/* roulang page: index */
:root{
  --carbon:#171C1F;
  --carbon-deep:#0A0E10;
  --copper:#B3874A;
  --gold:#D6B370;
  --gold-soft:rgba(214,179,112,.16);
  --text-body:#40474D;
  --text-muted:#6E767B;
  --bg-soft:#F4F3F0;
  --bg-pale:#FAFAF8;
  --card:#FFFFFF;
  --line:rgba(23,28,31,.1);
  --line-gold:rgba(179,135,74,.35);
  --success:#2F8F5B;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:16px;
  --radius-xl:24px;
  --shadow-sm:0 2px 12px rgba(23,28,31,.05);
  --shadow-md:0 10px 32px rgba(23,28,31,.08);
  --shadow-lg:0 20px 50px rgba(23,28,31,.12);
  --transition:all .28s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text-body);
  background:#fff;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button,.btn:focus{outline:none}
h1,h2,h3,h4,h5,h6,.h1,.h2,.h3,.h4{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--carbon);
  font-weight:700;
  line-height:1.35;
}
.container{max-width:1288px}
.container-narrow{max-width:1040px}

.text-gold{color:var(--gold)!important}
.btn{
  border-radius:var(--radius-sm);
  font-weight:600;
  padding:.72rem 1.35rem;
  font-size:1rem;
  transition:var(--transition);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  border:1px solid transparent;
}
.btn:active{transform:scale(.98)}
.btn-gold{
  background:linear-gradient(135deg,#D6B370,#B3874A);
  border-color:#B3874A;
  color:var(--carbon-deep);
  box-shadow:0 8px 24px rgba(179,135,74,.24);
}
.btn-gold:hover{
  color:var(--carbon-deep);
  background:linear-gradient(135deg,#E4C588,#C0965B);
  box-shadow:0 12px 32px rgba(214,179,112,.38);
  transform:translateY(-2px);
}
.btn-ghost-light{
  border-color:rgba(255,255,255,.55);
  color:#F7F3EA;
  background:transparent;
}
.btn-ghost-light:hover{
  border-color:var(--gold);
  color:var(--gold);
  background:rgba(214,179,112,.08);
  transform:translateY(-2px);
}
.btn-dark{
  background:var(--carbon-deep);
  color:#fff;
  border-color:var(--carbon-deep);
}
.btn-dark:hover{
  background:#2A3338;
  color:var(--gold);
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(10,14,16,.25);
}
.btn-outline-copper{
  border-color:var(--copper);
  color:var(--copper);
  background:transparent;
}
.btn-outline-copper:hover{
  background:var(--gold-soft);
  color:var(--carbon);
  transform:translateY(-2px);
}
.btn-lg{padding:.9rem 1.9rem;font-size:1.08rem}
.btn-lg i{margin-right:.25rem}

/* ===== header ===== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1200;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(10,14,16,.30);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:height .3s ease, background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled{
  height:60px;
  background:rgba(10,14,16,.92);
  box-shadow:0 10px 30px rgba(0,0,0,.22);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  width:100%;
}
.header-brand{
  display:flex;
  align-items:center;
  gap:.6rem;
  min-width:0;
}
.brand-icon{
  width:42px;height:42px;
  border-radius:12px;
  background:linear-gradient(145deg,#D6B370,#8C6A3A);
  color:#0A0E10;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  flex:0 0 42px;
  box-shadow:0 4px 14px rgba(179,135,74,.3);
}
.brand-text{
  font-weight:800;
  color:#fff;
  font-size:1.14rem;
  letter-spacing:0;
  line-height:1.2;
  white-space:nowrap;
}
.brand-text .brand-sub{
  display:block;
  font-size:.74rem;
  color:rgba(255,255,255,.65);
  font-weight:500;
  letter-spacing:.08em;
  margin-top:1px;
}
.brand-verify{
  font-size:11px;
  color:var(--gold);
  border:1px solid rgba(214,179,112,.45);
  background:rgba(214,179,112,.08);
  border-radius:999px;
  padding:.1rem .5rem;
  white-space:nowrap;
}
.header-nav-links{
  display:flex;
  align-items:center;
  gap:1.6rem;
}
.header-nav-links .nav-item{
  color:rgba(255,255,255,.82);
  font-weight:500;
  font-size:.96rem;
  position:relative;
  padding:.35rem 0;
  transition:color .25s ease;
}
.header-nav-links .nav-item::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:0;
  height:2px;
  background:var(--gold);
  border-radius:2px;
  transition:width .25s ease;
}
.header-nav-links .nav-item:hover,.header-nav-links .nav-item.current{color:#fff}
.header-nav-links .nav-item:hover::after,.header-nav-links .nav-item.current::after{width:100%}
.header-actions{
  display:flex;
  align-items:center;
  gap:.85rem;
}
.status-badge{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  color:rgba(255,255,255,.88);
  font-size:.82rem;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:999px;
  padding:.18rem .72rem;
  white-space:nowrap;
}
.status-badge .status-dot{
  width:7px;height:7px;
  background:var(--gold);
  border-radius:50%;
  box-shadow:0 0 0 3px rgba(214,179,112,.24);
  animation:pulseDot 2s infinite;
}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 2px rgba(214,179,112,.18)}50%{box-shadow:0 0 0 5px rgba(214,179,112,.06)}}
.header-download-btn{
  font-size:.88rem;
  padding:.45rem 1rem;
  color:#0A0E10;
  background:linear-gradient(120deg,#E4C588,#B3874A);
  border-radius:var(--radius-sm);
  font-weight:700;
  border:1px solid rgba(179,135,74,.8);
  transition:var(--transition);
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  gap:.35rem;
}
.header-download-btn:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(179,135,74,.32);
  background:linear-gradient(120deg,#EDD19B,#C0965B);
}
.nav-toggle{
  display:none;
  background:transparent;
  border:0;
  flex-direction:column;
  gap:5px;
  padding:.4rem .2rem;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  width:24px;height:2px;
  background:#fff;
  border-radius:2px;
  display:block;
}
.mobile-menu{
  position:fixed;
  top:72px;
  left:0;right:0;
  background:#0D1215;
  border-bottom:1px solid rgba(255,255,255,.08);
  z-index:1100;
  box-shadow:0 26px 40px rgba(0,0,0,.35);
}
.mobile-nav-inner{
  padding:1.2rem 1.4rem 1.4rem;
  display:flex;
  flex-direction:column;
  gap:.2rem;
}
.mobile-nav-link{
  display:flex;
  align-items:center;
  padding:.8rem .4rem;
  color:rgba(255,255,255,.9);
  font-size:1rem;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-nav-link.current{color:var(--gold)}
.mobile-nav-link i{
  width:26px;
  color:var(--gold);
  font-size:14px;
}
.mobile-download-link{
  margin-top:1rem;
  display:block;
  text-align:center;
  background:linear-gradient(120deg,#D6B370,#B3874A);
  color:var(--carbon-deep);
  font-weight:700;
  padding:.75rem;
  border-radius:8px;
}

/* ===== base section ===== */
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-head{
  margin-bottom:48px;
  max-width:720px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-size:.86rem;
  font-weight:600;
  color:var(--copper);
  background:var(--gold-soft);
  padding:.25rem .9rem;
  border-radius:999px;
  margin-bottom:1rem;
  letter-spacing:.02em;
}
.section-title{
  font-size:2.15rem;
  margin-bottom:.8rem;
  letter-spacing:-.01em;
}
.section-desc{
  color:var(--text-muted);
  font-size:1rem;
}
.view-all-link{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  color:var(--copper);
  font-weight:600;
  font-size:.94rem;
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:var(--transition);
}
.view-all-link:hover{color:var(--copper);border-color:var(--copper)}
.bg-soft{background:var(--bg-soft)}
.bg-white{background:#fff}
.bg-carbon{background:var(--carbon)}
/* reveal */
.reveal.js-reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
.reveal.js-reveal.visible{opacity:1;transform:translateY(0)}

/* ===== hero ===== */
.hero{
  position:relative;
  background:var(--carbon-deep);
  color:#fff;
  overflow:hidden;
  padding:162px 0 92px;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(105deg,rgba(10,14,16,.94) 0%,rgba(10,14,16,.78) 42%,rgba(10,14,16,.55) 70%,rgba(10,14,16,.78) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  z-index:0;
}
.hero::after{
  content:"";
  position:absolute;
  left:-10%;
  top:-30%;
  width:460px;height:460px;
  background:radial-gradient(circle,rgba(214,179,112,.13),transparent 65%);
  z-index:0;
}
.hero .container{position:relative;z-index:1}
.hero-inner{
  display:flex;
  align-items:center;
  gap:58px;
}
.hero-copy{
  flex:0 0 57%;
  max-width:660px;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  color:var(--gold);
  border:1px solid rgba(214,179,112,.35);
  background:rgba(214,179,112,.08);
  border-radius:999px;
  padding:.24rem 1rem;
  font-size:.84rem;
  margin-bottom:1.4rem;
  letter-spacing:.04em;
}
.hero-title{
  color:#fff;
  font-size:2.9rem;
  line-height:1.24;
  font-weight:800;
  margin-bottom:1rem;
}
.hero-title .hero-sub-line{
  display:block;
  color:var(--gold);
  font-size:1.45rem;
  font-weight:700;
  margin-top:.3rem;
}
.hero-lead{
  font-size:1.1rem;
  color:rgba(255,255,255,.78);
  margin-bottom:1.6rem;
  letter-spacing:.02em;
}
.hero-feature-row{
  display:flex;
  flex-wrap:wrap;
  gap:.75rem;
  margin-bottom:1.8rem;
}
.hero-feature{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-size:.86rem;
  color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  border-radius:999px;
  padding:.25rem .85rem;
}
.hero-feature i{color:var(--gold);font-size:14px}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:1rem;
  margin-bottom:1.2rem;
}
.hero-safe{
  display:flex;
  align-items:center;
  gap:.4rem;
  font-size:.8rem;
  color:rgba(255,255,255,.52);
}
.hero-safe i{color:var(--gold)}
.hero-media{
  flex:1;
  position:relative;
  min-width:0;
}
.hero-visual{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  box-shadow:0 32px 70px rgba(0,0,0,.38);
  transform:rotate(1.2deg);
  border:1px solid rgba(214,179,112,.25);
  background:#0D1113;
}
.hero-visual img{
  width:100%;
  aspect-ratio:4/5;
  object-fit:cover;
}
.float-card{
  position:absolute;
  background:rgba(255,255,255,.95);
  color:var(--carbon);
  border-radius:14px;
  box-shadow:0 14px 34px rgba(0,0,0,.24);
  padding:.7rem 1rem;
  font-size:.83rem;
  font-weight:600;
  display:flex;
  align-items:center;
  gap:.55rem;
  backdrop-filter:blur(8px);
  animation:floatY 5s ease-in-out infinite;
}
.float-card i{color:var(--copper);font-size:1rem}
.float-card.fc-1{
  top:8%;
  right:-4%;
  z-index:3;
}
.float-card.fc-2{
  bottom:10%;
  left:-6%;
  z-index:3;
  animation-delay:1.6s;
}
.float-card .mini-stars{color:#D39A3D;letter-spacing:1px}
.float-card small{display:block;font-weight:500;color:var(--text-muted);font-size:.72rem}
@keyframes floatY{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}

/* ===== values ===== */
.value-section{background:#fff;padding:96px 0 72px}
.value-grid{
  --bs-gutter-y:2rem;
}
.value-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:1.7rem 1.6rem 1.5rem;
  height:100%;
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.value-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:3px;
  background:linear-gradient(90deg,var(--gold),transparent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .4s ease;
}
.value-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(179,135,74,.28);
}
.value-card:hover::before{transform:scaleX(1)}
.value-icon{
  width:50px;height:50px;
  border-radius:14px;
  background:var(--gold-soft);
  color:var(--copper);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.3rem;
  margin-bottom:1.2rem;
}
.value-title{
  font-size:1.1rem;
  margin-bottom:.35rem;
  color:var(--carbon);
}
.value-desc{
  color:var(--text-muted);
  font-size:.9rem;
  margin-bottom:0;
  line-height:1.75;
}
.value-card .value-line{
  width:34px;
  height:2px;
  background:var(--gold);
  margin-top:1.1rem;
  opacity:.7;
}
.value-offset .value-card{margin-top:34px}

/* ===== showcase ===== */
.showcase-section{
  position:relative;
  background:var(--carbon-deep);
  color:#fff;
  overflow:hidden;
  padding:96px 0 110px;
}
.showcase-section::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(10,14,16,.86),rgba(23,28,31,.82)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.28;
}
.showcase-section .container{position:relative;z-index:1}
.showcase-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.showcase-head .section-title{color:#fff;margin-bottom:.5rem}
.showcase-head .section-desc{color:rgba(255,255,255,.66);margin:0}
.showcase-demo{
  display:flex;
  gap:42px;
  align-items:center;
}
.demo-slider-wrap{
  flex:1;
  min-width:0;
}
.demo-screen-frame{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-xl);
  padding:14px;
}
.demo-main-screen{
  border-radius:16px;
  overflow:hidden;
  background:#111519;
  box-shadow:0 2px 10px rgba(0,0,0,.5);
}
.demo-main-screen img{
  width:100%;
  aspect-ratio:16/9.5;
  object-fit:cover;
}
.demo-caption{
  margin-top:.9rem;
  color:rgba(255,255,255,.72);
  font-size:.95rem;
  display:flex;
  align-items:center;
  gap:.4rem;
}
.demo-caption i{color:var(--gold)}
.demo-controls{
  margin-top:20px;
  display:flex;
  align-items:center;
  gap:12px;
}
.demo-arrow{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:var(--transition);
}
.demo-arrow:hover{
  background:var(--gold);
  color:var(--carbon-deep);
  border-color:var(--gold);
  transform:translateY(-2px);
}
.demo-thumbs-list{
  display:flex;
  gap:8px;
  align-items:center;
}
.demo-thumb{
  width:34px;height:20px;
  overflow:hidden;
  border-radius:4px;
  padding:0;
  border:1px solid rgba(255,255,255,.3);
  background:#fff;
  transition:var(--transition);
  opacity:.6;
}
.demo-thumb.active{border-color:var(--gold);opacity:1}
.demo-thumb img{width:100%;height:100%;object-fit:cover}
.demo-info-list{
  flex:0 0 260px;
  display:flex;
  flex-direction:column;
  gap:1rem;
}
.demo-info-item{
  border-left:3px solid var(--gold);
  background:rgba(255,255,255,.045);
  border-radius:0 12px 12px 0;
  padding:.9rem 1.2rem;
}
.demo-info-item h3{
  color:#fff;
  font-size:.98rem;
  margin-bottom:.2rem;
  display:flex;
  align-items:center;
  gap:.4rem;
}
.demo-info-item p{
  color:rgba(255,255,255,.64);
  font-size:.8rem;
  margin:0;
  line-height:1.7;
}

/* ===== steps ===== */
.steps-section{background:#fff;padding:96px 0}
.steps-row{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  position:relative;
}
.step-card{
  background:var(--bg-pale);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:28px 24px 24px;
  position:relative;
  transition:var(--transition);
}
.step-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
  background:#fff;
  border-color:rgba(179,135,74,.3);
}
.step-index{
  width:44px;height:44px;
  border-radius:50%;
  background:linear-gradient(135deg,#D6B370,#A8844F);
  color:var(--carbon-deep);
  font-weight:800;
  font-size:1rem;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:1.2rem;
  box-shadow:0 8px 18px rgba(179,135,74,.2);
}
.step-title{
  font-size:1.12rem;
  margin-bottom:.45rem;
}
.step-text{
  color:var(--text-muted);
  font-size:.9rem;
  line-height:1.8;
  margin:0;
}

/* ===== requirements ===== */
.require-section{
  background:var(--bg-soft);
  padding:96px 0;
}
.require-inner{
  display:grid;
  grid-template-columns:1.05fr 1.4fr;
  gap:56px;
  align-items:center;
}
.require-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-md);
  aspect-ratio:4/3;
}
.require-visual img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.require-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(240deg,rgba(179,135,74,.05),rgba(23,28,31,.25));
}
.require-title{
  font-size:2rem;
  margin-bottom:1rem;
}
.require-desc{
  margin-bottom:1.5rem;
  color:var(--text-muted);
}
.require-tips{
  list-style:none;
  padding:0;
  margin:0;
}
.require-tips li{
  padding-left:1.8rem;
  position:relative;
  margin-bottom:.65rem;
  font-size:.93rem;
}
.require-tips li::before{
  content:"\f058";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;
  color:var(--copper);
}
.spec-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:38px 36px;
}
.spec-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:28px;
  padding:1.1rem 0;
  border-bottom:1px solid var(--line);
}
.spec-row:first-child{padding-top:0}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-label{
  font-size:.88rem;
  color:var(--text-muted);
  letter-spacing:.02em;
}
.spec-value{
  text-align:right;
  font-weight:600;
  color:var(--carbon);
  font-size:.95rem;
}
.spec-size{
  white-space:nowrap;
  font-size:.72rem;
  color:var(--copper);
  border:1px solid rgba(179,135,74,.28);
  background:var(--gold-soft);
  padding:.05rem .5rem;
  border-radius:999px;
  margin-left:12px;
  font-weight:500;
}

/* ===== reviews ===== */
.review-section{background:#fff;padding:96px 0}
.review-featured{
  background:linear-gradient(135deg,rgba(244,243,240,.92),#fff);
  border:1px solid var(--line);
  border-left:3px solid var(--gold);
  border-radius:var(--radius-md);
  padding:1.8rem 2rem;
  margin-bottom:34px;
  display:flex;
  align-items:flex-start;
  gap:1.1rem;
  box-shadow:var(--shadow-sm);
}
.review-featured .review-quote-mark{
  font-size:2rem;
  color:var(--gold);
  line-height:1;
}
.review-featured p.review-text{
  font-size:1.05rem;
  color:var(--carbon);
  font-weight:500;
  margin-bottom:.7rem;
  max-width:980px;
}
.review-user-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.9rem;
  color:var(--text-muted);
  font-size:.84rem;
}
.avatar{
  width:40px;height:40px;
  border-radius:50%;
  object-fit:cover;
  overflow:hidden;
  background:#eee;
  flex:0 0 40px;
}
.review-user-meta .user-name{font-weight:600;color:var(--carbon)}
.verified-tag{
  font-size:.72rem;
  color:var(--success);
  border:1px solid rgba(47,143,91,.25);
  background:rgba(47,143,91,.06);
  padding:.05rem .55rem;
  border-radius:999px;
}
.stars{
  color:#D39A3D;
  letter-spacing:2px;
  font-size:.82rem;
}
.review-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.review-card{
  background:var(--bg-pale);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:1.5rem;
  transition:var(--transition);
}
.review-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(179,135,74,.3);
}
.review-card .stars{margin-bottom:.65rem;display:block}
.review-card p{
  font-size:.9rem;
  color:var(--text-body);
  margin-bottom:1.1rem;
  line-height:1.85;
}
.review-avatar {
  width:36px;height:36px;
  border-radius:50%;
  overflow:hidden;
  flex:0 0 36px;
}

/* ===== download cta ===== */
.download-section{
  position:relative;
  background:var(--carbon-deep);
  color:#fff;
  overflow:hidden;
  padding:76px 0;
}
.download-section::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(120deg,rgba(10,14,16,.94),rgba(10,14,16,.7)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.4;
}
.download-section .container{position:relative;z-index:1}
.download-inner{
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:48px;
  align-items:center;
}
.download-title{
  color:#fff;
  font-size:2rem;
  margin-bottom:.8rem;
}
.download-desc{
  color:rgba(255,255,255,.66);
  font-size:1rem;
  max-width:420px;
}
.download-panel{
  background:rgba(255,255,255,.96);
  border-radius:var(--radius-lg);
  box-shadow:0 32px 70px rgba(0,0,0,.3);
  padding:30px;
  color:var(--text-body);
}
.download-panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:22px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.download-panel-title{font-size:1.04rem;color:var(--carbon);font-weight:700}
.download-panel-title i{color:var(--copper);margin-right:.4rem}
.dl-version-badge{
  font-size:.76rem;
  color:var(--copper);
  border:1px solid var(--line-gold);
  background:var(--gold-soft);
  border-radius:999px;
  padding:.1rem .7rem;
  font-weight:600;
}
.dl-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
.dl-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--bg-pale);
  padding:16px 16px 13px;
  cursor:pointer;
  transition:var(--transition);
}
.dl-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:rgba(179,135,74,.4);
}
.dl-item-top{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:.84rem;
  color:var(--carbon);
  font-weight:700;
  margin-bottom:.15rem;
}
.dl-item-top i{
  color:var(--copper);
  font-size:1.3rem;
}
.dl-item small{
  color:var(--text-muted);
  display:block;
  font-size:.74rem;
}
.dl-item span.dl-tag{
  display:inline-block;
  margin-top:8px;
  font-size:.7rem;
  color:var(--copper);
  background:var(--gold-soft);
  padding:.06rem .5rem;
  border-radius:999px;
}
.download-note{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-top:20px;
  color:var(--text-muted);
  font-size:.76rem;
}
.download-note .safe-note i{color:var(--success)}
.dl-small-links a{
  color:var(--text-muted);
  font-size:.78rem;
  border-bottom:1px dashed rgba(64,71,77,.4);
  margin-left:1rem;
  transition:color .2s ease;
}
.dl-small-links a:hover{color:var(--copper);border-color:var(--copper)}

/* ===== news ===== */
.news-section{padding:96px 0;background:var(--bg-pale)}
.news-grid .news-item{
  margin-bottom:24px;
}
.news-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
  display:block;
  height:100%;
  transition:var(--transition);
}
.news-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
  border-color:rgba(179,135,74,.32);
}
.news-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#f0eee9;
}
.news-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-card-body{
  padding:.9rem 1.05rem 1rem;
}
.news-tag{
  display:inline-block;
  font-size:.7rem;
  color:var(--copper);
  background:var(--gold-soft);
  padding:.1rem .55rem;
  border-radius:999px;
  margin-bottom:.5rem;
  font-weight:600;
}
.news-title{
  font-size:.98rem;
  font-weight:700;
  line-height:1.5;
  margin-bottom:.25rem;
  color:var(--carbon);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-summary{
  color:var(--text-muted);
  font-size:.83rem;
  margin-bottom:.5rem;
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  color:var(--text-muted);
  font-size:.74rem;
}
.news-meta i{
  color:var(--copper);
  transition:transform .25s ease;
}
.news-card:hover .news-meta i{transform:translateX(4px)}
.news-empty{
  text-align:center;
  padding:50px 20px;
  background:#fff;
  border:1px dashed var(--line);
  border-radius:var(--radius-md);
  color:var(--text-muted);
}
.news-empty .empty-icon{
  width:56px;height:56px;
  border:2px dashed rgba(23,28,31,.16);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto .6rem;
  color:var(--copper);
  font-size:1.2rem;
}
/* cms list area */
.ph-item{
  display:none;
}

/* ===== faq section ===== */
.faq-section{
  background:var(--bg-soft);
  padding:96px 0;
}
.faq-wrap{
  display:grid;
  grid-template-columns:.8fr 1.5fr;
  gap:48px;
}
.faq-nav-list{
  display:flex;
  flex-direction:column;
  gap:.4rem;
  position:sticky;
  top:84px;
}
.faq-nav-btn{
  text-align:left;
  color:var(--text-body);
  background:transparent;
  border:0;
  border-left:2px solid rgba(23,28,31,.13);
  padding:.75rem 1rem .75rem 1.3rem;
  font-size:.95rem;
  font-weight:500;
  transition:var(--transition);
  width:100%;
  border-radius:0;
}
.faq-nav-btn:hover{color:var(--carbon)}
.faq-nav-btn.active{
  color:var(--copper);
  border-left-color:var(--gold);
  background:rgba(214,179,112,.08);
  border-radius:0 10px 10px 0;
  font-weight:700;
}
.faq-pane-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:34px 36px 8px;
  box-shadow:var(--shadow-sm);
  margin-bottom:18px;
}
.faq-pane-card h3{
  font-size:1.18rem;
  margin-bottom:.7rem;
  display:flex;
  align-items:center;
  gap:.7rem;
  color:var(--carbon);
}
.faq-pane-card h3 .faq-q-num{
  font-size:.9rem;
  color:var(--gold);
  border:1px solid rgba(179,135,74,.3);
  border-radius:8px;
  padding:.05rem .45rem;
  background:var(--gold-soft);
}
.faq-pane-card p{
  color:var(--text-muted);
  font-size:.95rem;
  padding-bottom:1.6rem;
  border-bottom:1px solid var(--line);
}

/* ===== cta band ===== */
.end-cta{
  background:#fff;
  padding:56px 0;
}
.end-cta-inner{
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(23,28,31,.96),rgba(23,28,31,.88)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#fff;
  padding:50px 60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  box-shadow:var(--shadow-lg);
}
.end-cta-title{
  font-size:1.65rem;
  color:#fff;
  margin-bottom:.35rem;
}
.end-cta-inner p{
  color:rgba(255,255,255,.67);
  margin-bottom:0;
}
.end-cta-btns{
  display:flex;
  flex-wrap:wrap;
  flex:0 0 auto;
  gap:12px;
}

/* ===== footer ===== */
.site-footer{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-row{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:48px;
}
.footer-brand-title{
  font-size:1.25rem;
  color:var(--carbon);
  font-weight:800;
  display:flex;
  align-items:center;
  gap:.7rem;
  margin-bottom:.7rem;
}
.footer-brand-title i{
  color:var(--copper);
}
.footer-desc{
  color:var(--text-muted);
  font-size:.88rem;
  max-width:340px;
}
.footer-column-title{
  font-size:1rem;
  font-weight:700;
  color:var(--carbon);
  margin-bottom:1.1rem;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-links li{
  padding:.35rem 0;
}
.footer-links a{
  color:var(--text-muted);
  font-size:.9rem;
  position:relative;
  transition:color .2s ease, padding-left .2s ease;
}
.footer-links a:hover{
  color:var(--copper);
  padding-left:5px;
}
.footer-bottom{
  border-top:1px solid var(--line);
  margin-top:48px;
  padding:20px 0 24px;
  display:flex;
  flex-wrap:wrap;
  gap:.4rem 1.4rem;
  justify-content:space-between;
  color:var(--text-muted);
  font-size:.8rem;
}
.footer-legacy{
  display:flex;
  gap:1rem;
  flex-wrap:wrap;
}

/* ===== responsive ===== */
@media (max-width:1199px){
  .hero-copy{flex:0 0 56%}
  .hero-title{font-size:2.45rem}
  .hero-title .hero-sub-line{font-size:1.2rem}
  .float-card.fc-1{right:-2%}
  .float-card.fc-2{left:0}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .section-title{font-size:1.7rem}
  .hero{padding:130px 0 66px}
  .hero-inner{flex-direction:column;gap:46px}
  .hero-copy{flex:0 0 auto;max-width:100%}
  .hero-media{max-width:420px;margin:0 auto}
  .hero-title{font-size:2.3rem}
  .showcase-head{flex-direction:column}
  .showcase-demo{flex-direction:column}
  .demo-info-list{flex:0 0 auto;flex-direction:row;flex-wrap:wrap}
  .demo-info-item{flex:1;min-width:200px}
  .value-offset .value-card{margin-top:0}
  .steps-row{grid-template-columns:1fr;gap:16px}
  .require-inner{
    grid-template-columns:1fr;
    gap:36px;
  }
  .spec-card{padding:24px 20px}
  .footer-row{grid-template-columns:1fr 1fr}
  .header-nav-desktop, .header-actions .status-badge{display:none}
  .nav-toggle{display:inline-flex}
  .footer-desc{max-width:100%}
  .review-grid{grid-template-columns:1fr 1fr}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .faq-nav-list{position:static;flex-direction:row;flex-wrap:wrap;gap:.6rem}
  .faq-nav-btn{border-left:0;border-bottom:2px solid rgba(23,28,31,.13);width:auto;padding:.3rem .7rem;border-radius:0;font-size:.9rem}
  .faq-nav-btn.active{border-radius:0;border-bottom-color:var(--gold);background:transparent}
  .end-cta-inner{flex-direction:column;text-align:center;align-items:center;padding:40px 26px}
  .download-inner{grid-template-columns:1fr}
  .download-desc{max-width:100%}
}
@media (max-width:767px){
  .section{padding:58px 0}
  .section-head{margin-bottom:34px}
  .section-title{font-size:1.5rem}
  .header-brand .brand-text{font-size:.98rem}
  .brand-verify{display:none}
  .hero{padding:118px 0 48px}
  .hero-title{font-size:1.75rem}
  .hero-title .hero-sub-line{font-size:1.03rem}
  .hero-lead{font-size:.96rem}
  .hero-feature-row{gap:.5rem}
  .hero-feature{font-size:.78rem;padding:.2rem .7rem}
  .hero-cta{gap:.7rem}
  .hero-cta .btn{width:100%}
  .hero-safe{font-size:.74rem}
  .float-card{font-size:.72rem;padding:.5rem .8rem}
  .float-card.fc-1{right:2%}
  .float-card.fc-2{left:2%;bottom:6%}
  .value-grid .col-sm-6{flex:0 0 auto;width:50%}
  .review-grid{grid-template-columns:1fr}
  .review-featured{flex-direction:column;padding:1.3rem}
  .dl-grid{grid-template-columns:1fr}
  .download-note{flex-direction:column;align-items:flex-start}
  .news-grid .col-md-6{flex:0 0 auto;width:50%}
  .faq-pane-card{padding:24px 20px 4px}
  .footer-row{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .brand-text{font-size:.88rem}
  .brand-text .brand-sub{font-size:.65rem}
  .status-badge{display:none!important}
  .value-grid .col-sm-6{width:100%}
  .news-grid .col-md-6{width:100%}
  .section-desc{font-size:.9rem}
  .spec-value{font-size:.84rem;display:flex;align-items:center;gap:6px;text-align:right}
  .spec-size{margin-left:0}
  .demo-thumbs-list{flex-wrap:wrap}
  .end-cta-btns{width:100%}
  .end-cta-btns .btn{width:100%;margin-bottom:.5rem}
  .footer-legacy{flex-direction:column;gap:.3rem}
}

/* roulang page: category1 */
:root {
    --carbon: #171C1F;
    --carbon-deep: #0A0E10;
    --carbon-soft: #232a2f;
    --bronze: #B3874A;
    --bronze-light: #D6B370;
    --bronze-deep: #916F38;
    --gold-wash: rgba(179, 135, 74, 0.12);
    --gold-ring: rgba(179, 135, 74, 0.25);
    --bg-soft: #F4F3F0;
    --bg-card: #FFFFFF;
    --text-main: #23282D;
    --text-sub: #5C636B;
    --text-muted: #8A9199;
    --line-main: rgba(23, 28, 31, 0.08);
    --line-soft: rgba(255, 255, 255, 0.1);
    --radius-btn: 6px;
    --radius-card: 12px;
    --radius-cover: 22px;
    --shadow-xs: 0 2px 4px rgba(23, 28, 31, 0.03);
    --shadow-card: 0 12px 28px rgba(23, 28, 31, 0.07), 0 2px 8px rgba(23, 28, 31, 0.04);
    --shadow-hover: 0 20px 36px rgba(23, 28, 31, 0.1), 0 4px 14px rgba(179, 135, 74, 0.08);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
  }
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-main);
    background: #FFFFFF;
    -webkit-font-smoothing: antialiased;
  }
  img {
    max-width: 100%;
    height: auto;
  }
  a {
    text-decoration: none;
  }
  .container {
    max-width: 1288px;
  }

  /* ===== 顶部导航 ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1040;
    width: 100%;
    background: rgba(23, 28, 31, 0.92);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.34s ease, box-shadow 0.34s ease;
  }
  .site-header.scrolled {
    background: rgba(10, 14, 16, 0.95);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding-top: 12px;
    padding-bottom: 12px;
    min-height: 72px;
    transition: min-height 0.3s ease;
  }
  .site-header.scrolled .header-inner {
    min-height: 62px;
  }
  .header-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    background: none;
    border: 0;
    padding: 0;
    text-align: left;
  }
  .header-brand:hover .brand-text {
    color: #fff;
  }
  .brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #14181A;
    background: linear-gradient(135deg, #D6B370 0%, #B3874A 100%);
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(179, 135, 74, 0.25);
    flex-shrink: 0;
  }
  .brand-text {
    display: flex;
    flex-direction: column;
    color: #FFFFFF;
    font-weight: 800;
    font-size: 1.1rem;
    line-height: 1.3;
    letter-spacing: 0.3px;
    transition: color 0.3s ease;
  }
  .brand-sub {
    font-size: 0.68rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.2px;
    margin-top: 2px;
  }
  .brand-verify {
    margin-left: 2px;
    background: linear-gradient(135deg, #D6B370, #B3874A);
    color: #0A0E10;
    font-size: 0.68rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
  }
  .header-nav-desktop {
    display: flex;
    align-items: center;
  }
  .header-nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    padding: 0;
    margin: 0;
  }
  .nav-item {
    display: inline-block;
    padding: 9px 16px;
    font-size: 0.92rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.72);
    border-radius: 6px;
    position: relative;
    transition: color 0.25s ease, background 0.25s ease;
  }
  .nav-item::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, #D6B370, #B3874A);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.28s var(--ease);
  }
  .nav-item:hover,
  .nav-item.current {
    color: #FFFFFF;
  }
  .nav-item:hover::after,
  .nav-item.current::after {
    transform: scaleX(1);
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .status-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.78rem;
    font-weight: 400;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 30px;
    padding: 4px 12px;
    white-space: nowrap;
  }
  .status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #D6B370;
    box-shadow: 0 0 0 3px rgba(214, 179, 112, 0.3);
  }
  .header-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: linear-gradient(135deg, #D6B370 0%, #B3874A 100%);
    color: #15181A;
    font-size: 0.86rem;
    font-weight: 700;
    padding: 9px 18px;
    border-radius: 6px;
    border: 0;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    white-space: nowrap;
  }
  .header-download-btn:hover {
    color: #0A0E10;
    transform: scale(1.03);
    box-shadow: 0 6px 20px rgba(179, 135, 74, 0.3);
  }
  .nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0;
  }
  .nav-toggle span {
    width: 18px;
    height: 2px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    transition: all 0.25s ease;
  }
  .mobile-menu {
    display: none;
    background: rgba(10, 14, 16, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 18px 0;
  }
  .mobile-menu.show {
    display: block;
  }
  .mobile-menu .container {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .mobile-menu .nav-item {
    font-size: 1.02rem;
    padding: 12px 8px;
    border-radius: 8px;
    display: block;
    color: rgba(255, 255, 255, 0.75);
  }
  .mobile-menu .nav-item.current,
  .mobile-menu .nav-item:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
  }

  /* ===== 主视觉 / 典型页头 ===== */
  .page-hero {
    position: relative;
    background: var(--carbon);
    color: #fff;
    overflow: hidden;
    padding: 84px 0 96px;
  }
  .hero-backdrop {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-position: center 34%;
    background-size: cover;
    opacity: 0.3;
    filter: grayscale(0.1);
  }
  .hero-backdrop::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10,14,16,0.55) 0%, rgba(23,28,31,0.8) 100%);
  }
  .page-hero-inner {
    position: relative;
    z-index: 2;
  }
  .breadcrumb-custom {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 26px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 30px;
    width: max-content;
    max-width: 100%;
  }
  .breadcrumb-custom a {
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.2s;
  }
  .breadcrumb-custom a:hover {
    color: var(--bronze-light);
  }
  .breadcrumb-custom i {
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.3);
  }
  .breadcrumb-custom .active {
    color: rgba(255, 255, 255, 0.8);
  }
  .hero-content {
    display: flex;
    align-items: center;
    gap: 64px;
  }
  .hero-copy {
    flex: 0 0 55%;
    max-width: 55%;
  }
  .hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--bronze-light);
    border: 1px solid rgba(214, 179, 112, 0.35);
    background: rgba(179, 135, 74, 0.12);
    padding: 5px 14px;
    border-radius: 24px;
    font-size: 0.82rem;
    letter-spacing: 0.4px;
    margin-bottom: 20px;
  }
  .hero-chip i {
    font-size: 0.75rem;
  }
  .hero-content h1 {
    font-size: clamp(2.3rem, 4vw, 3.6rem);
    font-weight: 900;
    line-height: 1.2;
    margin: 0 0 18px;
    color: #FFFFFF;
    letter-spacing: 0;
  }
  .hero-content h1 .hero-line {
    display: block;
    color: transparent;
    background: linear-gradient(100deg, #E2C889 0%, #D6B370 36%, #A87E44 100%);
    -webkit-background-clip: text;
    background-clip: text;
  }
  .hero-description {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.72);
    max-width: 480px;
    line-height: 1.9;
    margin-bottom: 28px;
  }
  .hero-indicators {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 32px;
  }
  .hero-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.13);
    padding: 6px 13px;
    border-radius: 24px;
  }
  .hero-indicator i {
    color: var(--bronze-light);
    font-size: 0.8rem;
  }
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
  }
  .btn-primary-hero {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    background: linear-gradient(135deg, #D6B370 0%, #B3874A 100%);
    color: #15181A;
    border: 0;
    font-weight: 700;
    font-size: 0.98rem;
    padding: 14px 28px;
    border-radius: 6px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    box-shadow: 0 6px 16px rgba(179, 135, 74, 0.2);
  }
  .btn-primary-hero:hover {
    color: #0A0E10;
    transform: scale(0.98);
    box-shadow: 0 9px 25px rgba(179, 135, 74, 0.32);
  }
  .btn-ghost-hero {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.28);
    font-weight: 500;
    font-size: 0.98rem;
    padding: 14px 25px;
    border-radius: 6px;
    transition: all 0.2s ease;
  }
  .btn-ghost-hero:hover {
    border-color: var(--bronze-light);
    color: var(--bronze-light);
    transform: translateY(-1px);
  }
  .secure-note {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: -6px;
  }
  .secure-note i {
    color: var(--bronze-light);
  }
  .hero-shot {
    flex: 0 0 38%;
    max-width: 38%;
    position: relative;
  }
  .hero-shot-inner {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 26px;
    padding: 15px;
    transform: perspective(1000px) rotateY(-3deg) rotateX(1deg);
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: transform 0.45s var(--ease);
  }
  .hero-shot-inner:hover {
    transform: perspective(1000px) rotateY(0deg);
  }
  .hero-shot-inner img {
    display: block;
    width: 100%;
    border-radius: 18px;
  }
  .shot-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 6px 4px;
  }
  .shot-status span {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.72rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .shot-status i {
    color: var(--bronze-light);
  }

  /* ===== 公共 section 样式 ===== */
  .section-block {
    padding: 96px 0;
  }
  .section-bg-soft {
    background: var(--bg-soft);
  }
  .section-head {
    text-align: center;
    max-width: 660px;
    margin: 0 auto 64px;
  }
  .section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--bronze);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-bottom: 10px;
  }
  .section-head h2 {
    font-size: clamp(1.6rem, 2.6vw, 2.3rem);
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 14px;
    line-height: 1.3;
  }
  .section-head p {
    display: block;
    color: var(--text-sub);
    font-size: 0.97rem;
    line-height: 1.9;
    margin: 0;
  }

  /* ===== 平台下载卡片 ===== */
  .download-panel {
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--line-main);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    height: 100%;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }
  .download-panel:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(179, 135, 74, 0.3);
  }
  .platform-head {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 18px;
  }
  .platform-icon {
    width: 58px;
    height: 58px;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    background: var(--gold-wash);
    color: var(--bronze);
    border: 1px solid rgba(179, 135, 74, 0.15);
    flex-shrink: 0;
  }
  .platform-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 2px;
  }
  .platform-version {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .version-tag {
    display: inline-block;
    background: var(--gold-wash);
    color: var(--bronze);
    border-radius: 12px;
    padding: 1px 10px;
    font-weight: 600;
    font-size: 0.72rem;
  }
  .platform-desc {
    color: var(--text-sub);
    font-size: 0.92rem;
    line-height: 1.8;
    border-top: 1px dashed var(--line-main);
    margin: 0 0 18px;
    padding-top: 16px;
  }
  .platform-desc li {
    list-style: none;
    margin-bottom: 4px;
    display: flex;
    gap: 8px;
  }
  .platform-desc li i {
    color: var(--bronze);
    font-size: 0.8rem;
    margin-top: 5px;
  }
  .platform-action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
  }
  .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #171C1F 0%, #2B3238 100%);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 26px;
    border-radius: 6px;
    transition: all 0.2s ease;
  }
  .btn-download:hover {
    color: #fff;
    background: var(--carbon-soft);
    transform: scale(0.98);
    box-shadow: 0 8px 20px rgba(23, 28, 31, 0.2);
  }
  .btn-download-gold {
    background: linear-gradient(135deg, #D6B370 0%, #B3874A 100%);
    color: #15181A;
  }
  .btn-download-gold:hover {
    background: linear-gradient(135deg, #E0C183 0%, #B3874A 100%);
    color: #15181A;
  }
  .platform-note {
    font-size: 0.82rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .alternative-links {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--text-muted);
  }
  .alternative-links a {
    color: var(--text-sub);
    border-bottom: 1px dashed transparent;
    transition: color 0.2s;
  }
  .alternative-links a:hover {
    color: var(--bronze);
    border-bottom-color: var(--bronze);
  }

  /* ===== 安装要求板块 ===== */
  .requirements-main {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
    align-items: center;
  }
  .req-copy h2 {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    font-weight: 800;
    margin-bottom: 16px;
  }
  .req-copy p {
    color: var(--text-sub);
    font-size: 0.95rem;
    line-height: 1.9;
    margin-bottom: 20px;
  }
  .req-labels {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }
  .req-label {
    background: #fff;
    border: 1px solid var(--line-main);
    border-radius: 4px;
    padding: 5px 10px;
    font-size: 0.78rem;
    color: var(--text-sub);
    box-shadow: var(--shadow-xs);
  }
  .req-card-list {
    background: #fff;
    border-radius: 18px;
    padding: 8px 28px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(23, 28, 31, 0.06);
  }
  .req-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    padding: 19px 0;
    border-bottom: 1px solid var(--line-main);
  }
  .req-item:last-child {
    border-bottom: 0;
  }
  .req-item-label {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text-main);
    flex: 0 0 88px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .req-item-label i {
    color: var(--bronze);
    width: 16px;
    font-size: 0.9rem;
  }
  .req-item-detail {
    flex: 1;
    text-align: right;
    font-size: 0.85rem;
    color: var(--text-sub);
    line-height: 1.6;
  }
  .req-item-detail strong {
    display: block;
    color: var(--text-main);
    font-weight: 600;
  }
  .req-item-detail span {
    font-size: 0.76rem;
    color: var(--text-muted);
  }
  .req-footnote {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.79rem;
    color: var(--text-muted);
    margin-top: 26px;
  }
  .req-footnote i {
    color: var(--bronze);
  }

  /* ===== 安装流程 ===== */
  .process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
    margin-top: 10px;
  }
  .process-steps::before {
    content: '';
    position: absolute;
    top: 27px;
    left: 13%;
    right: 13%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(179, 135, 74, 0.3), transparent);
  }
  .process-step {
    text-align: center;
    padding: 20px 12px;
    background: transparent;
  }
  .step-num {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #171C1F 0%, #2C3339 100%);
    color: #FFFFFF;
    font-weight: 700;
    font-size: 1.15rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    border: 3px solid var(--bronze);
    box-shadow: 0 0 0 5px rgba(179, 135, 74, 0.1), 0 8px 20px rgba(23, 28, 31, 0.12);
  }
  .process-step h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
  }
  .process-step p {
    font-size: 0.86rem;
    color: var(--text-sub);
    line-height: 1.8;
    max-width: 230px;
    margin: 0 auto;
  }

  /* ===== 使用场景 ===== */
  .scenario-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
  }
  .scenario-card {
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--line-main);
    overflow: hidden;
    display: flex;
    align-items: stretch;
    box-shadow: var(--shadow-card);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }
  .scenario-card:hover {
    transform: translateY(-3px);
    border-color: rgba(179, 135, 74, 0.35);
    box-shadow: var(--shadow-hover);
  }
  .scenario-img {
    width: 130px;
    flex-shrink: 0;
    background: var(--bg-soft);
    overflow: hidden;
    position: relative;
  }
  .scenario-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .scenario-body {
    padding: 22px 20px;
  }
  .scenario-body h3 {
    font-size: 1.02rem;
    font-weight: 700;
    margin-bottom: 7px;
    color: var(--text-main);
  }
  .scenario-body p {
    font-size: 0.86rem;
    color: var(--text-sub);
    line-height: 1.8;
    margin-bottom: 10px;
  }
  .scenario-body a {
    font-size: 0.8rem;
    color: var(--bronze);
    font-weight: 500;
  }
  .scenario-body a i {
    font-size: 0.7rem;
    transition: margin-left 0.2s ease;
  }
  .scenario-body a:hover i {
    margin-left: 3px;
  }

  /* ===== FAQ ===== */
  .faq-wrap {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 46px;
    align-items: start;
  }
  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .faq-tab-btn {
    width: 100%;
    text-align: left;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--line-main);
    border-radius: 10px;
    padding: 16px 18px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 6px;
  }
  .faq-tab-btn i {
    font-size: 0.78rem;
    color: var(--text-muted);
    transition: transform 0.2s ease;
  }
  .faq-tab-btn:hover {
    border-color: rgba(179, 135, 74, 0.4);
    color: var(--bronze);
  }
  .faq-tab-btn.active {
    background: var(--gold-wash);
    border-color: rgba(179, 135, 74, 0.35);
    color: var(--bronze);
    font-weight: 600;
  }
  .faq-tab-btn.active i {
    color: var(--bronze);
    transform: rotate(90deg);
  }
  .faq-answer-panel {
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--line-main);
    box-shadow: var(--shadow-card);
    padding: 30px 28px;
    min-height: 280px;
  }
  .faq-answer-item {
    display: none;
  }
  .faq-answer-item.active {
    display: block;
  }
  .faq-answer-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
  }
  .faq-answer-item p {
    font-size: 0.9rem;
    color: var(--text-sub);
    line-height: 1.9;
  }
  .faq-answer-item .faq-meta {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--line-main);
    font-size: 0.78rem;
    color: rgba(23, 28, 31, 0.45);
  }

  /* ===== CTA ===== */
  .cta-dark {
    position: relative;
    background: var(--carbon);
    color: #fff;
    padding: 70px 0;
    overflow: hidden;
  }
  .cta-dark::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-3.webp');
    background-position: center;
    background-size: cover;
    opacity: 0.14;
  }
  .cta-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
  }
  .cta-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 6px;
  }
  .cta-sub {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
  }
  .btn-cta-gold {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #D6B370 0%, #B3874A 100%);
    color: #15181A;
    font-size: 1rem;
    font-weight: 700;
    padding: 15px 34px;
    border-radius: 6px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    box-shadow: 0 8px 20px rgba(179, 135, 74, 0.2);
  }
  .btn-cta-gold:hover {
    color: #15181A;
    transform: scale(0.98);
    box-shadow: 0 12px 28px rgba(179, 135, 74, 0.35);
  }

  /* ===== 页脚 ===== */
  .site-footer {
    background: #fff;
    border-top: 1px solid var(--line-main);
    padding: 64px 0 22px;
  }
  .footer-row {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 1fr;
    gap: 42px;
    margin-bottom: 40px;
    padding-bottom: 36px;
    border-bottom: 1px solid var(--line-main);
  }
  .footer-brand-title {
    font-size: 1.08rem;
    font-weight: 800;
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 14px;
  }
  .footer-brand-title i {
    color: var(--bronze);
  }
  .footer-desc {
    font-size: 0.85rem;
    line-height: 1.85;
    color: var(--text-sub);
    max-width: 350px;
    margin-bottom: 0;
  }
  .footer-column-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
  }
  .footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .footer-links li {
    margin-bottom: 9px;
  }
  .footer-links a {
    color: var(--text-sub);
    font-size: 0.84rem;
    transition: color 0.2s ease, padding-left 0.2s ease;
  }
  .footer-links a:hover {
    color: var(--bronze);
    padding-left: 3px;
  }
  .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.78rem;
    color: var(--text-muted);
  }
  .footer-legacy {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
  }
  .footer-legacy span + span:before {
    content: '·';
    margin-right: 12px;
    color: rgba(23, 28, 31, 0.25);
  }

  /* ===== 响应式 ===== */
  @media (max-width: 991.98px) {
    .section-block {
      padding: 72px 0;
    }
    .header-nav-desktop {
      display: none;
    }
    .nav-toggle {
      display: inline-flex;
    }
    .mobile-menu {
      display: none;
    }
    .mobile-menu.show {
      display: block;
    }
    .header-actions .status-badge {
      display: none;
    }
    .hero-content {
      flex-direction: column;
      gap: 44px;
    }
    .hero-copy,
    .hero-shot {
      max-width: 100%;
      flex-basis: auto;
    }
    .hero-shot-inner {
      transform: none;
      max-width: 520px;
    }
    .requirements-main,
    .faq-wrap {
      grid-template-columns: 1fr;
      gap: 36px;
    }
    .footer-row {
      grid-template-columns: 1fr 1fr;
    }
  }
  @media (max-width: 767.98px) {
    .section-block {
      padding: 56px 0;
    }
    .section-head {
      margin-bottom: 40px;
    }
    .page-hero {
      padding: 48px 0 60px;
    }
    .brand-sub {
      display: none;
    }
    .brand-verify {
      display: none;
    }
    .header-download-btn span {
      display: none;
    }
    .header-download-btn {
      padding: 9px 13px;
    }
    .process-steps {
      grid-template-columns: 1fr;
      gap: 28px;
    }
    .process-steps::before {
      display: none;
    }
    .scenario-row {
      grid-template-columns: 1fr;
    }
    .scenario-card {
      flex-direction: column;
    }
    .scenario-img {
      width: 100%;
      height: 150px;
    }
    .download-panel {
      padding: 22px 16px;
    }
    .req-card-list {
      padding: 5px 18px;
    }
    .req-item {
      flex-direction: column;
      gap: 6px;
      padding: 16px 0;
    }
    .req-item-detail {
      text-align: left;
    }
    .footer-row {
      grid-template-columns: 1fr;
      gap: 30px;
    }
    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
    }
    .hero-content h1 {
      font-size: 2rem;
    }
    .btn-primary-hero,
    .btn-ghost-hero {
      width: 100%;
      justify-content: center;
    }
    .alternative-links {
      flex-direction: column;
      gap: 10px;
    }
    .cta-inner {
      flex-direction: column;
      align-items: flex-start;
    }
  }

/* roulang page: article */
:root {
  --color-ink: #0A0E10;
  --color-primary: #171C1F;
  --color-deep: #0A0E10;
  --color-accent: #B3874A;
  --color-accent-light: #D6B370;
  --color-body: #333A40;
  --color-muted: #6F767C;
  --color-soft: #F4F3F0;
  --color-white: #FFFFFF;
  --color-border: rgba(23, 28, 31, 0.1);
  --radius-card: 12px;
  --radius-image: 16px;
  --radius-btn: 6px;
  --space-section: 96px;
  --shadow-card: 0 8px 28px rgba(23, 28, 31, 0.07);
  --shadow-hover: 0 16px 34px rgba(23, 28, 31, 0.12);
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --header-height: 72px;
  --header-height-scroll: 60px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: #FBFBFA;
  color: var(--color-body);
  font-size: 15.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body.article-page { background: #FFFFFF; }
a { color: inherit; text-decoration: none; transition: color .2s ease, opacity .2s ease; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { margin: 0; color: var(--color-primary); line-height: 1.3; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.container {
  max-width: 1288px !important;
  padding-left: clamp(1.25rem, 4vw, 2rem);
  padding-right: clamp(1.25rem, 4vw, 2rem);
}
.btn { border: 0; border-radius: var(--radius-btn); }
.card { border: 0; border-radius: var(--radius-card); background: var(--color-white); box-shadow: var(--shadow-card); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(23, 28, 31, 0.05);
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 26px rgba(23, 28, 31, 0.07);
}
.header-inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: height .3s ease;
}
.site-header.scrolled .header-inner { height: var(--header-height-scroll); }
.header-brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  min-width: 0;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, #1B2023 0%, #0B0F12 100%);
  border-radius: 12px;
  color: #D9BD83;
  font-size: 1.05rem;
  flex-shrink: 0;
}
.brand-text {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.15;
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  white-space: nowrap;
}
.brand-sub {
  font-size: .7rem;
  font-weight: 400;
  color: var(--color-muted);
  margin-top: 3px;
  letter-spacing: 0;
}
.brand-verify {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .2rem .5rem;
  border: 1px solid rgba(211, 176, 125, 0.55);
  color: #a8813e;
  font-size: .68rem;
  font-weight: 600;
  border-radius: 30px;
  background: rgba(216, 181, 116, 0.08);
  margin-left: .25rem;
  white-space: nowrap;
}
.header-nav-desktop { display: block; }
.header-nav-links {
  display: flex;
  align-items: center;
  gap: .35rem;
}
.nav-item {
  position: relative;
  display: inline-block;
  padding: .5rem .85rem;
  font-weight: 500;
  color: var(--color-body);
  font-size: .94rem;
  border-radius: 6px;
  transition: color .2s ease, background .2s ease;
}
.nav-item:after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  border-radius: 3px;
  background: var(--color-accent);
  transition: width .25s ease;
}
.nav-item:hover, .nav-item:focus-visible,
.nav-item.current { color: var(--color-primary); background: rgba(23, 28, 31, 0.04); }
.nav-item:hover:after,
.nav-item:focus-visible:after,
.nav-item.current:after { width: 22px; }
.header-actions {
  display: flex;
  align-items: center;
  gap: .8rem;
  flex-shrink: 0;
}
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .65rem;
  border: 1px solid var(--color-border);
  border-radius: 30px;
  font-size: .75rem;
  color: #626a70;
  background: rgba(255, 255, 255, 0.6);
  white-space: nowrap;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #C49A48;
  box-shadow: 0 0 0 3px rgba(196, 154, 72, 0.14);
}
.header-download-btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .55rem 1.15rem;
  color: #171C1F;
  font-size: .9rem;
  font-weight: 600;
  background: linear-gradient(135deg, #D6B370 0%, #B3874A 100%);
  border-radius: 6px;
  box-shadow: 0 8px 18px rgba(179, 135, 74, 0.2);
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.header-download-btn:hover {
  transform: translateY(-1px);
  color: #0A0E10;
  box-shadow: 0 12px 26px rgba(179, 135, 74, 0.28);
}
.header-download-btn:active { transform: scale(0.97); }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 3px;
}
.mobile-menu {
  display: none;
  padding: 1rem clamp(1.25rem, 4vw, 2rem) 1.2rem;
  border-top: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.98);
}
.mobile-menu.show { display: block; }
.mobile-menu-nav { display: grid; gap: .2rem; }
.mobile-nav-item {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 .75rem;
  font-weight: 500;
  color: var(--color-body);
  border-radius: 8px;
}
.mobile-nav-item.current,
.mobile-nav-item:active { background: rgba(196, 154, 72, 0.12); color: #9A7431; }

.article-topbar {
  padding: 2.1rem 0 1.35rem;
  background: linear-gradient(135deg, rgba(10, 14, 16, 0.97), rgba(23, 28, 31, 0.93)), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .4rem;
  font-size: .84rem;
  color: rgba(255, 255, 255, 0.54);
  line-height: 1.5;
}
.breadcrumb-nav a {
  color: rgba(255, 255, 255, 0.86);
  transition: color .2s ease;
}
.breadcrumb-nav a:hover { color: var(--color-accent-light); }
.breadcrumb-nav .bc-sep { color: rgba(255, 255, 255, 0.3); font-style: normal; }
.breadcrumb-nav .bc-current {
  color: rgba(255, 255, 255, 0.84);
  max-width: 560px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-block;
}

.article-main-wrap { padding: 2.4rem 0 3rem; background: #FBFBFA; }
.reader-gap { margin-bottom: 2rem; }
.article-article-card {
  position: relative;
  background: #FFFFFF;
  border: 1px solid rgba(23, 28, 31, 0.07);
  border-radius: 18px;
  padding: clamp(1.5rem, 4vw, 3rem);
  box-shadow: 0 10px 38px rgba(23, 28, 31, 0.04);
}

.article-reading-block { margin-top: 1.6rem; }

.progress-track {
  width: 100%;
  height: 3px;
  border-radius: 4px;
  background: rgba(23, 28, 31, 0.06);
  overflow: hidden;
  margin-bottom: 1.8rem;
}
.progress-track span {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #B3874A, #D6B370);
  border-radius: 4px;
  transition: width .1s linear;
}

.article-header-box { margin-bottom: 1.8rem; }
.article-category-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .65rem;
  margin-bottom: 1rem;
}
.cat-mini-tag {
  display: inline-flex;
  align-items: center;
  padding: .28rem .72rem;
  background: rgba(179, 135, 74, 0.12);
  color: #a37a3c;
  border-radius: 30px;
  font-size: .78rem;
  font-weight: 600;
}
.article-header-box h1 {
  font-size: clamp(1.65rem, 3.5vw, 2.35rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #14191d;
  margin-bottom: 1.1rem;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .85rem;
  color: var(--color-muted);
  font-size: .82rem;
  border-top: 1px solid rgba(23, 28, 31, 0.06);
  padding-top: 1rem;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.article-meta a { color: #937343; }
.article-meta a:hover { color: var(--color-accent); }
.source-inline { color: #8e5c1d; font-weight: 500; }

.article-body-content {
  font-size: 17px;
  line-height: 1.95;
  color: #333A40;
  word-break: break-word;
}
.article-body-content p {
  margin: 0 0 1.45rem;
}
.article-body-content h2,
.article-body-content h3 {
  margin: 2.1rem 0 1rem;
  font-weight: 700;
  color: #111619;
}
.article-body-content h2 { font-size: 1.45rem; }
.article-body-content h3 { font-size: 1.2rem; }
.article-body-content h4 { font-size: 1.08rem; }
.article-body-content ul,
.article-body-content ol {
  padding-left: 1.35rem;
  margin: 0 0 1.5rem;
}
.article-body-content ul { list-style: disc; }
.article-body-content ol { list-style: decimal; }
.article-body-content li { margin-bottom: .35rem; }
.article-body-content blockquote {
  margin: 1.8rem 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid #C9A35E;
  background: #F8F6F1;
  color: #4D4B47;
  border-radius: 0 12px 12px 0;
}
.article-body-content img {
  border-radius: var(--radius-image);
  border: 1px solid rgba(23, 28, 31, 0.08);
  margin: 1.8rem auto;
}
.article-body-content a { color: #9A7431; text-decoration: underline; text-underline-offset: 3px; }
.article-body-content a:hover { color: var(--color-accent); }
.article-body-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6rem 0;
  font-size: .92rem;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
}
.article-body-content table th,
.article-body-content table td {
  padding: .75rem .9rem;
  border: 1px solid var(--color-border);
  text-align: left;
}
.article-body-content table th {
  background: #F4F3F0;
  color: #1D2327;
  font-weight: 600;
}
.article-body-content pre {
  background: #171C1F;
  color: #ECE7DE;
  border-radius: 12px;
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  font-family: "DIN Alternate", "SF Mono", Consolas, monospace;
  font-size: .92rem;
  margin: 1.8rem 0;
}

.article-not-found-card {
  text-align: center;
  padding: 5rem clamp(1.5rem, 5vw, 4rem);
  background: #FFFFFF;
  border-radius: 18px;
  border: 1px solid rgba(23, 28, 31, 0.06);
  box-shadow: var(--shadow-card);
}
.article-not-found-card .nf-icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(23, 28, 31, 0.2);
  border-radius: 50%;
  font-size: 1.6rem;
  color: var(--color-accent);
}
.article-not-found-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: .75rem;
}
.article-not-found-card p { color: var(--color-muted); margin-bottom: 1.6rem; }

.return-home-btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .7rem 1.4rem;
  background: #171C1F;
  color: #fff;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid #171C1F;
  transition: all .2s ease;
}
.return-home-btn:hover { color: #fff; background: #2A3136; transform: translateY(-1px); }

.article-aside-area { display: flex; flex-direction: column; gap: 1.2rem; }
.side-panel {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 1.35rem 1.4rem;
  box-shadow: 0 8px 18px rgba(23, 28, 31, 0.03);
}
.side-panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding-bottom: .95rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(23, 28, 31, 0.07);
}
.side-panel-title h3 { font-size: 1rem; font-weight: 700; }
.side-panel-title .panel-mark {
  font-size: .68rem;
  color: #8C6B34;
  background: rgba(179, 135, 74, 0.1);
  padding: .18rem .6rem;
  border-radius: 30px;
  font-weight: 600;
}
.side-app-cover {
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 1rem;
}
.side-app-cover img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid rgba(23, 28, 31, 0.06);
}
.side-download-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .65rem;
}
.side-platform-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .62rem .3rem;
  background: #F7F5F1;
  color: #2B2F33;
  font-size: .82rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: all .2s ease;
}
.side-platform-link:hover {
  background: rgba(211, 176, 125, 0.15);
  color: #886126;
  border-color: rgba(179, 135, 74, 0.25);
  transform: translateY(-1px);
}
.side-platform-link i { color: #B3874A; }
.side-help-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .78rem;
  color: var(--color-muted);
  margin-top: .6rem;
}
.side-help-link:hover { color: var(--color-accent); }
.side-version-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
  padding: .55rem 0;
  border-bottom: 1px dashed rgba(23, 28, 31, 0.08);
  font-size: .84rem;
}
.side-version-row:last-child { border-bottom: 0; }
.side-version-row .ver-name { color: var(--color-muted); }
.side-version-row .ver-value { font-weight: 700; color: #2B2F33; font-size: .86rem; }
.verify-tips { display: flex; flex-direction: column; gap: .65rem; }
.verify-tip {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .84rem;
  color: #4A4F54;
}
.verify-tip i { color: #B3874A; margin-top: .25rem; }

.suggest-section {
  padding: 2.5rem 0 2rem;
  border-top: 1px solid rgba(23, 28, 31, 0.05);
}
.suggest-block-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.3rem;
}
.suggest-block-title h2 {
  font-size: 1.25rem;
  font-weight: 700;
}
.suggest-sub-link {
  font-size: .82rem;
  color: var(--color-muted);
}
.suggest-sub-link:hover { color: var(--color-accent); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.related-grid-item {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  overflow: hidden;
  transition: all .22s ease;
}
.related-grid-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(179, 135, 74, 0.22);
}
.related-grid-thumb { overflow: hidden; }
.related-grid-thumb img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}
.related-grid-body { padding: 1rem; }
.related-cat-name {
  font-size: .72rem;
  display: inline-flex;
  align-items: center;
  color: #99763A;
  background: rgba(211, 176, 125, 0.12);
  padding: .16rem .55rem;
  border-radius: 30px;
  margin-bottom: .55rem;
}
.related-grid-body h3 {
  font-size: .96rem;
  font-weight: 600;
  line-height: 1.5;
  color: #20262A;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-empty {
  border: 1px dashed rgba(23, 28, 31, 0.16);
  border-radius: 14px;
  padding: 2rem;
  text-align: center;
  color: var(--color-muted);
  background: #FDFCFA;
}
.related-empty i { font-size: 1.3rem; color: #C7AE82; margin-bottom: .5rem; }
.related-empty p { margin: .2rem 0; font-size: .9rem; }

.return-category-foot { margin-top: 1.25rem; text-align: center; }
.return-category-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-width: 280px;
  padding: .85rem 1.8rem;
  background: transparent;
  border: 1px solid rgba(23, 28, 31, 0.2);
  color: #22292F;
  border-radius: 8px;
  font-weight: 600;
  font-size: .94rem;
  transition: all .2s ease;
}
.return-category-btn:hover {
  background: #171C1F;
  border-color: #171C1F;
  color: #fff;
  transform: translateY(-2px);
}

.article-bottom-cta {
  margin: 1.5rem 0 2.8rem;
  border-radius: 18px;
  padding: 2.2rem clamp(1.4rem, 5vw, 3rem);
  background: linear-gradient(145deg, #171C1F 0%, #0B0E11 100%), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  color: #fff;
  color: rgba(255,255,255,.9);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.06);
}
.article-bottom-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 12% 30%, rgba(179,135,74,.12), transparent 36%);
  pointer-events: none;
}
.cta-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.cta-line h2 {
  color: #fff;
  font-size: 1.35rem;
  margin-bottom: .4rem;
  font-weight: 700;
}
.cta-line p {
  max-width: 620px;
  margin-bottom: 0;
  color: rgba(255,255,255,.62);
  font-size: .9rem;
}
.cta-inline-btns { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; position: relative; z-index: 2; }
.cta-dark-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: linear-gradient(135deg, #D6B370, #B3874A);
  color: #171C1F;
  font-weight: 600;
  font-size: .9rem;
  padding: .7rem 1.4rem;
  border-radius: 6px;
  transition: all .2s ease;
}
.cta-dark-btn:hover { color: #101417; transform: translateY(-1px); box-shadow: 0 9px 22px rgba(179,135,74,.22); }
.cta-ghost-inline {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .68rem 1.1rem;
  color: rgba(255,255,255,.8);
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 6px;
  font-size: .84rem;
  transition: all .2s ease;
}
.cta-ghost-inline:hover { color: #fff; border-color: rgba(255,255,255,.55); }

.site-footer {
  background: #F4F3F0;
  border-top: 1px solid rgba(23, 28, 31, 0.07);
  padding: 3.4rem 0 1.8rem;
  margin-top: 0;
}
.footer-row {
  display: grid;
  grid-template-columns: 2.6fr 1.1fr 1.35fr;
  gap: 2.8rem;
  padding-bottom: 2.2rem;
  border-bottom: 1px solid rgba(23, 28, 31, 0.08);
}
.footer-brand-title {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: #141A1D;
}
.footer-brand-title i { color: #B3874A; font-size: 1.05rem; }
.footer-desc {
  margin-top: .8rem;
  color: var(--color-muted);
  font-size: .88rem;
  line-height: 1.8;
  max-width: 430px;
}
.footer-column-title {
  font-size: .95rem;
  font-weight: 700;
  color: #20262A;
  margin-bottom: 1rem;
  padding-bottom: .25rem;
}
.footer-links { display: flex; flex-direction: column; gap: .55rem; }
.footer-links a {
  color: var(--color-muted);
  font-size: .85rem;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  transition: all .2s ease;
}
.footer-links a:hover { color: #9A7431; transform: translateX(2px); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
  flex-wrap: wrap;
  padding-top: 1.6rem;
  color: #868D92;
  font-size: .8rem;
}
.footer-legacy { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }

@media (max-width: 1199.98px) {
  .brand-text { font-size: 1rem; }
  .brand-sub { font-size: .64rem; }
  .nav-item { padding: .5rem .62rem; font-size: .9rem; }
  .status-badge { display: none; }
  .header-download-btn { padding: .55rem 1rem; }
}
@media (max-width: 991.98px) {
  :root { --space-section: 64px; }
  .header-nav-desktop { display: none; }
  .nav-toggle { display: inline-flex; }
  .article-main-wrap { padding: 1.4rem 0; }
  .footer-row { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767.98px) {
  .footer-row { grid-template-columns: 1fr; gap: 1.6rem; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .article-article-card { padding: 1.5rem 1.25rem; }
  .article-body-content { font-size: 16px; line-height: 1.85; }
  .cta-line { flex-direction: column; align-items: flex-start; }
  .article-bottom-cta { padding: 1.8rem 1.3rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 575.98px) {
  :root { --space-section: 48px; }
  .header-inner { height: 64px; }
  .site-header.scrolled .header-inner { height: 56px; }
  .brand-icon { width: 34px; height: 34px; border-radius: 10px; font-size: .9rem; }
  .brand-text { font-size: .92rem; }
  .brand-sub { display: none; }
  .brand-verify { display: none; }
  .header-download-btn span { display: none; }
  .header-download-btn { padding: .5rem .8rem; font-size: .84rem; }
  .related-grid { grid-template-columns: 1fr; }
  .side-download-pair { grid-template-columns: 1fr 1fr; }
}

/* roulang page: category2 */
:root{
  --ink:#171C1F;
  --ink-deep:#0A0E10;
  --gold:#B3874A;
  --gold-light:#D6B370;
  --text:#40474D;
  --text-muted:#7A8188;
  --bg:#F4F3F0;
  --card:#FFFFFF;
  --border:rgba(23,28,31,.1);
  --radius:12px;
  --radius-lg:20px;
  --radius-pill:40px;
  --shadow-sm:0 6px 20px rgba(10,14,16,.05);
  --shadow-md:0 14px 36px rgba(10,14,16,.08);
  --shadow-hover:0 18px 42px rgba(10,14,16,.14);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  font-size:15px;
  line-height:1.8;
  color:var(--text);
  background:#FBFaf8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;transition:color .2s ease;}
a:hover{color:var(--gold);}
button,input{font-family:inherit;}
ul,ol{list-style:none;}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;line-height:1.4;}
.container{max-width:1288px;margin:0 auto;padding-left:24px;padding-right:24px;}
main{overflow:hidden;}

:focus-visible{outline:2px solid var(--gold-light);outline-offset:3px;border-radius:4px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:6px;padding:13px 26px;font-size:15px;font-weight:600;
  line-height:1.4;border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:scale(.98);}
.btn-primary{
  background:var(--gold);color:#161A1C;border-color:var(--gold);
  box-shadow:0 8px 22px rgba(179,135,74,.24);
}
.btn-primary:hover{
  background:var(--gold-light);border-color:var(--gold-light);color:#161A1C;
  box-shadow:0 12px 30px rgba(179,135,74,.32);
}
.btn-ghost{
  border-color:var(--border);background:var(--card);color:var(--ink);
}
.btn-ghost:hover{
  border-color:var(--gold);color:var(--gold);background:#fffdfb;
}
.btn-glow{
  color:#191D1F;background:linear-gradient(135deg,#d6b370 0%,#b3874a 100%);
  border-radius:6px;padding:14px 32px;font-size:16px;
}
.btn-glow:hover{background:linear-gradient(135deg,#e2c683 0%,#bd9154 100%);color:#0A0E10;}

.site-header{
  width:100%;
  position:sticky;top:0;z-index:1050;
  background:rgba(10,14,16,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{
  background:rgba(10,14,16,.94);
  box-shadow:0 12px 30px rgba(0,0,0,.16);
}
.header-inner{
  height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height .25s ease;
}
.site-header.scrolled .header-inner{height:60px;}
.header-brand{
  display:inline-flex;align-items:center;gap:10px;min-width:0;
  color:#fff;
}
.brand-icon{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  background:linear-gradient(135deg,#d6b370,#a3783f);
  display:inline-flex;align-items:center;justify-content:center;
  color:#0A0E10;font-size:17px;
}
.brand-text{
  display:flex;flex-direction:column;line-height:1.2;min-width:0;
}
.brand-text>span:first-child{
  font-weight:800;font-size:17px;letter-spacing:.2px;color:#fff;white-space:nowrap;
}
.brand-sub{font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.3px;}
.brand-verify{
  font-size:11px;line-height:1;padding:5px 8px;border-radius:6px;
  color:#f3d9a2;border:1px solid rgba(214,179,112,.45);background:rgba(214,179,112,.08);
  margin-left:4px;white-space:nowrap;
}
.header-nav-desktop{display:flex;align-items:center;}
.header-nav-links{display:flex;align-items:center;gap:32px;}
.nav-item{
  position:relative;color:rgba(255,255,255,.78);font-size:14.5px;font-weight:500;
  padding:8px 0;white-space:nowrap;
}
.nav-item::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--gold);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
}
.nav-item:hover{color:#fff;}
.nav-item:hover::after{transform:scaleX(1);}
.nav-item.current{color:#fff;font-weight:700;}
.nav-item.current::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.status-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;color:rgba(255,255,255,.68);
  background:rgba(255,255,255,.06);border-radius:30px;padding:5px 12px;
}
.status-dot{
  width:6px;height:6px;border-radius:50%;background:#e2b46b;
  box-shadow:0 0 0 3px rgba(226,180,107,.16);
}
.header-download-btn{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--gold);color:#171b1d;font-weight:700;font-size:14px;
  border-radius:6px;padding:9px 18px;transition:background .2s,color .2s,box-shadow .2s,transform .18s;
}
.header-download-btn:hover{background:var(--gold-light);color:#0A0E10;transform:translateY(-1px);box-shadow:0 8px 20px rgba(179,135,74,.28);}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border:1px solid rgba(255,255,255,.16);border-radius:8px;
  background:rgba(255,255,255,.04);padding:9px;cursor:pointer;
  outline:none;
}
.nav-toggle span{display:block;height:2px;width:100%;background:#fff;border-radius:2px;}
.mobile-menu{
  border-top:1px solid rgba(255,255,255,.06);
  background:rgba(10,14,16,.97);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
}
.mobile-menu-panel{padding:16px 24px 24px;display:flex;flex-direction:column;gap:6px;}
.mobile-menu-panel a{
  color:rgba(255,255,255,.82);font-size:15px;font-weight:500;
  padding:11px 8px;border-radius:8px;
}
.mobile-menu-panel a:hover{border-color:transparent;color:#fff;background:rgba(255,255,255,.05);}
.mobile-menu-panel a.current{color:var(--gold);}
.mobile-menu-cta{margin-top:12px;padding-top:12px;border-top:1px solid rgba(255,255,255,.09);}
.mobile-menu-cta .btn{width:100%;}

.help-hero{
  background:linear-gradient(180deg,#f3f1ec 0%,#fbfaf8 100%);
  padding:46px 0 38px;
}
.breadcrumb-custom{
  margin-bottom:26px;
}
.breadcrumb-custom ol{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.breadcrumb-custom li{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:13px;}
.breadcrumb-custom li+li::before{content:"/";color:#c4beb5;font-size:12px;}
.breadcrumb-custom a{color:var(--text-muted);}
.breadcrumb-custom a:hover{color:var(--gold);}
.breadcrumb-custom li[aria-current="page"]{color:var(--ink);font-weight:600;}

.help-hero-grid{
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:42px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--gold);font-size:13px;font-weight:700;letter-spacing:.2px;
  background:rgba(179,135,74,.1);border:1px solid rgba(179,135,74,.2);
  padding:5px 12px;border-radius:30px;margin-bottom:18px;
}
.hero-eyebrow i{color:var(--gold);}
.help-hero-content h1{
  font-size:36px;line-height:1.25;font-weight:800;letter-spacing:.5px;color:var(--ink-deep);
  margin-bottom:16px;
}
.help-hero-content h1 span{color:var(--gold);}
.help-hero-lead{
  max-width:620px;color:#565e65;font-size:16px;line-height:1.9;margin-bottom:18px;
}
.help-hero-tags{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:#4d565c;background:#fff;border:1px solid var(--border);
  border-radius:30px;padding:6px 13px;
}
.hero-tag i{color:var(--gold);}
.help-hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.help-hero-media{position:relative;}
.help-hero-imgwrap{
  border-radius:20px;overflow:hidden;position:relative;
  box-shadow:var(--shadow-md);
  border:1px solid rgba(255,255,255,.7);
}
.help-hero-imgwrap::after{
  content:"";position:absolute;inset:0;border-radius:20px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5);
  pointer-events:none;
}
.help-hero-imgwrap img{width:100%;height:340px;object-fit:cover;}
.hero-float-tip{
  position:absolute;left:-16px;bottom:18px;
  background:#fff;border-radius:10px;box-shadow:var(--shadow-hover);
  display:flex;align-items:center;gap:8px;padding:9px 14px;
  font-size:13px;color:var(--ink);border:1px solid var(--border);
}
.hero-float-tip i{color:#7aa777;}

.topic-section{padding:46px 0 10px;}
.topic-card-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.topic-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:22px;transition:transform .25s,box-shadow .25s,border-color .25s;
  position:relative;overflow:hidden;
}
.topic-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--gold-light),var(--gold));
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.topic-card:hover{
  transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(179,135,74,.3);
}
.topic-card:hover::before{transform:scaleX(1);}
.topic-icon{
  width:42px;height:42px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;color:#090d0e;background:#edf0ee;border:1px solid rgba(23,28,31,.06);
}
.topic-card-download .topic-icon{background:rgba(179,135,74,.15);color:#8f6b33;}
.topic-card-login .topic-icon{background:rgba(84,132,157,.14);color:#3c6c84;}
.topic-card-version .topic-icon{background:rgba(92,132,87,.14);color:#4e7e49;}
.topic-card h2{font-size:17px;margin:4px 0 0;}
.topic-card p{font-size:13.5px;color:var(--text-muted);margin:0;}
.topic-card-link{
  margin-top:8px;font-size:13px;font-weight:600;color:var(--gold);
  display:inline-flex;align-items:center;gap:6px;
}
.topic-card:hover .topic-card-link i{transform:translateX(4px);transition:transform .25s;}
.topic-card-link i{transition:transform .25s;}

.help-doc-section{padding:46px 0 30px;}
.section-heading{margin-bottom:28px;}
.section-heading .small-kicker{
  font-size:13px;color:var(--gold);font-weight:700;text-transform:unset;margin-bottom:8px;
}
.section-heading h2{font-size:27px;font-weight:800;color:var(--ink-deep);margin-bottom:8px;}
.section-heading p{color:var(--text-muted);font-size:14px;margin:0;max-width:680px;}
.help-grid{
  display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:34px;
  align-items:start;
}
.help-accordion-col{display:flex;flex-direction:column;gap:28px;}

.help-group{
  border-radius:16px;padding:26px;border:1px solid var(--border);
  transition:border-color .2s ease;
}
.help-group.level-1{background:#ffffff;}
.help-group.level-2{background:#fcf9f5;}
.help-group.level-3{background:#f3f0ec;}
.help-group:hover{border-color:rgba(179,135,74,.28);}
.group-head{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px;
}
.group-step{
  font-size:16px;font-weight:800;color:#6f7680;border:1px solid var(--border);
  background:#fff;border-radius:8px;width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;line-height:1;
}
.level-1 .group-step{color:var(--gold);}
.group-head h2{font-size:18px;margin:0;font-weight:700;}
.group-label{
  margin-left:auto;font-size:12px;color:var(--text-muted);
  background:#fff;border:1px solid var(--border);border-radius:20px;padding:3px 10px;
}

.help-accordion .accordion-item{
  border:0;border-top:1px dashed rgba(23,28,31,.14);
  background:transparent;border-radius:0 !important;
  margin:0;
}
.help-accordion .accordion-item:first-of-type{border-top:0;}
.help-accordion .accordion-header{border:0;background:transparent;}
.help-accordion .accordion-button{
  background:transparent;border:0;box-shadow:none;
  color:var(--ink);font-size:15px;font-weight:600;font-family:inherit;
  padding:17px 38px 17px 0;position:relative;line-height:1.7;
}
.help-accordion .accordion-button::after{
  display:none;
}
.help-accordion .accordion-button::before{
  content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:4px;top:50%;width:auto;height:auto;
  margin:0;transform:translateY(-50%);color:var(--gold);font-size:15px;
  transition:transform .25s ease;
}
.help-accordion .accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(180deg);}
.help-accordion .accordion-button:not(.collapsed){
  color:var(--gold);background:transparent;box-shadow:none;
}
.help-accordion .accordion-button:hover{color:var(--gold);background:rgba(179,135,74,.03);}
.help-accordion .accordion-body{
  padding:0 32px 18px 0;font-size:14.5px;color:#51585e;line-height:1.9;
}
.help-accordion .accordion-body p{margin:0;}

.help-sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px;min-width:0;}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:20px;box-shadow:var(--shadow-sm);
}
.side-card-title{
  display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;
  color:var(--ink-deep);margin-bottom:14px;
}
.side-card-title i{color:var(--gold);font-size:15px;}
.side-version-num{
  font-size:24px;font-weight:800;color:var(--gold);letter-spacing:.5px;
  margin-bottom:14px;line-height:1.2;
}
.side-specs{margin:0;display:flex;flex-direction:column;}
.side-specs li{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:8px 0;border-bottom:1px dashed rgba(23,28,31,.1);
  font-size:13.5px;
}
.side-specs li:first-child{padding-top:0;}
.side-specs li:last-child{border-bottom:0;padding-bottom:0;}
.side-specs span{color:var(--text-muted);}
.side-specs b{color:var(--ink);font-weight:600;text-align:right;}

.status-list{display:flex;flex-direction:column;gap:10px;}
.status-item{
  display:flex;align-items:center;gap:8px;font-size:13px;color:#4a5056;
  background:#f9f8f6;border:1px solid rgba(23,28,31,.06);border-radius:7px;
  padding:7px 10px;
}
.status-item .dot{width:6px;height:6px;border-radius:50%;flex:0 0 6px;}
.dot-ok{background:#7aa777;box-shadow:0 0 0 3px rgba(122,167,119,.14);}
.dot-gold{background:#d6b370;box-shadow:0 0 0 3px rgba(214,179,112,.16);}
.dot-muted{background:#9aa0a6;box-shadow:0 0 0 3px rgba(154,160,166,.14);}

.side-related-links{display:flex;flex-direction:column;gap:8px;}
.side-related-link{
  display:flex;align-items:center;gap:10px;color:#4d565c;font-size:13.5px;
  background:#f9f8f6;border:1px solid rgba(23,28,31,.06);
  border-radius:8px;padding:9px 11px;transition:all .2s ease;
}
.side-related-link i{color:var(--gold);width:16px;text-align:center;}
.side-related-link:hover{
  border-color:rgba(179,135,74,.3);color:var(--gold);transform:translateX(3px);
}

.support-section{padding:30px 0 54px;}
.inner-support{
  position:relative;border-radius:18px;overflow:hidden;padding:0;background:#0A0E10;
  box-shadow:var(--shadow-hover);
}
.support-bg{
  position:absolute;inset:0;
  background:linear-gradient(103deg, rgba(10,14,16,.94) 0%, rgba(10,14,16,.82) 54%, rgba(23,28,31,.56) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.support-content{
  position:relative;z-index:2;padding:40px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
}
.support-content h2{
  color:#fff;font-size:24px;font-weight:800;margin-bottom:8px;line-height:1.4;
}
.support-content p{color:rgba(255,255,255,.68);font-size:14.5px;margin:0;max-width:620px;}
.support-actions{display:flex;gap:10px;flex-wrap:wrap;}
.btn-support{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:6px;
  font-size:14px;font-weight:600;transition:all .2s;
}
.btn-support-dark{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.08);color:#fff;}
.btn-support-dark:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px);}

.site-footer{
  background:var(--bg);border-top:1px solid rgba(23,28,31,.06);
  padding:58px 0 24px;color:var(--text);
}
.footer-row{
  display:grid;grid-template-columns:1.5fr 1fr 1.1fr;gap:40px;
  padding-bottom:34px;border-bottom:1px solid rgba(23,28,31,.08);
}
.footer-brand-title{
  font-size:18px;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:8px;margin-bottom:12px;
}
.footer-brand-title i{color:var(--gold);}
.footer-desc{font-size:14px;color:var(--text-muted);max-width:390px;margin:0;line-height:1.85;}
.footer-column-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:9px;margin:0;padding:0;}
.footer-links a{font-size:14px;color:#565e65;transition:color .2s;}
.footer-links a:hover{color:var(--gold);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:var(--text-muted);
}
.footer-legacy{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.footer-legacy span+span{position:relative;padding-left:14px;}
.footer-legacy span+span::before{content:"";position:absolute;left:0;top:50%;width:1px;height:12px;background:rgba(23,28,31,.16);transform:translateY(-50%);}

@media (max-width: 1199px){
  .help-hero-content h1{font-size:32px;}
  .help-grid{grid-template-columns:minmax(0,1fr) 300px;gap:24px;}
}

@media (max-width: 991px){
  .header-nav-desktop,.status-badge,.header-download-btn{display:none;}
  .nav-toggle{display:flex;}
  .help-hero-grid{grid-template-columns:1fr;gap:28px;}
  .help-hero-media{max-width:540px;}
  .help-hero-imgwrap img{height:300px;}
  .help-grid{grid-template-columns:1fr;}
  .help-sidebar{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .side-related{grid-column:1/-1;}
  .footer-row{grid-template-columns:1fr 1fr;}
}

@media (max-width: 767px){
  .container{padding-left:18px;padding-right:18px;}
  .topic-card-grid{grid-template-columns:1fr;}
  .help-group{padding:20px 18px;}
  .help-hero-content h1{font-size:28px;}
  .footer-row{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .help-sidebar{grid-template-columns:1fr;}
  .side-related{grid-column:auto;}
  .support-content{padding:32px 24px;}
  .header-brand .brand-sub{display:none;}
  .brand-verify{display:none;}
}

@media (max-width: 520px){
  .brand-text>span:first-child{font-size:15px;}
  .brand-icon{width:33px;height:33px;flex:0 0 33px;font-size:15px;}
  .header-inner{height:64px;gap:10px;}
  .site-header.scrolled .header-inner{height:60px;}
  .help-hero{padding:32px 0;}
  .help-hero-content h1{font-size:25px;}
  .help-hero-lead{font-size:15px;}
  .help-hero-actions .btn{width:100%;}
  .help-accordion .accordion-button{font-size:14px;padding-right:30px;}
  .help-accordion .accordion-body{padding-right:4px;}
  .footer-bottom{font-size:12px;}
  .mobile-menu-panel{padding:10px 18px 18px;}
}

/* roulang page: category3 */
:root {
            --ky-carbon: #171C1F;
            --ky-carbon-2: #0A0E10;
            --ky-gold: #B3874A;
            --ky-gold-light: #D6B370;
            --ky-cream: #F4F3F0;
            --ky-white: #FFFFFF;
            --ky-ink: #252B2F;
            --ky-text: #40474D;
            --ky-muted: #7B858C;
            --ky-border: rgba(23,28,31,0.1);
            --ky-border-soft: rgba(23,28,31,0.06);
            --ky-shadow-sm: 0 6px 18px rgba(15,18,20,0.05);
            --ky-shadow-md: 0 14px 34px rgba(15,18,20,0.08);
            --ky-shadow-lg: 0 26px 60px rgba(15,18,20,0.12);
            --ky-radius-sm: 6px;
            --ky-radius-md: 12px;
            --ky-radius-lg: 16px;
            --ky-radius-pill: 50px;
            --ky-body-font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--ky-body-font);
            font-size: 15.5px;
            line-height: 1.85;
            color: var(--ky-ink);
            background: var(--ky-white);
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--ky-ink);
            line-height: 1.35;
            margin-top: 0;
        }

        p {
            margin-top: 0;
        }

        a {
            color: var(--ky-gold);
            text-decoration: none;
        }

        a:hover {
            color: var(--ky-gold-light);
        }

        img {
            max-width: 100%;
            display: block;
        }

        button {
            font-family: inherit;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(179,135,74,0.45);
            outline-offset: 3px;
            border-radius: var(--ky-radius-sm);
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1288px;
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        .container {
            margin-right: auto;
            margin-left: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        section {
            scroll-margin-top: 100px;
        }

        .btn {
            transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--ky-radius-pill);
            font-weight: 600;
        }

        .btn:hover,
        .btn:focus {
            transform: translateY(-2px);
        }

        .btn:active {
            transform: scale(.98);
        }

        .btn-gold {
            background: linear-gradient(135deg, #C49A5A, #AD7D3F);
            border: 1px solid rgba(23,28,31,0.16);
            color: #1C2124;
            box-shadow: 0 10px 26px rgba(179,135,74,0.26);
        }

        .btn-gold:hover {
            color: #161A1C;
            background: linear-gradient(135deg, #D6B370, #B3874A);
            box-shadow: 0 14px 30px rgba(179,135,74,0.34);
        }

        .btn-outline-ink {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.55);
            color: #FFFFFF;
        }

        .btn-outline-ink:hover {
            color: #FFFFFF;
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.9);
        }

        .btn-outline-dark {
            background: #fff;
            border: 1px solid rgba(23,28,31,0.16);
            color: var(--ky-ink);
        }

        .btn-outline-dark:hover {
            color: var(--ky-ink);
            border-color: rgba(23,28,31,0.4);
            box-shadow: var(--ky-shadow-sm);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: .06em;
            font-size: .82rem;
            color: var(--ky-gold);
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .eyebrow i {
            font-size: .82rem;
            color: var(--ky-gold);
        }

        .section-title {
            font-size: clamp(1.6rem, 2.6vw, 2.4rem);
            font-weight: 800;
            color: var(--ky-ink);
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }

        .section-desc {
            color: var(--ky-text);
            font-size: 1rem;
            max-width: 640px;
        }

        /* ===== Global Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            height: 72px;
            background: rgba(255,255,255,0.88);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(23,28,31,0.06);
            transition: height .25s ease, box-shadow .25s ease, background .25s ease;
        }

        .site-header.scrolled {
            height: 60px;
            background: rgba(255,255,255,0.94);
            box-shadow: 0 8px 30px rgba(23,28,31,0.07);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            height: 100%;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 11px;
            color: var(--ky-ink);
            flex-shrink: 0;
        }

        .header-brand:hover {
            color: var(--ky-ink);
        }

        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 11px;
            background: linear-gradient(145deg, #2B3238, #171C1F);
            color: var(--ky-gold-light);
            box-shadow: 0 8px 18px rgba(23,28,31,0.18);
            font-size: 1.05rem;
        }

        .header-brand .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.25;
            font-weight: 700;
            font-size: 1.08rem;
            color: var(--ky-ink);
            letter-spacing: 0.01em;
        }

        .header-brand .brand-sub {
            font-size: 0.68rem;
            color: var(--ky-muted);
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-top: 2px;
        }

        .header-brand .brand-verify {
            margin-left: 7px;
            font-size: 0.62rem;
            padding: 2px 7px;
            border: 1px solid rgba(179,135,74,0.4);
            color: #8A6D3B;
            border-radius: 30px;
            background: rgba(179,135,74,0.08);
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .header-nav-desktop {
            display: flex;
            align-items: center;
        }

        .header-nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .header-nav-links .nav-item {
            position: relative;
            display: inline-block;
            padding: 8px 10px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #4A5156;
            border-radius: 8px;
            transition: color .2s ease, background .2s ease;
        }

        .header-nav-links .nav-item:hover {
            color: var(--ky-gold);
            background: rgba(179,135,74,0.06);
        }

        .header-nav-links .nav-item.current {
            color: var(--ky-gold);
            font-weight: 700;
        }

        .header-nav-links .nav-item.current::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--ky-gold), var(--ky-gold-light));
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            color: #76633E;
            background: rgba(179,135,74,0.08);
            border: 1px solid rgba(179,135,74,0.2);
            padding: 5px 10px;
            border-radius: 60px;
            white-space: nowrap;
        }

        .status-badge .status-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--ky-gold);
            box-shadow: 0 0 0 3px rgba(179,135,74,0.18);
        }

        .header-download-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 42px;
            padding: 0 20px;
            background: linear-gradient(135deg, #D2A862, #AE7A40);
            color: #191D1F;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: 42px;
            box-shadow: 0 8px 20px rgba(179,135,74,0.24);
            transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
        }

        .header-download-btn:hover {
            color: #161A1B;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(179,135,74,0.3);
            background: linear-gradient(135deg, #DDBA77, #B3874A);
        }

        .nav-toggle {
            display: none;
            position: relative;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid var(--ky-border);
            border-radius: 10px;
            cursor: pointer;
            padding: 0;
        }

        .nav-toggle span {
            position: absolute;
            left: 11px;
            right: 11px;
            height: 2px;
            background: var(--ky-ink);
            border-radius: 2px;
        }

        .nav-toggle span:nth-child(1) {
            top: 14px;
        }

        .nav-toggle span:nth-child(2) {
            top: 20px;
        }

        .nav-toggle span:nth-child(3) {
            top: 26px;
        }

        .mobile-menu {
            background: #fff;
            border-top: 1px solid var(--ky-border-soft);
            box-shadow: 0 20px 30px rgba(23,28,31,0.08);
        }

        .mobile-menu-inner {
            padding-top: 16px;
            padding-bottom: 20px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu-link {
            padding: 11px 14px;
            border-radius: 10px;
            color: var(--ky-ink);
            font-weight: 500;
            background: transparent;
        }

        .mobile-menu-link:hover {
            background: var(--ky-cream);
            color: var(--ky-gold);
        }

        @media (max-width: 991.98px) {
            .header-nav-desktop {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .status-badge {
                display: none;
            }

            .header-brand .brand-sub {
                display: none;
            }
        }

        /* ===== Announcement Hero ===== */
        .announce-hero {
            position: relative;
            overflow: hidden;
            background-color: var(--ky-carbon);
            background-image: linear-gradient(105deg, rgba(8,11,13,0.92) 0%, rgba(23,28,31,0.82) 44%, rgba(23,28,31,0.48) 100%), url("/assets/images/backpic/back-1.webp");
            background-size: cover;
            background-position: center;
            padding: 74px 0 84px;
        }

        .announce-hero::after {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            right: -120px;
            bottom: -300px;
            background: radial-gradient(circle, rgba(230,200,142,0.2), transparent 66%);
            pointer-events: none;
        }

        .announce-hero .container {
            position: relative;
            z-index: 2;
        }

        .crumbs {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255,255,255,0.62);
            font-size: 0.86rem;
            margin-bottom: 46px;
        }

        .crumbs a {
            color: rgba(255,255,255,0.8);
            font-weight: 500;
        }

        .crumbs a:hover {
            color: var(--ky-gold-light);
        }

        .crumbs .fas {
            font-size: 0.66rem;
            color: rgba(255,255,255,0.45);
        }

        .announce-headline {
            max-width: 820px;
        }

        .headline-overline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            letter-spacing: .1em;
            color: var(--ky-gold-light);
            font-weight: 600;
            background: rgba(179,135,74,0.13);
            border: 1px solid rgba(179,135,74,0.26);
            padding: 6px 14px;
            border-radius: 40px;
        }

        .announce-headline h1 {
            font-size: clamp(2.05rem, 4.2vw, 3.5rem);
            line-height: 1.25;
            color: #fff;
            font-weight: 800;
            letter-spacing: 0;
            margin: 22px 0 20px;
            text-shadow: 0 8px 24px rgba(0,0,0,0.22);
        }

        .announce-headline p {
            color: rgba(255,255,255,0.82);
            font-size: 1.04rem;
            max-width: 660px;
            margin-bottom: 26px;
        }

        .announce-hero .hero-note {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 40px;
            color: rgba(255,255,255,0.75);
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.16);
            font-size: 0.88rem;
        }

        .announce-hero .hero-note i {
            color: var(--ky-gold-light);
        }

        /* ===== Status / Current Notice ===== */
        .notice-current-section {
            background: #fff;
            padding: 86px 0 36px;
        }

        .notice-current-card {
            display: grid;
            grid-template-columns: 400px 1fr;
            min-height: 0;
            border: 1px solid var(--ky-border);
            border-radius: 24px;
            overflow: hidden;
            background: #fff;
            box-shadow: var(--ky-shadow-md);
            transition: box-shadow .3s ease;
        }

        .notice-current-card:hover {
            box-shadow: var(--ky-shadow-lg);
        }

        .notice-media {
            position: relative;
            min-height: 360px;
            background: var(--ky-carbon);
            overflow: hidden;
        }

        .notice-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .notice-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 56%, rgba(10,14,16,0.76));
        }

        .notice-media-caption {
            position: absolute;
            left: 22px;
            right: 22px;
            bottom: 20px;
            z-index: 2;
            color: #fff;
        }

        .notice-media-caption strong {
            display: block;
            color: #fff;
            font-size: 1.35rem;
            margin-bottom: 5px;
        }

        .notice-media-caption span {
            color: rgba(255,255,255,0.8);
            font-size: .92rem;
        }

        .notice-current-list {
            padding: 42px 46px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            justify-content: center;
        }

        .notice-current-list .section-title {
            margin-bottom: 0;
        }

        .notice-list-desc {
            color: var(--ky-text);
            margin-bottom: 0;
        }

        .mini-status {
            display: grid;
            grid-template-columns: 48px 1fr;
            gap: 14px;
            padding: 18px 18px;
            border: 1px solid var(--ky-border);
            border-radius: 14px;
            background: #fbfaf7;
            transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        .mini-status:hover {
            transform: translateY(-2px);
            border-color: rgba(179,135,74,0.28);
            box-shadow: var(--ky-shadow-sm);
        }

        .mini-status-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(179,135,74,0.1);
            color: var(--ky-gold);
            font-size: 1.05rem;
            border: 1px solid rgba(179,135,74,0.1);
        }

        .mini-status h3 {
            font-size: 1.02rem;
            font-weight: 700;
            margin: 0 0 5px;
        }

        .mini-status p {
            margin: 0;
            font-size: .9rem;
            line-height: 1.7;
            color: var(--ky-text);
        }

        .mini-status p a {
            font-weight: 600;
            font-size: .9rem;
        }

        @media (max-width: 991.98px) {
            .notice-current-card {
                grid-template-columns: 1fr;
            }

            .notice-media {
                min-height: 240px;
            }
        }

        @media (max-width: 480px) {
            .notice-current-list {
                padding: 26px 20px;
            }

            .mini-status {
                grid-template-columns: 40px 1fr;
                padding: 16px 14px;
            }

            .mini-status-icon {
                width: 36px;
                height: 36px;
                font-size: .9rem;
            }
        }

        /* ===== Timeline / Announcement List ===== */
        .timeline-section {
            background: var(--ky-cream);
            padding: 92px 0 86px;
        }

        .filter-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }

        .filter-btn {
            border: 1px solid var(--ky-border);
            background: #fff;
            color: var(--ky-text);
            font-size: .86rem;
            font-weight: 500;
            padding: 7px 17px;
            border-radius: 50px;
            cursor: pointer;
            transition: all .2s ease;
        }

        .filter-btn:hover {
            border-color: rgba(179,135,74,0.45);
            color: var(--ky-gold);
        }

        .filter-btn.active {
            background: linear-gradient(135deg, #C49A5A, #AD7D3F);
            color: #1C2124;
            border-color: transparent;
            font-weight: 600;
        }

        .timeline-list {
            position: relative;
            max-width: 1080px;
            margin: 0 auto;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 28px;
        }

        @media (min-width: 768px) {
            .timeline-list::before {
                content: "";
                position: absolute;
                left: 220px;
                top: 12px;
                bottom: 12px;
                width: 2px;
                border-radius: 4px;
                background: linear-gradient(180deg, rgba(179,135,74,0.75), rgba(179,135,74,0.08));
            }

            .timeline-item {
                display: grid;
                grid-template-columns: 218px 1fr;
                gap: 64px;
            }

            .timeline-item::before {
                content: "";
                position: absolute;
                left: 212px;
                top: 30px;
                width: 18px;
                height: 18px;
                background: #fff;
                border: 4px solid var(--ky-gold);
                border-radius: 50%;
                box-shadow: 0 0 0 6px rgba(179,135,74,0.16);
                z-index: 2;
            }
        }

        .timeline-side {
            display: flex;
            justify-content: flex-end;
            padding-top: 18px;
        }

        .timeline-side time {
            display: inline-flex;
            flex-direction: column;
            align-items: flex-end;
            font-weight: 700;
            color: var(--ky-carbon);
            background: #fff;
            border: 1px solid var(--ky-border);
            border-radius: 12px;
            padding: 8px 12px;
            box-shadow: var(--ky-shadow-sm);
            font-size: .82rem;
            line-height: 1.5;
            font-variant-numeric: tabular-nums;
        }

        .timeline-side time strong {
            color: var(--ky-gold);
            font-size: 1.05rem;
        }

        .timeline-card {
            background: #fff;
            border: 1px solid rgba(23,28,31,0.07);
            border-left: 4px solid var(--ky-gold);
            border-radius: 16px;
            padding: 26px 30px;
            box-shadow: var(--ky-shadow-sm);
            transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
        }

        .timeline-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--ky-shadow-lg);
            border-color: rgba(179,135,74,0.22);
            border-left-color: var(--ky-gold-light);
        }

        .timeline-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            background: rgba(179,135,74,0.12);
            color: #826537;
            font-size: .76rem;
            font-weight: 600;
            border-radius: 30px;
        }

        .tag-gray {
            background: rgba(23,28,31,0.06);
            color: var(--ky-text);
        }

        .tag-green {
            background: rgba(76,150,120,0.11);
            color: #377459;
        }

        .timeline-card h3 {
            font-size: 1.18rem;
            margin-bottom: 8px;
        }

        .timeline-card p {
            color: var(--ky-text);
            font-size: .95rem;
            margin-bottom: 14px;
        }

        .timeline-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 12px;
            border-top: 1px dashed var(--ky-border);
        }

        .timeline-foot span {
            color: var(--ky-muted);
            font-size: .8rem;
        }

        .timeline-foot i {
            color: var(--ky-gold);
            font-size: .86rem;
        }

        @media (max-width: 767.98px) {
            .timeline-list::before {
                content: "";
                position: absolute;
                left: 7px;
                top: 12px;
                bottom: 12px;
                width: 2px;
                background: rgba(179,135,74,0.3);
            }

            .timeline-item {
                display: grid;
                grid-template-columns: 1fr;
                gap: 0;
                padding-left: 26px;
            }

            .timeline-item::before {
                content: "";
                position: absolute;
                left: -1px;
                top: 28px;
                width: 16px;
                height: 16px;
                background: var(--ky-gold);
                border: 3px solid #fff;
                border-radius: 50%;
                box-shadow: 0 0 0 4px rgba(179,135,74,0.16);
            }

            .timeline-side {
                justify-content: flex-start;
                padding-top: 0;
                padding-left: 4px;
            }

            .timeline-side time {
                align-items: flex-start;
                border: 0;
                background: transparent;
                box-shadow: none;
                padding: 0;
                font-size: .76rem;
            }

            .timeline-card {
                margin-top: 12px;
            }
        }

        @media (max-width: 520px) {
            .timeline-card {
                padding: 20px;
            }

            .filter-wrap {
                gap: 6px;
            }

            .filter-btn {
                padding: 6px 12px;
                font-size: .8rem;
            }
        }

        /* ===== How to handle ===== */
        .steps-section {
            background: #fff;
            padding: 92px 0 80px;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 34px;
        }

        .step-card {
            background: #fbfaf7;
            border: 1px solid var(--ky-border);
            border-radius: 18px;
            padding: 34px 28px;
            position: relative;
            transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--ky-shadow-md);
            border-color: rgba(179,135,74,0.3);
        }

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: linear-gradient(145deg, #322823, #1D2022);
            color: var(--ky-gold-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            margin-bottom: 24px;
            box-shadow: 0 8px 18px rgba(23,28,31,0.12);
        }

        .step-card h3 {
            font-size: 1.12rem;
            margin-bottom: 10px;
        }

        .step-card p {
            color: var(--ky-text);
            font-size: .92rem;
            margin-bottom: 0;
        }

        @media (max-width: 767.98px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--ky-cream);
            padding: 92px 0 96px;
        }

        .faq-panel {
            display: grid;
            grid-template-columns: 380px 1fr;
            gap: 48px;
            align-items: start;
        }

        .faq-intro-card {
            background: #fff;
            border: 1px solid var(--ky-border);
            border-radius: 20px;
            box-shadow: var(--ky-shadow-sm);
            padding: 34px 30px;
        }

        .faq-intro-card .icon-stack {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(179,135,74,0.11);
            color: var(--ky-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 22px;
        }

        .faq-intro-card h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }

        .faq-intro-card p {
            color: var(--ky-text);
            font-size: .95rem;
        }

        .accordion-custom {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--ky-border);
            border-radius: 16px !important;
            overflow: hidden;
            box-shadow: 0 4px 14px rgba(23,28,31,0.03);
            transition: box-shadow .2s ease, border-color .2s ease;
        }

        .faq-item:hover {
            border-color: rgba(179,135,74,0.24);
            box-shadow: var(--ky-shadow-sm);
        }

        .faq-item .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ky-ink);
            background: #fff;
            padding: 19px 22px;
            border: 0;
            box-shadow: none;
        }

        .faq-item .accordion-button:not(.collapsed) {
            color: var(--ky-gold);
            background: #fff;
            box-shadow: none;
        }

        .faq-item .accordion-button::after {
            background-size: 1rem auto;
            opacity: .5;
            transition: transform .25s ease, opacity .2s ease;
        }

        .faq-item .accordion-button:not(.collapsed)::after {
            filter: invert(61%) sepia(40%) saturate(400%) hue-rotate(0deg);
            opacity: .8;
            transform: rotate(-180deg);
        }

        .faq-item .accordion-body {
            padding: 0 22px 20px;
            color: var(--ky-text);
            font-size: .93rem;
            line-height: 1.85;
        }

        @media (max-width: 991.98px) {
            .faq-panel {
                grid-template-columns: 1fr;
            }
        }

        /* ===== CTA Band ===== */
        .cta-band {
            position: relative;
            background: linear-gradient(100deg, rgba(18,22,25,0.93), rgba(23,28,31,0.88)), url("/assets/images/backpic/back-2.webp") center/cover;
            padding: 82px 0 80px;
            overflow: hidden;
            color: #fff;
        }

        .cta-band .container {
            position: relative;
            z-index: 2;
        }

        .cta-inner {
            max-width: 760px;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.7rem, 3.2vw, 2.6rem);
            line-height: 1.4;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .cta-actions .btn {
            height: 50px;
            padding: 0 28px;
            font-size: .94rem;
        }

        .cta-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 24px;
            color: rgba(255,255,255,0.62);
            font-size: .84rem;
        }

        .cta-meta i {
            color: var(--ky-gold-light);
        }

        @media (max-width: 520px) {
            .cta-actions .btn {
                width: 100%;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--ky-carbon-2);
            color: rgba(255,255,255,0.7);
            padding: 76px 0 26px;
            font-size: .9rem;
        }

        .footer-row {
            display: grid;
            grid-template-columns: 1.6fr 0.9fr 1fr;
            gap: 56px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .footer-brand-title {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-size: 1.22rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-brand-title i {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: rgba(179,135,74,0.15);
            color: var(--ky-gold-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .9rem;
        }

        .footer-desc {
            font-size: .92rem;
            line-height: 1.9;
            max-width: 380px;
            margin-bottom: 0;
        }

        .footer-column-title {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 14px;
            letter-spacing: .02em;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 9px;
        }

        .footer-links a {
            color: rgba(255,255,255,0.66);
            font-size: .9rem;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-links a:hover {
            color: var(--ky-gold-light);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 24px;
            color: rgba(255,255,255,0.48);
            font-size: .8rem;
        }

        .footer-legacy {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 991.98px) {
            .footer-row {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 640px) {
            .site-footer {
                padding-top: 50px;
            }

            .footer-row {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 26px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* print */
        @media print {
            .site-header,
            .cta-band,
            .site-footer {
                display: none !important;
            }

            body {
                background: #fff;
            }
        }