/* roulang page: index */
:root{
  --ink:#141917;
  --ink-soft:#4A544F;
  --line:#E2DCD2;
  --paper:#F6F4EF;
  --paper-2:#EFEAE1;
  --deep:#0E3A35;
  --deep-2:#17544C;
  --accent:#E9633F;
  --accent-soft:#F7DBD1;
  --mint:#CFE4DC;
  --muted:#7A837E;
  --white-soft:#F6F4EF;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 1px 2px rgba(20,25,23,.04);
  --shadow-hover:0 18px 40px -24px rgba(14,58,53,.35);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,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:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
img{max-width:100%;display:block;border:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1024px){ .container{padding:0 32px;} }

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  letter-spacing:.01em;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -16px rgba(233,99,63,.9);}
.btn-primary:hover{background:#d9542f;color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1.5px solid currentColor;color:var(--deep);background:transparent;}
.btn-ghost:hover{background:rgba(14,58,53,.06);color:var(--deep);border-color:var(--deep);}
.hero .btn-ghost{color:var(--white-soft);border-color:rgba(246,244,239,.55);}
.hero .btn-ghost:hover{background:rgba(246,244,239,.12);color:#fff;border-color:#fff;}
.btn-light{background:var(--white-soft);color:var(--deep);}
.btn-light:hover{background:#fff;color:var(--deep-2);transform:translateY(-2px);}
.btn-block{width:100%;}

.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1;
  background:var(--accent-soft);
  color:#8A3520;
  white-space:nowrap;
}
.badge-mint{background:var(--mint);color:#144B42;}
.badge-deep{background:rgba(246,244,239,.16);color:#F6F4EF;}

.tagline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:11px;
  letter-spacing:.18em;
  color:var(--muted);
  text-transform:uppercase;
}
.tagline::after{
  content:"";
  width:28px;
  height:1px;
  background:var(--line);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.section-head .head-main{flex:1 1 420px;min-width:0;}
.section-head h2{
  font-size:clamp(1.5rem,2.4vw,2.1rem);
  font-weight:650;
  line-height:1.3;
  letter-spacing:-.01em;
  margin-top:10px;
}
.section-head .head-line{
  flex:1 1 120px;
  height:1px;
  background:var(--line);
  margin-bottom:14px;
}
.section-head .head-more{
  font-size:14px;
  font-weight:600;
  color:var(--deep);
  padding-bottom:12px;
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.section-head .head-more:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,244,239,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--deep);
}
.brand:hover{color:var(--deep);}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--deep);
  color:var(--accent);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text .b1{font-size:17px;font-weight:700;letter-spacing:.04em;}
.brand-text .b2{font-size:11px;color:var(--muted);letter-spacing:.14em;margin-top:3px;}

.nav-panel{display:flex;align-items:center;gap:28px;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-item{position:relative;display:flex;align-items:center;height:72px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:100%;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:20px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav-link:hover::after,.nav-item.is-active .nav-link::after{transform:scaleX(1);}
.nav-item.is-active .nav-link{font-weight:700;color:var(--deep);}
.nav-sub-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:26px;
  height:26px;
  margin-left:-6px;
  border-radius:50%;
  color:var(--muted);
  transition:transform .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.nav-item:hover .nav-sub-toggle,.nav-item:focus-within .nav-sub-toggle{color:var(--accent);}
.nav-item.open .nav-sub-toggle{transform:rotate(180deg);}

.mega{
  position:absolute;
  top:calc(100% - 4px);
  right:-10px;
  width:720px;
  display:grid;
  grid-template-columns:1fr 300px;
  gap:24px;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 28px 60px -36px rgba(14,58,53,.5);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega-list-title{font-size:11px;letter-spacing:.18em;color:var(--muted);margin-bottom:10px;}
.mega-list a{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:10px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--ink-soft);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.mega-list a:hover{background:var(--paper);color:var(--deep);}
.mega-list .idx{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--accent);
  font-weight:700;
  letter-spacing:.04em;
}
.mega-card{
  display:block;
  padding:14px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--paper);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6CFC2;color:inherit;}
.mega-card .thumb{
  border-radius:10px;
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--paper-2);
  margin-bottom:10px;
}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;}
.mega-card strong{display:block;font-size:14px;font-weight:600;color:var(--ink);}
.mega-card span{display:block;font-size:12px;color:var(--muted);margin-top:2px;}
.mega-card .go{font-size:12px;color:var(--accent);font-weight:600;margin-top:8px;}

.nav-cta{padding:11px 22px;font-size:14px;}
.nav-burger{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  align-items:center;
  justify-content:center;
  color:var(--deep);
  background:#fff;
}
.nav-burger span{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:2px;
  position:relative;
}
.nav-burger span::before,.nav-burger span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:2px;
}
.nav-burger span::before{top:-6px;}
.nav-burger span::after{top:6px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:
    radial-gradient(120% 90% at 88% 8%,rgba(23,84,76,.68) 0%,rgba(14,58,53,0) 58%),
    linear-gradient(160deg,#0E3A35 0%,#0B302C 58%,#0E3A35 100%);
  color:var(--white-soft);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.22;
  mix-blend-mode:luminosity;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding:56px 0 64px;
  align-items:center;
}
.hero-copy{max-width:640px;}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 14px;
  border-radius:999px;
  border:1px solid rgba(246,244,239,.22);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(246,244,239,.82);
  margin-bottom:20px;
}
.hero-eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  display:inline-block;
}
.hero h1{
  font-size:clamp(2rem,4.2vw,3.2rem);
  font-weight:700;
  line-height:1.16;
  letter-spacing:-.02em;
  color:#fff;
}
.hero-sub{
  margin-top:20px;
  font-size:16px;
  line-height:1.85;
  color:rgba(246,244,239,.76);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:20px;margin-top:32px;}
.hero-tags li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:rgba(246,244,239,.72);
}
.hero-tags li::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent);
  opacity:.9;
}
.hero-media{position:relative;}
.hero-frame{
  position:relative;
  aspect-ratio:4/3;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--deep-2);
  border:1px solid rgba(246,244,239,.14);
}
.hero-frame img{
  width:100%;height:100%;
  object-fit:cover;
  opacity:.9;
}
.hero-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(14,58,53,.34) 0%,rgba(14,58,53,.72) 100%);
}
.hero-arc{
  position:absolute;
  right:-80px;
  top:-70px;
  width:340px;
  height:340px;
  pointer-events:none;
  opacity:.16;
}
.hero-arc .ring{
  fill:none;
  stroke:#F6F4EF;
  stroke-width:1;
}

/* ---------- 概览条 ---------- */
.overview{
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
}
.overview-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
}
.overview-item{
  padding:28px 0;
  border-top:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:4px;
}
.overview-item:first-child{border-top:0;}
.overview-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:2.2rem;
  font-weight:700;
  line-height:1.1;
  color:var(--deep);
  letter-spacing:-.02em;
}
.overview-num small{font-size:1rem;font-weight:600;color:var(--muted);margin-left:4px;}
.overview-label{font-size:13px;color:var(--ink-soft);}

/* ---------- 板块间距 ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}

/* ---------- 玩法步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  position:relative;
}
.step{
  position:relative;
  padding:0 0 32px 28px;
  border-left:1px solid var(--line);
}
.step:last-child{padding-bottom:0;border-left-color:transparent;}
.step::before{
  content:"";
  position:absolute;
  left:-5px;
  top:6px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--paper);
  border:1.5px solid var(--deep);
}
.step-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:2.2rem;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px var(--mint);
  letter-spacing:-.02em;
  display:block;
  margin-bottom:8px;
}
.step h3{font-size:1rem;font-weight:700;color:var(--ink);margin-bottom:6px;}
.step p{font-size:14px;line-height:1.75;color:var(--ink-soft);}

/* ---------- 奖励预览 ---------- */
.reward-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
.reward-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.reward-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6CFC2;}
.reward-cover{
  position:relative;
  aspect-ratio:16/10;
  background:var(--paper-2);
  overflow:hidden;
}
.reward-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.reward-card:hover .reward-cover img{transform:scale(1.03);}
.reward-cover .badge{position:absolute;left:12px;top:12px;}
.reward-body{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1;}
.reward-body h3{font-size:1.0625rem;font-weight:650;color:var(--ink);}
.reward-body p{font-size:14px;line-height:1.75;color:var(--ink-soft);}
.reward-link{
  margin-top:auto;
  padding-top:8px;
  font-size:13px;
  font-weight:600;
  color:var(--deep);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.reward-link .arrow{transition:transform .2s var(--ease);}
.reward-link:hover{color:var(--accent);}
.reward-link:hover .arrow{transform:translateX(4px);}

.reward-main{
  position:relative;
  background:linear-gradient(150deg,#0E3A35 0%,#123F39 60%,#17544C 100%);
  color:var(--white-soft);
  border:1px solid rgba(14,58,53,.5);
  display:flex;
  flex-direction:column;
}
.reward-main .reward-body{padding:26px;gap:12px;}
.reward-main h3{color:#fff;font-size:1.25rem;font-weight:700;}
.reward-main p{color:rgba(246,244,239,.76);}
.reward-main .reward-link{color:#F6F4EF;}
.reward-main .reward-link:hover{color:var(--accent-soft);}
.reward-main .reward-cover{
  aspect-ratio:16/9;
  border-radius:var(--radius-sm);
  margin:16px 26px 0;
  border:1px solid rgba(246,244,239,.14);
}
.reward-main .reward-cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(14,58,53,.08),rgba(14,58,53,.42));
}

/* ---------- 任务进度块 ---------- */
.progress-section{
  background:var(--mint);
  border-radius:0;
}
.progress-wrap{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:start;
}
.progress-intro h2{
  font-size:clamp(1.5rem,2.4vw,2.1rem);
  font-weight:650;
  line-height:1.3;
  margin:10px 0 14px;
  color:#0B302C;
}
.progress-intro p{font-size:15px;line-height:1.85;color:#20574F;max-width:440px;}
.progress-panel{
  background:#fff;
  border:1px solid rgba(14,58,53,.1);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:0 20px 44px -34px rgba(14,58,53,.6);
}
.progress-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.progress-top .stage-label{
  font-size:13px;
  font-weight:600;
  color:var(--deep);
}
.progress-top .stage-count{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--muted);
}
.progress-track{
  position:relative;
  height:8px;
  border-radius:999px;
  background:var(--mint);
  margin-bottom:26px;
}
.progress-fill{
  position:absolute;
  left:0;top:0;bottom:0;
  width:52%;
  border-radius:999px;
  background:linear-gradient(90deg,#E9633F,#F08359);
}
.progress-dots{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  transform:translateY(0);
}
.progress-dots i{
  width:12px;height:12px;
  border-radius:50%;
  background:#fff;
  border:1.5px solid rgba(14,58,53,.28);
  display:block;
}
.progress-dots i.done{background:var(--accent);border-color:var(--accent);}
.progress-dots i.current{background:#fff;border-color:var(--accent);box-shadow:0 0 0 4px rgba(233,99,63,.18);}
.task-list li{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 0;
  border-top:1px solid var(--line);
  font-size:14px;
}
.task-list li:first-child{border-top:0;}
.task-idx{
  width:24px;height:24px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-num);
  font-size:12px;
  font-weight:700;
  background:var(--paper-2);
  color:var(--deep);
  flex-shrink:0;
}
.task-name{flex:1;color:var(--ink);min-width:0;}
.task-state{font-size:13px;color:var(--muted);white-space:nowrap;}
.task-state.done{color:var(--deep-2);font-weight:600;}
.task-state.doing{color:var(--accent);font-weight:600;}

/* ---------- 最新信息 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
.news-card{
  display:flex;
  gap:16px;
  padding:18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  color:inherit;
  position:relative;
  overflow:hidden;
}
.news-card::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:32px;height:3px;
  background:var(--accent);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6CFC2;color:inherit;}
.news-thumb{
  width:104px;
  flex-shrink:0;
  aspect-ratio:16/10;
  border-radius:var(--radius-sm);
  overflow:hidden;
  background:var(--paper-2);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;gap:6px;min-width:0;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-time{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--muted);
}
.news-body h3{
  font-size:1rem;
  font-weight:650;
  line-height:1.5;
  color:var(--ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body p{
  font-size:14px;
  line-height:1.7;
  color:var(--ink-soft);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-more{
  margin-top:auto;
  font-size:13px;
  font-weight:600;
  color:var(--deep);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.news-card:hover .news-more{color:var(--accent);}
.news-more .arrow{transition:transform .2s var(--ease);}
.news-card:hover .news-more .arrow{transform:translateX(4px);}

.news-empty{
  min-height:120px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
  border:1px dashed var(--line);
  border-radius:var(--radius);
  background:rgba(255,255,255,.6);
  color:var(--muted);
  font-size:14px;
}
.news-empty svg{opacity:.55;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:60px;
  padding:14px 4px;
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--deep-2);}
.faq-icon{
  position:relative;
  width:18px;height:18px;
  flex-shrink:0;
  transition:transform .22s var(--ease),color .22s var(--ease);
  color:var(--muted);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:currentColor;
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.6px;}
.faq-icon::after{width:1.6px;height:14px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--accent);}
.faq-item[open] summary{color:var(--deep);}
.faq-answer{
  padding:0 4px 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-soft);
}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 72px;}
.cta-box{
  position:relative;
  background:linear-gradient(140deg,#0E3A35 0%,#12433C 62%,#17544C 100%);
  color:var(--white-soft);
  border-radius:24px;
  padding:40px 28px;
  display:flex;
  flex-direction:column;
  gap:24px;
  overflow:hidden;
}
.cta-box::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-90px;
  width:280px;height:280px;
  border-radius:50%;
  border:1px solid rgba(246,244,239,.14);
  pointer-events:none;
}
.cta-box h2{
  font-size:clamp(1.35rem,2.2vw,1.9rem);
  font-weight:700;
  line-height:1.35;
  color:#fff;
}
.cta-box p{
  margin-top:10px;
  font-size:15px;
  line-height:1.8;
  color:rgba(246,244,239,.74);
  max-width:520px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--deep);
  color:rgba(246,244,239,.72);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand .brand{color:#F6F4EF;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-text .b2{color:rgba(246,244,239,.6);}
.footer-brand .logo-mark{background:rgba(246,244,239,.12);color:var(--accent);}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:rgba(246,244,239,.66);
  max-width:320px;
}
.footer-col h3{
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:rgba(246,244,239,.5);
  margin-bottom:14px;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(246,244,239,.14);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(246,244,239,.56);
}
.footer-bottom .mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 进入视口动画 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .overview-grid{grid-template-columns:repeat(2,1fr);}
  .overview-item{padding:28px 24px;}
  .overview-item:nth-child(odd){border-left:0;}
  .overview-item:nth-child(-n+2){border-top:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .reward-grid{grid-template-columns:repeat(2,1fr);}
  .reward-main{grid-column:span 2;}
  .cta-box{padding:48px 40px;flex-direction:row;align-items:center;justify-content:space-between;}
  .cta-box p{max-width:560px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-col{border-left:1px solid rgba(246,244,239,.12);padding-left:24px;}
  .footer-brand{border-left:0;padding-left:0;}
}
@media (min-width:1024px){
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px;padding:64px 0 72px;min-height:560px;}
  .hero-media{padding-left:8px;}
  .hero-frame{aspect-ratio:4/3;}
  .overview-grid{grid-template-columns:repeat(3,1fr);}
  .overview-item{padding:32px 32px;}
  .overview-item:nth-child(3n+1){border-left:0;}
  .overview-item:nth-child(-n+3){border-top:0;}
  .overview-item + .overview-item{border-left:1px solid var(--line);}
  .steps{grid-template-columns:repeat(4,1fr);gap:0;}
  .step{
    border-left:0;
    padding:0 24px 0 0;
    border-top:1px dashed var(--line);
    padding-top:24px;
  }
  .step::before{display:none;}
  .step:last-child{border-top:1px dashed var(--line);}
  .reward-grid{grid-template-columns:repeat(3,1fr);}
  .reward-main{grid-column:span 2;grid-row:span 2;flex-direction:row;}
  .reward-main .reward-cover{
    width:42%;
    margin:26px 26px 26px 0;
    aspect-ratio:auto;
    align-self:stretch;
    order:2;
  }
  .reward-main .reward-body{order:1;justify-content:center;padding:32px;}
  .progress-wrap{grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:48px;}
}
@media (min-width:1440px){
  .hero-grid{padding:72px 0 88px;}
}

@media (max-width:1023px){
  .nav-burger{display:inline-flex;}
  .nav-panel{
    position:fixed;
    top:72px;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 24px 24px;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px -30px rgba(14,58,53,.5);
    max-height:calc(100vh - 72px);
    overflow-y:auto;
    z-index:59;
  }
  .nav-panel.is-open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-item{
    height:auto;
    min-height:52px;
    flex-wrap:wrap;
    border-bottom:1px solid var(--line);
    align-items:center;
  }
  .nav-item:last-child{border-bottom:0;}
  .nav-link{
    flex:1;
    height:auto;
    min-height:52px;
    padding:0;
    font-size:16px;
  }
  .nav-link::after{display:none;}
  .nav-item.is-active .nav-link{color:var(--accent);}
  .nav-sub-toggle{
    width:44px;height:44px;
    margin-left:0;
  }
  .mega{
    position:static;
    display:none;
    width:100%;
    opacity:1;
    visibility:visible;
    transform:none;
    box-shadow:none;
    border:0;
    border-radius:0;
    padding:0 0 16px;
    grid-template-columns:1fr;
    gap:16px;
  }
  .nav-item.open .mega{display:grid;}
  .mega-card{background:#fff;}
  .nav-cta{margin-top:16px;width:100%;padding:14px 22px;}
  .hero-actions .btn{flex:1 1 auto;}
}
@media (max-width:639px){
  .news-card{flex-direction:column;}
  .news-thumb{width:100%;}
  .hero-tags{gap:14px;}
  .overview-num{font-size:1.9rem;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#141917;
  --ink-soft:#4A544F;
  --line:#E2DCD2;
  --paper:#F6F4EF;
  --paper-2:#EFEAE1;
  --deep:#0E3A35;
  --deep-2:#17544C;
  --accent:#E9633F;
  --accent-deep:#D4552F;
  --accent-soft:#F7DBD1;
  --mint:#CFE4DC;
  --muted:#7A837E;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(20,25,23,.04);
  --sh-2:0 18px 40px -24px rgba(14,58,53,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:200ms;
  --container:1200px;
  --block:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;border:0;}
a{color:inherit;text-decoration:none;background:transparent;}
a:hover,a:focus{color:inherit;}
button{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5,h6{font-family:inherit;color:var(--ink);line-height:1.3;font-weight:700;margin:0;}
p,ul,ol,dl,figure{margin:0;}
ul,ol{list-style:none;padding:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1024px){.container{padding:0 32px;}}
.mono{font-family:"Inter","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;text-align:center;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(14,58,53,.06);border-color:var(--deep);color:var(--deep);}
.btn-light{background:var(--paper);color:var(--deep);border-color:var(--paper);}
.btn-light:hover{background:#fff;color:var(--deep);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  display:grid;place-items:center;width:38px;height:38px;border-radius:12px;
  background:var(--deep);color:#F2EFE8;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text .b1{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
.brand-text .b2{font-size:11px;letter-spacing:.06em;color:var(--muted);}
.nav-panel{display:flex;align-items:center;gap:24px;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-item{position:relative;}
.nav-link{
  display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--ink-soft);position:relative;
  transition:color var(--t) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-item.is-active > .nav-link{color:var(--ink);font-weight:600;}
.nav-item.is-active > .nav-link::after{transform:scaleX(1);}
.nav-item.has-mega > .nav-link{padding-right:32px;}
.nav-sub-toggle{
  position:absolute;top:50%;right:8px;transform:translateY(-50%);
  display:inline-flex;align-items:center;justify-content:center;
  width:20px;height:20px;padding:0;border:0;background:transparent;color:var(--muted);
  border-radius:6px;cursor:pointer;
  transition:transform var(--t) var(--ease),color var(--t) var(--ease);
}
.nav-sub-toggle:hover{color:var(--accent);}
.nav-item.is-open > .nav-sub-toggle{transform:translateY(-50%) rotate(180deg);color:var(--accent);}
.mega{
  position:absolute;top:100%;left:0;width:800px;max-width:calc(100vw - 48px);
  display:grid;grid-template-columns:1.2fr .9fr;gap:20px;padding:20px;
  background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),visibility var(--t) var(--ease);
}
.nav-item.has-mega:hover > .mega,
.nav-item.has-mega:focus-within > .mega,
.nav-item.is-open > .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega-list-title{font-size:11px;letter-spacing:.18em;color:var(--muted);font-weight:600;margin-bottom:8px;}
.mega-list a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--ink-soft);
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.mega-list a:hover{background:var(--paper);color:var(--ink);}
.mega-list .idx{
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;
  font-size:12px;font-weight:700;color:var(--accent);flex:none;width:20px;
}
.mega-side{display:flex;flex-direction:column;gap:10px;border-left:1px solid var(--line);padding-left:20px;}
.mega-card{
  display:block;padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--paper);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6CFC3;}
.mega-card .thumb{display:block;aspect-ratio:16/10;border-radius:8px;overflow:hidden;background:var(--paper-2);margin-bottom:8px;}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;}
.mega-card strong{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:2px;}
.mega-card span.tip{display:block;font-size:12px;color:var(--muted);line-height:1.6;}
.nav-burger{
  display:none;width:44px;height:44px;padding:0;border:1px solid var(--line);border-radius:12px;
  background:transparent;cursor:pointer;position:relative;flex:none;
}
.nav-burger span{position:absolute;left:50%;top:50%;width:18px;height:1.8px;background:var(--ink);border-radius:2px;transform:translate(-50%,-50%);transition:background var(--t) var(--ease);}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:1.8px;background:var(--ink);border-radius:2px;transition:transform var(--t) var(--ease);}
.nav-burger span::before{top:-6px;}
.nav-burger span::after{top:6px;}
.nav-burger[aria-expanded="true"] span{background:transparent;}
.nav-burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:26px 0 6px;font-size:13px;color:var(--muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li + li::before{content:"›";color:#B9B4AA;flex:none;}
.breadcrumb a{color:var(--ink-soft);transition:color var(--t) var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.crumb-current{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(420px,58vw);}

/* ---------- layout ---------- */
main{display:block;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 280px;
  gap:56px;justify-content:center;align-items:start;
  padding:24px 0 var(--block);
}

/* ---------- article head ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:#8A3B22;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.article-head h1{
  font-size:clamp(1.75rem,3vw,2.5rem);
  line-height:1.3;letter-spacing:-.01em;
  margin:16px 0 20px;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#C8C2B7;flex:none;}

/* ---------- article body ---------- */
.article-body{
  padding-top:32px;font-size:17px;line-height:1.85;color:var(--ink-soft);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > * + *{margin-top:1.2em;}
.article-body h2{
  font-size:clamp(1.25rem,2vw,1.55rem);font-weight:650;color:var(--ink);
  margin-top:40px;margin-bottom:12px;line-height:1.35;
}
.article-body h3{font-size:1.15rem;font-weight:600;color:var(--ink);margin-top:28px;margin-bottom:10px;}
.article-body h4{font-size:1rem;font-weight:600;color:var(--ink);margin-top:22px;margin-bottom:8px;}
.article-body a{color:var(--deep-2);border-bottom:1px solid rgba(23,84,76,.35);transition:color var(--t) var(--ease),border-color var(--t) var(--ease);}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.article-body strong{color:var(--ink);font-weight:650;}
.article-body img{border-radius:var(--r-img);margin:8px 0;max-width:100%;height:auto;}
.article-body figure{margin:1.4em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:8px;text-align:center;}
.article-body ul li{position:relative;padding-left:22px;margin:.5em 0;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.75em;width:7px;height:7px;border-radius:2px;background:var(--accent);
}
.article-body ol{counter-reset:item;}
.article-body ol li{position:relative;padding-left:30px;margin:.55em 0;counter-increment:item;}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:50%;background:var(--mint);color:var(--deep);
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;font-size:12px;font-weight:700;
  display:grid;place-items:center;line-height:1;
}
.article-body blockquote{
  margin:1.5em 0;padding:16px 22px;background:var(--paper-2);
  border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:var(--ink);
}
.article-body blockquote p{margin:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.4em 0;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--paper-2);color:var(--ink);font-weight:600;}
.article-body code{
  background:var(--paper-2);border-radius:6px;padding:2px 6px;font-size:.9em;
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
}

/* ---------- tags ---------- */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--paper-2);border:1px solid var(--line);font-size:13px;color:var(--ink-soft);
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.tag-link:hover{border-color:var(--accent);color:var(--accent);background:#fff;}

/* ---------- empty state ---------- */
.article-empty{
  padding:64px 24px;text-align:center;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;
}
.article-empty h1{font-size:clamp(1.5rem,2.6vw,2rem);margin-bottom:12px;}
.article-empty p{font-size:15px;color:var(--ink-soft);margin-bottom:24px;}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;
  padding:20px;box-shadow:var(--sh-1);
}
.side-card h2{font-size:12px;letter-spacing:.14em;color:var(--muted);font-weight:600;margin-bottom:14px;}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;border-top:1px solid var(--line);font-size:14px;color:var(--ink-soft);
  transition:color var(--t) var(--ease);
}
.side-link:first-of-type{border-top:0;padding-top:0;}
.side-link:last-of-type{padding-bottom:0;}
.side-link:hover{color:var(--accent);}
.side-link .arrow{color:#BEB8AC;transition:transform var(--t) var(--ease),color var(--t) var(--ease);}
.side-link:hover .arrow{transform:translateX(4px);color:var(--accent);}
.side-note{font-size:13px;line-height:1.8;color:var(--muted);}
.side-card.deep{background:var(--deep);border-color:var(--deep);}
.side-card.deep h2{color:rgba(255,255,255,.55);}
.side-card.deep p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.76);margin-bottom:16px;}

/* ---------- related ---------- */
.related{margin-top:64px;padding-top:40px;border-top:1px solid var(--line);}
.block-head{display:flex;align-items:center;gap:16px;margin-bottom:24px;}
.block-head .label{font-size:11px;letter-spacing:.18em;color:var(--muted);font-weight:600;flex:none;}
.block-head h2{font-size:clamp(1.25rem,2vw,1.6rem);font-weight:650;flex:none;}
.block-head .rule{flex:1;height:1px;background:var(--line);}
.related-list{display:flex;flex-direction:column;gap:16px;}
.related-item{
  display:grid;grid-template-columns:168px minmax(0,1fr) auto;gap:20px;align-items:center;
  padding:16px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.related-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D8D1C5;}
.related-thumb{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:var(--paper-2);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t) var(--ease);}
.related-item:hover .related-thumb img{transform:scale(1.03);}
.related-body h3{font-size:1.05rem;font-weight:600;margin-bottom:6px;color:var(--ink);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.related-body p{font-size:14px;color:var(--ink-soft);line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.related-go{font-size:13px;color:var(--muted);white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.related-item:hover .related-go{color:var(--accent);}

/* ---------- cta ---------- */
.cta-wrap{padding-bottom:var(--block);}
.cta-band{
  background:var(--deep);border-radius:24px;padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-band h2{color:#F6F4EF;font-size:clamp(1.35rem,2.4vw,1.9rem);font-weight:650;margin-bottom:10px;}
.cta-band p{color:rgba(246,244,239,.74);font-size:15px;max-width:520px;line-height:1.8;}
.cta-band .btn{flex:none;}

/* ---------- footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:64px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:40px;}
.site-footer .logo-mark{background:rgba(255,255,255,.1);color:#F6F4EF;}
.site-footer .brand-text .b1{color:#F6F4EF;}
.site-footer .brand-text .b2{color:rgba(255,255,255,.6);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:280px;}
.footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:32px;}
.footer-col h3{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.55);font-weight:600;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t) var(--ease);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- responsive ---------- */
@media (min-width:640px){:root{--block:96px;}}
@media (min-width:1024px){:root{--block:120px;}}

@media (max-width:1023px){
  .nav-burger{display:inline-flex;}
  .nav-panel{
    display:none;position:absolute;top:72px;left:0;right:0;
    background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    padding:8px 24px 24px;max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .nav-panel.is-open{display:block;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-item{border-bottom:1px solid var(--line);}
  .nav-link{height:52px;width:100%;padding:0;font-size:16px;}
  .nav-link::after{display:none;}
  .nav-item.has-mega > .nav-link{padding-right:52px;}
  .nav-item.is-active > .nav-link{color:var(--accent);}
  .nav-sub-toggle{right:0;width:44px;height:44px;}
  .mega{
    position:static;width:auto;max-width:none;display:none;
    grid-template-columns:1fr;gap:0;padding:0 0 16px;
    background:transparent;border:0;border-radius:0;box-shadow:none;
    opacity:1;visibility:visible;transform:none;
  }
  .nav-item.is-open > .mega{display:grid;}
  .nav-item.has-mega:hover > .mega,
  .nav-item.has-mega:focus-within > .mega{opacity:1;visibility:visible;transform:none;}
  .mega-side{border-left:0;padding-left:0;flex-direction:row;gap:10px;}
  .mega-card{flex:1;min-width:0;}
  .mega-list-title{display:none;}
  .mega-list a{padding:12px 6px;}
  .header-cta{width:100%;margin-top:16px;}
  .article-layout{grid-template-columns:1fr;gap:40px;padding-top:16px;}
  .article-side{position:static;order:2;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-col{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px;}
}

@media (max-width:767px){
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin-top:32px;}
  .related-item{grid-template-columns:104px minmax(0,1fr);gap:14px;}
  .related-go{display:none;}
  .cta-band{padding:32px 24px;border-radius:20px;}
  .cta-band .btn{width:100%;}
  .breadcrumb{padding-top:18px;}
}

@media (max-width:519px){
  .container{padding:0 20px;}
  .header-inner{gap:12px;}
  .brand-text .b1{font-size:16px;}
  .brand-text .b2{font-size:10px;}
  .article-head h1{font-size:1.6rem;}
  .article-meta{font-size:12px;gap:8px;}
  .crumb-current{max-width:44vw;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
  .related-item:hover,.mega-card:hover,.btn:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#141917;
  --ink-soft:#4A544F;
  --line:#E2DCD2;
  --paper:#F6F4EF;
  --paper-2:#EFEAE1;
  --deep:#0E3A35;
  --deep-2:#17544C;
  --accent:#E9633F;
  --accent-soft:#F7DBD1;
  --mint:#CFE4DC;
  --muted:#7A837E;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,25,23,.04);
  --sh-2:0 18px 40px -24px rgba(14,58,53,.35);
  --sec:120px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:200ms;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease);}
button{font-family:inherit;}
h1,h2,h3,h4,h5,h6{
  margin:0;
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-weight:700;
  letter-spacing:-0.01em;
  line-height:1.25;
}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
.mono{font-family:"Inter","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px;}
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,244,239,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.logo-mark{
  width:40px;height:40px;
  flex:none;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--deep);
  color:var(--mint);
  box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text .b1{font-size:16px;font-weight:700;letter-spacing:.04em;color:var(--ink);}
.brand-text .b2{font-size:10.5px;letter-spacing:.1em;color:var(--muted);}

.nav-burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  cursor:pointer;
  position:relative;
  padding:0;
}
.nav-burger span,
.nav-burger span::before,
.nav-burger span::after{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  width:18px;height:1.6px;
  background:var(--ink);
  border-radius:2px;
  content:"";
  transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);
}
.nav-burger span{top:50%;margin-top:-0.8px;}
.nav-burger span::before{top:-6px;left:0;transform:none;}
.nav-burger span::after{top:6px;left:0;transform:none;}
.nav-burger.is-open span{background:transparent;}
.nav-burger.is-open span::before{transform:rotate(45deg);top:0;}
.nav-burger.is-open span::after{transform:rotate(-45deg);top:0;}

.nav-panel{
  display:flex;
  align-items:center;
  gap:16px;
  flex:1;
  justify-content:flex-end;
}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-item{
  display:flex;
  align-items:center;
  gap:2px;
  height:72px;
  padding:0 2px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  color:var(--ink-soft);
  font-weight:500;
  white-space:nowrap;
}
.nav-link:hover{background:rgba(14,58,53,.06);color:var(--ink);}
.nav-item.is-active .nav-link{color:var(--ink);font-weight:700;}
.nav-item.is-active .nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.nav-sub-toggle{
  width:26px;height:26px;
  display:grid;place-items:center;
  border:0;background:transparent;
  color:var(--ink-soft);
  border-radius:8px;
  cursor:pointer;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-sub-toggle:hover{background:rgba(14,58,53,.08);}
.nav-item.is-open-mega .nav-sub-toggle{transform:rotate(180deg);}

.mega{
  position:fixed;
  top:72px;
  left:50%;
  width:min(620px,calc(100vw - 48px));
  transform:translateX(-50%) translateY(-8px);
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:20px;
  padding:22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:0 24px 60px -34px rgba(14,58,53,.45);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms;
  z-index:90;
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega,
.nav-item.is-open-mega .mega{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.mega-list-title{
  margin:0 0 10px;
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
  font-weight:600;
}
.mega-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--ink-soft);
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.mega-list a:hover{background:var(--paper-2);color:var(--ink);}
.mega-list .idx{
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:11px;
  color:var(--accent);
  font-weight:700;
  flex:none;
}
.mega-card{
  display:block;
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px;
  background:var(--paper);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.mega-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.mega-card .thumb{
  display:block;
  aspect-ratio:16/10;
  border-radius:10px;
  overflow:hidden;
  background:var(--paper-2);
  margin-bottom:10px;
}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;}
.mega-card strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px;}
.mega-card span.desc{display:block;font-size:12.5px;color:var(--muted);line-height:1.6;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
  text-align:center;
  line-height:1.2;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 10px 24px -16px rgba(233,99,63,.9);
}
.btn-primary:hover{background:#d9552f;transform:translateY(-2px);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn-ghost:hover{background:rgba(20,25,23,.06);}
.btn-light{
  background:var(--paper);
  color:var(--deep);
  border-color:var(--paper);
}
.btn-light:hover{background:#fff;transform:translateY(-2px);color:var(--deep);}
.nav-cta{padding:11px 22px;font-size:14px;flex:none;}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0;}
.section.tight{padding:72px 0;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
  font-weight:600;
  margin-bottom:14px;
}
.eyebrow i{
  display:block;
  width:14px;height:2px;
  border-radius:2px;
  background:var(--accent);
}

.sec-head{margin-bottom:40px;}
.sec-head h2{
  display:flex;
  align-items:center;
  gap:20px;
  font-size:clamp(1.5rem,2.4vw,2.1rem);
  font-weight:650;
  line-height:1.3;
}
.sec-head h2::after{
  content:"";
  flex:1;
  height:1px;
  background:var(--line);
  min-width:32px;
}
.sec-head p{
  margin:12px 0 0;
  font-size:15.5px;
  color:var(--ink-soft);
  max-width:720px;
}

/* ---------- category hero ---------- */
.cat-hero{
  padding:64px 0 56px;
  border-bottom:1px solid var(--line);
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.cat-hero h1{
  font-size:clamp(2rem,3.4vw,2.9rem);
  line-height:1.18;
  letter-spacing:-0.02em;
  font-weight:700;
  margin:0 0 18px;
}
.cat-hero .lead{
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-soft);
  margin:0 0 26px;
  max-width:560px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag-row li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  font-size:12.5px;
  color:var(--ink-soft);
}
.tag-row li::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--mint);
  flex:none;
}
.cat-hero-media{
  position:relative;
  aspect-ratio:4/3;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--paper-2);
  box-shadow:var(--sh-1);
}
.cat-hero-media img{width:100%;height:100%;object-fit:cover;}
.cat-hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(150deg,rgba(14,58,53,.42),rgba(14,58,53,0) 62%);
  pointer-events:none;
}
.media-badge{
  position:absolute;
  left:16px;top:16px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  background:rgba(246,244,239,.94);
  color:var(--deep);
  font-size:12px;
  font-weight:600;
}

/* ---------- flow bracket ---------- */
.flow-bracket{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.flow-step{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--mint);}
.flow-step::after{
  content:"";
  position:absolute;
  right:-14px;
  top:50%;
  width:10px;
  height:1px;
  border-top:1px dashed var(--line);
}
.flow-step:last-child::after{display:none;}
.flow-num{
  display:block;
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:2rem;
  font-weight:700;
  color:var(--mint);
  line-height:1;
  margin-bottom:14px;
  letter-spacing:-.02em;
}
.flow-step h3{
  font-size:1rem;
  font-weight:700;
  margin:0 0 8px;
}
.flow-step p{
  margin:0 0 14px;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-soft);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  background:var(--accent-soft);
  color:#8b3520;
  white-space:nowrap;
}
.badge.mint{background:var(--mint);color:var(--deep);}
.badge.line{background:transparent;border:1px solid var(--line);color:var(--ink-soft);}
.badge.deep{background:var(--deep);color:var(--paper);}

/* ---------- split blocks ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.split.reverse .split-media{order:2;}
.split-media{
  aspect-ratio:16/11;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--paper-2);
  border:1px solid var(--line);
}
.split-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 240ms var(--ease);
}
.split-media:hover img{transform:scale(1.03);}
.split-copy h2{
  font-size:clamp(1.4rem,2.2vw,1.85rem);
  font-weight:650;
  margin:0 0 16px;
  line-height:1.3;
}
.split-copy p{
  font-size:16px;
  line-height:1.85;
  color:var(--ink-soft);
  margin:0 0 1.15em;
}
.check-list{
  display:grid;
  gap:10px;
  margin-top:20px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.check-list li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--ink-soft);
  line-height:1.7;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--accent);
  opacity:.85;
}

.split + .split{margin-top:88px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:60px;
  padding:16px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--deep-2);}
.faq-icon{
  position:relative;
  width:18px;height:18px;
  flex:none;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-soft);
  border-radius:2px;
  transition:transform 200ms var(--ease),opacity 200ms var(--ease),background 200ms var(--ease);
}
.faq-icon::before{left:0;top:8.2px;width:18px;height:1.6px;}
.faq-icon::after{left:8.2px;top:0;width:1.6px;height:18px;}
.faq-item[open] .faq-icon::before{background:var(--accent);}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-answer{
  padding:0 4px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-soft);
  max-width:740px;
}

/* ---------- cta ---------- */
.cta-block{
  position:relative;
  overflow:hidden;
  background:var(--deep);
  border-radius:24px;
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:300px;
  height:300px;
  border-radius:50%;
  border:1px solid rgba(207,228,220,.16);
  pointer-events:none;
}
.cta-block::before{
  content:"";
  position:absolute;
  right:-140px;
  top:-140px;
  width:400px;
  height:400px;
  border-radius:50%;
  border:1px solid rgba(207,228,220,.1);
  pointer-events:none;
}
.cta-block h2{
  color:var(--paper);
  font-size:clamp(1.4rem,2.2vw,1.9rem);
  margin:0 0 10px;
  font-weight:650;
}
.cta-block p{
  margin:0;
  color:rgba(246,244,239,.76);
  font-size:15.5px;
  max-width:560px;
}
.cta-block .btn{position:relative;z-index:2;flex:none;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--deep);
  color:var(--paper);
  padding:72px 0 28px;
  margin-top:var(--sec);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:48px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(246,244,239,.1);color:var(--mint);}
.footer-brand .b1{color:var(--paper);}
.footer-brand .b2{color:rgba(246,244,239,.6);}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.68);
  margin:0;
  max-width:300px;
}
.footer-col h3{
  font-size:12px;
  letter-spacing:.2em;
  color:rgba(255,255,255,.5);
  font-weight:600;
  margin:0 0 16px;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{
  font-size:14.5px;
  color:rgba(255,255,255,.72);
  position:relative;
  display:inline-block;
}
.footer-col a:hover{color:#fff;}
.footer-col a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:0;height:1px;
  background:rgba(255,255,255,.85);
  transition:width 200ms var(--ease);
}
.footer-col a:hover::after{width:100%;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:rgba(255,255,255,.56);
  flex-wrap:wrap;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec:96px;}
  .nav-burger{display:grid;place-items:center;}
  .nav-panel{
    position:absolute;
    top:72px;
    left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    padding:12px 16px 22px;
    max-height:calc(100vh - 72px);
    overflow-y:auto;
    box-shadow:0 24px 40px -30px rgba(14,58,53,.4);
  }
  .nav-panel.is-open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-item{
    height:auto;
    min-height:52px;
    flex-wrap:wrap;
    justify-content:space-between;
    padding:0;
    border-bottom:1px solid var(--line);
  }
  .nav-link{
    flex:1;
    min-height:52px;
    display:flex;
    align-items:center;
    padding:0 4px;
    font-size:16px;
    border-radius:0;
  }
  .nav-link:hover{background:transparent;}
  .nav-item.is-active .nav-link::after{left:4px;right:auto;width:20px;bottom:10px;}
  .nav-sub-toggle{
    width:44px;height:52px;
    border-radius:0;
    border-left:1px solid var(--line);
  }
  .mega{
    position:static;
    transform:none;
    width:100%;
    display:none;
    grid-template-columns:1fr;
    gap:14px;
    padding:14px;
    margin:0 0 14px;
    border-radius:12px;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    background:var(--paper-2);
  }
  .nav-item.is-open-mega .mega{display:grid;}
  .nav-item.has-mega:hover .mega,
  .nav-item.has-mega:focus-within .mega{display:none;}
  .nav-item.has-mega.is-open-mega:hover .mega,
  .nav-item.has-mega.is-open-mega:focus-within .mega{display:grid;}
  .mega-side{display:grid;gap:12px;}
  .nav-cta{margin-top:18px;width:100%;}

  .cat-hero{padding:48px 0 44px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero-media{aspect-ratio:16/10;max-height:300px;}
  .flow-bracket{grid-template-columns:repeat(2,1fr);gap:16px;}
  .flow-step::after{display:none;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-brand{grid-column:1 / -1;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .cta-block .btn{width:100%;}
}

@media (max-width:639px){
  :root{--sec:72px;}
  body{font-size:15.5px;}
  .cat-hero h1{font-size:clamp(1.65rem,7.2vw,2.1rem);}
  .cat-hero .lead{font-size:15.5px;}
  .tag-row li{font-size:12px;padding:6px 12px;}
  .sec-head h2{font-size:1.35rem;gap:14px;}
  .sec-head p{font-size:14.5px;}
  .flow-bracket{grid-template-columns:1fr;}
  .flow-step{padding:22px 20px;}
  .flow-num{font-size:1.7rem;}
  .split-media{aspect-ratio:16/11;}
  .split-copy p{font-size:15.5px;}
  .check-list li{font-size:14px;}
  .faq-item summary{font-size:16px;padding:14px 2px;}
  .faq-answer{font-size:14.5px;padding:0 2px 20px;}
  .cta-block{padding:30px 22px;border-radius:18px;}
  .site-footer{margin-top:var(--sec);padding:52px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .btn{width:100%;}
  .cat-hero .btn{width:auto;}
}

@media (min-width:640px) and (max-width:1023px){
  .flow-bracket{grid-template-columns:repeat(2,1fr);}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#141917;
  --ink-soft:#4A544F;
  --muted:#7A837E;
  --line:#E2DCD2;
  --paper:#F6F4EF;
  --paper-2:#EFEAE1;
  --deep:#0E3A35;
  --deep-2:#17544C;
  --accent:#E9633F;
  --accent-dark:#D4522F;
  --accent-soft:#F7DBD1;
  --mint:#CFE4DC;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:999px;
  --shadow-sm:0 1px 2px rgba(20,25,23,.04);
  --shadow-hover:0 18px 40px -24px rgba(14,58,53,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(246,244,239,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--deep);color:var(--paper);
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text .b1{font-size:15px;font-weight:700;letter-spacing:.04em;color:var(--ink)}
.brand-text .b2{font-size:11px;letter-spacing:.08em;color:var(--muted);margin-top:2px}
.nav-burger{
  display:none;margin-left:auto;
  width:44px;height:44px;border:1px solid var(--line);
  border-radius:12px;background:transparent;position:relative;cursor:pointer;
  transition:background .2s var(--ease);
}
.nav-burger span{position:absolute;left:12px;right:12px;top:50%;height:2px;margin-top:-1px;background:var(--ink);border-radius:2px}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--ink);border-radius:2px}
.nav-burger span::before{top:-7px}
.nav-burger span::after{top:7px}
.nav-burger:hover{background:var(--paper-2)}
.nav-panel{display:flex;align-items:center;gap:20px;margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-item{position:relative;display:flex;align-items:center}
.nav-link{
  display:inline-block;padding:10px 12px;
  font-size:15px;font-weight:500;color:var(--ink-soft);
  position:relative;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-item.is-active .nav-link{color:var(--ink);font-weight:700}
.nav-item.is-active .nav-link::after{transform:scaleX(1)}
.nav-sub-toggle{
  width:26px;height:26px;border:0;background:transparent;color:var(--muted);
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-sub-toggle:hover{color:var(--ink);background:var(--paper-2)}
.nav-item.is-open .nav-sub-toggle svg{transform:rotate(180deg)}
.nav-sub-toggle svg{transition:transform .22s var(--ease)}
.has-mega::after{content:"";position:absolute;left:0;right:0;top:100%;height:16px}
.mega{
  position:absolute;top:calc(100% + 12px);right:0;
  width:760px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 60px -32px rgba(14,58,53,.45);
  padding:20px;display:grid;grid-template-columns:1.3fr .85fr;gap:20px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
}
.has-mega:hover .mega,.has-mega:focus-within .mega,.has-mega.is-open .mega{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-list-title{
  font-size:11px;letter-spacing:.18em;color:#8B948E;
  padding:4px 12px 10px;text-transform:uppercase;
}
.mega-list a{
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--ink-soft);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.mega-list a:hover{background:var(--paper-2);color:var(--ink)}
.mega-list .idx{font-family:var(--font-num);font-size:12px;color:#A9A196;font-variant-numeric:tabular-nums}
.mega-side{display:grid;gap:12px;align-content:start}
.mega-card{
  display:block;padding:12px;border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.mega-card:hover{border-color:var(--mint);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.mega-card .thumb{
  display:block;aspect-ratio:16/10;overflow:hidden;border-radius:10px;
  background:var(--paper-2);margin-bottom:10px;
}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.mega-card:hover .thumb img{transform:scale(1.03)}
.mega-card strong{display:block;font-size:14px;font-weight:600;color:var(--ink)}
.mega-card span.desc{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.mega-card .arrow{display:inline-block;margin-top:8px;font-size:13px;color:var(--accent);transition:transform .2s var(--ease)}
.mega-card:hover .arrow{transform:translateX(4px)}
@media(max-width:1279px){.mega{width:640px;grid-template-columns:1.2fr .9fr}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border:0;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -18px rgba(233,99,63,.9)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid rgba(14,58,53,.35);color:var(--deep)}
.btn-ghost:hover{border-color:var(--deep);background:rgba(14,58,53,.05)}
.btn-light{background:var(--paper);color:var(--deep)}
.btn-light:hover{background:#fff;transform:translateY(-2px)}
.nav-cta{padding:11px 22px;font-size:14px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--deep);
  position:relative;padding-bottom:2px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.text-link:hover::after{transform:scaleX(1)}
.text-link .arrow{transition:transform .2s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:22px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--ink)}
.crumb .sep{color:#C4BDB1}
.crumb .current{color:var(--ink-soft);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- KV ---------- */
.kv{padding:32px 0 8px}
.kv-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:14px}
.kicker::before{content:"";width:12px;height:12px;border-radius:3px;background:var(--accent);display:inline-block}
.kv h1{
  font-size:clamp(1.85rem,3.1vw,2.6rem);
  font-weight:700;line-height:1.25;letter-spacing:-.02em;
  margin-bottom:16px;
}
.kv .lede{font-size:16.5px;color:var(--ink-soft);max-width:52ch;margin-bottom:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:999px;
  background:var(--paper-2);color:var(--ink-soft);
  font-size:12.5px;
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.kv-media{
  position:relative;aspect-ratio:4/3;border-radius:var(--radius-card);
  overflow:hidden;background:var(--paper-2);
  border:1px solid var(--line);
}
.kv-media img{width:100%;height:100%;object-fit:cover}
.kv-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(14,58,53,.52),rgba(14,58,53,.18) 60%,rgba(14,58,53,0));
}
.kv-media .media-note{
  position:absolute;left:18px;bottom:16px;z-index:2;
  font-size:12px;letter-spacing:.14em;color:rgba(246,244,239,.92);
}

/* ---------- shared section ---------- */
.section{padding:52px 0}
.sec-head{display:flex;align-items:center;gap:16px;margin-bottom:10px}
.sec-tag{
  font-size:11px;letter-spacing:.18em;color:#8B948E;
  border-right:1px solid var(--line);padding-right:14px;white-space:nowrap;
}
.sec-head h2{
  font-size:clamp(1.4rem,2.1vw,1.95rem);font-weight:650;line-height:1.3;
  letter-spacing:-.01em;
}
.sec-head::after{content:"";flex:1;height:1px;background:var(--line)}
.sec-lede{font-size:15.5px;color:var(--ink-soft);max-width:820px;margin-bottom:28px}

/* ---------- reward matrix ---------- */
.feature-card{
  display:grid;grid-template-columns:1fr 360px;
  background:var(--deep);color:#F6F4EF;
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:0 30px 60px -48px rgba(14,58,53,.85);
}
.feature-body{padding:36px 36px 34px}
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--accent-soft);color:#A63A1A;
}
.feature-card .badge{background:rgba(246,244,239,.16);color:#F6F4EF}
.feature-card h3{
  font-size:clamp(1.35rem,2vw,1.75rem);font-weight:650;
  margin:16px 0 12px;line-height:1.3;color:#F6F4EF;
}
.feature-card p{font-size:15px;color:rgba(246,244,239,.74);max-width:48ch}
.feature-stats{display:flex;flex-wrap:wrap;gap:32px;margin:26px 0 28px}
.feature-stats .st{display:flex;flex-direction:column;gap:4px}
.feature-stats .st b{font-family:var(--font-num);font-size:1.6rem;font-weight:700;letter-spacing:-.02em;color:#F6F4EF}
.feature-stats .st span{font-size:12.5px;color:rgba(246,244,239,.6)}
.feature-media{position:relative;overflow:hidden;background:var(--deep-2)}
.feature-media img{width:100%;height:100%;object-fit:cover;opacity:.92}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,58,53,.9),rgba(14,58,53,.1));
}
.reward-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:22px;
}
.reward-card{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.reward-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--mint)}
.rc-icon{
  width:40px;height:40px;border-radius:12px;
  background:var(--mint);color:var(--deep);
  display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.reward-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px;padding-right:72px;line-height:1.45}
.reward-card p{font-size:14px;color:var(--ink-soft);line-height:1.75}
.status{
  position:absolute;top:20px;right:20px;
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;white-space:nowrap;
}
.status.is-live{background:var(--accent-soft);color:#A63A1A}
.status.is-done{background:var(--mint);color:var(--deep-2)}
.status.is-soon{background:var(--paper-2);color:var(--muted)}

/* ---------- stages ---------- */
.stage-bar{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px 28px 28px;
}
.stage-track{display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.stage-track::before{
  content:"";position:absolute;top:7px;left:12.5%;right:12.5%;height:2px;
  background:linear-gradient(90deg,var(--accent) 0%,var(--accent) 33%,var(--line) 33%,var(--line) 100%);
  border-radius:2px;
}
.stage-node{text-align:center;position:relative;padding:0 8px}
.stage-node .dot{
  width:16px;height:16px;border-radius:50%;margin:0 auto 16px;
  background:var(--paper-2);border:2px solid #CFC8BC;
  position:relative;z-index:1;
}
.stage-node.is-done .dot{border-color:var(--accent);background:var(--paper-2)}
.stage-node.is-current .dot{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 5px rgba(233,99,63,.16)}
.stage-node h3{font-size:15px;font-weight:600;margin-bottom:6px}
.stage-node p{font-size:13px;color:var(--muted);line-height:1.7}
.stage-node .node-state{
  display:inline-block;margin-top:10px;font-size:12px;
  color:var(--muted);letter-spacing:.04em;
}
.stage-node.is-current .node-state{color:var(--accent);font-weight:600}
.stage-node.is-done .node-state{color:var(--deep-2);font-weight:600}

/* ---------- checklist rows ---------- */
.check-list{display:grid;gap:14px}
.check-row{
  display:grid;grid-template-columns:48px 1fr auto;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 24px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.check-row:hover{border-color:var(--mint);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.check-row .num{
  font-family:var(--font-num);font-size:15px;font-weight:700;
  color:var(--deep);background:var(--mint);
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.check-row h3{font-size:15.5px;font-weight:600;margin-bottom:4px}
.check-row p{font-size:14px;color:var(--ink-soft);line-height:1.75}
.check-row .row-state{font-size:13px;color:var(--muted);white-space:nowrap}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding:16px 0;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--muted);
  line-height:1;transition:transform .22s var(--ease),color .22s var(--ease);
  flex-shrink:0;
}
.faq-item summary:hover{color:var(--deep)}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent)}
.faq-answer{padding:0 0 22px;font-size:15px;color:var(--ink-soft);line-height:1.85;max-width:74ch}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:24px;
  padding:40px;
  display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
}
.cta-band h2{font-size:clamp(1.3rem,2vw,1.7rem);font-weight:650;line-height:1.35;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--ink-soft);max-width:46ch}
.query-form{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.query-form input{
  width:280px;height:50px;padding:0 16px;
  border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink);font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.query-form input::placeholder{color:#A9A196}
.query-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(233,99,63,.16)}
.query-form input.is-invalid{border-color:var(--accent);box-shadow:0 0 0 3px rgba(233,99,63,.16)}
.form-tip{width:100%;font-size:13px;color:var(--muted);min-height:18px}

/* ---------- footer ---------- */
.site-footer{background:var(--deep);color:rgba(246,244,239,.86);margin-top:72px;padding:64px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:44px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .brand-text .b1{color:var(--paper)}
.site-footer .brand-text .b2{color:rgba(255,255,255,.55)}
.site-footer .logo-mark{background:rgba(255,255,255,.12);color:var(--paper)}
.footer-desc{font-size:14px;color:rgba(255,255,255,.6);margin-top:18px;max-width:320px;line-height:1.8}
.footer-col h3{
  font-size:12px;letter-spacing:.16em;font-weight:600;
  color:rgba(255,255,255,.5);margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);
}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.04em}

/* ---------- responsive ---------- */
@media(max-width:1023px){
  .nav-burger{display:inline-flex;align-items:center;justify-content:center}
  .nav-panel{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:12px 24px 24px;flex-direction:column;align-items:stretch;gap:4px;
    max-height:calc(100vh - 72px);overflow-y:auto;
    box-shadow:0 24px 40px -32px rgba(14,58,53,.4);
  }
  .nav-panel.is-open{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{flex-direction:column;align-items:stretch;justify-content:flex-start}
  .nav-link{display:flex;align-items:center;min-height:52px;padding:0 40px 0 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-item.is-active .nav-link{color:var(--accent)}
  .nav-sub-toggle{position:absolute;right:0;top:12px;width:40px;height:40px;border:1px solid var(--line);background:#fff}
  .mega{
    position:static;width:100%;max-width:none;
    opacity:1;visibility:visible;transform:none;
    display:none;box-shadow:none;border:0;background:transparent;padding:8px 0 16px;
    grid-template-columns:1fr;gap:14px;
  }
  .has-mega.is-open .mega{display:grid}
  .has-mega::after{display:none}
  .mega-side{grid-template-columns:1fr 1fr}
  .nav-cta{margin-top:16px;width:100%}
  .kv-grid{grid-template-columns:1fr;gap:28px}
  .kv-media{max-height:300px;aspect-ratio:16/10}
  .feature-card{grid-template-columns:1fr}
  .feature-media{height:220px;order:-1}
  .feature-media::after{background:linear-gradient(180deg,rgba(14,58,53,.55),rgba(14,58,53,.15))}
  .reward-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;gap:24px;padding:32px}
  .query-form input{width:100%;flex:1 1 240px}
  .query-form .btn{flex:1 1 auto}
}
@media(max-width:767px){
  .section{padding:40px 0}
  .kv{padding:24px 0 4px}
  .kv .lede{font-size:15.5px}
  .feature-body{padding:26px 22px}
  .feature-stats{gap:24px;margin:22px 0 24px}
  .reward-grid{grid-template-columns:1fr}
  .reward-card{padding:20px}
  .reward-card h3{padding-right:78px}
  .stage-track{grid-template-columns:1fr;gap:20px}
  .stage-track::before{display:none}
  .stage-node{text-align:left;display:grid;grid-template-columns:16px 1fr;gap:16px;padding:0}
  .stage-node .dot{margin:6px 0 0}
  .stage-node .node-body{grid-column:2}
  .stage-node .node-state{margin-top:6px}
  .check-row{grid-template-columns:40px 1fr;gap:16px;padding:18px}
  .check-row .row-state{grid-column:2;font-size:12.5px}
  .faq-item summary{font-size:16px;min-height:56px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mega-side{grid-template-columns:1fr}
  .crumb .current{max-width:200px}
}
@media(max-width:520px){
  .brand-text .b1{font-size:14px}
  .brand-text .b2{font-size:10.5px}
  .cta-band{padding:24px 20px;border-radius:18px}
  .query-form{flex-direction:column;align-items:stretch}
  .query-form .btn{width:100%}
  .kv h1{font-size:1.72rem}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reward-card:hover,.check-row:hover,.mega-card:hover,.btn:hover{transform:none!important}
}