/* roulang page: index */
:root{
  --bg-900:#070D18;
  --bg-800:#0B1424;
  --bg-700:#101C33;
  --ink-100:#EAF2FB;
  --ink-300:#A9BACC;
  --ink-500:#70839B;
  --brand:#17C9AE;
  --brand-deep:#0FA88F;
  --accent:#FF8A3D;
  --danger:#FF5C6C;
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.10);
  --paper:#FFFFFF;
  --paper-ink:#16223A;
  --paper-ink-2:#4A5A72;
  --paper-line:#E6EBF2;
  --header-ink:#0E1A2B;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.08) inset, 0 18px 40px rgba(3,8,18,.45);
  --shadow-header:0 6px 20px rgba(10,20,40,.06);
  --sp-section:88px;
  --container:1200px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-100);
  background:var(--bg-900);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.nums{font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#FFFFFF;
  border-bottom:1px solid var(--paper-line);
  box-shadow:var(--shadow-header);
}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:72px;
}
.logo{display:flex;align-items:center;gap:10px;color:var(--header-ink);font-weight:700;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
.logo svg{flex:none}
.logo .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;margin-left:2px;transform:translateY(-1px)}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:26px;flex:1;min-width:0}
.main-nav a{
  position:relative;font-size:15px;color:#44506A;padding:6px 0;transition:color .18s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav a:hover{color:#0E1A2B}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:#0E1A2B;font-weight:700}
.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:#F1F5F9;border:1px solid transparent;
  border-radius:999px;padding:0 14px;height:40px;width:210px;
  transition:border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.search-box:focus-within{border-color:rgba(23,201,174,.6);background:#fff;box-shadow:0 0 0 3px rgba(23,201,174,.14)}
.search-box svg{flex:none;color:#8C9AAF}
.search-box input{
  border:none;background:transparent;outline:none;width:100%;
  font-size:14px;color:#0E1A2B;
}
.search-box input::placeholder{color:#8C9AAF}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;letter-spacing:.01em;
  transition:transform .16s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, opacity .2s ease;
  min-height:44px;padding:0 22px;font-size:15px;
}
.btn-primary{
  color:#04201C;background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 8px 24px rgba(23,201,174,.26);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#25d8bd,#12b89c);
  box-shadow:0 0 0 1px rgba(23,201,174,.5), 0 10px 30px rgba(23,201,174,.35);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  color:var(--ink-100);border:1px solid var(--glass-line);background:transparent;
}
.btn-ghost:hover{border-color:rgba(23,201,174,.55);color:#fff;background:rgba(23,201,174,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-accent{
  color:#2A1204;background:linear-gradient(135deg,#FFA264,var(--accent));
  box-shadow:0 10px 28px rgba(255,138,61,.28);
}
.btn-accent:hover{box-shadow:0 0 0 1px rgba(255,138,61,.5),0 12px 32px rgba(255,138,61,.36)}
.header-cta{min-height:40px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;background:#F1F5F9;color:#0E1A2B;
}
.nav-toggle:hover{background:#E7EDF5}

/* drawer */
.drawer{
  position:fixed;inset:60px 0 0;z-index:79;
  background:rgba(7,13,24,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:24px;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity .22s ease, transform .22s ease;
}
.drawer.open{opacity:1;transform:translateY(0);pointer-events:auto}
.drawer a{
  display:block;padding:14px 16px;border-radius:12px;
  font-size:16px;color:var(--ink-100);
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease;
}
.drawer a:hover,.drawer a.active{background:var(--glass);border-color:var(--glass-line)}
.drawer .drawer-cta{margin-top:16px}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 88px;
  background-color:var(--bg-800);
  background-image:
    linear-gradient(180deg,rgba(7,13,24,.55),rgba(7,13,24,.92)),
    radial-gradient(circle at 16% 10%,rgba(23,201,174,.20),transparent 46%),
    radial-gradient(circle at 84% 82%,rgba(255,138,61,.12),transparent 42%),
    url('/assets/images/backpic/back-1.webp');
  background-size:auto,auto,auto,cover;
  background-position:center,center,center,center;
  background-repeat:no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 36%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 36%,#000 25%,transparent 78%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(23,201,174,.35);
  background:rgba(23,201,174,.08);
  color:#8CEBDD;font-size:13px;font-weight:600;letter-spacing:.02em;
}
.hero h1{
  margin:20px 0 0;
  font-size:clamp(32px,4.4vw,48px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  color:#fff;
}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--brand),#7DF1DE 55%,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:20px;font-size:18px;line-height:1.8;color:var(--ink-300);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.trust-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
  font-size:13px;color:var(--ink-300);
}
.trust-pill i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}
.hero-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  padding:16px;
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.hero-card figure{margin:0;position:relative;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10}
.hero-card figure img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-md)}
.hero-card figure::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-md);
  background:linear-gradient(180deg,rgba(7,13,24,.05),rgba(7,13,24,.55));
}
.float-tag{
  position:absolute;top:-12px;right:18px;
  padding:7px 14px;border-radius:999px;
  background:rgba(255,138,61,.16);
  border:1px solid rgba(255,138,61,.5);
  color:#FFC79C;font-size:12px;font-weight:700;letter-spacing:.03em;
  backdrop-filter:blur(6px);
}
.float-stat{
  position:absolute;left:26px;bottom:-24px;
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;border-radius:14px;
  background:rgba(11,20,36,.9);
  border:1px solid rgba(23,201,174,.35);
  box-shadow:0 16px 34px rgba(3,8,18,.5);
}
.float-stat strong{font-size:22px;color:var(--brand);font-variant-numeric:tabular-nums}
.float-stat span{font-size:12px;color:var(--ink-300);line-height:1.5}

/* ============ section head ============ */
.sec-head{max-width:760px}
.sec-head .kicker{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
.sec-head h2{
  font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:#fff;letter-spacing:-.01em;
}
.sec-head p{margin-top:14px;color:var(--ink-300);font-size:16px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.link-more{color:var(--brand);font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease,color .2s ease}
.link-more:hover{gap:12px;color:#5FE6D2}

/* ============ pain cards ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:40px}
.pain-card{
  position:relative;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-md);padding:24px 24px 24px 28px;
  transition:border-color .22s ease, transform .22s ease, box-shadow .22s ease;
}
.pain-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(23,201,174,.15));
}
.pain-card h3{font-size:16px;font-weight:600;color:#fff;line-height:1.6}
.pain-card p{margin-top:8px;font-size:14px;color:var(--ink-300);line-height:1.75}
.pain-card:hover{border-color:rgba(23,201,174,.45);transform:translateY(-2px);box-shadow:0 18px 36px rgba(3,8,18,.4)}

/* ============ solution ============ */
.solution-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin-top:40px}
.sol-main{
  grid-column:span 6;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-lg);padding:20px;
  display:flex;flex-direction:column;gap:18px;
  transition:border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}
.sol-main:hover{border-color:rgba(23,201,174,.5);box-shadow:0 0 0 1px rgba(23,201,174,.22),0 22px 44px rgba(3,8,18,.5);transform:translateY(-2px)}
.sol-main figure{margin:0;aspect-ratio:16/9;border-radius:var(--r-md);overflow:hidden;background:linear-gradient(135deg,#0E2A33,#0A1626)}
.sol-main figure img{width:100%;height:100%;object-fit:cover}
.sol-body{padding:0 6px 6px}
.sol-index{
  font-size:15px;font-weight:700;color:rgba(23,201,174,.85);
  -webkit-text-stroke:.4px rgba(23,201,174,.6);
  letter-spacing:.12em;
}
.sol-main h3{margin-top:10px;font-size:20px;font-weight:600;color:#fff}
.sol-main p{margin-top:10px;color:var(--ink-300);font-size:15px}
.sol-points{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.sol-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-300)}
.sol-points li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;
}
.sol-links{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:18px;font-size:14px;color:var(--brand)}
.sol-links a{color:var(--brand);font-weight:600}
.sol-links a:hover{color:#7DF1DE}
.sol-links span{color:var(--ink-500)}
.sol-side{grid-column:span 6;display:grid;grid-template-rows:1fr 1fr;gap:24px}
.sol-mini{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-md);
  padding:24px;display:flex;flex-direction:column;justify-content:center;gap:10px;
  transition:border-color .22s ease, transform .22s ease, box-shadow .22s ease;
}
.sol-mini:hover{border-color:rgba(23,201,174,.5);transform:translateY(-2px);box-shadow:0 18px 36px rgba(3,8,18,.4)}
.sol-mini h3{font-size:19px;font-weight:600;color:#fff}
.sol-mini p{font-size:14px;color:var(--ink-300)}
.sol-mini a{font-size:14px;font-weight:600;color:var(--accent)}
.sol-mini a:hover{color:#FFB183}

/* ============ stats ============ */
.stats-bar{
  margin-top:8px;
  background:var(--glass);
  border-top:1px solid var(--glass-line);
  border-bottom:1px solid var(--glass-line);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-radius:var(--r-lg);
  padding:12px 8px;
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat-item{padding:24px 26px;position:relative}
.stat-item + .stat-item::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:1px;background:var(--glass-line);
}
.stat-item strong{
  display:block;font-size:40px;line-height:1.15;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-item:nth-child(2) strong{color:var(--accent)}
.stat-item span{display:block;margin-top:8px;font-size:14px;color:var(--ink-300)}

/* ============ cms list ============ */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.cms-card{
  display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .22s ease, transform .22s ease, box-shadow .22s ease;
}
.cms-card:hover{border-color:rgba(23,201,174,.45);transform:translateY(-3px);box-shadow:0 22px 40px rgba(3,8,18,.45)}
.cms-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#0E2A33,#0A1626)}
.cms-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease}
.cms-card:hover .cms-thumb img{transform:scale(1.04)}
.cms-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  align-self:flex-start;
  padding:4px 12px;border-radius:999px;
  background:rgba(255,138,61,.10);color:#FFA968;
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.cms-body h3{
  font-size:17px;font-weight:600;line-height:1.55;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-body p{
  font-size:14px;color:var(--ink-300);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-500);
}
.cms-foot .arrow{color:var(--brand);font-weight:600}
.empty-state{
  margin-top:40px;padding:56px 24px;text-align:center;
  border:1px dashed rgba(255,255,255,.18);border-radius:var(--r-lg);
  background:rgba(255,255,255,.03);
}
.empty-state p{color:var(--ink-300);font-size:15px}
.empty-state .btn{margin-top:20px}

/* ============ form area ============ */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.form-copy h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:#fff}
.form-copy p.lead{margin-top:16px;color:var(--ink-300);font-size:16px}
.form-points{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.form-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-300)}
.form-points li b{color:#fff;font-weight:600}
.tick{
  flex:none;width:22px;height:22px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;margin-top:3px;
  background:rgba(23,201,174,.14);border:1px solid rgba(23,201,174,.45);color:var(--brand);font-size:12px;
}
.privacy-note{margin-top:22px;font-size:13px;color:var(--ink-500);line-height:1.7}
.paper-form{
  background:var(--paper);color:var(--paper-ink);
  border-radius:var(--r-lg);padding:28px;
  box-shadow:0 24px 60px rgba(3,8,18,.45);
}
.paper-form h3{font-size:19px;font-weight:700;color:var(--paper-ink)}
.paper-form .hint{margin-top:6px;font-size:13px;color:var(--paper-ink-2)}
.field{margin-top:16px}
.field label{display:block;font-size:13px;font-weight:600;color:#33425C;margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;border-radius:var(--r-sm);border:1px solid var(--paper-line);
  background:#F8FAFD;padding:12px 14px;font-size:15px;color:var(--paper-ink);
  outline:none;transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9AA8BC}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(23,201,174,.18);
}
.field input:disabled,.field select:disabled,.field textarea:disabled{opacity:.5;background:#EEF2F7}
.checkline{display:flex;gap:10px;align-items:flex-start;margin-top:16px;font-size:12.5px;color:var(--paper-ink-2);line-height:1.7}
.checkline input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:none}
.paper-form .btn{width:100%;margin-top:18px}
.form-note{margin-top:12px;font-size:12px;color:#8494AA;text-align:center}

/* modal */
.modal-mask{
  position:fixed;inset:0;z-index:120;
  background:rgba(4,8,16,.72);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;pointer-events:none;transition:opacity .22s ease;
}
.modal-mask.open{opacity:1;pointer-events:auto}
.modal-panel{
  width:100%;max-width:520px;max-height:88vh;overflow:auto;
  background:rgba(16,28,51,.92);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);padding:26px;
  box-shadow:0 30px 70px rgba(0,0,0,.5);
  position:relative;
  transform:translateY(10px);transition:transform .24s ease;
}
.modal-mask.open .modal-panel{transform:translateY(0)}
.modal-panel .paper-form{box-shadow:none;padding:22px}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;
  background:rgba(255,255,255,.08);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:18px;line-height:1;transition:background .2s ease;
}
.modal-close:hover{background:rgba(255,92,108,.35)}

/* ============ faq ============ */
.faq-list{margin-top:36px;display:flex;flex-direction:column;gap:14px;max-width:920px}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .22s ease, background .22s ease;
}
.faq-item:hover{border-color:rgba(23,201,174,.35)}
.faq-item[open]{border-color:rgba(23,201,174,.45);background:rgba(23,201,174,.05)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 54px 20px 22px;position:relative;
  font-size:16px;font-weight:600;color:#fff;line-height:1.6;
}
.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:400;color:var(--brand);
  transition:transform .24s ease;
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-item .faq-body{
  padding:0 22px 20px;font-size:15px;color:var(--ink-300);line-height:1.85;
  border-left:2px solid var(--brand);margin-left:0;
}
.faq-item .faq-body p + p{margin-top:8px}

/* ============ footer ============ */
.site-footer{
  background:#060B14;border-top:1px solid rgba(255,255,255,.08);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
.footer-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}
.footer-desc{margin-top:14px;font-size:14px;color:var(--ink-500);line-height:1.85;max-width:300px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col li + li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--ink-300);transition:color .2s ease}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{font-size:14px;color:var(--ink-300);line-height:1.8}
.footer-contact li span{display:block;font-size:12px;color:var(--ink-500)}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.07);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--ink-500);
}
.footer-bottom a{color:var(--ink-500);transition:color .2s ease}
.footer-bottom a:hover{color:var(--brand)}
.footer-bottom .fb-links{display:flex;gap:20px;flex-wrap:wrap}

/* ============ responsive ============ */
@media (max-width:1280px){
  .hero-grid{gap:36px}
}
@media (max-width:1024px){
  :root{--sp-section:64px}
  .main-nav{gap:20px;margin-left:18px}
  .search-box{width:170px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-card{max-width:560px}
  .float-stat{left:18px;bottom:-20px}
  .solution-grid{grid-template-columns:1fr}
  .sol-main,.sol-side{grid-column:span 12}
  .sol-side{grid-template-rows:auto auto;grid-template-columns:1fr 1fr}
  .cms-grid{grid-template-columns:repeat(2,1fr)}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--sp-section:48px}
  .header-inner{height:60px;gap:12px}
  .main-nav,.search-box{display:none}
  .nav-toggle{display:flex}
  .logo{font-size:16px}
  .header-cta{padding:0 16px;font-size:13px}
  .hero{padding:52px 0 64px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .pain-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:1fr 1fr}
  .stat-item{padding:20px}
  .stat-item:nth-child(3)::before{display:none}
  .stat-item strong{font-size:32px}
  .cms-grid{grid-template-columns:1fr}
  .sol-side{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .modal-panel{padding:18px}
  .paper-form{padding:22px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .hero h1{font-size:30px}
  .hero-trust{gap:8px}
  .trust-pill{font-size:12px;padding:7px 12px}
  .stat-item strong{font-size:28px}
  .float-tag{right:10px;font-size:11px}
  .float-stat{padding:10px 12px;left:12px}
  .float-stat strong{font-size:18px}
  .footer-bottom{font-size:11px}
}

/* roulang page: article */
:root{
  --bg-900:#070D18;
  --bg-800:#0B1424;
  --bg-700:#101C33;
  --ink-100:#EAF2FB;
  --ink-300:#A9BACC;
  --ink-500:#70839B;
  --brand:#17C9AE;
  --brand-deep:#0FA88F;
  --accent:#FF8A3D;
  --danger:#FF5C6C;
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.10);
  --paper:#FFFFFF;
  --paper-ink:#16223A;
  --paper-line:#E6EBF2;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-glass:0 1px 0 rgba(255,255,255,.08) inset, 0 18px 40px rgba(3,8,18,.45);
  --shadow-header:0 6px 20px rgba(10,20,40,.06);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","system-ui",-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-100);
  background:var(--bg-900);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{list-style:none;padding:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-head p{color:var(--ink-300);font-size:15px;margin-top:10px;}
.link-more{color:var(--brand);font-size:15px;font-weight:600;white-space:nowrap;transition:color .2s ease,transform .2s ease;}
.link-more:hover{color:#3FE4CB;transform:translateX(3px);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:#FFFFFF;
  border-bottom:1px solid var(--paper-line);
  box-shadow:var(--shadow-header);
}
.header-inner{display:flex;align-items:center;gap:22px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#0E1A2B;letter-spacing:-.01em;}
.logo .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;margin-left:-4px;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:14px;}
.main-nav a{position:relative;font-size:15px;color:#445066;padding:6px 0;transition:color .2s ease;}
.main-nav a:hover{color:#0E1A2B;}
.main-nav a.active{color:#0E1A2B;font-weight:700;}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--brand);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{display:flex;align-items:center;gap:8px;background:#F1F5F9;border-radius:999px;padding:9px 16px;color:#7A889B;transition:box-shadow .2s ease,background .2s ease;}
.search-box:focus-within{background:#EAF3F1;box-shadow:0 0 0 3px rgba(23,201,174,.18);}
.search-box input{border:0;background:transparent;outline:none;width:150px;font-size:14px;color:#16223A;}
.search-box input::placeholder{color:#94A2B5;}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:12px;color:#16223A;border:1px solid var(--paper-line);}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;transition:transform .18s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#03211C;box-shadow:0 8px 24px rgba(23,201,174,.28);}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(23,201,174,.5),0 10px 30px rgba(23,201,174,.35);}
.btn-ghost{background:transparent;color:var(--ink-100);border:1px solid rgba(255,255,255,.22);}
.btn-ghost:hover{border-color:rgba(23,201,174,.6);color:#9DF5E7;background:rgba(23,201,174,.08);}
.btn-accent{background:transparent;color:var(--accent);border:1px solid rgba(255,138,61,.55);}
.btn-accent:hover{background:rgba(255,138,61,.1);color:#FFB184;}
.btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;}

/* ---------- Breadcrumb ---------- */
.crumbbar{background:var(--bg-800);border-bottom:1px solid rgba(255,255,255,.05);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--ink-500);}
.breadcrumb a{color:var(--ink-300);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.22);}
.breadcrumb .current{color:#FFFFFF;}

/* ---------- Article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(820px 420px at 12% -10%, rgba(23,201,174,.16), transparent 62%),
    radial-gradient(640px 340px at 92% 0%, rgba(255,138,61,.10), transparent 60%),
    var(--bg-800);
  padding:44px 0 52px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;pointer-events:none;opacity:.6;
}
.article-hero .container{position:relative;z-index:2;}
.hero-tagline{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:rgba(23,201,174,.10);border:1px solid rgba(23,201,174,.32);border-radius:999px;padding:6px 14px;margin-bottom:18px;}
.article-hero h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em;max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:20px;font-size:13px;color:var(--ink-500);font-variant-numeric:tabular-nums;}
.article-meta .chip{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:rgba(255,138,61,.12);color:#FFB184;border:1px solid rgba(255,138,61,.3);font-size:12px;font-weight:600;}
.article-meta .dot-sep{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22);}

/* ---------- Article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:36px;justify-content:center;align-items:start;padding:56px 0 0;}
.paper-card{
  background:var(--paper);color:var(--paper-ink);
  border-radius:var(--radius-lg);
  padding:44px 46px 40px;
  box-shadow:0 24px 60px rgba(3,8,18,.42);
  border:1px solid rgba(255,255,255,.5);
}
.lead-note{
  display:flex;gap:12px;align-items:flex-start;
  background:#F4F8FB;border:1px solid #E1EAF2;border-radius:14px;
  padding:14px 18px;margin-bottom:28px;font-size:14px;line-height:1.75;color:#41536B;
}
.lead-note svg{flex:0 0 auto;margin-top:3px;color:var(--brand-deep);}

.article-body{font-size:17px;line-height:1.95;color:#25334A;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:clamp(20px,2.4vw,26px);line-height:1.45;font-weight:700;color:#0F1B2E;
  margin:40px 0 16px;padding-left:15px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:#16223A;margin:30px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:#16223A;}
.article-body p{margin:0 0 18px;}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#0B7F6D;}
.article-body strong{color:#0F1B2E;font-weight:700;}
.article-body img{border-radius:16px;margin:24px auto;max-width:100%;height:auto;box-shadow:0 10px 28px rgba(16,32,56,.12);}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:50%;background:var(--brand);}
.article-body ol{counter-reset:li;padding-left:0;}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:10px;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:6px;width:22px;height:22px;border-radius:50%;
  background:rgba(23,201,174,.14);color:var(--brand-deep);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:#F5F9FB;border-left:3px solid var(--brand);
  border-radius:12px;color:#3C4C63;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--paper-line);padding:12px 10px;text-align:left;}
.article-body th{background:#F4F8FB;color:#16223A;font-weight:600;}
.article-body code{background:#F1F5F9;border-radius:6px;padding:2px 6px;font-size:14px;color:#0E5D51;}
.article-body hr{border:0;border-top:1px solid var(--paper-line);margin:32px 0;}

.empty-state{padding:56px 20px;text-align:center;}
.empty-state h2{font-size:22px;font-weight:700;color:#0F1B2E;margin-bottom:10px;}
.empty-state p{color:#5B6C84;font-size:15px;margin-bottom:22px;}
.empty-state .btn-primary{color:#03211C;}

.article-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:34px;padding-top:24px;border-top:1px solid var(--paper-line);}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-deep);}
.back-link:hover{color:#0B7F6D;text-decoration:underline;text-underline-offset:4px;}
.prev-next{display:flex;gap:10px;flex-wrap:wrap;}
.prev-next a{font-size:14px;color:#41536B;border:1px solid var(--paper-line);border-radius:999px;padding:8px 16px;transition:border-color .2s ease,color .2s ease,background .2s ease;}
.prev-next a:hover{border-color:rgba(23,201,174,.5);color:var(--brand-deep);background:#F4FBF9;}

/* ---------- Sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow-glass);backdrop-filter:blur(8px);}
.side-card h3{font-size:15px;font-weight:700;color:#FFFFFF;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand);}
.toc-list a{display:block;font-size:14px;color:var(--ink-300);padding:7px 0 7px 12px;border-left:2px solid rgba(255,255,255,.1);transition:color .2s ease,border-color .2s ease;}
.toc-list a:hover{color:var(--brand);border-color:var(--brand);}
.hot-list li + li{margin-top:12px;padding-top:12px;border-top:1px dashed rgba(255,255,255,.10);}
.hot-list a{display:block;font-size:14px;line-height:1.65;color:var(--ink-300);transition:color .2s ease;}
.hot-list a:hover{color:var(--brand);}
.hot-list span{display:block;font-size:12px;color:var(--ink-500);margin-top:4px;font-variant-numeric:tabular-nums;}
.side-cta{background:linear-gradient(150deg,rgba(23,201,174,.18),rgba(16,28,51,.9));border:1px solid rgba(23,201,174,.32);border-radius:var(--radius-md);padding:22px;}
.side-cta p{font-size:14px;color:var(--ink-300);margin:8px 0 16px;}

/* ---------- Related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-glass);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(23,201,174,.45);box-shadow:0 0 0 1px rgba(23,201,174,.28),0 20px 44px rgba(3,8,18,.5);}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#12253C,#0B1424);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.05);}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{display:inline-flex;align-items:center;align-self:flex-start;font-size:12px;font-weight:600;color:#FFB184;background:rgba(255,138,61,.10);border:1px solid rgba(255,138,61,.28);border-radius:999px;padding:3px 11px;}
.rel-body h3{font-size:16px;line-height:1.55;font-weight:600;color:#FFFFFF;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body p{font-size:14px;line-height:1.7;color:var(--ink-300);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500);font-variant-numeric:tabular-nums;}
.rel-foot .arrow{color:var(--brand);transition:transform .2s ease;}
.rel-card:hover .rel-foot .arrow{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--radius-md);overflow:hidden;transition:border-color .22s ease,background .22s ease;}
.faq-item:hover{border-color:rgba(23,201,174,.35);}
.faq-item.open{border-color:rgba(23,201,174,.45);background:rgba(23,201,174,.05);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;text-align:left;padding:18px 22px;font-size:16px;font-weight:600;color:#FFFFFF;}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;color:var(--brand);transition:transform .25s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity .25s ease;}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 22px 20px;border-left:2px solid var(--brand);margin-left:22px;padding-left:16px;font-size:15px;line-height:1.85;color:var(--ink-300);}

/* ---------- CTA ---------- */
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:linear-gradient(120deg,rgba(23,201,174,.16),rgba(255,138,61,.10)),var(--bg-700);
  border:1px solid rgba(255,138,61,.32);border-radius:var(--radius-lg);padding:32px 36px;
}
.cta-bar h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;font-weight:700;color:#FFFFFF;}
.cta-bar p{font-size:15px;color:var(--ink-300);margin-top:8px;}

/* ---------- Footer ---------- */
.site-footer{background:#060B14;border-top:1px solid rgba(255,255,255,.08);padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#FFFFFF;}
.footer-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;margin-left:-4px;}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.8;color:var(--ink-300);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:#FFFFFF;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-300);transition:color .2s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{font-size:14px;color:var(--ink-100);}
.footer-contact span{display:block;font-size:12px;color:var(--ink-500);margin-top:2px;}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:48px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.07);font-size:12px;color:var(--ink-500);}
.fb-links{display:flex;align-items:center;gap:16px;}
.fb-links a{color:var(--ink-300);}
.fb-links a:hover{color:var(--brand);}

/* ---------- Modal ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(4,8,16,.72);backdrop-filter:blur(6px);
}
.modal-mask.open{display:flex;}
.modal-card{
  position:relative;width:100%;max-width:520px;max-height:90vh;overflow:auto;
  background:linear-gradient(160deg,rgba(23,201,174,.10),rgba(11,20,36,.96)),var(--bg-800);
  border:1px solid var(--glass-line);border-radius:var(--radius-lg);padding:30px 30px 26px;
  box-shadow:0 30px 80px rgba(0,0,0,.6);
}
.modal-card h3{font-size:20px;font-weight:700;color:#FFFFFF;margin-bottom:8px;}
.modal-card .modal-sub{font-size:14px;color:var(--ink-300);margin-bottom:20px;}
.modal-close{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--ink-300);border:1px solid var(--glass-line);}
.modal-close:hover{color:#FFFFFF;border-color:rgba(23,201,174,.5);}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;color:var(--ink-300);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.05);border:1px solid var(--glass-line);
  border-radius:var(--radius-sm);padding:11px 14px;font-size:15px;color:#FFFFFF;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:#6C7E96;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,201,174,.22);background:rgba(255,255,255,.08);
}
.field textarea{min-height:88px;resize:vertical;}
.field select option{background:#0B1424;color:#FFFFFF;}
.form-note{display:flex;gap:8px;align-items:flex-start;font-size:12px;color:var(--ink-500);margin-top:12px;line-height:1.7;}
.form-note input{width:15px;height:15px;margin-top:3px;accent-color:var(--brand);}
.modal-submit{width:100%;margin-top:6px;}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;}
  .sidebar > *{flex:1 1 260px;}
}
@media (max-width:1024px){
  .main-nav{gap:20px;}
  .search-box input{width:110px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1/-1;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .header-inner{height:60px;gap:12px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;margin:0;
    flex-direction:column;align-items:flex-start;gap:4px;
    background:rgba(11,20,36,.97);backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(23,201,174,.25);
    padding:14px 24px 20px;display:none;
  }
  .site-header.nav-open .main-nav{display:flex;}
  .main-nav a{color:var(--ink-100);width:100%;padding:11px 0;font-size:16px;border-bottom:1px solid rgba(255,255,255,.06);}
  .main-nav a.active{color:var(--brand);}
  .main-nav a.active::after{display:none;}
  .header-actions .search-box{display:none;}
  .header-cta{height:40px;padding:0 16px;font-size:14px;}
  .paper-card{padding:28px 22px 26px;border-radius:16px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-layout{padding-top:36px;gap:26px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .cta-bar{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-col ul{gap:8px;}
  .site-footer{margin-top:64px;padding-top:48px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo span{font-size:15px;}
  .article-hero{padding:32px 0 38px;}
  .article-meta{gap:10px;font-size:12px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .header-cta{width:auto;}
  .prev-next{width:100%;}
  .prev-next a{flex:1 1 auto;text-align:center;}
  .sidebar{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --bg-900:#070D18;
  --bg-800:#0B1424;
  --bg-700:#101C33;
  --ink-100:#EAF2FB;
  --ink-300:#A9BACC;
  --ink-500:#70839B;
  --brand:#17C9AE;
  --brand-deep:#0FA88F;
  --accent:#FF8A3D;
  --danger:#FF5C6C;
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.10);
  --paper:#FFFFFF;
  --paper-ink:#16223A;
  --paper-line:#E6EBF2;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-glass:0 1px 0 rgba(255,255,255,.08) inset, 0 18px 40px rgba(3,8,18,.45);
  --shadow-header:0 6px 20px rgba(10,20,40,.06);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  background:var(--bg-900);
  color:var(--ink-100);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit}
::selection{background:rgba(23,201,174,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#FFFFFF;
  border-bottom:1px solid var(--paper-line);
  box-shadow:var(--shadow-header);
}
.header-inner{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:9px;font-size:17.5px;font-weight:700;letter-spacing:-.01em;color:#0E1A2B;white-space:nowrap}
.logo svg{flex:0 0 auto}
.logo .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);align-self:flex-start;margin-top:13px;display:inline-block}
.logo:hover{color:var(--brand-deep)}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:6px;margin-right:auto}
.main-nav a{
  position:relative;font-size:15px;color:#44506A;padding:6px 2px;
  transition:color .2s ease;
}
.main-nav a:hover{color:#0E1A2B}
.main-nav a.active{color:#0E1A2B;font-weight:700}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:#F1F5F9;border:1px solid transparent;border-radius:999px;color:#64748B;
  transition:border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,201,174,.16);color:var(--brand-deep)}
.search-box input{border:0;outline:none;background:none;width:132px;font-size:14px;color:#0E1A2B}
.search-box input::placeholder{color:#8A99AD}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border-radius:12px;color:#0E1A2B;border:1px solid var(--paper-line);
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:#F1F5F9;border-color:#D5DEE9}
.nav-mobile-cta{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04211C;
  box-shadow:0 8px 24px rgba(23,201,174,.26);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#25DCC0,#12B79C);
  box-shadow:0 0 0 1px rgba(23,201,174,.5), 0 10px 30px rgba(23,201,174,.35);
}
.btn-ghost{
  border:1px solid rgba(255,255,255,.24);
  color:var(--ink-100);
  background:rgba(255,255,255,.03);
}
.btn-ghost:hover{border-color:rgba(23,201,174,.6);color:#fff;background:rgba(23,201,174,.10)}
.btn-accent{
  border:1px solid rgba(255,138,61,.65);
  color:#FFC49A;
  background:rgba(255,138,61,.10);
}
.btn-accent:hover{
  background:rgba(255,138,61,.18);
  color:#fff;
  box-shadow:0 0 0 1px rgba(255,138,61,.45), 0 12px 28px rgba(255,138,61,.22);
}
.header-cta{height:40px;padding:0 20px;font-size:14px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:48px 0 76px;
  background:var(--bg-800) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,13,24,.66),rgba(7,13,24,.94)),
    radial-gradient(760px 380px at 12% 8%,rgba(23,201,174,.20),transparent 62%),
    radial-gradient(620px 320px at 88% 92%,rgba(255,138,61,.12),transparent 64%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 90%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 90%);
}
.page-hero > .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:26px}
.breadcrumb a{color:var(--ink-300);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.26)}
.breadcrumb .current{color:#fff}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:#8DF0DF;background:rgba(23,201,174,.12);
  border:1px solid rgba(23,201,174,.32);
  margin-bottom:20px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(23,201,174,.9)}
.page-hero h1{
  font-size:clamp(28px,3.7vw,42px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:#fff;
}
.page-hero h1 .hl{
  background:linear-gradient(100deg,var(--brand),#7BF2DF 55%,#CFFBF3);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{margin-top:18px;font-size:17.5px;line-height:1.85;color:var(--ink-300);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tags li{
  font-size:13px;color:var(--ink-300);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
}
.hero-figure{position:relative}
.hero-figure .frame{
  position:relative;border-radius:var(--radius-md);overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-glass);
  background:
    linear-gradient(135deg,rgba(23,201,174,.16),rgba(11,20,36,.9)),
    repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 1px,transparent 1px 14px);
  aspect-ratio:16/10;
}
.hero-figure .frame img{width:100%;height:100%;object-fit:cover}
.float-tag{
  position:absolute;right:-6px;top:-12px;
  padding:8px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  color:#2A1204;background:linear-gradient(135deg,#FFA463,var(--accent));
  box-shadow:0 10px 24px rgba(255,138,61,.32);
}
.float-card{
  position:absolute;left:-8px;bottom:-18px;
  padding:14px 18px;border-radius:14px;
  background:rgba(9,17,30,.86);
  border:1px solid rgba(23,201,174,.35);
  box-shadow:var(--shadow-glass);
  backdrop-filter:blur(10px);
}
.float-card strong{display:block;font-size:20px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.float-card span{font-size:12.5px;color:var(--ink-300)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section--alt{background:var(--bg-800);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--ink-300);line-height:1.85}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--brand);margin-bottom:12px;text-transform:uppercase;
}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:40px;display:grid;gap:20px}
.timeline::before{
  content:"";position:absolute;left:13px;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(23,201,174,.05));
}
.tl-item{position:relative}
.tl-node{
  position:absolute;left:-40px;top:16px;
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--brand);background:var(--bg-900);
  border:2px solid var(--brand);
  box-shadow:0 0 0 4px rgba(23,201,174,.10);
}
.tl-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--radius-md);
  padding:22px 26px;
  box-shadow:var(--shadow-glass);
  transition:border-color .22s ease, transform .22s ease, background .22s ease;
}
.tl-card:hover{border-color:rgba(23,201,174,.45);transform:translateY(-2px);background:rgba(255,255,255,.075)}
.tl-card h3{font-size:19px;font-weight:600;line-height:1.5}
.tl-card p{margin-top:8px;font-size:15px;color:var(--ink-300);line-height:1.85}
.tl-list{margin-top:14px}
.tl-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-300);line-height:1.9}
.tl-list li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(23,201,174,.7);
}

/* ---------- glass note cards ---------- */
.note-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.note-card{
  position:relative;
  padding:24px 26px 24px 28px;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-glass);
  transition:border-color .22s ease, transform .22s ease;
}
.note-card::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(23,201,174,.25));
}
.note-card:hover{border-color:rgba(23,201,174,.45);transform:translateY(-2px)}
.note-card h3{font-size:17px;font-weight:600;line-height:1.55}
.note-card p{margin-top:8px;font-size:14.5px;color:var(--ink-300);line-height:1.85}

/* ---------- message compare ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:start}
.msg-list{display:grid;gap:14px}
.msg-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 20px;border-radius:14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-line);
  transition:border-color .22s ease, background .22s ease, transform .22s ease;
}
.msg-item:hover{border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.06);transform:translateX(2px)}
.msg-mark{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--accent);background:rgba(255,138,61,.12);border:1px solid rgba(255,138,61,.30);
}
.msg-body h3{font-size:15.5px;font-weight:600;color:#fff;line-height:1.6}
.msg-body p{margin-top:6px;font-size:14px;color:var(--ink-300);line-height:1.8}
.figure-panel{
  position:relative;border-radius:var(--radius-md);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--shadow-glass);
  aspect-ratio:4/3;
  background:linear-gradient(140deg,rgba(23,201,174,.18),rgba(11,20,36,.94));
}
.figure-panel img{width:100%;height:100%;object-fit:cover}
.figure-panel figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
  font-size:13px;color:#DCE7F3;
  background:linear-gradient(180deg,rgba(7,13,24,0),rgba(7,13,24,.92));
}
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.09);border-bottom:1px solid rgba(255,255,255,.09);
}
.stat-strip div strong{
  display:block;font-size:30px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.15;
}
.stat-strip div span{font-size:13px;color:var(--ink-500)}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--radius-md);overflow:hidden;
  transition:border-color .22s ease, background .22s ease;
}
.faq-item:hover{border-color:rgba(255,255,255,.2)}
.faq-item.open{border-color:rgba(23,201,174,.45);background:rgba(23,201,174,.06)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:19px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink-100);line-height:1.6;
}
.faq-item.open .faq-q{color:#fff;box-shadow:inset 2px 0 0 var(--brand)}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px;margin-left:auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .26s ease;
}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px}
.faq-item.open .faq-icon::after{transform:rotate(90deg)}
.faq-a{display:none;padding:0 22px 20px 22px;font-size:15px;color:var(--ink-300);line-height:1.9;animation:fadeIn .24s ease}
.faq-item.open .faq-a{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- cta band ---------- */
.cta-band{
  border:1px solid rgba(255,138,61,.45);
  border-radius:var(--radius-lg);
  background:linear-gradient(100deg,rgba(255,138,61,.14),rgba(255,138,61,.02) 65%);
  padding:38px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 18px 44px rgba(3,8,18,.4);
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);line-height:1.35;font-weight:700}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-300);max-width:620px}
.cta-band .btn{flex:0 0 auto}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:22px}
.modal.open{display:flex}
.modal-overlay{position:absolute;inset:0;background:rgba(4,8,16,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal-card{
  position:relative;width:min(520px,100%);max-height:88vh;overflow:auto;
  padding:28px;border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(16,28,51,.98),rgba(9,17,30,.98));
  border:1px solid rgba(23,201,174,.28);
  box-shadow:0 30px 70px rgba(0,0,0,.55);
  animation:modalIn .26s ease;
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.modal-card h3{font-size:21px;font-weight:700}
.modal-card .modal-desc{margin-top:8px;font-size:14px;color:var(--ink-300)}
.modal-close{
  position:absolute;right:14px;top:14px;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;line-height:1;color:var(--ink-300);
  border:1px solid var(--glass-line);transition:background .2s ease,color .2s ease;
}
.modal-close:hover{background:rgba(255,255,255,.08);color:#fff}
.form-paper{
  margin-top:18px;background:var(--paper);border-radius:var(--radius-md);
  padding:20px;color:var(--paper-ink);
}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:#3B4A63;margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;font-size:15px;color:var(--paper-ink);
  background:#fff;border:1px solid var(--paper-line);border-radius:var(--radius-sm);
  outline:none;transition:border-color .2s ease, box-shadow .2s ease;
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9AA8BA}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,201,174,.20);
}
.form-paper .btn{width:100%}
.form-note{margin-top:10px;font-size:12px;color:#7A899C;line-height:1.7}
.form-note a{color:var(--brand-deep);text-decoration:underline}
.form-feedback{margin-top:10px;font-size:13px;font-weight:600;color:var(--brand-deep);display:none}
.form-feedback.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:#060B14;border-top:1px solid rgba(255,255,255,.08);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px;padding:58px 0 38px}
.footer-brand{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;color:#fff}
.footer-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);align-self:flex-start;margin-top:12px}
.footer-desc{margin-top:14px;font-size:14px;color:var(--ink-300);line-height:1.85;max-width:310px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col li a{display:inline-block;padding:5px 0;font-size:14px;color:var(--ink-300);transition:color .2s ease}
.footer-col li a:hover{color:var(--brand)}
.footer-contact li{font-size:14px;color:var(--ink-100);padding:5px 0}
.footer-contact li span{display:block;font-size:12.5px;color:var(--ink-500)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.08);
  font-size:12px;color:var(--ink-500);
}
.fb-links{display:flex;align-items:center;gap:16px}
.fb-links a{color:var(--ink-500);transition:color .2s ease}
.fb-links a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .header-inner{gap:18px}
  .main-nav{gap:20px}
  .search-box input{width:110px}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .split{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:1 / -1}
  .header-inner{gap:14px}
  .main-nav{gap:16px}
  .main-nav a{font-size:14px}
  .search-box{display:none}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .header-inner{height:60px;gap:10px}
  .logo{font-size:16px}
  .logo .dot{margin-top:11px}
  .nav-toggle{display:inline-flex;order:3}
  .header-cta{height:36px;padding:0 14px;font-size:13px;order:2}
  .header-actions{margin-left:auto;gap:8px}
  .main-nav{
    position:fixed;top:60px;left:0;right:0;z-index:90;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:12px;
    background:rgba(11,20,36,.97);
    border-bottom:1px solid var(--glass-line);
    box-shadow:0 24px 50px rgba(0,0,0,.5);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  }
  .main-nav.open{display:flex}
  .main-nav a{color:#D6E3F0;font-size:15.5px;padding:13px 14px;border-radius:12px}
  .main-nav a:hover{background:rgba(255,255,255,.06);color:#fff}
  .main-nav a.active{background:rgba(23,201,174,.14);color:#fff}
  .main-nav a.active::after{display:none}
  .nav-mobile-cta{
    display:flex;align-items:center;justify-content:center;margin-top:6px;
    height:46px;border-radius:999px;font-size:15px;font-weight:600;
    color:#04211C;background:linear-gradient(135deg,var(--brand),var(--brand-deep));
    box-shadow:0 8px 24px rgba(23,201,174,.26);
  }
  .page-hero{padding:30px 0 52px}
  .lede{font-size:16px}
  .hero-actions .btn{flex:1 1 180px}
  .float-card{left:0;bottom:-14px;padding:12px 14px}
  .float-tag{right:0;top:-10px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .note-grid{grid-template-columns:1fr}
  .timeline{padding-left:34px;gap:16px}
  .timeline::before{left:11px}
  .tl-node{left:-34px;width:24px;height:24px;font-size:11px;top:18px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:20px}
  .cta-band .btn{width:100%}
  .stat-strip{grid-template-columns:1fr 1fr;gap:14px}
  .footer-grid{grid-template-columns:1fr 1fr;padding:44px 0 28px}
  .footer-col:last-child{grid-column:auto}
  .footer-bottom{font-size:11.5px}
  .form-paper{padding:16px}
}
@media (max-width:480px){
  .container{padding:0 14px}
  .logo span{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .page-hero h1{font-size:26px}
  .hero-tags li{font-size:12px;padding:6px 11px}
  .note-card{padding:20px 18px 20px 22px}
  .tl-card{padding:18px 18px}
  .footer-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr}
  .faq-q{font-size:15px;padding:16px 16px}
  .faq-a{padding:0 16px 16px}
  .cta-band{padding:22px 18px}
  .modal-card{padding:22px}
}

/* roulang page: category2 */
:root{
  --bg-900:#070D18;
  --bg-800:#0B1424;
  --bg-700:#101C33;
  --ink-100:#EAF2FB;
  --ink-300:#A9BACC;
  --ink-500:#70839B;
  --brand:#17C9AE;
  --brand-deep:#0FA88F;
  --accent:#FF8A3D;
  --danger:#FF5C6C;
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.10);
  --paper:#FFFFFF;
  --paper-ink:#16223A;
  --paper-line:#E6EBF2;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-glass:0 1px 0 rgba(255,255,255,.08) inset, 0 18px 40px rgba(3,8,18,.45);
  --shadow-header:0 6px 20px rgba(10,20,40,.06);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-100);
  background:var(--bg-900);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;cursor:pointer}
input,select,textarea{font:inherit}
::selection{background:rgba(23,201,174,.35);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:#fff;
  border-bottom:1px solid var(--paper-line);
  box-shadow:var(--shadow-header);
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;color:#0E1A2B;letter-spacing:-.01em;white-space:nowrap}
.logo .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;margin-left:2px}
.main-nav{display:flex;align-items:center;gap:26px;margin-right:auto}
.main-nav a{
  position:relative;font-size:15px;color:#445566;padding:6px 0;transition:color .2s ease;
}
.main-nav a:hover{color:var(--brand-deep)}
.main-nav a.active{color:#0E1A2B;font-weight:700}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:#F1F5F9;border:1px solid transparent;border-radius:999px;
  padding:0 16px;height:42px;width:220px;
  color:#7A8798;transition:border-color .2s,box-shadow .2s,background .2s;
}
.search-box:focus-within{border-color:rgba(23,201,174,.6);background:#fff;box-shadow:0 0 0 3px rgba(23,201,174,.16)}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:#16223A;
}
.search-box input::placeholder{color:#8B97A6}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--paper-line);
  background:#F7FAFC;color:#16223A;transition:background .2s,border-color .2s;
}
.nav-toggle:hover{background:#EDF3F8;border-color:#D7E1EC}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:filter .2s,transform .15s,box-shadow .25s,background .2s,color .2s,border-color .2s;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04211C;
  box-shadow:0 8px 24px rgba(23,201,174,.28);
}
.btn-primary:hover{
  filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(23,201,174,.5),0 10px 30px rgba(23,201,174,.35);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.22);color:var(--ink-100);
}
.btn-ghost:hover{background:rgba(23,201,174,.1);border-color:rgba(23,201,174,.6);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-amber{
  background:transparent;border:1px solid rgba(255,138,61,.55);color:#FFB27A;
}
.btn-amber:hover{background:rgba(255,138,61,.12);border-color:var(--accent);color:#FFC79E}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}
.header-cta{height:42px;min-height:42px;padding:0 20px;font-size:14px}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;left:0;right:0;top:60px;z-index:110;
  display:none;flex-direction:column;gap:4px;
  padding:16px 20px 22px;
  background:rgba(11,20,36,.96);
  border-bottom:1px solid var(--glass-line);
  box-shadow:0 24px 50px rgba(3,8,18,.6);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-drawer.open{display:flex}
.nav-drawer a{
  padding:12px 10px;border-radius:12px;font-size:15px;color:var(--ink-300);
  transition:background .2s,color .2s;
}
.nav-drawer a:hover,.nav-drawer a.active{background:rgba(23,201,174,.12);color:#fff}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--alt{background:var(--bg-800);border-top:1px solid var(--glass-line);border-bottom:1px solid var(--glass-line)}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.02em;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--accent)}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--ink-100)}
.section-sub{margin-top:14px;font-size:16px;color:var(--ink-300);line-height:1.85}
.section-lead{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:13px;color:var(--ink-500);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--ink-500);transition:color .2s}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(255,255,255,.2)}
.crumbs .now{color:#fff}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 64px;
  background:var(--bg-800);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(180deg,rgba(7,13,24,.58),rgba(7,13,24,.94)),
    url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  opacity:.9;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(520px 320px at 12% 18%,rgba(23,201,174,.22),transparent 70%),
    radial-gradient(460px 300px at 82% 6%,rgba(255,138,61,.14),transparent 72%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.hero-body{max-width:760px;margin-top:26px}
.hero-title{
  font-size:clamp(30px,4vw,44px);line-height:1.26;letter-spacing:-.01em;
  color:#fff;margin-bottom:18px;
}
.hero-title .hl{
  background:linear-gradient(120deg,var(--brand),#7DF0DF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-desc{font-size:17px;line-height:1.85;color:var(--ink-300);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
  font-size:13px;color:var(--ink-300);
}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}

/* ---------- 双栏图文 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start}
.glass-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-glass);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  padding:30px;
}
.glass-card h3{font-size:20px;color:#fff;margin-bottom:8px}
.glass-card .card-note{font-size:14px;color:var(--ink-300);margin-bottom:22px}
.check-list{display:flex;flex-direction:column;gap:16px}
.check-list li{
  display:flex;gap:14px;padding:14px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list .idx{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(23,201,174,.5);color:var(--brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.check-list strong{display:block;font-size:15px;color:var(--ink-100);font-weight:600;margin-bottom:2px}
.check-list span{font-size:14px;color:var(--ink-300);line-height:1.75}

.figure-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--shadow-glass);
}
.figure-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.figure-card .tag-float{
  position:absolute;left:16px;bottom:16px;
  padding:8px 14px;border-radius:999px;
  background:rgba(255,138,61,.92);color:#2A1204;
  font-size:13px;font-weight:700;
  box-shadow:0 10px 24px rgba(255,138,61,.28);
}
.figure-note{
  margin-top:16px;font-size:13px;color:var(--ink-500);line-height:1.7;
}

/* ---------- 风险对照 ---------- */
.risk-list{display:flex;flex-direction:column;gap:16px}
.risk-item{
  display:grid;grid-template-columns:200px 1fr 150px;gap:24px;align-items:center;
  padding:22px 26px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--glass-line);
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.risk-item:hover{
  border-color:rgba(23,201,174,.45);
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(3,8,18,.5);
}
.risk-item h3{font-size:16px;color:#fff;font-weight:600}
.risk-item p{font-size:14px;color:var(--ink-300);line-height:1.75}
.risk-item p b{color:var(--ink-100);font-weight:600}
.badge{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:12px;font-weight:600;
  white-space:nowrap;
}
.badge-amber{background:rgba(255,138,61,.13);color:#FFB27A;border:1px solid rgba(255,138,61,.3)}
.badge-teal{background:rgba(23,201,174,.13);color:#6FE6D6;border:1px solid rgba(23,201,174,.32)}
.badge-danger{background:rgba(255,92,108,.12);color:#FF9AA4;border:1px solid rgba(255,92,108,.3)}

/* ---------- 加固卡片（非对称） ---------- */
.harden-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.harden-card{
  position:relative;padding:28px 26px 26px;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-glass);
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.harden-card:hover{
  border-color:rgba(23,201,174,.45);
  transform:translateY(-3px);
  box-shadow:0 22px 44px rgba(3,8,18,.55);
}
.harden-card.span-3{grid-column:span 3}
.harden-card.span-2{grid-column:span 2}
.harden-card.span-4{grid-column:span 4}
.harden-card .no{
  display:block;font-size:30px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(23,201,174,.62);
  margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.harden-card h3{font-size:18px;color:#fff;margin-bottom:8px}
.harden-card p{font-size:14px;color:var(--ink-300);line-height:1.78}
.harden-card.is-accent{
  background:linear-gradient(150deg,rgba(255,138,61,.13),rgba(255,255,255,.04));
  border-color:rgba(255,138,61,.36);
}
.harden-card.is-accent .no{-webkit-text-stroke:1px rgba(255,138,61,.7)}
.harden-card .mini{
  display:inline-block;margin-top:14px;font-size:13px;color:var(--brand);font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:14px;margin-bottom:14px;overflow:hidden;
  transition:border-color .25s,box-shadow .25s;
}
.faq-item:hover{border-color:rgba(23,201,174,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 24px;font-size:16px;font-weight:600;color:var(--ink-100);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:16px;height:16px;flex:none;transition:transform .28s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open]{box-shadow:inset 2px 0 0 var(--brand);border-color:rgba(23,201,174,.42)}
.faq-item[open] .faq-icon{transform:rotate(90deg)}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--ink-300);line-height:1.9}
.faq-body strong{color:var(--ink-100);font-weight:600}

/* ---------- CTA 条 ---------- */
.cta-bar{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:38px 40px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(255,138,61,.14),rgba(23,201,174,.09) 60%,rgba(255,255,255,.03));
  border:1px solid rgba(255,138,61,.38);
  box-shadow:var(--shadow-glass);
}
.cta-bar::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,138,61,.28),transparent 68%);
  pointer-events:none;
}
.cta-bar h2{font-size:clamp(21px,2.4vw,27px);color:#fff;margin-bottom:10px}
.cta-bar p{font-size:15px;color:var(--ink-300);max-width:560px}
.cta-bar .cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none;position:relative;z-index:2}

/* ---------- 弹层表单 ---------- */
.modal{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;padding:20px}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(4,8,16,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal-card{
  position:relative;z-index:2;width:100%;max-width:520px;max-height:90vh;overflow:auto;
  padding:32px;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,var(--bg-700),var(--bg-800));
  border:1px solid var(--glass-line);
  box-shadow:0 30px 70px rgba(3,8,18,.7);
  animation:pop .22s ease;
}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-card h3{font-size:22px;color:#fff;margin-bottom:8px}
.modal-card .modal-sub{font-size:14px;color:var(--ink-300);margin-bottom:22px}
.modal-close{
  position:absolute;right:14px;top:14px;
  width:34px;height:34px;border-radius:50%;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.05);
  color:var(--ink-300);display:flex;align-items:center;justify-content:center;
  transition:background .2s,color .2s,border-color .2s;
}
.modal-close:hover{background:rgba(255,92,108,.16);color:#fff;border-color:rgba(255,92,108,.5)}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;color:var(--ink-300);margin-bottom:7px}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-line);
  color:var(--ink-100);outline:none;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--ink-500)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--brand);background:rgba(255,255,255,.09);
  box-shadow:0 0 0 3px rgba(23,201,174,.18);
}
.form-field textarea{min-height:96px;resize:vertical}
.form-field select option{background:#0B1424;color:#EAF2FB}
.form-check{display:flex;align-items:flex-start;gap:9px;font-size:12px;color:var(--ink-500);margin-top:14px;line-height:1.6}
.form-check input{margin-top:3px;accent-color:var(--brand)}
.form-submit{width:100%;margin-top:18px}

/* ---------- 页脚 ---------- */
.site-footer{background:#060B14;border-top:1px solid rgba(255,255,255,.08);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}
.footer-desc{font-size:14px;color:var(--ink-500);line-height:1.85;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--ink-300);transition:color .2s}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{font-size:14px;color:var(--ink-300);display:flex;flex-direction:column;gap:2px}
.footer-contact li span{font-size:12px;color:var(--ink-500)}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--ink-500);
}
.fb-links{display:flex;align-items:center;gap:16px}
.fb-links a{color:var(--ink-500);transition:color .2s}
.fb-links a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .search-box{width:180px}
  .main-nav{gap:20px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .split{grid-template-columns:1fr;gap:28px}
  .risk-item{grid-template-columns:1fr;gap:10px}
  .risk-item .badge{justify-self:start}
  .harden-grid{grid-template-columns:repeat(2,1fr)}
  .harden-card.span-3,.harden-card.span-2,.harden-card.span-4{grid-column:span 1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 28px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .header-inner{gap:16px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .header-inner{height:60px}
  .logo{font-size:15px}
  .logo svg{width:22px;height:22px}
  .header-cta{display:none}
  .page-hero{padding:32px 0 48px}
  .hero-body{margin-top:20px}
  .hero-desc{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .section{padding:48px 0}
  .section-head{margin-bottom:30px}
  .glass-card{padding:22px}
  .harden-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .modal-card{padding:24px}
  .cta-bar{padding:26px 20px}
  .cta-bar .cta-actions{width:100%}
  .cta-bar .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:479px){
  .hero-title{font-size:26px}
  .section-title{font-size:22px}
  .check-list li{gap:12px}
  .risk-item{padding:18px 18px}
  .harden-card{padding:22px 20px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
}

/* roulang page: category3 */
:root{
  --bg-900:#070D18;
  --bg-800:#0B1424;
  --bg-700:#101C33;
  --ink-100:#EAF2FB;
  --ink-300:#A9BACC;
  --ink-500:#70839B;
  --brand:#17C9AE;
  --brand-deep:#0FA88F;
  --accent:#FF8A3D;
  --danger:#FF5C6C;
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.10);
  --paper:#FFFFFF;
  --paper-ink:#16223A;
  --paper-line:#E6EBF2;
  --head-ink:#0E1A2B;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.08) inset, 0 18px 40px rgba(3,8,18,.45);
  --shadow-head:0 6px 20px rgba(10,20,40,.06);
  --ease:cubic-bezier(.32,.72,.32,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-100);
  background:var(--bg-900);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--paper);
  border-bottom:1px solid var(--paper-line);
  box-shadow:var(--shadow-head);
}
.header-inner{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;color:var(--head-ink);letter-spacing:-.01em;flex-shrink:0}
.logo svg{flex-shrink:0}
.logo .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;margin-left:-2px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;
  font-size:15px;color:#44515f;font-weight:500;transition:color .2s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:20px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--head-ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--head-ink);font-weight:700}
.main-nav a.active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:#F1F5F9;border:1px solid transparent;border-radius:999px;
  color:#8194a6;transition:.22s var(--ease);width:210px;
}
.search-box:focus-within{background:#fff;border-color:rgba(23,201,174,.55);box-shadow:0 0 0 3px rgba(23,201,174,.14);width:236px}
.search-box input{border:0;background:none;outline:none;font-size:14px;width:100%;color:var(--head-ink)}
.search-box input::placeholder{color:#8194a6}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .24s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04231f;box-shadow:0 8px 22px rgba(23,201,174,.26);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(23,201,174,.5),0 10px 30px rgba(23,201,174,.35)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--glass-line);background:rgba(255,255,255,.04);color:var(--ink-100)}
.btn-ghost:hover{border-color:rgba(23,201,174,.55);background:rgba(23,201,174,.09);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-accent{border:1px solid rgba(255,138,61,.62);color:#FFB683;background:rgba(255,138,61,.09)}
.btn-accent:hover{background:rgba(255,138,61,.18);color:#fff}
.btn-accent:active{transform:translateY(1px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;box-shadow:none;filter:none;transform:none}
.header-cta{min-height:40px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--paper-line);
  color:var(--head-ink);background:#fff;
}
.nav-toggle:hover{background:#F1F5F9}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--bg-800);border-bottom:1px solid var(--glass-line)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(7,13,24,.62),rgba(7,13,24,.94)),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.85;
}
.page-hero::before{
  content:"";position:absolute;width:620px;height:620px;left:-160px;top:-260px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,201,174,.22),transparent 68%);pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;bottom:-280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,138,61,.16),transparent 70%);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding:52px 0 60px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-300)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{color:rgba(255,255,255,.24)}
.breadcrumb .current{color:#fff}
.cat-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,138,61,.12);border:1px solid rgba(255,138,61,.32);
  color:#FFB683;font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:18px;
}
.cat-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.page-hero h1{
  font-size:clamp(30px,3.9vw,44px);line-height:1.28;font-weight:700;letter-spacing:-.01em;
  color:#fff;margin-bottom:18px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand),#6FE9D6 60%,var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;line-height:1.85;color:var(--ink-300);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-media{position:relative}
.hero-media .shot{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-line);
  background:linear-gradient(140deg,rgba(23,201,174,.16),rgba(11,20,36,.9));
  box-shadow:var(--shadow-card);
}
.hero-media .shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-media .float-tag{
  position:absolute;top:-14px;right:-8px;
  padding:8px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:#3A1B00;background:linear-gradient(135deg,#FFA76B,var(--accent));
  box-shadow:0 10px 24px rgba(255,138,61,.35);
}
.hero-media .float-card{
  position:absolute;left:-14px;bottom:-18px;
  display:flex;align-items:center;gap:12px;
  padding:12px 18px;border-radius:14px;
  background:rgba(11,20,36,.86);backdrop-filter:blur(10px);
  border:1px solid var(--glass-line);box-shadow:var(--shadow-card);
}
.hero-media .float-card b{font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.hero-media .float-card span{font-size:12.5px;color:var(--ink-300);line-height:1.5}

/* ---------- sections ---------- */
.section{padding:76px 0}
.section.tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:38px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(23px,2.9vw,32px);line-height:1.34;font-weight:700;color:#fff;letter-spacing:-.01em;
}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--ink-300);line-height:1.85}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- help cards ---------- */
.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.help-card{
  position:relative;padding:26px 26px 26px 28px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
  transition:transform .26s var(--ease),border-color .26s var(--ease),background .26s var(--ease);
  overflow:hidden;
}
.help-card::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(23,201,174,.1));
}
.help-card:hover{transform:translateY(-3px);border-color:rgba(23,201,174,.45);background:rgba(255,255,255,.085)}
.help-card .hc-index{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--ink-500);font-variant-numeric:tabular-nums}
.help-card h3{margin:10px 0 8px;font-size:19px;line-height:1.5;font-weight:600;color:#fff}
.help-card p{font-size:14.5px;color:var(--ink-300);line-height:1.8}
.help-card .hc-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand)}
.help-card .hc-link:hover{gap:10px}
.help-card.is-accent{
  background:linear-gradient(150deg,rgba(255,138,61,.16),rgba(16,28,51,.9));
  border-color:rgba(255,138,61,.4);
}
.help-card.is-accent::before{background:linear-gradient(180deg,var(--accent),rgba(255,138,61,.1))}
.help-card.is-accent .hc-index{color:rgba(255,182,131,.85)}
.help-card.is-accent .hc-link{color:#FFB683}
.help-card.is-accent:hover{border-color:rgba(255,138,61,.72);background:linear-gradient(150deg,rgba(255,138,61,.22),rgba(16,28,51,.92))}

/* ---------- prepare strip ---------- */
.prepare-strip{
  border-radius:var(--r-lg);border:1px solid var(--glass-line);
  background:linear-gradient(140deg,rgba(23,201,174,.09),rgba(11,20,36,.72));
  padding:32px;box-shadow:var(--shadow-card);
}
.prepare-strip h2{font-size:22px;font-weight:700;color:#fff;margin-bottom:8px}
.prepare-strip > p{font-size:14.5px;color:var(--ink-300);margin-bottom:24px;max-width:640px}
.prepare-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.prepare-item{
  padding:20px;border-radius:var(--r-sm);background:rgba(255,255,255,.04);
  border:1px solid var(--glass-line);transition:.24s var(--ease);
}
.prepare-item:hover{border-color:rgba(23,201,174,.42);background:rgba(23,201,174,.07)}
.prepare-item b{display:block;font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--brand);margin-bottom:8px}
.prepare-item h3{font-size:16px;font-weight:600;color:#fff;margin-bottom:6px}
.prepare-item p{font-size:13.5px;color:var(--ink-300);line-height:1.78}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  border:1px solid var(--glass-line);border-radius:var(--r-sm);
  background:var(--glass);overflow:hidden;transition:.24s var(--ease);
}
.faq-item:hover{border-color:rgba(23,201,174,.4)}
.faq-item summary{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:#fff;cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex-shrink:0;width:14px;height:14px;
  background:
    linear-gradient(var(--brand),var(--brand)) center/14px 2px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/2px 14px no-repeat;
  transition:transform .26s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open]{border-color:rgba(23,201,174,.45);background:rgba(23,201,174,.05)}
.faq-item[open] .faq-body{border-left:2px solid var(--brand)}
.faq-body{padding:0 22px 20px 22px;font-size:15px;color:var(--ink-300);line-height:1.9}
.faq-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}

/* ---------- related channels (offset) ---------- */
.channel-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding-top:8px}
.channel-card{
  display:block;padding:26px;border-radius:var(--r-md);
  background:var(--bg-700);border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
  transition:transform .26s var(--ease),border-color .26s var(--ease);
}
.channel-card:nth-child(1){transform:translateY(0)}
.channel-card:nth-child(2){transform:translateY(26px)}
.channel-card:nth-child(3){transform:translateY(-12px)}
.channel-card:hover{transform:translateY(2px);border-color:rgba(23,201,174,.5)}
.channel-card .cc-ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(23,201,174,.12);border:1px solid rgba(23,201,174,.3);margin-bottom:16px;
}
.channel-card h3{font-size:18px;font-weight:600;color:#fff;margin-bottom:8px}
.channel-card p{font-size:14px;color:var(--ink-300);line-height:1.8;margin-bottom:14px}
.channel-card span.goto{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.channel-row-wrap{margin-bottom:26px}

/* ---------- cta band ---------- */
.cta-band{
  border-radius:var(--r-lg);
  border:1px solid rgba(255,138,61,.45);
  background:linear-gradient(135deg,rgba(255,138,61,.14),rgba(16,28,51,.85) 62%);
  padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:0 18px 40px rgba(3,8,18,.4);
}
.cta-band h2{font-size:clamp(21px,2.4vw,26px);font-weight:700;color:#fff;line-height:1.4}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--ink-300);max-width:560px;line-height:1.82}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:24px;background:#060B14;border-top:1px solid rgba(255,255,255,.08);
  padding:60px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}
.footer-desc{font-size:14px;color:var(--ink-300);line-height:1.85;max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{font-size:14px;color:var(--ink-300)}
.footer-col ul a:hover{color:var(--brand)}
.footer-contact li{font-size:14px;color:var(--ink-100);display:flex;flex-direction:column;gap:3px}
.footer-contact li span{font-size:12.5px;color:var(--ink-500)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--ink-500);
}
.fb-links{display:flex;align-items:center;gap:16px;font-size:12px;color:var(--ink-500)}
.fb-links a{color:var(--ink-300)}
.fb-links a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .hero-grid{gap:36px}
  .search-box{width:180px}
  .search-box:focus-within{width:200px}
}
@media (max-width:1024px){
  .header-inner{gap:16px}
  .main-nav a{padding:0 10px;font-size:14.5px}
  .main-nav a::after{left:10px;right:10px}
  .search-box{display:none}
  .hero-grid{grid-template-columns:1fr;padding:40px 0 48px;gap:34px}
  .hero-lead{max-width:100%}
  .hero-media .shot img{aspect-ratio:16/9}
  .prepare-list{grid-template-columns:1fr}
  .channel-row{grid-template-columns:1fr;gap:18px}
  .channel-card:nth-child(2),.channel-card:nth-child(3){transform:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:860px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:64px}
  .logo{font-size:16px}
  .logo svg{width:23px;height:23px}
  body.nav-open .main-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:fixed;top:76px;left:16px;right:16px;z-index:130;
    padding:14px;border-radius:18px;
    background:rgba(11,20,36,.97);
    border:1px solid var(--glass-line);
    backdrop-filter:blur(14px);
    box-shadow:0 24px 50px rgba(3,8,18,.6);
  }
  body.nav-open .main-nav a{
    height:48px;padding:0 14px;border-radius:12px;color:var(--ink-100);
    font-size:15px;font-weight:500;justify-content:flex-start;
  }
  body.nav-open .main-nav a::after{display:none}
  body.nav-open .main-nav a:hover{background:rgba(23,201,174,.12);color:#fff}
  body.nav-open .main-nav a.active{background:rgba(23,201,174,.16);color:#fff;font-weight:700}
  .help-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section.tight{padding:44px 0}
  .cta-band{padding:28px 24px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .page-hero h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .hero-media .float-card{left:8px;bottom:-14px;padding:10px 14px}
  .hero-media .float-card b{font-size:18px}
  .hero-media .float-tag{right:0;top:-12px;font-size:12px;padding:6px 12px}
  .help-card{padding:22px 20px 22px 22px}
  .help-card h3{font-size:17px}
  .prepare-strip{padding:22px 18px}
  .faq-item summary{font-size:15px;padding:16px 18px}
  .faq-body{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .site-footer{padding:44px 0 22px}
  .cta-band .btn{width:100%}
}