}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.78);line-height:1.8;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:62px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.82;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:14px}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a:hover{color:#7ee4d8}
.footer-col li{font-size:14px;color:rgba(255,255,255,.6)}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.12);
 padding:18px 0 22px;display:flex;flex-wrap:wrap;gap:10px 24px;
 justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ responsive ============ */
@media (max-width:1024px){
 :root{--space:60px}
 .hero-grid{grid-template-columns:minmax(0,1fr) 280px;gap:36px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
 .footer-brand{grid-column:1 / -1}
 .cta-band{grid-template-columns:1fr;gap:24px}
}
@media (max-width:991px){
 .main-nav{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  flex-direction:column;align-items:stretch;gap:4px;
  padding:14px 16px 18px;
  background:rgba(8,26,24,.98);
  border:1px solid rgba(255,255,255,.1);
  border-radius:14px;
  box-shadow:var(--shadow-lg);
  display:none;
 }
 .main-nav.is-open{display:flex}
 .nav-toggle{display:flex}
 .nav-link{padding:12px 14px;font-size:15px;border-radius:10px}
 .nav-actions{margin-left:auto}
 .page-hero{padding:126px 0 68px}
 .hero-grid{grid-template-columns:1fr;gap:32px}
 .hero-visual{max-width:360px}
 .grid-2,.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .news-grid{grid-template-columns:1fr}
 .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .stat:nth-child(2){border-right:0}
 .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid rgba(255,255,255,.12)}
}
@media (max-width:768px){
 :root{--space:48px}
 .page-hero{padding:118px 0 54px}
 .hero-lead{font-size:15px}
 .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
 .step{grid-template-columns:52px minmax(0,1fr);gap:16px;padding:18px}
 .step-idx{width:44px;height:44px;font-size:14px;border-radius:12px}
 .cta-band{padding:30px 24px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
 .nav-actions .btn{padding:8px 14px;font-size:13px}
 .news-card{flex-direction:column}
 .news-thumb{width:100%}
 .news-thumb img{min-height:150px}
}
@media (max-width:520px){
 .container{width:94%}
 .brand-text{font-size:16px}
 .brand-sub{font-size:10px;letter-spacing:.12em}
 .hero-actions .btn{width:100%}
 .stat-strip{grid-template-columns:1fr}
 .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.12)}
 .stat:last-child{border-bottom:0}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{font-size:12.5px}
 .faq-item summary{font-size:15px;padding:16px 48px 16px 18px}
 .faq-item .faq-body{padding:0 18px 18px}
 .pain-item{padding:18px}
}

/* roulang page: category2 */
:root{
 --bg:#f2f6f5;
 --surface:#ffffff;
 --surface-2:#eaf1f0;
 --ink:#0f2321;
 --ink-soft:#314a47;
 --muted:#617773;
 --brand:#12b3a4;
 --brand-deep:#0a7f75;
 --brand-soft:#e0f4f1;
 --accent:#d99a3f;
 --line:#dfe9e7;
 --line-strong:#c8d8d5;
 --dark:#0b1f1d;
 --dark-2:#102a27;
 --radius-sm:8px;
 --radius:12px;
 --radius-lg:16px;
 --shadow-xs:0 1px 2px rgba(15,35,33,.05);
 --shadow-sm:0 6px 18px rgba(15,35,33,.07);
 --shadow-md:0 14px 34px rgba(15,35,33,.11);
 --shadow-lg:0 26px 60px rgba(8,26,24,.20);
 --space:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
 font-size:16px;line-height:1.78;color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p{margin:0}
ul{list-style:none;margin:0;padding:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
img{display:block;max-width:100%;height:auto}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
.container{width:min(1180px,92%);margin:0 auto}

/* ============ header ============ */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1040;
 background:rgba(9,28,26,.30);
 -webkit-backdrop-filter:blur(16px) saturate(150%);
 backdrop-filter:blur(16px) saturate(150%);
 border-bottom:1px solid rgba(255,255,255,.14);
 transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
 background:rgba(8,26,24,.95);
 border-bottom-color:rgba(255,255,255,.07);
 box-shadow:0 12px 32px rgba(5,20,18,.32);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:38px;height:38px;border-radius:11px;
 display:grid;place-items:center;
 background:linear-gradient(150deg,#19c9b7,#0a7f75);
 color:#03211e;font-weight:800;font-size:19px;letter-spacing:0;
 box-shadow:0 6px 16px rgba(10,127,117,.42);
}
.brand-text{color:#fff;font-weight:700;font-size:18px;letter-spacing:.02em}
.brand-sub{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.16em;line-height:1.2}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav-link{
 color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
 padding:8px 15px;border-radius:999px;line-height:1.4;
 transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.11)}
.nav-link.active{color:#04211f;background:#7ee4d8;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:10px;
 border:1px solid rgba(255,255,255,.22);
 background:rgba(255,255,255,.08);
 align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ buttons ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:var(--radius-sm);
 font-size:15px;font-weight:600;line-height:1.3;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
 min-height:44px;
}
.btn-primary{background:linear-gradient(135deg,#19c9b7,#0f9b8e);color:#032521;box-shadow:0 10px 24px rgba(15,155,142,.32)}
.btn-primary:hover{background:linear-gradient(135deg,#25dbc8,#12b3a4);transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,155,142,.42);color:#02201d}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(15,155,142,.3)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.38)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.6);transform:translateY(-2px);color:#fff}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);box-shadow:var(--shadow-sm);color:var(--brand-deep)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px}
.btn-block{width:100%}

/* ============ hero ============ */
.hero{
 position:relative;isolation:isolate;
 padding:150px 0 88px;
 background:var(--dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
 color:#fff;overflow:hidden;
}
.hero::before{
 content:"";position:absolute;inset:0;z-index:-1;
 background:
 radial-gradient(900px 420px at 22% 8%,rgba(18,179,164,.30),transparent 68%),
 linear-gradient(180deg,rgba(6,22,20,.84) 0%,rgba(6,22,20,.92) 55%,#0b1f1d 100%);
}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.hero-badge{
 display:inline-flex;align-items:center;gap:9px;
 padding:7px 16px;border-radius:999px;
 background:rgba(126,228,216,.14);border:1px solid rgba(126,228,216,.4);
 color:#a9f0e7;font-size:13px;font-weight:600;letter-spacing:.06em;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#39e0cd;box-shadow:0 0 0 4px rgba(57,224,205,.18);display:inline-block}
.hero h1{
 margin-top:20px;
 font-size:clamp(27px,3.6vw,42px);font-weight:800;letter-spacing:-.02em;line-height:1.3;
 text-shadow:0 2px 24px rgba(0,0,0,.32);
}
.hero h1 em{font-style:normal;color:#7ee4d8}
.hero-lead{
 margin-top:20px;max-width:620px;
 font-size:16px;line-height:1.88;color:rgba(255,255,255,.82);
}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.tag{
 display:inline-flex;align-items:center;gap:6px;
 padding:6px 14px;border-radius:999px;
 font-size:13px;font-weight:500;
 background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.85);
}

/* quiz panel */
.quiz-card{
 background:rgba(255,255,255,.08);
 border:1px solid rgba(255,255,255,.2);
 -webkit-backdrop-filter:blur(14px);
 backdrop-filter:blur(14px);
 border-radius:var(--radius-lg);
 padding:26px;
 box-shadow:var(--shadow-lg);
}
.quiz-eyebrow{font-size:12px;letter-spacing:.18em;font-weight:700;color:#7ee4d8}
.quiz-title{font-size:20px;font-weight:800;margin-top:8px;line-height:1.4}
.quiz-sub{font-size:13.5px;color:rgba(255,255,255,.7);margin-top:8px;line-height:1.75}
.quiz-options{display:grid;gap:9px;margin-top:18px}
.quiz-option{
 display:flex;gap:10px;align-items:flex-start;text-align:left;width:100%;
 padding:11px 14px;border-radius:10px;
 border:1px solid rgba(255,255,255,.18);
 background:rgba(255,255,255,.05);
 color:rgba(255,255,255,.86);font-size:14px;line-height:1.6;
 transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
 min-height:44px;
}
.quiz-option:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.4);transform:translateY(-1px)}
.quiz-option.is-active{background:#7ee4d8;color:#04211f;border-color:#7ee4d8;font-weight:600}
.quiz-option b{font-weight:800;opacity:.75}
.quiz-result{
 margin-top:16px;padding:14px 16px;border-radius:12px;
 background:rgba(6,22,20,.52);
 border:1px dashed rgba(255,255,255,.26);
 font-size:14px;line-height:1.78;color:rgba(255,255,255,.86);
}
.quiz-result strong{color:#7ee4d8;font-weight:700}

/* ============ sections ============ */
.section{padding:calc(var(--space) * .92) 0}
.section--alt{background:var(--surface-2)}
.section--tight{padding:calc(var(--space) * .72) 0}
.section-head{max-width:840px;margin-bottom:34px}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;font-weight:700;letter-spacing:.16em;
 color:var(--brand-deep);text-transform:uppercase;
}
.section-kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{font-size:clamp(22px,2.5vw,30px);font-weight:800;letter-spacing:-.01em;margin-top:12px;line-height:1.36}
.section-desc{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.85}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* cards */
.info-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px;height:100%;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card-index{
 display:inline-flex;align-items:center;
 padding:4px 11px;border-radius:999px;
 background:var(--brand-soft);color:var(--brand-deep);
 font-size:12px;font-weight:700;letter-spacing:.1em;
}
.card-title{font-size:18px;font-weight:700;margin-top:14px;line-height:1.5}
.card-text{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.8}
.card-tag{
 display:inline-block;margin-top:16px;padding:4px 11px;border-radius:6px;
 font-size:12.5px;font-weight:600;
 background:var(--surface-2);color:var(--ink-soft);border:1px solid var(--line);
}

/* split */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:center}
.split-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--line);background:var(--surface)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.bullet-list{margin-top:22px;display:grid;gap:16px}
.bullet{display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:start}
.bullet-num{
 width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:14px;
}
.bullet h4{font-size:16.5px;font-weight:700;line-height:1.5}
.bullet p{color:var(--muted);font-size:14.5px;line-height:1.8;margin-top:4px}

/* steps */
.step-list{display:grid;gap:16px}
.step{
 display:grid;grid-template-columns:74px 1fr;gap:20px;align-items:start;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 24px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.step-num{font-size:26px;font-weight:800;color:var(--brand);line-height:1.1;letter-spacing:-.02em}
.step h3{font-size:17.5px;font-weight:700;line-height:1.5}
.step p{color:var(--muted);font-size:14.5px;line-height:1.8;margin-top:6px}

/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 22px;box-shadow:var(--shadow-xs);text-align:left;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:var(--brand)}
.stat-num{font-size:30px;font-weight:800;color:var(--brand-deep);line-height:1.2;letter-spacing:-.02em}
.stat-num small{font-size:15px;font-weight:700;margin-left:3px}
.stat-label{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7}

/* quotes */
.quote-card{
 background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brand);
 border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-xs);height:100%;
 transition:transform .2s ease,box-shadow .2s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.quote-text{font-size:15px;line-height:1.85;color:var(--ink-soft)}
.quote-meta{margin-top:16px;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px}
.quote-meta span{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}

/* plan compare */
.plan-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px;height:100%;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.plan-name{font-size:18px;font-weight:800}
.plan-sub{font-size:13px;color:var(--brand-deep);font-weight:600;margin-top:6px;letter-spacing:.04em}
.plan-rows{margin-top:16px;display:grid;gap:10px}
.plan-row{display:flex;justify-content:space-between;gap:12px;font-size:14px;border-bottom:1px dashed var(--line);padding-bottom:9px}
.plan-row:last-child{border-bottom:0;padding-bottom:0}
.plan-row span{color:var(--muted)}
.plan-row strong{font-weight:700;color:var(--ink)}

/* faq */
.faq-list{display:grid;gap:14px}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:0 22px;box-shadow:var(--shadow-xs);
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-sm)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 0;
 font-weight:700;font-size:16px;line-height:1.6;
 display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:21px;color:var(--brand-deep);flex-shrink:0;transition:transform .2s ease}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 0 20px;margin:0;color:var(--muted);font-size:15px;line-height:1.85}

/* cta band */
.cta-band{
 position:relative;isolation:isolate;overflow:hidden;
 background:linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 100%);
 border-radius:var(--radius-lg);padding:46px 44px;color:#fff;
 box-shadow:var(--shadow-lg);
}
.cta-band::before{
 content:"";position:absolute;inset:0;z-index:-1;
 background:radial-gradient(600px 300px at 88% 0%,rgba(18,179,164,.26),transparent 70%);
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:800;line-height:1.4;max-width:640px}
.cta-band p{margin-top:14px;max-width:680px;color:rgba(255,255,255,.78);font-size:15px;line-height:1.85}
.calc-form{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end;margin-top:26px}
.field{flex:1 1 240px}
.field label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.72);margin-bottom:8px}
.field input{
 width:100%;padding:13px 16px;border-radius:10px;min-height:48px;
 border:1px solid rgba(255,255,255,.28);
 background:rgba(255,255,255,.1);color:#fff;font-size:16px;
 transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:rgba(255,255,255,.45)}
.field input:focus{outline:none;border-color:#7ee4d8;background:rgba(255,255,255,.16);box-shadow:0 0 0 3px rgba(126,228,216,.24)}
.calc-out{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.calc-cell{
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
 border-radius:12px;padding:16px 18px;
 transition:background .2s ease,border-color .2s ease;
}
.calc-cell:hover{background:rgba(255,255,255,.12);border-color:rgba(126,228,216,.5)}
.calc-cell span{display:block;font-size:13px;color:rgba(255,255,255,.66);line-height:1.6}
.calc-cell strong{display:block;font-size:25px;font-weight:800;color:#7ee4d8;margin-top:6px;letter-spacing:-.01em}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:62px 0 26px;border-top:1px solid rgba(255,255,255,.09)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.65);transition:color .2s ease}
.footer-col a:hover{color:#7ee4d8}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.6)}
.footer-bottom{
 margin-top:44px;padding-top:22px;
 border-top:1px solid rgba(255,255,255,.1);
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ responsive ============ */
@media (max-width:1024px){
 :root{--space:60px}
 .hero{padding:132px 0 76px}
 .hero-grid{grid-template-columns:1fr;gap:36px}
 .hero-lead{max-width:100%}
 .split{grid-template-columns:1fr;gap:32px}
 .grid-4{grid-template-columns:repeat(2,1fr)}
 .stat-grid{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .cta-band{padding:38px 30px}
}
@media (max-width:991px){
 .nav-toggle{display:flex}
 .main-nav{
  position:absolute;top:72px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:6px;
  padding:14px 16px 18px;
  background:rgba(8,26,24,.98);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 18px 40px rgba(5,20,18,.45);
  display:none;
 }
 .main-nav.is-open{display:flex}
 .nav-link{padding:12px 14px;border-radius:10px}
 .nav-actions{margin-left:auto}
 .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
 .hero{padding:120px 0 64px}
 .hero h1{font-size:26px}
 .quiz-card{padding:20px}
 .section{padding:52px 0}
 .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
 .stat-grid{grid-template-columns:repeat(2,1fr)}
 .step{grid-template-columns:1fr;gap:8px;padding:20px}
 .calc-out{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .cta-band{padding:32px 22px;border-radius:var(--radius)}
 .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
 .nav-wrap{height:64px}
 .main-nav{top:64px}
 .brand-text{font-size:16px}
 .brand-sub{font-size:10px;letter-spacing:.12em}
 .nav-actions .btn-sm{padding:8px 12px;font-size:13px}
 .stat-grid{grid-template-columns:1fr}
 .hero-tags{gap:8px}
 .tag{font-size:12px;padding:5px 11px}
 .section-title{font-size:21px}
}

/* roulang page: category3 */
:root{
 --bg:#f2f6f5;
 --surface:#ffffff;
 --surface-2:#eaf1f0;
 --ink:#0f2321;
 --ink-soft:#314a47;
 --muted:#617773;
 --brand:#12b3a4;
 --brand-deep:#0a7f75;
 --brand-soft:#e0f4f1;
 --accent:#d99a3f;
 --line:#dfe9e7;
 --line-strong:#c8d8d5;
 --dark:#0b1f1d;
 --dark-2:#102a27;
 --radius-sm:8px;
 --radius:12px;
 --radius-lg:16px;
 --shadow-xs:0 1px 2px rgba(15,35,33,.05);
 --shadow-sm:0 6px 18px rgba(15,35,33,.07);
 --shadow-md:0 14px 34px rgba(15,35,33,.11);
 --shadow-lg:0 26px 60px rgba(8,26,24,.20);
 --space:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
 font-size:16px;line-height:1.78;color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease}
img{display:block;max-width:100%;height:auto}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:min(1180px,92%);max-width:none;margin:0 auto;padding-left:0;padding-right:0}

/* ============ header ============ */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1040;
 background:rgba(9,28,26,.30);
 -webkit-backdrop-filter:blur(16px) saturate(150%);
 backdrop-filter:blur(16px) saturate(150%);
 border-bottom:1px solid rgba(255,255,255,.14);
 transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
 background:rgba(8,26,24,.95);
 border-bottom-color:rgba(255,255,255,.07);
 box-shadow:0 12px 32px rgba(5,20,18,.32);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:38px;height:38px;border-radius:11px;
 display:grid;place-items:center;
 background:linear-gradient(150deg,#19c9b7,#0a7f75);
 color:#03211e;font-weight:800;font-size:19px;letter-spacing:0;
 box-shadow:0 6px 16px rgba(10,127,117,.42);
}
.brand-text{color:#fff;font-weight:700;font-size:18px;letter-spacing:.02em}
.brand-sub{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.16em;line-height:1.2}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav-link{
 color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
 padding:8px 15px;border-radius:999px;line-height:1.4;
 transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.11)}
.nav-link.active{color:#04211f;background:#7ee4d8;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:10px;
 border:1px solid rgba(255,255,255,.22);
 background:rgba(255,255,255,.08);
 align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .22s ease,opacity .22s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ buttons ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:var(--radius-sm);
 font-size:15px;font-weight:600;line-height:1.3;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
 min-height:44px;
}
.btn-primary{background:linear-gradient(135deg,#19c9b7,#0f9b8e);color:#032521;box-shadow:0 10px 24px rgba(15,155,142,.32)}
.btn-primary:hover{background:linear-gradient(135deg,#25dbc8,#12b3a4);transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,155,142,.42);color:#02201d}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(15,155,142,.3)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.38)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.6);transform:translateY(-2px);color:#fff}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);box-shadow:var(--shadow-sm);color:var(--brand-deep)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px}
.btn-block{width:100%}
.btn:focus-visible,.nav-link:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid rgba(126,228,216,.55);outline-offset:2px}

/* ============ page hero ============ */
.page-hero{
 position:relative;isolation:isolate;overflow:hidden;
 padding:150px 0 88px;
 background:var(--dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
 color:#fff;
}
.page-hero::before{
 content:"";position:absolute;inset:0;z-index:-1;
 background:
 radial-gradient(760px 420px at 16% 6%,rgba(18,179,164,.30),transparent 68%),
 radial-gradient(620px 380px at 92% 92%,rgba(217,154,63,.16),transparent 70%),
 linear-gradient(180deg,rgba(6,22,20,.84) 0%,rgba(6,22,20,.93) 58%,#0b1f1d 100%);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);gap:46px;align-items:center}
.crumbs{font-size:13px;color:rgba(255,255,255,.58);letter-spacing:.04em;margin-bottom:16px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.crumbs a{color:rgba(255,255,255,.78)}
.crumbs a:hover{color:#7ee4d8}
.crumbs span{color:rgba(255,255,255,.32)}
.hero-badge{
 display:inline-flex;align-items:center;gap:9px;
 padding:7px 16px;border-radius:999px;
 background:rgba(126,228,216,.14);border:1px solid rgba(126,228,216,.4);
 color:#a9f0e7;font-size:13px;font-weight:600;letter-spacing:.06em;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#39e0cd;box-shadow:0 0 0 4px rgba(57,224,205,.18);display:inline-block}
.page-hero h1{
 margin:18px 0 0;
 font-size:clamp(27px,3.5vw,41px);font-weight:800;letter-spacing:-.02em;line-height:1.3;
 text-shadow:0 2px 22px rgba(0,0,0,.3);
}
.page-hero h1 em{font-style:normal;color:#7ee4d8}
.hero-lead{margin-top:18px;max-width:640px;font-size:15.5px;line-height:1.86;color:rgba(255,255,255,.82)}
.hero-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px}
.tag{
 display:inline-flex;align-items:center;gap:6px;
 padding:6px 14px;border-radius:999px;
 font-size:13px;font-weight:500;
 background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.85);
}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}
.hero-card{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-lg);padding:18px;
 -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
 box-shadow:var(--shadow-lg);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px;border:1px solid rgba(255,255,255,.14)}
.hero-card-body{padding:16px 4px 4px}
.hero-card-title{font-size:16px;font-weight:700;color:#fff;letter-spacing:.01em}
.hero-card-sub{font-size:12.5px;color:rgba(255,255,255,.55);letter-spacing:.1em;margin-top:4px}
.hero-card-list{margin-top:14px;display:grid;gap:10px}
.hero-card-list li{display:flex;gap:10px;font-size:13.5px;line-height:1.62;color:rgba(255,255,255,.82)}
.hero-card-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:#39e0cd;margin-top:8px;flex:none}

/* ============ sections ============ */
.section{padding:var(--space) 0}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-dark{background:var(--dark);color:#fff}
.section-head{max-width:780px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
 color:var(--brand-deep);margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-dark .eyebrow{color:#7ee4d8}
.section-dark .eyebrow::before{background:#7ee4d8}
.section-head h2{font-size:clamp(21px,2.5vw,29px);font-weight:800;letter-spacing:-.01em;line-height:1.35;color:var(--ink)}
.section-dark .section-head h2{color:#fff}
.section-head p{margin-top:12px;font-size:15px;line-height:1.82;color:var(--muted)}
.section-dark .section-head p{color:rgba(255,255,255,.72)}

/* ============ info cards ============ */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card-grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card-grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.info-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow-xs);height:100%;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card-icon{
 width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand-deep);margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px}
.card-icon.warn{background:#fbf1e2;color:#9a6b1f}
.info-card h3{font-size:17.5px;font-weight:700;line-height:1.5;color:var(--ink);margin-bottom:10px}
.info-card p{font-size:14.5px;line-height:1.8;color:var(--muted)}
.card-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.chip{
 display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
 font-size:12.5px;font-weight:600;background:var(--brand-soft);color:var(--brand-deep);
}
.chip-accent{background:#fbf1e2;color:#96671d}
.chip-plain{background:var(--surface-2);color:var(--ink-soft)}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step{
 position:relative;background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:28px 22px 24px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step::after{
 content:"";position:absolute;top:44px;right:-12px;width:12px;height:1px;
 background:var(--line-strong);
}
.step:last-child::after{display:none}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.step-num{
 font-size:30px;font-weight:800;line-height:1;color:var(--brand);
 letter-spacing:-.03em;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;line-height:1.78;color:var(--muted)}
.step-meta{margin-top:12px;font-size:12.5px;font-weight:600;color:var(--brand-deep);letter-spacing:.04em}

/* ============ compare ============ */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.compare-col{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:28px;box-shadow:var(--shadow-xs);
}
.compare-col.bad{border-color:#ecd9c8;background:#fdf8f3}
.compare-col.good{border-color:#bde6e0;background:#f3fbfa}
.compare-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.compare-dot{width:10px;height:10px;border-radius:50%;flex:none}
.compare-col.bad .compare-dot{background:#d99a3f}
.compare-col.good .compare-dot{background:var(--brand)}
.compare-col h3{font-size:18px;font-weight:800;letter-spacing:-.01em}
.compare-col .compare-note{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.compare-list{display:grid;gap:12px}
.compare-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.72;color:var(--ink-soft)}
.compare-list .mark{
 flex:none;width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
 font-size:12px;font-weight:800;line-height:1;margin-top:3px;
}
.compare-col.bad .mark{background:#f6e4d2;color:#a8712a}
.compare-col.good .mark{background:#d6f2ee;color:var(--brand-deep)}

/* ============ split ============ */
.split{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:46px;align-items:center}
.split-figure{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);background:var(--surface)}
.split-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-list{display:grid;gap:14px}
.split-item{
 display:flex;gap:14px;padding:18px 20px;background:var(--surface);
 border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.split-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--line-strong)}
.split-item .dot{
 flex:none;width:8px;height:8px;border-radius:50%;background:var(--brand);margin-top:9px;
}
.split-item h3{font-size:15.5px;font-weight:700;margin-bottom:4px}
.split-item p{font-size:14px;line-height:1.75;color:var(--muted)}

/* ============ metrics ============ */
.metrics-band{
 background:var(--dark);border-radius:var(--radius-lg);
 padding:44px 40px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;
 box-shadow:var(--shadow-md);position:relative;overflow:hidden;
}
.metrics-band::before{
 content:"";position:absolute;inset:0;
 background:radial-gradient(560px 300px at 12% 0%,rgba(18,179,164,.24),transparent 70%);
 pointer-events:none;
}
.metric{position:relative}
.metric-num{font-size:33px;font-weight:800;line-height:1.1;color:#7ee4d8;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.metric-num small{font-size:15px;font-weight:700;margin-left:4px;color:rgba(255,255,255,.6)}
.metric-label{margin-top:10px;font-size:13.5px;line-height:1.65;color:rgba(255,255,255,.72)}

/* ============ quotes ============ */
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.quote{
 background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brand);
 border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-xs);height:100%;
}
.quote p{font-size:14.5px;line-height:1.82;color:var(--ink-soft)}
.quote-foot{margin-top:16px;display:flex;align-items:center;gap:10px}
.quote-avatar{
 width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand-deep);font-weight:700;font-size:14px;flex:none;
}
.quote-name{font-size:13.5px;font-weight:700;color:var(--ink)}
.quote-role{font-size:12.5px;color:var(--muted)}

/* ============ post list ============ */
.post-list{display:grid;gap:14px}
.post-row{
 display:flex;align-items:center;gap:20px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:18px 22px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--brand)}
.post-body{flex:1;min-width:0}
.post-cat{
 display:inline-block;font-size:12px;font-weight:600;color:var(--brand-deep);
 background:var(--brand-soft);padding:3px 10px;border-radius:999px;margin-bottom:8px;
}
.post-row h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:6px;color:var(--ink)}
.post-row p{
 font-size:14px;line-height:1.72;color:var(--muted);
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-date{font-size:13px;color:var(--muted);white-space:nowrap;flex:none}
.list-empty{
 padding:26px;border:1px dashed var(--line-strong);border-radius:var(--radius);
 text-align:center;color:var(--muted);font-size:14.5px;background:var(--surface);
}
.list-more{margin-top:22px;text-align:center}

/* ============ faq ============ */
.faq{max-width:900px;margin:0 auto}
.faq .accordion-item{
 border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
 margin-bottom:12px;background:var(--surface);box-shadow:var(--shadow-xs);
}
.faq .accordion-button{
 font-weight:700;font-size:16px;color:var(--ink);background:var(--surface);
 padding:20px 22px;box-shadow:none;line-height:1.6;
}
.faq .accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand-deep)}
.faq .accordion-button:focus{box-shadow:inset 0 0 0 2px rgba(18,179,164,.35);border-color:transparent}
.faq .accordion-body{padding:4px 22px 22px;font-size:14.5px;line-height:1.82;color:var(--ink-soft);background:var(--surface)}
.faq .accordion-button::after{width:14px;height:14px;background-size:14px}

/* ============ cta ============ */
.cta-band{
 position:relative;isolation:isolate;overflow:hidden;
 border-radius:var(--radius-lg);padding:56px 48px;color:#fff;
 background:var(--dark) url('/assets/images/backpic/back-5.webp') center/cover no-repeat;
 box-shadow:var(--shadow-lg);
}
.cta-band::before{
 content:"";position:absolute;inset:0;z-index:-1;
 background:linear-gradient(120deg,rgba(6,22,20,.95) 0%,rgba(9,60,55,.86) 100%);
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);gap:36px;align-items:center}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:800;line-height:1.4;color:#fff}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.82;color:rgba(255,255,255,.78);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{
 display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
 padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .brand{margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.82;color:rgba(255,255,255,.62)}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;line-height:1.65;color:rgba(255,255,255,.66)}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a:hover{color:#7ee4d8}
.footer-bottom{
 display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
 padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ responsive ============ */
@media (max-width:1024px){
 :root{--space:60px}
 .hero-grid{grid-template-columns:1fr;gap:34px}
 .hero-card{max-width:560px}
 .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
 .step::after{display:none}
 .split{grid-template-columns:1fr;gap:32px}
 .metrics-band{grid-template-columns:repeat(2,minmax(0,1fr));padding:36px 28px}
 .quote-grid{grid-template-columns:1fr}
 .cta-inner{grid-template-columns:1fr}
 .cta-actions{justify-content:flex-start}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:960px){
 .nav-wrap{height:64px}
 .nav-toggle{display:inline-flex}
 .main-nav{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:4px;
  background:rgba(8,26,24,.98);padding:14px 18px 20px;
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 18px 40px rgba(4,18,16,.42);
  display:none;margin-left:0;
 }
 .main-nav.open{display:flex}
 .nav-link{padding:12px 14px;border-radius:10px;font-size:15px}
 .nav-actions{margin-left:auto}
 .page-hero{padding:120px 0 66px}
}
@media (max-width:768px){
 .container{width:92%}
 .card-grid,.card-grid.cols-2,.card-grid.cols-3{grid-template-columns:1fr}
 .steps{grid-template-columns:1fr}
 .compare{grid-template-columns:1fr}
 .metrics-band{grid-template-columns:1fr;gap:22px;padding:30px 24px}
 .post-row{flex-direction:column;align-items:flex-start;gap:10px}
 .post-date{white-space:normal}
 .cta-band{padding:36px 26px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:520px){
 .page-hero{padding:104px 0 54px}
 .page-hero h1{font-size:25px}
 .hero-lead{font-size:14.5px}
 .btn{width:100%}
 .hero-actions,.cta-actions{flex-direction:column;align-items:stretch}
 .nav-actions .btn{width:auto}
 .brand-text{font-size:16px}
 .brand-sub{font-size:10px;letter-spacing:.12em}
 .info-card,.step,.compare-col,.quote{padding:22px 18px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}