/* roulang page: index */
:root{
  --ink-900:#0b1220;
  --ink-800:#111a2b;
  --ink-700:#1b2740;
  --paper:#f7f9fc;
  --paper-2:#eef2f8;
  --white:#ffffff;
  --text:#16202f;
  --text-soft:#5d6d85;
  --text-invert:#e8eefa;
  --text-invert-soft:#9fb0c9;
  --accent:#2f6df6;
  --accent-deep:#1f52c9;
  --accent-soft:#e7efff;
  --mint:#12b8a0;
  --line:#e2e8f2;
  --line-strong:#cfdcf5;
  --line-dark:rgba(255,255,255,.10);
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:18px;
  --shadow-sm:0 1px 2px rgba(16,28,48,.05),0 4px 14px rgba(16,28,48,.05);
  --shadow-md:0 10px 28px rgba(16,28,48,.10);
  --shadow-lg:0 20px 54px rgba(16,28,48,.16);
  --ease:.22s cubic-bezier(.4,0,.2,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:15px;
  line-height:1.78;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease);}
h1,h2,h3,h4,h5,p,ul,ol,figure,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

.wrap{width:min(1180px,calc(100% - 44px));margin-inline:auto;}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,28,48,.09);}
.header-inner{display:flex;align-items:center;gap:26px;height:64px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),#5f8dff);
  color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:16px;letter-spacing:0;
  box-shadow:0 6px 16px rgba(47,109,246,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--text-soft);letter-spacing:1.2px;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 13px;border-radius:9px;
  font-size:14.5px;font-weight:500;color:var(--text-soft);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:var(--paper-2);}
.nav-link.active{color:var(--accent);font-weight:700;background:var(--accent-soft);}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:10px;padding:0;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ===== buttons ===== */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:9px;border:1px solid transparent;
  font-size:14.5px;font-weight:600;letter-spacing:.2px;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-x--primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(47,109,246,.28);}
.btn-x--primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(47,109,246,.34);}
.btn-x--ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff;}
.btn-x--ghost:hover{background:rgba(255,255,255,.17);color:#fff;transform:translateY(-2px);}
.btn-x--outline{background:#fff;border-color:var(--line-strong);color:var(--text);}
.btn-x--outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-x--sm{padding:8px 16px;font-size:13.5px;border-radius:8px;}

/* ===== hero ===== */
.hero{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;isolation:isolate;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.40;transform:scale(1.04);}
.hero-veil{
  position:absolute;inset:0;
  background:radial-gradient(115% 95% at 12% 18%,rgba(11,18,32,.45),rgba(11,18,32,.93) 64%),
             linear-gradient(180deg,rgba(11,18,32,.86),rgba(11,18,32,.99));
}
.hero-inner{position:relative;z-index:2;padding:92px 0 104px;}
.hero-copy{max-width:770px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:2.4px;font-weight:700;color:#7ea6ff;
  padding:7px 14px;border-radius:999px;border:1px solid rgba(126,166,255,.34);
  background:rgba(47,109,246,.14);
}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:#7ea6ff;box-shadow:0 0 0 4px rgba(126,166,255,.16);}
.hero h1{
  margin-top:22px;
  font-size:clamp(29px,4vw,44px);
  line-height:1.26;font-weight:800;letter-spacing:.4px;
  color:#fff;text-shadow:0 2px 24px rgba(0,0,0,.30);
}
.hero-sub{margin-top:20px;max-width:700px;font-size:15.5px;line-height:1.85;color:rgba(232,238,250,.80);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:30px;}
.hero-tags li{
  font-size:13px;padding:6px 14px;border-radius:999px;
  color:#c8d6ef;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
}

/* ===== stat strip ===== */
.stat-strip{position:relative;z-index:5;margin-top:-46px;}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);overflow:hidden;
}
.stat{padding:24px 22px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat strong{display:block;font-size:27px;font-weight:800;color:var(--accent);letter-spacing:.4px;line-height:1.2;}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-soft);}

/* ===== section base ===== */
.section{padding:74px 0;}
.section--tight{padding:54px 0;}
.section--paper{background:var(--paper-2);}
.section--dark{background:var(--ink-900);color:var(--text-invert);}
.section--dark .section-title{color:#fff;}
.section--dark .section-desc{color:var(--text-invert-soft);}
.section-head{max-width:740px;margin-bottom:38px;}
.section-head--center{margin-inline:auto;text-align:center;}
.section-head--center .kicker{justify-content:center;}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--accent);
  margin-bottom:14px;
}
.kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent);}
.section--dark .kicker{color:#7ea6ff;}
.section--dark .kicker::before{background:#7ea6ff;}
.section-title{font-size:clamp(22px,2.5vw,30px);font-weight:800;line-height:1.36;letter-spacing:.2px;}
.section-desc{margin-top:14px;font-size:15px;color:var(--text-soft);line-height:1.85;}

/* ===== grids ===== */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}

/* ===== cards ===== */
.card-x{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:26px;height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.card-icon{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent);margin-bottom:16px;
}
.card-icon svg{width:21px;height:21px;}
.card-x h3{font-size:16.5px;font-weight:700;margin-bottom:10px;letter-spacing:.2px;}
.card-x p{font-size:14px;color:var(--text-soft);line-height:1.8;}

.tag-x{
  display:inline-block;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--accent);
  background:var(--accent-soft);letter-spacing:.3px;
}
.tag-x--mint{color:#0a7f70;background:#e2f7f3;}
.tag-x--gray{color:var(--text-soft);background:var(--paper-2);}

/* ===== spec table ===== */
.table-scroll{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-sm);}
.spec-table{width:100%;min-width:560px;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14px;}
.spec-table caption{caption-side:top;text-align:left;padding:0 0 12px;font-weight:700;font-size:15px;color:var(--text);}
.spec-table th{
  background:var(--ink-900);color:#fff;text-align:left;font-weight:600;
  padding:14px 18px;font-size:13.5px;letter-spacing:.5px;white-space:nowrap;
}
.spec-table td{padding:14px 18px;border-top:1px solid var(--line);color:var(--text-soft);}
.spec-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap;}
.spec-table tbody tr{transition:background var(--ease);}
.spec-table tbody tr:hover td{background:#f4f8ff;color:var(--text);}

/* ===== channel wall ===== */
.channel-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.channel-thumb{position:relative;aspect-ratio:16/7;overflow:hidden;background:var(--ink-800);}
.channel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.channel-card:hover .channel-thumb img{transform:scale(1.04);}
.channel-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.channel-body h3{font-size:17px;font-weight:700;margin-bottom:10px;}
.channel-body p{font-size:14px;color:var(--text-soft);line-height:1.8;flex:1;}
.channel-link{
  margin-top:16px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--accent);
}
.channel-link::after{content:"→";transition:transform var(--ease);}
.channel-card:hover .channel-link::after{transform:translateX(4px);}

/* ===== case cards ===== */
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.case-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800);}
.case-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.case-card:hover figure img{transform:scale(1.05);}
.case-body{padding:22px 22px 24px;}
.case-body h3{font-size:16px;font-weight:700;margin:12px 0 10px;}
.case-body p{font-size:14px;color:var(--text-soft);line-height:1.8;}

/* ===== steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px 22px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:-14px;left:22px;
  font-size:13px;font-weight:800;letter-spacing:1px;color:#fff;
  background:var(--accent);padding:3px 12px;border-radius:999px;
  box-shadow:0 8px 18px rgba(47,109,246,.3);
}
.step h3{font-size:16px;font-weight:700;margin:8px 0 10px;}
.step p{font-size:13.8px;color:var(--text-soft);line-height:1.8;}

/* ===== topic cards ===== */
.topic-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.topic-card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:var(--ink-800);}
.topic-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.topic-card:hover figure img{transform:scale(1.05);}
.topic-body{padding:20px 20px 22px;}
.topic-body h3{font-size:15.5px;font-weight:700;margin:10px 0 8px;line-height:1.5;}
.topic-body p{font-size:13.8px;color:var(--text-soft);line-height:1.78;}

/* ===== myths ===== */
.myth{
  display:grid;grid-template-columns:auto 1fr;gap:16px;
  padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
}
.myth-badge{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  font-weight:800;font-size:14px;color:#b4462f;background:#fdece8;
}
.myth h3{font-size:15px;font-weight:700;margin-bottom:6px;color:#a63a24;}
.myth p{font-size:13.8px;color:var(--text-soft);line-height:1.8;}
.myth p b{color:var(--text);font-weight:700;}

/* ===== probability bars ===== */
.bars{display:grid;gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow-sm);}
.bar-row{display:grid;grid-template-columns:78px 1fr 66px;align-items:center;gap:16px;}
.bar-row span:first-child{font-size:14px;font-weight:700;}
.bar-track{height:10px;border-radius:999px;background:var(--paper-2);overflow:hidden;}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),#6f9bff);}
.bar-fill--mint{background:linear-gradient(90deg,var(--mint),#5fd8c7);}
.bar-fill--gray{background:linear-gradient(90deg,#8a9ab2,#b3c0d3);}
.bar-row em{font-style:normal;font-size:14px;font-weight:700;color:var(--text-soft);text-align:right;}

/* ===== news / cms ===== */
.news-layout{display:grid;grid-template-columns:1.55fr 1fr;gap:28px;align-items:start;}
.post-list{display:grid;gap:14px;}
.post-item{
  display:grid;grid-template-columns:118px 1fr;gap:18px;padding:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.post-item figure{margin:0;width:118px;height:82px;border-radius:9px;overflow:hidden;background:var(--ink-800);}
.post-item figure img{width:100%;height:100%;object-fit:cover;}
.post-main{min-width:0;}
.post-main h3{font-size:15px;font-weight:700;line-height:1.5;margin-bottom:6px;}
.post-main p{font-size:13.4px;color:var(--text-soft);line-height:1.7;}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;font-size:12.4px;color:#8494ab;}
.post-meta em{font-style:normal;color:var(--accent);font-weight:600;}
.aside-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);}
.aside-box h3{font-size:15.5px;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.aside-box + .aside-box{margin-top:20px;}
.aside-list li{padding:11px 0;border-bottom:1px dashed var(--line);}
.aside-list li:last-child{border-bottom:0;padding-bottom:0;}
.aside-list a{font-size:14px;font-weight:600;display:block;line-height:1.6;}
.aside-list a:hover{color:var(--accent);}
.aside-list span{display:block;font-size:12.4px;color:#8494ab;margin-top:3px;}
.empty-note{padding:26px;background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);color:var(--text-soft);font-size:14px;}

/* ===== testimonials ===== */
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);height:100%;
  display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.quote p{font-size:14px;color:var(--text);line-height:1.85;flex:1;}
.quote footer{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);}
.avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent);font-weight:800;font-size:14px;
}
.quote footer b{display:block;font-size:13.8px;}
.quote footer span{display:block;font-size:12.4px;color:var(--text-soft);}

/* ===== partners ===== */
.partner-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;}
.partner{
  display:grid;place-items:center;text-align:center;
  padding:20px 12px;border-radius:var(--radius);background:rgba(255,255,255,.05);
  border:1px solid var(--line-dark);color:#c4d2e8;font-size:13.5px;font-weight:600;
  letter-spacing:.4px;line-height:1.5;
  transition:background var(--ease),border-color var(--ease),transform var(--ease);
}
.partner:hover{background:rgba(255,255,255,.1);border-color:rgba(126,166,255,.5);transform:translateY(-3px);color:#fff;}

/* ===== notice bar ===== */
.notice{
  display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--mint);
  border-radius:var(--radius);padding:24px 26px;box-shadow:var(--shadow-sm);
}
.notice h3{font-size:15.5px;font-weight:700;margin-bottom:8px;}
.notice p{font-size:14px;color:var(--text-soft);line-height:1.8;}
.notice ul{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 22px;margin-top:12px;}
.notice li{font-size:13.6px;color:var(--text-soft);position:relative;padding-left:16px;}
.notice li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--mint);}

/* ===== subscribe ===== */
.subscribe{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
  border-radius:0;isolation:isolate;
}
.subscribe-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.24;}
.subscribe-veil{position:absolute;inset:0;background:linear-gradient(110deg,rgba(11,18,32,.96),rgba(11,18,32,.78));}
.subscribe-inner{position:relative;z-index:2;padding:72px 0;}
.subscribe-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.subscribe h2{font-size:clamp(22px,2.5vw,29px);font-weight:800;line-height:1.35;color:#fff;}
.subscribe .lead{margin-top:16px;font-size:14.8px;color:rgba(232,238,250,.78);line-height:1.85;}
.subscribe-points{margin-top:22px;display:grid;gap:10px;}
.subscribe-points li{font-size:14px;color:#c8d6ef;padding-left:20px;position:relative;}
.subscribe-points li::before{content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:3px;background:var(--accent);}
.form-card{background:#fff;border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-lg);color:var(--text);}
.form-card h3{font-size:17px;font-weight:800;margin-bottom:6px;}
.form-card .hint{font-size:13.2px;color:var(--text-soft);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.4px;font-weight:700;margin-bottom:7px;color:var(--text);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:9px;
  font-size:14.4px;font-family:inherit;color:var(--text);background:#fbfcfe;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{resize:vertical;min-height:84px;}
.field input::placeholder,.field textarea::placeholder{color:#a3b0c2;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:#fff;
  box-shadow:0 0 0 3px rgba(47,109,246,.15);
}
.form-card .btn-x{width:100%;margin-top:6px;}
.form-tip{margin-top:14px;font-size:12.6px;color:#8494ab;line-height:1.7;}
.form-status{margin-top:12px;font-size:13.2px;font-weight:600;color:var(--mint);display:none;}
.form-status.is-on{display:block;}

/* ===== footer ===== */
.site-footer{background:var(--ink-900);color:var(--text-invert-soft);padding:58px 0 26px;border-top:1px solid var(--line-dark);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800;}
.footer-about{font-size:13.8px;line-height:1.85;max-width:360px;}
.footer-col h4{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:16px;letter-spacing:.4px;}
.footer-col a{display:block;padding:5px 0;font-size:13.8px;color:var(--text-invert-soft);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:12.8px;color:#7d8ea6;
}
.footer-bottom a{color:#9fb0c9;}
.footer-bottom a:hover{color:#fff;}

/* ===== responsive ===== */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);gap:26px;}
  .partner-wall{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .news-layout{grid-template-columns:1fr;}
  .subscribe-layout{grid-template-columns:1fr;gap:32px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:64px;left:-1px;right:-1px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:12px;border:1px solid var(--line);border-top:0;
    border-radius:0 0 14px 14px;box-shadow:0 20px 34px rgba(16,28,48,.14);
    display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-toggle{display:flex;}
  .header-actions .btn-x--primary{display:none;}
}
@media (max-width:768px){
  .wrap{width:calc(100% - 32px);}
  .section{padding:54px 0;}
  .section--tight{padding:42px 0;}
  .hero-inner{padding:64px 0 78px;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:14.6px;}
  .grid-2,.grid-3,.grid-4,.steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .stat-strip{margin-top:-30px;}
  .notice{grid-template-columns:1fr;}
  .notice ul{grid-template-columns:1fr;}
  .post-item{grid-template-columns:1fr;}
  .post-item figure{width:100%;height:158px;}
  .bar-row{grid-template-columns:64px 1fr 56px;gap:10px;}
  .form-card{padding:24px 20px;}
  .subscribe-inner{padding:54px 0;}
  .btn-x{width:100%;}
  .hero-actions .btn-x{width:auto;}
}
@media (max-width:520px){
  .partner-wall{grid-template-columns:repeat(2,1fr);}
  .brand-text em{display:none;}
  .brand-text strong{font-size:15.5px;}
  .hero-tags li{font-size:12.2px;padding:5px 11px;}
  .card-x,.quote{padding:20px;}
  .section-title{font-size:21px;}
  .myth{grid-template-columns:1fr;}
  .myth-badge{width:30px;height:30px;font-size:12.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-x{width:100%;}
}

/* roulang page: article */
:root{
 --ink-900:#0b1220;
 --ink-800:#111a2b;
 --ink-700:#1b2740;
 --paper:#f7f9fc;
 --paper-2:#eef2f8;
 --white:#ffffff;
 --text:#16202f;
 --text-soft:#5d6d85;
 --text-invert:#e8eefa;
 --text-invert-soft:#9fb0c9;
 --accent:#2f6df6;
 --accent-deep:#1f52c9;
 --accent-soft:#e7efff;
 --mint:#12b8a0;
 --line:#e2e8f2;
 --line-strong:#cfdcf5;
 --line-dark:rgba(255,255,255,.10);
 --radius-sm:8px;
 --radius:12px;
 --radius-lg:18px;
 --shadow-sm:0 1px 2px rgba(16,28,48,.05),0 4px 14px rgba(16,28,48,.05);
 --shadow-md:0 10px 28px rgba(16,28,48,.10);
 --shadow-lg:0 20px 54px rgba(16,28,48,.16);
 --ease:.22s cubic-bezier(.4,0,.2,1);
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--font);
 font-size:15px;
 line-height:1.78;
 color:var(--text);
 background:var(--paper);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;color:var(--text);line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
:focus-visible{outline:3px solid rgba(47,109,246,.42);outline-offset:2px;border-radius:6px;}

/* ===== header ===== */
.site-header{
 position:sticky;top:0;z-index:200;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,28,48,.09);}
.header-inner{display:flex;align-items:center;gap:26px;height:64px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 background:linear-gradient(135deg,var(--accent),#5f8dff);
 color:#fff;display:grid;place-items:center;
 font-weight:800;font-size:16px;letter-spacing:0;
 box-shadow:0 6px 16px rgba(47,109,246,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--text-soft);letter-spacing:1.2px;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 position:relative;padding:8px 13px;border-radius:9px;
 font-size:14.5px;font-weight:500;color:var(--text-soft);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:var(--paper-2);}
.nav-link.active{color:var(--accent);font-weight:700;background:var(--accent-soft);}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 background:#fff;border-radius:10px;padding:0;cursor:pointer;
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ===== buttons ===== */
.btn-x{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;letter-spacing:.2px;cursor:pointer;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-x--primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(47,109,246,.28);}
.btn-x--primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(47,109,246,.34);}
.btn-x--ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff;}
.btn-x--ghost:hover{background:rgba(255,255,255,.17);color:#fff;transform:translateY(-2px);}
.btn-x--outline{background:#fff;border-color:var(--line-strong);color:var(--text);}
.btn-x--outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-x--sm{padding:8px 16px;font-size:13.5px;border-radius:8px;}

/* ===== article hero ===== */
.article-hero{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;isolation:isolate;}
.article-hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;transform:scale(1.05);}
.article-hero__veil{
 position:absolute;inset:0;
 background:radial-gradient(115% 95% at 14% 20%,rgba(11,18,32,.50),rgba(11,18,32,.94) 66%),
 linear-gradient(180deg,rgba(11,18,32,.88),rgba(11,18,32,.99));
}
.article-hero__inner{position:relative;z-index:2;padding:52px 0 58px;max-width:980px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--text-invert-soft);}
.crumb a{color:#b9caea;}
.crumb a:hover{color:#fff;}
.crumb span.sep{color:rgba(255,255,255,.28);}
.hero-eyebrow{
 display:inline-flex;align-items:center;gap:9px;margin-top:22px;
 font-size:12.5px;letter-spacing:2.2px;font-weight:700;color:#7ea6ff;
 padding:7px 14px;border-radius:999px;border:1px solid rgba(126,166,255,.34);
 background:rgba(47,109,246,.14);
}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:#7ea6ff;box-shadow:0 0 0 4px rgba(126,166,255,.16);}
.article-hero h1{
 margin-top:20px;
 font-size:clamp(26px,3.4vw,40px);
 line-height:1.3;color:#fff;letter-spacing:.4px;
 text-shadow:0 2px 24px rgba(0,0,0,.32);
}
.article-lead{margin-top:18px;max-width:820px;font-size:15px;line-height:1.9;color:rgba(232,238,250,.82);}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px;}
.meta-chip{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.5px;padding:6px 14px;border-radius:999px;
 color:#c8d6ef;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
}
.meta-chip--accent{color:#bcd0ff;border-color:rgba(126,166,255,.38);background:rgba(47,109,246,.16);}
.hero-wrap{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;}

/* ===== sections ===== */
.section{padding:70px 0;}
.section--tight{padding:52px 0;}
.section--paper{background:var(--paper-2);}
.section--dark{background:var(--ink-900);color:var(--text-invert);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:30px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--accent);}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.section-head h2{font-size:clamp(21px,2.4vw,27px);margin-top:10px;letter-spacing:.2px;}
.section-head p{max-width:600px;font-size:14px;color:var(--text-soft);line-height:1.8;margin-top:8px;}
.section--dark .section-head h2{color:#fff;}
.section--dark .section-head p{color:var(--text-invert-soft);}
.section--dark .section-head .eyebrow{color:#7ea6ff;}
.section--dark .section-head .eyebrow::before{background:#7ea6ff;}

/* ===== article layout ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start;}
.article-main{min-width:0;}
.article-body{
 max-width:760px;
 font-size:15.5px;line-height:1.86;color:var(--text);
}
.article-body h2{
 font-size:23px;margin:38px 0 14px;padding-left:14px;
 border-left:4px solid var(--accent);line-height:1.4;letter-spacing:.2px;
}
.article-body h3{font-size:18.5px;margin:28px 0 12px;color:var(--ink-800);}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body p{margin:0 0 16px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body li{margin-bottom:9px;}
.article-body strong{color:var(--ink-800);font-weight:700;}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-deep);}
.article-body img{border-radius:var(--radius);margin:22px 0;box-shadow:var(--shadow-sm);}
.article-body blockquote{
 margin:22px 0;padding:16px 22px;border-left:4px solid var(--mint);
 background:var(--paper-2);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-soft);
}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left;}
.article-body th{background:var(--paper-2);font-weight:700;color:var(--ink-800);}
.article-empty{
 max-width:760px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-sm);padding:34px 30px;
}
.article-empty h2{font-size:20px;margin-bottom:10px;}
.article-empty p{color:var(--text-soft);font-size:14.5px;margin-bottom:20px;}

/* ===== sidebar ===== */
.article-side{position:sticky;top:86px;display:flex;flex-direction:column;gap:18px;}
.side-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:20px 20px 18px;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.side-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.side-card h3{font-size:14.5px;font-weight:800;display:flex;align-items:center;gap:9px;margin-bottom:12px;letter-spacing:.2px;}
.side-card h3 svg{width:18px;height:18px;stroke:var(--accent);fill:none;stroke-width:1.7;}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px;}
.side-list li{position:relative;padding-left:16px;font-size:13.8px;line-height:1.72;color:var(--text-soft);}
.side-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--accent);opacity:.7;}
.side-list strong{color:var(--text);font-weight:700;}
.side-note{font-size:12.8px;color:var(--text-soft);line-height:1.75;margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);}
.side-stat{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:4px;}
.side-stat div{background:var(--paper-2);border-radius:var(--radius-sm);padding:11px 12px;}
.side-stat b{display:block;font-size:17px;color:var(--accent);letter-spacing:.3px;}
.side-stat span{font-size:12px;color:var(--text-soft);}

/* ===== keypoint cards ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.info-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:22px 22px 20px;height:100%;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.info-card .icon{
 width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
 background:var(--accent-soft);margin-bottom:14px;
}
.info-card .icon svg{width:20px;height:20px;stroke:var(--accent);fill:none;stroke-width:1.7;}
.info-card h3{font-size:16px;margin-bottom:9px;}
.info-card p{font-size:14px;line-height:1.8;color:var(--text-soft);}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px;}
.tag{font-size:12px;padding:4px 11px;border-radius:999px;background:var(--paper-2);color:var(--text-soft);border:1px solid var(--line);}

/* ===== channel ===== */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.channel-card{
 display:flex;flex-direction:column;overflow:hidden;background:#fff;
 border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.channel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800);}
.channel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.channel-card:hover .channel-thumb img{transform:scale(1.05);}
.channel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,18,32,0) 40%,rgba(11,18,32,.55));}
.channel-body{padding:18px 20px 20px;}
.channel-body h3{font-size:16.5px;margin-bottom:8px;}
.channel-body p{font-size:13.8px;line-height:1.78;color:var(--text-soft);}
.channel-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--accent);}
.channel-card:hover .channel-more{color:var(--accent-deep);}

/* ===== faq ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px;}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:0;overflow:hidden;
 transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-md);}
.faq-item summary{
 cursor:pointer;list-style:none;padding:17px 22px;
 font-size:15px;font-weight:700;color:var(--ink-800);
 display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
 content:"+";font-size:19px;font-weight:600;color:var(--accent);line-height:1;
 transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item p{padding:0 22px 18px;font-size:14.2px;line-height:1.85;color:var(--text-soft);}

/* ===== subscribe ===== */
.subscribe-card{
 background:linear-gradient(135deg,var(--ink-800),var(--ink-700));
 border:1px solid rgba(255,255,255,.10);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-lg);padding:40px;display:grid;
 grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;
}
.subscribe-card h2{font-size:clamp(21px,2.4vw,26px);color:#fff;}
.subscribe-card p{margin-top:12px;font-size:14.2px;line-height:1.85;color:var(--text-invert-soft);}
.subscribe-form{display:flex;gap:10px;flex-wrap:wrap;}
.subscribe-form input{
 flex:1 1 190px;min-width:0;padding:12px 16px;border-radius:9px;
 border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);
 color:#fff;font-size:14px;font-family:inherit;
 transition:border-color var(--ease),background var(--ease);
}
.subscribe-form input::placeholder{color:rgba(232,238,250,.45);}
.subscribe-form input:focus{outline:none;border-color:#7ea6ff;background:rgba(255,255,255,.12);}
.form-hint{margin-top:12px;font-size:12.8px;line-height:1.7;color:var(--text-invert-soft);min-height:18px;}
.form-hint.is-error{color:#ffb3b3;}
.form-hint.is-ok{color:#8ff0dd;}

/* ===== back bar ===== */
.back-bar{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:20px 24px;
}
.back-bar p{font-size:14.2px;color:var(--text-soft);}
.back-bar strong{color:var(--text);}

/* ===== footer ===== */
.site-footer{background:var(--ink-900);color:var(--text-invert);padding:56px 0 26px;border-top:1px solid var(--line-dark);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16.5px;color:#fff;}
.footer-about{font-size:13.6px;line-height:1.85;color:var(--text-invert-soft);max-width:400px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.4px;}
.footer-col a{display:block;font-size:13.6px;color:var(--text-invert-soft);padding:5px 0;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
 margin-top:36px;padding-top:20px;border-top:1px solid var(--line-dark);
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
 font-size:12.8px;color:var(--text-invert-soft);
}
.footer-bottom a{color:var(--text-invert-soft);}
.footer-bottom a:hover{color:#fff;}

/* ===== responsive ===== */
@media (max-width:1024px){
 .article-layout{grid-template-columns:1fr;gap:34px;}
 .article-side{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
 .card-grid,.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .subscribe-card{grid-template-columns:1fr;padding:32px;}
 .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:992px){
 .main-nav{
  position:absolute;top:64px;left:0;right:0;margin-left:0;
  background:#fff;border-bottom:1px solid var(--line);
  flex-direction:column;align-items:stretch;gap:2px;
  padding:10px 18px 16px;display:none;box-shadow:var(--shadow-md);
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:12px 14px;font-size:15px;}
 .nav-toggle{display:flex;}
 .brand{margin-right:auto;}
}
@media (max-width:768px){
 .section{padding:52px 0;}
 .section--tight{padding:40px 0;}
 .article-hero__inner{padding:40px 0 46px;}
 .article-body{font-size:15px;}
 .article-body h2{font-size:20.5px;}
 .brand-text em{display:none;}
 .card-grid,.channel-grid,.article-side{grid-template-columns:1fr;}
 .faq-item summary{padding:15px 18px;font-size:14.5px;}
 .faq-item p{padding:0 18px 16px;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .back-bar{padding:18px;}
}
@media (max-width:520px){
 .wrap{padding:0 16px;}
 .header-inner{height:60px;gap:14px;}
 .main-nav{top:60px;}
 .btn-x{width:100%;}
 .header-actions .btn-x--sm{width:auto;}
 .hero-wrap .btn-x{width:100%;}
 .article-meta{gap:8px;}
 .meta-chip{font-size:12px;}
 .subscribe-card{padding:24px 20px;}
 .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
 --ink-900:#0b1220;
 --ink-800:#111a2b;
 --ink-700:#1b2740;
 --paper:#f7f9fc;
 --paper-2:#eef2f8;
 --white:#ffffff;
 --text:#16202f;
 --text-soft:#5d6d85;
 --text-invert:#e8eefa;
 --text-invert-soft:#9fb0c9;
 --accent:#2f6df6;
 --accent-deep:#1f52c9;
 --accent-soft:#e7efff;
 --mint:#12b8a0;
 --line:#e2e8f2;
 --line-strong:#cfdcf5;
 --line-dark:rgba(255,255,255,.10);
 --radius-sm:8px;
 --radius:12px;
 --radius-lg:18px;
 --shadow-sm:0 1px 2px rgba(16,28,48,.05),0 4px 14px rgba(16,28,48,.05);
 --shadow-md:0 10px 28px rgba(16,28,48,.10);
 --shadow-lg:0 20px 54px rgba(16,28,48,.16);
 --ease:.22s cubic-bezier(.4,0,.2,1);
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--font);
 font-size:15px;
 line-height:1.78;
 color:var(--text);
 background:var(--paper);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}
:focus-visible{outline:3px solid rgba(47,109,246,.42);outline-offset:2px;border-radius:6px;}

/* ================= header ================= */
.site-header{
 position:sticky;top:0;z-index:200;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,28,48,.09);}
.header-inner{display:flex;align-items:center;gap:26px;height:64px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 background:linear-gradient(135deg,var(--accent),#5f8dff);
 color:#fff;display:grid;place-items:center;
 font-weight:800;font-size:16px;letter-spacing:0;
 box-shadow:0 6px 16px rgba(47,109,246,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--text-soft);letter-spacing:1.2px;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 position:relative;padding:8px 13px;border-radius:9px;
 font-size:14.5px;font-weight:500;color:var(--text-soft);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:var(--paper-2);}
.nav-link.active{color:var(--accent);font-weight:700;background:var(--accent-soft);}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 background:#fff;border-radius:10px;padding:0;cursor:pointer;
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ================= buttons ================= */
.btn-x{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;letter-spacing:.2px;cursor:pointer;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-x--primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(47,109,246,.28);}
.btn-x--primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(47,109,246,.34);}
.btn-x--outline{background:#fff;border-color:var(--line-strong);color:var(--text);}
.btn-x--outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-x--sm{padding:8px 16px;font-size:13.5px;border-radius:8px;}
.btn-x--block{width:100%;}

/* ================= hero ================= */
.hero-soft{
 position:relative;overflow:hidden;isolation:isolate;
 background:
 radial-gradient(820px 400px at 6% -6%, #e6eeff 0%, rgba(230,238,255,0) 62%),
 radial-gradient(680px 360px at 96% 18%, #e3f8f4 0%, rgba(227,248,244,0) 60%),
 linear-gradient(180deg,#ffffff 0%, var(--paper) 100%);
 border-bottom:1px solid var(--line);
}
.hero-soft::before{
 content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
 background:radial-gradient(circle,rgba(47,109,246,.16),rgba(47,109,246,0) 70%);
 pointer-events:none;z-index:0;
}
.hero-soft-inner{position:relative;z-index:1;padding:66px 0 58px;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;font-weight:700;letter-spacing:1.8px;color:var(--accent-deep);
 padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line-strong);
 box-shadow:var(--shadow-sm);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(18,184,160,.16);}
.hero-title{
 margin-top:20px;
 font-size:clamp(28px,3.6vw,42px);
 line-height:1.28;font-weight:800;letter-spacing:.3px;color:var(--ink-900);
}
.hero-title .hl{color:var(--accent-deep);}
.hero-lead{margin-top:18px;font-size:15.5px;line-height:1.85;color:var(--text-soft);max-width:620px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-points li{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:600;color:var(--ink-700);
 padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
 box-shadow:var(--shadow-sm);
}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-visual{position:relative;}
.hero-visual img{
 width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
 border:1px solid #fff;box-shadow:var(--shadow-lg);
}
.hero-float{
 position:absolute;left:-18px;bottom:-22px;
 display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-md);overflow:hidden;min-width:246px;
}
.float-cell{padding:13px 18px;border-right:1px solid var(--line);}
.float-cell:last-child{border-right:0;}
.float-cell strong{display:block;font-size:17px;font-weight:800;color:var(--ink-900);line-height:1.3;}
.float-cell span{display:block;font-size:11.5px;color:var(--text-soft);letter-spacing:.6px;margin-top:3px;}

/* ================= stat strip ================= */
.stat-strip-wrap{position:relative;z-index:2;margin-top:-30px;}
.stat-strip{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-md);overflow:hidden;
}
.stat-item{padding:22px 24px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:22px;font-weight:800;color:var(--accent-deep);letter-spacing:.4px;line-height:1.25;}
.stat-num small{font-size:13px;font-weight:700;color:var(--text-soft);margin-left:3px;}
.stat-label{font-size:13px;color:var(--text-soft);margin-top:6px;line-height:1.6;}

/* ================= section base ================= */
.section{padding:72px 0;}
.section--tight{padding:52px 0;}
.section--paper{background:var(--paper-2);}
.section--white{background:#fff;}
.section--dark{background:var(--ink-900);color:var(--text-invert);}
.section--dark .sec-title{color:#fff;}
.section--dark .sec-desc{color:var(--text-invert-soft);}
.sec-head{max-width:760px;margin-bottom:38px;}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-kicker{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--accent-deep);
 text-transform:uppercase;
}
.sec-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent);}
.section--dark .sec-kicker{color:#8fb2ff;}
.section--dark .sec-kicker::before{background:#8fb2ff;}
.sec-title{margin-top:12px;font-size:clamp(22px,2.5vw,30px);font-weight:800;line-height:1.4;letter-spacing:.2px;color:var(--ink-900);}
.sec-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-soft);}

/* ================= grids & cards ================= */
.grid{display:grid;gap:20px;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}
.card-x{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:24px;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
 height:100%;
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.card-icon{
 width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
 background:var(--accent-soft);color:var(--accent-deep);font-weight:800;font-size:15px;
 margin-bottom:16px;letter-spacing:.5px;
}
.card-icon--mint{background:#e2f7f3;color:#0d8f7d;}
.card-title{font-size:16.5px;font-weight:700;color:var(--ink-900);line-height:1.5;}
.card-text{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--text-soft);}
.card-tag{
 display:inline-block;margin-top:16px;font-size:12px;font-weight:600;
 color:var(--accent-deep);background:var(--accent-soft);
 padding:4px 11px;border-radius:999px;letter-spacing:.4px;
}
.card-thumb{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);margin-bottom:18px;}

/* ================= split / panel ================= */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start;}
.prose p{font-size:15px;line-height:1.88;color:var(--text-soft);margin-bottom:14px;}
.prose p strong{color:var(--ink-900);font-weight:700;}
.panel{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-sm);padding:8px 0;overflow:hidden;
}
.panel-head{
 padding:18px 24px 16px;border-bottom:1px solid var(--line);
 font-size:14px;font-weight:700;color:var(--ink-900);letter-spacing:.4px;
 display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.panel-head span{font-size:12px;font-weight:600;color:var(--text-soft);letter-spacing:.6px;}
.value-row{
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:13px 24px;border-bottom:1px dashed var(--line);font-size:14.5px;
}
.value-row:last-child{border-bottom:0;}
.value-row b{color:var(--ink-900);font-weight:700;letter-spacing:.4px;}
.value-row em{font-style:normal;color:var(--text-soft);}
.value-row .em-accent{color:var(--accent-deep);font-weight:700;}

/* ================= rule cards ================= */
.rule-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;height:100%;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rule-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.rule-head{
 padding:18px 22px;border-bottom:1px solid var(--line);
 display:flex;align-items:center;gap:10px;background:var(--paper);
}
.rule-head strong{font-size:15.5px;font-weight:800;color:var(--ink-900);letter-spacing:.4px;}
.badge-x{
 font-size:11.5px;font-weight:700;letter-spacing:.6px;
 padding:3px 10px;border-radius:999px;background:var(--accent);color:#fff;
}
.badge-x--mint{background:var(--mint);}
.rule-body{padding:8px 22px 20px;}
.rule-line{
 display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
 font-size:14.3px;line-height:1.75;color:var(--text-soft);
}
.rule-line:last-child{border-bottom:0;}
.rule-line b{
 flex-shrink:0;min-width:62px;color:var(--ink-900);font-weight:800;font-size:13.5px;letter-spacing:.3px;
}
.rule-note{
 margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);
 background:var(--accent-soft);color:var(--accent-deep);
 font-size:13.5px;font-weight:600;line-height:1.7;
}

/* ================= dark section list ================= */
.odds-card{
 background:rgba(255,255,255,.04);border:1px solid var(--line-dark);border-radius:var(--radius);
 padding:22px;height:100%;
 transition:transform var(--ease),background var(--ease),border-color var(--ease);
}
.odds-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.22);}
.odds-card h3{font-size:16px;font-weight:700;color:#fff;letter-spacing:.4px;}
.odds-num{font-size:26px;font-weight:800;color:#8fb2ff;letter-spacing:.6px;margin-top:12px;line-height:1.2;}
.odds-card p{margin-top:10px;font-size:13.8px;line-height:1.8;color:var(--text-invert-soft);}
.dark-note{
 margin-top:26px;padding:18px 22px;border-radius:var(--radius);
 border:1px solid var(--line-dark);background:rgba(255,255,255,.03);
 font-size:14px;line-height:1.8;color:var(--text-invert-soft);
}
.dark-note strong{color:#fff;}

/* ================= myths ================= */
.myth-card{
 background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
 border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-sm);height:100%;
 transition:transform var(--ease),box-shadow var(--ease);
}
.myth-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.myth-say{font-size:14px;font-weight:700;color:var(--ink-900);line-height:1.7;}
.myth-say span{color:var(--accent-deep);}
.myth-real{margin-top:12px;font-size:14.3px;line-height:1.82;color:var(--text-soft);}

/* ================= flow ================= */
.flow-list{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;}
.flow-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px;box-shadow:var(--shadow-sm);height:100%;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.flow-num{
 width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
 background:var(--ink-900);color:#fff;font-size:13.5px;font-weight:800;margin-bottom:14px;
}
.flow-item h3{font-size:15px;font-weight:700;color:var(--ink-900);line-height:1.5;}
.flow-item p{margin-top:8px;font-size:13.6px;line-height:1.78;color:var(--text-soft);}

/* ================= faq ================= */
.faq .accordion-item{
 border:1px solid var(--line);border-radius:var(--radius);background:#fff;
 margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.faq .accordion-item:hover{border-color:var(--line-strong);}
.faq .accordion-button{
 font-weight:700;font-size:15.5px;color:var(--ink-900);background:#fff;
 padding:18px 22px;box-shadow:none;line-height:1.6;
}
.faq .accordion-button:not(.collapsed){background:var(--accent-soft);color:var(--accent-deep);}
.faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(47,109,246,.18);border-color:transparent;}
.faq .accordion-body{
 font-size:14.4px;line-height:1.85;color:var(--text-soft);
 padding:4px 22px 20px;
}
.faq .accordion-body strong{color:var(--ink-900);}

/* ================= cta / subscribe ================= */
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--radius-lg);
 border:1px solid var(--line-strong);
 background:
 radial-gradient(560px 260px at 8% 0%, #e6eeff 0%, rgba(230,238,255,0) 64%),
 radial-gradient(520px 240px at 92% 100%, #e3f8f4 0%, rgba(227,248,244,0) 62%),
 #ffffff;
 box-shadow:var(--shadow-md);
 padding:44px 46px;
 display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;
}
.cta-band h2{font-size:clamp(21px,2.3vw,27px);font-weight:800;line-height:1.42;color:var(--ink-900);letter-spacing:.2px;}
.cta-band p{margin-top:12px;font-size:14.6px;line-height:1.85;color:var(--text-soft);}
.subscribe-form{display:flex;gap:10px;flex-wrap:wrap;}
.subscribe-form input[type="email"]{
 flex:1 1 200px;min-width:0;height:46px;padding:0 16px;
 border:1px solid var(--line-strong);border-radius:9px;background:#fff;
 font-size:14.5px;color:var(--text);transition:border-color var(--ease),box-shadow var(--ease);
}
.subscribe-form input[type="email"]::placeholder{color:#9aa8bd;}
.subscribe-form input[type="email"]:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,109,246,.16);}
.form-hint{margin-top:10px;font-size:12.5px;color:var(--text-soft);line-height:1.7;}

/* ================= footer ================= */
.site-footer{background:var(--ink-900);color:var(--text-invert);padding:56px 0 0;margin-top:0;}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;
 padding-bottom:40px;border-bottom:1px solid var(--line-dark);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{font-size:16.5px;font-weight:800;letter-spacing:.4px;color:#fff;}
.footer-about{font-size:14px;line-height:1.85;color:var(--text-invert-soft);max-width:420px;}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:1.6px;color:#fff;margin-bottom:16px;text-transform:uppercase;}
.footer-col a{
 display:block;font-size:14px;color:var(--text-invert-soft);
 padding:6px 0;transition:color var(--ease),transform var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(3px);}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
 padding:22px 0 26px;font-size:13px;color:#8b9cb6;
}
.footer-bottom a{color:#a9bad3;border-bottom:1px solid rgba(169,186,211,.28);padding-bottom:1px;}
.footer-bottom a:hover{color:#fff;border-bottom-color:#fff;}

/* ================= responsive ================= */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:36px;}
 .hero-soft-inner{padding:52px 0 54px;}
 .hero-float{position:static;margin-top:18px;min-width:0;}
 .split{grid-template-columns:1fr;gap:30px;}
 .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
 .flow-list{grid-template-columns:repeat(2,minmax(0,1fr));}
 .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
 .stat-item:nth-child(2){border-right:0;}
 .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
 .cta-band{grid-template-columns:1fr;padding:36px 30px;}
 .main-nav{
  position:absolute;top:calc(100% + 1px);left:0;right:0;
  display:none;flex-direction:column;align-items:stretch;gap:4px;
  background:#fff;border:1px solid var(--line);border-top:0;
  border-radius:0 0 var(--radius) var(--radius);
  padding:12px 16px 16px;margin-left:0;
  box-shadow:0 18px 36px rgba(16,28,48,.12);
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:11px 14px;font-size:15px;min-height:44px;display:flex;align-items:center;}
 .nav-toggle{display:flex;}
 .header-actions .btn-x{display:none;}
}
@media (max-width:768px){
 .section{padding:54px 0;}
 .section--tight{padding:42px 0;}
 .grid--3,.grid--4{grid-template-columns:1fr;}
 .grid--2{grid-template-columns:1fr;}
 .sec-head{margin-bottom:28px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
 .footer-col:first-child{grid-column:1 / -1;}
 .hero-title{font-size:clamp(25px,6.4vw,34px);}
 .brand-text em{display:none;}
}
@media (max-width:520px){
 .wrap{padding:0 16px;}
 .header-inner{gap:12px;}
 .brand-text strong{font-size:15.5px;}
 .hero-soft-inner{padding:38px 0 44px;}
 .hero-actions .btn-x{width:100%;}
 .hero-points li{font-size:12.2px;padding:6px 12px;}
 .stat-strip{grid-template-columns:1fr;}
 .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:18px 20px;}
 .stat-item:last-child{border-bottom:0;}
 .flow-list{grid-template-columns:1fr;}
 .card-x,.rule-card,.myth-card{padding:20px;}
 .rule-body{padding:6px 18px 18px;}
 .cta-band{padding:28px 20px;}
 .footer-grid{grid-template-columns:1fr;}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
 .value-row,.panel-head{padding-left:18px;padding-right:18px;}
 .rule-line b{min-width:56px;}
}

/* roulang page: category3 */
:root{
 --ink-900:#0b1220;
 --ink-800:#111a2b;
 --ink-700:#1b2740;
 --paper:#f7f9fc;
 --paper-2:#eef2f8;
 --white:#ffffff;
 --text:#16202f;
 --text-soft:#5d6d85;
 --text-invert:#e8eefa;
 --text-invert-soft:#9fb0c9;
 --accent:#2f6df6;
 --accent-deep:#1f52c9;
 --accent-soft:#e7efff;
 --mint:#12b8a0;
 --line:#e2e8f2;
 --line-strong:#cfdcf5;
 --line-dark:rgba(255,255,255,.10);
 --radius-sm:8px;
 --radius:12px;
 --radius-lg:18px;
 --shadow-sm:0 1px 2px rgba(16,28,48,.05),0 4px 14px rgba(16,28,48,.05);
 --shadow-md:0 10px 28px rgba(16,28,48,.10);
 --shadow-lg:0 20px 54px rgba(16,28,48,.16);
 --ease:.22s cubic-bezier(.4,0,.2,1);
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--font);
 font-size:15px;
 line-height:1.78;
 color:var(--text);
 background:var(--paper);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease);}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}
/* ===== header ===== */
.site-header{
 position:sticky;top:0;z-index:200;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,28,48,.09);}
.header-inner{display:flex;align-items:center;gap:26px;height:64px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 background:linear-gradient(135deg,var(--accent),#5f8dff);
 color:#fff;display:grid;place-items:center;
 font-weight:800;font-size:16px;
 box-shadow:0 6px 16px rgba(47,109,246,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--text-soft);letter-spacing:1.2px;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 position:relative;padding:8px 13px;border-radius:9px;
 font-size:14.5px;font-weight:500;color:var(--text-soft);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:var(--paper-2);}
.nav-link.active{color:var(--accent);font-weight:700;background:var(--accent-soft);}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 background:#fff;border-radius:10px;padding:0;cursor:pointer;
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
/* ===== buttons ===== */
.btn-x{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;letter-spacing:.2px;cursor:pointer;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-x--primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(47,109,246,.28);}
.btn-x--primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(47,109,246,.34);}
.btn-x--ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff;}
.btn-x--ghost:hover{background:rgba(255,255,255,.17);color:#fff;transform:translateY(-2px);}
.btn-x--outline{background:#fff;border-color:var(--line-strong);color:var(--text);}
.btn-x--outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-x--sm{padding:8px 16px;font-size:13.5px;border-radius:8px;}
/* ===== hero ===== */
.hero{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;isolation:isolate;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;transform:scale(1.05);}
.hero-veil{
 position:absolute;inset:0;
 background:radial-gradient(115% 95% at 12% 18%,rgba(11,18,32,.45),rgba(11,18,32,.94) 64%),
 linear-gradient(180deg,rgba(11,18,32,.88),rgba(11,18,32,.99));
}
.hero-inner{position:relative;z-index:2;padding:64px 0 78px;}
.hero-stack{display:grid;grid-template-columns:1.38fr .82fr;gap:26px;align-items:start;}
.hero-main{
 background:rgba(17,26,43,.74);
 border:1px solid rgba(126,166,255,.22);
 border-radius:var(--radius-lg);
 padding:36px 34px;
 box-shadow:var(--shadow-lg);
 backdrop-filter:blur(7px);
}
.hero-eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:2.2px;font-weight:700;color:#7ea6ff;
 padding:7px 14px;border-radius:999px;border:1px solid rgba(126,166,255,.34);
 background:rgba(47,109,246,.14);
}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:#7ea6ff;box-shadow:0 0 0 4px rgba(126,166,255,.16);}
.hero h1{
 margin:20px 0 0;
 font-size:clamp(27px,3.4vw,40px);
 line-height:1.28;font-weight:800;letter-spacing:.3px;color:#fff;
 text-shadow:0 2px 24px rgba(0,0,0,.30);
}
.hero-sub{margin-top:18px;font-size:15px;line-height:1.86;color:rgba(232,238,250,.82);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px;}
.hero-tags li{
 font-size:12.5px;padding:6px 13px;border-radius:999px;
 color:#c8d6ef;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
}
.hero-side{display:flex;flex-direction:column;gap:18px;}
.side-card{
 background:rgba(255,255,255,.06);
 border:1px solid rgba(255,255,255,.14);
 border-radius:var(--radius);
 padding:20px 22px;
 backdrop-filter:blur(7px);
 transition:transform var(--ease),border-color var(--ease),background var(--ease);
}
.side-card:hover{background:rgba(255,255,255,.10);border-color:rgba(126,166,255,.46);}
.side-card--a{transform:translateX(16px);}
.side-card--b{transform:translateX(-12px);}
.side-card__kicker{font-size:11.5px;letter-spacing:1.8px;font-weight:700;color:#7ea6ff;text-transform:uppercase;}
.side-card h2{margin:10px 0 8px;font-size:16.5px;font-weight:700;color:#fff;line-height:1.5;}
.side-card p{font-size:13.5px;line-height:1.75;color:var(--text-invert-soft);}
.side-params{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.side-params span{
 font-size:12.5px;padding:4px 10px;border-radius:7px;
 background:rgba(47,109,246,.18);border:1px solid rgba(126,166,255,.28);color:#cfdcf5;
}
.score-row{display:flex;align-items:center;gap:10px;margin-top:12px;}
.score-row b{font-size:13px;color:#cfdcf5;font-weight:600;min-width:74px;}
.score-bar{flex:1;height:6px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden;}
.score-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#2f6df6,#6ea1ff);}
.score-row em{font-style:normal;font-size:12.5px;color:#9fb0c9;min-width:30px;text-align:right;}
/* ===== section base ===== */
.section{padding:72px 0;}
.section--tight{padding:50px 0;}
.section--paper{background:var(--paper-2);}
.section--dark{background:var(--ink-900);color:var(--text-invert);}
.sec-head{max-width:760px;margin-bottom:34px;}
.sec-kicker{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12px;font-weight:700;letter-spacing:2px;color:var(--accent);
 margin-bottom:12px;
}
.sec-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent);}
.section--dark .sec-kicker{color:#7ea6ff;}
.section--dark .sec-kicker::before{background:#7ea6ff;}
.sec-head h2{
 margin:0 0 12px;
 font-size:clamp(22px,2.5vw,30px);
 font-weight:800;line-height:1.36;letter-spacing:.2px;
}
.sec-head p{font-size:15px;line-height:1.82;color:var(--text-soft);}
.section--dark .sec-head p{color:var(--text-invert-soft);}
/* ===== cards ===== */
.c-card{
 background:var(--white);
 border:1px solid var(--line);
 border-radius:var(--radius);
 padding:24px 22px;
 box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
 height:100%;
}
.c-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.c-card h3{margin:0 0 10px;font-size:16.5px;font-weight:700;line-height:1.5;}
.c-card p{font-size:14px;line-height:1.8;color:var(--text-soft);}
.c-icon{
 width:38px;height:38px;border-radius:10px;
 background:var(--accent-soft);color:var(--accent);
 display:grid;place-items:center;margin-bottom:14px;
 font-weight:800;font-size:14px;
}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.tag-line{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px;}
.tag-line span{
 font-size:12px;padding:3px 10px;border-radius:999px;
 background:var(--paper-2);color:var(--text-soft);border:1px solid var(--line);
}
/* ===== pain cards ===== */
.pain-card{position:relative;padding-top:26px;}
.pain-card::before{
 content:"";position:absolute;left:22px;top:22px;width:26px;height:3px;border-radius:2px;background:#e2574c;
}
.pain-card h3{margin-top:14px;}
/* ===== dims ===== */
.dim-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.dim-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.dim-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.dim-card h3{margin:0 0 8px;font-size:16px;font-weight:700;}
.dim-card p{font-size:13.8px;line-height:1.78;color:var(--text-soft);margin-bottom:14px;}
.weight{display:flex;align-items:center;gap:10px;}
.weight span{font-size:12.5px;color:var(--text-soft);min-width:56px;}
.weight-bar{flex:1;height:6px;border-radius:999px;background:var(--paper-2);overflow:hidden;}
.weight-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),#6ea1ff);}
.weight b{font-size:12.5px;color:var(--accent);font-weight:700;}
/* ===== steps ===== */
.step-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;counter-reset:step;}
.step-item{
 display:flex;gap:16px;align-items:flex-start;
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 22px;box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.step-num{
 flex:0 0 38px;width:38px;height:38px;border-radius:10px;
 background:var(--ink-800);color:#fff;display:grid;place-items:center;
 font-weight:800;font-size:14px;letter-spacing:.5px;
}
.step-item h3{margin:2px 0 6px;font-size:15.5px;font-weight:700;}
.step-item p{font-size:13.8px;line-height:1.78;color:var(--text-soft);}
/* ===== version compare ===== */
.ver-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.ver-card{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 display:flex;flex-direction:column;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.ver-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.ver-card__badge{
 align-self:flex-start;font-size:11.5px;font-weight:700;letter-spacing:1px;
 padding:4px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent);
}
.ver-card h3{margin:14px 0 8px;font-size:17px;font-weight:800;}
.ver-card p.ver-desc{font-size:13.8px;line-height:1.78;color:var(--text-soft);margin-bottom:16px;}
.ver-specs{display:grid;gap:8px;margin-bottom:16px;}
.ver-specs div{display:flex;justify-content:space-between;gap:8px;font-size:13px;padding-bottom:7px;border-bottom:1px dashed var(--line);}
.ver-specs dt{color:var(--text-soft);}
.ver-specs dd{margin:0;font-weight:700;color:var(--text);}
.ver-cost{margin-top:auto;}
.ver-cost__head{display:flex;justify-content:space-between;font-size:12.5px;color:var(--text-soft);margin-bottom:6px;}
.ver-cost__head b{color:var(--accent);}
/* ===== quotes ===== */
.quote-card{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);height:100%;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.quote-card p{font-size:14.2px;line-height:1.85;color:var(--text);}
.quote-who{display:flex;align-items:center;gap:10px;margin-top:16px;}
.quote-who span{
 width:32px;height:32px;border-radius:50%;
 background:var(--paper-2);color:var(--accent);
 display:grid;place-items:center;font-size:12.5px;font-weight:800;
}
.quote-who b{font-size:13px;font-weight:700;display:block;line-height:1.4;}
.quote-who em{font-style:normal;font-size:12px;color:var(--text-soft);}
/* ===== fit ===== */
.fit-card{border-left:3px solid var(--accent);}
.fit-card h3{font-size:15.5px;}
/* ===== news ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.news-card{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-sm);position:relative;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;background:var(--accent-soft);}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.news-card:hover::before{background:var(--accent);}
.news-card h3{margin:0 0 10px;font-size:15.5px;font-weight:700;line-height:1.55;}
.news-card h3 a:hover{color:var(--accent);}
.news-card p{font-size:13.8px;line-height:1.78;color:var(--text-soft);}
.news-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;font-size:12.5px;color:var(--text-soft);}
.empty-note{
 padding:26px;border:1px dashed var(--line-strong);border-radius:var(--radius);
 background:var(--white);color:var(--text-soft);font-size:14px;text-align:center;
}
/* ===== metrics ===== */
.metric-strip{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
 background:var(--ink-800);border-radius:var(--radius-lg);
 overflow:hidden;border:1px solid var(--line-dark);
}
.metric-cell{padding:26px 22px;border-right:1px solid var(--line-dark);}
.metric-cell:last-child{border-right:0;}
.metric-cell strong{display:block;font-size:28px;font-weight:800;color:#fff;letter-spacing:.5px;line-height:1.2;}
.metric-cell span{display:block;margin-top:8px;font-size:13px;color:var(--text-invert-soft);line-height:1.6;}
/* ===== subscribe ===== */
.subscribe-band{
 background:linear-gradient(135deg,var(--ink-800),var(--ink-900));
 border-radius:var(--radius-lg);
 padding:38px 34px;
 display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;
 border:1px solid var(--line-dark);
}
.subscribe-band h2{margin:0 0 12px;font-size:24px;font-weight:800;color:#fff;line-height:1.4;}
.subscribe-band p{font-size:14px;line-height:1.82;color:var(--text-invert-soft);}
.sub-form{display:flex;flex-wrap:wrap;gap:10px;}
.sub-form input[type="email"]{
 flex:1 1 200px;min-height:46px;padding:12px 14px;
 border-radius:9px;border:1px solid rgba(255,255,255,.20);
 background:rgba(255,255,255,.07);color:#fff;font-size:14px;
}
.sub-form input[type="email"]::placeholder{color:#8fa3c1;}
.sub-form input[type="email"]:focus{background:rgba(255,255,255,.12);border-color:rgba(126,166,255,.6);outline:none;}
.sub-form button{min-height:46px;}
.sub-note{margin-top:12px;font-size:12.5px;color:#8fa3c1;}
.form-msg{margin-top:12px;font-size:13px;color:#7fe0cd;min-height:18px;}
/* ===== footer ===== */
.site-footer{background:var(--ink-900);color:var(--text-invert-soft);padding:56px 0 26px;border-top:1px solid var(--line-dark);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16.5px;font-weight:800;color:#fff;}
.footer-about{font-size:13.5px;line-height:1.85;color:var(--text-invert-soft);max-width:400px;}
.footer-col h4{margin:0 0 14px;font-size:14px;font-weight:700;color:#fff;letter-spacing:.5px;}
.footer-col a{display:block;font-size:13.5px;color:var(--text-invert-soft);padding:5px 0;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
 margin-top:36px;padding-top:18px;border-top:1px solid var(--line-dark);
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
 font-size:12.5px;color:#7d8ea8;
}
.footer-bottom a{color:#9fb0c9;}
.footer-bottom a:hover{color:#fff;}
/* ===== responsive ===== */
@media(max-width:1024px){
 .hero-stack{grid-template-columns:1fr;}
 .side-card--a,.side-card--b{transform:none;}
 .hero-side{flex-direction:row;}
 .hero-side .side-card{flex:1;}
 .ver-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .dim-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
 .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .subscribe-band{grid-template-columns:1fr;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
 .footer-col:first-child{grid-column:1 / -1;}
}
@media(max-width:992px){
 .nav-toggle{display:flex;}
 .main-nav{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:2px;
  background:#fff;border-bottom:1px solid var(--line);
  padding:10px 16px 16px;margin-left:0;
  box-shadow:0 18px 34px rgba(16,28,48,.12);
  display:none;
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:12px 14px;font-size:15px;}
 .header-actions{margin-left:auto;}
}
@media(max-width:768px){
 .hero-inner{padding:44px 0 56px;}
 .hero-main{padding:26px 22px;}
 .hero-side{flex-direction:column;}
 .section{padding:52px 0;}
 .section--tight{padding:40px 0;}
 .grid-2,.grid-3,.grid-4,.dim-grid,.ver-grid,.news-grid,.step-list{grid-template-columns:1fr;}
 .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
 .metric-cell{border-right:0;border-bottom:1px solid var(--line-dark);}
 .metric-cell:nth-child(2n){border-right:0;}
 .metric-cell:nth-last-child(-n+2){border-bottom:0;}
 .subscribe-band{padding:28px 22px;}
 .footer-grid{grid-template-columns:1fr;}
}
@media(max-width:520px){
 .header-inner{gap:14px;}
 .brand-text em{display:none;}
 .btn-x{padding:11px 18px;font-size:14px;}
 .hero-actions .btn-x{width:100%;}
 .metric-strip{grid-template-columns:1fr;}
 .metric-cell{border-bottom:1px solid var(--line-dark);}
 .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
 --ink-900:#0b1220;
 --ink-800:#111a2b;
 --ink-700:#1b2740;
 --paper:#f7f9fc;
 --paper-2:#eef2f8;
 --white:#ffffff;
 --text:#16202f;
 --text-soft:#5d6d85;
 --text-invert:#e8eefa;
 --text-invert-soft:#9fb0c9;
 --accent:#2f6df6;
 --accent-deep:#1f52c9;
 --accent-soft:#e7efff;
 --mint:#12b8a0;
 --line:#e2e8f2;
 --line-strong:#cfdcf5;
 --line-dark:rgba(255,255,255,.10);
 --radius-sm:8px;
 --radius:12px;
 --radius-lg:18px;
 --shadow-sm:0 1px 2px rgba(16,28,48,.05),0 4px 14px rgba(16,28,48,.05);
 --shadow-md:0 10px 28px rgba(16,28,48,.10);
 --shadow-lg:0 20px 54px rgba(16,28,48,.16);
 --ease:.22s cubic-bezier(.4,0,.2,1);
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--font);
 font-size:15px;
 line-height:1.78;
 color:var(--text);
 background:var(--paper);
 -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}
/* ===== header ===== */
.site-header{
 position:sticky;top:0;z-index:200;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,28,48,.09);}
.header-inner{display:flex;align-items:center;gap:26px;height:64px;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 background:linear-gradient(135deg,var(--accent),#5f8dff);
 color:#fff;display:grid;place-items:center;
 font-weight:800;font-size:16px;letter-spacing:0;
 box-shadow:0 6px 16px rgba(47,109,246,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--text-soft);letter-spacing:1.2px;margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 position:relative;padding:8px 13px;border-radius:9px;
 font-size:14.5px;font-weight:500;color:var(--text-soft);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:var(--paper-2);}
.nav-link.active{color:var(--accent);font-weight:700;background:var(--accent-soft);}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 background:#fff;border-radius:10px;padding:0;cursor:pointer;
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
/* ===== buttons ===== */
.btn-x{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;letter-spacing:.2px;cursor:pointer;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-x--primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(47,109,246,.28);}
.btn-x--primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(47,109,246,.34);}
.btn-x--ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff;}
.btn-x--ghost:hover{background:rgba(255,255,255,.17);color:#fff;transform:translateY(-2px);}
.btn-x--outline{background:#fff;border-color:var(--line-strong);color:var(--text);}
.btn-x--outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-x--sm{padding:8px 16px;font-size:13.5px;border-radius:8px;}
/* ===== hero ===== */
.page-hero{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;isolation:isolate;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.38;transform:scale(1.05);}
.hero-veil{
 position:absolute;inset:0;
 background:radial-gradient(115% 95% at 10% 12%,rgba(11,18,32,.42),rgba(11,18,32,.94) 66%),
 linear-gradient(180deg,rgba(11,18,32,.88),rgba(11,18,32,.99));
}
.page-hero-inner{position:relative;z-index:2;padding-top:72px;}
.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:46px;align-items:start;padding-bottom:54px;}
.hero-eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:2.4px;font-weight:700;color:#7ea6ff;
 padding:7px 14px;border-radius:999px;border:1px solid rgba(126,166,255,.34);
 background:rgba(47,109,246,.14);
}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:#7ea6ff;box-shadow:0 0 0 4px rgba(126,166,255,.16);}
.hero-copy h1{
 margin-top:22px;
 font-size:clamp(28px,3.7vw,42px);
 line-height:1.28;font-weight:800;letter-spacing:.4px;
 color:#fff;text-shadow:0 2px 24px rgba(0,0,0,.30);
}
.hero-sub{margin-top:18px;max-width:660px;font-size:15.5px;line-height:1.86;color:rgba(232,238,250,.80);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px;}
.hero-tags li{
 font-size:13px;padding:6px 14px;border-radius:999px;
 color:#c8d6ef;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
}
.hero-panel{
 background:rgba(255,255,255,.07);
 border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-lg);
 padding:24px 24px 18px;
 backdrop-filter:blur(10px);
 box-shadow:0 24px 60px rgba(0,0,0,.28);
}
.hero-panel h2{font-size:14px;font-weight:700;letter-spacing:2px;color:#7ea6ff;}
.panel-list{margin-top:6px;}
.panel-list li{
 display:flex;gap:11px;align-items:flex-start;
 padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.13);
 font-size:13.8px;line-height:1.7;color:#c8d6ef;
}
.panel-list li:last-child{border-bottom:0;}
.panel-dot{width:7px;height:7px;flex:0 0 7px;margin-top:9px;border-radius:50%;background:#5f8dff;box-shadow:0 0 0 4px rgba(95,141,255,.14);}
/* countdown */
.countdown-bar{
 position:relative;z-index:2;
 background:rgba(255,255,255,.05);
 border-top:1px solid rgba(255,255,255,.13);
}
.countdown-inner{display:flex;align-items:center;flex-wrap:wrap;gap:18px;padding:15px 22px;}
.cd-label{font-size:12.5px;letter-spacing:1.8px;font-weight:700;color:#9fb0c9;}
.cd-timer{display:flex;gap:9px;margin-right:auto;}
.cd-cell{
 min-width:62px;padding:6px 10px;border-radius:10px;text-align:center;
 background:rgba(47,109,246,.16);border:1px solid rgba(126,166,255,.28);
}
.cd-cell b{display:block;font-size:17px;font-weight:800;color:#fff;line-height:1.25;font-variant-numeric:tabular-nums;}
.cd-cell i{font-style:normal;font-size:11px;color:#9fb0c9;letter-spacing:1px;}
/* ===== stat strip ===== */
.stat-strip{background:var(--paper-2);border-bottom:1px solid var(--line);padding:34px 0;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;}
.stat{padding:22px 24px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat b{display:block;font-size:27px;font-weight:800;color:var(--accent);letter-spacing:-.4px;line-height:1.2;}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-soft);}
/* ===== section ===== */
.section{padding:76px 0;}
.section--tight{padding:56px 0;}
.section--paper{background:var(--paper-2);}
.section--dark{background:var(--ink-900);color:var(--text-invert);}
.section-head{max-width:780px;margin-bottom:36px;}
.section-kicker{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12px;font-weight:700;letter-spacing:2px;
 color:var(--accent);background:var(--accent-soft);
 padding:5px 12px;border-radius:999px;border:1px solid var(--line-strong);
}
.section-kicker::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--accent);}
.section-title{margin-top:16px;font-size:clamp(21px,2.5vw,29px);font-weight:800;line-height:1.4;letter-spacing:.2px;color:var(--text);}
.section-desc{margin-top:12px;font-size:14.8px;line-height:1.85;color:var(--text-soft);}
.section--dark .section-title{color:#fff;}
.section--dark .section-desc{color:var(--text-invert-soft);}
.section--dark .section-kicker{color:#7ea6ff;background:rgba(47,109,246,.14);border-color:rgba(126,166,255,.3);}
.section--dark .section-kicker::before{background:#7ea6ff;}
/* ===== grids & cards ===== */
.grid{display:grid;gap:18px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:24px 22px;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.card-icon{
 width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
 background:var(--accent-soft);color:var(--accent);margin-bottom:16px;
}
.card-icon svg{width:20px;height:20px;}
.card h3{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.2px;}
.card p{margin-top:10px;font-size:14px;line-height:1.82;color:var(--text-soft);}
.card-tag{
 display:inline-block;margin-top:16px;font-size:12px;
 padding:3px 10px;border-radius:999px;
 color:var(--accent);background:var(--accent-soft);border:1px solid var(--line-strong);
}
/* ===== steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 22px 24px;box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.step-num{
 display:inline-block;font-size:12px;font-weight:800;letter-spacing:2.4px;
 color:var(--accent);margin-bottom:12px;
}
.step h3{font-size:16px;font-weight:700;}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-soft);}
.step::after{
 content:"";position:absolute;left:22px;bottom:0;width:38px;height:3px;
 background:var(--accent);border-radius:3px 3px 0 0;opacity:.7;
}
/* ===== scene cards ===== */
.scene-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.scene-body{padding:20px 22px 24px;}
.scene-body h3{font-size:16px;font-weight:700;}
.scene-body p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-soft);}
/* ===== metrics (dark) ===== */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:34px;}
.metric{
 background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
 border-radius:var(--radius);padding:20px 20px 18px;
 transition:transform var(--ease),background var(--ease),border-color var(--ease);
}
.metric:hover{transform:translateY(-3px);background:rgba(255,255,255,.08);border-color:rgba(126,166,255,.34);}
.metric b{display:block;font-size:25px;font-weight:800;color:#fff;line-height:1.25;letter-spacing:-.3px;}
.metric span{display:block;margin-top:6px;font-size:12.5px;color:#9fb0c9;}
.bar-panel{
 background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.11);
 border-radius:var(--radius-lg);padding:26px 26px 18px;
}
.bar-panel h3{font-size:15.5px;font-weight:700;color:#fff;}
.bar-panel .bar-note{margin-top:6px;font-size:12.8px;color:#9fb0c9;}
.bar-row{display:grid;grid-template-columns:150px 1fr 60px;gap:14px;align-items:center;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.10);}
.bar-row:last-child{border-bottom:0;}
.bar-name{font-size:13.5px;color:#c8d6ef;}
.bar-track{height:8px;border-radius:999px;background:rgba(255,255,255,.10);overflow:hidden;}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),#5f8dff);}
.bar-val{font-size:13px;font-weight:700;color:#fff;text-align:right;font-variant-numeric:tabular-nums;}
/* ===== myths ===== */
.myth-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.myth-item{
 display:flex;gap:14px;align-items:flex-start;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 22px;box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.myth-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.myth-mark{
 width:32px;height:32px;flex:0 0 32px;border-radius:9px;
 display:grid;place-items:center;background:#fdf1ed;color:#b4523f;
}
.myth-mark svg{width:16px;height:16px;}
.myth-item h3{font-size:15px;font-weight:700;line-height:1.6;}
.myth-item p{margin-top:8px;font-size:13.8px;line-height:1.8;color:var(--text-soft);}
/* ===== topic links ===== */
.topic-card{
 display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--accent);}
.topic-card h3{font-size:16px;font-weight:700;}
.topic-card p{margin-top:9px;font-size:13.8px;line-height:1.8;color:var(--text-soft);}
.topic-more{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--accent);}
.topic-more svg{width:14px;height:14px;}
/* ===== news ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.news-card{
 display:flex;flex-direction:column;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-sm);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.news-tag{font-size:12px;font-weight:700;color:var(--accent);background:var(--accent-soft);border:1px solid var(--line-strong);border-radius:999px;padding:3px 10px;align-self:flex-start;}
.news-title{margin-top:14px;font-size:15.5px;font-weight:700;line-height:1.62;}
.news-excerpt{margin-top:10px;font-size:13.6px;line-height:1.8;color:var(--text-soft);flex:1;}
.news-meta{margin-top:16px;font-size:12.5px;color:#8595ab;}
.news-empty{
 grid-column:1/-1;padding:34px;text-align:center;
 border:1px dashed var(--line-strong);border-radius:var(--radius);
 background:#fff;color:var(--text-soft);font-size:14px;
}
/* ===== cta ===== */
.cta-section{position:relative;overflow:hidden;}
.cta-section::before{
 content:"";position:absolute;inset:0;
 background:radial-gradient(90% 120% at 82% 8%,rgba(47,109,246,.26),transparent 62%);
 pointer-events:none;
}
.cta-panel{
 position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;
 background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
 border-radius:var(--radius-lg);padding:38px 38px;
}
.cta-panel h2{font-size:clamp(20px,2.2vw,26px);font-weight:800;color:#fff;line-height:1.42;margin-top:14px;}
.cta-panel p{margin-top:12px;font-size:14.2px;line-height:1.85;color:var(--text-invert-soft);}
.cta-form{display:flex;gap:10px;flex-wrap:wrap;}
.cta-form input{
 flex:1 1 200px;min-height:46px;padding:0 16px;
 border-radius:9px;border:1px solid rgba(255,255,255,.22);
 background:rgba(255,255,255,.08);color:#fff;font-size:14px;
 transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.cta-form input::placeholder{color:#8fa2bd;}
.cta-form input:focus{outline:none;border-color:#7ea6ff;background:rgba(255,255,255,.14);box-shadow:0 0 0 3px rgba(126,166,255,.18);}
.notice-line{
 position:relative;margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
 font-size:12.8px;line-height:1.8;color:#8fa2bd;
}
/* ===== footer ===== */
.site-footer{background:var(--ink-900);color:var(--text-invert-soft);padding:56px 0 26px;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16.5px;font-weight:800;color:#fff;letter-spacing:.4px;}
.footer-about{font-size:13.5px;line-height:1.85;color:var(--text-invert-soft);max-width:420px;}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:1.6px;color:#fff;margin-bottom:14px;}
.footer-col a{display:block;padding:6px 0;font-size:13.5px;color:var(--text-invert-soft);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
 display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
 font-size:12.6px;color:#8fa2bd;
}
.footer-bottom a{color:#8fa2bd;}
.footer-bottom a:hover{color:#fff;}
/* ===== responsive ===== */
@media (max-width:1080px){
 .hero-grid{grid-template-columns:1fr;gap:34px;}
 .hero-panel{max-width:560px;}
 .grid-4{grid-template-columns:repeat(2,1fr);}
 .steps{grid-template-columns:repeat(2,1fr);}
 .metric-grid{grid-template-columns:repeat(2,1fr);}
 .news-grid{grid-template-columns:repeat(2,1fr);}
 .cta-panel{grid-template-columns:1fr;gap:24px;padding:32px 28px;}
 .stat-grid{grid-template-columns:repeat(2,1fr);}
 .stat:nth-child(2){border-right:0;}
 .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
 .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
 .main-nav{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:2px;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 16px 34px rgba(16,28,48,.12);
  padding:12px 16px 18px;margin-left:0;
  display:none;
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:11px 12px;font-size:15px;}
 .nav-toggle{display:flex;}
 .header-actions .btn-x--sm{padding:7px 13px;font-size:13px;}
 .grid-3{grid-template-columns:repeat(2,1fr);}
 .myth-list{grid-template-columns:1fr;}
 .bar-row{grid-template-columns:110px 1fr 54px;}
}
@media (max-width:768px){
 .header-inner{gap:14px;height:60px;}
 .brand-text em{display:none;}
 .section{padding:56px 0;}
 .section--tight{padding:44px 0;}
 .page-hero-inner{padding-top:52px;}
 .hero-actions{gap:10px;}
 .hero-actions .btn-x{flex:1 1 auto;}
 .grid-3,.grid-2{grid-template-columns:1fr;}
 .news-grid{grid-template-columns:1fr;}
 .steps{grid-template-columns:1fr;}
 .cta-panel{padding:26px 20px;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
 .wrap{padding:0 16px;}
 .countdown-inner{gap:12px;padding:14px 16px;}
 .cd-label{width:100%;}
 .cd-timer{gap:7px;}
 .cd-cell{min-width:54px;padding:5px 8px;}
 .metric-grid{grid-template-columns:1fr;}
 .stat-grid{grid-template-columns:1fr;}
 .stat{border-right:0;border-bottom:1px solid var(--line);}
 .stat:last-child{border-bottom:0;}
 .bar-row{grid-template-columns:1fr;gap:6px;padding:12px 0;}
 .bar-val{text-align:left;}
 .hero-tags li{font-size:12.5px;padding:5px 12px;}
 .card,.news-card,.topic-card{padding:20px 18px;}
}

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